Changsha Purple Horn E-Commerce Co., Ltd.
                                                                                                           
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Bel Fuse ST-4-36 Signal Transformer split bobbin dual cavity transformer engineered for PCB insertion

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

Product Overview

The Signal ST and DST Series Split/Tran Specialty Purpose & Class 2 Transformers are designed for printed circuit board mounting. These transformers feature a split bobbin construction with dual cavities, offering superior isolation and low capacitive coupling. They are engineered with rigid pin construction for enhanced board insertion reliability. Suitable for a wide range of power applications from 1.1 VA to 36 VA, these transformers meet stringent agency certifications including UL and CSA standards, ensuring safety and performance in various industrial and electronic systems.

Product Attributes

  • Brand: Signal Transformer
  • Series: ST / DST Series (Split/Tran)
  • Construction: Split Bobbin with Dual Cavity
  • Insulation System: Class F, 155 C
  • 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
  • Custom Versions: Available upon request

Technical Specifications

Part Number Secondary RMS Rating Power (VA) Primary Type Secondary Pins Weight (lbs/kg)
ST-2-10**# 10 VCT @ 0.11 A / 5 V @ 0.22 A - Single 115 V 6 Pin -
DST-2-10**# 10 VCT @ 0.11 A / 5 V @ 0.22 A - Dual 115/230 V 8 Pin -
ST-3-10*# 10 VCT @ 0.25 A (5) / 5 V @ 0.5 A (9) - Single 115 V 6 Pin -
DST-3-10*# 10 VCT @ 0.25 A (5) / 5 V @ 0.5 A (9) - Dual 115/230 V 8 Pin -
ST-4-10*# 10 VCT @ 0.6 A (9) / 5 V @ 1.2 A (11) - Single 115 V 6 Pin 0.44 (0.20)
DST-4-10*# 10 VCT @ 0.6 A (9) / 5 V @ 1.2 A (11) 6 Dual 115/230 V 8 Pin 0.44 (0.20)
ST-5-10*# 10 VCT @ 1.2 A (11) / 5 V @ 2.4 A (13) 12 Single 115 V 6 Pin 0.70 (0.32)
DST-5-10*# 10 VCT @ 1.2 A (11) / 5 V @ 2.4 A (13) 12 Dual 115/230 V 8 Pin 0.70 (0.32)
ST-6-10 10 VCT @ 2.0 A / 5 V @ 4.0 A 20 Single 115 V 6 Pin 0.80 (0.36)
DST-6-10 10 VCT @ 2.0 A / 5 V @ 4.0 A 20 Dual 115/230 V 8 Pin 0.80 (0.36)
ST-7-10 10 VCT @ 3.6 A / 5 V @ 7.2 A 36 Single 115 V 6 Pin 1.1 (0.50)
