UL Telecom Transformers 24

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Part	Manufacturer	Transformer Type	Mounting Feature	Manufacturer Series	Approvals (V)	Terminal Finish	Impedance (Primary)	Impedance (Secondary)	No. of Winding (Primary)	Maximum Pulse Rise Time	Isolation Voltage	Insertion Loss	Inductance (Primary)	Packing Method	Minimum ET Product	No. of Winding (Secondary)	Sub-Category	Dimensions	Maximum Operating Temperature	Application	Minimum Operating Temperature	Height	Width	Load Resistance	Additional Features	JESD-609 Code	Minimum Operating Frequency	Length	Turns Ratio (Np:Ns)	Maximum Operating Frequency
SM-LP-5001E	Bourns	TELECOM TRANSFORMER	SURFACE MOUNT		UL	TIN SILVER COPPER	600 OHMS	600 OHMS	1			2 dB		TAPE & REEL		1	Other Transformers	L12.5XB9.6XH7.36 (mm)	85 Cel	MATCHING	-20 Cel	7.36 mm	9.6 mm	115 ohm	TURNS RATIO: 1:1, HEIGHT DIMENSIONS INCLUDE TERMINALS ALSO	e1	.2 KHz	12.5 mm	1:1	4 KHz
SM-LP-5001	Bourns	TELECOM TRANSFORMER	SURFACE MOUNT		UL	TIN SILVER COPPER	600 OHMS	600 OHMS	1			2 dB	3800000 uH	TUBE		1	Other Transformers	L12.5XB9.6XH7.36 (mm)	85 Cel	SIGNAL	-20 Cel	7.36 mm	9.6 mm	115 ohm	TURNS RATIO: 1:1, HEIGHT DIMENSIONS INCLUDE TERMINALS ALSO	e1	.2 KHz	12.5 mm	1:1	4 KHz
LM-NP-1001-B1L	Bourns	TELECOM TRANSFORMER	THROUGH HOLE MOUNTED		UL	MATTE TIN	600 OHMS	600 OHMS	1			1.5 dB	2800000 uH			1		L17.7XB17.7XH12.6 (mm)	60 Cel	SIGNAL	-10 Cel	12.6 mm	17.7 mm	66 ohm	TURNS RATIO: 1:1	e3	.2 KHz	17.7 mm	1:1	3.5 KHz
PE-65415NL	Pulse Electronics	TELECOM TRANSFORMER	THROUGH HOLE MOUNTED		UL									TUBE				L12.7XB8.89XH6.35 (mm)	70 Cel		0 Cel	6.35 mm	8.89 mm		TURNS RATIO: 1CT:2CT			12.7 mm
T3001NLT	Pulse Electronics	TELECOM TRANSFORMER	SURFACE MOUNT	T3001	UL				1		1500 V			TAPE & REEL		1		L7.62XB7.0XH6.35 (mm)	85 Cel	SIGNAL	-40 Cel	6.35 mm	7 mm		TURNS RATIO: 1:1, HEIGHT DIM INCLUDES TERMINAL ALSO		200 KHz	7.62 mm	1:1	340000 KHz
T1094NL	Pulse Electronics	TELECOM TRANSFORMER	SURFACE MOUNT	T1094	UL	Matte Tin (Sn)			2		1500 V		1200 uH	TUBE		2	Other Transformers	L12.83XB7.11XH6.22 (mm)	85 Cel	SIGNAL	-40 Cel	6.22 mm	7.11 mm		HEIGHT DIM INCLUDES TERMINAL ALSO, TURNS RATIO: 1CT:1CT; 1CT:2CT	e3		12.83 mm	1CT:1CT/1CT:2CT
TTC-5023	Tamura	TELECOM TRANSFORMER	SURFACE MOUNT	TTC-5023	UL		600 OHMS	600 OHMS	1			2 dB	3800000 uH			1	Other Transformers	L12.5XB9.6XH7.59 (mm)		SIGNAL		7.59 mm	9.6 mm	115 ohm	HEIGHT INCLUDES TERMINAL		.2 KHz	12.5 mm	1:1	4 KHz
PE-65389NL	Pulse Electronics	TELECOM TRANSFORMER	THROUGH HOLE MOUNTED		UL				1		1500 V		1500 uH	TUBE		1	Other Transformers	L12.7XB8.89XH6.35 (mm)	70 Cel	SIGNAL	0 Cel	6.35 mm	8.89 mm	.9 ohm	TURNS RATIO: 1:1/1.26			12.7 mm	1:1/1.26
