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Specifications
Secondary Winding:
2
Isolation Voltage(Vrms):
2.5kV
Primary Winding(s):
1
Secondary Side Voltage:
60V;120V
Output Current:
100mA;50mA
Primary Side Voltage:
115V
Mfr. Part #:
ST-4-120
Package:
Through Hole-6P,41.3x33.3mm
Key Attributes
Model Number:
ST-4-120
Product Description
Signal ST / DST Series Split Bobbin Transformers
Product Overview
The Signal ST and DST Series Split/Tran Specialty Purpose & Class 2 Transformers are designed for reliable signal isolation and power applications. Utilizing a dual cavity platform, these split bobbin transformers offer superior isolation and low capacitive coupling, making them ideal for various electronic circuits. The rigid pin construction ensures easier board insertion and enhanced reliability. These transformers are suitable for applications requiring Class 2 compliance and meet stringent agency certifications.
Product Attributes
- Brand: Signal Transformer (belfuse.com/signal)
- Series: ST / DST 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 (#)
- CSA certified as Inherently Limited (*)
- CSA certified as Non Inherently Limited (**) - see recommended fuse rating table
- UL Recognized UL5085-3, Inherently Limited (#) File # E116583
Technical Specifications
| Part Number | Secondary RMS Rating | VA Rating | Primary Voltage | Frequency | Pin Configuration | Dielectric Strength | Dimensions (L x W x H) | Weight |
|---|---|---|---|---|---|---|---|---|
| ST-2-10**# / DST-2-10**# | 10 VCT @ 0.11 A / 5 V @ 0.22 A | ~2.2 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37 x 1.12 x 0.97 in (34.9 x 28.6 x 24.6 mm) | 0.17 lbs (0.08 kg) |
| ST-3-10*# / DST-3-10*# | 10 VCT @ 0.25 A (5) / 5 V @ 0.5 A (9) | ~5 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37 x 1.12 x 1.21 in (34.9 x 28.6 x 30.8 mm) | 0.25 lbs (0.11 kg) |
| ST-4-10*# / DST-4-10*# | 10 VCT @ 0.6 A (9) / 5 V @ 1.2 A (11) | ~12 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.62 x 1.31 x 1.31 in (41.3 x 33.3 x 33.3 mm) | 0.44 lbs (0.20 kg) |
| ST-5-10*# / DST-5-10*# | 10 VCT @ 1.2 A (11) / 5 V @ 2.4 A (13) | ~24 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.91 x 1.59 x 1.45 in (48.4 x 40.4 x 36.9 mm) | 0.70 lbs (0.32 kg) |
| ST-6-10 / DST-6-10 | 10 VCT @ 2.0 A / 5 V @ 4.0 A | ~40 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.25 x 1.88 x 1.45 in (57.2 x 47.8 x 36.9 mm) | 0.80 lbs (0.36 kg) |
| ST-7-10 / DST-7-10 | 10 VCT @ 3.6 A / 5 V @ 7.2 A | ~72 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.62 x 2.18 x 1.59 in (66.7 x 55.5 x 40.4 mm) | 1.1 lbs (0.50 kg) |
| ST-2-12**# / DST-2-12**# | 12.6 VCT @ 0.09 A / 6.3 V @ 0.18 A | ~2.2 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37 x 1.12 x 0.97 in (34.9 x 28.6 x 24.6 mm) | 0.17 lbs (0.08 kg) |
| ST-3-12*# / DST-3-12*# | 12.6 VCT @ 0.2 A (4) / 6.3 V @ 0.4 A (8) | ~5 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37 x 1.12 x 1.21 in (34.9 x 28.6 x 30.8 mm) | 0.25 lbs (0.11 kg) |
| ST-4-12*# / DST-4-12*# | 12.6 VCT @ 0.5 A (9) / 6.3 V @ 1.0 A (11) | ~12 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.62 x 1.31 x 1.31 in (41.3 x 33.3 x 33.3 mm) | 0.44 lbs (0.20 kg) |
| ST-5-12*# / DST-5-12*# | 12.6 VCT @ 1.0 A (11) / 6.3 V @ 2.0 A (13) | ~24 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.91 x 1.59 x 1.45 in (48.4 x 40.4 x 36.9 mm) | 0.70 lbs (0.32 kg) |
