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Specifications
Secondary Winding:
2
Isolation Voltage(Vrms):
2.5kV
Primary Winding(s):
1
Secondary Side Voltage:
12V;24V
Output Current:
500mA;250mA
Primary Side Voltage:
115V
Mfr. Part #:
ST-4-24
Package:
Through Hole-6P,41.3x33.3mm
Key Attributes
Model Number:
ST-4-24
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. These transformers 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 (155 C).
Product Attributes
- Brand: Signal Transformer (Bel Fuse)
- Series: ST / DST Series Split/Tran
- Construction: Split Bobbin with Dual Cavity
- Insulation System: Class F (155 C)
- 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
- Compliance: RoHS Compliant
- Customization: Custom versions available upon request.
Technical Specifications
| Part Number | Secondary RMS Rating (Series) | Secondary RMS Rating (Parallel) | Power (VA) | Pin Configuration | 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 | 6 Pin (ST) / 8 Pin (DST) | 1.37" (34.9mm) x 1.12" (28.6mm) x 0.97" (24.6mm) | 0.17 (0.08) |
| ST-3-10*# / DST-3-10*# | 10 VCT @ 0.25 A | 5 V @ 0.5 A | 2.4 | 6 Pin (ST) / 8 Pin (DST) | 1.37" (34.9mm) x 1.12" (28.6mm) x 1.21" (30.8mm) | 0.25 (0.11) |
| ST-4-10*# / DST-4-10*# | 10 VCT @ 0.6 A | 5 V @ 1.2 A | 6 | 6 Pin (ST) / 8 Pin (DST) | 1.62" (41.3mm) x 1.31" (33.3mm) x 1.31" (33.3mm) | 0.44 (0.20) |
| ST-5-10*# / DST-5-10*# | 10 VCT @ 1.2 A | 5 V @ 2.4 A | 12 | 6 Pin (ST) / 8 Pin (DST) | 1.91" (48.4mm) x 1.59" (40.4mm) x 1.45" (36.9mm) | 0.70 (0.32) |
| ST-6-10 / DST-6-10 | 10 VCT @ 2.0 A | 5 V @ 4.0 A | 20 | 6 Pin (ST) / 8 Pin (DST) | 2.25" (57.2mm) x 1.88" (47.8mm) x 1.45" (36.9mm) | 0.80 (0.36) |
| ST-7-10 / DST-7-10 | 10 VCT @ 3.6 A | 5 V @ 7.2 A | 36 | 6 Pin (ST) / 8 Pin (DST) | 2.62" (66.7mm) x 2.18" (55.5mm) x 1.59" (40.4mm) | 1.1 (0.50) |
| ST-2-12**# / DST-2-12**# | 12.6 VCT @ 0.09 A | 6.3 V @ 0.18 A | 1.1 | 6 Pin (ST) / 8 Pin (DST) | 1.37" (34.9mm) x 1.12" (28.6mm) x 0.97" (24.6mm) | 0.17 (0.08) |
| ST-3-12*# / DST-3-12*# | 12.6 VCT @ 0.2 A | 6.3 V @ 0.4 A | 2.4 | 6 Pin (ST) / 8 Pin (DST) | 1.37" (34.9mm) x 1.12" (28.6mm) x 1.21" (30.8mm) | 0.25 (0.11) |