DST-7-10 10 VCT @ 3.6 A / 5 V @ 7.2 A 36 Dual 115/230 V 8 Pin 1.1 (0.50)
ST-2-12**# 12.6 VCT @ 0.09 A / 6.3 V @ 0.18 A - Single 115 V 6 Pin -
DST-2-12**# 12.6 VCT @ 0.09 A / 6.3 V @ 0.18 A - Dual 115/230 V 8 Pin -
ST-3-12*# 12.6 VCT @ 0.2 A (4) / 6.3 V @ 0.4 A (8) - Single 115 V 6 Pin -
DST-3-12*# 12.6 VCT @ 0.2 A (4) / 6.3 V @ 0.4 A (8) - Dual 115/230 V 8 Pin -
ST-4-12*# 12.6 VCT @ 0.5 A (9) / 6.3 V @ 1.0 A (11) 6 Single 115 V 6 Pin 0.44 (0.20)
DST-4-12*# 12.6 VCT @ 0.5 A (9) / 6.3 V @ 1.0 A (11) 6 Dual 115/230 V 8 Pin 0.44 (0.20)
ST-5-12*# 12.6 VCT @ 1.0 A (11) / 6.3 V @ 2.0 A (13) 12 Single 115 V 6 Pin 0.70 (0.32)
DST-5-12*# 12.6 VCT @ 1.0 A (11) / 6.3 V @ 2.0 A (13) 12 Dual 115/230 V 8 Pin 0.70 (0.32)
ST-6-12 12.6 VCT @ 1.6 A / 6.3 V @ 3.2 A 20 Single 115 V 6 Pin 0.80 (0.36)
DST-6-12 12.6 VCT @ 1.6 A / 6.3 V @ 3.2 A 20 Dual 115/230 V 8 Pin 0.80 (0.36)
ST-7-12 12.6 VCT @ 2.85 A / 6.3 V @ 5.7 A 36 Single 115 V 6 Pin 1.1 (0.50)
DST-7-12 12.6 VCT @ 2.85 A / 6.3 V @ 5.7 A 36 Dual 115/230 V 8 Pin 1.1 (0.50)
ST-2-16**# 16 VCT @ 0.07 A / 8 V @ 0.14 A - Single 115 V 6 Pin -
DST-2-16**# 16 VCT @ 0.07 A / 8 V @ 0.14 A - Dual 115/230 V 8 Pin -
ST-3-16*# 16 VCT @ 0.15 A (3) / 8 V @ 0.3 A (6) - Single 115 V 6 Pin -
DST-3-16*# 16 VCT @ 0.15 A (3) / 8 V @ 0.3 A (6) - Dual 115/230 V 8 Pin -
ST-4-16*# 16 VCT @ 0.4 A (7) / 8 V @ 0.8 A (10) 6 Single 115 V 6 Pin 0.44 (0.20)
DST-4-16*# 16 VCT @ 0.4 A (7) / 8 V @ 0.8 A (10) 6 Dual 115/230 V 8 Pin 0.44 (0.20)
ST-5-16*# 16 VCT @ 0.8 A (10) / 8 V @ 1.6 A (12) 12 Single 115 V 6 Pin 0.70 (0.32)
DST-5-16*# 16 VCT @ 0.8 A (10) / 8 V @ 1.6 A (12) 12 Dual 115/230 V 8 Pin 0.70 (0.32)
ST-6-16 16 VCT @ 1.25 A / 8 V @ 2.5 A 20 Single 115 V 6 Pin 0.80 (0.36)
DST-6-16 16 VCT @ 1.25 A / 8 V @ 2.5 A 20 Dual 115/230 V 8 Pin 0.80 (0.36)
ST-7-16 16 VCT @ 2.25 A / 8 V @ 4.5 A 36 Single 115 V 6 Pin 1.1 (0.50)
DST-7-16 16 VCT @ 2.25 A / 8 V @ 4.5 A 36 Dual 115/230 V 8 Pin 1.1 (0.50)
ST-2-20**# 20 VCT @ 0.055 A / 10 V @ 0.11 A - Single 115 V 6 Pin -
DST-2-20**# 20 VCT @ 0.055 A / 10 V @ 0.11 A - Dual 115/230 V 8 Pin -
ST-3-20*# 20 VCT @ 0.12 A (2) / 10 V @ 0.24 A (5) - Single 115 V 6 Pin -
