1N6470 Equivalent & Substitute Parts

Part Overview

The 1N6470 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This through-hole axial component operates across a temperature range of -55°C to 175°C and provides peak pulse power dissipation of 1500W. The part is currently active in production with 950 units in stock.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified voltage and current parameters while maintaining compatibility with through-hole mounting requirements. Alternative sources and package configurations may be necessary due to inventory availability, manufacturing discontinuation, or design optimization requirements.

Substiute Parts

1N6470

Microchip TechnologyIn Stock: 10321N6470 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

Substitute parts for the 1N6470 are qualified based on the following electrical and mechanical criteria:

Primary Substitution Criteria:

• Voltage - Reverse Standoff within ±1V of the main part specification
• Voltage - Clamping (Max) @ Ipp within ±1.2V of the main part specification
• Peak Pulse Power rating equal to or greater than 1500W
• Operating temperature range encompassing -55°C to 175°C
• Through-hole axial mounting configuration
• Unidirectional Zener diode topology

Identified Substitute Parts:

The LCE6.5A and LCE7.0A from Littelfuse Inc. meet the core electrical parameters for transient voltage suppression. Both devices maintain the required 1500W peak pulse power rating and operate across the full -55°C to 175°C temperature range. The LCE series components are available in DO-201 axial package configuration, compatible with through-hole assembly processes.

Parameter Comparison

Engineering Selection Recommendations

1N6470 (Microchip Technology)

The 1N6470 is the primary component specification. This part is active in production with confirmed inventory of 950 units. The device carries RoHS non-compliant status and is unaffected by REACH regulations. Selection of this part is appropriate when Microchip sourcing is required or when the specific 775A peak pulse current rating is mandated by circuit design.

LCE6.5A (Littelfuse Inc.)

The LCE6.5A is a qualified substitute with ROHS3 compliance, providing enhanced regulatory alignment compared to the main part. This device operates at a 6.5V reverse standoff voltage with 11.2V clamping, representing a 0.5V increase in standoff voltage and 0.2V increase in clamping voltage relative to the 1N6470. The LCE6.5A is rated for 100A peak pulse current and is available in DO-201 axial package configuration. Inventory availability is 1053 units. This substitute is appropriate for applications where higher voltage standoff is acceptable and ROHS3 compliance is required.

LCE7.0A (Littelfuse Inc.)

The LCE7.0A is a qualified substitute with ROHS3 compliance. This device operates at a 7V reverse standoff voltage with 12V clamping, representing a 1V increase in standoff voltage and 1V increase in clamping voltage relative to the 1N6470. The LCE7.0A is rated for 100A peak pulse current and is available in DO-201 axial package configuration. Inventory availability is 1366 units. This substitute is appropriate for applications where higher voltage standoff and clamping are acceptable and ROHS3 compliance is required.

Frequently Asked Questions (FAQ)

Q: Can the LCE6.5A or LCE7.0A be used as direct replacements for the 1N6470?

A: The LCE series devices are electrical equivalents within the specified parameter ranges. Both maintain the required 1500W peak pulse power rating and -55°C to 175°C operating temperature range. However, the LCE6.5A and LCE7.0A operate at higher reverse standoff voltages (6.5V and 7V respectively) compared to the 1N6470 (6V). Circuit design must accommodate these voltage differences. Both LCE devices are available in DO-201 axial through-hole packages, compatible with 1N6470 board layouts.

Q: What is the difference between the 1N6470 and LCE6.5A in terms of peak pulse current?

A: The 1N6470 is rated for 775A peak pulse current at 8/20µs pulse duration. The LCE6.5A is rated for 100A peak pulse current at 10/1000µs pulse duration. These represent different test conditions and pulse waveforms. Both devices deliver 1500W peak pulse power. Circuit requirements determine which current rating is appropriate.

Q: Are the LCE6.5A and LCE7.0A RoHS compliant?

A: Yes, both LCE6.5A and LCE7.0A are ROHS3 compliant. The 1N6470 is RoHS non-compliant. Selection of LCE series devices is necessary for applications requiring RoHS3 compliance.

Q: What package configurations are available for substitute parts?

A: The LCE6.5A and LCE7.0A are supplied in DO-201 axial package configuration, compatible with through-hole assembly. Both devices are available in Cut Tape (CT) packaging format. The 1N6470 is supplied in bulk axial packaging.

Q: How do the clamping voltages compare across all three devices?

A: The 1N6470 clamps at 11V maximum. The LCE6.5A clamps at 11.2V maximum, representing a 0.2V increase. The LCE7.0A clamps at 12V maximum, representing a 1V increase. Circuit design must verify that these clamping voltage differences are acceptable for the protected circuit.

Q: What is the moisture sensitivity level for these TVS diodes?

A: All three devices (1N6470, LCE6.5A, and LCE7.0A) carry Moisture Sensitivity Level (MSL) rating of 1, indicating unlimited shelf life without moisture control requirements.