| ST-4-12*# / DST-4-12*# | 12.6 VCT @ 0.5 A | 6.3 V @ 1.0 A | 6 | 6 Pin (ST) / 8 Pin (DST) | 1.62" (41.3mm) x 1.31" (33.3mm) x 1.31" (33.3mm) | 0.44 (0.20) |
| ST-5-12*# / DST-5-12*# | 12.6 VCT @ 1.0 A | 6.3 V @ 2.0 A | 12 | 6 Pin (ST) / 8 Pin (DST) | 1.91" (48.4mm) x 1.59" (40.4mm) x 1.45" (36.9mm) | 0.70 (0.32) |
| ST-6-12 / DST-6-12 | 12.6 VCT @ 1.6 A | 6.3 V @ 3.2 A | 20 | 6 Pin (ST) / 8 Pin (DST) | 2.25" (57.2mm) x 1.88" (47.8mm) x 1.45" (36.9mm) | 0.80 (0.36) |
| ST-7-12 / DST-7-12 | 12.6 VCT @ 2.85 A | 6.3 V @ 5.7 A | 36 | 6 Pin (ST) / 8 Pin (DST) | 2.62" (66.7mm) x 2.18" (55.5mm) x 1.59" (40.4mm) | 1.1 (0.50) |
| ST-2-16**# / DST-2-16**# | 16 VCT @ 0.07 A | 8 V @ 0.14 A | 1.1 | 6 Pin (ST) / 8 Pin (DST) | 1.37" (34.9mm) x 1.12" (28.6mm) x 0.97" (24.6mm) | 0.17 (0.08) |
| ST-3-16*# / DST-3-16*# | 16 VCT @ 0.15 A | 8 V @ 0.3 A | 2.4 | 6 Pin (ST) / 8 Pin (DST) | 1.37" (34.9mm) x 1.12" (28.6mm) x 1.21" (30.8mm) | 0.25 (0.11) |
| ST-4-16*# / DST-4-16*# | 16 VCT @ 0.4 A | 8 V @ 0.8 A | 6 | 6 Pin (ST) / 8 Pin (DST) | 1.62" (41.3mm) x 1.31" (33.3mm) x 1.31" (33.3mm) | 0.44 (0.20) |
| ST-5-16*# / DST-5-16*# | 16 VCT @ 0.8 A | 8 V @ 1.6 A | 12 | 6 Pin (ST) / 8 Pin (DST) | 1.91" (48.4mm) x 1.59" (40.4mm) x 1.45" (36.9mm) | 0.70 (0.32) |
| ST-6-16 / DST-6-16 | 16 VCT @ 1.25 A | 8 V @ 2.5 A | 20 | 6 Pin (ST) / 8 Pin (DST) | 2.25" (57.2mm) x 1.88" (47.8mm) x 1.45" (36.9mm) | 0.80 (0.36) |
| ST-7-16 / DST-7-16 | 16 VCT @ 2.25 A | 8 V @ 4.5 A | 36 | 6 Pin (ST) / 8 Pin (DST) | 2.62" (66.7mm) x 2.18" (55.5mm) x 1.59" (40.4mm) | 1.1 (0.50) |
| ST-2-20**# / DST-2-20**# | 20 VCT @ 0.055 A | 10 V @ 0.11 A | 1.1 | 6 Pin (ST) / 8 Pin (DST) | 1.37" (34.9mm) x 1.12" (28.6mm) x 0.97" (24.6mm) | 0.17 (0.08) |
| ST-3-20*# / DST-3-20*# | 20 VCT @ 0.12 A | 10 V @ 0.24 A | 2.4 | 6 Pin (ST) / 8 Pin (DST) | 1.37" (34.9mm) x 1.12" (28.6mm) x 1.21" (30.8mm) | 0.25 (0.11) |
| ST-4-20*# / DST-4-20*# | 20 VCT @ 0.3 A | 10 V @ 0.6 A | 6 | 6 Pin (ST) / 8 Pin (DST) | 1.62" (41.3mm) x 1.31" (33.3mm) x 1.31" (33.3mm) | 0.44 (0.20) |
| ST-5-20*# / DST-5-20*# | 20 VCT @ 0.6 A | 10 V @ 1.2 A | 12 | 6 Pin (ST) / 8 Pin (DST) | 1.91" (48.4mm) x 1.59" (40.4mm) x 1.45" (36.9mm) | 0.70 (0.32) |
