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).

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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 - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
148In Stock
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC 36 V CT/18 V 6 VA 170 mA/340 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 50\60 Hz, Laminated Transformer
Datasheet
44In Stock
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC 20 V CT/10 V 12 VA 600 mA/1.2 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 50\60 Hz, Laminated Transformer
Datasheet
19In Stock
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC 28 V CT/14 V 12 VA 420 mA/840 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 50\60 Hz, Laminated Transformer
Datasheet
26In Stock
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC 48 V CT/24 V 12 VA 250 mA/500 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 50\60 Hz, Laminated Transformer
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 50\60 Hz, Laminated Transformer
Datasheet
5In Stock
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC 24 V CT/12 V 20 VA 800 mA/1.6 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 50\60 Hz, Laminated Transformer
Datasheet
14In Stock
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC 28 V CT/14 V 20 VA 700 mA/1.4 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 50\60 Hz, Laminated Transformer
Datasheet
18In Stock
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC 12.6 V CT/6.3 V 36 VA 2.85 A/5.7 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 50\60 Hz, Laminated Transformer
Datasheet
44In Stock
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC 20 V CT/10 V 36 VA 1.8 A/3.6 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 50\60 Hz, Laminated Transformer
Datasheet
183Expected 17/09/2026
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 50\60 Hz, Laminated Transformer
Datasheet
176Expected 18/08/2026
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
Bel Signal Transformer Power Transformers - Board Mount 50\60 Hz, Laminated Transformer
Datasheet
100Expected 25/09/2026
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC 16 V CT/8 V 12 VA 800 mA/1.6 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 50\60 Hz, Laminated Transformer
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC 16 V CT/8 V 1.1 VA 70 mA/140 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 50\60 Hz, Laminated Transformer
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC 20 V CT/10 V 1.1 VA 55 mA/110 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 50\60 Hz, Laminated Transformer
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC 36 V CT/18 V 1.1 VA 30 mA/60 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 50\60 Hz, Laminated Transformer
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC 56 V CT/28 V 1.1 VA 20 mA/40 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 50\60 Hz, Laminated Transformer
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC 120 V CT/60 V 2.4 VA 20 mA/40 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 50\60 Hz, Laminated Transformer
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC 10 V CT/5 V 6 VA 600 mA/1.2 A 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 50\60 Hz, Laminated Transformer
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC 12.6 V CT/6.3 V 6 VA 500 mA/1 A 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 50\60 Hz, Laminated Transformer
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC 120 V CT/60 V 6 VA 50 mA/100 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 50\60 Hz, Laminated Transformer
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC 48 V CT/24 V 6 VA 125 mA/250 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 50\60 Hz, Laminated Transformer
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 100
Mult.: 50

Class 2 Transformers 115 VAC 56 V CT/28 V 6 VA 110 mA/220 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 50\60 Hz, Laminated Transformer
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC 10 V CT/5 V 12 VA 1.2 A/2.4 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 50\60 Hz, Laminated Transformer
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC 120 V CT/60 V 12 VA 100 mA/200 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 50\60 Hz, Laminated Transformer
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Class 2 Transformers 115 VAC 24 V CT/12 V 12 VA 500 mA/1 A Through Hole Single Primary Winding Dual Secondary Winding 48.4 mm 40.4 mm 36.9 mm ST