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Specifications
Secondary Winding:
2
Isolation Voltage(Vrms):
2.5kV
Primary Winding(s):
2
Secondary Side Voltage:
10V;20V
Output Current:
3.6A;1.8A
Primary Side Voltage:
115V;230V
Mfr. Part #:
DST-7-20
Package:
Through Hole-8P,66.7x55.5mm
Key Attributes
Model Number:
DST-7-20
Product Description
Product Overview
The 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 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, and are built with a Class F insulation system (155C).
Product Attributes
- Brand: Signal Transformer
- Series: ST / DST Series Split/Tran
- Construction: Split Bobbin with Dual Cavity Platform
- Insulation System: Class F (155C)
- 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, Class 2 marked with (*), (**), or (#)
- Compliance: RoHS Compliant
- Customization: Custom versions available upon request
Technical Specifications
| Part Number | Secondary RMS Rating (Series) | Secondary RMS Rating (Parallel) | Power (VA) | Primary Voltage | Pin Configuration | Dielectric Strength (Vrms Hipot) | Insulation System | Weight (lbs/kg) |
|---|---|---|---|---|---|---|---|---|
| ST-2-10**# / DST-2-10**# | 10 VCT @ 0.11 A | 5 V @ 0.22 A | 1.1 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.17 (0.08) |
| ST-3-10*# / DST-3-10*# | 10 VCT @ 0.25 A | 5 V @ 0.5 A | 2.4 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.25 (0.11) |
| ST-4-10*# / DST-4-10*# | 10 VCT @ 0.6 A | 5 V @ 1.2 A | 6 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.44 (0.20) |
| ST-5-10*# / DST-5-10*# | 10 VCT @ 1.2 A | 5 V @ 2.4 A | 12 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.70 (0.32) |
| ST-6-10 / DST-6-10 | 10 VCT @ 2.0 A | 5 V @ 4.0 A | 20 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.80 (0.36) |
| ST-7-10 / DST-7-10 | 10 VCT @ 3.6 A | 5 V @ 7.2 A | 36 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 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 | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.17 (0.08) |
| ST-3-12*# / DST-3-12*# | 12.6 VCT @ 0.2 A | 6.3 V @ 0.4 A | 2.4 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.25 (0.11) |
| ST-4-12*# / DST-4-12*# | 12.6 VCT @ 0.5 A | 6.3 V @ 1.0 A | 6 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.44 (0.20) |
| ST-5-12*# / DST-5-12*# | 12.6 VCT @ 1.0 A | 6.3 V @ 2.0 A | 12 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 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 | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 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 | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 1.1 (0.50) |
| ST-2-16**# / DST-2-16**# | 16 VCT @ 0.07 A | 8 V @ 0.14 A | 1.1 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.17 (0.08) |
| ST-3-16*# / DST-3-16*# | 16 VCT @ 0.15 A | 8 V @ 0.3 A | 2.4 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.25 (0.11) |
| ST-4-16*# / DST-4-16*# | 16 VCT @ 0.4 A | 8 V @ 0.8 A | 6 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.44 (0.20) |
| ST-5-16*# / DST-5-16*# | 16 VCT @ 0.8 A | 8 V @ 1.6 A | 12 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.70 (0.32) |
| ST-6-16 / DST-6-16 | 16 VCT @ 1.25 A | 8 V @ 2.5 A | 20 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.80 (0.36) |
| ST-7-16 / DST-7-16 | 16 VCT @ 2.25 A | 8 V @ 4.5 A | 36 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 1.1 (0.50) |
