Changsha Purple Horn E-Commerce Co., Ltd.
                                                                                                           
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Dual Cavity Split Bobbin Transformer with High Isolation and Low Capacitive Coupling Bel Fuse ST-3-120

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 with a dual cavity platform to provide superior isolation and low capacitive coupling. These split bobbin transformers feature rigid pin construction for easier board insertion and enhanced reliability. They are suitable for a wide range of power applications from 1.1 VA to 36 VA, offering dielectric strength of 2500 Vrms Hipot and an Insulation System of Class F (155C). Available in single or dual primary configurations (115 V or 115/230 V, 50/60 Hz) with series or parallel secondary options, these transformers are RoHS Compliant and carry multiple agency certifications.

Product Attributes

  • Brand: Signal Transformer
  • Series: ST/DST Series Split/Tran
  • Construction: Split Bobbin, Dual Cavity
  • Isolation: High Isolation, Low Capacitive Coupling
  • Pin Construction: Rigid
  • Insulation System: Class F, 155C
  • Compliance: RoHS Compliant
  • 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 (#)
    • (*) CSA certified as Inherently Limited
    • (**) CSA certified as Non Inherently Limited
    • (#) UL Recognized UL5085-3, Inherently Limited File # E116583

Technical Specifications

Part Number Secondary RMS Rating Power (VA) Primary Configuration Secondary Configuration Approx. Weight (lbs/kg) Dimensions L x W x H (inches/mm)
ST-2-10**# / DST-2-10**# 10 VCT @ 0.11 A / 5 V @ 0.22 A 1.1 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.17 (0.08) 1.37 x 1.12 x 0.97 (34.9 x 28.6 x 24.6)
ST-3-10*# / DST-3-10*# 10 VCT @ 0.25 A (5) / 5 V @ 0.5 A (9) 2.4 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.25 (0.11) 1.37 x 1.12 x 1.21 (34.9 x 28.6 x 30.8)
ST-4-10*# / DST-4-10*# 10 VCT @ 0.6 A (9) / 5 V @ 1.2 A (11) 6 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.44 (0.20) 1.62 x 1.31 x 1.31 (41.3 x 33.3 x 33.3)
ST-5-10*# / DST-5-10*# 10 VCT @ 1.2 A (11) / 5 V @ 2.4 A (13) 12 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.70 (0.32) 1.91 x 1.59 x 1.45 (48.4 x 40.4 x 36.9)
ST-6-10 / DST-6-10 10 VCT @ 2.0 A / 5 V @ 4.0 A 20 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.80 (0.36) 2.25 x 1.88 x 1.45 (57.2 x 47.8 x 36.9)
ST-7-10 / DST-7-10 10 VCT @ 3.6 A / 5 V @ 7.2 A 36 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 1.1 (0.50) 2.62 x 2.18 x 1.59 (66.7 x 55.5 x 40.4)
ST-2-12**# / DST-2-12**# 12.6 VCT @ 0.09 A / 6.3 V @ 0.18 A 1.1 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.17 (0.08) 1.37 x 1.12 x 0.97 (34.9 x 28.6 x 24.6)
ST-3-12*# / DST-3-12*# 12.6 VCT @ 0.2 A (4) / 6.3 V @ 0.4 A (8) 2.4 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.25 (0.11) 1.37 x 1.12 x 1.21 (34.9 x 28.6 x 30.8)
