LC8.5 Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The LC8.5 is an active Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose transient protection applications. This unidirectional zener diode operates with a reverse standoff voltage of 8.5V and provides peak pulse current handling of 94A at a clamping voltage of 15.9V. The device is packaged in a through-hole DO-13 (DO-202AA) configuration and is rated for peak pulse power dissipation of 1500W.

The LC8.5 maintains active product status and is currently in stock with 744 units available. Identification of equivalent and substitute parts is necessary to support design flexibility, manage supply chain alternatives, and accommodate specific application requirements such as packaging preferences, compliance certifications, or thermal operating range constraints.

Substiute Parts

LC8.5

Microchip TechnologyIn Stock: 787LC8.5 Datasheet

Current PartRFQ

1.5KE10A

Taiwan Semiconductor CorporationIn Stock: 43181.5KE10A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the LC8.5 is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Reverse standoff voltage within acceptable tolerance of 8.5V nominal
• Breakdown voltage (minimum) in the range of 9.44V to 9.5V
• Clamping voltage (maximum) at peak pulse current between 14.5V and 15.9V
• Peak pulse current rating of 94A or greater
• Peak pulse power rating of 1500W or greater
• Operating temperature range that encompasses or exceeds -65°C to 175°C

Mechanical Compatibility Criteria:

• Through-hole mounting configuration
• Package form factor compatible with DO-13, DO-201, or equivalent axial lead geometry
• Unidirectional channel configuration (single channel)
• Zener diode type classification

The 1.5KE10A manufactured by Taiwan Semiconductor Corporation satisfies these substitution criteria with equivalent electrical performance and compatible through-hole packaging, while offering enhanced compliance certifications and alternative supply availability.

Parameter Comparison

Engineering Selection Recommendations

LC8.5 (Microchip Technology): The LC8.5 is recommended for applications requiring RoHS non-compliant component acceptance or where Microchip Technology supply chain integration is prioritized. This device offers a lower minimum operating temperature of -65°C, providing extended cold-temperature performance. Current inventory of 744 units supports immediate procurement. The device is classified as REACH Unaffected and carries EAR99 export classification.

1.5KE10A (Taiwan Semiconductor Corporation): The 1.5KE10A is recommended for applications requiring ROHS3 compliance certification. This substitute provides higher peak pulse current capability (108A versus 94A) and lower clamping voltage (14.5V versus 15.9V), resulting in improved transient suppression performance. The device maintains equivalent power dissipation rating and operating temperature upper limit. Tape & Reel packaging supports automated assembly workflows. Inventory availability of 4300 units ensures supply continuity. The device is classified as REACH Unaffected and carries EAR99 export classification.

Both devices are active products with equivalent electrical performance within the specified parameter ranges and support general-purpose transient voltage suppression applications.

Frequently Asked Questions (FAQ)

Q: Can the 1.5KE10A directly replace the LC8.5 in existing circuit designs?

A: Yes. Both devices operate as unidirectional zener TVS diodes with equivalent reverse standoff voltage (8.5V nominal), breakdown voltage, and peak pulse power rating (1500W). The 1.5KE10A provides superior peak pulse current handling (108A versus 94A) and lower clamping voltage (14.5V versus 15.9V), making it functionally compatible for direct substitution in through-hole applications.

Q: What are the package differences between LC8.5 and 1.5KE10A?

A: The LC8.5 is supplied in DO-13 (DO-202AA) through-hole package. The 1.5KE10A is available in DO-201AA, DO-27, or Axial configurations. All packages support through-hole mounting with compatible lead geometry. Physical board layout verification is required to confirm mechanical fit within specific PCB footprints.

Q: Does the 1.5KE10A operating temperature range affect substitution suitability?

A: The 1.5KE10A minimum operating temperature is -55°C compared to the LC8.5 minimum of -65°C. For applications operating above -55°C, the 1.5KE10A is fully compatible. Applications requiring operation below -55°C must retain the LC8.5 or identify alternative devices with extended low-temperature ratings.

Q: What compliance differences exist between these devices?

A: The LC8.5 is RoHS non-compliant. The 1.5KE10A is ROHS3 compliant. Both devices are REACH Unaffected and carry EAR99 export classification. Applications subject to RoHS compliance requirements must use the 1.5KE10A.

Q: How do the electrical parameters compare for transient suppression performance?

A: Both devices suppress transients to equivalent reverse standoff voltage (8.5V nominal). The 1.5KE10A clamps at 14.5V versus the LC8.5 at 15.9V, providing 1.4V lower clamping voltage. The 1.5KE10A peak pulse current rating of 108A exceeds the LC8.5 rating of 94A by 14A. These differences result in improved transient suppression margin with the 1.5KE10A.

Q: Are there packaging format considerations for automated assembly?

A: The LC8.5 is supplied in Bulk packaging. The 1.5KE10A is supplied in Tape & Reel (TR) format, which is optimized for automated pick-and-place assembly equipment. Selection between these formats depends on manufacturing process requirements and assembly line capabilities.