Please enter a valid full or partial manufacturer part number with a minimum of 3 letters or numbers

    TNY254 Search Results

    SF Impression Pixel

    TNY254 Price and Stock

    Power Integrations TNY254PN

    IC OFFLINE SWITCH FLYBACK 8DIP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey TNY254PN Tube 9,555 1
    • 1 $1.2
    • 10 $1.2
    • 100 $1.08
    • 1000 $1.2
    • 10000 $0.75
    		Buy Now
    Mouser Electronics TNY254PN 633
    • 1 $1.27
    • 10 $1.27
    • 100 $1.14
    • 1000 $0.954
    • 10000 $0.954
    		Buy Now
    Newark TNY254PN Bulk 1
    • 1 $1.25
    • 10 $1.15
    • 100 $1.05
    • 1000 $0.921
    • 10000 $0.78
    		Buy Now
    Bristol Electronics TNY254PN 100 3
    • 1 -
    • 10 $1.8
    • 100 $1.125
    • 1000 $1.125
    • 10000 $1.125
    		Buy Now
    Quest Components TNY254PN 80
    • 1 $2.4
    • 10 $2.4
    • 100 $0.9
    • 1000 $0.9
    • 10000 $0.9
    		Buy Now
    TME TNY254PN 364 1
    • 1 $2.02
    • 10 $1.6
    • 100 $1.49
    • 1000 $1.49
    • 10000 $1.49
    		Buy Now
    EBV Elektronik TNY254PN 300 10 Weeks 50
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now
    New Advantage Corporation TNY254PN 250 1
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.27
    • 10000 $1.27
    		Buy Now

    Power Integrations TNY254GN-TL

    IC OFFLINE SWITCH FLYBACK 8SMD
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey TNY254GN-TL Digi-Reel 7,295 1
    • 1 $1.39
    • 10 $1.39
    • 100 $1.1515
    • 1000 $1.1515
    • 10000 $1.1515
    		Buy Now
    TNY254GN-TL Cut Tape 7,295 1
    • 1 $1.39
    • 10 $1.39
    • 100 $1.1515
    • 1000 $1.1515
    • 10000 $1.1515
    		Buy Now
    TNY254GN-TL Reel 7,000 1,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.98
    • 10000 $0.8125
    		Buy Now
    Mouser Electronics TNY254GN-TL 31
    • 1 $1.39
    • 10 $1.39
    • 100 $1.16
    • 1000 $0.98
    • 10000 $0.812
    		Buy Now
    Newark TNY254GN-TL Cut Tape 1
    • 1 $1.61
    • 10 $1.55
    • 100 $1.36
    • 1000 $1.36
    • 10000 $1.36
    		Buy Now
    Bristol Electronics TNY254GN-TL 24 3
    • 1 -
    • 10 $1.95
    • 100 $1.4625
    • 1000 $1.4625
    • 10000 $1.4625
    		Buy Now
    Quest Components TNY254GN-TL 19
    • 1 $2.6
    • 10 $1.95
    • 100 $1.625
    • 1000 $1.625
    • 10000 $1.625
    		Buy Now
    TNY254GN-TL 19
    • 1 $2.6
    • 10 $1.95
    • 100 $1.625
    • 1000 $1.625
    • 10000 $1.625
    		Buy Now
    TME TNY254GN-TL 983 1
    • 1 $1.64
    • 10 $1.47
    • 100 $1.3
    • 1000 $1.09
    • 10000 $1.01
    		Buy Now
    ComSIT USA TNY254GN-TL 3,243
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Get Quote
    Chip Stock TNY254GN-TL 370
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Get Quote
    EBV Elektronik TNY254GN-TL 4,000 10 Weeks 1,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now
    New Advantage Corporation TNY254GN-TL 3,000 1
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.49
    • 10000 $1.38
    		Buy Now

    Power Integrations TNY254P

    IC OFFLINE SWITCH FLYBACK 8DIP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey TNY254P Tube
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now
    Bristol Electronics TNY254P 28
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Get Quote