ST-4-12*# / DST-4-12*# 12.6 VCT @ 0.5 A (9) / 6.3 V @ 1.0 A (11) 6 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.44 (0.20) 1.62 x 1.31 x 1.31 (41.3 x 33.3 x 33.3)
ST-5-12*# / DST-5-12*# 12.6 VCT @ 1.0 A (11) / 6.3 V @ 2.0 A (13) 12 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.70 (0.32) 1.91 x 1.59 x 1.45 (48.4 x 40.4 x 36.9)
ST-6-12 / DST-6-12 12.6 VCT @ 1.6 A / 6.3 V @ 3.2 A 20 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.80 (0.36) 2.25 x 1.88 x 1.45 (57.2 x 47.8 x 36.9)
ST-7-12 / DST-7-12 12.6 VCT @ 2.85 A / 6.3 V @ 5.7 A 36 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 1.1 (0.50) 2.62 x 2.18 x 1.59 (66.7 x 55.5 x 40.4)
ST-2-16**# / DST-2-16**# 16 VCT @ 0.07 A / 8 V @ 0.14 A 1.1 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.17 (0.08) 1.37 x 1.12 x 0.97 (34.9 x 28.6 x 24.6)
ST-3-16*# / DST-3-16*# 16 VCT @ 0.15 A (3) / 8 V @ 0.3 A (6) 2.4 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.25 (0.11) 1.37 x 1.12 x 1.21 (34.9 x 28.6 x 30.8)
ST-4-16*# / DST-4-16*# 16 VCT @ 0.4 A (7) / 8 V @ 0.8 A (10) 6 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.44 (0.20) 1.62 x 1.31 x 1.31 (41.3 x 33.3 x 33.3)
ST-5-16*# / DST-5-16*# 16 VCT @ 0.8 A (10) / 8 V @ 1.6 A (12) 12 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.70 (0.32) 1.91 x 1.59 x 1.45 (48.4 x 40.4 x 36.9)
ST-6-16 / DST-6-16 16 VCT @ 1.25 A / 8 V @ 2.5 A 20 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.80 (0.36) 2.25 x 1.88 x 1.45 (57.2 x 47.8 x 36.9)
ST-7-16 / DST-7-16 16 VCT @ 2.25 A / 8 V @ 4.5 A 36 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 1.1 (0.50) 2.62 x 2.18 x 1.59 (66.7 x 55.5 x 40.4)
ST-2-20**# / DST-2-20**# 20 VCT @ 0.055 A / 10 V @ 0.11 A 1.1 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.17 (0.08) 1.37 x 1.12 x 0.97 (34.9 x 28.6 x 24.6)
ST-3-20*# / DST-3-20*# 20 VCT @ 0.12 A (2) / 10 V @ 0.24 A (5) 2.4 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.25 (0.11) 1.37 x 1.12 x 1.21 (34.9 x 28.6 x 30.8)
ST-4-20*# / DST-4-20*# 20 VCT @ 0.3 A (6) / 10 V @ 0.6 A (9) 6 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.44 (0.20) 1.62 x 1.31 x 1.31 (41.3 x 33.3 x 33.3)
ST-5-20*# / DST-5-20*# 20 VCT @ 0.6 A (9) / 10 V @ 1.2 A (11) 12 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.70 (0.32) 1.91 x 1.59 x 1.45 (48.4 x 40.4 x 36.9)
ST-6-20 / DST-6-20 20 VCT @ 1.0 A / 10 V @ 2.0 A 20 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.80 (0.36) 2.25 x 1.88 x 1.45 (57.2 x 47.8 x 36.9)
ST-7-20 / DST-7-20 20 VCT @ 1.8 A / 10 V @ 3.6 A 36 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 1.1 (0.50) 2.62 x 2.18 x 1.59 (66.7 x 55.5 x 40.4)
ST-2-24**# / DST-2-24**# 24 VCT @ 0.045 A / 12 V @ 0.09 A 1.1 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.17 (0.08) 1.37 x 1.12 x 0.97 (34.9 x 28.6 x 24.6)
ST-3-24*# / DST-3-24*# 24 VCT @ 0.1 A (1) / 12 V @ 0.2 A (4) 2.4 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.25 (0.11) 1.37 x 1.12 x 1.21 (34.9 x 28.6 x 30.8)
