Product Overview
Signal's MT and DMT series chassis mount triple output transformers are designed to provide regulated power supplies for 5 VDC and either 12 VDC or 15 VDC. These transformers offer the same performance features as the 241 series and are available in multiple power ratings (30 VA, 56 VA, and 100 VA). They feature single or dual primaries with a nominal input of 115 V or 115/230 V at 50/60 Hz, and an input range of 100 V to 130 V or 200 V to 260 V. The transformers are built with solder lug/quick connect terminals and Class B insulation (130 C), ensuring reliable operation. They are RoHS compliant and carry UL and CSA certifications.
Product Attributes
- Brand: Signal
- Series: MT / DMT
- Type: Chassis Mount Triple Output Transformers
- 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 (implied by address)
Technical Specifications
| Model | Power (VA) | Dielectric Strength (Vrms Hipot) | Primary Voltage (Nominal) | Input Range (V) | Secondary Outputs | Terminals | Weight (lbs/kg) | Dimensions (L x W x H - Inches/mm) |
|---|---|---|---|---|---|---|---|---|
| MT/DMT Series (General) | 30, 56, 100 | 2500 | 115 V or 115/230 V (50/60 Hz) | 100-130 V or 200-260 V | 5 VDC with 12 VDC or 5 VDC with 15 VDC | Solder lug / quick connect | N/A | N/A |
| MT-6 / DMT-6 | 30 | N/A | 115 V or 115/230 V | N/A | 5 V @ 1.75 A 12 V @ 210 mA (Regulator I) OR 5 V @ 1.75 A 15 V @ 175 mA (Regulator II) | N/A | 1.1 (0.50) | 3.25 x 1.74 x 1.96 (82.6 x 44.3 x 49.8) |
| MT-7 / DMT-7 | 56 | N/A | 115 V or 115/230 V | N/A | 5 V @ 2.8 A 12 V @ 350 mA (Regulator I) OR 5 V @ 2.8 A 15 V @ 280 mA (Regulator II) | N/A | 1.7 (0.77) | 3.68 x 1.94 x 2.28 (93.5 x 49.2 x 57.8) |
| MT-8 / DMT-8 | 100 | N/A | 115 V or 115/230 V | N/A | 5 V @ 4 A 12 V @ 600 mA (Regulator I) OR 5 V @ 4 A 15 V @ 500 mA (Regulator II) | N/A | 2.75 (1.25) | 4.03 x 2.30 x 2.58 (102.4 x 58.5 x 65.5) |
Suggested Components (for MT/DMT Series)
| Part Number | Primary 50/60 Hz | Size | Suggested Components (C2 & C4) | Suggested Components (IC13, IC23, IC33) | Suggested Components (D14, D24) |
|---|---|---|---|---|---|
| MT-6-12 / DMT-6-12 | 115 V / 115/230 V | 6 | 10 F @ 20 VDC / 1.5 F @ 50 VDC | LM-323K-5 / LM-340K-12 / LM-320K-12 | 3N253 / 3N247 |
| MT-6-15 / DMT-6-15 | 115 V / 115/230 V | 6 | 10 F @ 20 VDC / 1.5 F @ 50 VDC | LM-323K-5 / LM-340K-15 / LM-320K-15 | 3N253 / 3N247 |
| MT-7-12 / DMT-7-12 | 115 V / 115/230 V | 7 | 15 F @ 20 VDC / 2 F @ 50 VDC | LM-323K-5 / LM-340K-12 / LM-320K-12 | MDA-400 / 3N247 |
| MT-7-15 / DMT-7-15 | 115 V / 115/230 V | 7 | 15 F @ 20 VDC / 2 F @ 50 VDC | LM-323K-5 / LM-340K-15 / LM-320K-15 | MDA-400 / 3N247 |
| MT-8-12 / DMT-8-12 | 115 V / 115/230 V | 8 | 26 F @ 20 VDC / 3.1 F @ 50 VDC | LM-338 2 / LM-340K-12 / LM-320K-12 | MDA-800 / 3N247 |
| MT-8-15 / DMT-8-15 | 115 V / 115/230 V | 8 | 26 F @ 20 VDC / 3.1 F @ 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-7-12_C17489756.pdf
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