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P6SMB180AT3 Equivalent & Substitute Parts
Part Overview
The P6SMB180AT3 is a transient voltage suppressor (TVS) diode manufactured by onsemi, designed for surface mount applications in the DO-214AA (SMB) package. This unidirectional zener diode provides 246V clamping voltage with 2.4A peak pulse current capability and 600W peak pulse power dissipation. The device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Voltage - Reverse Standoff (Typ) | 154V |
| Voltage - Breakdown (Min) | 171V |
| Voltage - Clamping (Max) @ Ipp | 246V |
| Current - Peak Pulse (10/1000µs) | 2.4A |
| Power - Peak Pulse | 600W |
| Operating Temperature Range | -65°C ~ 150°C (TJ) |
| Package / Case | DO-214AA, SMB |
| Type | Zener |
| Unidirectional Channels | 1 |
Substitute Part Grouping Explanation
Substitution of the P6SMB180AT3 is determined by the following critical parameters:
- Voltage - Reverse Standoff (Typ): 154V ±tolerance
- Voltage - Clamping (Max) @ Ipp: 246V ±tolerance
- Current - Peak Pulse (10/1000µs): 2.4A minimum
- Power - Peak Pulse: 600W minimum
- Package / Case: DO-214AA (SMB) surface mount
- Operating Temperature Range: -65°C to 150°C (TJ) or compatible range
- Type: Unidirectional Zener diode
Substitute parts are grouped into two categories:
Direct Equivalents: Parts with identical electrical specifications and package, differing only in manufacturer or product status (active vs. obsolete).
Similar Alternatives: Parts with comparable voltage and clamping characteristics within acceptable engineering tolerances, potentially with higher current ratings or different temperature ranges, suitable for applications where the original specifications can be met or exceeded.
Parameter Comparison
| Part Number | Manufacturer | VWM (Typ) | VC (Max) | Ipp (A) | Power (W) | Temp Range (°C) | Package | Status | RoHS |
|---|---|---|---|---|---|---|---|---|---|
| P6SMB180AT3 | onsemi | 154V | 246V | 2.4A | 600W | -65 ~ 150 | DO-214AA (SMB) | Obsolete | Non-compliant |
| P6SMB180A | Eaton - Electronics Division | 154V | 246V | 2.5A | 600W | -55 ~ 150 | DO-214AA (SMB) | Active | Compliant |
| 1KSMB180A | Littelfuse Inc. | 153V | 246V | 4.1A | 1000W | -55 ~ 150 | DO-214AA (SMB) | Active | Compliant |
| P6SMB180A-M3/52 | Vishay General Semiconductor - Diodes Division | 154V | 246V | 2.4A | 600W | -65 ~ 150 | DO-214AA (SMB) | Active | Compliant |
| P6SMB180A-M3/5B | Vishay General Semiconductor - Diodes Division | 154V | 246V | 2.4A | 600W | -65 ~ 150 | DO-214AA (SMB) | Active | Compliant |
| SMBJ154A-TR | STMicroelectronics | 154V | 246V | 2.4A | 600W | -55 ~ 150 | DO-214AA (SMB) | Active | Compliant |
| SMBJ160A | Meritek | 160V | 259V | 2.32A | 600W | -55 ~ 150 | DO-214AA (SMB) | Active | Compliant |
| SMBJP6KE180A-TP | Micro Commercial Co | 154V | 246V | 2.5A | 600W | -65 ~ 150 | DO-214AA (SMB) | Active | Not specified |
| TVP06B181A-G | Comchip Technology | 154V | 246V | 2.44A | 600W | -55 ~ 150 | DO-214AA (SMB) | Active | Compliant |
Engineering Selection Recommendations
Direct Replacement Priority: P6SMB180A (Eaton), P6SMB180A-M3/52 (Vishay), and P6SMB180A-M3/5B (Vishay) provide the closest electrical match to the P6SMB180AT3. All three are active products with RoHS3 compliance. The Vishay variants maintain the full -65°C to 150°C operating temperature range of the original part, while the Eaton variant operates to -55°C. For applications requiring the extended low-temperature specification, Vishay parts are preferred.
