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 50\60 Hz, Laminated Transformer
Datasheet
38In Stock
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 50\60 Hz, Laminated Transformer
Datasheet
18In Stock
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 50\60 Hz, Laminated Transformer
Datasheet
16In Stock
100Expected 09/04/2026
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 50\60 Hz, Laminated Transformer
Datasheet
99In Stock
100Expected 09/04/2026
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 50\60 Hz, Laminated Transformer
Datasheet
48In 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 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 50\60 Hz, Laminated Transformer
Datasheet
31In 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 50\60 Hz, Laminated Transformer
Datasheet
23In 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 50\60 Hz, Laminated Transformer
Datasheet
6In 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 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 50\60 Hz, Laminated Transformer
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 50\60 Hz, Laminated Transformer
Datasheet
21In 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 50\60 Hz, Laminated Transformer
Datasheet
21In 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 50\60 Hz, Laminated Transformer
Datasheet
193Expected 01/04/2026
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 50\60 Hz, Laminated Transformer
Datasheet
100Expected 21/04/2026
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 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 50\60 Hz, Laminated Transformer
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 200
Mult.: 100

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 50\60 Hz, Laminated Transformer
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 200
Mult.: 100

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 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 50\60 Hz, Laminated Transformer
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 500
Mult.: 100

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 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 50\60 Hz, Laminated Transformer
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 100
Mult.: 50

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 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 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 50\60 Hz, Laminated Transformer
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 50
Mult.: 25

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