SMPS TRANSFORMER SMPS Transformers 103

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Part	Manufacturer	Transformer Type	Mounting Feature	Manufacturer Series	Approvals (V)	Terminal Finish	Power Rating	No. of Functions	No. of Winding (Primary)	Isolation Voltage	Inductance (Primary)	Packing Method	Output Current-1	Maximum DC Unbalance Current	No. of Winding (Secondary)	Sub-Category	Dimensions	Maximum Operating Temperature	Application	Output Voltage-2	Output Voltage-1	Minimum Operating Temperature	Height	Width	Nominal Input Voltage (V)	Load Resistance	Additional Features	Minimum Input Voltage (V)	JESD-609 Code	Minimum Operating Frequency	Length	Turns Ratio (Np:Ns)	Maximum Operating Frequency	Maximum Input Voltage (V)
749196311	Wurth Elektronik	SMPS TRANSFORMER	SURFACE MOUNT						3		23.3 uH	TR, EMBOSSED PLASTIC, 13 INCH			3	Other Transformers	L22.1XB17.5XH8.3 (mm)	125 Cel				-40 Cel	8.3 mm	16 mm			HEIGHT DIM INCLUDE TERMINAL ALSO				17.5 mm
749196530	Wurth Elektronik	SMPS TRANSFORMER	SURFACE MOUNT			TIN SILVER COPPER			3		4.3 uH	TR, EMBOSSED PLASTIC, 13 INCH			3	Other Transformers	L29.5XB21.0XH10.8 (mm)	125 Cel				-40 Cel	10.8 mm	21 mm			HEIGHT DIM INCLUDE TERMINAL ALSO		e1		21 mm
7491181112	Wurth Elektronik	SMPS TRANSFORMER	THROUGH HOLE MOUNTED			TIN OVER NICKEL		1	1	4000 V	2800 uH	TRAY	.25 A		1	Other Transformers	L21.5XB15.0XH12.0 (mm)	125 Cel	GENERAL PURPOSE		12 V	-40 Cel	12 mm	15 mm		.29 ohm	LENGTH DIMENSION INCLUDES TERMINAL ALSO	85	e3		21.5 mm	8.1:1		265
750310617	Wurth Elektronik	SMPS TRANSFORMER	SURFACE MOUNT						1		4.5 uH	TR, EMBOSSED PLASTIC, 13 INCH			1		L29.08XB23.11XH11.43 (mm)	125 Cel			12 V	-40 Cel	11.43 mm	23.11 mm			LENGTH & HEIGHT DIM INCLUDE TERMINAL ALSO	9			29.08 mm			36
750311599	Wurth Elektronik	SMPS TRANSFORMER	SURFACE MOUNT						2		8 uH	TR			2	Other Transformers	L29.08XB23.11XH11.43 (mm)	125 Cel			15 V	-40 Cel	11.43 mm	23.11 mm				20			29.64 mm			48
750311600	Wurth Elektronik	SMPS TRANSFORMER	SURFACE MOUNT						2		12 uH	TR			2	Other Transformers	L29.08XB23.11XH11.43 (mm)	125 Cel			15 V	-40 Cel	11.43 mm	23.11 mm				30			29.64 mm			75
750311607	Wurth Elektronik	SMPS TRANSFORMER	SURFACE MOUNT						2		14 uH	TR			3		L29.08XB23.11XH11.43 (mm)	125 Cel			12 V	-40 Cel	11.43 mm	23.11 mm				30			29.64 mm			75
750311608	Wurth Elektronik	SMPS TRANSFORMER	SURFACE MOUNT						2		12 uH	TR			2	Other Transformers	L29.08XB23.11XH11.43 (mm)	125 Cel			24 V	-40 Cel	11.43 mm	23.11 mm				30			29.64 mm			75
750370041	Wurth Elektronik	SMPS TRANSFORMER	SURFACE MOUNT			TIN SILVER			1		50 uH	TR			1	Other Transformers	L9.78XB9.14XH10.54 (mm)	125 Cel			5 V	-40 Cel	10.54 mm	9.14 mm			WIDTH AND HEIGHT DIMENSION INCLUDES TERMINAL ALSO	10	e2		9.78 mm			30
7508110210	Wurth Elektronik	SMPS TRANSFORMER	THROUGH HOLE MOUNT						1		2000 uH	TRAY			2		L15.75XB15.0XH18.5 (mm)	125 Cel			11 V	-40 Cel	18.5 mm	15 mm				120			15.75 mm			200
750813144	Wurth Elektronik	SMPS TRANSFORMER	THROUGH HOLE MOUNTED			Tin/Silver (Sn/Ag)		1	2	4500 V	600 uH	TRAY			2		L16.5XB18.0XH18.0 (mm)	125 Cel	GENERAL PURPOSE		28 V	-40 Cel	18.8 mm	16.5 mm				85	e2		18.5 mm	4:1		265
