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Signal ST DST Series Split Tran Transformers Bel Fuse ST 7 28 for Printed Circuit Board Applications

Price Negotiable
Price: Negotiable
MOQ: Negotiable
Delivery Time: Negotiable
Product Description

Product Overview

The Signal ST/DST Series Split/Tran Specialty Purpose & Class 2 Transformers are designed for printed circuit board mounting, offering superior isolation and low capacitive coupling due to their dual cavity platform. Featuring rigid pin construction for enhanced reliability and ease of board insertion, these transformers are suitable for a wide range of power applications from 1.1 VA to 36 VA. They are built with a Class F insulation system (155C) and meet stringent agency certifications including UL and CSA standards, with options for Class 2 designation. Custom versions are available upon request.

Product Attributes

  • Brand: Signal (Bel Fuse)
  • Series: ST / DST Series Split/Tran
  • Construction: Split Bobbin with Dual Cavity
  • Insulation System: Class F (155C)
  • RoHS Compliant: Yes
  • Agency Certifications:
    • UL 1446 Class F insulation systems, File # E66312
    • UL Recognized 506 / UL 5085-1, 2, File # E63829
    • CSA certified to C22.2 #66.1, File # 221070
    • cCSAus certified to C22.2 #66.3 / UL 5085-3, File #221070
    • Class 2 - marked with (*) or (**) or (#)
    • CSA certified as Inherently Limited (*)
    • CSA certified as Non Inherently Limited (**) - see recommended fuse rating table.
    • UL Recognized UL5085-3, Inherently Limited (#) File # E116583

