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CBR2-040 Bridge Rectifier Equivalent & Substitute Parts
Part Overview
The CBR2-040 is a single-phase bridge rectifier manufactured by Central Semiconductor Corp, rated for 400 V peak reverse voltage and 2 A average rectified current. This component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The part features a through-hole A Case package suitable for standard rectification applications in industrial and consumer electronics.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Diode Type | Single Phase |
| Technology | Standard |
| Voltage - Peak Reverse (Max) | 400 V |
| Current - Average Rectified (Io) | 2 A |
| Voltage - Forward (Vf) (Max) @ If | 1.1 V @ 2 A |
| Operating Temperature Range | -65°C ~ 150°C (TJ) |
| Mounting Type | Through Hole |
| Package / Case | 4-Circular, A Case |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the CBR2-040 is determined by electrical and mechanical parameter equivalence. The critical parameters for bridge rectifier substitution are:
- Voltage - Peak Reverse (Max): 400 V minimum
- Current - Average Rectified (Io): 2 A minimum
- Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 2 A maximum
- Diode Type: Single Phase
- Technology: Standard
- Mounting Type: Through Hole
- Package Configuration: 4-Circular format
The 2W04G-E4/51 manufactured by Vishay General Semiconductor - Diodes Division meets all electrical specifications and maintains through-hole mounting compatibility. While the package designation differs (WOG versus A Case), both are 4-circular through-hole configurations with identical pin spacing and mechanical footprint compatibility.
Parameter Comparison
| Parameter | CBR2-040 | 2W04G-E4/51 | Match Status |
|---|---|---|---|
| Diode Type | Single Phase | Single Phase | Equivalent |
| Technology | Standard | Standard | Equivalent |
| Voltage - Peak Reverse (Max) | 400 V | 400 V | Equivalent |
| Current - Average Rectified (Io) | 2 A | 2 A | Equivalent |
| Voltage - Forward (Vf) (Max) @ If | 1.1 V @ 2 A | 1.1 V @ 2 A | Equivalent |
| Current - Reverse Leakage @ Vr | 10 µA @ 400 V | 5 µA @ 400 V | Substitute Superior |
| Operating Temperature Range | -65°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | Substitute Reduced Lower Limit |
| Mounting Type | Through Hole | Through Hole | Equivalent |
| Package / Case | 4-Circular, A Case | 4-Circular, WOG | Mechanically Compatible |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | Equivalent |
Engineering Selection Recommendations
The 2W04G-E4/51 is the primary substitute for the obsolete CBR2-040. Selection is based on the following factors:
Product Status: The CBR2-040 is obsolete, while the 2W04G-E4/51 is active and maintains production availability with 3528 units in stock versus 970 units of the legacy part.
Electrical Equivalence: All critical electrical parameters match or exceed the original specification. The 2W04G-E4/51 demonstrates superior reverse leakage performance (5 µA versus 10 µA at 400 V), indicating improved device quality.
Compliance & Certifications: The 2W04G-E4/51 carries RoHS3 compliance and REACH unaffected status, meeting modern regulatory requirements. Both parts share identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications.
Thermal Considerations: The substitute part operates to 150°C maximum, matching the original. The lower minimum operating temperature (-55°C versus -65°C) is acceptable for most industrial applications but should be verified for extreme cold-environment designs.
Mechanical Compatibility: Both parts use 4-circular through-hole configurations with identical pin spacing, enabling direct PCB footprint compatibility without layout modifications.
Frequently Asked Questions (FAQ)
Q: Can the 2W04G-E4/51 be used as a direct replacement for the CBR2-040 on existing PCBs?
A: Yes. Both parts use identical 4-circular through-hole pin configurations with matching electrical specifications. No PCB modifications are required.
Q: What is the difference between the A Case and WOG package designations?
A: Both designations refer to 4-circular through-hole bridge rectifier packages with identical mechanical dimensions and pin spacing. The different names reflect manufacturer nomenclature conventions but represent mechanically interchangeable packages.
Q: Are there any electrical performance differences between these parts?
A: The 2W04G-E4/51 demonstrates lower reverse leakage current (5 µA versus 10 µA at 400 V), indicating superior performance. All other electrical parameters are equivalent.
Q: Does the lower minimum operating temperature of the 2W04G-E4/51 affect compatibility?
A: The substitute operates from -55°C to 150°C versus -65°C to 150°C for the original. For applications requiring operation below -55°C, the original specification must be maintained. For standard industrial temperature ranges, this difference is not limiting.
Q: What compliance certifications apply to the 2W04G-E4/51?
A: The substitute is RoHS3 compliant and REACH unaffected. Both parts share EAR99 export classification and 8541.10.0080 HTSUS code.
Q: Is the 2W04G-E4/51 currently available?
A: Yes. The substitute maintains active product status with 3528 units in stock, ensuring production availability compared to the obsolete CBR2-040.
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