82154R-LF1	Wurth Elektronik	TELECOM TRANSFORMER	SURFACE MOUNT		UL	Tin/Silver (Sn/Ag)			1				30 uH	TAPE & REEL		1	Other Transformers	L111.51XB232.16XH50.29 (mm)		SIGNAL		50.29 mm	232.16 mm	.35 ohm	BREADTH AND HEIGHT DIM INCLUDE TERMINAL ALSO, TURNS RATIO: 1CT:1.7	e2		111.51 mm	1:1.67
TX1287	Pulse Electronics	TELECOM TRANSFORMER	SURFACE MOUNT	TX1287	UL				2		1500 V		1200 uH	TUBE		2	Other Transformers	12.83mm X 7.11mm X 6.22mm	85 Cel	SIGNAL	-40 Cel	6.22 mm	7.11 mm	.7 ohm	HEIGHT DIM INCLUDES TERMINAL ALSO, TURNS RATIO: 1CT:2.42CT; 1CT:2.42CT			12.83 mm	1CT:2.42CT/1CT:2.42CT
PE-65861NL	Pulse Electronics	TELECOM TRANSFORMER	SURFACE MOUNT	PE-65861	UL									TUBE				L12.83XB7.11XH6.22 (mm)	70 Cel		0 Cel	6.22 mm	7.11 mm		HEIGHT DIM INCLUDES TERMINAL ALSO, TURNS RATIO: 1CT:2CT; 1CT:2CT			12.83 mm
PE-65415	Pulse Electronics	TELECOM TRANSFORMER	THROUGH HOLE MOUNTED	PE-65415	UL									TUBE				L12.7XB8.89XH6.35 (mm)	70 Cel		0 Cel	6.35 mm	8.89 mm		TURNS RATIO: 1CT:2CT			12.7 mm
T3001NL	Pulse Electronics	TELECOM TRANSFORMER	SURFACE MOUNT		UL	Matte Tin (Sn)								TUBE				L7.62XB7.0XH6.35 (mm)	85 Cel		-40 Cel	6.35 mm	7 mm		TURNS RATIO: 1:1, HEIGHT DIM INCLUDES TERMINAL ALSO	e3	200 KHz	7.62 mm		340000 KHz
AS8456-A	Coilcraft	TELECOM TRANSFORMER	SURFACE MOUNT	AS8456-A	UL													17.91mm X 13.46mm X 12.7mm	85 Cel		-40 Cel	12.7 mm	13.46 mm		DESIGNED TO USE WITH ANLG DVC AD20MSP910/918 CO/CPE, LG AND HEIGHT INCLUDES TERM, TURNS RATIO: 1:1			17.91 mm
LM-LP-1005L	Bourns	TELECOM TRANSFORMER	THROUGH HOLE MOUNTED		UL		600 OHMS	600 OHMS										L17.7XB17.7XH12.6 (mm)	60 Cel		-10 Cel	12.6 mm	17.7 mm		TURNS RATIO: 1:1		.2 KHz	17.7 mm		3.5 KHz
PE-65351NL	Pulse Electronics	TELECOM TRANSFORMER	THROUGH HOLE MOUNTED		UL				1		1500 V		1200 uH	TUBE		1	Other Transformers	L12.7XB8.89XH6.35 (mm)	70 Cel	SIGNAL	0 Cel	6.35 mm	8.89 mm	1.3 ohm	TURNS RATIO: 1:2CT			12.7 mm	1:2
PE-65812NL	Pulse Electronics	TELECOM TRANSFORMER	SURFACE MOUNT		UL	Tin/Silver (Sn/Ag) - hot dipped			1	25 ns	2000 V	3 dB	2500 uH	TUBE	20 V-us	1	Other Transformers	L12.06XB10.16XH8.64 (mm)	70 Cel	SIGNAL	0 Cel	8.64 mm	10.16 mm		TURNS RATIO: 1:1, HEIGHT INCLUDES TERMINAL ALSO		100 KHz	12.06 mm	1:1	55000 KHz
PE-65870NL	Pulse Electronics	TELECOM TRANSFORMER	SURFACE MOUNT		UL	Matte Tin (Sn)								TUBE				L12.83XB7.11XH6.22 (mm)	70 Cel		0 Cel	6.22 mm	7.11 mm		HEIGHT DIM INCLUDES TERMINAL ALSO, TURNS RATIO: 1CT:1.15CT; 1CT:1.15CT	e3		12.83 mm
