LCE30A Equivalent & Substitute Parts

Part Overview

The LCE30A is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection in through-hole applications. This component operates with a 30V reverse standoff voltage and provides peak pulse power handling of 1500W. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified when they maintain the same reverse standoff voltage, breakdown voltage range, and core electrical performance characteristics while potentially offering different package configurations or enhanced power handling capabilities.

Substiute Parts

LCE30A

Littelfuse Inc.In Stock: 2464LCE30A Datasheet

Current PartRFQ

5KP30A

Diotec SemiconductorIn Stock: 44475KP30A Datasheet

MFR RecommendedRFQ

SA30A

Taiwan Semiconductor CorporationIn Stock: 45164SA30A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LCE30A are qualified based on the following critical parameters that define functional equivalence:

• Reverse standoff voltage of 30V (Typ)
• Breakdown voltage minimum of 33.3V
• Unidirectional channel configuration (1 channel)
• Through-hole mounting type
• General-purpose TVS application category
• Active product status
• ROHS3 compliance

The identified substitutes maintain these core electrical specifications while differing in clamping voltage, peak pulse current capability, power dissipation rating, and package configuration. These differences allow for component selection based on specific application requirements for current handling and thermal performance.

Parameter Comparison

Engineering Selection Recommendations

All three components—LCE30A, 5KP30A, and SA30A—maintain active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment. Selection between these parts depends on application-specific requirements for peak pulse current handling and power dissipation:

The 5KP30A offers the highest peak pulse current (103A) and power dissipation (5000W), suitable for applications requiring enhanced transient energy absorption. The LCE30A provides mid-range performance (31A, 1500W) with the widest operating temperature range (-65°C to 175°C). The SA30A delivers the lowest power rating (500W, 10.8A) but maintains compatibility with the 30V protection specification.

Package compatibility must be verified for board-level integration, as the three parts use different axial through-hole packages: DO-201AA/DO-27 for LCE30A, P600 for 5KP30A, and DO-204AC/DO-15 for SA30A.

Frequently Asked Questions (FAQ)

Q: Can the 5KP30A directly replace the LCE30A in all applications?

A: The 5KP30A maintains identical reverse standoff voltage (30V), breakdown voltage (33.3V), and clamping voltage (48.4V) specifications. However, the P600 package differs from the DO-201AA/DO-27 package of the LCE30A. Physical board layout compatibility must be confirmed before substitution. The 5KP30A's higher current rating (103A vs. 31A) and power dissipation (5000W vs. 1500W) make it suitable for higher-energy transient environments.

Q: What are the key differences between the SA30A and LCE30A?

A: Both parts share the same 30V reverse standoff and 33.3V breakdown specifications. The SA30A differs in clamping voltage (64.3V vs. 48.4V), peak pulse current (10.8A vs. 31A), and power dissipation (500W vs. 1500W). The SA30A uses the DO-204AC/DO-15 package instead of DO-201AA/DO-27. The SA30A is appropriate for lower-energy transient protection applications.

Q: Are all three parts RoHS compliant?

A: Yes, all three parts—LCE30A, 5KP30A, and SA30A—are ROHS3 compliant, meeting current environmental and regulatory requirements.

Q: What is the significance of the clamping voltage difference between these parts?

A: Clamping voltage determines the maximum voltage the TVS diode allows across its terminals during a transient event. The LCE30A and 5KP30A clamp at 48.4V, while the SA30A clamps at 64.3V. Lower clamping voltage provides tighter protection but may require higher current handling capability. Application circuit voltage tolerance specifications determine which clamping voltage is appropriate.

Q: Can I use the SA30A in place of the LCE30A if my application has lower transient energy requirements?

A: The SA30A maintains the same 30V reverse standoff and 33.3V breakdown specifications, making it electrically compatible for the protection threshold. However, the SA30A's lower power dissipation rating (500W vs. 1500W) and lower peak pulse current (10.8A vs. 31A) limit its use to applications with reduced transient energy. Package compatibility with DO-204AC/DO-15 must also be verified.