    Power Integrations TNY254G

    IC OFFLINE SWITCH FLYBACK 8SMD
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey TNY254G Tube
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now

    Power Integrations TNY254GN

    IC OFFLINE SWITCH FLYBACK 8SMD
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey TNY254GN Tube
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now
    Bristol Electronics TNY254GN 50
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Get Quote
    ComSIT USA TNY254GN 1,014
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Get Quote
    Find more TNY254 price and stock on Findchips.com

    TNY254 Datasheets (12)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    TNY254 Power Integrations TinySwitch Family Energy Efficient, Low Power Off-line Switchers Original PDF
    TNY254 Power Integrations TinySwitch-II Family - Enhanced, Energy Efficient, Low Power Off-line Switcher Original PDF
    TNY254 Power Integrations Tiny Switch 3 W AC Adapter:<10 mW No-load Consumption Original PDF
    TNY254G Power Integrations TinySwitch Family Energy Efficient, Low Power Off-line Switchers Original PDF
    TNY254G Power Integrations PMIC - AC DC Converters, Offline Switchers, Integrated Circuits (ICs), IC OFFLINE SWIT OTP OCP HV 8SMD Original PDF
    TNY254GN Power Integrations PMIC - AC DC Converters, Offline Switchers, Integrated Circuits (ICs), IC OFFLINE SWIT OTP OCP HV 8SMD Original PDF
    TNY254GN-TL Power Integrations PMIC - AC DC Converters, Offline Switchers, Integrated Circuits (ICs), IC OFFLINE SWIT OTP OCP HV 8SMD Original PDF
    TNY254G-TL Power Integrations Power management, Energy Efficient, Low Power Off-line Switchers Original PDF
    TNY254G-TL Power Integrations PMIC - AC DC Converters, Offline Switchers, Integrated Circuits (ICs), IC OFFLINE SWIT OTP OCP HV 8SMD Original PDF
    TNY254P Power Integrations TinySwitch Family Energy Efficient, Low Power Off-line Switchers Original PDF
    TNY254P Power Integrations PMIC - AC DC Converters, Offline Switchers, Integrated Circuits (ICs), IC OFFLINE SWIT OTP OCP HV 8DIP Original PDF
    TNY254PN Power Integrations PMIC - AC DC Converters, Offline Switchers, Integrated Circuits (ICs), IC OFFLINE SWIT OTP OCP HV 8DIP Original PDF

    TNY254 Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    TNY254

    Abstract: P5009 P5008 TNY255 p533 P5000 P5001 P5004 P5005 TNY253
    Text: POWER TRANSFORMERS For TinySwitch TNY253, TNY254 and TNY255 Designed for use with Power Integration TNY253, TNY254 and TNY255 in low cost AC to DC converters for a large range of applications 4000 Vrms isolation Materials meet UL 94V-0 and IEC 950 No audible noise


    Original     		PDF TNY253, TNY254 TNY255 P5000 P5001 P5004 P5005 P5009 P5008 TNY255 p533 P5000 P5001 P5004 P5005 TNY253

    TNY254P

    Abstract: EE16 NC-2H TNY254P equivalent RC VOLTAGE CLAMP snubber circuit NC-2H DI-27 TNY254 equivalent clamp current transformer TNY254 flyback switching snubber design
    Text: Design Idea DI-27 ® TinySwitch 3 W AC Adapter: <10 mW No-load Consumption Application Device Power Output Input Voltage Output Voltage Topology Adapter TNY254 3W 85-265 VAC 12 V Flyback Design Highlights consume <100 mW at no-load. However, by providing


    Original     		PDF DI-27 TNY254 TNY254P EE16 NC-2H TNY254P equivalent RC VOLTAGE CLAMP snubber circuit NC-2H DI-27 TNY254 equivalent clamp current transformer TNY254 flyback switching snubber design

    P5001NL

    Abstract: No abstract text available
    Text: POWER TRANSFORMERS For TinySwitch TNY253, TNY254 and TNY255 Designed for use with Power Integration TNY253, TNY254 and TNY255 in low cost AC to DC converters for a large range of applications 4000 Vrms isolation Materials meet UL 94V-0 and IEC 950 No audible noise