DST-3-20*# 20 VCT @ 0.12 A (2) / 10 V @ 0.24 A (5) - Dual 115/230 V 8 Pin -
ST-4-20*# 20 VCT @ 0.3 A (6) / 10 V @ 0.6 A (9) 6 Single 115 V 6 Pin 0.44 (0.20)
DST-4-20*# 20 VCT @ 0.3 A (6) / 10 V @ 0.6 A (9) 6 Dual 115/230 V 8 Pin 0.44 (0.20)
ST-5-20*# 20 VCT @ 0.6 A (9) / 10 V @ 1.2 A (11) 12 Single 115 V 6 Pin 0.70 (0.32)
DST-5-20*# 20 VCT @ 0.6 A (9) / 10 V @ 1.2 A (11) 12 Dual 115/230 V 8 Pin 0.70 (0.32)
ST-6-20 20 VCT @ 1.0 A / 10 V @ 2.0 A 20 Single 115 V 6 Pin 0.80 (0.36)
DST-6-20 20 VCT @ 1.0 A / 10 V @ 2.0 A 20 Dual 115/230 V 8 Pin 0.80 (0.36)
ST-7-20 20 VCT @ 1.8 A / 10 V @ 3.6 A 36 Single 115 V 6 Pin 1.1 (0.50)
DST-7-20 20 VCT @ 1.8 A / 10 V @ 3.6 A 36 Dual 115/230 V 8 Pin 1.1 (0.50)
ST-2-24**# 24 VCT @ 0.045 A / 12 V @ 0.09 A - Single 115 V 6 Pin -
DST-2-24**# 24 VCT @ 0.045 A / 12 V @ 0.09 A - Dual 115/230 V 8 Pin -
ST-3-24*# 24 VCT @ 0.1 A (1) / 12 V @ 0.2 A (4) - Single 115 V 6 Pin -
DST-3-24*# 24 VCT @ 0.1 A (1) / 12 V @ 0.2 A (4) - Dual 115/230 V 8 Pin -
ST-4-24*# 24 VCT @ 0.25 A (5) / 12 V @ 0.5 A (9) 6 Single 115 V 6 Pin 0.44 (0.20)
DST-4-24*# 24 VCT @ 0.25 A (5) / 12 V @ 0.5 A (9) 6 Dual 115/230 V 8 Pin 0.44 (0.20)
ST-5-24*# 24 VCT @ 0.5 A (9) / 12 V @ 1.0 A (11) 12 Single 115 V 6 Pin 0.70 (0.32)
DST-5-24*# 24 VCT @ 0.5 A (9) / 12 V @ 1.0 A (11) 12 Dual 115/230 V 8 Pin 0.70 (0.32)
ST-6-24 24 VCT @ 0.8 A / 12 V @ 1.6 A 20 Single 115 V 6 Pin 0.80 (0.36)
DST-6-24 24 VCT @ 0.8 A / 12 V @ 1.6 A 20 Dual 115/230 V 8 Pin 0.80 (0.36)
ST-7-24 24 VCT @ 1.5 A / 12 V @ 3.0 A 36 Single 115 V 6 Pin 1.1 (0.50)
DST-7-24 24 VCT @ 1.5 A / 12 V @ 3.0 A 36 Dual 115/230 V 8 Pin 1.1 (0.50)
ST-2-28 28 VCT @ 0.04 A / 14 V @ 0.08 A - Single 115 V 6 Pin -
DST-2-28 28 VCT @ 0.04 A / 14 V @ 0.08 A - Dual 115/230 V 8 Pin -
ST-3-28 28 VCT @ 0.085 A / 14 V @ 0.17 A - Single 115 V 6 Pin -
DST-3-28 28 VCT @ 0.085 A / 14 V @ 0.17 A - Dual 115/230 V 8 Pin -
ST-4-28 28 VCT @ 0.2 A / 14 V @ 0.4 A 6 Single 115 V 6 Pin 0.44 (0.20)
DST-4-28 28 VCT @ 0.2 A / 14 V @ 0.4 A 6 Dual 115/230 V 8 Pin 0.44 (0.20)
ST-5-28 28 VCT @ 0.42 A / 14 V @ 0.84 A 12 Single 115 V 6 Pin 0.70 (0.32)
DST-5-28 28 VCT @ 0.42 A / 14 V @ 0.84 A 12 Dual 115/230 V 8 Pin 0.70 (0.32)