ETH1-460LD	Coilcraft	SMPS TRANSFORMER	SURFACE MOUNT			Tin/Silver/Copper - Tin - with Nickel barrier	120 W		4		350 uH	TR, EMBOSSED PLASTIC, 13 INCH			4			85 Cel				-40 Cel	10.16 mm	16.5 mm			WIDTH AND HEIGHT DIMENSION INCLUDES TERMINAL ALSO				18.6 mm
PH0270NL	Pulse Electronics	SMPS TRANSFORMER	THROUGH HOLE MOUNTED						2		876 uH				2			125 Cel			12 V	-40 Cel	27.94 mm	18.8 mm				85			28.45 mm		132 KHz	265
DCT15EFD-U44S003	TDK	SMPS TRANSFORMER	SURFACE MOUNT						1		10 uH				1								8.5 mm	16.5 mm			LENGTH & HEIGHT DIM INCLUDE TERMINAL ALSO				22.5 mm
760871135	Wurth Elektronik	SMPS TRANSFORMER	SURFACE MOUNT						1		1250 uH	TR, EMBOSSED PLASTIC, 13 INCH			2			125 Cel		12 V	12 V	-40 Cel	13.5 mm	16.6 mm			HEIGHT DIMENSION INCLUDES TERMINAL ALSO	85			20.6 mm			265
PH0259NL	Pulse Electronics	SMPS TRANSFORMER	THROUGH HOLE MOUNTED						1		1800 uH				1			125 Cel			24 V	-40 Cel	18 mm	16 mm							18.3 mm
750313970	Wurth Elektronik	SMPS TRANSFORMER	SURFACE MOUNT		IEC				1		40 uH	TR, EMBOSSED PLASTIC, 13 INCH			2			125 Cel		3.3 V	3.3 V	-40 Cel	11.43 mm	13.34 mm			LENGTH AND HEIGHT DIMENSION INCLUDES TERMINALS ALSO	18		200 KHz	15.24 mm		300 KHz	42
PL300-100L	Coilcraft	SMPS TRANSFORMER	SURFACE MOUNT		AEC-Q200	MATTE TIN OVER NICKEL	300 W		2		287 uH	TRAY			1		L29.46XB26.67XH10.4 (mm)	125 Cel				-40 Cel	10.4 mm	26.67 mm	48		LENGTH DIM INCLUDES TERMINAL ALSO		e3	200 KHz	29.46 mm		700 KHz
PL300-101L	Coilcraft	SMPS TRANSFORMER	SURFACE MOUNT		AEC-Q200		300 W		2		448 uH	TRAY			1			125 Cel				-40 Cel	10.4 mm	26.67 mm	48		LENGTH DIM INCLUDES TERMINAL ALSO			200 KHz	29.46 mm		700 KHz
PL300-102L	Coilcraft	SMPS TRANSFORMER	SURFACE MOUNT		AEC-Q200	MATTE TIN OVER NICKEL	300 W		2		635 uH	TRAY			1		L29.46XB26.67XH11.4 (mm)	125 Cel				-40 Cel	11.4 mm	26.67 mm	48		LENGTH DIM INCLUDES TERMINAL ALSO		e3	200 KHz	29.46 mm		700 KHz
PL300-104L	Coilcraft	SMPS TRANSFORMER	SURFACE MOUNT		AEC-Q200		300 W		2		1075 uH	TRAY			1			125 Cel				-40 Cel	12.1 mm	26.67 mm	48		LENGTH DIM INCLUDES TERMINAL ALSO			200 KHz	29.46 mm		700 KHz
PA0803NL	Pulse Electronics	SMPS TRANSFORMER	SURFACE MOUNT				140 W		2		240 uH	TRAY			1		L23.37XB21.6XH8.6 (mm)	125 Cel				-40 Cel	8.6 mm	21.6 mm						200 KHz	23.37 mm		700 KHz
PA1131NLT	Pulse Electronics	SMPS TRANSFORMER	SURFACE MOUNT				3 W		2		500 uH	TAPE & REEL			1		L10.67XB13.34XH9.27 (mm)	125 Cel		5 V	8 V	-40 Cel	9.27 mm	13.34 mm			BREADTH & HEIGHT DIM INCLUDES TERMINALS ALSO	33			10.67 mm		200 KHz	57
PA2517NL	Pulse Electronics	SMPS TRANSFORMER	THROUGH HOLE MOUNTED						2		1200 uH				1		L18.2XB16.0XH18.0 (mm)	130 Cel			12 V	-40 Cel	18 mm	16 mm			FLYBACK TRANSFORMER	100			18.2 mm		60 KHz	400
760895441	Wurth Elektronik	SMPS TRANSFORMER	THROUGH HOLE MOUNTED						2		600 uH				2			125 Cel			24 V	-40 Cel	36 mm	36 mm				360			36 mm			400
760895641	Wurth Elektronik	SMPS TRANSFORMER	THROUGH HOLE MOUNTED						2		500 uH				2			125 Cel			24 V	-40 Cel	30 mm	43 mm				360			44 mm			400