    Original     		PDF TNY253, TNY254 TNY255 P5000NL P5001NL P5004NL P5005NL P5001NL

    TNY254P

    Abstract: non-isolated buck converter design TNY254 nonisolated flyback converter SFH615-2 CHARACTERISTICS DIODE 1N4007 TinySwitch DI-42 INTEGRATIONS 1N5342B DI-42
    Text: Design Idea DI-42 ® TinySwitch Non-isolated Flyback Buck/Boost Converter Application Device Power Output Input Voltage Output Voltage Topology Appliances TNY254P 1.2 W 85-265 VAC 12 V Buck/Boost there is no analog control loop to compensate. The low


    Original     		PDF DI-42 TNY254P EN61000-4-5 TNY254P non-isolated buck converter design TNY254 nonisolated flyback converter SFH615-2 CHARACTERISTICS DIODE 1N4007 TinySwitch DI-42 INTEGRATIONS 1N5342B DI-42

    PC40EE13-Z

    Abstract: TNY254P PC40EE13 TNY254 tinyswitch EE13 tdk BEAD10 LTV817 11DQ06 1N4005
    Text: Design Idea DI-5 TinySwitch 1.5 W AC Adapter POWER INTEGRATIONS, INC. Application Device Power Output Input Voltage Output Voltage AC Adapter TNY254 1.5 W 85 - 265 VAC 9 V ± 5% Design Highlights R4 and C3 damp the primary leakage spike at the TinySwitch


    Original     		PDF TNY254 PC40EE13-Z TNY254P PC40EE13 TNY254 tinyswitch EE13 tdk BEAD10 LTV817 11DQ06 1N4005

    TNY253

    Abstract: TNY254 TNY255 P5009
    Text: POWER TRANSFORMERS For TinySwitch TNY253, TNY254 and TNY255 ! W E N Designed for use with Power Integration TNY253, TNY254 and TNY255 in low cost AC to DC converters for a large range of applications 4000 Vrms isolation Materials meet UL 94V-0 and IEC 950


    Original     		PDF TNY253, TNY254 TNY255 TNY255 P5000 P5001 P5004 P5005 TNY253 P5009

    TNY254 equivalent

    Abstract: TNY254 TNY254 pn NEC varistor 022 Siemens sfh615 optocoupler TM501 TNY254P harris mov 120 vac TNY254 internal varistor 222
    Text: Engineering Prototype Report EPR-000008 Title 1.2 W, Universal Input, Non-isolated, TNY254 (EP8) Customer Home Appliance Market Author S.L. Document Number EPR-000008 Date 08-May-2001 Revision 10 Abstract This document presents the specification, schematic & BOM, inductor calculation, test


    Original     		PDF EPR-000008) TNY254 EPR-000008 08-May-2001 23-April-2001 TNY254 equivalent TNY254 TNY254 pn NEC varistor 022 Siemens sfh615 optocoupler TM501 TNY254P harris mov 120 vac TNY254 internal varistor 222

    12vdc to 120vac inverter schematic diagram

    Abstract: 220VAC to 12VDC 2A circuit diagram schematic diagram 230VAC to 12VDC TNY254P 230vac 12vdc transformer 12vdc to 120vac inverter 220VAC to 12VDC transformer 12vdc to 220vac ups schematic diagram 12vdc to 120vac inverter schematic schematic diagram 230VAC to 12VDC POWER SUPPLY
    Text: Title Engineering Prototype Report EPR-00015 3W, Universal Input, Single Output, Isolated Converter with TNY254 (EP-15) Recipients Application Battery Charger Author S. L. Date 11-November -2000 Abstract This document presents the specification, schematic & BOM, transformer calculation, test data, wave forms


