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1N3613 Equivalent & Substitute Parts
Part Overview
The 1N3613 is a general-purpose rectifier diode manufactured by Microchip Technology, rated for 600 V DC reverse voltage and 1 A average rectified current. This through-hole axial package diode operates across a junction temperature range of -65°C to 175°C and features standard recovery characteristics with reverse recovery time exceeding 500 ns. The part is currently active in production with 638 pieces in stock.
Substitute parts are necessary when the original 1N3613 becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design specifications permit the use of functionally equivalent components with enhanced performance characteristics or improved compliance certifications.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - DC Reverse (Vr) (Max) | 600 | V |
| Current - Average Rectified (Io) | 1 | A |
| Voltage - Forward (Vf) (Max) @ If | 1.1 | V @ 1 A |
| Speed | Standard Recovery >500ns, > 200mA (Io) | - |
| Current - Reverse Leakage @ Vr | 1 | µA @ 600 V |
| Mounting Type | Through Hole | - |
| Package / Case | A, Axial | - |
| Operating Temperature - Junction | -65 to 175 | °C |
| RoHS Status | RoHS non-compliant | - |
Substitute Part Grouping Explanation
Substitution of the 1N3613 is determined by the following critical electrical and mechanical parameters:
Electrical Equivalence Criteria:
- Voltage - DC Reverse (Vr) (Max): 600 V minimum
- Current - Average Rectified (Io): 1 A minimum
- Voltage - Forward (Vf) (Max) @ If: 1.1 V or lower at 1 A
- Speed classification: Standard or Fast Recovery acceptable
- Current - Reverse Leakage @ Vr: 5 µA or lower at 600 V
Mechanical Compatibility Criteria:
- Mounting Type: Through Hole required
- Package / Case: Axial packages (A, DO-204AL, DO-204AC, DO-41) acceptable
- Operating Temperature - Junction: -65°C minimum to 150°C or higher
Substitute parts are grouped into two categories based on recovery speed: Standard Recovery diodes (1N4005 series) and Fast Recovery diodes (1N4937 series). All listed substitutes meet or exceed the electrical specifications of the 1N3613 while offering improved RoHS3 compliance and enhanced reverse recovery characteristics.
Parameter Comparison
| Part Number | Manufacturer | Vr (Max) V | Io (A) | Vf (Max) @ 1A (V) | Speed | Reverse Leakage @ 600V (µA) | Package | Temp Range (°C) | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|
| 1N3613 | Microchip Technology | 600 | 1 | 1.1 | Standard >500ns | 1 | A, Axial | -65 to 175 | Non-compliant |
| 1N4005-E3/73 | Vishay General Semiconductor | 600 | 1 | 1.1 | Standard >500ns | 5 | DO-204AL (DO-41) | -55 to 150 | ROHS3 Compliant |
| 1N4005GPE-E3/53 | Vishay General Semiconductor | 600 | 1 | 1.1 | Standard >500ns | 5 | DO-204AL (DO-41) | -65 to 175 | ROHS3 Compliant |
| 1N4385GP-E3/54 | Vishay General Semiconductor | 600 | 1 | 1.0 | Standard >500ns | 5 | DO-204AC (DO-15) | -65 to 175 | ROHS3 Compliant |
| 1N4937-E3/54 | Vishay General Semiconductor | 600 | 1 | 1.2 | Fast ≤500ns | 5 | DO-204AL (DO-41) | -50 to 150 | ROHS3 Compliant |
| 1N4937-E3/73 | Vishay General Semiconductor | 600 | 1 | 1.2 | Fast ≤500ns | 5 | DO-204AL (DO-41) | -50 to 150 | ROHS3 Compliant |
| 1N4937-T | Diodes Incorporated | 600 | 1 | 1.2 | Fast ≤500ns | 5 | DO-204AL (DO-41) | -65 to 150 | ROHS3 Compliant |
| 1N4937G | Taiwan Semiconductor Corporation | 600 | 1 | 1.2 | Fast ≤500ns | 5 | DO-204AL (DO-41) | -55 to 150 | ROHS3 Compliant |
| 1N4937GP-E3/54 | Vishay General Semiconductor | 600 | 1 | 1.2 | Fast ≤500ns | 5 | DO-204AL (DO-41) | -65 to 175 | ROHS3 Compliant |
| 1N4937GP-E3/73 | Vishay General Semiconductor | 600 | 1 | 1.2 | Fast ≤500ns | 5 | DO-204AL (DO-41) | -65 to 175 | ROHS3 Compliant |
| 1N4937RLG | onsemi | 600 | 1 | 1.2 | Fast ≤500ns | 5 | DO-204AL (DO-41) | -65 to 150 | ROHS3 Compliant |
Engineering Selection Recommendations
For Standard Recovery Applications:
The 1N4005GPE-E3/53 manufactured by Vishay General Semiconductor is the primary equivalent substitute. This part maintains identical electrical specifications to the 1N3613 (600 V, 1 A, 1.1 V forward voltage) while offering ROHS3 compliance and an extended junction temperature range of -65°C to 175°C, matching the original part's thermal capabilities. The 1N4005-E3/73 variant is also suitable but operates within a reduced temperature range of -55°C to 150°C.