760895651	Wurth Elektronik	SMPS TRANSFORMER	THROUGH HOLE MOUNTED						2		500 uH				2			125 Cel			48 V	-40 Cel	30 mm	43 mm				360			44 mm			400
760895741	Wurth Elektronik	SMPS TRANSFORMER	THROUGH HOLE MOUNTED						2		400 uH				2			125 Cel			24 V	-40 Cel	27.5 mm	46 mm				360			48 mm			400
7508112514	Wurth Elektronik	SMPS TRANSFORMER	THROUGH HOLE MOUNTED			Tin/Silver (Sn/Ag)			1		460 uH	TRAY			1			125 Cel			32 V	-40 Cel	14.81 mm	26.3 mm				120	e2	68 KHz	33 mm		110 KHz	375
PA1366NL	Pulse Electronics	SMPS TRANSFORMER	SURFACE MOUNT			Matte Tin (Sn)			2		10 uH				1		L29.21XB21.84XH11.43 (mm)	130 Cel			48 V	-40 Cel	11.43 mm	21.84 mm			LENGTH & HEIGHT DIMENSION INCLUDES TERMINAL ALSO	10	e3		29.21 mm		150 KHz	14
PA1736NL	Pulse Electronics	SMPS TRANSFORMER	SURFACE MOUNT						3		20.5 uH				1		L29.21XB21.84XH11.43 (mm)	130 Cel			12 V	-40 Cel	11.43 mm	21.84 mm			LENGTH & HEIGHT DIMENSION INCLUDES TERMINAL ALSO	36			29.21 mm		200 KHz	72
PA1835NL	Pulse Electronics	SMPS TRANSFORMER	SURFACE MOUNT						3		4.5 uH				1		L29.21XB21.84XH11.43 (mm)	130 Cel			3.3 V	-40 Cel	11.43 mm	21.84 mm			LENGTH & HEIGHT DIMENSION INCLUDES TERMINAL ALSO	9			29.21 mm		200 KHz	36
PA1836NL	Pulse Electronics	SMPS TRANSFORMER	SURFACE MOUNT						2		4.5 uH				1		L29.21XB21.84XH11.43 (mm)	125 Cel			5 V	-40 Cel	11.43 mm	21.84 mm			LENGTH & HEIGHT DIMENSION INCLUDES TERMINAL ALSO	9			29.21 mm		200 KHz	36
PA1837NL	Pulse Electronics	SMPS TRANSFORMER	SURFACE MOUNT						3		4.5 uH				1		L29.21XB21.84XH11.43 (mm)	130 Cel			12 V	-40 Cel	11.43 mm	21.84 mm			LENGTH & HEIGHT DIMENSION INCLUDES TERMINAL ALSO	9			29.21 mm		200 KHz	36
PA2047NL	Pulse Electronics	SMPS TRANSFORMER	SURFACE MOUNT						2		7.2 uH				1		L29.21XB21.84XH11.43 (mm)	130 Cel		3.3 V	5 V	-40 Cel	11.43 mm	21.84 mm			LENGTH & HEIGHT DIMENSION INCLUDES TERMINAL ALSO	9			29.21 mm		250 KHz	36
PA2398NLT	Pulse Electronics	SMPS TRANSFORMER	SURFACE MOUNT						2		100 uH	TAPE & REEL			1		L29.21XB21.84XH11.43 (mm)	130 Cel			12 V	-40 Cel	11.43 mm	21.84 mm			LENGTH & HEIGHT DIMENSION INCLUDES TERMINAL ALSO	36			29.21 mm		250 KHz	72
PA2398NL	Pulse Electronics	SMPS TRANSFORMER	SURFACE MOUNT						2		100 uH				1		L29.21XB21.84XH11.43 (mm)	130 Cel			12 V	-40 Cel	11.43 mm	21.84 mm			LENGTH & HEIGHT DIMENSION INCLUDES TERMINAL ALSO	36			29.21 mm		250 KHz	72
78253/55MC-R	Murata Manufacturing	SMPS TRANSFORMER	SURFACE MOUNT			Bright Tin (Sn)	1 W		1		600 uH	TR, 15 INCH			1		L9.52XB9.0XH6.35 (mm)	85 Cel			5 V	-40 Cel	6.35 mm	9 mm	5				e3		9.52 mm		500 KHz
78253/55MVC-R	Murata Manufacturing	SMPS TRANSFORMER	SURFACE MOUNT			Bright Tin (Sn)	1 W		1		600 uH	TR, 15 INCH			1		L9.52XB9.0XH6.35 (mm)	85 Cel			5 V	-40 Cel	6.35 mm	9 mm	5				e3		9.52 mm		500 KHz
B78304B1032A003	TDK	SMPS TRANSFORMER	SURFACE MOUNT			TIN					10000 uH	TR, BLISTER, 13 INCH						85 Cel				-40 Cel	5.7 mm	7 mm			TURNS RATIO: 1:1:1		e3	10 KHz	8 mm		1600 KHz
PA0367ANLT	Pulse Electronics	SMPS TRANSFORMER	SURFACE MOUNT						1		18 uH	TR			1			130 Cel				-40 Cel	5.2 mm	11.68 mm			LENGTH AND WIDTH DIMENSION INCLUDE TERMINAL ALSO				11.68 mm