ST-4-24*# / DST-4-24*# 24 VCT @ 0.25 A (5) / 12 V @ 0.5 A (9) 6 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.44 (0.20) 1.62 x 1.31 x 1.31 (41.3 x 33.3 x 33.3)
ST-5-24*# / DST-5-24*# 24 VCT @ 0.5 A (9) / 12 V @ 1.0 A (11) 12 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.70 (0.32) 1.91 x 1.59 x 1.45 (48.4 x 40.4 x 36.9)
ST-6-24 / DST-6-24 24 VCT @ 0.8 A / 12 V @ 1.6 A 20 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.80 (0.36) 2.25 x 1.88 x 1.45 (57.2 x 47.8 x 36.9)
ST-7-24 / DST-7-24 24 VCT @ 1.5 A / 12 V @ 3.0 A 36 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 1.1 (0.50) 2.62 x 2.18 x 1.59 (66.7 x 55.5 x 40.4)
ST-2-28 / DST-2-28 28 VCT @ 0.04 A / 14 V @ 0.08 A 1.1 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.17 (0.08) 1.37 x 1.12 x 0.97 (34.9 x 28.6 x 24.6)
ST-3-28 / DST-3-28 28 VCT @ 0.085 A / 14 V @ 0.17 A 2.4 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.25 (0.11) 1.37 x 1.12 x 1.21 (34.9 x 28.6 x 30.8)
ST-4-28 / DST-4-28 28 VCT @ 0.2 A / 14 V @ 0.4 A 6 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.44 (0.20) 1.62 x 1.31 x 1.31 (41.3 x 33.3 x 33.3)
ST-5-28 / DST-5-28 28 VCT @ 0.42 A / 14 V @ 0.84 A 12 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.70 (0.32) 1.91 x 1.59 x 1.45 (48.4 x 40.4 x 36.9)
ST-6-28 / DST-6-28 28 VCT @ 0.7 A / 14 V @ 1.4 A 20 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.80 (0.36) 2.25 x 1.88 x 1.45 (57.2 x 47.8 x 36.9)
ST-7-28 / DST-7-28 28 VCT @ 1.3 A / 14 V @ 2.6 A 36 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 1.1 (0.50) 2.62 x 2.18 x 1.59 (66.7 x 55.5 x 40.4)
ST-2-36 / DST-2-36 36 VCT @ 0.03 A / 18 V @ 0.06 A 1.1 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.17 (0.08) 1.37 x 1.12 x 0.97 (34.9 x 28.6 x 24.6)
ST-3-36 / DST-3-36 36 VCT @ 0.065 A / 18 V @ 0.13 A 2.4 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.25 (0.11) 1.37 x 1.12 x 1.21 (34.9 x 28.6 x 30.8)
ST-4-36 / DST-4-36 36 VCT @ 0.17 A / 18 V @ 0.34 A 6 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.44 (0.20) 1.62 x 1.31 x 1.31 (41.3 x 33.3 x 33.3)
ST-5-36 / DST-5-36 36 VCT @ 0.35 A / 18 V @ 0.7 A 12 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.70 (0.32) 1.91 x 1.59 x 1.45 (48.4 x 40.4 x 36.9)
ST-6-36 / DST-6-36 36 VCT @ 0.55 A / 18 V @ 1.1 A 20 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.80 (0.36) 2.25 x 1.88 x 1.45 (57.2 x 47.8 x 36.9)
ST-7-36 / DST-7-36 36 VCT @ 1.0 A / 18 V @ 2.0 A 36 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 1.1 (0.50) 2.62 x 2.18 x 1.59 (66.7 x 55.5 x 40.4)
ST-2-48 / DST-2-48 48 VCT @ 0.023 A / 24 V @ 0.046 A 1.1 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.17 (0.08) 1.37 x 1.12 x 0.97 (34.9 x 28.6 x 24.6)
ST-3-48 / DST-3-48 48 VCT @ 0.05 A / 24 V @ 0.1 A 2.4 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.25 (0.11) 1.37 x 1.12 x 1.21 (34.9 x 28.6 x 30.8)
