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ST Series Power Transformers - Board Mount

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CLP) Filter the results in the table by unit price based on your quantity.	Qty.	Product	Primary Voltage Rating	Secondary Voltage Rating	Power Rating	Secondary Current Rating	Mounting Style	Primary Winding	Secondary Winding	Length	Width	Height	Series
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-2 ST-2-120 Bel Signal Transformer 1: $13.341 196In Stock	Mfr. Part # ST-2-120 Mouser Part # 530-ST-2-120	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-2 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	196In Stock	$13.341 $11.336 $10.880 $10.538 View $8.864 $8.727 $8.624 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	120 V CT/60 V	1.1 VA	10 mA/20 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	24.6 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-7 ST-7-24 Bel Signal Transformer 1: $28.983 78In Stock	Mfr. Part # ST-7-24 Mouser Part # 530-ST-7-24	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-7 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	78In Stock	$28.983 $26.112 $24.927 $23.173 View $20.746 $20.359 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	24 V CT/12 V	36 VA	1.5 A/3 A	Through Hole	Single Primary Winding	Dual Secondary Winding	66.7 mm	55.5 mm	40.4 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-6 ST-6-20 Bel Signal Transformer 1: $24.278 178In Stock	Mfr. Part # ST-6-20 Mouser Part # 530-ST-6-20	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-6 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	178In Stock	$24.278 $21.874 $20.963 $19.242 View $18.696 $17.727 $17.112 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	20 V CT/10 V	20 VA	1 A/2 A	Through Hole	Single Primary Winding	Dual Secondary Winding	57.2 mm	47.8 mm	36.9 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-6 ST-6-36 Bel Signal Transformer 1: $25.303 95In Stock	Mfr. Part # ST-6-36 Mouser Part # 530-ST-6-36	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-6 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	95In Stock	$25.303 $22.808 $21.851 $20.040 View $19.128 $18.251 $17.716 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	36 V CT/18 V	20 VA	550 mA/1.1 A	Through Hole	Single Primary Winding	Dual Secondary Winding	57.2 mm	47.8 mm	36.9 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-3 ST-3-20 Bel Signal Transformer 1: $13.535 58In Stock	Mfr. Part # ST-3-20 Mouser Part # 530-ST-3-20	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-3 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	58In Stock	$13.535 $11.507 $11.040 $10.698 View $9.034 $8.977 $8.864 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	20 V CT/10 V	2.4 VA	120 mA/240 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	30.8 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-5 ST-5-12 Bel Signal Transformer 1: $21.179 37In Stock	Mfr. Part # ST-5-12 Mouser Part # 530-ST-5-12	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-5 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	37In Stock	$21.179 $18.752 $15.938 $15.221 View $14.742 $14.560 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	12.6 V CT/6.3 V	12 VA	1 A/2 A	Through Hole	Single Primary Winding	Dual Secondary Winding	48.4 mm	40.4 mm	36.9 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-7 ST-7-28 Bel Signal Transformer 1: $30.476 38In Stock	Mfr. Part # ST-7-28 Mouser Part # 530-ST-7-28	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-7 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	38In Stock	$30.476 $26.579 $25.736 $22.250 View $21.168 $20.655 $20.234 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	28 V CT/14 V	36 VA	1.3 A/2.6 A	Through Hole	Single Primary Winding	Dual Secondary Winding	66.7 mm	55.5 mm	40.4 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-3 ST-3-48 Bel Signal Transformer 1: $20.120 98In Stock	Mfr. Part # ST-3-48 Mouser Part # 530-ST-3-48	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-3 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	98In Stock	$20.120 $16.918 $16.223 $15.711 View $13.876 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	48 V CT/24 V	2.4 VA	50 mA/100 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	30.8 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-5 ST-5-56 Bel Signal Transformer 1: $27.263 75In Stock	Mfr. Part # ST-5-56 Mouser Part # 530-ST-5-56	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-5 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	75In Stock	$27.263 $24.563 $21.008 $20.803 View $20.598 $20.370 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	56 V CT/28 V	12 VA	220 mA/440 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	48.4 mm	40.4 mm	36.9 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-5 ST-5-36 Bel Signal Transformer 1: $17.932 97In Stock	Mfr. Part # ST-5-36 Mouser Part # 530-ST-5-36	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-5 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	97In Stock	$17.932 $15.688 $13.956 $13.432 View $13.022 $12.600 $12.145 $11.917 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	36 V CT/18 V	12 VA	350 mA/700 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	48.4 mm	40.4 mm	36.9 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-3 ST-3-12 Bel Signal Transformer 1: $14.913 250In Stock	Mfr. Part # ST-3-12 Mouser Part # 530-ST-3-12	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-3 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	250In Stock	$14.913 $13.671 $12.851 $12.407 View $12.384 $11.017 $10.823 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	12.6 V CT/6.3 V	2.4 VA	200 mA/400 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	30.8 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-6 ST-6-16 Bel Signal Transformer 1: $25.668 88In Stock	Mfr. Part # ST-6-16 Mouser Part # 530-ST-6-16	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-6 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	88In Stock	$25.668 $23.116 $22.159 $21.453 View $19.789 $18.821 $18.388 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	16 V CT/8 V	20 VA	1.25 A/2.5 A	Through Hole	Single Primary Winding	Dual Secondary Winding	57.2 mm	47.8 mm	36.9 mm	ST