| ST-2-20**# / DST-2-20**# | 20 VCT @ 0.055 A | 10 V @ 0.11 A | 1.1 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.17 (0.08) |
| ST-3-20*# / DST-3-20*# | 20 VCT @ 0.12 A | 10 V @ 0.24 A | 2.4 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.25 (0.11) |
| ST-4-20*# / DST-4-20*# | 20 VCT @ 0.3 A | 10 V @ 0.6 A | 6 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.44 (0.20) |
| ST-5-20*# / DST-5-20*# | 20 VCT @ 0.6 A | 10 V @ 1.2 A | 12 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.70 (0.32) |
| ST-6-20 / DST-6-20 | 20 VCT @ 1.0 A | 10 V @ 2.0 A | 20 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.80 (0.36) |
| ST-7-20 / DST-7-20 | 20 VCT @ 1.8 A | 10 V @ 3.6 A | 36 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 1.1 (0.50) |
| ST-2-24**# / DST-2-24**# | 24 VCT @ 0.045 A | 12 V @ 0.09 A | 1.1 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.17 (0.08) |
| ST-3-24*# / DST-3-24*# | 24 VCT @ 0.1 A | 12 V @ 0.2 A | 2.4 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.25 (0.11) |
| ST-4-24*# / DST-4-24*# | 24 VCT @ 0.25 A | 12 V @ 0.5 A | 6 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.44 (0.20) |
| ST-5-24*# / DST-5-24*# | 24 VCT @ 0.5 A | 12 V @ 1.0 A | 12 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.70 (0.32) |
| ST-6-24 / DST-6-24 | 24 VCT @ 0.8 A | 12 V @ 1.6 A | 20 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.80 (0.36) |
| ST-7-24 / DST-7-24 | 24 VCT @ 1.5 A | 12 V @ 3.0 A | 36 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 1.1 (0.50) |
| ST-2-28 / DST-2-28 | 28 VCT @ 0.04 A | 14 V @ 0.08 A | 1.1 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.17 (0.08) |
| ST-3-28 / DST-3-28 | 28 VCT @ 0.085 A | 14 V @ 0.17 A | 2.4 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.25 (0.11) |
| ST-4-28 / DST-4-28 | 28 VCT @ 0.2 A | 14 V @ 0.4 A | 6 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.44 (0.20) |
| ST-5-28 / DST-5-28 | 28 VCT @ 0.42 A | 14 V @ 0.84 A | 12 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.70 (0.32) |
| ST-6-28 / DST-6-28 | 28 VCT @ 0.7 A | 14 V @ 1.4 A | 20 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.80 (0.36) |
| ST-7-28 / DST-7-28 | 28 VCT @ 1.3 A | 14 V @ 2.6 A | 36 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 1.1 (0.50) |
| ST-2-36 / DST-2-36 | 36 VCT @ 0.03 A | 18 V @ 0.06 A | 1.1 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.17 (0.08) |
| ST-3-36 / DST-3-36 | 36 VCT @ 0.065 A | 18 V @ 0.13 A | 2.4 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.25 (0.11) |
| ST-4-36 / DST-4-36 | 36 VCT @ 0.17 A | 18 V @ 0.34 A | 6 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.44 (0.20) |
| ST-5-36 / DST-5-36 | 36 VCT @ 0.35 A | 18 V @ 0.7 A | 12 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.70 (0.32) |
| ST-6-36 / DST-6-36 | 36 VCT @ 0.55 A | 18 V @ 1.1 A | 20 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.80 (0.36) |
| ST-7-36 / DST-7-36 | 36 VCT @ 1.0 A | 18 V @ 2.0 A | 36 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 1.1 (0.50) |
| ST-2-48 / DST-2-48 | 48 VCT @ 0.023 A | 24 V @ 0.046 A | 1.1 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.17 (0.08) |
| ST-3-48 / DST-3-48 | 48 VCT @ 0.05 A | 24 V @ 0.1 A | 2.4 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.25 (0.11) |
| ST-4-48 / DST-4-48 | 48 VCT @ 0.125 A | 24 V @ 0.25 A | 6 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.44 (0.20) |
