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Specifications
Secondary Winding:
2
Isolation Voltage(Vrms):
2.5kV
Primary Winding(s):
2
Secondary Side Voltage:
24V;48V
Output Current:
46mA;23mA
Primary Side Voltage:
115V;230V
Mfr. Part #:
DST-2-48
Package:
Through Hole-8P,34.9x28.6mm
Key Attributes
Model Number:
DST-2-48
Product Description
Bel Fuse Signal ST / DST Series Split/Tran Specialty Purpose & Class 2 Transformers
The Signal ST and DST transformers are designed for specialty purposes and Class 2 applications, utilizing a split bobbin construction with dual cavities for superior isolation and low capacitive coupling. This design enhances reliability and simplifies board insertion with its rigid pin construction. These transformers are suitable for a wide range of power requirements from 1.1 VA to 36 VA.
Product Attributes
- Brand: Bel Fuse Signal
- Series: ST / DST Series Split/Tran
- Construction: Split Bobbin with Dual Cavity
- Insulation System: Class F, 155 C
- RoHS Compliant: Yes
- Agency 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
Technical Specifications
| Part Number | Secondary RMS Rating (Series) | Secondary RMS Rating (Parallel) | VA Rating | Primary Voltage | Pins | Dielectric Strength (Hipot) | Insulation System | Weight (lbs/kg) | Dimensions (L x W x H) |
|---|---|---|---|---|---|---|---|---|---|
| ST-2-10**# / DST-2-10**# | 10 VCT @ 0.11 A | 5 V @ 0.22 A | 1.1 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.17 (0.08) | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) |
| ST-3-10*# / DST-3-10*# | 10 VCT @ 0.25 A | 5 V @ 0.5 A | 2.4 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.25 (0.11) | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) |
| ST-4-10*# / DST-4-10*# | 10 VCT @ 0.6 A | 5 V @ 1.2 A | 6 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.44 (0.20) | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) |
| ST-5-10*# / DST-5-10*# | 10 VCT @ 1.2 A | 5 V @ 2.4 A | 12 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.70 (0.32) | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) |
| ST-6-10 / DST-6-10 | 10 VCT @ 2.0 A | 5 V @ 4.0 A | 20 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.80 (0.36) | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) |
| ST-7-10 / DST-7-10 | 10 VCT @ 3.6 A | 5 V @ 7.2 A | 36 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 1.1 (0.50) | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) |
| ST-2-12**# / DST-2-12**# | 12.6 VCT @ 0.09 A | 6.3 V @ 0.18 A | 1.1 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.17 (0.08) | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) |
| ST-3-12*# / DST-3-12*# | 12.6 VCT @ 0.2 A | 6.3 V @ 0.4 A | 2.4 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.25 (0.11) | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) |
| ST-4-12*# / DST-4-12*# | 12.6 VCT @ 0.5 A | 6.3 V @ 1.0 A | 6 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.44 (0.20) | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) |
| ST-5-12*# / DST-5-12*# | 12.6 VCT @ 1.0 A | 6.3 V @ 2.0 A | 12 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.70 (0.32) | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) |
| ST-6-12 / DST-6-12 | 12.6 VCT @ 1.6 A | 6.3 V @ 3.2 A | 20 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.80 (0.36) | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) |
| ST-7-12 / DST-7-12 | 12.6 VCT @ 2.85 A | 6.3 V @ 5.7 A | 36 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 1.1 (0.50) | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) |
| ST-2-16**# / DST-2-16**# | 16 VCT @ 0.07 A | 8 V @ 0.14 A | 1.1 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.17 (0.08) | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) |
| ST-3-16*# / DST-3-16*# | 16 VCT @ 0.15 A | 8 V @ 0.3 A | 2.4 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.25 (0.11) | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) |
| ST-4-16*# / DST-4-16*# | 16 VCT @ 0.4 A | 8 V @ 0.8 A | 6 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.44 (0.20) | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) |
| ST-5-16*# / DST-5-16*# | 16 VCT @ 0.8 A | 8 V @ 1.6 A | 12 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.70 (0.32) | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) |
