power transformer Bel Fuse DST-6-120 with dual cavity platform and UL recognized insulation system

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Product Description

Product Overview

The Signal ST/DST Series Split/Tran specialty purpose and Class 2 transformers are designed with a split bobbin, dual cavity platform to provide superior isolation and low capacitive coupling. These transformers feature rigid pin construction for easier board insertion and enhanced reliability. They are suitable for a wide range of applications requiring reliable power conversion with high isolation, including Class 2 applications.

Product Attributes

Brand: Signal Transformer (Bel Fuse)
Series: ST / DST Series Split/Tran
Construction: Split Bobbin, Dual Cavity
Pin Construction: Rigid
Insulation System: Class F, 155 C
Agency Certifications: UL 1446 Class F, UL Recognized 506 / UL 5085-1, 2, CSA certified to C22.2 #66.1, cCSAus certified to C22.2 #66.3 / UL 5085-3, UL Recognized UL5085-3 (Inherently Limited)
Compliance: RoHS Compliant
Customization: Custom versions available upon request.

Technical Specifications

Model Type	Power (VA)	Dielectric Strength (Vrms Hipot)	Primary Options	Secondary Options	Insulation System	Mounting Hardware	Weight (lbs / kg)	Dimensions (L x W x H)
ST / DST Series	1.1 to 36	2500	Single or dual primaries, 115 V or 115/230 V, 50/60 Hz	Series or parallel	Class F, 155 C	See chart / Accessories datasheet	0.17 (0.08) to 1.1 (0.50)	Varies by VA rating (see chart)

Part Number Selection & Ratings

Part Number (Example)	Secondary RMS Rating (Series)	Secondary RMS Rating (Parallel)	Primary Type	Pins	Class 2 Marking
ST-2-10**#	10 VCT @ 0.11 A	5 V @ 0.22 A	Single 115 V	6	**#
DST-2-10**#	10 VCT @ 0.11 A	5 V @ 0.22 A	Dual 115/230 V	8	**#
ST-3-10*#	10 VCT @ 0.25 A	5 V @ 0.5 A	Single 115 V	6	*#
DST-3-10*#	10 VCT @ 0.25 A	5 V @ 0.5 A	Dual 115/230 V	8	*#
ST-7-36 DST-7-36	36 VCT @ 1.0 A	18 V @ 2.0 A	N/A	N/A	N/A
ST-6-120 DST-6-120	120 VCT @ 0.16 A	60 V @ 0.32 A	N/A	N/A	N/A
ST-7-120 DST-7-120	120 VCT @ 0.3 A	60 V @ 0.6 A	N/A	N/A	N/A
* CSA certified as Inherently Limited ** CSA certified as Non Inherently Limited # UL Recognized UL5085-3, Inherently Limited

Recommended Secondary Fuse Values

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)	(11)	(12)	(13)
0.125 A	0.15 A	0.25 A	0.3 A	0.375 A	0.4 A	0.5 A	0.6 A	0.75 A	1.0 A	1.5 A	2.0 A	3.0 A

Mechanical Specifications

Size (VA)	L (inches/mm)	W (inches/mm)	H (inches/mm)	ML (inches/mm)	A (inches/mm)	B (inches/mm)	C (inches/mm)	Optional Mounting Screw & Nut	Weight (lbs/kg)
1.1	1.37 (34.9)	1.12 (28.6)	0.97 (24.6)	-	0.25 (6.4)	0.25 (6.4)	1.20 (30.5)	-	0.17 (0.08)
2.4	1.37 (34.9)	1.12 (28.6)	1.21 (30.8)	-	0.25 (6.4)	0.25 (6.4)	1.20 (30.5)	-	0.25 (0.11)
6	1.62 (41.3)	1.31 (33.3)	1.31 (33.3)	1.06 (26.9)	0.25 (6.4)	0.35 (8.9)	1.25 (31.8)	Nylon 4-40 x 1.37 (4-40 x 34.9)	0.44 (0.20)
12	1.91 (48.4)	1.59 (40.4)	1.45 (36.9)	1.25 (31.8)	0.30 (7.6)	0.40 (10.2)	1.41 (35.8)	Nylon 4-40 x 1.37 (4-40 x 34.9)	0.70 (0.32)
20	2.25 (57.2)	1.88 (47.8)	1.45 (36.9)	1.50 (38.1)	0.30 (7.6)	0.40 (10.2)	1.60 (40.6)	Nylon 4-40 x 1.37 (4-40 x 34.9)	0.80 (0.36)
36	2.62 (66.7)	2.18 (55.5)	1.59 (40.4)	(See notes)	0.40 (10.2)	0.40 (10.2)	1.85 (47.0)	(See notes)	1.1 (0.50)
Notes: - Size 7 has 4 mounting holes on 2.18 x 1.75 centers for #6 screws. - Mounting hardware ST-MS (screw) and ST-MN (nut) available from Signal.