P6KE9.1CA-B Equivalent & Substitute Parts

Part Overview

The P6KE9.1CA-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage protection applications. This bidirectional Zener diode operates in the DO-204AC (DO-15) axial through-hole package and provides 600W peak pulse power dissipation with a 13.4V maximum clamping voltage. The component is currently in active production status with 826 pieces available in new original inventory. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the specified parameter range.

Substiute Parts

P6KE9.1CA-B

Littelfuse Inc.In Stock: 844P6KE9.1CA-B Datasheet

Current PartRFQ

P6KE9.1CA

Taiwan Semiconductor CorporationIn Stock: 20501P6KE9.1CA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P6KE9.1CA-B is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 7.78V
• Voltage - Breakdown (Min): 8.65V
• Voltage - Clamping (Max) @ Ipp: 13.4V
• Power - Peak Pulse: 600W
• Package / Case: DO-204AC (DO-15) Axial
• Mounting Type: Through Hole
• Operating Temperature Range: -55°C to 175°C (TJ)

The P6KE9.1CA manufactured by Taiwan Semiconductor Corporation qualifies as a direct substitute based on matching all critical electrical parameters and mechanical specifications. Peak pulse current variation (47A versus 45.5A) remains within the functional tolerance of the 600W power rating and does not affect circuit compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the P6KE9.1CA-B and P6KE9.1CA are active production components with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement. The P6KE9.1CA-B (Littelfuse) offers 826 pieces in current inventory, while the P6KE9.1CA (Taiwan Semiconductor) provides significantly higher availability at 20,400 pieces. Selection between these parts should be based on inventory requirements, lead time constraints, and established supplier relationships. Both components are suitable for direct substitution in general-purpose transient voltage suppression applications.

Frequently Asked Questions (FAQ)

Q: Can the P6KE9.1CA from Taiwan Semiconductor replace the P6KE9.1CA-B from Littelfuse?

A: Yes. Both components share identical voltage ratings (7.78V reverse standoff, 8.65V breakdown minimum, 13.4V clamping maximum), power dissipation (600W peak pulse), operating temperature range (-55°C to 175°C), and DO-204AC (DO-15) axial through-hole package specifications. Peak pulse current differs by 1.5A (47A versus 45.5A), which remains within the functional tolerance of the 600W power rating.

Q: Are there any package or mounting differences between these parts?

A: No. Both components use identical DO-204AC (DO-15) axial through-hole packaging and mounting specifications. Direct board-level substitution is possible without layout or assembly modifications.

Q: Do both parts meet current compliance standards?

A: Yes. Both the P6KE9.1CA-B and P6KE9.1CA are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component use in regulated markets.

Q: What is the primary reason to consider substitution?

A: Inventory availability and lead time optimization. The P6KE9.1CA (Taiwan Semiconductor) maintains 20,400 pieces in stock compared to 826 pieces for the P6KE9.1CA-B (Littelfuse), providing improved supply chain flexibility for high-volume production requirements.