| ST-6-16 / DST-6-16 | 16 VCT @ 1.25 A | 8 V @ 2.5 A | 20 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.80 (0.36) | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) |
| ST-7-16 / DST-7-16 | 16 VCT @ 2.25 A | 8 V @ 4.5 A | 36 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 1.1 (0.50) | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) |
| ST-2-20**# / DST-2-20**# | 20 VCT @ 0.055 A | 10 V @ 0.11 A | 1.1 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.17 (0.08) | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) |
| ST-3-20*# / DST-3-20*# | 20 VCT @ 0.12 A | 10 V @ 0.24 A | 2.4 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.25 (0.11) | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) |
| ST-4-20*# / DST-4-20*# | 20 VCT @ 0.3 A | 10 V @ 0.6 A | 6 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.44 (0.20) | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) |
| ST-5-20*# / DST-5-20*# | 20 VCT @ 0.6 A | 10 V @ 1.2 A | 12 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.70 (0.32) | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) |
| ST-6-20 / DST-6-20 | 20 VCT @ 1.0 A | 10 V @ 2.0 A | 20 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.80 (0.36) | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) |
| ST-7-20 / DST-7-20 | 20 VCT @ 1.8 A | 10 V @ 3.6 A | 36 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 1.1 (0.50) | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) |
| ST-2-24**# / DST-2-24**# | 24 VCT @ 0.045 A | 12 V @ 0.09 A | 1.1 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.17 (0.08) | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) |
| ST-3-24*# / DST-3-24*# | 24 VCT @ 0.1 A | 12 V @ 0.2 A | 2.4 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.25 (0.11) | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) |
| ST-4-24*# / DST-4-24*# | 24 VCT @ 0.25 A | 12 V @ 0.5 A | 6 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.44 (0.20) | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) |
| ST-5-24*# / DST-5-24*# | 24 VCT @ 0.5 A | 12 V @ 1.0 A | 12 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.70 (0.32) | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) |
| ST-6-24 / DST-6-24 | 24 VCT @ 0.8 A | 12 V @ 1.6 A | 20 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.80 (0.36) | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) |
| ST-7-24 / DST-7-24 | 24 VCT @ 1.5 A | 12 V @ 3.0 A | 36 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 1.1 (0.50) | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) |
| ST-2-28 / DST-2-28 | 28 VCT @ 0.04 A | 14 V @ 0.08 A | 1.1 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.17 (0.08) | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) |
| ST-3-28 / DST-3-28 | 28 VCT @ 0.085 A | 14 V @ 0.17 A | 2.4 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.25 (0.11) | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) |
| ST-4-28 / DST-4-28 | 28 VCT @ 0.2 A | 14 V @ 0.4 A | 6 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.44 (0.20) | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) |
| ST-5-28 / DST-5-28 | 28 VCT @ 0.42 A | 14 V @ 0.84 A | 12 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.70 (0.32) | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) |
| ST-6-28 / DST-6-28 | 28 VCT @ 0.7 A | 14 V @ 1.4 A | 20 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.80 (0.36) | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) |
| ST-7-28 / DST-7-28 | 28 VCT @ 1.3 A | 14 V @ 2.6 A | 36 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 1.1 (0.50) | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) |
| ST-2-36 / DST-2-36 | 36 VCT @ 0.03 A | 18 V @ 0.06 A | 1.1 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.17 (0.08) | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) |
| ST-3-36 / DST-3-36 | 36 VCT @ 0.065 A | 18 V @ 0.13 A | 2.4 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.25 (0.11) | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) |
| ST-4-36 / DST-4-36 | 36 VCT @ 0.17 A | 18 V @ 0.34 A | 6 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.44 (0.20) | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) |
| ST-5-36 / DST-5-36 | 36 VCT @ 0.35 A | 18 V @ 0.7 A | 12 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.70 (0.32) | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) |
