LC6.5A Equivalent & Substitute Parts Reference

Part Overview

The LC6.5A is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This through-hole component operates with a 6.5V reverse standoff voltage and provides 11.2V maximum clamping voltage at peak pulse current. The part is currently in active production status with 1093 units available in bulk packaging.

Equivalent and substitute parts are identified when alternative components meet or exceed the electrical and mechanical specifications of the LC6.5A, enabling circuit designers to source components from different manufacturers or alternative package configurations while maintaining circuit performance and reliability.

Substiute Parts

LC6.5A

Microchip TechnologyIn Stock: 1105LC6.5A Datasheet

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LCE6.5A

Littelfuse Inc.In Stock: 1150LCE6.5A Datasheet

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LCE7.0A

Littelfuse Inc.In Stock: 1461LCE7.0A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the LC6.5A is determined by matching critical electrical parameters that define TVS diode functionality: reverse standoff voltage, breakdown voltage, clamping voltage, and peak pulse current rating. All substitute parts must maintain the same unidirectional channel configuration and through-hole mounting type.

The LC6.5A identifies two qualified substitutes based on electrical equivalence:

LCE6.5A (Littelfuse Inc.): Matches all primary electrical specifications including 6.5V reverse standoff, 7.22V breakdown voltage, 11.2V clamping voltage, and 100A peak pulse current. Differs in package configuration (DO-201 vs. DO-13) and operating temperature lower limit (-55°C vs. -65°C). Supplied in cut tape packaging with RoHS3 compliance.

LCE7.0A (Littelfuse Inc.): Provides higher voltage rating with 7V reverse standoff, 7.78V breakdown voltage, and 12V clamping voltage. Maintains 100A peak pulse current and 1500W power dissipation. Suitable for applications requiring elevated voltage protection margins. Supplied in cut tape packaging with RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

LCE6.5A Selection Criteria: This substitute provides electrical equivalence to the LC6.5A with identical voltage and current ratings. Selection is appropriate when RoHS3 compliance is required for end-product applications. The reduced operating temperature lower limit (-55°C vs. -65°C) must be evaluated against application requirements. Package reconfiguration from DO-13 to DO-201 requires PCB layout modification. This part is suitable for direct functional replacement in compliant supply chains.

LCE7.0A Selection Criteria: This substitute is selected when circuit design permits elevated voltage clamping (12V vs. 11.2V) and higher reverse standoff voltage (7V vs. 6.5V). The increased voltage margin provides additional protection headroom in applications subject to higher transient events. RoHS3 compliance and active production status support long-term availability. Package reconfiguration from DO-13 to DO-201 requires PCB layout modification.

Compliance Considerations: The LC6.5A is RoHS non-compliant, while both LCE6.5A and LCE7.0A are RoHS3 compliant. Applications subject to RoHS directives or customer compliance requirements must utilize the Littelfuse alternatives. All three parts maintain REACH Unaffected status and EAR99 export classification.

Frequently Asked Questions (FAQ)

Q: Can LCE6.5A be used as a direct replacement for LC6.5A without circuit modification?

A: LCE6.5A provides electrical equivalence but requires PCB layout modification due to package change from DO-13 to DO-201. Both are through-hole components with identical voltage and current ratings. Mechanical footprint differences necessitate board redesign.

Q: What is the primary difference between LC6.5A and LCE7.0A?

A: The LCE7.0A operates at higher voltage levels: 7V reverse standoff versus 6.5V, and 12V clamping versus 11.2V. Peak pulse current remains 100A for both. Selection depends on whether the application circuit can tolerate the elevated clamping voltage.

Q: Does the operating temperature range difference between LC6.5A (-65 to 175°C) and LCE6.5A (-55 to 175°C) affect substitution?

A: The LCE6.5A has a higher minimum operating temperature limit. Substitution is valid only for applications where the circuit operates above -55°C. Applications requiring -65°C operation must retain the LC6.5A or identify alternative sources.

Q: Are all three parts suitable for general-purpose transient voltage suppression?

A: Yes. All three parts are classified for general-purpose applications with identical peak pulse current (100A) and power dissipation (1500W). Voltage rating selection depends on specific circuit protection requirements.

Q: What packaging differences exist between these TVS diodes?

A: LC6.5A is supplied in bulk packaging with DO-13 (DO-202AA) case. LCE6.5A and LCE7.0A are supplied in cut tape with DO-201AA, DO-27, or axial package options. Packaging selection affects component handling, placement automation, and PCB footprint design.

Q: How do RoHS compliance differences impact part selection?

A: LC6.5A is RoHS non-compliant while LCE6.5A and LCE7.0A are RoHS3 compliant. Products destined for markets with RoHS directives or customers with compliance mandates must use the Littelfuse alternatives.

Q: Can capacitance specifications be used to differentiate these parts?

A: LC6.5A specifies 100pF capacitance at 1MHz. LCE6.5A and LCE7.0A do not provide capacitance data in available documentation. Capacitance is not a primary substitution criterion for these general-purpose TVS applications.