<
>
Specifications
Secondary Winding:
2
Isolation Voltage(Vrms):
2.5kV
Primary Winding(s):
1
Secondary Side Voltage:
10V;20V
Output Current:
3.6A;1.8A
Primary Side Voltage:
115V
Mfr. Part #:
ST-7-20
Package:
Through Hole-6P,66.7x55.5mm
Key Attributes
Model Number:
ST-7-20
Product Description
Product Overview
The Signal ST and DST Series Split/Tran Specialty Purpose & Class 2 Transformers are designed for printed circuit board mounting. Utilizing a dual cavity platform, these transformers offer superior isolation and low capacitive coupling. Their rigid pin construction ensures easier board insertion and enhanced reliability. Suitable for a wide range of power requirements from 1.1 VA to 36 VA, they are built with a Class F (155C) insulation system and meet stringent agency certifications including UL and CSA recognition.
Product Attributes
- Brand: Signal Transformer (belfuse.com/signal)
- Series: ST / DST Series Split/Tran
- Construction: Split Bobbin with Dual Cavity
- Insulation System: Class F (155C)
- 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)
- Customization: Custom versions available upon request
Technical Specifications
| Model Type | Power (VA) | Dimensions (L x W x H) (inches) | Weight (lbs) | Primary Voltage | Secondary RMS Rating | Pin Configuration | Mounting Hardware |
|---|---|---|---|---|---|---|---|
| ST-2 | 1.1 | 1.37 x 1.12 x 0.97 | 0.17 (0.08 kg) | 115 V | 2.2 VCT @ 0.05 A / 1.1 V @ 0.1 A (for ST-2-20) | 6 Pin | - |
| DST-2 | 1.1 | 1.37 x 1.12 x 0.97 | 0.17 (0.08 kg) | 115/230 V | 2.2 VCT @ 0.05 A / 1.1 V @ 0.1 A (for DST-2-20) | 8 Pin | - |
| ST-3 | 2.4 | 1.37 x 1.12 x 1.21 | 0.25 (0.11 kg) | 115 V | 3.3 VCT @ 0.11 A / 1.65 V @ 0.22 A (for ST-3-20) | 6 Pin | - |
| DST-3 | 2.4 | 1.37 x 1.12 x 1.21 | 0.25 (0.11 kg) | 115/230 V | 3.3 VCT @ 0.11 A / 1.65 V @ 0.22 A (for DST-3-20) | 8 Pin | - |
| ST-4 | 6 | 1.62 x 1.31 x 1.31 | 0.44 (0.20 kg) | 115 V | 6.6 VCT @ 0.27 A / 3.3 V @ 0.54 A (for ST-4-20) | 6 Pin | Nylon 4-40 x 1.37 |
| DST-4 | 6 | 1.62 x 1.31 x 1.31 | 0.44 (0.20 kg) | 115/230 V | 6.6 VCT @ 0.27 A / 3.3 V @ 0.54 A (for DST-4-20) | 8 Pin | Nylon 4-40 x 1.37 |
| ST-5 | 12 | 1.91 x 1.59 x 1.45 | 0.70 (0.32 kg) | 115 V | 11 VCT @ 0.55 A / 5.5 V @ 1.1 A (for ST-5-20) | 6 Pin | Nylon 4-40 x 1.37 |
| DST-5 | 12 | 1.91 x 1.59 x 1.45 | 0.70 (0.32 kg) | 115/230 V | 11 VCT @ 0.55 A / 5.5 V @ 1.1 A (for DST-5-20) | 8 Pin | Nylon 4-40 x 1.37 |
| ST-6 | 20 | 2.25 x 1.88 x 1.45 | 0.80 (0.36 kg) | 115 V | 15 VCT @ 0.67 A / 7.5 V @ 1.33 A (for ST-6-20) | 6 Pin | Nylon 4-40 x 1.37 |
