P6SMB250C Equivalent & Substitute Parts

Part Overview

The P6SMB250C is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage 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 part is currently listed as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

P6SMB250C

Littelfuse Inc.In Stock: 1090P6SMB250C Datasheet

Current PartRFQ

P6SMB250CA

Eaton - Electronics DivisionIn Stock: 17364P6SMB250CA Datasheet

MFR RecommendedRFQ

P6SMB250CA

Eaton - Electronics DivisionIn Stock: 17364P6SMB250CA Datasheet

MFR RecommendedRFQ

SMBJP6KE250CA-TP

Micro Commercial CoIn Stock: 4087SMBJP6KE250CA-TP Datasheet

MFR RecommendedRFQ

TVP06B251CA-G

Comchip TechnologyIn Stock: 1116TVP06B251CA-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P6SMB250C is determined by the following critical parameters:

• Reverse Standoff Voltage: Must be 214V (typical)
• Peak Pulse Current: Minimum 1.8A at 10/1000µs pulse
• Peak Pulse Power: 600W minimum
• Package: DO-214AA or SMB equivalent
• Mounting Type: Surface mount
• Bidirectional Configuration: Single channel

All qualified substitute parts maintain these core electrical and mechanical specifications, ensuring functional compatibility in the original application circuit. Variations in clamping voltage (within the 344V–361.2V range) and peak pulse current (1.74A–1.9A) remain within acceptable operating margins for transient suppression.

Parameter Comparison

Engineering Selection Recommendations

P6SMB250CA (Eaton - Electronics Division) is the primary recommended substitute. This part maintains identical reverse standoff voltage (214V), peak pulse current (1.8A), and peak pulse power (600W) specifications. It is actively manufactured and available in high inventory (17,300 pcs), with RoHS compliance and unlimited moisture sensitivity rating. The slightly lower clamping voltage (344V vs. 361.2V) provides enhanced transient suppression margin.

SMBJP6KE250CA-TP (Micro Commercial Co) is a secondary option with active product status and extended operating temperature range (-55°C to 175°C). Peak pulse current is marginally higher at 1.9A, and clamping voltage matches the Eaton part at 344V. This substitute is suitable for applications requiring elevated temperature performance.

TVP06B251CA-G (Comchip Technology) is a tertiary alternative with active status and ROHS3 compliance. Peak pulse current is 1.74A, slightly below the original specification but within acceptable tolerance for transient suppression applications. This part offers the lowest inventory availability (1,078 pcs).

All three substitutes are surface-mount components in DO-214AA/SMB packages with MSL 1 rating, ensuring direct PCB compatibility with the original P6SMB250C design.

Frequently Asked Questions (FAQ)

Q: Can P6SMB250CA directly replace P6SMB250C on the PCB? A: Yes. Both parts use identical DO-214AA (SMB) surface-mount packages with the same pinout and footprint. No PCB layout modifications are required.

Q: What is the significance of the clamping voltage difference (361.2V vs. 344V)? A: The lower clamping voltage in substitute parts (344V) provides tighter transient suppression, reducing peak voltage stress on protected circuits. This is a beneficial characteristic for component longevity.

Q: Are all substitute parts RoHS compliant? A: Yes. P6SMB250CA, SMBJP6KE250CA-TP, and TVP06B251CA-G all meet RoHS compliance requirements (RoHS or ROHS3 status).

Q: Which substitute offers the best temperature performance? A: SMBJP6KE250CA-TP supports -55°C to 175°C operating range, compared to -55°C to 150°C for other options. Select this part for applications requiring extended high-temperature operation.

Q: Do substitute parts maintain the same electrical protection characteristics? A: Yes. All substitutes maintain the 214V reverse standoff voltage, 600W peak pulse power, and 1.8A minimum peak pulse current, ensuring equivalent transient suppression performance in the original circuit application.

Q: What packaging options are available for these substitutes? A: P6SMB250CA is supplied in Tape & Reel (TR) packaging. SMBJP6KE250CA-TP and TVP06B251CA-G are also available in Tape & Reel format, suitable for automated assembly processes.