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Specifications
Secondary Winding:
2
Isolation Voltage(Vrms):
2.5kV
Primary Winding(s):
2
Secondary Side Voltage:
28V;56V
Output Current:
1.3A;650mA
Primary Side Voltage:
115V;230V
Mfr. Part #:
DST-7-56
Package:
Through Hole-8P,66.7x55.5mm
Key Attributes
Model Number:
DST-7-56
Product Description
Product Overview
The Signal ST/DST Series Split/Tran Specialty Purpose & Class 2 Transformers are designed for high isolation and low capacitive coupling, utilizing a dual cavity split bobbin platform. These transformers feature rigid pin construction for simplified board insertion and enhanced reliability. They are suitable for a wide range of power applications, from 1.1 VA to 36 VA, and are built with a Class F (155C) insulation system. The series is agency certified by UL and CSA, meeting stringent safety and performance standards, and is RoHS compliant.
Product Attributes
- Brand: Signal Transformer (Bel Fuse)
- Series: ST/DST Series Split/Tran
- Type: Specialty Purpose & Class 2 Transformers
- Construction: Split Bobbin, Dual Cavity
- Insulation System: Class F, 155C
- Certifications: UL 1446, UL Recognized 506 / UL 5085-1, 2, CSA certified to C22.2 #66.1, cCSAus certified to C22.2 #66.3 / UL 5085-3
- Compliance: RoHS Compliant
Technical Specifications
| Model | VA Rating | Secondary RMS Rating (Series) | Secondary RMS Rating (Parallel) | Primary Options | Pin Configuration | Dielectric Strength | Dimensions (L x W x H) | Weight (lbs/kg) |
|---|---|---|---|---|---|---|---|---|
| ST-2-10**# / DST-2-10**# | 1.1 | 10 VCT @ 0.11 A | 5 V @ 0.22 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37" (34.9mm) x 1.12" (28.6mm) x 0.97" (24.6mm) | 0.17 (0.08) |
| ST-3-10*# / DST-3-10*# | 2.4 | 10 VCT @ 0.25 A | 5 V @ 0.5 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37" (34.9mm) x 1.12" (28.6mm) x 1.21" (30.8mm) | 0.25 (0.11) |
| ST-4-10*# / DST-4-10*# | 6 | 10 VCT @ 0.6 A | 5 V @ 1.2 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.62" (41.3mm) x 1.31" (33.3mm) x 1.31" (33.3mm) | 0.44 (0.20) |
| ST-5-10*# / DST-5-10*# | 12 | 10 VCT @ 1.2 A | 5 V @ 2.4 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.91" (48.4mm) x 1.59" (40.4mm) x 1.45" (36.9mm) | 0.70 (0.32) |
| ST-6-10 / DST-6-10 | 20 | 10 VCT @ 2.0 A | 5 V @ 4.0 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.25" (57.2mm) x 1.88" (47.8mm) x 1.45" (36.9mm) | 0.80 (0.36) |
| ST-7-10 / DST-7-10 | 36 | 10 VCT @ 3.6 A | 5 V @ 7.2 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.62" (66.7mm) x 2.18" (55.5mm) x 1.59" (40.4mm) | 1.1 (0.50) |
| 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 | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37" (34.9mm) x 1.12" (28.6mm) x 0.97" (24.6mm) | 0.17 (0.08) |
| 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 | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37" (34.9mm) x 1.12" (28.6mm) x 1.21" (30.8mm) | 0.25 (0.11) |
| ST-4-12*# / DST-4-12*# | 6 | 12.6 VCT @ 0.5 A | 6.3 V @ 1.0 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.62" (41.3mm) x 1.31" (33.3mm) x 1.31" (33.3mm) | 0.44 (0.20) |
