Power Transformers - Board Mount

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DST Class 2 Transformers

Signal Transformer / Bel DST Class 2 Transformers provide superior isolation and low capacitive coupling. The Split Bobbin-Low Power transformers feature a power rating of 1.1VA to 36VA and are available in 60 standard configurations. Signal Transformer / Bel DST Transformers are recognized to UL 506 and meet the specifications for UL 1446 (E66312).

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CRC) 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 DST-4 DST-4-12 Bel Signal Transformer 1: ₡6 282,02 361In Stock	Mfr. Part # DST-4-12 Mouser Part # 530-DST-4-12	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-4 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	361In Stock	₡6 282,02 ₡5 943,71 ₡5 631,44 ₡5 449,27 View ₡5 230,68 ₡5 079,74 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	12.6 V CT/6.3 V	6 VA	500 mA/1 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	41.3 mm	33.3 mm	33.3 mm	DST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-4 DST-4-16 Bel Signal Transformer 1: ₡6 641,14 299In Stock	Mfr. Part # DST-4-16 Mouser Part # 530-DST-4-16	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-4 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	299In Stock	₡6 641,14 ₡6 282,02 ₡5 860,44 ₡5 631,44 View ₡5 459,68 ₡5 282,72 ₡4 960,04 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	16 V CT/8 V	6 VA	400 mA/800 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	41.3 mm	33.3 mm	33.3 mm	DST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-4 DST-4-24 Bel Signal Transformer 1: ₡8 379,49 170In Stock	Mfr. Part # DST-4-24 Mouser Part # 530-DST-4-24	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-4 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	170In Stock	₡8 379,49 ₡7 957,92 ₡7 411,43 ₡7 119,97 View ₡6 630,73 ₡5 719,91 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	24 V CT/12 V	6 VA	250 mA/500 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	41.3 mm	33.3 mm	33.3 mm	DST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-5 DST-5-16 Bel Signal Transformer 1: ₡7 541,54 372In Stock	Mfr. Part # DST-5-16 Mouser Part # 530-DST-5-16	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-5 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	372In Stock	₡7 541,54 ₡7 177,22 ₡6 516,23 ₡6 266,40 View ₡6 058,22 ₡5 704,30 ₡5 454,48 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	16 V CT/8 V	12 VA	800 mA/1.6 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	48.4 mm	40.4 mm	36.9 mm	DST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-7 DST-7-28 Bel Signal Transformer 1: ₡14 619,87 96In Stock	Mfr. Part # DST-7-28 Mouser Part # 530-DST-7-28	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-7 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	96In Stock	₡14 619,87 ₡13 032,45 ₡11 595,97 ₡11 174,39 View ₡10 679,95 ₡10 471,76 ₡10 450,95 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	28 V CT/14 V	36 VA	1.3 A/2.6 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	66.7 mm	55.5 mm	40.4 mm	DST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-5 DST-5-20 Bel Signal Transformer 1: ₡6 864,94 143In Stock	Mfr. Part # DST-5-20 Mouser Part # 530-DST-5-20	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-5 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	143In Stock	₡6 864,94 ₡6 339,27 ₡6 120,67 ₡5 959,33 View ₡5 803,19 ₡5 589,80 ₡5 563,78 ₡5 516,93 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	20 V CT/10 V	12 VA	600 mA/1.2 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	48.4 mm	40.4 mm	36.9 mm	DST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-3 DST-3-48 Bel Signal Transformer 1: ₡8 514,81 111In Stock	Mfr. Part # DST-3-48 Mouser Part # 530-DST-3-48	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-3 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	111In Stock	₡8 514,81 ₡7 177,22 ₡6 880,55 ₡6 479,79 ₡5 506,52	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	48 V CT/24 V	2.4 VA	50 mA/100 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	30.8 mm	DST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-6 DST-6-12 Bel Signal Transformer 1: ₡11 798,95 47In Stock	Mfr. Part # DST-6-12 Mouser Part # 530-DST-6-12	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-6 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	47In Stock	₡11 798,95 ₡10 633,11 ₡9 248,67 ₡9 233,06 View ₡8 941,60 ₡8 660,54 ₡8 509,61 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	12.6 V CT/6.3 V	20 VA	1.6 A/3.2 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	57.2 mm	47.8 mm	36.9 mm	DST