The 1N4385GP-E3/54 provides an alternative in the DO-204AC (DO-15) package format with superior forward voltage characteristics (1.0 V at 1 A) and full temperature range compatibility (-65°C to 175°C). This part is appropriate when package geometry constraints permit the smaller DO-15 form factor.
For Fast Recovery Applications:
The 1N4937GP-E3/54 and 1N4937GP-E3/73 manufactured by Vishay General Semiconductor are recommended for designs requiring enhanced switching performance. Both parts feature fast recovery characteristics (≤500 ns) with 200 ns reverse recovery time, ROHS3 compliance, and full temperature range operation (-65°C to 175°C). These parts are suitable for high-frequency rectification circuits where the 1N3613's standard recovery speed is insufficient.
The 1N4937-T from Diodes Incorporated and 1N4937RLG from onsemi provide alternative fast recovery sources with comparable electrical performance. The 1N4937-T extends the lower temperature limit to -65°C, while 1N4937RLG is designated as "Not For New Designs" and should be used only for legacy system maintenance.
Compliance Considerations:
All recommended substitutes are ROHS3 compliant, addressing the non-compliant status of the original 1N3613. This compliance improvement is significant for applications subject to environmental regulations or customer requirements mandating lead-free components.
Frequently Asked Questions (FAQ)
Q: Can the 1N4005 series directly replace the 1N3613 in all applications?
A: The 1N4005 series maintains electrical equivalence with the 1N3613 across voltage, current, and forward voltage specifications. However, the 1N4005-E3/73 operates within a reduced temperature range (-55°C to 150°C) compared to the 1N3613 (-65°C to 175°C). The 1N4005GPE-E3/53 variant matches the full temperature range. Verify application temperature requirements before selection.
Q: What is the difference between Standard Recovery and Fast Recovery diodes?
A: Standard Recovery diodes (1N4005 series) exhibit reverse recovery times exceeding 500 ns, suitable for low-frequency rectification and general-purpose applications. Fast Recovery diodes (1N4937 series) feature reverse recovery times of 200-300 ns, enabling operation at higher switching frequencies with reduced switching losses. Fast Recovery diodes are appropriate for switched-mode power supplies and high-frequency inverter circuits.
Q: Are package differences between DO-204AL (DO-41) and DO-204AC (DO-15) significant?
A: Both packages are through-hole axial configurations with identical electrical performance. The DO-204AC (DO-15) package is physically smaller than DO-204AL (DO-41). Package selection depends on printed circuit board layout constraints and mechanical assembly requirements. Electrical substitution is valid between these packages provided board layout accommodates the physical dimensions.
Q: Why do substitute parts show higher reverse leakage current (5 µA vs. 1 µA)?
A: The 1N3613 specifies 1 µA reverse leakage at 600 V, while substitute parts specify 5 µA at the same voltage. This difference reflects manufacturing process variations and specification tolerances across different manufacturers. For most general-purpose rectification applications, this difference is negligible. Applications with stringent leakage requirements should evaluate the specific circuit impact before substitution.
Q: Is the 1N4937RLG suitable for new designs?
A: The 1N4937RLG is designated as "Not For New Designs" by onsemi. This designation indicates the manufacturer is discontinuing the part and recommends alternative sources for new product development. Use this part only for legacy system maintenance or repair of existing equipment. For new designs, select from the active product status alternatives: 1N4937GP-E3/54, 1N4937GP-E3/73, or 1N4937-T.
Q: What is the significance of ROHS3 compliance for the 1N3613 replacement?
A: The original 1N3613 is RoHS non-compliant, indicating it may contain lead or other restricted substances. All recommended substitutes are ROHS3 compliant, meeting the Restriction of Hazardous Substances Directive requirements. This compliance is mandatory for products sold in the European Union and increasingly required by global customers. Substitution to ROHS3-compliant parts ensures regulatory compliance and future supply chain compatibility.
Q: Can I use the 1N4385GP-E3/54 (DO-204AC) as a direct mechanical substitute?
A: The 1N4385GP-E3/54 is electrically equivalent but uses the DO-204AC (DO-15) package instead of the axial A package of the 1N3613. While both are through-hole axial packages, the DO-15 form factor is physically smaller. Mechanical substitution requires verification that the printed circuit board layout and component spacing accommodate the smaller package dimensions. Electrical performance is fully compatible.
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