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Specifications
Secondary Winding:
2
Isolation Voltage(Vrms):
2.5kV
Primary Winding(s):
2
Secondary Side Voltage:
12V;24V
Output Current:
3A;1.5A
Primary Side Voltage:
115V;230V
Mfr. Part #:
DST-7-24
Package:
Through Hole-8P,66.7x55.5mm
Key Attributes
Model Number:
DST-7-24
Product Description
Product Overview
The Signal ST/DST Series Split/Tran Specialty Purpose & Class 2 Transformers are designed for printed circuit board mounting, featuring a split bobbin construction with dual cavities that provide superior isolation and low capacitive coupling. This design eliminates the need for an electrostatic shield. The transformers offer rigid pin construction for easier board insertion and enhanced reliability. They are suitable for a wide range of power applications from 1.1 VA to 36 VA and are available in single or dual primary configurations (115 V or 115/230 V, 50/60 Hz) with series or parallel secondary options.
Product Attributes
- Brand: 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 (#)
- CSA certified as Inherently Limited (*)
- CSA certified as Non Inherently Limited (**) - see recommended fuse rating table
- UL Recognized UL5085-3, Inherently Limited (#) File # E116583
- Custom Versions: Available upon request
Technical Specifications
| Model | Secondary RMS Rating | Power (VA) | Dimensions (L x W x H) Inches (mm) | Weight lbs (kg) | Mounting Holes | Optional Mounting Hardware |
|---|---|---|---|---|---|---|
| ST-2-10**# / DST-2-10**# | 10 VCT @ 0.11 A / 5 V @ 0.22 A | 1.1 | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) | 0.17 (0.08) | - | - |
| ST-3-10*# / DST-3-10*# | 10 VCT @ 0.25 A / 5 V @ 0.5 A | 2.4 | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) | 0.25 (0.11) | - | - |
| ST-4-10*# / DST-4-10*# | 10 VCT @ 0.6 A / 5 V @ 1.2 A | 6 | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) | 0.44 (0.20) | 1.06 (26.9) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-5-10*# / DST-5-10*# | 10 VCT @ 1.2 A / 5 V @ 2.4 A | 12 | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) | 0.70 (0.32) | 1.25 (31.8) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-6-10 / DST-6-10 | 10 VCT @ 2.0 A / 5 V @ 4.0 A | 20 | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) | 0.80 (0.36) | 1.50 (38.1) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-7-10 / DST-7-10 | 10 VCT @ 3.6 A / 5 V @ 7.2 A | 36 | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) | 1.1 (0.50) | 2.18 x 1.75 centers for #6 screws | ST-MS (screw) and ST-MN (nut) available |
| ST-2-12**# / DST-2-12**# | 12.6 VCT @ 0.09 A / 6.3 V @ 0.18 A | 1.1 | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) | 0.17 (0.08) | - | - |
| ST-3-12*# / DST-3-12*# | 12.6 VCT @ 0.2 A / 6.3 V @ 0.4 A | 2.4 | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) | 0.25 (0.11) | - | - |
| ST-4-12*# / DST-4-12*# | 12.6 VCT @ 0.5 A / 6.3 V @ 1.0 A | 6 | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) | 0.44 (0.20) | 1.06 (26.9) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-5-12*# / DST-5-12*# | 12.6 VCT @ 1.0 A / 6.3 V @ 2.0 A | 12 | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) | 0.70 (0.32) | 1.25 (31.8) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-6-12 / DST-6-12 | 12.6 VCT @ 1.6 A / 6.3 V @ 3.2 A | 20 | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) | 0.80 (0.36) | 1.50 (38.1) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-7-12 / DST-7-12 | 12.6 VCT @ 2.85 A / 6.3 V @ 5.7 A | 36 | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) | 1.1 (0.50) | 2.18 x 1.75 centers for #6 screws | ST-MS (screw) and ST-MN (nut) available |
| ST-2-16**# / DST-2-16**# | 16 VCT @ 0.07 A / 8 V @ 0.14 A | 1.1 | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) | 0.17 (0.08) | - | - |
| ST-3-16*# / DST-3-16*# | 16 VCT @ 0.15 A / 8 V @ 0.3 A | 2.4 | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) | 0.25 (0.11) | - | - |
