LCE11A-E3/54 Equivalent & Substitute Parts

Part Overview

The LCE11A-E3/54 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 1500W peak pulse power with an 11V reverse standoff voltage and 18.2V maximum clamping voltage. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

LCE11A-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 1114LCE11A-E3/54 Datasheet

Current PartRFQ

1.5KE12A

Taiwan Semiconductor CorporationIn Stock: 304871.5KE12A Datasheet

MFR RecommendedRFQ

LCE11A

Littelfuse Inc.In Stock: 830LCE11A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LCE11A-E3/54 are selected based on the following critical parameters that determine functional equivalence:

• Voltage - Reverse Standoff (Typ): 11V
• Voltage - Clamping (Max) @ Ipp: 18.2V
• Current - Peak Pulse (10/1000µs): 82A
• Power - Peak Pulse: 1500W
• Type: Unidirectional Zener
• Mounting Type: Through Hole
• Package / Case: DO-201AA, DO-27, Axial

The identified substitute parts maintain these core electrical and mechanical specifications, ensuring direct functional replacement in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

The LCE11A manufactured by Littelfuse Inc. is the primary substitute for the obsolete LCE11A-E3/54. This part maintains identical electrical specifications across all critical parameters: 11V reverse standoff voltage, 18.2V clamping voltage, and 82A peak pulse current. The LCE11A is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity level rating. The operating temperature range is -55°C to 175°C, which covers the majority of industrial applications, though the original part extends to -65°C minimum.

The 1.5KE12A from Taiwan Semiconductor Corporation is an alternative substitute with active product status and ROHS3 compliance. This part exhibits lower reverse standoff (10.2V) and clamping voltages (16.7V) compared to the original specification, with higher peak pulse current capability (94A). Selection of this part requires circuit-level analysis to confirm voltage tolerance margins.

Both substitute parts are available in DO-201AA, DO-27, and Axial package configurations, matching the original mounting requirements for through-hole applications.

Frequently Asked Questions (FAQ)

Q: Can the LCE11A directly replace the LCE11A-E3/54?

A: Yes. The LCE11A maintains identical voltage and current specifications: 11V reverse standoff, 18.2V clamping voltage, and 82A peak pulse current. Both are unidirectional Zener TVS diodes in DO-201AA through-hole packages. The primary difference is product status—the original is obsolete while the LCE11A is in active production.

Q: What are the key differences between the LCE11A and 1.5KE12A?

A: The 1.5KE12A has lower reverse standoff voltage (10.2V vs. 11V) and lower clamping voltage (16.7V vs. 18.2V), but higher peak pulse current (94A vs. 82A). Both maintain 1500W peak pulse power rating. The 1.5KE12A is suitable only if circuit design tolerates the reduced voltage specifications.

Q: Are all substitute parts available in the same package?

A: Yes. Both the LCE11A and 1.5KE12A are available in DO-201AA, DO-27, and Axial package configurations, matching the original LCE11A-E3/54 through-hole mounting requirements.

Q: Do the substitute parts meet the same compliance standards?

A: Yes. Both the LCE11A and 1.5KE12A are ROHS3 compliant with unlimited moisture sensitivity level (MSL 1) ratings, matching the original part's compliance profile.

Q: What is the operating temperature difference?

A: The original LCE11A-E3/54 operates from -65°C to 175°C. Both substitute parts operate from -55°C to 175°C. Applications requiring operation below -55°C require the original part or alternative sourcing strategies.