ST Class 2 Transformers

Signal Transformer / Bel ST Class 2 Transformers provide superior isolation and low capacitive coupling. These split-bobbin, low-power transformers feature a power rating of 1.1VA to 36VA and are available in 60 standard configurations. Signal Transformer / Bel ST Class 2 Transformers are recognized to UL 506 and meet the specifications for UL 1446 (E66312).

Results: 60
Select Image Part #
 Mfr.
Description Datasheet Availability Pricing (EUR) 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 - Board Mount TRANSFORMER SPLIT-TRAN ST-6
Datasheet
178In Stock
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
Bel Signal Transformer Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-7
Datasheet
78In Stock
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
Bel Signal Transformer Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-2
Datasheet
196In Stock
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
Bel Signal Transformer Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-6
Datasheet
95In Stock
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
Bel Signal Transformer Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-7
Datasheet
48In Stock
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
Bel Signal Transformer Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-3
Datasheet
80In Stock
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
Bel Signal Transformer Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-5
Datasheet
37In Stock
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
Bel Signal Transformer Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-5
Datasheet
75In Stock
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
Bel Signal Transformer Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-3
Datasheet
98In Stock
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
Bel Signal Transformer Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-5
Datasheet
97In Stock
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
Bel Signal Transformer Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-2
Datasheet
200In Stock
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
Bel Signal Transformer Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-2
Datasheet
197In Stock
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
Bel Signal Transformer Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-3
Datasheet
250In Stock
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
Bel Signal Transformer Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-6
Datasheet
90In Stock
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
Bel Signal Transformer Power Transformers - Board Mount HF POE SMT XFMR EP10 8PIN 7W
Datasheet
64In Stock
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
Bel Signal Transformer Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-2
Datasheet
43In Stock
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
Bel Signal Transformer Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-2
Datasheet
18In Stock
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
Bel Signal Transformer Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-2
Datasheet
28In Stock
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
Bel Signal Transformer Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-3
Datasheet
132In Stock
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC 24 V CT/12 V 2.4 VA 100 mA/200 mA Through Hole Single Primary Winding Dual Secondary Winding 34.9 mm 28.6 mm 30.8 mm ST
Bel Signal Transformer Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-3
Datasheet
67In Stock
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
Bel Signal Transformer Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-3
Datasheet
148In Stock
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
Bel Signal Transformer Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-3
Datasheet
14In Stock
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
Bel Signal Transformer Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-4
Datasheet
54In Stock
200Expected 10/23/2026
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
Bel Signal Transformer Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-4
Datasheet
48In Stock
100On Order
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
Bel Signal Transformer Power Transformers - Board Mount TRANSFORMER SPLIT-TRAN ST-4
Datasheet
113In Stock
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