Product Overview
Signal's MT and DMT Series are chassis mount triple output transformers designed for regulated power supplies. These transformers offer the performance features of the 241 series and are available in 30 VA, 56 VA, and 100 VA power ratings. They are suitable for applications requiring 5 VDC with either 12 VDC or 15 VDC outputs. The transformers feature dual complementary outputs, single or dual primaries (115 V or 115/230 V nominal, 50/60 Hz), and solder lug/quick connect terminals. They are UL recognized and CSA certified, with RoHS compliance.
Product Attributes
- Brand: Signal
- Series: MT / DMT
- Type: Chassis Mount Triple Output Transformers
- Output Configuration: Two-4-One Triple Output (5 VDC with 12 VDC or 5 VDC with 15 VDC)
- 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)
- RoHS Compliant: Yes
- Custom Versions: Available upon request
Technical Specifications
| Model | Primary (115 V) | Primary (115/230 V) | DC Output (Regulator I) | DC Output (Regulator II) | Size (L x W x H in) | Weight (lbs) | Power Rating (VA) | Dielectric Strength (Vrms Hipot) | Input Range (V) | Frequency (Hz) |
|---|---|---|---|---|---|---|---|---|---|---|
| MT-6-12 / DMT-6-12 | MT-6-12 | DMT-6-12 | 5 V @ 1.75 A | 12 V @ 210 mA | 3.68 x 1.94 x 2.28 | 1.7 (0.77) | 30, 56, 100 | 2500 | 100 V to 130 V or 200 V to 260 V | 50/60 |
| MT-6-15 / DMT-6-15 | MT-6-15 | DMT-6-15 | 5 V @ 1.75 A | 15 V @ 175 mA | 3.68 x 1.94 x 2.28 | 1.7 (0.77) | 30, 56, 100 | 2500 | 100 V to 130 V or 200 V to 260 V | 50/60 |
| MT-7-12 / DMT-7-12 | MT-7-12 | DMT-7-12 | 5 V @ 2.8 A | 12 V @ 350 mA | 4.03 x 2.30 x 2.58 | 2.75 (1.25) | 30, 56, 100 | 2500 | 100 V to 130 V or 200 V to 260 V | 50/60 |
| MT-7-15 / DMT-7-15 | MT-7-15 | DMT-7-15 | 5 V @ 2.8 A | 15 V @ 280 mA | 4.03 x 2.30 x 2.58 | 2.75 (1.25) | 30, 56, 100 | 2500 | 100 V to 130 V or 200 V to 260 V | 50/60 |
| MT-8-12 / DMT-8-12 | MT-8-12 | DMT-8-12 | 5 V @ 4 A | 12 V @ 600 mA | 4.03 x 2.30 x 2.58 | 2.75 (1.25) | 30, 56, 100 | 2500 | 100 V to 130 V or 200 V to 260 V | 50/60 |
| MT-8-15 / DMT-8-15 | MT-8-15 | DMT-8-15 | 5 V @ 4 A | 15 V @ 500 mA | 4.03 x 2.30 x 2.58 | 2.75 (1.25) | 30, 56, 100 | 2500 | 100 V to 130 V or 200 V to 260 V | 50/60 |
| Model | Size | Suggested Components (C1, C3) | Suggested Components (IC13, IC23, IC33) | Suggested Components (D14, D24) |
|---|---|---|---|---|
| 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 | 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 | 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 | 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 | 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 | 8 | 26 KMFD @ 20 VDC, 3.1 KMFD @ 50 VDC | LM-338*2, LM-340K-15, LM-320K-15 | MDA-800, 3N247 |
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-MT-6-12_C17451531.pdf
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