Power Transformers - Board Mount Radial Inductor with Leads,8200 H, 0.13A,Q>20 DST-2-10 Bel Signal Transformer 1: ₡7 015,87 107In Stock	Mfr. Part # DST-2-10 Mouser Part # 530-DST-2-10	Bel Signal Transformer	Power Transformers - Board Mount Radial Inductor with Leads,8200 H, 0.13A,Q>20 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	107In Stock	₡7 015,87 ₡6 240,38 ₡6 000,97 ₡5 261,91 View ₡4 658,17 ₡4 652,96 ₡4 647,76 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	10 V CT/5 V	1.1 VA	110 mA/220 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	24.6 mm	DST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-3 DST-4-10 Bel Signal Transformer 1: ₡7 650,84 99In Stock	Mfr. Part # DST-4-10 Mouser Part # 530-DST-4-10	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-3 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	99In Stock	₡7 650,84 ₡6 864,94 ₡6 599,50 ₡5 896,87 View ₡5 287,93 ₡5 204,65 ₡5 173,43 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	10 V CT/5 V	6 VA	600 mA/1.2 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	41.3 mm	33.3 mm	33.3 mm	DST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-2 DST-2-56 Bel Signal Transformer 1: ₡7 099,15 34In Stock	Mfr. Part # DST-2-56 Mouser Part # 530-DST-2-56	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-2 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	34In Stock	₡7 099,15 ₡6 037,40 ₡5 792,78 ₡5 537,75 ₡4 699,80	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	56 V CT/28 V	1.1 VA	20 mA/40 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	24.6 mm	DST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-7 DST-7-12 Bel Signal Transformer 1: ₡14 619,87 37In Stock	Mfr. Part # DST-7-12 Mouser Part # 530-DST-7-12	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-7 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	37In Stock	₡14 619,87 ₡13 172,98 ₡10 830,88 ₡10 820,48 View ₡10 815,27 ₡10 804,86 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	12.6 V CT/6.3 V	36 VA	2.85 A/5.7 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	66.7 mm	55.5 mm	40.4 mm	DST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-5 DST-5-24 Bel Signal Transformer 1: ₡7 999,55 148In Stock	Mfr. Part # DST-5-24 Mouser Part # 530-DST-5-24	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-5 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	148In Stock	₡7 999,55 ₡7 307,33 ₡6 875,35 ₡6 854,53 View ₡6 635,93 ₡6 349,68 ₡6 146,70 ₡5 626,23	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	24 V CT/12 V	12 VA	500 mA/1 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	48.4 mm	40.4 mm	36.9 mm	DST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-6 DST-6-16 Bel Signal Transformer 1: ₡12 168,48 141In Stock	Mfr. Part # DST-6-16 Mouser Part # 530-DST-6-16	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-6 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	141In Stock	₡12 168,48 ₡10 955,80 ₡10 836,09 ₡10 492,58 View ₡10 164,69 ₡8 546,04 ₡8 353,47 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	16 V CT/8 V	20 VA	1.25 A/2.5 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	57.2 mm	47.8 mm	36.9 mm	DST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-6 DST-6-36 Bel Signal Transformer 1: ₡11 892,63 116In Stock	Mfr. Part # DST-6-36 Mouser Part # 530-DST-6-36	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-6 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	116In Stock	₡11 892,63 ₡10 695,56 ₡10 242,76 ₡9 914,87 View ₡9 592,18 ₡8 197,33 ₡7 999,55 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	36 V CT/18 V	20 VA	550 mA/1.1 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	57.2 mm	47.8 mm	36.9 mm	DST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-2 DST-2-12 Bel Signal Transformer 1: ₡7 021,08 72In Stock	Mfr. Part # DST-2-12 Mouser Part # 530-DST-2-12	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-2 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	72In Stock	₡7 021,08 ₡6 334,06 ₡6 073,83 ₡5 428,45 View ₡5 272,31 ₡4 934,01 ₡4 850,74 ₡4 757,05 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	12.6 V CT/6.3 V	1.1 VA	90 mA/180 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	24.6 mm	DST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-2 DST-2-16 Bel Signal Transformer 1: ₡7 416,63 28In Stock 100Expected 11/13/2026	Mfr. Part # DST-2-16 Mouser Part # 530-DST-2-16	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-2 