Technical Specifications

Part Number VA Rating Secondary RMS Rating (Series) Secondary RMS Rating (Parallel) Primary Configuration Pin Configuration Dimensions (L x W x H) Weight (lbs/kg) Mounting Hardware (Optional)
ST-2-10**# / DST-2-10**# 1.1 10 VCT @ 0.11 A 5 V @ 0.22 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) 0.17 (0.08) -
ST-3-10*# / DST-3-10*# 2.4 10 VCT @ 0.25 A 5 V @ 0.5 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) 0.25 (0.11) -
ST-4-10*# / DST-4-10*# 6 10 VCT @ 0.6 A 5 V @ 1.2 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) 0.44 (0.20) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-5-10*# / DST-5-10*# 12 10 VCT @ 1.2 A 5 V @ 2.4 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) 0.70 (0.32) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-6-10 / DST-6-10 20 10 VCT @ 2.0 A 5 V @ 4.0 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) 0.80 (0.36) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-7-10 / DST-7-10 36 10 VCT @ 3.6 A 5 V @ 7.2 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) 1.1 (0.50) 4 mounting holes on 2.18 x 1.75 centers for #6 screws
ST-2-12**# / DST-2-12**# 1.1 12.6 VCT @ 0.09 A 6.3 V @ 0.18 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) 0.17 (0.08) -
ST-3-12*# / DST-3-12*# 2.4 12.6 VCT @ 0.2 A 6.3 V @ 0.4 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) 0.25 (0.11) -
ST-4-12*# / DST-4-12*# 6 12.6 VCT @ 0.5 A 6.3 V @ 1.0 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) 0.44 (0.20) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-5-12*# / DST-5-12*# 12 12.6 VCT @ 1.0 A 6.3 V @ 2.0 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) 0.70 (0.32) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-6-12 / DST-6-12 20 12.6 VCT @ 1.6 A 6.3 V @ 3.2 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) 0.80 (0.36) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-7-12 / DST-7-12 36 12.6 VCT @ 2.85 A 6.3 V @ 5.7 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) 1.1 (0.50) 4 mounting holes on 2.18 x 1.75 centers for #6 screws
ST-2-16**# / DST-2-16**# 1.1 16 VCT @ 0.07 A 8 V @ 0.14 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) 0.17 (0.08) -
ST-3-16*# / DST-3-16*# 2.4 16 VCT @ 0.15 A 8 V @ 0.3 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) 0.25 (0.11) -
ST-4-16*# / DST-4-16*# 6 16 VCT @ 0.4 A 8 V @ 0.8 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) 0.44 (0.20) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-5-16*# / DST-5-16*# 12 16 VCT @ 0.8 A 8 V @ 1.6 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) 0.70 (0.32) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-6-16 / DST-6-16 20 16 VCT @ 1.25 A 8 V @ 2.5 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) 0.80 (0.36) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-7-16 / DST-7-16 36 16 VCT @ 2.25 A 8 V @ 4.5 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) 1.1 (0.50) 4 mounting holes on 2.18 x 1.75 centers for #6 screws
ST-2-20**# / DST-2-20**# 1.1 20 VCT @ 0.055 A 10 V @ 0.11 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) 0.17 (0.08) -
ST-3-20*# / DST-3-20*# 2.4 20 VCT @ 0.12 A 10 V @ 0.24 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) 0.25 (0.11) -
ST-4-20*# / DST-4-20*# 6 20 VCT @ 0.3 A 10 V @ 0.6 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) 0.44 (0.20) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-5-20*# / DST-5-20*# 12 20 VCT @ 0.6 A 10 V @ 1.2 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) 0.70 (0.32) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-6-20 / DST-6-20 20 20 VCT @ 1.0 A 10 V @ 2.0 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) 0.80 (0.36) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-7-20 / DST-7-20 36 20 VCT @ 1.8 A 10 V @ 3.6 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) 1.1 (0.50) 4 mounting holes on 2.18 x 1.75 centers for #6 screws
ST-2-24**# / DST-2-24**# 1.1 24 VCT @ 0.045 A 12 V @ 0.09 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) 0.17 (0.08) -
ST-3-24*# / DST-3-24*# 2.4 24 VCT @ 0.1 A 12 V @ 0.2 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) 0.25 (0.11) -
ST-4-24*# / DST-4-24*# 6 24 VCT @ 0.25 A 12 V @ 0.5 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) 0.44 (0.20) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-5-24*# / DST-5-24*# 12 24 VCT @ 0.5 A 12 V @ 1.0 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) 0.70 (0.32) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-6-24 / DST-6-24 20 24 VCT @ 0.8 A 12 V @ 1.6 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) 0.80 (0.36) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-7-24 / DST-7-24 36 24 VCT @ 1.5 A 12 V @ 3.0 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) 1.1 (0.50) 4 mounting holes on 2.18 x 1.75 centers for #6 screws
ST-2-28 / DST-2-28 1.1 28 VCT @ 0.04 A 14 V @ 0.08 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) 0.17 (0.08) -
ST-3-28 / DST-3-28 2.4 28 VCT @ 0.085 A 14 V @ 0.17 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) 0.25 (0.11) -