ST-6-28 28 VCT @ 0.7 A / 14 V @ 1.4 A 20 Single 115 V 6 Pin 0.80 (0.36)
DST-6-28 28 VCT @ 0.7 A / 14 V @ 1.4 A 20 Dual 115/230 V 8 Pin 0.80 (0.36)
ST-7-28 28 VCT @ 1.3 A / 14 V @ 2.6 A 36 Single 115 V 6 Pin 1.1 (0.50)
DST-7-28 28 VCT @ 1.3 A / 14 V @ 2.6 A 36 Dual 115/230 V 8 Pin 1.1 (0.50)
ST-2-36 36 VCT @ 0.03 A / 18 V @ 0.06 A - Single 115 V 6 Pin -
DST-2-36 36 VCT @ 0.03 A / 18 V @ 0.06 A - Dual 115/230 V 8 Pin -
ST-3-36 36 VCT @ 0.065 A / 18 V @ 0.13 A - Single 115 V 6 Pin -
DST-3-36 36 VCT @ 0.065 A / 18 V @ 0.13 A - Dual 115/230 V 8 Pin -
ST-4-36 36 VCT @ 0.17 A / 18 V @ 0.34 A 6 Single 115 V 6 Pin 0.44 (0.20)
DST-4-36 36 VCT @ 0.17 A / 18 V @ 0.34 A 6 Dual 115/230 V 8 Pin 0.44 (0.20)
ST-5-36 36 VCT @ 0.35 A / 18 V @ 0.7 A 12 Single 115 V 6 Pin 0.70 (0.32)
DST-5-36 36 VCT @ 0.35 A / 18 V @ 0.7 A 12 Dual 115/230 V 8 Pin 0.70 (0.32)
ST-6-36 36 VCT @ 0.55 A / 18 V @ 1.1 A 20 Single 115 V 6 Pin 0.80 (0.36)
DST-6-36 36 VCT @ 0.55 A / 18 V @ 1.1 A 20 Dual 115/230 V 8 Pin 0.80 (0.36)
ST-7-36 36 VCT @ 1.0 A / 18 V @ 2.0 A 36 Single 115 V 6 Pin 1.1 (0.50)
DST-7-36 36 VCT @ 1.0 A / 18 V @ 2.0 A 36 Dual 115/230 V 8 Pin 1.1 (0.50)
ST-2-48 48 VCT @ 0.023 A / 24 V @ 0.046 A - Single 115 V 6 Pin -
DST-2-48 48 VCT @ 0.023 A / 24 V @ 0.046 A - Dual 115/230 V 8 Pin -
ST-3-48 48 VCT @ 0.05 A / 24 V @ 0.1 A - Single 115 V 6 Pin -
DST-3-48 48 VCT @ 0.05 A / 24 V @ 0.1 A - Dual 115/230 V 8 Pin -
ST-4-48 48 VCT @ 0.125 A / 24 V @ 0.25 A 6 Single 115 V 6 Pin 0.44 (0.20)
DST-4-48 48 VCT @ 0.125 A / 24 V @ 0.25 A 6 Dual 115/230 V 8 Pin 0.44 (0.20)
ST-5-48 48 VCT @ 0.25 A / 24 V @ 0.5 A 12 Single 115 V 6 Pin 0.70 (0.32)
DST-5-48 48 VCT @ 0.25 A / 24 V @ 0.5 A 12 Dual 115/230 V 8 Pin 0.70 (0.32)
ST-6-48 48 VCT @ 0.4 A / 24 V @ 0.8 A 20 Single 115 V 6 Pin 0.80 (0.36)
DST-6-48 48 VCT @ 0.4 A / 24 V @ 0.8 A 20 Dual 115/230 V 8 Pin 0.80 (0.36)
ST-7-48 48 VCT @ 0.75 A / 24 V @ 1.5 A 36 Single 115 V 6 Pin 1.1 (0.50)
DST-7-48 48 VCT @ 0.75 A / 24 V @ 1.5 A 36 Dual 115/230 V 8 Pin 1.1 (0.50)
ST-2-56 56 VCT @ 0.02 A / 28 V @ 0.04 A - Single 115 V 6 Pin -
DST-2-56 56 VCT @ 0.02 A / 28 V @ 0.04 A - Dual 115/230 V 8 Pin -
