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Dual cavity split bobbin transformer Bel Fuse DST-2-12 with Class F insulation and UL certification

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

Product Overview

The Belfuse ST/DST Series Split/Tran Specialty Purpose & Class 2 Transformers are designed for signal applications, utilizing a split bobbin construction with dual cavities to provide superior isolation and low capacitive coupling. These transformers feature rigid pin construction for enhanced board insertion reliability. They are suitable for a wide range of power requirements from 1.1 VA to 36 VA and offer single or dual primary configurations with various secondary voltage and current ratings. The series is UL and CSA certified, with Class 2 options available.

Product Attributes

  • Brand: Belfuse (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 (**)
    • UL Recognized UL5085-3, Inherently Limited (#) File # E116583
  • Custom Versions: Available upon request

Technical Specifications

Part Number Secondary RMS Rating VA Rating Size (L x W x H) Weight (lbs/kg) Mounting Type Mounting Screw & Nut (Optional)
ST-2-10**# / DST-2-10**# 10 VCT @ 0.11 A / 5 V @ 0.22 A 1.1 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) 0.17 (0.08) 6 Pin (ST) / 8 Pin (DST) -
ST-3-10*# / DST-3-10*# 10 VCT @ 0.25 A / 5 V @ 0.5 A 2.4 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) 0.25 (0.11) 6 Pin (ST) / 8 Pin (DST) -
ST-4-10*# / DST-4-10*# 10 VCT @ 0.6 A / 5 V @ 1.2 A 6 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) 0.44 (0.20) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-5-10*# / DST-5-10*# 10 VCT @ 1.2 A / 5 V @ 2.4 A 12 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) 0.70 (0.32) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-6-10 / DST-6-10 10 VCT @ 2.0 A / 5 V @ 4.0 A 20 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) 0.80 (0.36) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-7-10 / DST-7-10 10 VCT @ 3.6 A / 5 V @ 7.2 A 36 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) 1.1 (0.50) 6 Pin (ST) / 8 Pin (DST) Available ST-MS (screw) and ST-MN (nut). Size 7 has 4 mounting holes on 2.18 x 1.75 centers for #6 screws.
ST-2-12**# / DST-2-12**# 12.6 VCT @ 0.09 A / 6.3 V @ 0.18 A 1.1 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) 0.17 (0.08) 6 Pin (ST) / 8 Pin (DST) -
ST-3-12*# / DST-3-12*# 12.6 VCT @ 0.2 A / 6.3 V @ 0.4 A 2.4 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) 0.25 (0.11) 6 Pin (ST) / 8 Pin (DST) -
ST-4-12*# / DST-4-12*# 12.6 VCT @ 0.5 A / 6.3 V @ 1.0 A 6 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) 0.44 (0.20) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-5-12*# / DST-5-12*# 12.6 VCT @ 1.0 A / 6.3 V @ 2.0 A 12 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) 0.70 (0.32) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-6-12 / DST-6-12 12.6 VCT @ 1.6 A / 6.3 V @ 3.2 A 20 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) 0.80 (0.36) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-7-12 / DST-7-12 12.6 VCT @ 2.85 A / 6.3 V @ 5.7 A 36 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) 1.1 (0.50) 6 Pin (ST) / 8 Pin (DST) Available ST-MS (screw) and ST-MN (nut). Size 7 has 4 mounting holes on 2.18 x 1.75 centers for #6 screws.
ST-2-16**# / DST-2-16**# 16 VCT @ 0.07 A / 8 V @ 0.14 A 1.1 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) 0.17 (0.08) 6 Pin (ST) / 8 Pin (DST) -
ST-3-16*# / DST-3-16*# 16 VCT @ 0.15 A / 8 V @ 0.3 A 2.4 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) 0.25 (0.11) 6 Pin (ST) / 8 Pin (DST) -