| ST-6-36 / DST-6-36 | 36 VCT @ 0.55 A | 18 V @ 1.1 A | 20 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.80 (0.36) | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) |
| ST-7-36 / DST-7-36 | 36 VCT @ 1.0 A | 18 V @ 2.0 A | 36 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 1.1 (0.50) | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) |
| ST-2-48 / DST-2-48 | 48 VCT @ 0.023 A | 24 V @ 0.046 A | 1.1 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.17 (0.08) | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) |
| ST-3-48 / DST-3-48 | 48 VCT @ 0.05 A | 24 V @ 0.1 A | 2.4 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.25 (0.11) | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) |
| ST-4-48 / DST-4-48 | 48 VCT @ 0.125 A | 24 V @ 0.25 A | 6 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.44 (0.20) | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) |
| ST-5-48 / DST-5-48 | 48 VCT @ 0.25 A | 24 V @ 0.5 A | 12 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.70 (0.32) | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) |
| ST-6-48 / DST-6-48 | 48 VCT @ 0.4 A | 24 V @ 0.8 A | 20 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.80 (0.36) | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) |
| ST-7-48 / DST-7-48 | 48 VCT @ 0.75 A | 24 V @ 1.5 A | 36 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 1.1 (0.50) | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) |
| ST-2-56 / DST-2-56 | 56 VCT @ 0.02 A | 28 V @ 0.04 A | 1.1 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.17 (0.08) | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) |
| ST-3-56 / DST-3-56 | 56 VCT @ 0.045 A | 28 V @ 0.09 A | 2.4 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.25 (0.11) | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) |
| ST-4-56 / DST-4-56 | 56 VCT @ 0.11 A | 28 V @ 0.22 A | 6 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.44 (0.20) | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) |
| ST-5-56 / DST-5-56 | 56 VCT @ 0.22 A | 28 V @ 0.44 A | 12 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.70 (0.32) | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) |
| ST-6-56 / DST-6-56 | 56 VCT @ 0.35 A | 28 V @ 0.7 A | 20 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.80 (0.36) | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) |
| ST-7-56 / DST-7-56 | 56 VCT @ 0.65 A | 28 V @ 1.3 A | 36 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 1.1 (0.50) | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) |
| ST-2-120 / DST-2-120 | 120 VCT @ 0.01 A | 60 V @ 0.02 A | 1.1 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.17 (0.08) | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) |
| ST-3-120 / DST-3-120 | 120 VCT @ 0.02 A | 60 V @ 0.04 A | 2.4 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.25 (0.11) | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) |
| ST-4-120 / DST-4-120 | 120 VCT @ 0.05 A | 60 V @ 0.1 A | 6 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.44 (0.20) | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) |
| ST-5-120 / DST-5-120 | 120 VCT @ 0.1 A | 60 V @ 0.2 A | 12 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.70 (0.32) | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) |
| ST-6-120 / DST-6-120 | 120 VCT @ 0.16 A | 60 V @ 0.32 A | 20 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 0.80 (0.36) | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) |
| ST-7-120 / DST-7-120 | 120 VCT @ 0.3 A | 60 V @ 0.6 A | 36 | 115 V | 6 (ST) / 8 (DST) | 2500 Vrms | Class F, 155 C | 1.1 (0.50) | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) |
Mounting Hardware
Refer to the chart for mounting hardware specifications. Optional Mounting Screw (ST-MS) and Nut (ST-MN) are available from Signal.
Size 7 Mounting: Features 4 mounting holes on 2.18 x 1.75 centers for #6 screws.
Recommended Secondary Fuse Values
See chart for recommended secondary fuse values, indicated by numbers in parentheses in the part number selection table.
Fuse Value Chart: (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.
Specifications subject to change without notice.
2020 Signal Transformer
2411272143_Bel-Fuse-DST-2-48_C17245955.pdf
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