| ST-6-20 / DST-6-20 | 20 VCT @ 1.0 A | 10 V @ 2.0 A | 20 | 6 Pin (ST) / 8 Pin (DST) | 2.25" (57.2mm) x 1.88" (47.8mm) x 1.45" (36.9mm) | 0.80 (0.36) |
| ST-7-20 / DST-7-20 | 20 VCT @ 1.8 A | 10 V @ 3.6 A | 36 | 6 Pin (ST) / 8 Pin (DST) | 2.62" (66.7mm) x 2.18" (55.5mm) x 1.59" (40.4mm) | 1.1 (0.50) |
| ST-2-24**# / DST-2-24**# | 24 VCT @ 0.045 A | 12 V @ 0.09 A | 1.1 | 6 Pin (ST) / 8 Pin (DST) | 1.37" (34.9mm) x 1.12" (28.6mm) x 0.97" (24.6mm) | 0.17 (0.08) |
| ST-3-24*# / DST-3-24*# | 24 VCT @ 0.1 A | 12 V @ 0.2 A | 2.4 | 6 Pin (ST) / 8 Pin (DST) | 1.37" (34.9mm) x 1.12" (28.6mm) x 1.21" (30.8mm) | 0.25 (0.11) |
| ST-4-24*# / DST-4-24*# | 24 VCT @ 0.25 A | 12 V @ 0.5 A | 6 | 6 Pin (ST) / 8 Pin (DST) | 1.62" (41.3mm) x 1.31" (33.3mm) x 1.31" (33.3mm) | 0.44 (0.20) |
| ST-5-24*# / DST-5-24*# | 24 VCT @ 0.5 A | 12 V @ 1.0 A | 12 | 6 Pin (ST) / 8 Pin (DST) | 1.91" (48.4mm) x 1.59" (40.4mm) x 1.45" (36.9mm) | 0.70 (0.32) |
| ST-6-24 / DST-6-24 | 24 VCT @ 0.8 A | 12 V @ 1.6 A | 20 | 6 Pin (ST) / 8 Pin (DST) | 2.25" (57.2mm) x 1.88" (47.8mm) x 1.45" (36.9mm) | 0.80 (0.36) |
| ST-7-24 / DST-7-24 | 24 VCT @ 1.5 A | 12 V @ 3.0 A | 36 | 6 Pin (ST) / 8 Pin (DST) | 2.62" (66.7mm) x 2.18" (55.5mm) x 1.59" (40.4mm) | 1.1 (0.50) |
| ST-2-28 / DST-2-28 | 28 VCT @ 0.04 A | 14 V @ 0.08 A | 1.1 | 6 Pin (ST) / 8 Pin (DST) | 1.37" (34.9mm) x 1.12" (28.6mm) x 0.97" (24.6mm) | 0.17 (0.08) |
| ST-3-28 / DST-3-28 | 28 VCT @ 0.085 A | 14 V @ 0.17 A | 2.4 | 6 Pin (ST) / 8 Pin (DST) | 1.37" (34.9mm) x 1.12" (28.6mm) x 1.21" (30.8mm) | 0.25 (0.11) |
| ST-4-28 / DST-4-28 | 28 VCT @ 0.2 A | 14 V @ 0.4 A | 6 | 6 Pin (ST) / 8 Pin (DST) | 1.62" (41.3mm) x 1.31" (33.3mm) x 1.31" (33.3mm) | 0.44 (0.20) |
| ST-5-28 / DST-5-28 | 28 VCT @ 0.42 A | 14 V @ 0.84 A | 12 | 6 Pin (ST) / 8 Pin (DST) | 1.91" (48.4mm) x 1.59" (40.4mm) x 1.45" (36.9mm) | 0.70 (0.32) |
| ST-6-28 / DST-6-28 | 28 VCT @ 0.7 A | 14 V @ 1.4 A | 20 | 6 Pin (ST) / 8 Pin (DST) | 2.25" (57.2mm) x 1.88" (47.8mm) x 1.45" (36.9mm) | 0.80 (0.36) |
| ST-7-28 / DST-7-28 | 28 VCT @ 1.3 A | 14 V @ 2.6 A | 36 | 6 Pin (ST) / 8 Pin (DST) | 2.62" (66.7mm) x 2.18" (55.5mm) x 1.59" (40.4mm) | 1.1 (0.50) |
| ST-2-36 / DST-2-36 | 36 VCT @ 0.03 A | 18 V @ 0.06 A | 1.1 | 6 Pin (ST) / 8 Pin (DST) | 1.37" (34.9mm) x 1.12" (28.6mm) x 0.97" (24.6mm) | 0.17 (0.08) |
