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 (GBP) Filter the results in the table by unit price based on your quantity.
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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 - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
329In Stock
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 - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
269In Stock
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
Bel Signal Transformer Power Transformers - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
102In Stock
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC, 230 VAC 24 V CT/12 V 20 VA 800 mA/1.6 A Through Hole Dual Primary Winding Dual Secondary Winding 57.2 mm 47.8 mm 36.9 mm DST
Bel Signal Transformer Power Transformers - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
165In Stock
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC, 230 VAC 28 V CT/14 V 6 VA 200 mA/400 mA Through Hole Dual Primary Winding Dual Secondary Winding 41.3 mm 33.3 mm 33.3 mm DST
Bel Signal Transformer Power Transformers - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
152In Stock
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC, 230 VAC 36 V CT/18 V 36 VA 1 A/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 - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
107In Stock
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
Bel Signal Transformer Power Transformers - Board Mount 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 - Board Mount 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 - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
36In 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 - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
123In Stock
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
Bel Signal Transformer Power Transformers - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
85In Stock
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
Bel Signal Transformer Power Transformers - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
138In Stock
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
Bel Signal Transformer Power Transformers - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
37In Stock
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
Bel Signal Transformer Power Transformers - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
186In Stock
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
Bel Signal Transformer Power Transformers - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
1,056In Stock
400Expected 26/05/2026
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC, 230 VAC 24 V CT/12 V 2.4 VA 100 mA/200 mA Through Hole Dual Primary Winding Dual Secondary Winding 34.9 mm 28.6 mm 30.8 mm DST
Bel Signal Transformer Power Transformers - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
364In Stock
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 - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
144In Stock
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
Bel Signal Transformer Power Transformers - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
182In Stock
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
Bel Signal Transformer Power Transformers - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
72In 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 - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
17In Stock
100On Order
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC, 230 VAC 120 V CT/60 V 1.1 VA 10 mA/20 mA Through Hole Dual Primary Winding Dual Secondary Winding 34.9 mm 28.6 mm 24.6 mm DST
Bel Signal Transformer Power Transformers - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
97In Stock
200Expected 04/06/2026
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
Bel Signal Transformer Power Transformers - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
46In Stock
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
Bel Signal Transformer Power Transformers - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
46In 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 - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
9In 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 - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
113In Stock
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