ST-4-16*# / DST-4-16*# 16 VCT @ 0.4 A / 8 V @ 0.8 A 6 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) 0.44 (0.20) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-5-16*# / DST-5-16*# 16 VCT @ 0.8 A / 8 V @ 1.6 A 12 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) 0.70 (0.32) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-6-16 / DST-6-16 16 VCT @ 1.25 A / 8 V @ 2.5 A 20 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) 0.80 (0.36) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-7-16 / DST-7-16 16 VCT @ 2.25 A / 8 V @ 4.5 A 36 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) 1.1 (0.50) 6 Pin (ST) / 8 Pin (DST) Available ST-MS (screw) and ST-MN (nut). Size 7 has 4 mounting holes on 2.18 x 1.75 centers for #6 screws.
ST-2-20**# / DST-2-20**# 20 VCT @ 0.055 A / 10 V @ 0.11 A 1.1 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) 0.17 (0.08) 6 Pin (ST) / 8 Pin (DST) -
ST-3-20*# / DST-3-20*# 20 VCT @ 0.12 A / 10 V @ 0.24 A 2.4 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) 0.25 (0.11) 6 Pin (ST) / 8 Pin (DST) -
ST-4-20*# / DST-4-20*# 20 VCT @ 0.3 A / 10 V @ 0.6 A 6 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) 0.44 (0.20) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-5-20*# / DST-5-20*# 20 VCT @ 0.6 A / 10 V @ 1.2 A 12 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) 0.70 (0.32) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-6-20 / DST-6-20 20 VCT @ 1.0 A / 10 V @ 2.0 A 20 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) 0.80 (0.36) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-7-20 / DST-7-20 20 VCT @ 1.8 A / 10 V @ 3.6 A 36 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) 1.1 (0.50) 6 Pin (ST) / 8 Pin (DST) Available ST-MS (screw) and ST-MN (nut). Size 7 has 4 mounting holes on 2.18 x 1.75 centers for #6 screws.
ST-2-24**# / DST-2-24**# 24 VCT @ 0.045 A / 12 V @ 0.09 A 1.1 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) 0.17 (0.08) 6 Pin (ST) / 8 Pin (DST) -
ST-3-24*# / DST-3-24*# 24 VCT @ 0.1 A / 12 V @ 0.2 A 2.4 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) 0.25 (0.11) 6 Pin (ST) / 8 Pin (DST) -
ST-4-24*# / DST-4-24*# 24 VCT @ 0.25 A / 12 V @ 0.5 A 6 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) 0.44 (0.20) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-5-24*# / DST-5-24*# 24 VCT @ 0.5 A / 12 V @ 1.0 A 12 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) 0.70 (0.32) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-6-24 / DST-6-24 24 VCT @ 0.8 A / 12 V @ 1.6 A 20 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) 0.80 (0.36) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-7-24 / DST-7-24 24 VCT @ 1.5 A / 12 V @ 3.0 A 36 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) 1.1 (0.50) 6 Pin (ST) / 8 Pin (DST) Available ST-MS (screw) and ST-MN (nut). Size 7 has 4 mounting holes on 2.18 x 1.75 centers for #6 screws.
ST-2-28 / DST-2-28 28 VCT @ 0.04 A / 14 V @ 0.08 A 1.1 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) 0.17 (0.08) 6 Pin (ST) / 8 Pin (DST) -
ST-3-28 / DST-3-28 28 VCT @ 0.085 A / 14 V @ 0.17 A 2.4 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) 0.25 (0.11) 6 Pin (ST) / 8 Pin (DST) -
ST-4-28 / DST-4-28 28 VCT @ 0.2 A / 14 V @ 0.4 A 6 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) 0.44 (0.20) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-5-28 / DST-5-28 28 VCT @ 0.42 A / 14 V @ 0.84 A 12 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) 0.70 (0.32) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-6-28 / DST-6-28 28 VCT @ 0.7 A / 14 V @ 1.4 A 20 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) 0.80 (0.36) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-7-28 / DST-7-28 28 VCT @ 1.3 A / 14 V @ 2.6 A 36 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) 1.1 (0.50) 6 Pin (ST) / 8 Pin (DST) Available ST-MS (screw) and ST-MN (nut). Size 7 has 4 mounting holes on 2.18 x 1.75 centers for #6 screws.
ST-2-36 / DST-2-36 36 VCT @ 0.03 A / 18 V @ 0.06 A 1.1 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) 0.17 (0.08) 6 Pin (ST) / 8 Pin (DST) -
ST-3-36 / DST-3-36 36 VCT @ 0.065 A / 18 V @ 0.13 A 2.4 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) 0.25 (0.11) 6 Pin (ST) / 8 Pin (DST) -
