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P6SMB62C Equivalent & Substitute Parts
Part Overview
The P6SMB62C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This bidirectional Zener diode operates with a 53V reverse standoff voltage and provides 89.25V maximum clamping voltage at peak pulse current. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | P6SMB62C |
| Manufacturer | Littelfuse Inc. |
| Category | Transient Voltage Suppressors (TVS) |
| Type | Zener |
| Bidirectional Channels | 1 |
| Voltage - Reverse Standoff (Typ) | 53V |
| Voltage - Breakdown (Min) | 55.8V |
| Voltage - Clamping (Max) @ Ipp | 89.25V |
| Current - Peak Pulse (10/1000µs) | 7.2A |
| Power - Peak Pulse | 600W |
| Operating Temperature | -55°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | DO-214AA, SMB |
| RoHS Status | ROHS3 Compliant |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution of the P6SMB62C is determined by the following critical electrical and mechanical parameters:
Primary Substitution Criteria:
- Reverse standoff voltage: 53V (±tolerance)
- Bidirectional Zener type with single channel
- Surface-mount package: DO-214AA (SMB form factor)
- Peak pulse power rating: 600W
- Operating temperature range compatibility: minimum -55°C to 150°C
Secondary Compatibility Factors:
- Clamping voltage at peak pulse current (89.25V nominal for P6SMB62C; 85V acceptable for active substitutes)
- Peak pulse current rating: 7.2A (±tolerance)
- RoHS3 compliance and MSL 1 rating
Substitute parts are grouped into two categories: direct electrical equivalents with identical clamping characteristics, and functional alternatives with slightly lower clamping voltages but equivalent standoff and breakdown specifications. All listed substitutes maintain the same package footprint and thermal operating range.
Parameter Comparison
| Parameter | P6SMB62C (Main) | P6SMB62CA (Eaton) | SZP6SMB62CAT3G (Littelfuse) | P6SMB62CA-E3/52 (Vishay) | SMBJP6KE62CA-TP (MCC) | SM6T68CA (STMicroelectronics) | TVP06B620CA-G (Comchip) |
|---|---|---|---|---|---|---|---|
| Voltage - Reverse Standoff (Typ) | 53V | 53V | 53V | 53V | 53V | 58.1V | — |
| Voltage - Breakdown (Min) | 55.8V | 58.9V | 58.9V | 58.9V | 58.9V | 64.6V | — |
| Voltage - Clamping (Max) @ Ipp | 89.25V | 85V | 85V | 85V | 85V | 121V | — |
| Current - Peak Pulse (10/1000µs) | 7.2A | 7.2A | 7.1A | 7.1A | 7.2A | 33A (8/20µs) | — |
| Power - Peak Pulse | 600W | 600W | 600W | 600W | 600W | 600W | 600W |
| Operating Temperature | -55°C ~ 150°C | -55°C ~ 150°C | -65°C ~ 150°C | -65°C ~ 150°C | -55°C ~ 175°C | -55°C ~ 150°C | -55°C ~ 150°C |
| Package / Case | DO-214AA, SMB | DO-214AA, SMB | DO-214AA, SMB | DO-214AA, SMB | DO-214AA, SMB | DO-214AA, SMB | DO-214AA, SMB |
| RoHS Status | ROHS3 Compliant | RoHS Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
Tier 1 - Direct Electrical Equivalents (Preferred for Obsolescence Replacement):
P6SMB62CA (Eaton - Electronics Division) and P6SMB62CA-E3/52 (Vishay General Semiconductor) are the primary substitutes. Both maintain 53V reverse standoff voltage, 85V clamping voltage, and 7.2A peak pulse current. Eaton's version is available in high volume (61,400 pcs) with active product status. Vishay's variant includes ROHS3 compliance and extended temperature range (-65°C to 150°C), suitable for automotive applications.
Tier 2 - Manufacturer-Recommended Alternatives:
SZP6SMB62CAT3G (Littelfuse Inc.) is the manufacturer-recommended substitute from the original supplier. This part carries AEC-Q101 automotive qualification and extended temperature range (-65°C to 150°C), making it suitable for demanding environments. Current inventory is 1,583 pcs.
SMBJP6KE62CA-TP (Micro Commercial Co) provides equivalent electrical performance with extended upper temperature limit (-55°C to 175°C). This part is available in 3,424 pcs and maintains full compatibility with the original footprint.
Tier 3 - Functional Alternatives (Higher Clamping Voltage):
SM6T68CA (STMicroelectronics) operates at 58.1V reverse standoff with 121V clamping voltage and significantly higher peak pulse current (33A at 8/20µs). This part is suitable only for applications where higher clamping voltage and current capacity are acceptable. High inventory availability (31,797 pcs) supports procurement flexibility.
Tier 4 - Incomplete Specification:
TVP06B620CA-G (Comchip Technology) lacks complete electrical parameter documentation. Substitution with this part requires verification of voltage and current ratings against application requirements.
Frequently Asked Questions (FAQ)
Q: Can I use P6SMB62CA as a direct replacement for P6SMB62C?
A: Yes. Both parts share identical reverse standoff voltage (53V), peak pulse power (600W), and package form factor (DO-214AA SMB). The clamping voltage differs slightly (85V vs. 89.25V), which is within acceptable tolerance for most general-purpose overvoltage protection circuits. Verify your circuit's maximum allowable clamping voltage before selection.
Q: What is the difference between the Eaton and Vishay versions of P6SMB62CA?
A: Both maintain equivalent electrical specifications (53V standoff, 85V clamp, 7.2A peak pulse). Vishay's P6SMB62CA-E3/52 offers extended temperature range (-65°C to 150°C vs. -55°C to 150°C) and AEC-Q101 automotive qualification. Select Vishay for automotive or extreme temperature applications; select Eaton for standard industrial use with superior availability.
Q: Why does SM6T68CA have different voltage ratings?
A: SM6T68CA operates at 58.1V reverse standoff with 121V clamping voltage and 33A peak pulse current. These higher ratings make it unsuitable as a direct substitute unless your circuit design specifically requires higher clamping voltage and current capacity. Use only if application requirements explicitly allow higher voltage suppression levels.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All listed active substitutes carry ROHS3 compliance certification. The original P6SMB62C also meets ROHS3 standards. All parts maintain MSL 1 (Unlimited) moisture sensitivity rating.
Q: Which substitute offers the best long-term availability?
A: P6SMB62CA (Eaton) provides the highest inventory level (61,400 pcs) and active product status, ensuring sustained availability. SZP6SMB62CAT3G (Littelfuse) is the manufacturer-recommended option with automotive qualification, supporting long-term design continuity from the original supplier.
Q: Can I mix different substitute parts in the same circuit board?
A: All Tier 1 and Tier 2 substitutes (P6SMB62CA, P6SMB62CA-E3/52, SZP6SMB62CAT3G, SMBJP6KE62CA-TP) are electrically interchangeable within the same PCB assembly. Maintain consistent part selection per circuit board to simplify procurement, inventory management, and field service documentation.
Q: What packaging options are available for substitutes?
A: Substitute parts are supplied in Tape & Reel (TR) or Cut Tape (CT) packaging. All maintain the same DO-214AA (SMB) component footprint. Verify packaging format compatibility with your assembly equipment before procurement.
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