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P6SMB56CAHM3_A/I Equivalent & Substitute Parts
Part Overview
The P6SMB56CAHM3_A/I is a bidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for telecom applications requiring transient overvoltage protection in surface mount configurations. The part operates with a 47.8V reverse standoff voltage and provides 77V maximum clamping voltage with 7.8A peak pulse current capability in a DO-214AA (SMB) package.
The P6SMB56CAHM3_A/I carries an Obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this component.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Reverse Standoff (Typ) | 47.8 | V |
| Voltage - Breakdown (Min) | 53.2 | V |
| Voltage - Clamping (Max) @ Ipp | 77 | V |
| Current - Peak Pulse (10/1000µs) | 7.8 | A |
| Power - Peak Pulse | 600 | W |
| Operating Temperature Range | -65 to 150 | °C (TJ) |
| Package / Case | DO-214AA (SMB) | — |
| Bidirectional Channels | 1 | — |
| Type | Zener | — |
| Qualification | AEC-Q101 | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitution of the P6SMB56CAHM3_A/I is determined by strict equivalence across the following critical parameters:
- Voltage - Reverse Standoff (Typ): 47.8V
- Voltage - Breakdown (Min): 53.2V
- Voltage - Clamping (Max) @ Ipp: 77V
- Current - Peak Pulse (10/1000µs): 7.8A
- Power - Peak Pulse: 600W
- Package / Case: DO-214AA (SMB)
- Bidirectional Channels: 1
- Operating Temperature Range: -65°C to 150°C (TJ)
- Type: Zener
- Qualification: AEC-Q101
The substitute part P6SMB56CAHM3_B/I maintains identical electrical performance specifications and mechanical compatibility. The primary distinction is product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. standard packaging).
Parameter Comparison
| Parameter | P6SMB56CAHM3_A/I (Main) | P6SMB56CAHM3_B/I (Substitute) | Match |
|---|---|---|---|
| Manufacturer | Vishay General Semiconductor - Diodes Division | Vishay General Semiconductor - Diodes Division | ✓ |
| Category | Transient Voltage Suppressors (TVS) | Transient Voltage Suppressors (TVS) | ✓ |
| Series | P6SMB, TransZorb® | P6SMB, TransZorb® | ✓ |
| Voltage - Reverse Standoff (Typ) | 47.8V | 47.8V | ✓ |
| Voltage - Breakdown (Min) | 53.2V | 53.2V | ✓ |
| Voltage - Clamping (Max) @ Ipp | 77V | 77V | ✓ |
| Current - Peak Pulse (10/1000µs) | 7.8A | 7.8A | ✓ |
| Power - Peak Pulse | 600W | 600W | ✓ |
| Operating Temperature | -65°C ~ 150°C (TJ) | -65°C ~ 150°C (TJ) | ✓ |
| Package / Case | DO-214AA (SMB) | DO-214AA (SMB) | ✓ |
| Bidirectional Channels | 1 | 1 | ✓ |
| Type | Zener | Zener | ✓ |
| Grade | Automotive | Automotive | ✓ |
| Qualification | AEC-Q101 | AEC-Q101 | ✓ |
| Mounting Type | Surface Mount | Surface Mount | ✓ |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ✓ |
| REACH Status | REACH Unaffected | REACH Unaffected | ✓ |
| Product Status | Obsolete | Active | — |
| Packaging | Standard | Tape & Reel (TR) | — |
Engineering Selection Recommendations
The P6SMB56CAHM3_B/I is the direct substitute for the obsolete P6SMB56CAHM3_A/I. Both parts are manufactured by Vishay and share identical electrical and mechanical specifications. The substitute maintains full AEC-Q101 automotive qualification and ROHS3 compliance.
The primary advantage of selecting P6SMB56CAHM3_B/I is its Active product status, ensuring long-term availability and supply chain continuity. The Tape & Reel packaging format is standard for high-volume production environments and is compatible with automated assembly processes.
No electrical performance degradation or functional compromise occurs when substituting P6SMB56CAHM3_B/I for P6SMB56CAHM3_A/I in existing designs. The component footprint, pinout, and thermal characteristics remain identical.
Frequently Asked Questions (FAQ)
Q: Can P6SMB56CAHM3_B/I be used as a direct replacement for P6SMB56CAHM3_A/I?
A: Yes. Both parts are electrically and mechanically identical. All voltage ratings, current specifications, operating temperature range, and package dimensions match exactly. The substitute is qualified to the same AEC-Q101 automotive standard.
Q: What is the difference between the two part numbers?
A: The primary difference is product status. P6SMB56CAHM3_A/I is Obsolete, while P6SMB56CAHM3_B/I is Active. Additionally, P6SMB56CAHM3_B/I is supplied in Tape & Reel packaging, which is standard for production environments. Both parts are from the same manufacturer and series.
Q: Are there any compatibility concerns with PCB assembly?
A: No. Both parts use the DO-214AA (SMB) surface mount package with identical footprints and pinouts. They are compatible with the same PCB layouts and automated assembly equipment.
Q: Do both parts meet automotive qualification requirements?
A: Yes. Both P6SMB56CAHM3_A/I and P6SMB56CAHM3_B/I carry AEC-Q101 qualification and are rated for automotive applications. Both maintain ROHS3 compliance and REACH Unaffected status.
Q: What is the peak pulse current rating for this TVS diode?
A: The peak pulse current (10/1000µs) is 7.8A for both parts, with a maximum clamping voltage of 77V at this current level.
Q: Is the operating temperature range the same for both parts?
A: Yes. Both parts operate across the identical temperature range of -65°C to 150°C (TJ).
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