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P6SMB36CA-M3/5B Equivalent & Substitute Parts
Part Overview
The P6SMB36CA-M3/5B is a bidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 30.8V reverse standoff voltage range with a 49.9V maximum clamping voltage and 12A peak pulse current rating. The device is designed for general-purpose transient voltage suppression applications and is classified as Active product status. Equivalent and substitute parts are identified based on matching electrical characteristics, mechanical compatibility, and packaging specifications to ensure direct interchangeability in circuit designs.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Vishay General Semiconductor - Diodes Division |
| Part Number | P6SMB36CA-M3/5B |
| Category | Transient Voltage Suppressors (TVS) |
| Type | Zener |
| Voltage - Reverse Standoff (Typ) | 30.8V |
| Voltage - Breakdown (Min) | 34.2V |
| Voltage - Clamping (Max) @ Ipp | 49.9V |
| Current - Peak Pulse (10/1000µs) | 12A |
| Power - Peak Pulse | 600W |
| Package / Case | DO-214AA, SMB |
| Mounting Type | Surface Mount |
| Operating Temperature | -65°C ~ 150°C (TJ) |
| RoHS Status | ROHS3 Compliant |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitute parts for the P6SMB36CA-M3/5B are grouped based on strict electrical and mechanical parameter matching. The primary substitution criteria are:
Critical Matching Parameters:
- Voltage - Reverse Standoff (Typ): 30.8V
- Voltage - Breakdown (Min): 34.2V
- Voltage - Clamping (Max) @ Ipp: 49.9V
- Package / Case: DO-214AA, SMB
- Mounting Type: Surface Mount
- Bidirectional Channels: 1
Substitution Categories:
Category 1: Direct Electrical & Packaging Equivalents — Parts with identical voltage ratings, clamping voltage, and DO-214AA SMB package. These include P6SMB36CA-E3/52, P6SMB36CA-E3/5B (Vishay variants with different packaging formats), P6SMB36CA (Good-Ark Semiconductor), SMBJP6KE36CA-TP (Micro Commercial Co), SZP6SMB36CAT3G (Littelfuse), and TPSMB36CA (Littelfuse). These parts differ only in packaging format (Tape & Reel vs. Cut Tape) or manufacturer source while maintaining identical electrical performance.
Category 2: Enhanced Performance Equivalents — The 1KSMB36CA (Taiwan Semiconductor Corporation) maintains identical voltage specifications but provides higher peak pulse current (20A vs. 12A) and increased power dissipation (1000W vs. 600W), making it suitable for applications requiring higher transient energy absorption.
Category 3: Voltage-Variant Equivalents — The SM6T36CA and SM6T36CAY (STMicroelectronics) share the same reverse standoff voltage (30.8V) and breakdown voltage (34.2V) but feature a higher clamping voltage (64.3V vs. 49.9V) and significantly higher peak pulse current (62A at 8/20µs vs. 12A at 10/1000µs). These are suitable only when higher clamping voltage is acceptable in the application.
Parameter Comparison
| Part Number | Manufacturer | Voltage - Reverse Standoff (Typ) | Voltage - Breakdown (Min) | Voltage - Clamping (Max) @ Ipp | Current - Peak Pulse | Power - Peak Pulse | Package | Operating Temperature | Product Status |
|---|---|---|---|---|---|---|---|---|---|
| P6SMB36CA-M3/5B | Vishay | 30.8V | 34.2V | 49.9V | 12A (10/1000µs) | 600W | DO-214AA, SMB | -65°C ~ 150°C | Active |
| P6SMB36CA-E3/52 | Vishay | 30.8V | 34.2V | 49.9V | 12A (10/1000µs) | 600W | DO-214AA, SMB | -65°C ~ 150°C | Active |
| P6SMB36CA-E3/5B | Vishay | 30.8V | 34.2V | 49.9V | 12A (10/1000µs) | 600W | DO-214AA, SMB | -65°C ~ 150°C | Active |
| 1KSMB36CA | Taiwan Semiconductor Corporation | 30.8V | 34.2V | 49.9V | 20A (10/1000µs) | 1000W | DO-214AA, SMB | -55°C ~ 175°C | Active |
| P6SMB36CA | Good-Ark Semiconductor | 30.8V | 34.2V | 49.9V | 12A (10/1000µs) | 600W | DO-214AA, SMB | -55°C ~ 150°C | Active |
| SM6T36CA | STMicroelectronics | 30.8V | 34.2V | 64.3V | 62A (8/20µs) | 600W | DO-214AA, SMB | -55°C ~ 150°C | Active |
| SM6T36CAY | STMicroelectronics | 30.8V | 34.2V | 64.3V | 62A (8/20µs) | 600W | DO-214AA, SMB | -55°C ~ 150°C | Active |
| SMBJP6KE36CA-TP | Micro Commercial Co | 30.8V | 34.2V | 49.9V | 12.2A (10/1000µs) | 600W | DO-214AA, SMB | -55°C ~ 175°C | Active |
| SZP6SMB36CAT3G | Littelfuse Inc. | 30.8V | 34.2V | 49.9V | 12A (10/1000µs) | 600W | DO-214AA, SMB | -65°C ~ 150°C | Active |
| TPSMB36CA | Littelfuse Inc. | 30.8V | 34.2V | 49.9V | 12.2A (10/1000µs) | 600W | DO-214AA, SMB | -65°C ~ 175°C | Active |
Engineering Selection Recommendations
Direct Substitutes (Recommended for Standard Applications):
P6SMB36CA-E3/52 and P6SMB36CA-E3/5B are direct Vishay equivalents differing only in packaging format (Tape & Reel). These maintain identical electrical specifications and operating temperature range and are suitable for direct replacement in existing designs.