    Original     		PDF EPR-00015) TNY254 EP-15) 11-November EPR-00015 12vdc to 120vac inverter schematic diagram 220VAC to 12VDC 2A circuit diagram schematic diagram 230VAC to 12VDC TNY254P 230vac 12vdc transformer 12vdc to 120vac inverter 220VAC to 12VDC transformer 12vdc to 220vac ups schematic diagram 12vdc to 120vac inverter schematic schematic diagram 230VAC to 12VDC POWER SUPPLY

    TNY254

    Abstract: 265VAC TNY255 P5009
    Text: POWER TRANSFORMERS For TinySwitch TNY253, TNY254 and TNY255 Designed for use with Power Integration TNY253, TNY254 and TNY255 in low cost AC to DC converters for a large range of applications 4000 Vrms isolation Materials meet UL 94V-0 and IEC 950 No audible noise


    Original     		PDF TNY253, TNY254 TNY255 TNY255 P5000 P5001 P5004 P5005 265VAC P5009

    tny254pn

    Abstract: EE16 Nippon Ceramic NC-2H for clamp current transformer EE16 transformer EE16 NC-2H EE16 200-240AC RC VOLTAGE CLAMP snubber circuit B6V2 TNY254P
    Text: DI-27 Design Idea TinySwitch 3 W AC Adapter: <10 mW No-load Consumption Application Device Power Output Input Voltage Output Voltage Topology Adapter TNY254PN 3W 85 – 265 VAC 12 V Flyback Design Highlights • Extremely low no-load power consumption <10 mW at


    Original     		PDF DI-27 TNY254PN DI-27 tny254pn EE16 Nippon Ceramic NC-2H for clamp current transformer EE16 transformer EE16 NC-2H EE16 200-240AC RC VOLTAGE CLAMP snubber circuit B6V2 TNY254P

    PC40EE13-Z

    Abstract: TNY254P TNY254 PC40EE13 EE13 tdk ee13 bobbin RC VOLTAGE CLAMP snubber circuit EE13 11DQ06 1N4005
    Text: Design Idea DI-5 TM TinySwitch 1.5 W AC Adapter POWER INTEGRATIONS, INC. Application Device Power Output Input Voltage Output Voltage AC Adapter TNY254 1.5 W 85 - 265 VAC 9 V ± 5% Design Highlights R4 and C3 damp the primary leakage spike at the TinySwitch


    Original     		PDF TNY254 PC40EE13-Z TNY254P TNY254 PC40EE13 EE13 tdk ee13 bobbin RC VOLTAGE CLAMP snubber circuit EE13 11DQ06 1N4005

    PC40EE16-Z

    Abstract: TNY254P TNY254 equivalent TNY254 EE16 core transformer 1N4005 1N4937 1N5230B 2N3904 FR201
    Text: Design Idea DI-8 TM TinySwitch Cellular Phone Adapter POWER INTEGRATIONS, INC. Application Device Power Output Input Voltage Output Voltage Cellular Phone TNY254 3.6 W 85 - 265 VAC 5.2 V ± 6% Design Highlights Topology Flyback These components also provide the necessary filtering to


    Original     		PDF TNY254 PC40EE16-Z TNY254P TNY254 equivalent TNY254 EE16 core transformer 1N4005 1N4937 1N5230B 2N3904 FR201

    TNY254PN

    Abstract: Optocoupler with triac circuits StackFET topswitch StackFET diode u2 TNY254P TinySwitch DI-42 nonisolated flyback converter SFH615-2 Optocoupler with triac
    Text: DI-42 Design Idea TinySwitch Non-isolated Flyback Buck/Boost Converter Application Device Power Output Input Voltage Output Voltage Topology Appliances TNY254PN 1.2 W 85 – 265 VAC 12 V Buck/Boost Design Highlights • Lowest cost non-isolated flyback converter


    Original     		PDF DI-42 TNY254PN EN61000-4-5 DI-42 TNY254PN Optocoupler with triac circuits StackFET topswitch StackFET diode u2 TNY254P TinySwitch DI-42 nonisolated flyback converter SFH615-2 Optocoupler with triac