Power Transformers - Board Mount HF POE SMT XFMR EP10 8PIN 7W ST-2-10 Bel Signal Transformer 1: $19.926 58In Stock	Mfr. Part # ST-2-10 Mouser Part # 530-ST-2-10	Bel Signal Transformer	Power Transformers - Board Mount HF POE SMT XFMR EP10 8PIN 7W Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	58In Stock	$19.926 $18.228 $17.898 $15.790 $13.660	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	10 V CT/5 V	1.1 VA	110 mA/220 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	24.6 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-2 ST-2-12 Bel Signal Transformer 1: $15.323 42In Stock	Mfr. Part # ST-2-12 Mouser Part # 530-ST-2-12	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-2 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	42In Stock	$15.323 $14.856 $14.252 $13.808 View $12.897 $12.316 $11.974 $10.470 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	12.6 V CT/6.3 V	1.1 VA	90 mA/180 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	24.6 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-2 ST-2-24 Bel Signal Transformer 1: $21.327 18In Stock	Mfr. Part # ST-2-24 Mouser Part # 530-ST-2-24	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-2 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	18In Stock	$21.327 $21.088 $13.945 $13.785 View Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	24 V CT/12 V	1.1 VA	45 mA/90 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	24.6 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-2 ST-2-28 Bel Signal Transformer 1: $12.988 183In Stock	Mfr. Part # ST-2-28 Mouser Part # 530-ST-2-28	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-2 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	183In Stock	$12.988 $11.723 $11.245 $10.709 View $10.367 $8.966 $8.727 $8.522 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	28 V CT/14 V	1.1 VA	40 mA/80 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	24.6 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-2 ST-2-48 Bel Signal Transformer 1: $19.596 28In Stock	Mfr. Part # ST-2-48 Mouser Part # 530-ST-2-48	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-2 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	28In Stock	$19.596 $17.921 $17.602 $15.551 $13.421	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	48 V CT/24 V	1.1 VA	23 mA/46 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	24.6 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-2 ST-3-10 Bel Signal Transformer 1: $14.617 92In Stock	Mfr. Part # ST-3-10 Mouser Part # 530-ST-3-10	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-2 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	92In Stock	$14.617 $13.045 $12.521 $12.122 View $11.735 $11.199 $9.707 $9.502 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	10 V CT/5 V	2.4 VA	250 mA/500 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	30.8 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-3 ST-3-16 Bel Signal Transformer 1: $11.735 173In Stock	Mfr. Part # ST-3-16 Mouser Part # 530-ST-3-16	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-3 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	173In Stock	$11.735 $10.755 $10.117 $9.752 View $9.445 $9.148 $8.385 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	16 V CT/8 V	2.4 VA	150 mA/300 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	30.8 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-3 ST-3-28 Bel Signal Transformer 1: $12.498 66In Stock	Mfr. Part # ST-3-28 Mouser Part # 530-ST-3-28	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-3 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	66In Stock	$12.498 $10.743 $9.707 $9.502 View $9.148 $8.772 $8.727 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	28 V CT/14 V	2.4 VA	85 mA/170 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	30.8 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-3 ST-3-36 Bel Signal Transformer 1: $13.170 28In Stock 200Expected 1/28/2027	Mfr. Part # ST-3-36 Mouser Part # 530-ST-3-36	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-3 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	28In Stock 200Expected 1/28/2027	$13.170 $11.700 $11.222 $10.869 View $10.516 $9.251 $8.989 $8.772	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	36 V CT/18 V	2.4 VA	65 mA/130 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	30.8 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-3 ST-3-56 Bel Signal Transformer 1: $13.341 13In Stock	Mfr. Part # ST-3-56 Mouser Part # 530-ST-3-56	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-3 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	13In Stock	$13.341 $12.395 $12.156 $10.971 $9.308	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	56 V CT/28 V	2.4 VA	45 mA/90 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	30.8 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-4 ST-4-16 Bel Signal Transformer 1: $15.426 44In Stock 200Expected 10/30/2026	Mfr. Part # ST-4-16 Mouser Part # 530-ST-4-16	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-4 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	44In Stock 200Expected 10/30/2026	$15.426 $13.899 $13.330 $11.324 View $10.994 $10.390 $9.832 $9.570 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	16 V CT/8 V	6 VA	400 mA/800 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	41.3 mm	33.3 mm	33.3 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-4 ST-4-20 Bel Signal Transformer 1: $14.252 148In Stock	Mfr. Part # ST-4-20 Mouser Part # 530-ST-4-20	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-4 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	148In Stock	$14.252 $13.067 $12.509 $12.498 View $10.857 $10.424 $10.162 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	20 V CT/10 V	6 VA	300 mA/600 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	41.3 mm	33.3 mm	33.3 mm	ST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-4 ST-4-24 Bel Signal Transformer 1: $13.079 120In Stock 500Expected 11/20/2026	Mfr. Part # ST-4-24 Mouser Part # 530-ST-4-24	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-4 Learn More about Bel Signal Transformer signal transformer st transformers	Datasheet	120In Stock 500Expected 11/20/2026	$13.079 $11.997 $11.279 $10.857 View $10.527 $10.231 $10.185 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC	24 V CT/12 V	6 VA	250 mA/500 mA	Through Hole	Single Primary Winding	Dual Secondary Winding	41.3 mm	33.3 mm	33.3 mm	ST