Product Overview
The Signal ST/DST Series Split/Tran Specialty Purpose & Class 2 Transformers are designed for reliable signal applications, featuring a split bobbin construction with dual cavities for superior isolation and low capacitive coupling. These transformers offer rigid pin construction for enhanced board insertion and overall reliability. They are suitable for a wide range of power requirements from 1.1 VA to 36 VA and comply with various agency certifications, including UL and CSA recognition, making them a robust choice for industrial and specialty applications.
Product Attributes
- Brand: Signal Transformer
- Series: ST/DST Series Split/Tran
- Construction: Split Bobbin with Dual Cavity
- Pin Construction: Rigid
- Insulation System: Class F, 155 C
- RoHS Compliant: Yes
- Agency 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, UL Recognized UL5085-3 (Inherently Limited)
Technical Specifications
| Model Type | Power (VA) | Secondary RMS Rating (Series) | Secondary RMS Rating (Parallel) | Primary Options | Dielectric Strength (Vrms Hipot) | Insulation System | Dimensions (L x W x H) Inches (mm) | Weight lbs (kg) |
|---|---|---|---|---|---|---|---|---|
| ST-2 | 1.1 | 10 VCT @ 0.11 A | 5 V @ 0.22 A | Single 115 V (6 Pin) | 2500 | Class F, 155 C | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) | 0.17 (0.08) |
| DST-2 | 1.1 | 10 VCT @ 0.11 A | 5 V @ 0.22 A | Dual 115/230 V (8 Pin) | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) | 0.17 (0.08) | ||
| ST-3 | 2.4 | 10 VCT @ 0.25 A | 5 V @ 0.5 A | Single 115 V (6 Pin) | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) | 0.25 (0.11) | ||
| DST-3 | 2.4 | 10 VCT @ 0.25 A | 5 V @ 0.5 A | Dual 115/230 V (8 Pin) | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) | 0.25 (0.11) | ||
| ST-4 | 6 | 10 VCT @ 0.6 A | 5 V @ 1.2 A | Single 115 V (6 Pin) | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) | 0.44 (0.20) | ||
| DST-4 | 6 | 10 VCT @ 0.6 A | 5 V @ 1.2 A | Dual 115/230 V (8 Pin) | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) | 0.44 (0.20) | ||
| ST-5 | 12 | 10 VCT @ 1.2 A | 5 V @ 2.4 A | Single 115 V (6 Pin) | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) | 0.70 (0.32) | ||
| DST-5 | 12 | 10 VCT @ 1.2 A | 5 V @ 2.4 A | Dual 115/230 V (8 Pin) | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) | 0.70 (0.32) | ||
| ST-6 | 20 | 10 VCT @ 2.0 A | 5 V @ 4.0 A | Single 115 V (6 Pin) | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) | 0.80 (0.36) | ||
| DST-6 | 20 | 10 VCT @ 2.0 A | 5 V @ 4.0 A | Dual 115/230 V (8 Pin) | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) | 0.80 (0.36) | ||
| ST-7 | 36 | 10 VCT @ 3.6 A | 5 V @ 7.2 A | Single 115 V (6 Pin) | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) | 1.1 (0.50) | ||
| DST-7 | 36 | 10 VCT @ 3.6 A | 5 V @ 7.2 A | Dual 115/230 V (8 Pin) | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) | 1.1 (0.50) | ||
| General Specifications | 1.1 VA to 36 VA | N/A | N/A | Single or dual primaries, 115 V or 115/230 V, 50/60 Hz | 2500 Vrms | Class F, 155 C | N/A | N/A |
Note: Specific secondary voltage and current ratings vary by part number. Refer to the part number selection chart for detailed configurations. Mounting hardware details are available in a separate Accessories datasheet.
Size 7 has 4 mounting holes on 2.18 x 1.75 centers for #6 screws.
Optional Mounting Screw & Nut: ST-MS (screw), ST-MN (nut) available from Signal.
For Class 2 ratings, models are marked with (*), (**), or (#).
CSA certified as Inherently Limited (*) or Non Inherently Limited (see recommended fuse rating table).
UL Recognized UL5085-3, Inherently Limited (#).
2411272143_Bel-Fuse-DST-4-20_C17682510.pdf
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