P6SMB9.1CAHM3_A/H Equivalent & Substitute Parts

Part Overview

The P6SMB9.1CAHM3_A/H is a bidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates at 9.1V reverse standoff voltage with a 13.4V maximum clamping voltage and 44.8A peak pulse current rating. The device is designed for telecom applications requiring transient overvoltage protection in DO-214AA (SMB) packaging.

The P6SMB9.1CAHM3_A/H is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this component.

Substiute Parts

P6SMB9.1CAHM3_A/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 855P6SMB9.1CAHM3_A/H Datasheet

Current PartRFQ

P6SMB9.1CAHM3_B/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 755P6SMB9.1CAHM3_B/H Datasheet

MFR RecommendedRFQ

SMBJE7-5CAH

Eaton - Electronics DivisionIn Stock: 808SMBJE7-5CAH Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P6SMB9.1CAHM3_A/H is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 7.78V
• Voltage - Clamping (Max) @ Ipp: 13.4V
• Current - Peak Pulse (10/1000µs): 44.8A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA (SMB)
• Bidirectional operation capability
• Automotive grade qualification (AEC-Q101)
• Operating temperature range: -65°C ~ 150°C (TJ)

Substitute parts must maintain electrical performance within these specifications to ensure functional equivalence in transient voltage suppression applications. Package compatibility and mounting type are mandatory for PCB integration without redesign.

Parameter Comparison

Engineering Selection Recommendations

P6SMB9.1CAHM3_B/H is the primary recommended substitute. This part is manufactured by the same supplier (Vishay) and maintains identical electrical specifications including reverse standoff voltage (7.78V), clamping voltage (13.4V), peak pulse current (44.8A), and operating temperature range (-65°C ~ 150°C). The part carries active product status, ensuring ongoing availability and supply chain support. It retains automotive grade qualification (AEC-Q101) and ROHS3 compliance, meeting all regulatory requirements of the original component.

SMBJE7-5CAH is an alternative substitute manufactured by Eaton. This part operates at a lower reverse standoff voltage (7.5V) and clamping voltage (12.9V) compared to the main part. The peak pulse current is slightly higher at 46.5A. The operating temperature range is reduced to -55°C ~ 150°C (TJ). This part maintains automotive grade qualification (AEC-Q101) and 600W power rating. Selection of this substitute requires verification that the lower voltage specifications are acceptable for the intended application circuit.

Both substitutes are available in the same DO-214AA (SMB) surface mount package, enabling direct PCB integration without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can P6SMB9.1CAHM3_B/H be used as a direct replacement for P6SMB9.1CAHM3_A/H?

A: Yes. The P6SMB9.1CAHM3_B/H maintains identical electrical specifications across all critical parameters: 7.78V reverse standoff voltage, 13.4V clamping voltage, 44.8A peak pulse current, and 600W power rating. Both parts are housed in DO-214AA (SMB) packaging and carry AEC-Q101 automotive qualification. The primary difference is product status; the substitute is active while the original is obsolete.

Q: What are the voltage differences between the main part and SMBJE7-5CAH?

A: The SMBJE7-5CAH operates at 7.5V reverse standoff voltage and 12.9V clamping voltage, compared to 7.78V and 13.4V respectively for the P6SMB9.1CAHM3_A/H. These lower voltage ratings may affect transient suppression performance in circuits designed for the higher voltage specifications of the original part. Application-specific circuit analysis is required to determine compatibility.

Q: Are all substitute parts in the same package?

A: Yes. The P6SMB9.1CAHM3_A/H, P6SMB9.1CAHM3_B/H, and SMBJE7-5CAH are all housed in DO-214AA (SMB) surface mount packaging. No PCB layout modifications are required for substitution.

Q: Do the substitute parts meet automotive qualification requirements?

A: Yes. Both P6SMB9.1CAHM3_B/H and SMBJE7-5CAH carry AEC-Q101 automotive grade qualification, matching the original component's certification status.

Q: What is the temperature range difference for SMBJE7-5CAH?

A: The SMBJE7-5CAH operates over -55°C ~ 150°C (TJ), while the original P6SMB9.1CAHM3_A/H operates over -65°C ~ 150°C (TJ). The substitute has a 10°C higher minimum operating temperature. Applications requiring operation below -55°C require the original or P6SMB9.1CAHM3_B/H substitute.