P6SMB36CA (Good-Ark Semiconductor) and SZP6SMB36CAT3G (Littelfuse) provide equivalent electrical performance with identical voltage and current ratings. Both are ROHS3 compliant and Active status. SZP6SMB36CAT3G includes AEC-Q101 automotive qualification and operates across the full temperature range (-65°C ~ 150°C) matching the original part.
SMBJP6KE36CA-TP (Micro Commercial Co) and TPSMB36CA (Littelfuse) provide equivalent performance with marginally higher peak pulse current (12.2A vs. 12A) and extended upper operating temperature (-55°C ~ 175°C). Both are ROHS3 compliant and Active status.
Enhanced Performance Substitute:
1KSMB36CA (Taiwan Semiconductor Corporation) is suitable when higher transient energy absorption is required. It maintains identical voltage specifications but provides 20A peak pulse current and 1000W power dissipation versus 12A and 600W in the original part. Operating temperature range extends to 175°C. This part is ROHS3 compliant and Active status.
Voltage-Variant Substitutes (Application-Dependent):
SM6T36CA and SM6T36CAY (STMicroelectronics) feature higher clamping voltage (64.3V) and significantly higher peak pulse current (62A at 8/20µs pulse width). SM6T36CAY includes AEC-Q101 automotive qualification. These parts are suitable only when the application circuit design accepts higher clamping voltage. Both are ROHS3 compliant and Active status.
Frequently Asked Questions (FAQ)
Q: Can P6SMB36CA-E3/52 directly replace P6SMB36CA-M3/5B?
A: Yes. Both parts are manufactured by Vishay and share identical electrical specifications: 30.8V reverse standoff voltage, 34.2V breakdown voltage, 49.9V clamping voltage, and 12A peak pulse current. The difference is packaging format (Tape & Reel vs. Tape & Box). Electrical performance and circuit behavior are identical.
Q: What is the difference between the Vishay P6SMB36CA variants and the Good-Ark P6SMB36CA?
A: Both maintain identical electrical specifications and DO-214AA SMB package. The primary difference is manufacturer source. Vishay variants operate across -65°C ~ 150°C, while Good-Ark operates -55°C ~ 150°C. Both are ROHS3 compliant and Active status. Selection depends on supply chain availability and manufacturer preference.
Q: When should I use 1KSMB36CA instead of P6SMB36CA-M3/5B?
A: Use 1KSMB36CA when the application requires higher transient energy absorption. It provides 20A peak pulse current and 1000W power dissipation compared to 12A and 600W in the original part, while maintaining identical voltage ratings. Operating temperature extends to 175°C. Verify circuit design accepts the enhanced performance specifications.
Q: Are SM6T36CA and SM6T36CAY suitable direct replacements?
A: No. While both share the same 30.8V reverse standoff and 34.2V breakdown voltages, they feature significantly higher clamping voltage (64.3V vs. 49.9V) and peak pulse current (62A vs. 12A). These parts are suitable only if the application circuit design accepts higher clamping voltage. Verify circuit requirements before substitution.
Q: What is the difference between SMBJP6KE36CA-TP and TPSMB36CA?
A: Both parts provide equivalent performance with 12.2A peak pulse current and 49.9V clamping voltage. SMBJP6KE36CA-TP is manufactured by Micro Commercial Co, while TPSMB36CA is manufactured by Littelfuse. Both operate across -55°C ~ 175°C and are ROHS3 compliant. Selection depends on supply chain availability.
Q: Do all substitute parts have the same package compatibility?
A: Yes. All listed substitute parts use DO-214AA SMB surface mount package, ensuring mechanical and footprint compatibility with the original P6SMB36CA-M3/5B design. No PCB layout modifications are required for direct substitution within the same electrical performance category.
Q: Which substitute parts include automotive qualification?
A: SZP6SMB36CAT3G (Littelfuse) and SM6T36CAY (STMicroelectronics) include AEC-Q101 automotive qualification. These parts are suitable for automotive applications requiring formal qualification compliance.
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