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China PCB Mount Split Bobbin Transformer Signal Transformer ST DST Series Including
China PCB Mount Split Bobbin Transformer Signal Transformer ST DST Series Including

  1. China PCB Mount Split Bobbin Transformer Signal Transformer ST DST Series Including

PCB Mount Split Bobbin Transformer Signal Transformer ST DST Series Including

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Secondary Winding 2
Isolation Voltage(Vrms) 2.5kV
Primary Winding(s) 1
Secondary Side Voltage 10V;20V
Output Current 240mA;120mA
Primary Side Voltage 115V
Description 115V Through Hole-6P,34.9x28.6mm Power Transformers RoHS
Mfr. Part # ST-3-20
Package Through Hole-6P,34.9x28.6mm
Model Number ST-3-20

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  1. Product Details
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Product Specification

Secondary Winding 2 Isolation Voltage(Vrms) 2.5kV
Primary Winding(s) 1 Secondary Side Voltage 10V;20V
Output Current 240mA;120mA Primary Side Voltage 115V
Description 115V Through Hole-6P,34.9x28.6mm Power Transformers RoHS Mfr. Part # ST-3-20
Package Through Hole-6P,34.9x28.6mm Model Number ST-3-20

Product Overview

The Signal ST / DST Series Split/Tran Specialty Purpose & Class 2 Transformers are designed for printed circuit board mounting. Utilizing a split bobbin with dual cavities, these transformers offer superior isolation and low capacitive coupling, eliminating the need for an electrostatic shield. Their rigid pin construction ensures easier board insertion and enhanced reliability. These transformers are suitable for a wide range of power applications from 1.1 VA to 36 VA and are available in single or dual primary configurations with various secondary voltage and current ratings.

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
  • Certifications: UL 1446 Class F, UL Recognized 506 / UL 5085-1, 2, CSA certified to C22.2 #66.1, cCSAus certified to C22.2 #66.3 / UL 5085-3, UL Recognized UL5085-3 Inherently Limited. Class 2 marking indicated by (*), (**), or (#).
  • Customization: Custom versions available upon request.

Technical Specifications

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

Mounting Hardware: Available from Signal, part numbers ST-MS (screw) and ST-MN (nut). See Accessories datasheet for mounting screw information.


2411272143_Bel-Fuse-ST-3-20_C17248689.pdf

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • Business Type:

    Manufacturer,Distributor/Wholesaler,Agent,Importer

  • Year Established:

    2009

  • Employee Number:

    >300

  • Ecer Certification:

    Verified Supplier

Changsha Purple Horn E-Commerce Co., Ltd. is a professional company focus on integrated circuit ic business. Changsha Purple Horn will also responsible with exporting and logistic business. there is professional factory Changsha Purple Horn which focus on desigining and manufacture.   ... Changsha Purple Horn E-Commerce Co., Ltd. is a professional company focus on integrated circuit ic business. Changsha Purple Horn will also responsible with exporting and logistic business. there is professional factory Changsha Purple Horn which focus on desigining and manufacture.   ...

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  • Changsha Purple Horn E-Commerce Co., Ltd.
  • 2332 Kaibin Commercial Plaza, No. 419 Shaoshan Middle Road, Shazitang Street, Yuhua District, Changsha City, Hunan Province
  • https://www.ictransformer.com/

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