| ST-6-12 / DST-6-12 | 12.6 VCT @ 1.6 A / 6.3 V @ 3.2 A | ~40 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.25 x 1.88 x 1.45 in (57.2 x 47.8 x 36.9 mm) | 0.80 lbs (0.36 kg) |
| ST-7-12 / DST-7-12 | 12.6 VCT @ 2.85 A / 6.3 V @ 5.7 A | ~72 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.62 x 2.18 x 1.59 in (66.7 x 55.5 x 40.4 mm) | 1.1 lbs (0.50 kg) |
| ST-2-16**# / DST-2-16**# | 16 VCT @ 0.07 A / 8 V @ 0.14 A | ~2.2 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37 x 1.12 x 0.97 in (34.9 x 28.6 x 24.6 mm) | 0.17 lbs (0.08 kg) |
| ST-3-16*# / DST-3-16*# | 16 VCT @ 0.15 A (3) / 8 V @ 0.3 A (6) | ~5 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37 x 1.12 x 1.21 in (34.9 x 28.6 x 30.8 mm) | 0.25 lbs (0.11 kg) |
| ST-4-16*# / DST-4-16*# | 16 VCT @ 0.4 A (7) / 8 V @ 0.8 A (10) | ~12 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.62 x 1.31 x 1.31 in (41.3 x 33.3 x 33.3 mm) | 0.44 lbs (0.20 kg) |
| ST-5-16*# / DST-5-16*# | 16 VCT @ 0.8 A (10) / 8 V @ 1.6 A (12) | ~24 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.91 x 1.59 x 1.45 in (48.4 x 40.4 x 36.9 mm) | 0.70 lbs (0.32 kg) |
| ST-6-16 / DST-6-16 | 16 VCT @ 1.25 A / 8 V @ 2.5 A | ~40 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.25 x 1.88 x 1.45 in (57.2 x 47.8 x 36.9 mm) | 0.80 lbs (0.36 kg) |
| ST-7-16 / DST-7-16 | 16 VCT @ 2.25 A / 8 V @ 4.5 A | ~72 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.62 x 2.18 x 1.59 in (66.7 x 55.5 x 40.4 mm) | 1.1 lbs (0.50 kg) |
| ST-2-20**# / DST-2-20**# | 20 VCT @ 0.055 A / 10 V @ 0.11 A | ~2.2 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37 x 1.12 x 0.97 in (34.9 x 28.6 x 24.6 mm) | 0.17 lbs (0.08 kg) |
| ST-3-20*# / DST-3-20*# | 20 VCT @ 0.12 A (2) / 10 V @ 0.24 A (5) | ~5 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37 x 1.12 x 1.21 in (34.9 x 28.6 x 30.8 mm) | 0.25 lbs (0.11 kg) |
| ST-4-20*# / DST-4-20*# | 20 VCT @ 0.3 A (6) / 10 V @ 0.6 A (9) | ~12 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.62 x 1.31 x 1.31 in (41.3 x 33.3 x 33.3 mm) | 0.44 lbs (0.20 kg) |
| ST-5-20*# / DST-5-20*# | 20 VCT @ 0.6 A (9) / 10 V @ 1.2 A (11) | ~24 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.91 x 1.59 x 1.45 in (48.4 x 40.4 x 36.9 mm) | 0.70 lbs (0.32 kg) |
| ST-6-20 / DST-6-20 | 20 VCT @ 1.0 A / 10 V @ 2.0 A | ~40 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.25 x 1.88 x 1.45 in (57.2 x 47.8 x 36.9 mm) | 0.80 lbs (0.36 kg) |
| ST-7-20 / DST-7-20 | 20 VCT @ 1.8 A / 10 V @ 3.6 A | ~72 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.62 x 2.18 x 1.59 in (66.7 x 55.5 x 40.4 mm) | 1.1 lbs (0.50 kg) |
| ST-2-24**# / DST-2-24**# | 24 VCT @ 0.045 A / 12 V @ 0.09 A | ~2.2 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37 x 1.12 x 0.97 in (34.9 x 28.6 x 24.6 mm) | 0.17 lbs (0.08 kg) |
| ST-3-24*# / DST-3-24*# | 24 VCT @ 0.1 A (1) / 12 V @ 0.2 A (4) | ~5 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37 x 1.12 x 1.21 in (34.9 x 28.6 x 30.8 mm) | 0.25 lbs (0.11 kg) |
| ST-4-24*# / DST-4-24*# | 24 VCT @ 0.25 A (5) / 12 V @ 0.5 A (9) | ~12 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.62 x 1.31 x 1.31 in (41.3 x 33.3 x 33.3 mm) | 0.44 lbs (0.20 kg) |
