LCE7.0A Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The LCE7.0A is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This through-hole component operates across a temperature range of -55°C to 175°C and is ROHS3 compliant. The part is currently in active production status with 1366 units in stock. Equivalent and substitute parts are identified based on matching electrical characteristics including reverse standoff voltage, clamping voltage, and thermal operating range, as well as compatible through-hole packaging formats.

Key Parameters

Parameter	Value
Manufacturer Part Number	LCE7.0A
Manufacturer	Littelfuse Inc.
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Unidirectional Channels	1
Voltage - Reverse Standoff (Typ)	7V
Voltage - Breakdown (Min)	7.78V
Voltage - Clamping (Max) @ Ipp	12V
Current - Peak Pulse (10/1000µs)	100A
Power - Peak Pulse	1500W
Operating Temperature	-55°C ~ 175°C (TJ)
Mounting Type	Through Hole
Package / Case	DO-201AA, DO-27, Axial
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the LCE7.0A is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 7V nominal
Voltage - Clamping (Max) @ Ipp: 12V maximum
Operating Temperature Range: -55°C to 175°C
Mounting Type: Through Hole
Unidirectional Configuration: Single channel Zener diode
RoHS Compliance: ROHS3 Compliant

Substitute parts must maintain compatibility across these parameters. Variations in peak pulse current and power dissipation are acceptable provided the clamping voltage and reverse standoff voltage remain within the specified ranges. Package format differences (DO-201AA, DO-27, DO-15, P600) are acceptable for through-hole mounting applications where physical space and lead configuration permit substitution.

Parameter Comparison

Parameter	LCE7.0A	5KP7.0A	P6KE8.2A	1.5KE8.2A-TP	1N6269A-E3/54
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Taiwan Semiconductor Corporation	Micro Commercial Co	Vishay General Semiconductor
Voltage - Reverse Standoff (Typ)	7V	7V	7.02V	7.02V	7.02V
Voltage - Breakdown (Min)	7.78V	7.78V	7.79V	7.79V	7.79V
Voltage - Clamping (Max) @ Ipp	12V	12V	12.1V	12.1V	12.1V
Current - Peak Pulse (10/1000µs)	100A	425A	52A	-	124A
Power - Peak Pulse	1500W	5000W	600W	1500W	1500W
Operating Temperature	-55°C ~ 175°C	-55°C ~ 175°C	-55°C ~ 175°C	-55°C ~ 175°C	-55°C ~ 175°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-201AA, DO-27, Axial	P600, Axial	DO-204AC, DO-15, Axial	DO-201AE, Axial	DO-201AA, DO-27, Axial
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All identified substitute parts maintain active production status and ROHS3 compliance, ensuring long-term availability and regulatory conformance. Selection among substitutes should be based on application-specific requirements:

The 5KP7.0A offers the highest peak pulse current (425A) and power dissipation (5000W), suitable for applications requiring enhanced transient energy absorption. The 1N6269A-E3/54 provides moderate peak pulse current (124A) with identical power rating (1500W) to the LCE7.0A and maintains compatible DO-201AA/DO-27 packaging. The 1.5KE8.2A-TP matches the LCE7.0A power specification (1500W) with DO-201AE packaging compatibility. The P6KE8.2A operates at reduced power dissipation (600W) with lower peak pulse current (52A), appropriate for lower-energy transient protection scenarios.

All substitutes maintain the required reverse standoff voltage (7V to 7.02V nominal) and clamping voltage (12V to 12.1V maximum) within acceptable engineering tolerances for general-purpose overvoltage protection applications.

Frequently Asked Questions (FAQ)

Q: What determines if a part can substitute for the LCE7.0A?

A: Substitute parts must maintain reverse standoff voltage between 7V and 7.02V, clamping voltage between 12V and 12.1V, operating temperature range of -55°C to 175°C, through-hole mounting configuration, and ROHS3 compliance. Peak pulse current and power dissipation may vary provided the voltage parameters remain within specification.

Q: Are package format differences acceptable for substitution?

A: Yes. The LCE7.0A uses DO-201AA/DO-27 axial packaging. Substitutes using DO-201AE, DO-204AC (DO-15), or P600 axial packages are compatible for through-hole mounting applications where physical space and lead configuration accommodate the alternative package format.

Q: How do the substitute parts differ in performance?

A: The 5KP7.0A provides significantly higher peak pulse current (425A) and power dissipation (5000W) compared to the LCE7.0A (100A, 1500W), offering enhanced transient protection capability. The 1N6269A-E3/54 and 1.5KE8.2A-TP maintain equivalent power ratings (1500W) with moderate peak pulse current variations. The P6KE8.2A operates at reduced power levels (600W, 52A), suitable for lower-energy applications.

Q: Can I use a substitute with higher peak pulse current than the LCE7.0A?

A: Yes. Higher peak pulse current capability does not compromise circuit protection and may provide additional margin for transient energy absorption. The 5KP7.0A with 425A peak pulse current is a valid substitute maintaining all critical voltage and temperature parameters.

Q: Are all substitutes available in the same quantities?

A: Inventory levels vary by part number. The 5KP7.0A has 3200 units in stock, the P6KE8.2A has 9316 units, the 1.5KE8.2A-TP has 1751 units, and the 1N6269A-E3/54 has 1693 units available.

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