    P5001NL

    Abstract: P5009NL TNY254 TNY255 P5005 P5000NL P5005NL P5008NL TNY253 TNY254 equivalent
    Text: POWER TRANSFORMERS For TinySwitch TNY253, TNY254 and TNY255 Designed for use with Power Integration TNY253, TNY254 and TNY255 in low cost AC to DC converters for a large range of applications 4000 Vrms isolation Materials meet UL 94V-0 and IEC 950 No audible noise


    Original     		PDF TNY253, TNY254 TNY255 P5000NL P5001NL P5004NL P5005NL P5001NL P5009NL TNY255 P5005 P5000NL P5005NL P5008NL TNY253 TNY254 equivalent

    AN-16 topswitch

    Abstract: EE16 core transformer for TNY253 flyback switching snubber design TNY254 pn universal flyback transformer specification zener snubber PIV RATING 25 V DIODE WITH 2a OUTPUT CURRENT MUR420 diode RC VOLTAGE CLAMP snubber circuit
    Text: TinySwitch Flyback Design Methodology Introduction Figure 1. shows the basic circuit configuration in a typical TinySwitch flyback design using TNY253. This document describes a simple Design Methodology for flyback power supply design using the TinySwitch family of integrated off-line


    Original     		PDF TNY253. TL431 AN-16 topswitch EE16 core transformer for TNY253 flyback switching snubber design TNY254 pn universal flyback transformer specification zener snubber PIV RATING 25 V DIODE WITH 2a OUTPUT CURRENT MUR420 diode RC VOLTAGE CLAMP snubber circuit

    tny 245

    Abstract: TNY268 APPLICATION NOTE TNY268 tny267 circuits tny 264 tny266 Transformer Construction Parameters TNY254 tny267 Transformer Construction Parameters tny267p TNY-254
    Text: TNY264/266-268 ® TinySwitch-II Family Enhanced, Energy Efficient, Low Power Off-line Switcher Product Highlights TinySwitch-II Features Reduce System Cost • Fully integrated auto-restart for short circuit and open loop fault protection–saves external component costs


    Original     		PDF TNY264/266-268 tny 245 TNY268 APPLICATION NOTE TNY268 tny267 circuits tny 264 tny266 Transformer Construction Parameters TNY254 tny267 Transformer Construction Parameters tny267p TNY-254

    TNY268 APPLICATION NOTE

    Abstract: tny267 Transformer SMD-8B TNY263 input 110 vdc TNY267 application circuit 12G KEIHIN tny 286 flyback transformer tny 264 g tl TNY263-268 TNY 260
    Text: TNY263-268 TinySwitch-II Family Enhanced, Energy Efficient, Low Power Off-line Switcher Product Highlights TinySwitch-II Features Reduce System Cost • Fully integrated auto-restart for short circuit and open loop fault protection – saves external component costs


    Original     		PDF TNY263-268 TNY268 APPLICATION NOTE tny267 Transformer SMD-8B TNY263 input 110 vdc TNY267 application circuit 12G KEIHIN tny 286 flyback transformer tny 264 g tl TNY263-268 TNY 260

    p531

    Abstract: p549 P544 P1173.223T p547 P8202 PE-51718 P532 P1172.103T P543
    Text: POWER PRODUCTS Pulse offers a wide variety of Power transformers and inductors for use in switching power supplies and DC/DC converter applications. Components range from low cost simple inductors to current sense and common mode inductors, shielded drum core inductors, gate drive transformer solutions


    Original     		PDF DT1608C-XXX) P0430T PC502 p531 p549 P544 P1173.223T p547 P8202 PE-51718 P532 P1172.103T P543

    LNK305GN

    Abstract: LNK624PG LNK364PN TOP201YN TOP256PN LNK457DG TFS758HG TOP256YN lnk305pn top249yn
    Text: Title Moisture Sensitivity Level MSL Packaging Information Author Reliability Department Date May 15, 2014 Revision 2.2 PATENT INFORMATION The products and applications illustrated herein (including transformer construction and circuits external to the products) may be covered


