1N6462 Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The 1N6462 is an axial-lead transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This unidirectional zener diode features a 6V reverse standoff voltage with an 11V maximum clamping voltage and peak pulse current rating of 258A (8/20µs). The component is classified as Active product status and operates across the industrial temperature range of -55°C to 175°C.

Substitute parts are necessary when the original 1N6462 becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design requirements necessitate different electrical performance characteristics within acceptable operating parameters.

Substiute Parts

1N6462

Microchip TechnologyIn Stock: 9891N6462 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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SA6.0A

Taiwan Semiconductor CorporationIn Stock: 60139SA6.0A Datasheet

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SA6.0A-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 6828SA6.0A-E3/54 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1N6462 is determined by the following critical electrical and mechanical parameters:

Voltage Parameters: Reverse standoff voltage, breakdown voltage minimum, and maximum clamping voltage must remain within acceptable tolerance bands to ensure proper circuit protection without nuisance triggering or inadequate clamping.

Current Handling: Peak pulse current rating determines the component's ability to suppress transient events. Substitute parts with lower current ratings require circuit-level evaluation.

Thermal Performance: Operating temperature range must support the application environment. All listed substitutes maintain the -55°C to 175°C specification.

Mounting and Packaging: Through-hole axial mounting is the primary mechanical requirement. Substitute parts utilize compatible axial package formats (DO-201, DO-204AC/DO-15) suitable for through-hole assembly.

Compliance and Status: Active product status and RoHS compliance ensure long-term availability and regulatory conformance.

The substitute parts listed below are grouped by their electrical compatibility with the 1N6462 within these defined parameters.

Parameter Comparison

Engineering Selection Recommendations

LCE6.5A (Littelfuse): This substitute provides the closest electrical match to the 1N6462 with a 6.5V reverse standoff voltage and 11.2V clamping voltage. The LCE6.5A delivers 100A peak pulse current, which is lower than the 1N6462 but sufficient for many general-purpose protection circuits. The component is ROHS3 compliant and maintains Active product status. The DO-201 package is mechanically compatible with through-hole assembly. This substitute is suitable for applications where the lower current rating is acceptable.

LCE7.0A (Littelfuse): This part features a 7V reverse standoff voltage with 12V clamping voltage, representing a higher voltage variant. The LCE7.0A is appropriate for circuits requiring slightly elevated voltage thresholds while maintaining the same 100A peak pulse current and ROHS3 compliance. Active product status and DO-201 packaging ensure long-term availability and manufacturing compatibility.

SA6.0A (Taiwan Semiconductor Corporation): This substitute matches the 1N6462 reverse standoff voltage at 6V with a 10.3V clamping voltage. The SA6.0A provides 50A peak pulse current and 500W peak pulse power, identical to the 1N6462 power rating. The DO-204AC (DO-15) package is a smaller axial format suitable for space-constrained applications. ROHS3 compliance and Active status are confirmed. This substitute is appropriate for designs where the lower current rating is acceptable and compact packaging is beneficial.

SA6.0A-E3/54 (Vishay General Semiconductor): This TransZorb® variant provides identical voltage specifications to the SA6.0A with 6V reverse standoff and 10.3V clamping voltage. The peak pulse current is 48.5A with 500W power rating. The DO-204AC (DO-15) package offers compact through-hole mounting. ROHS3 compliance and Active product status are maintained. This substitute is suitable for applications requiring the same electrical performance as SA6.0A with Vishay component qualification.

All substitute parts maintain Active product status and support the -55°C to 175°C operating temperature range. Selection between substitutes depends on circuit current requirements, available board space, and manufacturer qualification requirements.

Frequently Asked Questions (FAQ)

Q: Can the LCE6.5A or LCE7.0A be used as direct replacements for the 1N6462?

A: The Littelfuse LCE series parts are electrically compatible substitutes with comparable voltage ratings and clamping characteristics. However, the peak pulse current is reduced from 258A to 100A. Direct substitution is valid only if the circuit design accommodates the lower current rating. The DO-201 package is mechanically compatible with through-hole assembly.

Q: What is the difference between the SA6.0A and SA6.0A-E3/54?

A: Both parts share identical electrical specifications: 6V reverse standoff voltage, 10.3V clamping voltage, and 50A peak pulse current. The SA6.0A-E3/54 is the Vishay-manufactured variant (TransZorb® series) with slightly lower peak pulse current (48.5A versus 50A). Selection depends on manufacturer qualification and supply chain requirements. Both use the DO-204AC (DO-15) package.

Q: How do package differences affect substitution?

A: The 1N6462 uses the B axial package. Substitute parts employ DO-201 (LCE series) or DO-204AC/DO-15 (SA series) packages. All are through-hole axial formats with compatible lead spacing and mounting characteristics. Package selection may depend on available board hole patterns and manufacturing equipment specifications.

Q: Are all substitute parts RoHS compliant?

A: The 1N6462 is RoHS non-compliant. All listed substitute parts (LCE6.5A, LCE7.0A, SA6.0A, SA6.0A-E3/54) are ROHS3 compliant. This compliance upgrade may be required for new designs or regulatory conformance in specific markets.

Q: What is the impact of lower peak pulse current ratings in substitutes?

A: The 1N6462 provides 258A peak pulse current, while LCE series substitutes deliver 100A and SA series substitutes deliver 48.5–50A. Lower current ratings reduce the component's ability to suppress high-energy transient events. Substitution is valid only when circuit analysis confirms that transient energy levels remain within the substitute part's rating. Peak pulse power ratings (500W for SA series, 1500W for LCE series) must also be evaluated.

Q: Can the LCE7.0A be used in circuits designed for 6V protection?

A: The LCE7.0A has a 7V reverse standoff voltage compared to the 1N6462's 6V rating. This higher threshold means the device will not clamp until voltages exceed 7V, potentially allowing higher transient peaks before suppression. Use of the LCE7.0A in 6V-rated circuits requires circuit-level analysis to confirm compatibility with the application's overvoltage tolerance.

Q: What inventory considerations apply to these substitutes?

A: The 1N6462 has 960 units in stock. Substitute availability varies: LCE6.5A (1053 units), LCE7.0A (1366 units), SA6.0A (60,100 units), and SA6.0A-E3/54 (6,785 units). The SA6.0A offers the highest inventory availability, while all parts maintain Active product status for continued supply.