ST-4-48 / DST-4-48 48 VCT @ 0.125 A / 24 V @ 0.25 A 6 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.44 (0.20) 1.62 x 1.31 x 1.31 (41.3 x 33.3 x 33.3)
ST-5-48 / DST-5-48 48 VCT @ 0.25 A / 24 V @ 0.5 A 12 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.70 (0.32) 1.91 x 1.59 x 1.45 (48.4 x 40.4 x 36.9)
ST-6-48 / DST-6-48 48 VCT @ 0.4 A / 24 V @ 0.8 A 20 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.80 (0.36) 2.25 x 1.88 x 1.45 (57.2 x 47.8 x 36.9)
ST-7-48 / DST-7-48 48 VCT @ 0.75 A / 24 V @ 1.5 A 36 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 1.1 (0.50) 2.62 x 2.18 x 1.59 (66.7 x 55.5 x 40.4)
ST-2-56 / DST-2-56 56 VCT @ 0.02 A / 28 V @ 0.04 A 1.1 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.17 (0.08) 1.37 x 1.12 x 0.97 (34.9 x 28.6 x 24.6)
ST-3-56 / DST-3-56 56 VCT @ 0.045 A / 28 V @ 0.09 A 2.4 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.25 (0.11) 1.37 x 1.12 x 1.21 (34.9 x 28.6 x 30.8)
ST-4-56 / DST-4-56 56 VCT @ 0.11 A / 28 V @ 0.22 A 6 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.44 (0.20) 1.62 x 1.31 x 1.31 (41.3 x 33.3 x 33.3)
ST-5-56 / DST-5-56 56 VCT @ 0.22 A / 28 V @ 0.44 A 12 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.70 (0.32) 1.91 x 1.59 x 1.45 (48.4 x 40.4 x 36.9)
ST-6-56 / DST-6-56 56 VCT @ 0.35 A / 28 V @ 0.7 A 20 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.80 (0.36) 2.25 x 1.88 x 1.45 (57.2 x 47.8 x 36.9)
ST-7-56 / DST-7-56 56 VCT @ 0.65 A / 28 V @ 1.3 A 36 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 1.1 (0.50) 2.62 x 2.18 x 1.59 (66.7 x 55.5 x 40.4)
ST-2-120 / DST-2-120 120 VCT @ 0.01 A / 60 V @ 0.02 A 1.1 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.17 (0.08) 1.37 x 1.12 x 0.97 (34.9 x 28.6 x 24.6)
ST-3-120 / DST-3-120 120 VCT @ 0.02 A / 60 V @ 0.04 A 2.4 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.25 (0.11) 1.37 x 1.12 x 1.21 (34.9 x 28.6 x 30.8)
ST-4-120 / DST-4-120 120 VCT @ 0.05 A / 60 V @ 0.1 A 6 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.44 (0.20) 1.62 x 1.31 x 1.31 (41.3 x 33.3 x 33.3)
ST-5-120 / DST-5-120 120 VCT @ 0.1 A / 60 V @ 0.2 A 12 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.70 (0.32) 1.91 x 1.59 x 1.45 (48.4 x 40.4 x 36.9)
ST-6-120 / DST-6-120 120 VCT @ 0.16 A / 60 V @ 0.32 A 20 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 0.80 (0.36) 2.25 x 1.88 x 1.45 (57.2 x 47.8 x 36.9)
ST-7-120 / DST-7-120 120 VCT @ 0.3 A / 60 V @ 0.6 A 36 Single 115 V (6 Pin) / Dual 115/230 V (8 Pin) Series / Parallel 1.1 (0.50) 2.62 x 2.18 x 1.59 (66.7 x 55.5 x 40.4)
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 (Optional Mounting Screw & Nut available: ST-MS (screw), ST-MN (nut))
Size 7 Mounting: 4 mounting holes on 2.18 x 1.75 centers for #6 screws.
Recommended Secondary Fuse Values (Referenced by numbers in Secondary RMS Rating column):
(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

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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