| ST-5-24*# / DST-5-24*# | 24 VCT @ 0.5 A (9) / 12 V @ 1.0 A (11) | ~24 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.91 x 1.59 x 1.45 in (48.4 x 40.4 x 36.9 mm) | 0.70 lbs (0.32 kg) |
| ST-6-24 / DST-6-24 | 24 VCT @ 0.8 A / 12 V @ 1.6 A | ~40 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.25 x 1.88 x 1.45 in (57.2 x 47.8 x 36.9 mm) | 0.80 lbs (0.36 kg) |
| ST-7-24 / DST-7-24 | 24 VCT @ 1.5 A / 12 V @ 3.0 A | ~72 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.62 x 2.18 x 1.59 in (66.7 x 55.5 x 40.4 mm) | 1.1 lbs (0.50 kg) |
| ST-2-28 / DST-2-28 | 28 VCT @ 0.04 A / 14 V @ 0.08 A | ~2.2 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37 x 1.12 x 0.97 in (34.9 x 28.6 x 24.6 mm) | 0.17 lbs (0.08 kg) |
| ST-3-28 / DST-3-28 | 28 VCT @ 0.085 A / 14 V @ 0.17 A | ~5 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37 x 1.12 x 1.21 in (34.9 x 28.6 x 30.8 mm) | 0.25 lbs (0.11 kg) |
| ST-4-28 / DST-4-28 | 28 VCT @ 0.2 A / 14 V @ 0.4 A | ~12 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.62 x 1.31 x 1.31 in (41.3 x 33.3 x 33.3 mm) | 0.44 lbs (0.20 kg) |
| ST-5-28 / DST-5-28 | 28 VCT @ 0.42 A / 14 V @ 0.84 A | ~24 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.91 x 1.59 x 1.45 in (48.4 x 40.4 x 36.9 mm) | 0.70 lbs (0.32 kg) |
| ST-6-28 / DST-6-28 | 28 VCT @ 0.7 A / 14 V @ 1.4 A | ~40 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.25 x 1.88 x 1.45 in (57.2 x 47.8 x 36.9 mm) | 0.80 lbs (0.36 kg) |
| ST-7-28 / DST-7-28 | 28 VCT @ 1.3 A / 14 V @ 2.6 A | ~72 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.62 x 2.18 x 1.59 in (66.7 x 55.5 x 40.4 mm) | 1.1 lbs (0.50 kg) |
| ST-2-36 / DST-2-36 | 36 VCT @ 0.03 A / 18 V @ 0.06 A | ~2.2 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37 x 1.12 x 0.97 in (34.9 x 28.6 x 24.6 mm) | 0.17 lbs (0.08 kg) |
| ST-3-36 / DST-3-36 | 36 VCT @ 0.065 A / 18 V @ 0.13 A | ~5 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37 x 1.12 x 1.21 in (34.9 x 28.6 x 30.8 mm) | 0.25 lbs (0.11 kg) |
| ST-4-36 / DST-4-36 | 36 VCT @ 0.17 A / 18 V @ 0.34 A | ~12 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.62 x 1.31 x 1.31 in (41.3 x 33.3 x 33.3 mm) | 0.44 lbs (0.20 kg) |
| ST-5-36 / DST-5-36 | 36 VCT @ 0.35 A / 18 V @ 0.7 A | ~24 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.91 x 1.59 x 1.45 in (48.4 x 40.4 x 36.9 mm) | 0.70 lbs (0.32 kg) |
| ST-6-36 / DST-6-36 | 36 VCT @ 0.55 A / 18 V @ 1.1 A | ~40 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.25 x 1.88 x 1.45 in (57.2 x 47.8 x 36.9 mm) | 0.80 lbs (0.36 kg) |
| ST-7-36 / DST-7-36 | 36 VCT @ 1.0 A / 18 V @ 2.0 A | ~72 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.62 x 2.18 x 1.59 in (66.7 x 55.5 x 40.4 mm) | 1.1 lbs (0.50 kg) |
| ST-2-48 / DST-2-48 | 48 VCT @ 0.023 A / 24 V @ 0.046 A | ~2.2 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37 x 1.12 x 0.97 in (34.9 x 28.6 x 24.6 mm) | 0.17 lbs (0.08 kg) |
| ST-3-48 / DST-3-48 | 48 VCT @ 0.05 A / 24 V @ 0.1 A | ~5 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37 x 1.12 x 1.21 in (34.9 x 28.6 x 30.8 mm) | 0.25 lbs (0.11 kg) |
| ST-4-48 / DST-4-48 | 48 VCT @ 0.125 A / 24 V @ 0.25 A | ~12 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.62 x 1.31 x 1.31 in (41.3 x 33.3 x 33.3 mm) | 0.44 lbs (0.20 kg) |
| ST-5-48 / DST-5-48 | 48 VCT @ 0.25 A / 24 V @ 0.5 A | ~24 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.91 x 1.59 x 1.45 in (48.4 x 40.4 x 36.9 mm) | 0.70 lbs (0.32 kg) |