| ST-3-36 / DST-3-36 | 36 VCT @ 0.065 A | 18 V @ 0.13 A | 2.4 | 6 Pin (ST) / 8 Pin (DST) | 1.37" (34.9mm) x 1.12" (28.6mm) x 1.21" (30.8mm) | 0.25 (0.11) |
| ST-4-36 / DST-4-36 | 36 VCT @ 0.17 A | 18 V @ 0.34 A | 6 | 6 Pin (ST) / 8 Pin (DST) | 1.62" (41.3mm) x 1.31" (33.3mm) x 1.31" (33.3mm) | 0.44 (0.20) |
| ST-5-36 / DST-5-36 | 36 VCT @ 0.35 A | 18 V @ 0.7 A | 12 | 6 Pin (ST) / 8 Pin (DST) | 1.91" (48.4mm) x 1.59" (40.4mm) x 1.45" (36.9mm) | 0.70 (0.32) |
| ST-6-36 / DST-6-36 | 36 VCT @ 0.55 A | 18 V @ 1.1 A | 20 | 6 Pin (ST) / 8 Pin (DST) | 2.25" (57.2mm) x 1.88" (47.8mm) x 1.45" (36.9mm) | 0.80 (0.36) |
| ST-7-36 / DST-7-36 | 36 VCT @ 1.0 A | 18 V @ 2.0 A | 36 | 6 Pin (ST) / 8 Pin (DST) | 2.62" (66.7mm) x 2.18" (55.5mm) x 1.59" (40.4mm) | 1.1 (0.50) |
| ST-2-48 / DST-2-48 | 48 VCT @ 0.023 A | 24 V @ 0.046 A | 1.1 | 6 Pin (ST) / 8 Pin (DST) | 1.37" (34.9mm) x 1.12" (28.6mm) x 0.97" (24.6mm) | 0.17 (0.08) |
| ST-3-48 / DST-3-48 | 48 VCT @ 0.05 A | 24 V @ 0.1 A | 2.4 | 6 Pin (ST) / 8 Pin (DST) | 1.37" (34.9mm) x 1.12" (28.6mm) x 1.21" (30.8mm) | 0.25 (0.11) |
| ST-4-48 / DST-4-48 | 48 VCT @ 0.125 A | 24 V @ 0.25 A | 6 | 6 Pin (ST) / 8 Pin (DST) | 1.62" (41.3mm) x 1.31" (33.3mm) x 1.31" (33.3mm) | 0.44 (0.20) |
| ST-5-48 / DST-5-48 | 48 VCT @ 0.25 A | 24 V @ 0.5 A | 12 | 6 Pin (ST) / 8 Pin (DST) | 1.91" (48.4mm) x 1.59" (40.4mm) x 1.45" (36.9mm) | 0.70 (0.32) |
| ST-6-48 / DST-6-48 | 48 VCT @ 0.4 A | 24 V @ 0.8 A | 20 | 6 Pin (ST) / 8 Pin (DST) | 2.25" (57.2mm) x 1.88" (47.8mm) x 1.45" (36.9mm) | 0.80 (0.36) |
| ST-7-48 / DST-7-48 | 48 VCT @ 0.75 A | 24 V @ 1.5 A | 36 | 6 Pin (ST) / 8 Pin (DST) | 2.62" (66.7mm) x 2.18" (55.5mm) x 1.59" (40.4mm) | 1.1 (0.50) |
| ST-2-56 / DST-2-56 | 56 VCT @ 0.02 A | 28 V @ 0.04 A | 1.1 | 6 Pin (ST) / 8 Pin (DST) | 1.37" (34.9mm) x 1.12" (28.6mm) x 0.97" (24.6mm) | 0.17 (0.08) |
| ST-3-56 / DST-3-56 | 56 VCT @ 0.045 A | 28 V @ 0.09 A | 2.4 | 6 Pin (ST) / 8 Pin (DST) | 1.37" (34.9mm) x 1.12" (28.6mm) x 1.21" (30.8mm) | 0.25 (0.11) |
| ST-4-56 / DST-4-56 | 56 VCT @ 0.11 A | 28 V @ 0.22 A | 6 | 6 Pin (ST) / 8 Pin (DST) | 1.62" (41.3mm) x 1.31" (33.3mm) x 1.31" (33.3mm) | 0.44 (0.20) |