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	28In Stock 100Expected 11/13/2026	₡7 416,63 ₡6 708,80 ₡6 438,16 ₡6 120,67 View ₡5 917,69 ₡5 636,64 ₡4 934,01 ₡4 845,53 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	16 V CT/8 V	1.1 VA	70 mA/140 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	24.6 mm	DST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-2 DST-2-24 Bel Signal Transformer 1: ₡6 781,66 48In Stock 200On Order	Mfr. Part # DST-2-24 Mouser Part # 530-DST-2-24	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-2 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	48In Stock 200On Order	₡6 781,66 ₡6 219,56 ₡5 844,83 ₡5 636,64 View ₡5 459,68 ₡5 194,24 ₡5 053,72 ₡4 975,65	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	24 V CT/12 V	1.1 VA	45 mA/90 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	24.6 mm	DST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-2 DST-2-28 Bel Signal Transformer 1: ₡7 546,75 35In Stock	Mfr. Part # DST-2-28 Mouser Part # 530-DST-2-28	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-2 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	35In Stock	₡7 546,75 ₡6 943,01 ₡6 729,62 ₡6 084,24 ₡5 168,22	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	28 V CT/14 V	1.1 VA	40 mA/80 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	24.6 mm	DST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-2 DST-3-10 Bel Signal Transformer 1: ₡6 755,64 40In Stock	Mfr. Part # DST-3-10 Mouser Part # 530-DST-3-10	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-2 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	40In Stock	₡6 755,64 ₡6 037,40 ₡5 787,58 ₡5 610,62 View ₡4 918,40 ₡4 705,01 ₡4 626,94 ₡4 538,46 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	10 V CT/5 V	2.4 VA	250 mA/500 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	30.8 mm	DST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-3 DST-3-12 Bel Signal Transformer 1: ₡7 468,68 5In Stock	Mfr. Part # DST-3-12 Mouser Part # 530-DST-3-12	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-3 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	5In Stock	₡7 468,68 ₡6 760,85 ₡6 485,00 ₡5 678,28 View ₡5 673,07 ₡5 074,54 ₡5 001,67 ₡4 970,44 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	12.6 V CT/6.3 V	2.4 VA	20 mA/40 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	30.8 mm	DST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-3 DST-3-16 Bel Signal Transformer 1: ₡8 572,07 17In Stock 200Expected 11/20/2026	Mfr. Part # DST-3-16 Mouser Part # 530-DST-3-16	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-3 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	17In Stock 200Expected 11/20/2026	₡8 572,07 ₡7 510,32 ₡7 203,24 ₡6 979,44 View ₡6 750,44 ₡6 443,36 ₡6 266,40 ₡6 073,83 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	16 V CT/8 V	2.4 VA	150 mA/300 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	30.8 mm	DST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-3 DST-3-28 Bel Signal Transformer 1: ₡7 317,74 22In Stock 100On Order	Mfr. Part # DST-3-28 Mouser Part # 530-DST-3-28	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-3 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	22In Stock 100On Order	₡7 317,74 ₡6 406,93 ₡6 282,02 ₡5 740,73 ₡4 871,56	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	28 V CT/14 V	2.4 VA	85 mA/170 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	30.8 mm	DST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-3 DST-3-36 Bel Signal Transformer 1: ₡6 838,92 80In Stock	Mfr. Part # DST-3-36 Mouser Part # 530-DST-3-36	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-3 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	80In Stock	₡6 838,92 ₡6 479,79 ₡5 423,25 ₡5 116,17 View ₡4 980,85 ₡4 913,19 Quote	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	36 V CT/18 V	2.4 VA	65 mA/130 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	34.9 mm	28.6 mm	30.8 mm	DST
Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-4 DST-4-120 Bel Signal Transformer 1: ₡7 791,37 35In Stock	Mfr. Part # DST-4-120 Mouser Part # 530-DST-4-120	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN DST-4 Learn More about Bel Signal Transformer signal transformers dst transformers	Datasheet	35In Stock	₡7 791,37 ₡7 010,67 ₡6 870,14 ₡6 021,78 View ₡5 719,91 ₡5 496,11 ₡5 392,02 ₡5 324,36	Min.: 1 Mult.: 1	Class 2 Transformers	115 VAC, 230 VAC	120 V CT/60 V	6 VA	50 mA/100 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	41.3 mm	33.3 mm	33.3 mm	DST