| ST-6-48 / DST-6-48 | 48 VCT @ 0.4 A / 24 V @ 0.8 A | ~40 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.25 x 1.88 x 1.45 in (57.2 x 47.8 x 36.9 mm) | 0.80 lbs (0.36 kg) |
| ST-7-48 / DST-7-48 | 48 VCT @ 0.75 A / 24 V @ 1.5 A | ~72 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.62 x 2.18 x 1.59 in (66.7 x 55.5 x 40.4 mm) | 1.1 lbs (0.50 kg) |
| ST-2-56 / DST-2-56 | 56 VCT @ 0.02 A / 28 V @ 0.04 A | ~2.2 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37 x 1.12 x 0.97 in (34.9 x 28.6 x 24.6 mm) | 0.17 lbs (0.08 kg) |
| ST-3-56 / DST-3-56 | 56 VCT @ 0.045 A / 28 V @ 0.09 A | ~5 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37 x 1.12 x 1.21 in (34.9 x 28.6 x 30.8 mm) | 0.25 lbs (0.11 kg) |
| ST-4-56 / DST-4-56 | 56 VCT @ 0.11 A / 28 V @ 0.22 A | ~12 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.62 x 1.31 x 1.31 in (41.3 x 33.3 x 33.3 mm) | 0.44 lbs (0.20 kg) |
| ST-5-56 / DST-5-56 | 56 VCT @ 0.22 A / 28 V @ 0.44 A | ~24 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.91 x 1.59 x 1.45 in (48.4 x 40.4 x 36.9 mm) | 0.70 lbs (0.32 kg) |
| ST-6-56 / DST-6-56 | 56 VCT @ 0.35 A / 28 V @ 0.7 A | ~40 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.25 x 1.88 x 1.45 in (57.2 x 47.8 x 36.9 mm) | 0.80 lbs (0.36 kg) |
| ST-7-56 / DST-7-56 | 56 VCT @ 0.65 A / 28 V @ 1.3 A | ~72 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.62 x 2.18 x 1.59 in (66.7 x 55.5 x 40.4 mm) | 1.1 lbs (0.50 kg) |
| ST-2-120 / DST-2-120 | 120 VCT @ 0.01 A / 60 V @ 0.02 A | ~2.4 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37 x 1.12 x 0.97 in (34.9 x 28.6 x 24.6 mm) | 0.17 lbs (0.08 kg) |
| ST-3-120 / DST-3-120 | 120 VCT @ 0.02 A / 60 V @ 0.04 A | ~5 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.37 x 1.12 x 1.21 in (34.9 x 28.6 x 30.8 mm) | 0.25 lbs (0.11 kg) |
| ST-4-120 / DST-4-120 | 120 VCT @ 0.05 A / 60 V @ 0.1 A | ~12 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.62 x 1.31 x 1.31 in (41.3 x 33.3 x 33.3 mm) | 0.44 lbs (0.20 kg) |
| ST-5-120 / DST-5-120 | 120 VCT @ 0.1 A / 60 V @ 0.2 A | ~24 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 1.91 x 1.59 x 1.45 in (48.4 x 40.4 x 36.9 mm) | 0.70 lbs (0.32 kg) |
| ST-6-120 / DST-6-120 | 120 VCT @ 0.16 A / 60 V @ 0.32 A | ~40 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.25 x 1.88 x 1.45 in (57.2 x 47.8 x 36.9 mm) | 0.80 lbs (0.36 kg) |
| ST-7-120 / DST-7-120 | 120 VCT @ 0.3 A / 60 V @ 0.6 A | ~72 VA | Single 115 V / Dual 115/230 V | 50/60 Hz | 6 Pin (ST) / 8 Pin (DST) | 2500 Vrms Hipot | 2.62 x 2.18 x 1.59 in (66.7 x 55.5 x 40.4 mm) | 1.1 lbs (0.50 kg) |
General Specifications
| Specification | Details |
|---|---|
| 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 due to split bobbin construction |
| Insulation System | Class F, 155 C |
| Mounting Hardware | See chart for details. Available from Signal: ST-MS (screw) and ST-MN (nut). Size 7 has 4 mounting holes on 2.18 x 1.75 centers for #6 screws. |
Recommended Secondary Fuse Values
Refer to the part number suffix and the following 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 |
Specifications subject to change without notice. 2020 Signal Transformer.
2411272143_Bel-Fuse-ST-4-120_C17378375.pdf
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