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SMBJ36C-E3/5B Equivalent & Substitute Parts
Part Overview
The SMBJ36C-E3/5B is a transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, designed for general-purpose overvoltage protection in surface-mount applications. This part operates with a 36V reverse standoff voltage and provides clamping at 64.3V maximum. The SMBJ36C-E3/5B is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production support. Substitute parts must maintain electrical compatibility across voltage ratings, current handling, and thermal operating ranges while meeting the same packaging and compliance standards.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Voltage - Reverse Standoff (Typ) | 36V |
| Voltage - Breakdown (Min) | 40V |
| Voltage - Clamping (Max) @ Ipp | 64.3V |
| Current - Peak Pulse (10/1000µs) | 9.3A |
| Power - Peak Pulse | 600W |
| Operating Temperature Range | -55°C ~ 150°C (TJ) |
| Package / Case | DO-214AA, SMB |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the SMBJ36C-E3/5B is determined by strict electrical and mechanical compatibility. All substitute parts must meet the following criteria:
- Reverse standoff voltage of 36V (±tolerance as specified by manufacturer)
- Breakdown voltage minimum of 40V
- Clamping voltage maximum of 64.3V or lower (lower clamping voltage provides improved protection margin)
- Peak pulse current of 9.3A or higher
- Peak pulse power rating of 600W
- Surface-mount package in DO-214AA or SMB form factor
- Operating temperature range of -55°C to 150°C minimum
- ROHS3 compliance and MSL 1 rating
Substitute parts are grouped into two categories based on electrical performance: direct electrical equivalents (matching 64.3V clamping voltage and 9.3A current) and performance-enhanced alternatives (lower clamping voltage with higher current capability, providing superior transient suppression).
Parameter Comparison
| Part Number | Manufacturer | Voltage - Clamping (Max) @ Ipp | Current - Peak Pulse (10/1000µs) | Operating Temperature | Product Status | Packaging |
|---|---|---|---|---|---|---|
| SMBJ36C-E3/5B | Vishay General Semiconductor | 64.3V | 9.3A | -55°C ~ 150°C | Obsolete | DO-214AA (SMBJ) |
| SMBJ36CA-E3/5B | Vishay General Semiconductor | 58.1V | 10.3A | -55°C ~ 150°C | Active | DO-214AA (SMBJ), Tape & Reel |
| SMBJ36CE3/TR13 | Microchip Technology | 64.3V | 9.3A | -65°C ~ 150°C | Active | SMBJ (DO-214AA), Tape & Reel |
| 1SMB36CA TR13 PBFREE | Central Semiconductor Corp | 58.1V | 10.3A | -65°C ~ 150°C | Active | SMB, Tape & Reel |
| SM6T42CAY | STMicroelectronics | 76V | 52A (8/20µs) | -55°C ~ 150°C | Active | SMB (DO-214AA), Tape & Reel |
| SMBJ36CA | MDD | 58.1V | 10.4A | -50°C ~ 150°C | Active | SMB/DO-214AA |
| SMBJ36CA-13-F | Diodes Incorporated | 58.1V | 10.3A | -55°C ~ 150°C | Active | SMB, Cut Tape & Digi-Reel |
| SMBJ36CA-HR | Littelfuse Inc. | 58.1V | 10.4A | -65°C ~ 150°C | Active | DO-214AA (SMBJ), Tape & Reel |
Engineering Selection Recommendations
Direct Electrical Equivalent (Preferred for Pin-Compatible Replacement):
SMBJ36CE3/TR13 (Microchip Technology) provides identical electrical performance to the obsolete SMBJ36C-E3/5B with matching 64.3V clamping voltage and 9.3A peak pulse current. This part is active in production, ROHS3 compliant, and extends the operating temperature range to -65°C, offering improved low-temperature performance. The extended temperature range and active product status make this the primary recommendation for direct substitution.
Performance-Enhanced Alternatives (Lower Clamping Voltage):
SMBJ36CA-E3/5B (Vishay General Semiconductor), 1SMB36CA TR13 PBFREE (Central Semiconductor Corp), SMBJ36CA-13-F (Diodes Incorporated), and SMBJ36CA-HR (Littelfuse Inc.) all feature reduced clamping voltage of 58.1V with increased peak pulse current of 10.3A to 10.4A. These parts provide superior transient suppression due to lower clamping voltage while maintaining the same 36V standoff rating. All are active in production and ROHS3 compliant. Selection among these alternatives depends on packaging preference (tape & reel availability) and thermal requirements.
High-Performance Alternative (Enhanced Current Capability):
SM6T42CAY (STMicroelectronics) is an automotive-grade TVS diode with AEC-Q101 qualification, featuring 76V clamping voltage and 52A peak pulse current (8/20µs pulse). This part is suitable only for applications where higher clamping voltage is acceptable and enhanced current handling is required. The automotive qualification and higher current rating distinguish this as a specialized alternative rather than a direct replacement.
Frequently Asked Questions (FAQ)
Q: Can SMBJ36CA-E3/5B replace SMBJ36C-E3/5B directly?
A: Yes, with electrical performance improvement. SMBJ36CA-E3/5B maintains the same 36V standoff voltage and 600W peak pulse power rating. The reduced clamping voltage (58.1V vs. 64.3V) and increased peak pulse current (10.3A vs. 9.3A) provide enhanced overvoltage protection. Both parts use identical DO-214AA packaging and are ROHS3 compliant. The primary difference is product status: SMBJ36CA-E3/5B is active while the original is obsolete.
Q: What is the difference between SMBJ36CE3/TR13 and SMBJ36CA-E3/5B?
A: SMBJ36CE3/TR13 (Microchip) matches the original part's electrical specifications exactly: 64.3V clamping voltage and 9.3A peak pulse current. SMBJ36CA-E3/5B (Vishay) offers improved performance with 58.1V clamping and 10.3A current. SMBJ36CE3/TR13 is the better choice for applications requiring identical electrical behavior; SMBJ36CA-E3/5B is preferred when improved transient suppression is beneficial.
Q: Are all substitute parts available in tape & reel packaging?
A: Most substitute parts are available in tape & reel (TR) packaging for automated assembly. SMBJ36CA (MDD) is listed without specific packaging designation. SMBJ36CA-13-F (Diodes Incorporated) is available in Cut Tape & Digi-Reel format. Verify packaging availability with your supplier before design finalization.
Q: Can SM6T42CAY be used as a direct replacement?
A: SM6T42CAY is not a direct replacement due to its 76V clamping voltage, which exceeds the original part's 64.3V specification. This higher clamping voltage may not provide adequate protection in circuits designed for the lower threshold. SM6T42CAY is suitable only for applications where higher clamping voltage is acceptable and the enhanced 52A current capability is required.
Q: What is the minimum operating temperature requirement for substitute selection?
A: The original SMBJ36C-E3/5B operates from -55°C. Most substitute parts maintain this minimum or extend it to -65°C (SMBJ36CE3/TR13, 1SMB36CA TR13 PBFREE, SMBJ36CA-HR), providing improved low-temperature performance. SMBJ36CA (MDD) has a minimum of -50°C, which is acceptable for most applications but slightly narrower than the original specification.
Q: Are all substitute parts ROHS3 compliant?
A: Yes, all listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the original part's compliance profile. This ensures compatibility with modern manufacturing processes and environmental regulations.
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