ST-4-36 / DST-4-36 36 VCT @ 0.17 A / 18 V @ 0.34 A 6 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) 0.44 (0.20) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-5-36 / DST-5-36 36 VCT @ 0.35 A / 18 V @ 0.7 A 12 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) 0.70 (0.32) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-6-36 / DST-6-36 36 VCT @ 0.55 A / 18 V @ 1.1 A 20 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) 0.80 (0.36) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-7-36 / DST-7-36 36 VCT @ 1.0 A / 18 V @ 2.0 A 36 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) 1.1 (0.50) 6 Pin (ST) / 8 Pin (DST) Available ST-MS (screw) and ST-MN (nut). Size 7 has 4 mounting holes on 2.18 x 1.75 centers for #6 screws.
ST-2-48 / DST-2-48 48 VCT @ 0.023 A / 24 V @ 0.046 A 1.1 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) 0.17 (0.08) 6 Pin (ST) / 8 Pin (DST) -
ST-3-48 / DST-3-48 48 VCT @ 0.05 A / 24 V @ 0.1 A 2.4 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) 0.25 (0.11) 6 Pin (ST) / 8 Pin (DST) -
ST-4-48 / DST-4-48 48 VCT @ 0.125 A / 24 V @ 0.25 A 6 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) 0.44 (0.20) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-5-48 / DST-5-48 48 VCT @ 0.25 A / 24 V @ 0.5 A 12 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) 0.70 (0.32) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-6-48 / DST-6-48 48 VCT @ 0.4 A / 24 V @ 0.8 A 20 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) 0.80 (0.36) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-7-48 / DST-7-48 48 VCT @ 0.75 A / 24 V @ 1.5 A 36 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) 1.1 (0.50) 6 Pin (ST) / 8 Pin (DST) Available ST-MS (screw) and ST-MN (nut). Size 7 has 4 mounting holes on 2.18 x 1.75 centers for #6 screws.
ST-2-56 / DST-2-56 56 VCT @ 0.02 A / 28 V @ 0.04 A 1.1 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) 0.17 (0.08) 6 Pin (ST) / 8 Pin (DST) -
ST-3-56 / DST-3-56 56 VCT @ 0.045 A / 28 V @ 0.09 A 2.4 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) 0.25 (0.11) 6 Pin (ST) / 8 Pin (DST) -
ST-4-56 / DST-4-56 56 VCT @ 0.11 A / 28 V @ 0.22 A 6 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) 0.44 (0.20) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-5-56 / DST-5-56 56 VCT @ 0.22 A / 28 V @ 0.44 A 12 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) 0.70 (0.32) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-6-56 / DST-6-56 56 VCT @ 0.35 A / 28 V @ 0.7 A 20 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) 0.80 (0.36) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-7-56 / DST-7-56 56 VCT @ 0.65 A / 28 V @ 1.3 A 36 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) 1.1 (0.50) 6 Pin (ST) / 8 Pin (DST) Available ST-MS (screw) and ST-MN (nut). Size 7 has 4 mounting holes on 2.18 x 1.75 centers for #6 screws.
ST-2-120 / DST-2-120 120 VCT @ 0.01 A / 60 V @ 0.02 A 1.1 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) 0.17 (0.08) 6 Pin (ST) / 8 Pin (DST) -
ST-3-120 / DST-3-120 120 VCT @ 0.02 A / 60 V @ 0.04 A 2.4 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) 0.25 (0.11) 6 Pin (ST) / 8 Pin (DST) -
ST-4-120 / DST-4-120 120 VCT @ 0.05 A / 60 V @ 0.1 A 6 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) 0.44 (0.20) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-5-120 / DST-5-120 120 VCT @ 0.1 A / 60 V @ 0.2 A 12 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) 0.70 (0.32) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-6-120 / DST-6-120 120 VCT @ 0.16 A / 60 V @ 0.32 A 20 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) 0.80 (0.36) 6 Pin (ST) / 8 Pin (DST) Nylon 4-40 x 1.37 (34.9)
ST-7-120 / DST-7-120 120 VCT @ 0.3 A / 60 V @ 0.6 A 36 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) 1.1 (0.50) 6 Pin (ST) / 8 Pin (DST) Available ST-MS (screw) and ST-MN (nut). Size 7 has 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
Mounting Hardware: See chart
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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