31620	Pico Electronics	SMPS TRANSFORMER	SURFACE MOUNT			Tin/Lead (Sn/Pb)	3 W		3						2			70 Cel		5 V	10 V	-55 Cel	7.87 mm	10.16 mm	24		HEIGHT DIM INCLUDE TERMINAL ALSO		e0		10.16 mm
750311307	Wurth Elektronik	SMPS TRANSFORMER	SURFACE MOUNT	750311307		TIN SILVER			2		100 uH	TAPE & REEL	.5 A	1900 mA	1	Other Transformers	15.24mm X 13.34mm X 11.43mm	125 Cel	POWER	24 V	24 V	-40 Cel	11.43 mm	13.34 mm		.104 ohm	LENGTH & HEIGHT DIM INCLUDE TERMINAL ALSO, TURNS RATIO: 6:1; 2:1		e2		15.24 mm			36
PA0491NLT	Pulse Electronics	SMPS TRANSFORMER	SURFACE MOUNT				100 W		1		140 uH	TAPE & REEL			1		L23.37XB20.07XH8.6 (mm)	125 Cel			5 V	-40 Cel	8.6 mm	20.07 mm			48V OUTPUT VOLTAGE IS ALSO AVAILABLE			200 KHz	23.37 mm		700 KHz
PH0801CNLT	Pulse Electronics	SMPS TRANSFORMER	SURFACE MOUNT				160 W		3		153 uH	TR			1			125 Cel				-40 Cel	10.1 mm	21.59 mm			LENGTH AND BREADTH DIMENSIONS INCLUDE TERMINAL ALSO			200 KHz	24.65 mm		700 KHz
PH0803CNLT	Pulse Electronics	SMPS TRANSFORMER	SURFACE MOUNT				160 W		3		240 uH	TR			1			125 Cel				-40 Cel	10.1 mm	21.59 mm			LENGTH AND BREADTH DIMENSIONS INCLUDE TERMINAL ALSO			200 KHz	24.65 mm		700 KHz
PH0804CNLT	Pulse Electronics	SMPS TRANSFORMER	SURFACE MOUNT				160 W		3		290 uH	TR			1			125 Cel				-40 Cel	10.1 mm	21.59 mm			LENGTH AND BREADTH DIMENSIONS INCLUDE TERMINAL ALSO			200 KHz	24.65 mm		700 KHz
PH0804CNL	Pulse Electronics	SMPS TRANSFORMER	SURFACE MOUNT				160 W		3		275 uH	TRAY			1			125 Cel				-40 Cel	10.1 mm	21.59 mm			LENGTH AND BREADTH DIMENSIONS INCLUDE TERMINAL ALSO			200 KHz	24.65 mm		700 KHz

SMPS Transformers

Switched-mode power supply (SMPS) transformers are a type of transformer used in power electronics to convert AC voltage to DC voltage with high efficiency. They are commonly used in applications such as computer power supplies, LED lighting, and motor drives.

The basic principle of an SMPS transformer is to use a high-frequency switching circuit to convert the input voltage to a high-frequency AC voltage, which is then rectified and filtered to produce the DC output voltage. The SMPS transformer is a critical component in the switching circuit, and is designed to handle high frequencies and high voltages without overheating or breaking down.

SMPS transformers are typically designed with a ferrite core, which has a high magnetic permeability and low magnetic losses at high frequencies. The core is usually in the form of a toroid, pot core, or E-core, and is wound with one or more coils to create the primary and secondary windings of the transformer.

The primary winding of the SMPS transformer is connected to the input AC voltage, while the secondary winding is connected to the rectifier and filter circuit, which produces the DC output voltage. The number of turns and the size of the wire used in the windings are determined by the required voltage transformation ratio and the frequency range of the circuit.