<
>
Specifications
Secondary Winding:
2
Isolation Voltage(Vrms):
2.5kV
Primary Winding(s):
1
Secondary Side Voltage:
8V;16V
Output Current:
4.5A;2.25A
Primary Side Voltage:
115V
Mfr. Part #:
ST-7-16
Package:
Through Hole-6P,66.7x55.5mm
Key Attributes
Model Number:
ST-7-16
Product Description
Bel Fuse Signal ST/DST Series Split Bobbin Transformers
Product Overview
The Bel Fuse Signal ST and DST Series Split/Tran Specialty Purpose & Class 2 Transformers are designed with a dual cavity platform, offering superior isolation and low capacitive coupling. These split bobbin transformers feature rigid pin construction for enhanced board insertion reliability. They are suitable for a wide range of power applications from 1.1 VA to 36 VA, with single or dual primaries and series or parallel secondaries. The inherent split bobbin construction eliminates the need for an electrostatic shield, and they are built with a Class F, 155C insulation system.
Product Attributes
- Brand: Bel Fuse Signal
- Series: ST / DST Series Split/Tran
- Type: Specialty Purpose & Class 2 Transformers, Split Bobbin
- Insulation System: Class F, 155C
- 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
- Compliance: RoHS Compliant
- Customization: Custom versions available upon request.
Technical Specifications
| Part Number | Secondary RMS Rating (Series) | Secondary RMS Rating (Parallel) | VA Rating | Primary Voltage | Frequency | Dielectric Strength | Insulation System | Dimensions (L x W x H) | Weight (lbs/kg) |
|---|---|---|---|---|---|---|---|---|---|
| ST-2-10**# / DST-2-10**# | 10 VCT @ 0.11 A | 5 V @ 0.22 A | 1.1 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) in (mm) | 0.17 (0.08) |
| ST-3-10*# / DST-3-10*# | 10 VCT @ 0.25 A (5) | 5 V @ 0.5 A (9) | 2.4 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) in (mm) | 0.25 (0.11) |
| ST-4-10*# / DST-4-10*# | 10 VCT @ 0.6 A (9) | 5 V @ 1.2 A (11) | 6 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) in (mm) | 0.44 (0.20) |
| ST-5-10*# / DST-5-10*# | 10 VCT @ 1.2 A (11) | 5 V @ 2.4 A (13) | 12 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) in (mm) | 0.70 (0.32) |
| ST-6-10 / DST-6-10 | 10 VCT @ 2.0 A | 5 V @ 4.0 A | 20 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) in (mm) | 0.80 (0.36) |
| ST-7-10 / DST-7-10 | 10 VCT @ 3.6 A | 5 V @ 7.2 A | 36 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) in (mm) | 1.1 (0.50) |
| ST-2-12**# / DST-2-12**# | 12.6 VCT @ 0.09 A | 6.3 V @ 0.18 A | 1.1 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) in (mm) | 0.17 (0.08) |
| ST-3-12*# / DST-3-12*# | 12.6 VCT @ 0.2 A (4) | 6.3 V @ 0.4 A (8) | 2.4 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) in (mm) | 0.25 (0.11) |
| ST-4-12*# / DST-4-12*# | 12.6 VCT @ 0.5 A (9) | 6.3 V @ 1.0 A (11) | 6 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) in (mm) | 0.44 (0.20) |
| ST-5-12*# / DST-5-12*# | 12.6 VCT @ 1.0 A (11) | 6.3 V @ 2.0 A (13) | 12 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) in (mm) | 0.70 (0.32) |
| ST-6-12 / DST-6-12 | 12.6 VCT @ 1.6 A | 6.3 V @ 3.2 A | 20 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) in (mm) | 0.80 (0.36) |
| ST-7-12 / DST-7-12 | 12.6 VCT @ 2.85 A | 6.3 V @ 5.7 A | 36 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) in (mm) | 1.1 (0.50) |
| ST-2-16**# / DST-2-16**# | 16 VCT @ 0.07 A | 8 V @ 0.14 A | 1.1 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) in (mm) | 0.17 (0.08) |
| ST-3-16*# / DST-3-16*# | 16 VCT @ 0.15 A (3) | 8 V @ 0.3 A (6) | 2.4 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) in (mm) | 0.25 (0.11) |
