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P6SMB8.2 Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts
Part Overview
The P6SMB8.2 is a unidirectional Zener-type transient voltage suppressor diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. The device features a 7.02V reverse standoff voltage and 12.71V maximum clamping voltage with 50.4A peak pulse current capability in a DO-214AA (SMB) package. The P6SMB8.2 is classified as obsolete; equivalent and substitute parts listed below provide active alternatives with comparable electrical and mechanical specifications suitable for direct replacement in circuit designs.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Reverse Standoff (Typ) | 7.02 | V |
| Voltage - Breakdown (Min) | 7.38 | V |
| Voltage - Clamping (Max) @ Ipp | 12.71 | V |
| Current - Peak Pulse (10/1000µs) | 50.4 | A |
| Power - Peak Pulse | 600 | W |
| Operating Temperature Range | -55 to 150 | °C (TJ) |
| Package / Case | DO-214AA, SMB | — |
| Mounting Type | Surface Mount | — |
| Type | Zener | — |
| Unidirectional Channels | 1 | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the P6SMB8.2 are qualified based on the following electrical and mechanical parameters:
- Voltage - Reverse Standoff (Typ): 7.0V to 7.02V
- Voltage - Clamping (Max) @ Ipp: 12.0V to 12.71V
- Current - Peak Pulse (10/1000µs): 50A to 52A
- Power - Peak Pulse: 600W
- Package / Case: DO-214AA, SMB
- Mounting Type: Surface Mount
- Type: Zener
- Unidirectional Channels: 1
- Applications: General Purpose
All substitute parts maintain compatibility with the original P6SMB8.2 design through adherence to these parameters. Substitute parts are grouped by manufacturer and product status (Active vs. Obsolete).
Parameter Comparison
| Part Number | Manufacturer | Voltage - Reverse Standoff (Typ) [V] | Voltage - Clamping (Max) @ Ipp [V] | Current - Peak Pulse (10/1000µs) [A] | Power - Peak Pulse [W] | Operating Temperature [°C] | Package | Product Status |
|---|---|---|---|---|---|---|---|---|
| P6SMB8.2 | Littelfuse Inc. | 7.02 | 12.71 | 50.4 | 600 | -55 to 150 | DO-214AA (SMBJ) | Obsolete |
| P6SMB8.2A | Taiwan Semiconductor Corporation | 7.02 | 12.1 | 52 | 600 | -55 to 150 | DO-214AA (SMB) | Active |
| SMBJ7.0A | MDD | 7.0 | 12 | 50 | 600 | -50 to 150 | DO-214AA, SMB | Active |
| SMBJ7.0A-TP | Micro Commercial Co | 7.0 | 12 | 50 | 600 | -55 to 175 | DO-214AA (SMB) | Active |
| SMBJ7V0A | Fairchild Semiconductor | 7.0 | 12 | 50 | 600 | -55 to 150 | DO-214AA (SMB) | Active |
| TV06B7V0J-HF | Comchip Technology | 7.0 | 12 | 50 | 600 | Not specified | DO-214AA (SMB) | Active |
Engineering Selection Recommendations
Primary Substitute: P6SMB8.2A (Taiwan Semiconductor Corporation)
The P6SMB8.2A is the direct equivalent with active product status. It maintains the same reverse standoff voltage (7.02V) and operating temperature range (-55°C to 150°C) as the original P6SMB8.2. Peak pulse current is slightly higher at 52A versus 50.4A, and clamping voltage is marginally lower at 12.1V versus 12.71V. The part is ROHS3 compliant and carries unlimited moisture sensitivity rating (MSL 1). Tape & Reel packaging is available.
Secondary Substitutes: SMBJ7.0A, SMBJ7.0A-TP, SMBJ7V0A, TV06B7V0J-HF
These alternatives maintain the core electrical specifications within acceptable tolerance: 7.0V reverse standoff, 12V clamping voltage, and 50A peak pulse current. All are active products with ROHS3 compliance and MSL 1 rating. SMBJ7.0A-TP offers the widest operating temperature range (-55°C to 175°C). Selection among these alternatives depends on packaging availability (Tape & Reel, Bulk) and inventory requirements.
Frequently Asked Questions (FAQ)
Q: Can P6SMB8.2A be used as a direct replacement for P6SMB8.2?
A: Yes. The P6SMB8.2A maintains identical reverse standoff voltage (7.02V) and operating temperature range (-55°C to 150°C). Clamping voltage is 12.1V versus 12.71V, and peak pulse current is 52A versus 50.4A. These variations remain within the functional tolerance for general-purpose transient voltage suppression applications.
Q: What is the difference between P6SMB8.2A and SMBJ7.0A?
A: The P6SMB8.2A maintains the exact reverse standoff voltage of the original (7.02V), while SMBJ7.0A uses a nominal 7.0V standoff. Clamping voltage is 12.1V (P6SMB8.2A) versus 12V (SMBJ7.0A). Both support 50+ A peak pulse current and 600W peak pulse power. The choice depends on circuit voltage tolerance requirements.
Q: Are all substitute parts available in the same package?
A: All substitute parts use the DO-214AA (SMB) surface-mount package, ensuring mechanical compatibility. Packaging formats differ: P6SMB8.2A and SMBJ7.0A-TP are available in Tape & Reel; SMBJ7V0A is available in Bulk; SMBJ7.0A and TV06B7V0J-HF have standard packaging. Verify packaging availability with your supplier.
Q: Does operating temperature range affect substitution?
A: Operating temperature ranges vary slightly among substitutes. SMBJ7.0A-TP supports -55°C to 175°C, the widest range. SMBJ7.0A operates -50°C to 150°C. Others support -55°C to 150°C. Select based on your application's thermal requirements; wider ranges provide additional design margin.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting current environmental and reliability standards.
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