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Specifications
Secondary Winding:
2
Isolation Voltage(Vrms):
2.5kV
Primary Winding(s):
1
Secondary Side Voltage:
60V;120V
Output Current:
40mA;20mA
Primary Side Voltage:
115V
Mfr. Part #:
ST-3-120
Package:
Through Hole-6P,34.9x28.6mm
Key Attributes
Model Number:
ST-3-120
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.
2411272143_Bel-Fuse-ST-3-120_C17386124.pdf
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