P-1.5KE100C Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The P-1.5KE100C is a through-hole Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. This component features a 85.5V reverse standoff voltage with a 143.85V maximum clamping voltage and 11.1A peak pulse current capability in a DO-201 package. The part is currently classified as obsolete, making identification of active equivalent and substitute parts essential for ongoing design support and procurement.

Substiute Parts

P-1.5KE100C

Littelfuse Inc.In Stock: 922P-1.5KE100C Datasheet

Current PartRFQ

1.5KE100CA-HF

Comchip TechnologyIn Stock: 10801.5KE100CA-HF Datasheet

MFR RecommendedRFQ

1.5KE100CAHE3_A/D

Vishay General Semiconductor - Diodes DivisionIn Stock: 10111.5KE100CAHE3_A/D Datasheet

MFR RecommendedRFQ

1V5KE100CA

Taiwan Semiconductor CorporationIn Stock: 24231V5KE100CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P-1.5KE100C is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 85.5V (exact match required)
• Voltage - Breakdown (Min): 90V minimum
• Voltage - Clamping (Max) @ Ipp: within acceptable range for application
• Current - Peak Pulse (10/1000µs): minimum 10.9A
• Power - Peak Pulse: 1500W (1.5kW)
• Type: Zener diode, bidirectional, single channel

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole
• Package / Case: DO-201 series (DO-201AA, DO-27, Axial compatible)
• Bidirectional Channels: 1

All identified substitute parts maintain these core parameters within acceptable engineering tolerances, ensuring functional equivalence in transient voltage suppression applications.

Parameter Comparison

Engineering Selection Recommendations

1.5KE100CA-HF (Comchip Technology)

• Active product status with ROHS3 compliance
• Clamping voltage reduced to 137V (6.85V lower than original)
• Operating temperature range limited to -55°C ~ 150°C (25°C lower maximum than original)
• Suitable for applications where the reduced upper temperature limit is acceptable

1.5KE100CAHE3_A/D (Vishay General Semiconductor - TransZorb®)

• Active product status with ROHS3 compliance and AEC-Q101 automotive qualification
• Clamping voltage at 137V with full -55°C ~ 175°C operating temperature range
• Automotive-grade component suitable for demanding applications
• Highest compliance and qualification status among available substitutes

1V5KE100CA (Taiwan Semiconductor Corporation)

• Active product status with ROHS3 compliance
• Clamping voltage at 137V with full -55°C ~ 175°C operating temperature range
• Highest inventory availability (2330 pcs)
• Cut Tape packaging option available

Frequently Asked Questions (FAQ)

Q: Can the P-1.5KE100C be directly replaced with any of these substitute parts? A: All three substitute parts maintain the critical electrical parameters (85.5V reverse standoff, 1500W peak pulse power, through-hole mounting, DO-201 package compatibility) required for functional equivalence. Selection depends on specific application requirements regarding operating temperature range and compliance certifications.

Q: What is the significance of the reduced clamping voltage in the substitute parts? A: The substitute parts specify a maximum clamping voltage of 137V compared to the original 143.85V. This represents a 4.7% reduction and remains within acceptable transient suppression performance for general-purpose applications. Applications with strict clamping voltage requirements should evaluate this parameter against circuit protection specifications.

Q: Why does the 1.5KE100CA-HF have a lower maximum operating temperature? A: The 1.5KE100CA-HF is rated to -55°C ~ 150°C, which is 25°C lower than the original part's 175°C maximum. This limitation should be considered for applications operating in high-temperature environments. The other two substitutes (1.5KE100CAHE3_A/D and 1V5KE100CA) maintain the full -55°C ~ 175°C range.

Q: What does ROHS3 compliance mean for these substitute parts? A: ROHS3 compliance indicates conformance to the Restriction of Hazardous Substances Directive, restricting the use of specific hazardous materials. All three substitute parts are ROHS3 compliant, whereas the original P-1.5KE100C is RoHS non-compliant. This is relevant for applications subject to environmental and regulatory requirements.

Q: Is the 1.5KE100CAHE3_A/D suitable for automotive applications? A: Yes. The 1.5KE100CAHE3_A/D carries AEC-Q101 automotive qualification, making it suitable for automotive-grade applications. The other two substitutes are not specified with automotive qualifications.

Q: Are there package compatibility considerations between the substitute parts? A: The 1.5KE100CA-HF and 1.5KE100CAHE3_A/D support DO-201AA, DO-27, and Axial packages. The 1V5KE100CA supports DO-201AD and Axial packages. Verify PCB footprint compatibility with your specific design before selection.