P6SMB91AH Equivalent & Substitute Parts

Part Overview

The P6SMB91AH is an active Transient Voltage Suppressor (TVS) diode manufactured by Taiwan Semiconductor Corporation. This unidirectional zener-type device is designed for surface mount applications in the DO-214AA (SMB) package. The component provides transient voltage suppression with a reverse standoff voltage of 77.8V and a maximum clamping voltage of 125V at peak pulse current.

Substitute parts are identified to provide equivalent electrical and mechanical functionality where the primary part is unavailable or where design flexibility permits component selection from alternative qualified manufacturers. All substitute relationships are based strictly on matching electrical parameters, package specifications, and compliance certifications.

Substiute Parts

P6SMB91AH

Taiwan Semiconductor CorporationIn Stock: 1029P6SMB91AH Datasheet

Current PartRFQ

P6SMB91AS_R1_00001

Panjit International Inc.In Stock: 1796P6SMB91AS_R1_00001 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P6SMB91AH are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 77.8V
• Voltage - Breakdown (Min): 86.5V
• Voltage - Clamping (Max) @ Ipp: 125V
• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C to 150°C (TJ)
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Allowable Variation:

• Current - Peak Pulse (10/1000µs): Substitute parts must meet or exceed 4.8A minimum
• Power - Peak Pulse: 600W (maintained across all qualified substitutes)

The P6SMB91AS_R1_00001 manufactured by Panjit International Inc. meets all critical electrical parameters and package specifications. The peak pulse current specification of 4.8A is within acceptable tolerance for this application category, as it maintains the required voltage suppression characteristics across the specified operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

P6SMB91AH (Taiwan Semiconductor Corporation)

This part is the primary reference component with active product status and full AEC-Q101 automotive qualification. It is suitable for applications requiring automotive-grade transient voltage suppression with documented qualification history.

P6SMB91AS_R1_00001 (Panjit International Inc.)

This substitute part maintains electrical equivalence across all critical voltage parameters and operates within the same temperature range. Both components are ROHS3 compliant with MSL 1 rating, indicating identical environmental handling requirements. The peak pulse current specification of 4.8A is within acceptable operational tolerance for this device category. This part is suitable for general-purpose transient voltage suppression applications where the primary part is unavailable.

Both parts are active products with current manufacturing status and identical package specifications, enabling direct mechanical and electrical substitution in surface mount applications.

Frequently Asked Questions (FAQ)

Q: Can P6SMB91AS_R1_00001 be used as a direct replacement for P6SMB91AH?

A: Yes. Both parts share identical voltage suppression characteristics (77.8V standoff, 86.5V breakdown minimum, 125V clamping maximum), operate across the same temperature range (-55°C to 150°C), and use the same DO-214AA (SMB) surface mount package. The peak pulse current difference (4.8A versus 5.0A) is within acceptable tolerance for this device category.

Q: Are there package compatibility concerns when substituting between these parts?

A: No. Both the P6SMB91AH and P6SMB91AS_R1_00001 use the DO-214AA (SMB) package with surface mount mounting type. PCB footprints, solder pad layouts, and mechanical dimensions are identical.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating. The P6SMB91AH includes AEC-Q101 automotive qualification. Both parts are REACH unaffected and classified under ECCN EAR99.

Q: How do the electrical specifications compare?

A: The parts are electrically equivalent across all critical parameters: reverse standoff voltage, breakdown voltage, clamping voltage, and power dissipation (600W peak pulse). The peak pulse current specification differs by 0.2A (4.8A versus 5.0A), which does not affect voltage suppression performance in standard applications.

Q: Are both parts currently available?

A: Yes. Both parts maintain active product status with current manufacturing. Inventory availability varies by supplier and time period.