High-Current Alternative: The 1KSMB180A (Littelfuse) offers superior current handling (4.1A vs. 2.4A) and 1000W peak pulse power, making it suitable for applications requiring additional margin or higher transient energy absorption. The reverse standoff voltage is 153V, which is within acceptable tolerance of the 154V specification.
Voltage-Shifted Alternative: SMBJ160A (Meritek) operates at 160V reverse standoff with 259V clamping voltage, representing a higher voltage variant. This part is suitable only for applications where the elevated voltage specification does not conflict with circuit design requirements.
Active Product Status: All substitute parts listed are active products, ensuring long-term availability and supply chain stability compared to the obsolete P6SMB180AT3.
Compliance Considerations: Eaton P6SMB180A, Vishay P6SMB180A-M3/52, Vishay P6SMB180A-M3/5B, STMicroelectronics SMBJ154A-TR, Littelfuse 1KSMB180A, and Comchip TVP06B181A-G are all RoHS3 compliant, supporting modern procurement and environmental requirements.
Frequently Asked Questions (FAQ)
Q: Can I use P6SMB180A as a direct replacement for P6SMB180AT3?
A: Yes. The P6SMB180A from Eaton provides identical voltage and clamping specifications (154V standoff, 246V clamping) with equivalent current rating (2.5A vs. 2.4A). The primary difference is the operating temperature range: P6SMB180A operates to -55°C while P6SMB180AT3 operates to -65°C. For applications not requiring extended low-temperature operation, this is a direct replacement.
Q: What is the difference between P6SMB180A-M3/52 and P6SMB180A-M3/5B?
A: Both Vishay variants (P6SMB180A-M3/52 and P6SMB180A-M3/5B) provide identical electrical specifications and maintain the full -65°C to 150°C operating temperature range. The difference lies in packaging configuration (Tape & Box). Both are suitable direct replacements for the P6SMB180AT3.
Q: Why would I choose 1KSMB180A over P6SMB180A?
A: The 1KSMB180A offers higher current capacity (4.1A vs. 2.4A) and 1000W peak pulse power (vs. 600W). Select this part when your application requires additional transient energy absorption capability or when design margins justify the higher rating. The reverse standoff voltage (153V) is within acceptable tolerance of the 154V specification.
Q: Is SMBJ160A compatible with P6SMB180AT3?
A: SMBJ160A operates at a higher voltage level (160V standoff, 259V clamping) compared to P6SMB180AT3 (154V standoff, 246V clamping). This part is suitable only if your circuit design accommodates the elevated voltage specification. It is not a direct replacement but a higher-voltage alternative for specific applications.
Q: What packaging considerations apply to these substitutes?
A: All listed substitute parts use the DO-214AA (SMB) surface mount package, maintaining mechanical and electrical compatibility with the P6SMB180AT3. Verify PCB footprint and reflow profile compatibility with your manufacturing process.
Q: Are all substitute parts RoHS compliant?
A: Most substitute parts are RoHS3 compliant. The P6SMB180AT3 is RoHS non-compliant. Eaton P6SMB180A, Vishay P6SMB180A-M3/52, Vishay P6SMB180A-M3/5B, STMicroelectronics SMBJ154A-TR, Littelfuse 1KSMB180A, and Comchip TVP06B181A-G are all RoHS3 compliant. SMBJP6KE180A-TP compliance status is not specified in available data.
Q: What is the temperature range difference between P6SMB180AT3 and substitute parts?
A: P6SMB180AT3 operates from -65°C to 150°C. Most substitute parts operate from -55°C to 150°C, providing a 10°C reduction in low-temperature capability. Vishay variants (P6SMB180A-M3/52 and P6SMB180A-M3/5B) and SMBJP6KE180A-TP maintain the full -65°C specification. For applications requiring extended low-temperature operation, select Vishay or Micro Commercial Co parts.
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