    Original     		PDF

    TNY254

    Abstract: TNY255 EE16 transformer 74094 TNY253 myrra myrra 74094 EE16 EE16 4 3 CEI950
    Text: TINYSWITCH TRANSFORMERS EE16 1.5 to 5 W • Ambient Temperature ≤ 50°C • Primary Reflected Voltage = 90 to 120V • Dielectric Strength ≥ 3750Vac • Creepage Distances ≥ 6mm • Construction conforms to CEI950, CEI335, CEI61558 for reinforced insulation


    Original     		PDF 3750Vac CEI950, CEI335, CEI61558 TNY253 TNY254 TNY254 TNY255 EE16 transformer 74094 TNY253 myrra myrra 74094 EE16 EE16 4 3 CEI950

    schematic diagram atx Power supply 500w

    Abstract: pioneer PAL 012A 1000w inverter PURE SINE WAVE schematic diagram 600va numeric ups circuit diagrams winbond bios 25064 TLE 9180 infineon smsc MEC 1300 nu TBE schematic diagram inverter 2000w DK55 circuit diagram of luminous 600va UPS
    Text: QUICK INDEX NEW IN THIS ISSUE! Detailed Index - See Pages 3-24 Digital Signal Processors, iCoupler , iMEMS® and iSensor . . . . . 805, 2707, 2768-2769 Connectors, Cable Assemblies, IC Sockets . . . . . . . . . . . 28-568 RF Connectors . . . . . . . . . . . . . . . . . . . . . . Pages 454-455


    Original     		PDF P462-ND P463-ND LNG295LFCP2U LNG395MFTP5U US2011) schematic diagram atx Power supply 500w pioneer PAL 012A 1000w inverter PURE SINE WAVE schematic diagram 600va numeric ups circuit diagrams winbond bios 25064 TLE 9180 infineon smsc MEC 1300 nu TBE schematic diagram inverter 2000w DK55 circuit diagram of luminous 600va UPS

    TRANSISTOR D412 smd

    Abstract: mosfet D414 d409 mosfet mosfet d413 TRANSISTOR D405 mosfet d408 D409 transistor D408 mosfet D404 mosfet D405 mosfet
    Text: Freescale Semiconductor, Inc. 3-Phase Switched Reluctance High-Voltage Power Stage User’s Manual For More Information On This Product, Go to: www.freescale.com A G R E E M E N T Motorola Embedded Motion Control N O N - D I S C L O S U R E Freescale Semiconductor, Inc.


    Original     		PDF

    Motorola

    Abstract: tny 178 tny 223 ic tny 176 tny 266 data TNY267 tny 175 pny 264 1N5227B tny 66
    Text: OFF-LINE SWITCH MODE TINY SWITCH TRANSFORMERS Indicated Parts are UL1950, IEC950, CSA-950 Recognized Under UL File# E162344 * Designed for Use with Power Integrations IC's, Tiny Switch Family * Output Voltage Range from 3.5 to 27 Vdc * 3000 Vrm Isolation Hi-Pot . Meets UL1950, IEC950 Safety Standard


    Original     		PDF UL1950, IEC950, CSA-950 E162344 IEC950 265Vac, PNY-05015 TNY-255 Motorola tny 178 tny 223 ic tny 176 tny 266 data TNY267 tny 175 pny 264 1N5227B tny 66

    EE16 transformer tny255

    Abstract: 1N5294B TNY255P tny2* 7 pin ac adapter circuit transformer tm 1343 TM 1343 transformer 4 pin SMD step up transformer TNY254G equivalent EE16 core transformer
    Text: TNY253/254/255 TM TinySwitch Family Energy Efficient, Low Power Off-line Switchers Product Highlights Lowest Cost, Low Power Switcher Solution • Lower cost than RCC, discrete PWM and other integrated/hybrid solutions • Cost effective replacement for bulky linear adapters


    Original     		PDF TNY253/254/255 EE16 transformer tny255 1N5294B TNY255P tny2* 7 pin ac adapter circuit transformer tm 1343 TM 1343 transformer 4 pin SMD step up transformer TNY254G equivalent EE16 core transformer