| ST-4-16*# / DST-4-16*# | 16 VCT @ 0.4 A (7) | 8 V @ 0.8 A (10) | 6 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) in (mm) | 0.44 (0.20) |
| ST-5-16*# / DST-5-16*# | 16 VCT @ 0.8 A (10) | 8 V @ 1.6 A (12) | 12 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) in (mm) | 0.70 (0.32) |
| ST-6-16 / DST-6-16 | 16 VCT @ 1.25 A | 8 V @ 2.5 A | 20 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) in (mm) | 0.80 (0.36) |
| ST-7-16 / DST-7-16 | 16 VCT @ 2.25 A | 8 V @ 4.5 A | 36 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) in (mm) | 1.1 (0.50) |
| ST-2-20**# / DST-2-20**# | 20 VCT @ 0.055 A | 10 V @ 0.11 A | 1.1 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) in (mm) | 0.17 (0.08) |
| ST-3-20*# / DST-3-20*# | 20 VCT @ 0.12 A (2) | 10 V @ 0.24 A (5) | 2.4 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) in (mm) | 0.25 (0.11) |
| ST-4-20*# / DST-4-20*# | 20 VCT @ 0.3 A (6) | 10 V @ 0.6 A (9) | 6 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) in (mm) | 0.44 (0.20) |
| ST-5-20*# / DST-5-20*# | 20 VCT @ 0.6 A (9) | 10 V @ 1.2 A (11) | 12 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) in (mm) | 0.70 (0.32) |
| ST-6-20 / DST-6-20 | 20 VCT @ 1.0 A | 10 V @ 2.0 A | 20 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) in (mm) | 0.80 (0.36) |
| ST-7-20 / DST-7-20 | 20 VCT @ 1.8 A | 10 V @ 3.6 A | 36 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) in (mm) | 1.1 (0.50) |
| ST-2-24**# / DST-2-24**# | 24 VCT @ 0.045 A | 12 V @ 0.09 A | 1.1 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) in (mm) | 0.17 (0.08) |
| ST-3-24*# / DST-3-24*# | 24 VCT @ 0.1 A (1) | 12 V @ 0.2 A (4) | 2.4 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) in (mm) | 0.25 (0.11) |
| ST-4-24*# / DST-4-24*# | 24 VCT @ 0.25 A (5) | 12 V @ 0.5 A (9) | 6 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) in (mm) | 0.44 (0.20) |
| ST-5-24*# / DST-5-24*# | 24 VCT @ 0.5 A (9) | 12 V @ 1.0 A (11) | 12 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) in (mm) | 0.70 (0.32) |
| ST-6-24 / DST-6-24 | 24 VCT @ 0.8 A | 12 V @ 1.6 A | 20 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) in (mm) | 0.80 (0.36) |
| ST-7-24 / DST-7-24 | 24 VCT @ 1.5 A | 12 V @ 3.0 A | 36 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) in (mm) | 1.1 (0.50) |
| ST-2-28 / DST-2-28 | 28 VCT @ 0.04 A | 14 V @ 0.08 A | 1.1 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) in (mm) | 0.17 (0.08) |
| ST-3-28 / DST-3-28 | 28 VCT @ 0.085 A | 14 V @ 0.17 A | 2.4 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) in (mm) | 0.25 (0.11) |
| ST-4-28 / DST-4-28 | 28 VCT @ 0.2 A | 14 V @ 0.4 A | 6 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) in (mm) | 0.44 (0.20) |
| ST-5-28 / DST-5-28 | 28 VCT @ 0.42 A | 14 V @ 0.84 A | 12 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) in (mm) | 0.70 (0.32) |
| ST-6-28 / DST-6-28 | 28 VCT @ 0.7 A | 14 V @ 1.4 A | 20 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) in (mm) | 0.80 (0.36) |
| ST-7-28 / DST-7-28 | 28 VCT @ 1.3 A | 14 V @ 2.6 A | 36 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) in (mm) | 1.1 (0.50) |
| ST-2-36 / DST-2-36 | 36 VCT @ 0.03 A | 18 V @ 0.06 A | 1.1 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) in (mm) | 0.17 (0.08) |
| ST-3-36 / DST-3-36 | 36 VCT @ 0.065 A | 18 V @ 0.13 A | 2.4 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) in (mm) | 0.25 (0.11) |
| ST-4-36 / DST-4-36 | 36 VCT @ 0.17 A | 18 V @ 0.34 A | 6 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) in (mm) | 0.44 (0.20) |
