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Class 2 transformer Bel Fuse ST-5-36 featuring dual cavity platform and easy board insertion design

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

Bel Fuse Signal ST/DST Series Split/Tran Specialty Purpose & Class 2 Transformers

Product Overview
The Bel Fuse Signal ST and DST Series Split/Tran transformers are specialty purpose and Class 2 transformers designed for printed circuit board mounting. They utilize a dual cavity platform that provides superior isolation and low capacitive coupling. The rigid pin construction ensures easier board insertion and higher reliability. These transformers are suitable for a wide range of applications requiring reliable power conversion with enhanced isolation.

Product Attributes

  • Brand: Bel Fuse Signal
  • Series: ST / DST Split/Tran
  • Construction: Split Bobbin with dual cavity
  • Insulation System: Class F, 155 C
  • 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 (#)
    • CSA certified as Inherently Limited (*)
    • CSA certified as Non Inherently Limited (-)
    • UL Recognized UL5085-3, Inherently Limited (#) File # E116583
  • Compliance: RoHS Compliant
  • Customization: Custom versions available upon request.

Technical Specifications

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

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

Note: Mounting hardware (screws and nuts) available from Signal, part numbers ST-MS (screw) and ST-MN (nut). Specifications are 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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