Bel Fuse Signal ST/DST Series Split/Tran Specialty Purpose & Class 2 Transformers
Product Overview
The Bel Fuse Signal ST and DST Series Split/Tran transformers are specialty purpose and Class 2 transformers designed for printed circuit board mounting. Utilizing a dual cavity platform, these transformers offer superior isolation and low capacitive coupling, enhancing reliability and performance. The rigid pin construction facilitates easier board insertion. They 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: Bel Fuse Signal
- Series: ST / DST Series Split/Tran
- Construction: Split Bobbin with Dual Cavity Platform
- Insulation System: Class F, 155 C
- 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 (**) 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
- Compliance: RoHS Compliant
- Origin: USA (implied by address)
Technical Specifications
| Model Type | VA Rating | Secondary RMS Rating (Series) | Secondary RMS Rating (Parallel) | Primary Voltage | Frequency | Dielectric Strength | Dimensions (L x W x H) | Weight (approx.) |
|---|---|---|---|---|---|---|---|---|
| ST-2 | 1.1 | 10 VCT @ 0.11 A | 5 V @ 0.22 A | 115 V | 50/60 Hz | 2500 Vrms Hipot | 1.37" x 1.12" x 0.97" (34.9 x 28.6 x 24.6 mm) | 0.17 lbs (0.08 kg) |
| DST-2 | 1.1 | 10 VCT @ 0.11 A | 5 V @ 0.22 A | 115/230 V | 50/60 Hz | 1.37" x 1.12" x 0.97" (34.9 x 28.6 x 24.6 mm) | 0.17 lbs (0.08 kg) | |
| ST-3 | 2.4 | 10 VCT @ 0.25 A | 5 V @ 0.5 A | 115 V | 50/60 Hz | 1.37" x 1.12" x 1.21" (34.9 x 28.6 x 30.8 mm) | 0.25 lbs (0.11 kg) | |
| DST-3 | 2.4 | 10 VCT @ 0.25 A | 5 V @ 0.5 A | 115/230 V | 50/60 Hz | 1.37" x 1.12" x 1.21" (34.9 x 28.6 x 30.8 mm) | 0.25 lbs (0.11 kg) | |
| ST-4 | 6 | 10 VCT @ 0.6 A | 5 V @ 1.2 A | 115 V | 50/60 Hz | 1.62" x 1.31" x 1.31" (41.3 x 33.3 x 33.3 mm) | 0.44 lbs (0.20 kg) | |
| DST-4 | 6 | 10 VCT @ 0.6 A | 5 V @ 1.2 A | 115/230 V | 50/60 Hz | 1.62" x 1.31" x 1.31" (41.3 x 33.3 x 33.3 mm) | 0.44 lbs (0.20 kg) | |
| ST-5 | 12 | 10 VCT @ 1.2 A | 5 V @ 2.4 A | 115 V | 50/60 Hz | 1.91" x 1.59" x 1.45" (48.4 x 40.4 x 36.9 mm) | 0.70 lbs (0.32 kg) | |
| DST-5 | 12 | 10 VCT @ 1.2 A | 5 V @ 2.4 A | 115/230 V | 50/60 Hz | 1.91" x 1.59" x 1.45" (48.4 x 40.4 x 36.9 mm) | 0.70 lbs (0.32 kg) | |
| ST-6 | 20 | 10 VCT @ 2.0 A | 5 V @ 4.0 A | 115 V | 50/60 Hz | 2.25" x 1.88" x 1.45" (57.2 x 47.8 x 36.9 mm) | 0.80 lbs (0.36 kg) | |
| DST-6 | 20 | 10 VCT @ 2.0 A | 5 V @ 4.0 A | 115/230 V | 50/60 Hz | 2.25" x 1.88" x 1.45" (57.2 x 47.8 x 36.9 mm) | 0.80 lbs (0.36 kg) | |
| ST-7 | 36 | 10 VCT @ 3.6 A | 5 V @ 7.2 A | 115 V | 50/60 Hz | 2500 Vrms Hipot | 2.62" x 2.18" x 1.59" (66.7 x 55.5 x 40.4 mm) | 1.1 lbs (0.50 kg) |
| DST-7 | 36 | 10 VCT @ 3.6 A | 5 V @ 7.2 A | 115/230 V | 50/60 Hz | 2500 Vrms Hipot | 2.62" x 2.18" x 1.59" (66.7 x 55.5 x 40.4 mm) | 1.1 lbs (0.50 kg) |
| Note: Specific secondary voltage and current ratings vary by part number. Please refer to the part number selection chart for detailed options. Mounting hardware (ST-MS screw, ST-MN nut) available separately for Size 7. Size 7 has 4 mounting holes on 2.18" x 1.75" centers for #6 screws. | ||||||||
Contact Information:
Bel Fuse Signal
128 Atlantic Avenue, Lynbrook, NY 11563
Toll Free: 866-239-5777 | Tel: 516-239-5777 | Fax: 516-239-7208
Email: sales@signaltransformer.com | techhelp@signaltransformer.com
Custom versions available upon request. 2020 Signal Transformer. Specifications subject to change without notice.
2411272143_Bel-Fuse-ST-2-56_C17379409.pdf
Please Use Our Online Inquiry Contact Form Below If You Have Any Questions, Our Team Will Get Back To You As Soon As Possible
