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Equivalent & Substitute Parts for RM 4C
Part Overview
The Sanken Electric USA Inc. RM 4C is categorized under Diodes, Rectifiers. It is a general-purpose through-hole axial diode rated at 1000 V, 3A, with standard recovery characteristics. The RM 4C is classified as an obsolete part. Identifying suitable alternative models is essential to ensure ongoing availability for existing and new designs requiring equivalent performance and compliance characteristics.
Substiute Parts
Key Parameters
| Parameter | RM 4C Specification |
|---|---|
| Category | Diodes, Rectifiers |
| Voltage - DC Reverse (Vr) (Max) | 1000 V |
| Current - Average Rectified (Io) | 3A |
| Voltage - Forward (Vf) (Max) @ If | 970 mV @ 3 A |
| Speed | Standard Recovery >500ns, >200mA (Io) |
| Current - Reverse Leakage @ Vr | 10 µA @ 1000 V |
| Mounting Type | Through Hole |
| Package / Case | Axial |
| Operating Temperature - Junction | -40°C ~ 150°C |
| RoHS Status | RoHS Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute diodes are selected by matching key electrical and mechanical parameters that ensure functional equivalence within the Diodes, Rectifiers category. These parameters are:
- Maximum DC Reverse Voltage (Vr)
- Average Rectified Current (Io)
- Maximum Forward Voltage (Vf) at specified forward current
- Recovery Speed category
- Maximum Reverse Leakage Current
- Mounting Type
- Package / Case
- Operating Temperature Range
- RoHS Compliance
- Moisture Sensitivity Level (MSL)
Only substitutes matching these criteria are considered equivalent for direct replacement.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Voltage - DC Reverse (Vr) (Max) | Current - Average Rectified (Io) | Voltage - Forward (Vf) (Max) @ If | Speed | Current - Reverse Leakage @ Vr | Mounting Type | Package / Case | Operating Temperature - Junction | RoHS Status | MSL |
|---|---|---|---|---|---|---|---|---|---|---|---|
| RM 4C | Sanken Electric USA Inc. | 1000 V | 3A | 970 mV @ 3 A | Standard Recovery >500ns, >200mA (Io) | 10 µA @ 1000 V | Through Hole | Axial | -40°C ~ 150°C | RoHS Compliant | 1 |
| 1N5408-E3/73 | Vishay General Semiconductor - Diodes Division | 1000 V | 3A | 1.2 V @ 3 A | Standard Recovery >500ns, >200mA (Io) | 5 µA @ 1000 V | Through Hole | DO-201AD, Axial | -50°C ~ 150°C | ROHS3 Compliant | 1 |
| 1N5408-G | Comchip Technology | 1000 V | 3A | 950 mV @ 3 A | Standard Recovery >500ns, >200mA (Io) | 5 µA @ 1000 V | Through Hole | DO-201AD, Axial | -65°C ~ 125°C | ROHS3 Compliant | 1 |
| 1N5408G-T | Diodes Incorporated | 1000 V | 3A | 1.1 V @ 3 A | Standard Recovery >500ns, >200mA (Io) | 5 µA @ 1000 V | Through Hole | DO-201AD, Axial | -65°C ~ 150°C | ROHS3 Compliant | 1 |
| BYT56M-TR | Vishay General Semiconductor - Diodes Division | 1000 V | 3A | 1.4 V @ 3 A | Fast Recovery =<500ns, >200mA (Io) | 5 µA @ 1000 V | Through Hole | SOD-64, Axial | -55°C ~ 175°C | ROHS3 Compliant | 1 |
| GP30M-E3/54 | Vishay General Semiconductor - Diodes Division | 1000 V | 3A | 1.1 V @ 3 A | Standard Recovery >500ns, >200mA (Io) | 5 µA @ 1000 V | Through Hole | DO-201AD, Axial | -65°C ~ 175°C | ROHS3 Compliant | 1 |
| RGP30M-E3/54 | Vishay General Semiconductor - Diodes Division | 1000 V | 3A | 1.3 V @ 3 A | Fast Recovery =<500ns, >200mA (Io) | 5 µA @ 1000 V | Through Hole | DO-201AD, Axial | -65°C ~ 175°C | ROHS3 Compliant | 1 |
| SF5408-TR | Vishay General Semiconductor - Diodes Division | 1000 V | 3A | 1.7 V @ 3 A | Fast Recovery =<500ns, >200mA (Io) | 5 µA @ 1000 V | Through Hole | SOD-64, Axial | -55°C ~ 175°C | ROHS3 Compliant | 1 |
Engineering Selection Recommendations
The RM 4C is classified as obsolete, with active substitute parts available that comply with RoHS and have an MSL of 1 (Unlimited). Substitute diodes listed above meet the same compliance and product status requirements provided in the input and are suitable for consideration in applications requiring replacements that fulfill the specified compliance standards.
Frequently Asked Questions (FAQ)
Q: What criteria are used to determine if a diode rectifier is an equivalent substitute for RM 4C?
A: Substitution is based strictly on matching maximum DC reverse voltage, average rectified current, maximum forward voltage at test current, recovery speed category, reverse leakage current, mounting type, package/case, operating temperature range, RoHS status, and moisture sensitivity level.
Q: Are all mechanical and electrical attributes matched between RM 4C and the substitutes?
A: Only parameters explicitly given in the product documentation and substitution list are compared and matched, including electrical ratings and package parameters.
Q: How should package differences (e.g., DO-201AD vs SOD-64) be addressed?
A: Selection must ensure compatibility with the existing board or socket based on the specified package formats in the comparison table.
Q: Are all listed substitute diodes through-hole axial types?
A: All alternatives listed feature through-hole mounting and an axial package configuration, as specified in the input parameters.
Q: Are RoHS compliance and MSL status considered in these recommendations?
A: Only substitute parts with matching RoHS compliant and MSL 1 (Unlimited) status are included in the recommended list.
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