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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Description Datasheet Availability Pricing (IDR) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Product
Primary Voltage Rating
Secondary Voltage Rating
Power Rating
Secondary Current Rating
Mounting Style
Primary Winding
Secondary Winding
Length
Width
Height
Series
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
71In Stock
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC, 230 VAC 20 V CT/10 V 2.4 VA 120 mA/240 mA Through Hole Dual Primary Winding Dual Secondary Winding 34.9 mm 28.6 mm 30.8 mm DST
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
21In Stock
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
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
99In Stock
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
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
66In Stock
300Expected 02/04/2026
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
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
64In Stock
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
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
54In Stock
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC, 230 VAC 20 V CT/10 V 6 VA 300 mA/600 mA Through Hole Dual Primary Winding Dual Secondary Winding 41.3 mm 33.3 mm 33.3 mm DST
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
81In Stock
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
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
39In Stock
100Expected 09/04/2026
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC, 230 VAC 36 V CT/18 V 6 VA 170 mA/340 mA Through Hole Dual Primary Winding Dual Secondary Winding 41.3 mm 33.3 mm 33.3 mm DST
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
42In Stock
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC, 230 VAC 56 V CT/28 V 6 VA 110 mA/220 mA Through Hole Dual Primary Winding Dual Secondary Winding 41.3 mm 33.3 mm 33.3 mm DST
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
3In Stock
400Expected 09/04/2026
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
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
98In Stock
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC, 230 VAC 36 V CT/18 V 12 VA 350 mA/700 mA Through Hole Dual Primary Winding Dual Secondary Winding 48.4 mm 40.4 mm 36.9 mm DST
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
58In Stock
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
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
30In Stock
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC, 230 VAC 28 V CT/14 V 20 VA 700 mA/1.4 A Through Hole Dual Primary Winding Dual Secondary Winding 57.2 mm 47.8 mm 36.9 mm DST
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
35In Stock
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC, 230 VAC 10 V CT/5 V 36 VA 3.6 A/7.2 A Through Hole Dual Primary Winding Dual Secondary Winding 66.7 mm 55.5 mm 40.4 mm DST
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
53In Stock
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC, 230 VAC 24 V CT/12 V 36 VA 1.5 A/3 A Through Hole Dual Primary Winding Dual Secondary Winding 66.7 mm 55.5 mm 40.4 mm DST
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
40In Stock
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
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
73In Stock
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
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
4In Stock
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC, 230 VAC 56 V CT/28 V 12 VA 220 mA/440 mA Through Hole Dual Primary Winding Dual Secondary Winding 48.4 mm 40.4 mm 36.9 mm DST
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
16In Stock
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC, 230 VAC 48 V CT/24 V 36 VA 750 mA/1.5 A Through Hole Dual Primary Winding Dual Secondary Winding 66.7 mm 55.5 mm 40.4 mm DST
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
378Expected 12/03/2026
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
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 200
Mult.: 100

Class 2 Transformers 115 VAC, 230 VAC 20 V CT/10 V 1.1 VA 55 mA/110 mA Through Hole Dual Primary Winding Dual Secondary Winding 34.9 mm 28.6 mm 24.6 mm DST
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 100
Mult.: 100

Class 2 Transformers 115 VAC, 230 VAC 36 V CT/18 V 1.1 VA 30 mA/60 mA Through Hole Dual Primary Winding Dual Secondary Winding 34.9 mm 28.6 mm 24.6 mm DST
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 100
Mult.: 100

Class 2 Transformers 115 VAC, 230 VAC 48 V CT/24 V 1.1 VA 23 mA/46 mA Through Hole Dual Primary Winding Dual Secondary Winding 34.9 mm 28.6 mm 24.6 mm DST
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
Non-Stocked Lead-Time 18 Weeks
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
Bel Signal Transformer Power Transformers 50\60 Hz, Laminated Transformer
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 100
Mult.: 100

Class 2 Transformers 115 VAC, 230 VAC 56 V CT/28 V 2.4 VA 45 mA/90 mA Through Hole Dual Primary Winding Dual Secondary Winding 34.9 mm 28.6 mm 30.8 mm DST