| ST-5-12*# / DST-5-12*# | 12 | 12.6 VCT @ 1.0 A | 6.3 V @ 2.0 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.91" (48.4mm) x 1.59" (40.4mm) x 1.45" (36.9mm) | 0.70 (0.32) |
| ST-6-12 / DST-6-12 | 20 | 12.6 VCT @ 1.6 A | 6.3 V @ 3.2 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.25" (57.2mm) x 1.88" (47.8mm) x 1.45" (36.9mm) | 0.80 (0.36) |
| ST-7-12 / DST-7-12 | 36 | 12.6 VCT @ 2.85 A | 6.3 V @ 5.7 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.62" (66.7mm) x 2.18" (55.5mm) x 1.59" (40.4mm) | 1.1 (0.50) |
| ST-2-16**# / DST-2-16**# | 1.1 | 16 VCT @ 0.07 A | 8 V @ 0.14 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37" (34.9mm) x 1.12" (28.6mm) x 0.97" (24.6mm) | 0.17 (0.08) |
| ST-3-16*# / DST-3-16*# | 2.4 | 16 VCT @ 0.15 A | 8 V @ 0.3 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37" (34.9mm) x 1.12" (28.6mm) x 1.21" (30.8mm) | 0.25 (0.11) |
| ST-4-16*# / DST-4-16*# | 6 | 16 VCT @ 0.4 A | 8 V @ 0.8 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.62" (41.3mm) x 1.31" (33.3mm) x 1.31" (33.3mm) | 0.44 (0.20) |
| ST-5-16*# / DST-5-16*# | 12 | 16 VCT @ 0.8 A | 8 V @ 1.6 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.91" (48.4mm) x 1.59" (40.4mm) x 1.45" (36.9mm) | 0.70 (0.32) |
| ST-6-16 / DST-6-16 | 20 | 16 VCT @ 1.25 A | 8 V @ 2.5 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.25" (57.2mm) x 1.88" (47.8mm) x 1.45" (36.9mm) | 0.80 (0.36) |
| ST-7-16 / DST-7-16 | 36 | 16 VCT @ 2.25 A | 8 V @ 4.5 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.62" (66.7mm) x 2.18" (55.5mm) x 1.59" (40.4mm) | 1.1 (0.50) |
| ST-2-20**# / DST-2-20**# | 1.1 | 20 VCT @ 0.055 A | 10 V @ 0.11 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37" (34.9mm) x 1.12" (28.6mm) x 0.97" (24.6mm) | 0.17 (0.08) |
| ST-3-20*# / DST-3-20*# | 2.4 | 20 VCT @ 0.12 A | 10 V @ 0.24 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37" (34.9mm) x 1.12" (28.6mm) x 1.21" (30.8mm) | 0.25 (0.11) |
| ST-4-20*# / DST-4-20*# | 6 | 20 VCT @ 0.3 A | 10 V @ 0.6 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.62" (41.3mm) x 1.31" (33.3mm) x 1.31" (33.3mm) | 0.44 (0.20) |
| ST-5-20*# / DST-5-20*# | 12 | 20 VCT @ 0.6 A | 10 V @ 1.2 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.91" (48.4mm) x 1.59" (40.4mm) x 1.45" (36.9mm) | 0.70 (0.32) |
| ST-6-20 / DST-6-20 | 20 | 20 VCT @ 1.0 A | 10 V @ 2.0 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.25" (57.2mm) x 1.88" (47.8mm) x 1.45" (36.9mm) | 0.80 (0.36) |
| ST-7-20 / DST-7-20 | 36 | 20 VCT @ 1.8 A | 10 V @ 3.6 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.62" (66.7mm) x 2.18" (55.5mm) x 1.59" (40.4mm) | 1.1 (0.50) |
| ST-2-24**# / DST-2-24**# | 1.1 | 24 VCT @ 0.045 A | 12 V @ 0.09 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37" (34.9mm) x 1.12" (28.6mm) x 0.97" (24.6mm) | 0.17 (0.08) |
| ST-3-24*# / DST-3-24*# | 2.4 | 24 VCT @ 0.1 A | 12 V @ 0.2 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37" (34.9mm) x 1.12" (28.6mm) x 1.21" (30.8mm) | 0.25 (0.11) |
| ST-4-24*# / DST-4-24*# | 6 | 24 VCT @ 0.25 A | 12 V @ 0.5 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.62" (41.3mm) x 1.31" (33.3mm) x 1.31" (33.3mm) | 0.44 (0.20) |
