P6SMB250 Equivalent & Substitute Parts

Part Overview

The P6SMB250 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection in surface-mount applications. This component features a 214V reverse standoff voltage, 361.2V maximum clamping voltage, and 600W peak pulse power rating in a DO-214AA (SMB) package.

The P6SMB250 is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

P6SMB250

Littelfuse Inc.In Stock: 1214P6SMB250 Datasheet

Current PartRFQ

P6SMB250A

Eaton - Electronics DivisionIn Stock: 10115P6SMB250A Datasheet

DirectRFQ

P6SMB250A

Eaton - Electronics DivisionIn Stock: 10115P6SMB250A Datasheet

DirectRFQ

P6SMB250AHE3_ALL

Vishay General Semiconductor - Diodes DivisionIn Stock: 887P6SMB250AHE3_ALL Datasheet

DirectRFQ

TVP06B251A-G

Comchip TechnologyIn Stock: 1113TVP06B251A-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMB250 is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 214V
• Voltage - Clamping (Max) @ Ipp: Maximum allowable 361.2V
• Current - Peak Pulse (10/1000µs): Minimum 1.8A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB (surface mount)
• Unidirectional Channels: 1
• Operating Temperature Range: -55°C minimum to 150°C maximum

Substitute parts must maintain electrical compatibility within these parameters. Clamping voltage values below the original specification are acceptable for protective applications. Peak pulse current ratings at or above 1.8A satisfy the requirement. All substitute parts identified operate within the specified temperature range and utilize the same surface-mount package.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts maintain electrical compatibility with the P6SMB250 within the specified parameter tolerances. Selection should be based on compliance and product availability requirements:

P6SMB250A (Eaton) is an active product with equivalent electrical specifications and identical peak pulse current rating. This part is RoHS non-compliant and should be selected only when RoHS compliance is not a design requirement. Inventory availability is high (10,100 pcs).

P6SMB250AHE3_ALL (Vishay) is an active product with ROHS3 compliance and AEC-Q101 automotive qualification. The clamping voltage and peak pulse current are within acceptable tolerance. Extended operating temperature range (-65°C to 150°C) provides additional margin. This part is suitable for applications requiring RoHS compliance and automotive-grade reliability.

TVP06B251A-G (Comchip) is an active product with ROHS3 compliance. Electrical parameters are equivalent to the Vishay substitute. This part is suitable for general-purpose applications requiring RoHS compliance.

Frequently Asked Questions (FAQ)

Q: Can P6SMB250A be used as a direct replacement for P6SMB250?

A: P6SMB250A maintains identical reverse standoff voltage (214V), peak pulse current (1.8A), and power rating (600W). The clamping voltage is 344V compared to 361.2V in the original part, which is acceptable for transient suppression applications. However, P6SMB250A is RoHS non-compliant, which may conflict with design or regulatory requirements.

Q: What is the difference between P6SMB250AHE3_ALL and TVP06B251A-G?

A: Both parts share identical reverse standoff voltage (214V), clamping voltage (344V), and power rating (600W). P6SMB250AHE3_ALL includes AEC-Q101 automotive qualification and an extended operating temperature range (-65°C to 150°C). TVP06B251A-G operates within the standard temperature range (-55°C to 150°C). Selection depends on whether automotive-grade qualification is required.

Q: Are all substitute parts available in the same package?

A: Yes. All substitute parts use the DO-214AA (SMB) surface-mount package, ensuring mechanical and electrical compatibility with existing PCB designs.

Q: Which substitute part has the best RoHS compliance status?

A: P6SMB250AHE3_ALL and TVP06B251A-G are both ROHS3 compliant. P6SMB250A is RoHS non-compliant and should not be selected for applications requiring RoHS compliance.

Q: Can I use a substitute part with lower peak pulse current?

A: P6SMB250AHE3_ALL and TVP06B251A-G have a peak pulse current rating of 1.74A, compared to 1.8A in the original part. This 0.06A reduction is within acceptable tolerance for most transient suppression applications and does not compromise protective function.