| ST-5-48 / DST-5-48 | 48 VCT @ 0.25 A | 24 V @ 0.5 A | 12 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.70 (0.32) |
| ST-6-48 / DST-6-48 | 48 VCT @ 0.4 A | 24 V @ 0.8 A | 20 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.80 (0.36) |
| ST-7-48 / DST-7-48 | 48 VCT @ 0.75 A | 24 V @ 1.5 A | 36 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 1.1 (0.50) |
| ST-2-56 / DST-2-56 | 56 VCT @ 0.02 A | 28 V @ 0.04 A | 1.1 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.17 (0.08) |
| ST-3-56 / DST-3-56 | 56 VCT @ 0.045 A | 28 V @ 0.09 A | 2.4 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.25 (0.11) |
| ST-4-56 / DST-4-56 | 56 VCT @ 0.11 A | 28 V @ 0.22 A | 6 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.44 (0.20) |
| ST-5-56 / DST-5-56 | 56 VCT @ 0.22 A | 28 V @ 0.44 A | 12 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.70 (0.32) |
| ST-6-56 / DST-6-56 | 56 VCT @ 0.35 A | 28 V @ 0.7 A | 20 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.80 (0.36) |
| ST-7-56 / DST-7-56 | 56 VCT @ 0.65 A | 28 V @ 1.3 A | 36 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 1.1 (0.50) |
| ST-2-120 / DST-2-120 | 120 VCT @ 0.01 A | 60 V @ 0.02 A | 1.1 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.17 (0.08) |
| ST-3-120 / DST-3-120 | 120 VCT @ 0.02 A | 60 V @ 0.04 A | 2.4 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.25 (0.11) |
| ST-4-120 / DST-4-120 | 120 VCT @ 0.05 A | 60 V @ 0.1 A | 6 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.44 (0.20) |
| ST-5-120 / DST-5-120 | 120 VCT @ 0.1 A | 60 V @ 0.2 A | 12 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.70 (0.32) |
| ST-6-120 / DST-6-120 | 120 VCT @ 0.16 A | 60 V @ 0.32 A | 20 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 0.80 (0.36) |
| ST-7-120 / DST-7-120 | 120 VCT @ 0.3 A | 60 V @ 0.6 A | 36 | 115 V | 6 Pin (ST) / 8 Pin (DST) | 2500 | Class F (155C) | 1.1 (0.50) |
| General Specifications: Primaries: Single or dual primaries, 115 V or 115/230 V, 50/60 Hz. Electrostatic Shield: Not necessary due to split bobbin construction. Mounting Hardware: See chart. | ||||||||
| Mechanical Specifications (Size 4): L: 1.62" (41.3mm), W: 1.31" (33.3mm), H: 1.31" (33.3mm), ML: 1.06" (26.9mm), A: 0.25" (6.4mm), B: 0.35" (8.9mm), C: 1.25" (31.8mm). Optional Mounting Screw & Nut: Nylon 4-40 x 1.37" (4-40 x 34.9mm). | ||||||||
| Mechanical Specifications (Size 5): L: 1.91" (48.4mm), W: 1.59" (40.4mm), H: 1.45" (36.9mm), ML: 1.25" (31.8mm), A: 0.30" (7.6mm), B: 0.40" (10.2mm), C: 1.41" (35.8mm). Optional Mounting Screw & Nut: Nylon 4-40 x 1.37" (4-40 x 34.9mm). | ||||||||
| Mechanical Specifications (Size 6): L: 2.25" (57.2mm), W: 1.88" (47.8mm), H: 1.45" (36.9mm), ML: 1.50" (38.1mm), A: 0.30" (7.6mm), B: 0.40" (10.2mm), C: 1.60" (40.6mm). Optional Mounting Screw & Nut: Nylon 4-40 x 1.37" (4-40 x 34.9mm). | ||||||||
| Mechanical Specifications (Size 7): L: 2.62" (66.7mm), W: 2.18" (55.5mm), H: 1.59" (40.4mm), A: 0.40" (10.2mm), B: 0.40" (10.2mm), C: 1.85" (47.0mm). Mounting: 4 mounting holes on 2.18" x 1.75" centers for #6 screws. Available mounting hardware: ST-MS (screw) and ST-MN (nut). | ||||||||
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.
Note: Specifications are subject to change without notice. See Accessories datasheet for mounting screw information.
2411272143_Bel-Fuse-DST-7-20_C17392267.pdf
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