ST-3-56 56 VCT @ 0.045 A / 28 V @ 0.09 A - Single 115 V 6 Pin -
DST-3-56 56 VCT @ 0.045 A / 28 V @ 0.09 A - Dual 115/230 V 8 Pin -
ST-4-56 56 VCT @ 0.11 A / 28 V @ 0.22 A 6 Single 115 V 6 Pin 0.44 (0.20)
DST-4-56 56 VCT @ 0.11 A / 28 V @ 0.22 A 6 Dual 115/230 V 8 Pin 0.44 (0.20)
ST-5-56 56 VCT @ 0.22 A / 28 V @ 0.44 A 12 Single 115 V 6 Pin 0.70 (0.32)
DST-5-56 56 VCT @ 0.22 A / 28 V @ 0.44 A 12 Dual 115/230 V 8 Pin 0.70 (0.32)
ST-6-56 56 VCT @ 0.35 A / 28 V @ 0.7 A 20 Single 115 V 6 Pin 0.80 (0.36)
DST-6-56 56 VCT @ 0.35 A / 28 V @ 0.7 A 20 Dual 115/230 V 8 Pin 0.80 (0.36)
ST-7-56 56 VCT @ 0.65A / 28 V @ 1.3 A 36 Single 115 V 6 Pin 1.1 (0.50)
DST-7-56 56 VCT @ 0.65A / 28 V @ 1.3 A 36 Dual 115/230 V 8 Pin 1.1 (0.50)
ST-2-120 120 VCT @ 0.01 A / 60 V @ 0.02 A - Single 115 V 6 Pin -
DST-2-120 120 VCT @ 0.01 A / 60 V @ 0.02 A - Dual 115/230 V 8 Pin -
ST-3-120 120 VCT @ 0.02 A / 60 V @ 0.04 A - Single 115 V 6 Pin -
DST-3-120 120 VCT @ 0.02 A / 60 V @ 0.04 A - Dual 115/230 V 8 Pin -
ST-4-120 120 VCT @ 0.05 A / 60 V @ 0.1 A 6 Single 115 V 6 Pin 0.44 (0.20)
DST-4-120 120 VCT @ 0.05 A / 60 V @ 0.1 A 6 Dual 115/230 V 8 Pin 0.44 (0.20)
ST-5-120 120 VCT @ 0.1 A / 60 V @ 0.2 A 12 Single 115 V 6 Pin 0.70 (0.32)
DST-5-120 120 VCT @ 0.1 A / 60 V @ 0.2 A 12 Dual 115/230 V 8 Pin 0.70 (0.32)
ST-6-120 120 VCT @ 0.16 A / 60 V @ 0.32 A 20 Single 115 V 6 Pin 0.80 (0.36)
DST-6-120 120 VCT @ 0.16 A / 60 V @ 0.32 A 20 Dual 115/230 V 8 Pin 0.80 (0.36)
ST-7-120 120 VCT @ 0.3 A / 60 V @ 0.6 A 36 Single 115 V 6 Pin 1.1 (0.50)
DST-7-120 120 VCT @ 0.3 A / 60 V @ 0.6 A 36 Dual 115/230 V 8 Pin 1.1 (0.50)
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
Mounting Hardware See chart (ST-MS screw, ST-MN nut available from Signal)
Size 7 Mounting 4 mounting holes on 2.18 x 1.75 centers for #6 screws.
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
Mechanical Specifications (Size, L, W, H, ML, A, B, C, Weight) See detailed chart in original document.

Note: Specifications subject to change without notice.


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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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