| ST-4-16*# / DST-4-16*# | 16 VCT @ 0.4 A / 8 V @ 0.8 A | 6 | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) | 0.44 (0.20) | 1.06 (26.9) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-5-16*# / DST-5-16*# | 16 VCT @ 0.8 A / 8 V @ 1.6 A | 12 | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) | 0.70 (0.32) | 1.25 (31.8) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-6-16 / DST-6-16 | 16 VCT @ 1.25 A / 8 V @ 2.5 A | 20 | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) | 0.80 (0.36) | 1.50 (38.1) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-7-16 / DST-7-16 | 16 VCT @ 2.25 A / 8 V @ 4.5 A | 36 | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) | 1.1 (0.50) | 2.18 x 1.75 centers for #6 screws | ST-MS (screw) and ST-MN (nut) available |
| ST-2-20**# / DST-2-20**# | 20 VCT @ 0.055 A / 10 V @ 0.11 A | 1.1 | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) | 0.17 (0.08) | - | - |
| ST-3-20*# / DST-3-20*# | 20 VCT @ 0.12 A / 10 V @ 0.24 A | 2.4 | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) | 0.25 (0.11) | - | - |
| ST-4-20*# / DST-4-20*# | 20 VCT @ 0.3 A / 10 V @ 0.6 A | 6 | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) | 0.44 (0.20) | 1.06 (26.9) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-5-20*# / DST-5-20*# | 20 VCT @ 0.6 A / 10 V @ 1.2 A | 12 | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) | 0.70 (0.32) | 1.25 (31.8) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-6-20 / DST-6-20 | 20 VCT @ 1.0 A / 10 V @ 2.0 A | 20 | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) | 0.80 (0.36) | 1.50 (38.1) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-7-20 / DST-7-20 | 20 VCT @ 1.8 A / 10 V @ 3.6 A | 36 | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) | 1.1 (0.50) | 2.18 x 1.75 centers for #6 screws | ST-MS (screw) and ST-MN (nut) available |
| ST-2-24**# / DST-2-24**# | 24 VCT @ 0.045 A / 12 V @ 0.09 A | 1.1 | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) | 0.17 (0.08) | - | - |
| ST-3-24*# / DST-3-24*# | 24 VCT @ 0.1 A / 12 V @ 0.2 A | 2.4 | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) | 0.25 (0.11) | - | - |
| ST-4-24*# / DST-4-24*# | 24 VCT @ 0.25 A / 12 V @ 0.5 A | 6 | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) | 0.44 (0.20) | 1.06 (26.9) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-5-24*# / DST-5-24*# | 24 VCT @ 0.5 A / 12 V @ 1.0 A | 12 | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) | 0.70 (0.32) | 1.25 (31.8) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-6-24 / DST-6-24 | 24 VCT @ 0.8 A / 12 V @ 1.6 A | 20 | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) | 0.80 (0.36) | 1.50 (38.1) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-7-24 / DST-7-24 | 24 VCT @ 1.5 A / 12 V @ 3.0 A | 36 | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) | 1.1 (0.50) | 2.18 x 1.75 centers for #6 screws | ST-MS (screw) and ST-MN (nut) available |
| ST-2-28 / DST-2-28 | 28 VCT @ 0.04 A / 14 V @ 0.08 A | 1.1 | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) | 0.17 (0.08) | - | - |
| ST-3-28 / DST-3-28 | 28 VCT @ 0.085 A / 14 V @ 0.17 A | 2.4 | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) | 0.25 (0.11) | - | - |
| ST-4-28 / DST-4-28 | 28 VCT @ 0.2 A / 14 V @ 0.4 A | 6 | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) | 0.44 (0.20) | 1.06 (26.9) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-5-28 / DST-5-28 | 28 VCT @ 0.42 A / 14 V @ 0.84 A | 12 | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) | 0.70 (0.32) | 1.25 (31.8) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-6-28 / DST-6-28 | 28 VCT @ 0.7 A / 14 V @ 1.4 A | 20 | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) | 0.80 (0.36) | 1.50 (38.1) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-7-28 / DST-7-28 | 28 VCT @ 1.3 A / 14 V @ 2.6 A | 36 | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) | 1.1 (0.50) | 2.18 x 1.75 centers for #6 screws | ST-MS (screw) and ST-MN (nut) available |
| ST-2-36 / DST-2-36 | 36 VCT @ 0.03 A / 18 V @ 0.06 A | 1.1 | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) | 0.17 (0.08) | - | - |
| ST-3-36 / DST-3-36 | 36 VCT @ 0.065 A / 18 V @ 0.13 A | 2.4 | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) | 0.25 (0.11) | - | - |
