1.5KE22CA Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The 1.5KE22CA is a bidirectional Zener transient voltage suppressor diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection applications. This component features a 1500W peak pulse power rating with an 18.8V reverse standoff voltage and 30.6V maximum clamping voltage. The part is classified as obsolete, making equivalent substitutes necessary for ongoing procurement and new designs. Substitute parts must maintain identical electrical characteristics and through-hole axial mounting compatibility to ensure direct circuit board replacement without design modification.

Substiute Parts

1.5KE22CA-T

Diodes IncorporatedIn Stock: 32431.5KE22CA-T Datasheet

Current PartRFQ

1.5KE22CA-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 132351.5KE22CA-E3/54 Datasheet

DirectRFQ

1.5KE22CAHE3_A/C

Vishay General Semiconductor - Diodes DivisionIn Stock: 9471.5KE22CAHE3_A/C Datasheet

DirectRFQ

1V5KE22CA

Taiwan Semiconductor CorporationIn Stock: 8481V5KE22CA Datasheet

DirectRFQ

1.5KE22CA

Taiwan Semiconductor CorporationIn Stock: 50881.5KE22CA Datasheet

MFR RecommendedRFQ

1.5KE22CA-B

Littelfuse Inc.In Stock: 11181.5KE22CA-B Datasheet

MFR RecommendedRFQ

1.5KE22CA-G

Comchip TechnologyIn Stock: 9501.5KE22CA-G Datasheet

MFR RecommendedRFQ

1.5KE22CA-TP

Micro Commercial CoIn Stock: 33891.5KE22CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1.5KE22CA is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 18.8V
• Voltage - Breakdown (Min): 20.9V
• Voltage - Clamping (Max) @ Ipp: 30.6V
• Power - Peak Pulse: 1500W
• Type: Zener, Bidirectional
• Mounting Type: Through Hole, Axial package
• Operating Temperature: -55°C to 175°C minimum
• RoHS3 Compliance

All identified substitute parts meet these electrical and mechanical requirements. Peak pulse current values may vary within acceptable tolerances (49A to 51A range) without affecting circuit performance. Packaging format variations (Cut Tape, Tape & Reel, Bulk, Tape & Box) do not affect electrical equivalence but may influence procurement logistics.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed are electrically equivalent to the 1.5KE22CA-T and suitable for direct replacement in circuit applications. Selection among active alternatives should prioritize:

Product Status: All substitutes maintain active manufacturing status, ensuring long-term availability and supply chain stability compared to the obsolete original part.

Compliance & Certifications: All candidates are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The 1.5KE22CAHE3_A/C variant includes AEC-Q101 automotive qualification, appropriate for applications requiring automotive-grade reliability.

Operating Temperature: The 1.5KE22CA-G from Comchip Technology operates to 150°C maximum junction temperature, compared to 175°C for other alternatives. This represents a 25°C reduction in upper thermal limit and may be restrictive in high-temperature environments.

Peak Pulse Current Tolerance: Ipp values range from 49A to 51A across the substitute population. This 2A variance (approximately 4% tolerance) falls within acceptable engineering margins for transient suppression applications and does not require circuit redesign.

Packaging Availability: Multiple packaging formats are available (Cut Tape, Tape & Reel, Bulk, Tape & Box). Selection should align with procurement volume and assembly process requirements.

Frequently Asked Questions (FAQ)

Q: Can I substitute the obsolete 1.5KE22CA-T with any of the listed alternatives?

A: Yes. All listed parts maintain identical voltage ratings (18.8V standoff, 20.9V breakdown, 30.6V clamping), 1500W power rating, and through-hole axial mounting. Peak pulse current variations (49A to 51A) are within acceptable tolerance for transient suppression circuits.

Q: What is the difference between 1.5KE22CA-E3/54 and 1.5KE22CAHE3_A/C?

A: Both are Vishay TransZorb® series parts with identical electrical specifications. The 1.5KE22CAHE3_A/C includes AEC-Q101 automotive qualification and is graded for automotive applications. The 1.5KE22CA-E3/54 is general-purpose rated. Electrical performance is equivalent.

Q: Does the 1.5KE22CA-G operating temperature limit of 150°C affect substitution?

A: The 1.5KE22CA-G is suitable for applications with maximum junction temperatures up to 150°C. If your circuit design requires operation above 150°C, select alternatives rated to 175°C (1.5KE22CA-E3/54, 1V5KE22CA, 1.5KE22CA, 1.5KE22CA-B, or 1.5KE22CA-TP).

Q: Are there package differences between substitutes?

A: Yes. Substitutes are available in Cut Tape (CT), Tape & Reel (TR), Bulk, and Tape & Box (TB) formats. All use through-hole axial mounting (DO-201AA, DO-27, DO-201AD, or DO-201AE variants). Package selection should match your assembly process and procurement volume requirements. Electrical performance is independent of packaging format.

Q: Which substitute offers the best long-term availability?

A: All listed substitutes maintain active product status. Taiwan Semiconductor Corporation (1.5KE22CA and 1V5KE22CA) and Littelfuse Inc. (1.5KE22CA-B) are established high-volume manufacturers with strong supply chain presence. Vishay General Semiconductor (1.5KE22CA-E3/54 and 1.5KE22CAHE3_A/C) offers automotive-qualified variants for regulated applications.

Q: Can I use 1.5KE22CA-TP if peak pulse current is not specified?

A: The 1.5KE22CA-TP from Micro Commercial Co does not provide explicit Ipp specification in available documentation. However, it maintains all other critical parameters (voltage ratings, 1500W power, temperature range, RoHS compliance). If peak pulse current specification is required for your design validation, select alternatives with documented Ipp values (49A to 51A range).