Product Overview
The Signal MT and DMT Series are chassis mount triple output transformers designed for regulated power supplies operating at 5 VDC and either 12 VDC or 15 VDC. These transformers offer the same high performance as the standard 241 series, providing reliable power solutions for various electronic applications. They are RoHS compliant and carry multiple agency certifications for safety and quality assurance. Custom versions are available upon request.
Product Attributes
- Brand: Signal Transformer (belfuse.com/signal)
- Series: MT / DMT
- Type: Two-4-One Triple Output Transformers
- Mounting: Chassis Mount
- Insulation Class: Class B (130 C)
- Certifications: UL 1446 (File # E66312), UL recognized to UL 506 / UL5085-2 (File # E63829), CSA certified to C22.2 #66.1 (File # 221070)
- Compliance: RoHS compliant
- Origin: USA (128 Atlantic Avenue, Lynbrook, NY 11563)
Technical Specifications
| Model | Power (VA) | Dielectric Strength (Vrms Hipot) | Primary Voltage (Nominal) | Primary Input Range | Frequency (Hz) | Secondary Outputs | Terminals | Dimensions (L x W x H) Inches (mm) | Weight lbs (kg) |
|---|---|---|---|---|---|---|---|---|---|
| MT-6-12 / DMT-6-12 | 30 | 2500 | 115 V | 100 V to 130 V | 50/60 | 5 VDC @ 1.75 A, 12 VDC @ 210 mA | Solder lug / quick connect | 3.25 (82.6) x 1.74 (44.3) x 1.96 (49.8) | 1.1 (0.50) |
| MT-6-15 / DMT-6-15 | 30 | 2500 | 115 V | 100 V to 130 V | 50/60 | 5 VDC @ 1.75 A, 15 VDC @ 175 mA | Solder lug / quick connect | 3.25 (82.6) x 1.74 (44.3) x 1.96 (49.8) | 1.1 (0.50) |
| MT-7-12 / DMT-7-12 | 56 | 2500 | 115 V | 100 V to 130 V | 50/60 | 5 VDC @ 2.8 A, 12 VDC @ 350 mA | Solder lug / quick connect | 3.68 (93.5) x 1.94 (49.2) x 2.28 (57.8) | 1.7 (0.77) |
| MT-7-15 / DMT-7-15 | 56 | 2500 | 115 V | 100 V to 130 V | 50/60 | 5 VDC @ 2.8 A, 15 VDC @ 280 mA | Solder lug / quick connect | 3.68 (93.5) x 1.94 (49.2) x 2.28 (57.8) | 1.7 (0.77) |
| MT-8-12 / DMT-8-12 | 100 | 2500 | 115 V | 100 V to 130 V | 50/60 | 5 VDC @ 4 A, 12 VDC @ 600 mA | Solder lug / quick connect | 4.03 (102.4) x 2.30 (58.5) x 2.58 (65.5) | 2.75 (1.25) |
| MT-8-15 / DMT-8-15 | 100 | 2500 | 115 V | 100 V to 130 V | 50/60 | 5 VDC @ 4 A, 15 VDC @ 500 mA | Solder lug / quick connect | 4.03 (102.4) x 2.30 (58.5) x 2.58 (65.5) | 2.75 (1.25) |
| Dual Primaries: 115/230 V nominal, Input range 200 V to 260 V available for all models. | |||||||||
| Mechanical Dimensions (Additional): Size 6: A=2.35 (59.7), B=1.14 (28.9), ML (typ)=2.81 (71.4). Size 7: A=2.70 (68.4), B=1.14 (28.9), ML (typ)=3.12 (79.4). Size 8: A=3.08 (78.2), B=1.43 (36.2), ML (typ)=3.56 (90.4). | |||||||||
Suggested Components for Power Supplies
| Part Number | Primary 115 V | Primary 115/230 V | Size | Suggested Components (C1, C3, IC13, IC23, IC33, D14, D24) |
|---|---|---|---|---|
| MT-6-12 / DMT-6-12 | MT-6-12 | DMT-6-12 | 6 | 10 KMFD @ 20 VDC, 1.5 KMFD @ 50 VDC, LM-323K-5, LM-340K-12, LM-320K-12, 3N253, 3N247 |
| MT-6-15 / DMT-6-15 | MT-6-15 | DMT-6-15 | 6 | 10 KMFD @ 20 VDC, 1.5 KMFD @ 50 VDC, LM-323K-5, LM-340K-15, LM-320K-15, 3N253, 3N247 |
| MT-7-12 / DMT-7-12 | MT-7-12 | DMT-7-12 | 7 | 15 KMFD @ 20 VDC, 2 KMFD @ 50 VDC, LM-323K-5, LM-340K-12, LM-320K-12, MDA-400, 3N247 |
| MT-7-15 / DMT-7-15 | MT-7-15 | DMT-7-15 | 7 | 15 KMFD @ 20 VDC, 2 KMFD @ 50 VDC, LM-323K-5, LM-340K-15, LM-320K-15, MDA-400, 3N247 |
| MT-8-12 / DMT-8-12 | MT-8-12 | DMT-8-12 | 8 | 26 KMFD @ 20 VDC, 3.1 KMFD @ 50 VDC, LM-338 2, LM-340K-12, LM-320K-12, MDA-800, 3N247 |
| MT-8-15 / DMT-8-15 | MT-8-15 | DMT-8-15 | 8 | 26 KMFD @ 20 VDC, 3.1 KMFD @ 50 VDC, LM-338 2, LM-340K-15, LM-320K-15, MDA-800, 3N247 |
Notes:
Note 1: Output capacitors C2 and C4 are required to stabilize regulators. Values can be 1 MFD min. tantalum or 10 MFD min. electrolytic, 20 V min.
Note 2: LM-338 is an adjustable regulator and Mfrs specifications (National Semiconductor) should be consulted for values of external components.
Note 3: All ICs are National Semiconductor types.
Note 4: All diodes are Motorola types.
2411272200_Bel-Fuse-DMT-8-12_C17456885.pdf
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