| ST-4-36 / DST-4-36 | 36 VCT @ 0.17 A / 18 V @ 0.34 A | 6 | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) | 0.44 (0.20) | 1.06 (26.9) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-5-36 / DST-5-36 | 36 VCT @ 0.35 A / 18 V @ 0.7 A | 12 | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) | 0.70 (0.32) | 1.25 (31.8) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-6-36 / DST-6-36 | 36 VCT @ 0.55 A / 18 V @ 1.1 A | 20 | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) | 0.80 (0.36) | 1.50 (38.1) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-7-36 / DST-7-36 | 36 VCT @ 1.0 A / 18 V @ 2.0 A | 36 | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) | 1.1 (0.50) | 2.18 x 1.75 centers for #6 screws | ST-MS (screw) and ST-MN (nut) available |
| ST-2-48 / DST-2-48 | 48 VCT @ 0.023 A / 24 V @ 0.046 A | 1.1 | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) | 0.17 (0.08) | - | - |
| ST-3-48 / DST-3-48 | 48 VCT @ 0.05 A / 24 V @ 0.1 A | 2.4 | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) | 0.25 (0.11) | - | - |
| ST-4-48 / DST-4-48 | 48 VCT @ 0.125 A / 24 V @ 0.25 A | 6 | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) | 0.44 (0.20) | 1.06 (26.9) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-5-48 / DST-5-48 | 48 VCT @ 0.25 A / 24 V @ 0.5 A | 12 | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) | 0.70 (0.32) | 1.25 (31.8) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-6-48 / DST-6-48 | 48 VCT @ 0.4 A / 24 V @ 0.8 A | 20 | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) | 0.80 (0.36) | 1.50 (38.1) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-7-48 / DST-7-48 | 48 VCT @ 0.75 A / 24 V @ 1.5 A | 36 | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) | 1.1 (0.50) | 2.18 x 1.75 centers for #6 screws | ST-MS (screw) and ST-MN (nut) available |
| ST-2-56 / DST-2-56 | 56 VCT @ 0.02 A / 28 V @ 0.04 A | 1.1 | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) | 0.17 (0.08) | - | - |
| ST-3-56 / DST-3-56 | 56 VCT @ 0.045 A / 28 V @ 0.09 A | 2.4 | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) | 0.25 (0.11) | - | - |
| ST-4-56 / DST-4-56 | 56 VCT @ 0.11 A / 28 V @ 0.22 A | 6 | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) | 0.44 (0.20) | 1.06 (26.9) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-5-56 / DST-5-56 | 56 VCT @ 0.22 A / 28 V @ 0.44 A | 12 | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) | 0.70 (0.32) | 1.25 (31.8) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-6-56 / DST-6-56 | 56 VCT @ 0.35 A / 28 V @ 0.7 A | 20 | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) | 0.80 (0.36) | 1.50 (38.1) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-7-56 / DST-7-56 | 56 VCT @ 0.65 A / 28 V @ 1.3 A | 36 | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) | 1.1 (0.50) | 2.18 x 1.75 centers for #6 screws | ST-MS (screw) and ST-MN (nut) available |
| ST-2-120 / DST-2-120 | 120 VCT @ 0.01 A / 60 V @ 0.02 A | 1.1 | 1.37 (34.9) x 1.12 (28.6) x 0.97 (24.6) | 0.17 (0.08) | - | - |
| ST-3-120 / DST-3-120 | 120 VCT @ 0.02 A / 60 V @ 0.04 A | 2.4 | 1.37 (34.9) x 1.12 (28.6) x 1.21 (30.8) | 0.25 (0.11) | - | - |
| ST-4-120 / DST-4-120 | 120 VCT @ 0.05 A / 60 V @ 0.1 A | 6 | 1.62 (41.3) x 1.31 (33.3) x 1.31 (33.3) | 0.44 (0.20) | 1.06 (26.9) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-5-120 / DST-5-120 | 120 VCT @ 0.1 A / 60 V @ 0.2 A | 12 | 1.91 (48.4) x 1.59 (40.4) x 1.45 (36.9) | 0.70 (0.32) | 1.25 (31.8) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-6-120 / DST-6-120 | 120 VCT @ 0.16 A / 60 V @ 0.32 A | 20 | 2.25 (57.2) x 1.88 (47.8) x 1.45 (36.9) | 0.80 (0.36) | 1.50 (38.1) centers | Nylon 4-40 x 1.37 (4-40 x 34.9) |
| ST-7-120 / DST-7-120 | 120 VCT @ 0.3 A / 60 V @ 0.6 A | 36 | 2.62 (66.7) x 2.18 (55.5) x 1.59 (40.4) | 1.1 (0.50) | 2.18 x 1.75 centers for #6 screws | ST-MS (screw) and ST-MN (nut) available |
| 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 Electrostatic Shield: Not necessary, split bobbin construction Insulation System: Class F, 155 C Mounting Hardware: see chart | ||||||
| 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 | ||||||
Specifications subject to change without notice.
2411272143_Bel-Fuse-DST-7-24_C17392345.pdf
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