| ST-5-24*# / DST-5-24*# | 12 | 24 VCT @ 0.5 A | 12 V @ 1.0 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.91" (48.4mm) x 1.59" (40.4mm) x 1.45" (36.9mm) | 0.70 (0.32) |
| ST-6-24 / DST-6-24 | 20 | 24 VCT @ 0.8 A | 12 V @ 1.6 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.25" (57.2mm) x 1.88" (47.8mm) x 1.45" (36.9mm) | 0.80 (0.36) |
| ST-7-24 / DST-7-24 | 36 | 24 VCT @ 1.5 A | 12 V @ 3.0 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.62" (66.7mm) x 2.18" (55.5mm) x 1.59" (40.4mm) | 1.1 (0.50) |
| ST-2-28 / DST-2-28 | 1.1 | 28 VCT @ 0.04 A | 14 V @ 0.08 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37" (34.9mm) x 1.12" (28.6mm) x 0.97" (24.6mm) | 0.17 (0.08) |
| ST-3-28 / DST-3-28 | 2.4 | 28 VCT @ 0.085 A | 14 V @ 0.17 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37" (34.9mm) x 1.12" (28.6mm) x 1.21" (30.8mm) | 0.25 (0.11) |
| ST-4-28 / DST-4-28 | 6 | 28 VCT @ 0.2 A | 14 V @ 0.4 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.62" (41.3mm) x 1.31" (33.3mm) x 1.31" (33.3mm) | 0.44 (0.20) |
| ST-5-28 / DST-5-28 | 12 | 28 VCT @ 0.42 A | 14 V @ 0.84 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.91" (48.4mm) x 1.59" (40.4mm) x 1.45" (36.9mm) | 0.70 (0.32) |
| ST-6-28 / DST-6-28 | 20 | 28 VCT @ 0.7 A | 14 V @ 1.4 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.25" (57.2mm) x 1.88" (47.8mm) x 1.45" (36.9mm) | 0.80 (0.36) |
| ST-7-28 / DST-7-28 | 36 | 28 VCT @ 1.3 A | 14 V @ 2.6 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.62" (66.7mm) x 2.18" (55.5mm) x 1.59" (40.4mm) | 1.1 (0.50) |
| ST-2-36 / DST-2-36 | 1.1 | 36 VCT @ 0.03 A | 18 V @ 0.06 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37" (34.9mm) x 1.12" (28.6mm) x 0.97" (24.6mm) | 0.17 (0.08) |
| ST-3-36 / DST-3-36 | 2.4 | 36 VCT @ 0.065 A | 18 V @ 0.13 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37" (34.9mm) x 1.12" (28.6mm) x 1.21" (30.8mm) | 0.25 (0.11) |
| ST-4-36 / DST-4-36 | 6 | 36 VCT @ 0.17 A | 18 V @ 0.34 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.62" (41.3mm) x 1.31" (33.3mm) x 1.31" (33.3mm) | 0.44 (0.20) |
| ST-5-36 / DST-5-36 | 12 | 36 VCT @ 0.35 A | 18 V @ 0.7 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.91" (48.4mm) x 1.59" (40.4mm) x 1.45" (36.9mm) | 0.70 (0.32) |
| ST-6-36 / DST-6-36 | 20 | 36 VCT @ 0.55 A | 18 V @ 1.1 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.25" (57.2mm) x 1.88" (47.8mm) x 1.45" (36.9mm) | 0.80 (0.36) |
| ST-7-36 / DST-7-36 | 36 | 36 VCT @ 1.0 A | 18 V @ 2.0 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.62" (66.7mm) x 2.18" (55.5mm) x 1.59" (40.4mm) | 1.1 (0.50) |
| ST-2-48 / DST-2-48 | 1.1 | 48 VCT @ 0.023 A | 24 V @ 0.046 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37" (34.9mm) x 1.12" (28.6mm) x 0.97" (24.6mm) | 0.17 (0.08) |
| ST-3-48 / DST-3-48 | 2.4 | 48 VCT @ 0.05 A | 24 V @ 0.1 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37" (34.9mm) x 1.12" (28.6mm) x 1.21" (30.8mm) | 0.25 (0.11) |
| ST-4-48 / DST-4-48 | 6 | 48 VCT @ 0.125 A | 24 V @ 0.25 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.62" (41.3mm) x 1.31" (33.3mm) x 1.31" (33.3mm) | 0.44 (0.20) |