| ST-5-36 / DST-5-36 | 36 VCT @ 0.35 A | 18 V @ 0.7 A | 12 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) in (mm) | 0.70 (0.32) |
| ST-6-36 / DST-6-36 | 36 VCT @ 0.55 A | 18 V @ 1.1 A | 20 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) in (mm) | 0.80 (0.36) |
| ST-7-36 / DST-7-36 | 36 VCT @ 1.0 A | 18 V @ 2.0 A | 36 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) in (mm) | 1.1 (0.50) |
| ST-2-48 / DST-2-48 | 48 VCT @ 0.023 A | 24 V @ 0.046 A | 1.1 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) in (mm) | 0.17 (0.08) |
| ST-3-48 / DST-3-48 | 48 VCT @ 0.05 A | 24 V @ 0.1 A | 2.4 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) in (mm) | 0.25 (0.11) |
| ST-4-48 / DST-4-48 | 48 VCT @ 0.125 A | 24 V @ 0.25 A | 6 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) in (mm) | 0.44 (0.20) |
| ST-5-48 / DST-5-48 | 48 VCT @ 0.25 A | 24 V @ 0.5 A | 12 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) in (mm) | 0.70 (0.32) |
| ST-6-48 / DST-6-48 | 48 VCT @ 0.4 A | 24 V @ 0.8 A | 20 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) in (mm) | 0.80 (0.36) |
| ST-7-48 / DST-7-48 | 48 VCT @ 0.75 A | 24 V @ 1.5 A | 36 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) in (mm) | 1.1 (0.50) |
| ST-2-56 / DST-2-56 | 56 VCT @ 0.02 A | 28 V @ 0.04 A | 1.1 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) in (mm) | 0.17 (0.08) |
| ST-3-56 / DST-3-56 | 56 VCT @ 0.045 A | 28 V @ 0.09 A | 2.4 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) in (mm) | 0.25 (0.11) |
| ST-4-56 / DST-4-56 | 56 VCT @ 0.11 A | 28 V @ 0.22 A | 6 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) in (mm) | 0.44 (0.20) |
| ST-5-56 / DST-5-56 | 56 VCT @ 0.22 A | 28 V @ 0.44 A | 12 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) in (mm) | 0.70 (0.32) |
| ST-6-56 / DST-6-56 | 56 VCT @ 0.35 A | 28 V @ 0.7 A | 20 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) in (mm) | 0.80 (0.36) |
| ST-7-56 / DST-7-56 | 56 VCT @ 0.65A | 28 V @ 1.3 A | 36 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) in (mm) | 1.1 (0.50) |
| ST-2-120 / DST-2-120 | 120 VCT @ 0.01 A | 60 V @ 0.02 A | 1.1 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) in (mm) | 0.17 (0.08) |
| ST-3-120 / DST-3-120 | 120 VCT @ 0.02 A | 60 V @ 0.04 A | 2.4 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) in (mm) | 0.25 (0.11) |
| ST-4-120 / DST-4-120 | 120 VCT @ 0.05 A | 60 V @ 0.1 A | 6 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) in (mm) | 0.44 (0.20) |
| ST-5-120 / DST-5-120 | 120 VCT @ 0.1 A | 60 V @ 0.2 A | 12 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) in (mm) | 0.70 (0.32) |
| ST-6-120 / DST-6-120 | 120 VCT @ 0.16 A | 60 V @ 0.32 A | 20 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) in (mm) | 0.80 (0.36) |
| ST-7-120 / DST-7-120 | 120 VCT @ 0.3 A | 60 V @ 0.6 A | 36 | 115 V | 50/60 Hz | 2500 Vrms Hipot | Class F, 155C | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) in (mm) | 1.1 (0.50) |
Note on Pin Configuration:
6 Pin Type ST: 115 V, 50/60 Hz. Polarity indicated by numbers 1, 5, 6, 8, 7, 4.
8 Pin Type DST: 115/230 V, 50/60 Hz. Polarity indicated by numbers 1, 5, 6, 8, 7, 3, 4, 2.
Recommended Secondary Fuse 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.
Mounting Hardware: See Accessories datasheet for mounting screw information. Optional Mounting Screw & Nut 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.
2411272143_Bel-Fuse-ST-7-16_C17323158.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
