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P6SMB6.8CA-M3/52 Equivalent & Substitute Parts
Part Overview
The P6SMB6.8CA-M3/52 is a transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the DO-214AA (SMB) package and provides bidirectional transient protection with a 5.8V reverse standoff voltage and 10.5V maximum clamping voltage. The part is Active status and RoHS3 compliant, making it suitable for general-purpose transient voltage suppression applications. Equivalent and substitute parts are identified based on matching electrical performance parameters and mechanical compatibility within the TVS diode category.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Voltage - Reverse Standoff (Typ) | 5.8V |
| Voltage - Breakdown (Min) | 6.45V |
| Voltage - Clamping (Max) @ Ipp | 10.5V |
| Current - Peak Pulse (10/1000µs) | 57.1A |
| Power - Peak Pulse | 600W |
| Package / Case | DO-214AA, SMB |
| Mounting Type | Surface Mount |
| Operating Temperature | -65°C ~ 150°C (TJ) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the P6SMB6.8CA-M3/52 are classified based on the following substitution criteria:
Primary Substitution Criteria:
- Voltage - Reverse Standoff (Typ): 5.8V
- Voltage - Clamping (Max) @ Ipp: 10.5V
- Package / Case: DO-214AA, SMB
- Mounting Type: Surface Mount
- Bidirectional Channels: 1
- Type: Zener
Grouping Logic:
Group 1 - Direct Electrical & Packaging Match (Packaging Variant Only): Parts with identical electrical specifications and DO-214AA SMB package but different packaging format (Tape & Reel vs. Tape & Box).
Group 2 - Electrical Match with Enhanced Performance: Parts meeting the core voltage specifications (5.8V standoff, 10.5V clamping) and DO-214AA SMB package, with variations in peak pulse current and power dissipation capacity.
Group 3 - Voltage Match with Different Clamping Characteristics: Parts with matching reverse standoff voltage (5.8V) and DO-214AA SMB package but with higher clamping voltage and peak pulse current specifications.
Parameter Comparison
| Part Number | Manufacturer | Voltage - Reverse Standoff (Typ) | Voltage - Clamping (Max) @ Ipp | Current - Peak Pulse (10/1000µs) | Power - Peak Pulse | Package / Case | Operating Temperature | RoHS Status |
|---|---|---|---|---|---|---|---|---|
| P6SMB6.8CA-M3/52 | Vishay General Semiconductor - Diodes Division | 5.8V | 10.5V | 57.1A | 600W | DO-214AA, SMB | -65°C ~ 150°C | ROHS3 Compliant |
| P6SMB6.8CA-E3/52 | Vishay General Semiconductor - Diodes Division | 5.8V | 10.5V | 57.1A | 600W | DO-214AA, SMB | -65°C ~ 150°C | ROHS3 Compliant |
| 1KSMB6.8CA | Littelfuse Inc. | 5.8V | 10.5V | 95.2A | 1000W (1kW) | DO-214AA, SMB | -55°C ~ 150°C | ROHS3 Compliant |
| P6SMB6.8CA | Taiwan Semiconductor Corporation | 5.8V | 10.5V | 60A | 600W | DO-214AA, SMB | -55°C ~ 150°C | ROHS3 Compliant |
| SM6T6V8CA | STMicroelectronics | 5.8V | 13.4V | 298A (8/20µs) | 600W | DO-214AA, SMB | -55°C ~ 150°C | ROHS3 Compliant |
| SM6T6V8CAY | STMicroelectronics | 5.8V | 13.4V | 298A (8/20µs) | 600W | DO-214AA, SMB | -55°C ~ 150°C | ROHS3 Compliant |
| SMBJP6KE6.8CA-TP | Micro Commercial Co | 5.8V | 10.5V | 58.1A | 600W | DO-214AA, SMB | -55°C ~ 175°C | ROHS3 Compliant |
Engineering Selection Recommendations
Direct Substitution (Identical Electrical Performance):
P6SMB6.8CA-E3/52 (Vishay) is a direct substitute differing only in packaging format (Tape & Reel vs. Tape & Box). Both parts maintain identical electrical specifications and operating temperature range. Selection between these variants depends on procurement and assembly requirements.
Enhanced Performance Substitutes (Voltage Match, Increased Current Capacity):
1KSMB6.8CA (Littelfuse) and P6SMB6.8CA (Taiwan Semiconductor Corporation) maintain the 5.8V reverse standoff and 10.5V clamping voltage specifications. The Littelfuse variant provides 95.2A peak pulse current and 1000W power dissipation compared to the original 57.1A and 600W. The Taiwan Semiconductor variant provides 60A peak pulse current. Both are RoHS3 compliant and Active status. Operating temperature range is -55°C to 150°C (compared to -65°C to 150°C for the original).
SMBJP6KE6.8CA-TP (Micro Commercial Co) matches the original electrical specifications with 58.1A peak pulse current and extends the operating temperature range to -55°C ~ 175°C. RoHS3 compliant and Active status.
Alternative Performance Profile (Higher Clamping Voltage):
SM6T6V8CA and SM6T6V8CAY (STMicroelectronics) maintain the 5.8V reverse standoff voltage but feature a higher 13.4V maximum clamping voltage and significantly higher peak pulse current (298A at 8/20µs pulse). These parts are suitable for applications requiring enhanced transient suppression capability. SM6T6V8CAY includes AEC-Q101 automotive qualification. Both are RoHS3 compliant and Active status with -55°C to 150°C operating temperature range.
Frequently Asked Questions (FAQ)
Q: Can P6SMB6.8CA-E3/52 be used as a direct replacement for P6SMB6.8CA-M3/52?
A: Yes. Both parts are manufactured by Vishay and share identical electrical specifications: 5.8V reverse standoff voltage, 10.5V clamping voltage, 57.1A peak pulse current, and 600W power dissipation. The difference is packaging format (Tape & Reel vs. Tape & Box). Electrical performance and thermal characteristics are equivalent.
Q: What is the difference between the Littelfuse 1KSMB6.8CA and the original P6SMB6.8CA-M3/52?
A: Both maintain the same voltage specifications (5.8V standoff, 10.5V clamping). The Littelfuse part provides higher peak pulse current (95.2A vs. 57.1A) and power dissipation (1000W vs. 600W). Operating temperature range is -55°C to 150°C compared to -65°C to 150°C. The higher current and power ratings make it suitable for applications with more severe transient events.
Q: Are the STMicroelectronics SM6T6V8CA and SM6T6V8CAY suitable substitutes?
A: These parts share the 5.8V reverse standoff voltage and DO-214AA SMB package. However, they feature a higher 13.4V maximum clamping voltage and significantly higher peak pulse current (298A). They are suitable only if the application can tolerate the higher clamping voltage. SM6T6V8CAY includes AEC-Q101 automotive qualification for automotive applications.
Q: What is the operating temperature difference between substitutes?
A: The original P6SMB6.8CA-M3/52 operates from -65°C to 150°C. Most substitutes operate from -55°C to 150°C, providing a narrower low-temperature range. SMBJP6KE6.8CA-TP extends the upper range to 175°C. Verify application requirements before selection.
Q: Do all substitute parts maintain RoHS3 compliance?
A: Yes. All listed substitute parts are RoHS3 compliant and carry Active product status, matching the compliance profile of the original P6SMB6.8CA-M3/52.
Q: Can I use a substitute with higher peak pulse current in a design rated for 57.1A?
A: Yes. Higher peak pulse current ratings provide additional margin and do not create compatibility issues. The part will suppress transients within the original design specification while offering enhanced capability for more severe transient events.
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