LM-LP-1004L	Bourns	TELECOM TRANSFORMER	THROUGH HOLE MOUNTED		UL		600 OHMS	600 OHMS										L17.7XB17.7XH12.6 (mm)	60 Cel		-10 Cel	12.6 mm	17.7 mm		TURNS RATIO: 1:1		.2 KHz	17.7 mm		3.5 KHz
AS7787-A	Coilcraft	TELECOM TRANSFORMER	THROUGH HOLE MOUNTED	AS7787-A	UL													13.97mm X 13.97mm X 12.7mm	85 Cel		-40 Cel	12.7 mm	13.97 mm		DESIGNED TO USE WITH ANLG DVC AD20MSP910/918 CO/CPE, TURNS RATIO: 1:1			13.97 mm
LM-LP-1001L	Bourns	TELECOM TRANSFORMER	THROUGH HOLE MOUNTED		UL		600 OHMS	600 OHMS										L17.7XB17.7XH12.6 (mm)	60 Cel		-10 Cel	12.6 mm	17.7 mm		TURNS RATIO: 1:1		.2 KHz	17.7 mm		3.5 KHz
SM-LP-5002E	Bourns	TELECOM TRANSFORMER	SURFACE MOUNT		UL	TIN SILVER	600 OHMS							TAPE & REEL				L12.5XB9.6XH7.36 (mm)	85 Cel		-20 Cel	7.36 mm	9.6 mm		TURNS RATIO: 1:1, HEIGHT DIMENSIONS INCLUDE TERMINALS ALSO	e2	.2 KHz	12.5 mm		4 KHz
X8390-A	Coilcraft	TELECOM TRANSFORMER	SURFACE MOUNT	X8390-A	UL									TAPE & REEL				L17.75XB13.46XH12.7 (mm)	85 Cel		-40 Cel	12.7 mm	13.46 mm		LENGTH AND HEIGHT DIM INCLUDES TERMINALS ALSO, TURNS RATIO: 1:1			17.75 mm
LM-NP-1003L	Bourns	TELECOM TRANSFORMER	THROUGH HOLE MOUNTED		UL		600 OHMS	600 OHMS	1			1.5 dB	2800000 uH			2	Other Transformers	L17.7XB17.7XH12.6 (mm)	60 Cel	SIGNAL	-10 Cel	12.6 mm	17.7 mm	66 ohm	TURNS RATIO: 1:1		.2 KHz	17.7 mm	1:1	3.5 KHz

Telecom Transformers

Telecom transformers are a type of transformer used in telecommunications equipment to isolate and match impedance between different parts of a circuit. They are commonly used in applications such as modems, routers, switches, and telephone systems.

The primary function of a telecom transformer is to isolate the AC signal from the equipment to prevent noise and interference from other components in the circuit. Telecom transformers are also used to match impedance between the input and output stages of the circuit to ensure maximum power transfer and signal integrity.

Telecom transformers are typically designed to operate at low frequencies, ranging from a few Hz to several kHz, depending on the specific application. They are designed to handle low power levels and have low losses. The design of a telecom transformer is usually optimized for a specific frequency range and bandwidth.

Telecom transformers are typically constructed with a magnetic core made of ferrite or powdered iron, and one or more coils wound around the core. The coils are usually made of copper wire with a thin insulating layer. The number of turns and the size of the wire are determined by the required impedance transformation and the frequency range of the circuit.