ST-4-28 / DST-4-28 6 28 VCT @ 0.2 A 14 V @ 0.4 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) 0.44 (0.20) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-5-28 / DST-5-28 12 28 VCT @ 0.42 A 14 V @ 0.84 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) 0.70 (0.32) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-6-28 / DST-6-28 20 28 VCT @ 0.7 A 14 V @ 1.4 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) 0.80 (0.36) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-7-28 / DST-7-28 36 28 VCT @ 1.3 A 14 V @ 2.6 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) 1.1 (0.50) 4 mounting holes on 2.18 x 1.75 centers for #6 screws
ST-2-36 / DST-2-36 1.1 36 VCT @ 0.03 A 18 V @ 0.06 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) 0.17 (0.08) -
ST-3-36 / DST-3-36 2.4 36 VCT @ 0.065 A 18 V @ 0.13 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) 0.25 (0.11) -
ST-4-36 / DST-4-36 6 36 VCT @ 0.17 A 18 V @ 0.34 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) 0.44 (0.20) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-5-36 / DST-5-36 12 36 VCT @ 0.35 A 18 V @ 0.7 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) 0.70 (0.32) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-6-36 / DST-6-36 20 36 VCT @ 0.55 A 18 V @ 1.1 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) 0.80 (0.36) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-7-36 / DST-7-36 36 36 VCT @ 1.0 A 18 V @ 2.0 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) 1.1 (0.50) 4 mounting holes on 2.18 x 1.75 centers for #6 screws
ST-2-48 / DST-2-48 1.1 48 VCT @ 0.023 A 24 V @ 0.046 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) 0.17 (0.08) -
ST-3-48 / DST-3-48 2.4 48 VCT @ 0.05 A 24 V @ 0.1 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) 0.25 (0.11) -
ST-4-48 / DST-4-48 6 48 VCT @ 0.125 A 24 V @ 0.25 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) 0.44 (0.20) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-5-48 / DST-5-48 12 48 VCT @ 0.25 A 24 V @ 0.5 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) 0.70 (0.32) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-6-48 / DST-6-48 20 48 VCT @ 0.4 A 24 V @ 0.8 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) 0.80 (0.36) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-7-48 / DST-7-48 36 48 VCT @ 0.75 A 24 V @ 1.5 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) 1.1 (0.50) 4 mounting holes on 2.18 x 1.75 centers for #6 screws
ST-2-56 / DST-2-56 1.1 56 VCT @ 0.02 A 28 V @ 0.04 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) 0.17 (0.08) -
ST-3-56 / DST-3-56 2.4 56 VCT @ 0.045 A 28 V @ 0.09 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) 0.25 (0.11) -
ST-4-56 / DST-4-56 6 56 VCT @ 0.11 A 28 V @ 0.22 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) 0.44 (0.20) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-5-56 / DST-5-56 12 56 VCT @ 0.22 A 28 V @ 0.44 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) 0.70 (0.32) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-6-56 / DST-6-56 20 56 VCT @ 0.35 A 28 V @ 0.7 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) 0.80 (0.36) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-7-56 / DST-7-56 36 56 VCT @ 0.65 A 28 V @ 1.3 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) 1.1 (0.50) 4 mounting holes on 2.18 x 1.75 centers for #6 screws
ST-2-120 / DST-2-120 1.1 120 VCT @ 0.01 A 60 V @ 0.02 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) 0.17 (0.08) -
ST-3-120 / DST-3-120 2.4 120 VCT @ 0.02 A 60 V @ 0.04 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) 0.25 (0.11) -
ST-4-120 / DST-4-120 6 120 VCT @ 0.05 A 60 V @ 0.1 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) 0.44 (0.20) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-5-120 / DST-5-120 12 120 VCT @ 0.1 A 60 V @ 0.2 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) 0.70 (0.32) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-6-120 / DST-6-120 20 120 VCT @ 0.16 A 60 V @ 0.32 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) 0.80 (0.36) Nylon 4-40 x 1.37 (4-40 x 34.9)
ST-7-120 / DST-7-120 36 120 VCT @ 0.3 A 60 V @ 0.6 A Single 115 V / Dual 115/230 V 6 Pin / 8 Pin 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) 1.1 (0.50) 4 mounting holes on 2.18 x 1.75 centers for #6 screws
General Specifications:
Power: 1.1 VA to 36 VA
Dielectric Strength: 2500 Vrms Hipot
Primaries: Single or dual primaries, 115 V or 115/230 V, 50/60 Hz
Secondaries: Series or parallel
Electrostatic Shield: Not necessary, split bobbin construction
Insulation System: Class F, 155 C
Recommended Secondary Fuse Values: (1) 0.125 A, (2) 0.15 A, (3) 0.25 A, (4) 0.3 A, (5) 0.375 A, (6) 0.4 A, (7) 0.5 A, (8) 0.6 A, (9) 0.75 A, (10) 1.0 A, (11) 1.5 A, (12) 2.0 A, (13) 3.0 A

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Company Changsha Purple Horn E-Commerce Co., Ltd.
Location 2332 Kaibin Commercial Plaza, No. 419 Shaoshan Middle Road, Shazitang Street, Yuhua District, Changsha City, Hunan Province
Contact Person Sellina

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