| ST-5-48 / DST-5-48 | 12 | 48 VCT @ 0.25 A | 24 V @ 0.5 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.91" (48.4mm) x 1.59" (40.4mm) x 1.45" (36.9mm) | 0.70 (0.32) |
| ST-6-48 / DST-6-48 | 20 | 48 VCT @ 0.4 A | 24 V @ 0.8 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.25" (57.2mm) x 1.88" (47.8mm) x 1.45" (36.9mm) | 0.80 (0.36) |
| ST-7-48 / DST-7-48 | 36 | 48 VCT @ 0.75 A | 24 V @ 1.5 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.62" (66.7mm) x 2.18" (55.5mm) x 1.59" (40.4mm) | 1.1 (0.50) |
| ST-2-56 / DST-2-56 | 1.1 | 56 VCT @ 0.02 A | 28 V @ 0.04 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37" (34.9mm) x 1.12" (28.6mm) x 0.97" (24.6mm) | 0.17 (0.08) |
| ST-3-56 / DST-3-56 | 2.4 | 56 VCT @ 0.045 A | 28 V @ 0.09 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37" (34.9mm) x 1.12" (28.6mm) x 1.21" (30.8mm) | 0.25 (0.11) |
| ST-4-56 / DST-4-56 | 6 | 56 VCT @ 0.11 A | 28 V @ 0.22 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.62" (41.3mm) x 1.31" (33.3mm) x 1.31" (33.3mm) | 0.44 (0.20) |
| ST-5-56 / DST-5-56 | 12 | 56 VCT @ 0.22 A | 28 V @ 0.44 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.91" (48.4mm) x 1.59" (40.4mm) x 1.45" (36.9mm) | 0.70 (0.32) |
| ST-6-56 / DST-6-56 | 20 | 56 VCT @ 0.35 A | 28 V @ 0.7 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.25" (57.2mm) x 1.88" (47.8mm) x 1.45" (36.9mm) | 0.80 (0.36) |
| ST-7-56 / DST-7-56 | 36 | 56 VCT @ 0.65 A | 28 V @ 1.3 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.62" (66.7mm) x 2.18" (55.5mm) x 1.59" (40.4mm) | 1.1 (0.50) |
| ST-2-120 / DST-2-120 | 1.1 | 120 VCT @ 0.01 A | 60 V @ 0.02 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37" (34.9mm) x 1.12" (28.6mm) x 0.97" (24.6mm) | 0.17 (0.08) |
| ST-3-120 / DST-3-120 | 2.4 | 120 VCT @ 0.02 A | 60 V @ 0.04 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37" (34.9mm) x 1.12" (28.6mm) x 1.21" (30.8mm) | 0.25 (0.11) |
| ST-4-120 / DST-4-120 | 6 | 120 VCT @ 0.05 A | 60 V @ 0.1 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.62" (41.3mm) x 1.31" (33.3mm) x 1.31" (33.3mm) | 0.44 (0.20) |
| ST-5-120 / DST-5-120 | 12 | 120 VCT @ 0.1 A | 60 V @ 0.2 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.91" (48.4mm) x 1.59" (40.4mm) x 1.45" (36.9mm) | 0.70 (0.32) |
| ST-6-120 / DST-6-120 | 20 | 120 VCT @ 0.16 A | 60 V @ 0.32 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.25" (57.2mm) x 1.88" (47.8mm) x 1.45" (36.9mm) | 0.80 (0.36) |
| ST-7-120 / DST-7-120 | 36 | 120 VCT @ 0.3 A | 60 V @ 0.6 A | 115 V / 115/230 V | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.62" (66.7mm) x 2.18" (55.5mm) x 1.59" (40.4mm) | 1.1 (0.50) |
Note: Part numbers marked with **#, *#, or # indicate specific agency certifications and Class 2 ratings. Consult the datasheet for detailed information on these markings.
Mounting Hardware: Available from Signal, part numbers ST-MS (screw) and ST-MN (nut). Size 7 features 4 mounting holes on 2.18" x 1.75" centers for #6 screws.
Custom versions available upon request.
2411272143_Bel-Fuse-DST-7-56_C17547179.pdf
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