| ST-5-56 / DST-5-56 | 56 VCT @ 0.22 A | 28 V @ 0.44 A | 12 | 6 Pin (ST) / 8 Pin (DST) | 1.91" (48.4mm) x 1.59" (40.4mm) x 1.45" (36.9mm) | 0.70 (0.32) |
| ST-6-56 / DST-6-56 | 56 VCT @ 0.35 A | 28 V @ 0.7 A | 20 | 6 Pin (ST) / 8 Pin (DST) | 2.25" (57.2mm) x 1.88" (47.8mm) x 1.45" (36.9mm) | 0.80 (0.36) |
| ST-7-56 / DST-7-56 | 56 VCT @ 0.65 A | 28 V @ 1.3 A | 36 | 6 Pin (ST) / 8 Pin (DST) | 2.62" (66.7mm) x 2.18" (55.5mm) x 1.59" (40.4mm) | 1.1 (0.50) |
| ST-2-120 / DST-2-120 | 120 VCT @ 0.01 A | 60 V @ 0.02 A | 1.1 | 6 Pin (ST) / 8 Pin (DST) | 1.37" (34.9mm) x 1.12" (28.6mm) x 0.97" (24.6mm) | 0.17 (0.08) |
| ST-3-120 / DST-3-120 | 120 VCT @ 0.02 A | 60 V @ 0.04 A | 2.4 | 6 Pin (ST) / 8 Pin (DST) | 1.37" (34.9mm) x 1.12" (28.6mm) x 1.21" (30.8mm) | 0.25 (0.11) |
| ST-4-120 / DST-4-120 | 120 VCT @ 0.05 A | 60 V @ 0.1 A | 6 | 6 Pin (ST) / 8 Pin (DST) | 1.62" (41.3mm) x 1.31" (33.3mm) x 1.31" (33.3mm) | 0.44 (0.20) |
| ST-5-120 / DST-5-120 | 120 VCT @ 0.1 A | 60 V @ 0.2 A | 12 | 6 Pin (ST) / 8 Pin (DST) | 1.91" (48.4mm) x 1.59" (40.4mm) x 1.45" (36.9mm) | 0.70 (0.32) |
| ST-6-120 / DST-6-120 | 120 VCT @ 0.16 A | 60 V @ 0.32 A | 20 | 6 Pin (ST) / 8 Pin (DST) | 2.25" (57.2mm) x 1.88" (47.8mm) x 1.45" (36.9mm) | 0.80 (0.36) |
| ST-7-120 / DST-7-120 | 120 VCT @ 0.3 A | 60 V @ 0.6 A | 36 | 6 Pin (ST) / 8 Pin (DST) | 2.62" (66.7mm) x 2.18" (55.5mm) x 1.59" (40.4mm) | 1.1 (0.50) |
General Specifications:
- Power: 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 configurable
- Electrostatic Shield: Not necessary due to split bobbin construction
- Mounting Hardware: See chart; optional mounting screw (ST-MS) and nut (ST-MN) available from Signal. Size 7 has 4 mounting holes on 2.18" x 1.75" centers for #6 screws.
Note on Class 2 Marking: Transformers marked with (*), (**), or (#) are Class 2 rated. CSA certified as Inherently Limited (*), CSA certified as Non Inherently Limited (), UL Recognized UL5085-3, Inherently Limited (#).
Recommended Secondary Fuse Values:
| Code | Fuse Value (A) |
|---|---|
| (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 |
2411272143_Bel-Fuse-ST-4-24_C17617216.pdf
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