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P6SMB200AT3 Equivalent & Substitute Parts
Part Overview
The P6SMB200AT3 is a unidirectional transient voltage suppressor (TVS) diode manufactured by onsemi, rated for 600W peak pulse power at 200V. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part is housed in a DO-214AA (SMB) surface mount package and is RoHS non-compliant with unlimited moisture sensitivity rating.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | P6SMB200AT3 |
| Manufacturer | onsemi |
| Category | Transient Voltage Suppressors (TVS) |
| Type | Zener, Unidirectional |
| Power - Peak Pulse | 600W |
| Voltage Rating | 200V |
| Package / Case | DO-214AA (SMB) |
| Mounting Type | Surface Mount |
| Product Status | Obsolete |
| RoHS Status | RoHS non-compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the P6SMB200AT3 are qualified based on the following electrical and mechanical parameters:
- Unidirectional TVS diode topology
- Reverse standoff voltage in the 170V–171V range
- Breakdown voltage minimum of 189V–190V
- Clamping voltage (maximum) between 274V–353V at peak pulse current
- Peak pulse power rating of 600W
- DO-214AA (SMB) surface mount package
- Operating temperature range of -55°C to 150°C
- Surface mount assembly compatibility
All substitute parts maintain the same functional classification and package footprint, ensuring direct replacement capability in existing PCB designs.
Parameter Comparison
| Parameter | P6SMB200AT3 (Main) | P6SMB200A | SM6T200A | SMBJ170A |
|---|---|---|---|---|
| Manufacturer | onsemi | Meritek | STMicroelectronics | Fairchild Semiconductor |
| Type | Zener, Unidirectional | Zener, Unidirectional | Zener, Unidirectional | Zener, Unidirectional |
| Voltage - Reverse Standoff (Typ) | 200V | 171V | 171V | 170V |
| Voltage - Breakdown (Min) | — | 190V | 190V | 189V |
| Voltage - Clamping (Max) @ Ipp | — | 274V | 353V | 275V |
| Current - Peak Pulse | — | 2.19A (10/1000µs) | 11.3A (8/20µs) | 2.2A (10/1000µs) |
| Power - Peak Pulse | 600W | 600W | 600W | 600W |
| Package / Case | DO-214AA (SMB) | DO-214AA (SMB) | DO-214AA (SMB) | DO-214AA (SMB) |
| Operating Temperature | — | -55°C ~ 150°C | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) |
| Product Status | Obsolete | Active | Active | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | ROHS3 Compliant | Not specified |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | Not specified |
Engineering Selection Recommendations
All three substitute parts are classified as active products with current manufacturing support, addressing the obsolescence of the P6SMB200AT3. Selection should be based on compliance requirements and supply chain availability:
-
P6SMB200A (Meritek): ROHS3 compliant, active status, 38,905 units in stock. Suitable for applications requiring RoHS compliance with standard clamping voltage performance.
-
SM6T200A (STMicroelectronics): ROHS3 compliant, active status, 74,790 units in stock. Offers higher peak pulse current (11.3A at 8/20µs) and clamping voltage (353V), providing enhanced transient suppression capability. Recommended for high-energy transient environments.
-
SMBJ170A (Fairchild Semiconductor): Active status, 17,300 units in stock. Delivers clamping voltage of 275V with 2.2A peak pulse current, comparable to P6SMB200A performance characteristics.
All substitute parts maintain the DO-214AA (SMB) package footprint and -55°C to 150°C operating temperature range, ensuring direct PCB compatibility.
Frequently Asked Questions (FAQ)
Q: Can P6SMB200A, SM6T200A, and SMBJ170A be used interchangeably with P6SMB200AT3?
A: Yes, within the constraints of your circuit design. All three parts share the same unidirectional TVS diode topology, DO-214AA (SMB) package, and 600W peak pulse power rating. However, differences in reverse standoff voltage (170V–171V vs. 200V) and clamping voltage (274V–353V) must be evaluated against your specific transient suppression requirements.
Q: What is the primary difference between the substitute parts?
A: The main distinction is clamping voltage and peak pulse current. SM6T200A provides the highest clamping voltage (353V) and peak pulse current (11.3A at 8/20µs), making it suitable for high-energy transient events. P6SMB200A and SMBJ170A offer lower clamping voltages (274V and 275V respectively) with moderate peak pulse currents (2.19A and 2.2A), appropriate for standard transient suppression applications.
Q: Are all substitute parts RoHS compliant?
A: P6SMB200A and SM6T200A are ROHS3 compliant. SMBJ170A RoHS status is not specified in available documentation. The original P6SMB200AT3 is RoHS non-compliant. Verify compliance requirements for your application before selection.
Q: Do the substitute parts require different PCB footprints?
A: No. All substitute parts use the DO-214AA (SMB) package, ensuring identical PCB footprint compatibility. No layout modifications are required for direct substitution.
Q: What is the inventory status of each substitute part?
A: P6SMB200A: 38,905 units in stock. SM6T200A: 74,790 units in stock. SMBJ170A: 17,300 units in stock. All parts are available as new original stock.
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