| DST-6 | 20 | 2.25 x 1.88 x 1.45 | 0.80 (0.36 kg) | 115/230 V | 15 VCT @ 0.67 A / 7.5 V @ 1.33 A (for DST-6-20) | 8 Pin | Nylon 4-40 x 1.37 |
| ST-7 | 36 | 2.62 x 2.18 x 1.59 | 1.1 (0.50 kg) | 115 V | 25 VCT @ 0.72 A / 12.5 V @ 1.44 A (for ST-7-20) | 6 Pin | 4 mounting holes (#6 screws) |
| DST-7 | 36 | 2.62 x 2.18 x 1.59 | 1.1 (0.50 kg) | 115/230 V | 25 VCT @ 0.72 A / 12.5 V @ 1.44 A (for DST-7-20) | 8 Pin | 4 mounting holes (#6 screws) |
| General Specifications: | |||||||
| Power Range | 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) | ||||||
| Mounting Hardware Availability | Available from Signal (ST-MS screw, ST-MN nut) | ||||||
| Part Number Selection Examples: | |||||||
| Part Number | Secondary RMS Rating | Primary Voltage | Pin Count | Class Marking | Fuse Rating Reference | ||
| ST-2-10**# | 10 VCT @ 0.11 A / 5 V @ 0.22 A | 115 V | 6 Pin | Class 2 | **# | ||
| DST-2-10**# | 10 VCT @ 0.11 A / 5 V @ 0.22 A | 115/230 V | 8 Pin | Class 2 | **# | ||
| ST-3-10*# | 10 VCT @ 0.25 A / 5 V @ 0.5 A | 115 V | 6 Pin | Class 2 | *# | (5) | |
| DST-3-10*# | 10 VCT @ 0.25 A / 5 V @ 0.5 A | 115/230 V | 8 Pin | Class 2 | *# | (9) | |
| ST-6-10 | 10 VCT @ 2.0 A / 5 V @ 4.0 A | 115 V | 6 Pin | ||||
| DST-6-10 | 10 VCT @ 2.0 A / 5 V @ 4.0 A | 115/230 V | 8 Pin | ||||
| ST-7-12 | 12.6 VCT @ 2.85 A / 6.3 V @ 5.7 A | 115 V | 6 Pin | ||||
| DST-7-12 | 12.6 VCT @ 2.85 A / 6.3 V @ 5.7 A | 115/230 V | 8 Pin | ||||
| ST-2-16**# | 16 VCT @ 0.07 A / 8 V @ 0.14 A | 115 V | 6 Pin | Class 2 | **# | ||
| DST-2-16**# | 16 VCT @ 0.07 A / 8 V @ 0.14 A | 115/230 V | 8 Pin | Class 2 | **# | ||
| ST-4-16*# | 16 VCT @ 0.4 A / 8 V @ 0.8 A | 115 V | 6 Pin | Class 2 | *# | (7) | |
| DST-4-16*# | 16 VCT @ 0.4 A / 8 V @ 0.8 A | 115/230 V | 8 Pin | Class 2 | *# | (10) | |
| ST-7-16 | 16 VCT @ 2.25 A / 8 V @ 4.5 A | 115 V | 6 Pin | ||||
| DST-7-16 | 16 VCT @ 2.25 A / 8 V @ 4.5 A | 115/230 V | 8 Pin | ||||
| ST-2-120**# | 120 VCT @ 0.01 A / 60 V @ 0.02 A | 115 V | 6 Pin | Class 2 | **# | ||
| DST-2-120**# | 120 VCT @ 0.01 A / 60 V @ 0.02 A | 115/230 V | 8 Pin | Class 2 | **# | ||
| ST-7-120 | 120 VCT @ 0.3 A / 60 V @ 0.6 A | 115 V | 6 Pin | ||||
| DST-7-120 | 120 VCT @ 0.3 A / 60 V @ 0.6 A | 115/230 V | 8 Pin | ||||
| Recommended Secondary Fuse Values: 0.125 A, 0.15 A, 0.25 A, 0.3 A, 0.375 A, 0.4 A, 0.5 A, 0.6 A, 0.75 A, 1.0 A, 1.5 A, 2.0 A, 3.0 A | |||||||
2411272143_Bel-Fuse-ST-7-20_C17366564.pdf
Request A Quote
Please Use Our Online Inquiry Contact Form Below If You Have Any Questions, Our Team Will Get Back To You As Soon As Possible
