P6SMB18CAHM3_A/I Equivalent & Substitute Parts

Part Overview

The P6SMB18CAHM3_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 15.3V reverse standoff voltage and provides 25.2V clamping at peak pulse current, delivering 600W peak pulse power dissipation in a compact DO-214AA (SMB) package.

The P6SMB18CAHM3_A/I is classified as obsolete. Locating active production alternatives with identical electrical and mechanical specifications is necessary for new designs and ongoing procurement requirements.

Substiute Parts

P6SMB18CAHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1104P6SMB18CAHM3_A/I Datasheet

Current PartRFQ

P6SMB18CAHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1026P6SMB18CAHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMB18CAHM3_A/I is determined by strict equivalence across the following electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 15.3V
• Voltage - Breakdown (Min): 17.1V
• Voltage - Clamping (Max) @ Ipp: 25.2V
• Current - Peak Pulse (10/1000µs): 23.8A
• 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
• RoHS Status: ROHS3 Compliant

The P6SMB18CAHM3_B/I meets all substitution criteria as a direct equivalent. The primary distinction is product status: the substitute part is active production, whereas the original part is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The P6SMB18CAHM3_B/I is the direct substitute for the obsolete P6SMB18CAHM3_A/I. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and share identical electrical specifications, thermal operating range, and mechanical package configuration.

Selection of the P6SMB18CAHM3_B/I is supported by:

• Active production status ensuring long-term availability
• Identical AEC-Q101 automotive qualification
• ROHS3 compliance and REACH unaffected status
• Identical DO-214AA (SMB) surface mount package
• Matching electrical performance across all critical parameters: 15.3V reverse standoff, 17.1V minimum breakdown, 25.2V clamping voltage, 23.8A peak pulse current, and 600W peak pulse power

No electrical or mechanical redesign is required when transitioning from the P6SMB18CAHM3_A/I to the P6SMB18CAHM3_B/I.

Frequently Asked Questions (FAQ)

Q: Can the P6SMB18CAHM3_B/I be used as a direct replacement for the P6SMB18CAHM3_A/I?

A: Yes. The P6SMB18CAHM3_B/I is a direct substitute. All electrical parameters, thermal specifications, package configuration, and compliance certifications are identical. The primary difference is product status: the substitute is in active production.

Q: Are there any differences in the DO-214AA (SMB) package between these parts?

A: No. Both parts use the identical DO-214AA (SMB) surface mount package. PCB footprints and assembly processes remain unchanged.

Q: Does the P6SMB18CAHM3_B/I meet automotive qualification requirements?

A: Yes. The P6SMB18CAHM3_B/I carries AEC-Q101 qualification, matching the original part. Both are automotive-grade components.

Q: What is the difference between the packaging designations?

A: The P6SMB18CAHM3_A/I has no specified packaging format in the provided data. The P6SMB18CAHM3_B/I is supplied in Tape & Reel (TR) format, which is standard for high-volume surface mount assembly. This is a procurement format difference, not a component difference.

Q: Are there any compliance or regulatory differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8541.10.0080. Regulatory status is identical.

Q: What is the operating temperature range for both parts?

A: Both parts operate across -65°C to 150°C junction temperature (TJ), providing identical thermal performance for telecom applications.