1N6040A Equivalent & Substitute Parts

Part Overview

The 1N6040A is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This through-hole component features a 9V reverse standoff voltage with a 15.6V maximum clamping voltage and 96A peak pulse current capability. The device is classified as Active product status and operates across the industrial temperature range of -55°C to 175°C. Alternative components may be required due to packaging preferences, supply chain availability, or compliance requirements specific to end-application specifications.

Substiute Parts

1N6040A

Microchip TechnologyIn Stock: 10261N6040A Datasheet

Current PartRFQ

SA9.0CA

Taiwan Semiconductor CorporationIn Stock: 8331SA9.0CA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1N6040A with the SA9.0CA is based on the following electrical and mechanical compatibility criteria:

Matching Parameters:

• Voltage - Reverse Standoff (Typ): Both rated at 9V
• Voltage - Breakdown (Min): 1N6040A at 10.5V, SA9.0CA at 10V (within acceptable tolerance band)
• Voltage - Clamping (Max) @ Ipp: 1N6040A at 15.6V, SA9.0CA at 15.4V (within acceptable tolerance band)
• Operating Temperature Range: Both rated -55°C to 175°C
• Mounting Type: Both through-hole configurations
• Type: Both Zener diodes
• Bidirectional Channels: Both single-channel devices
• Applications: Both classified for general-purpose use

Differing Parameters:

• Current - Peak Pulse: 1N6040A rated 96A; SA9.0CA rated 34A
• Power - Peak Pulse: 1N6040A rated 1500W; SA9.0CA rated 500W
• Package / Case: 1N6040A in DO-13; SA9.0CA in DO-204AC (DO-15)
• Packaging Format: 1N6040A in Bulk; SA9.0CA in Tape & Reel (TR)
• RoHS Status: 1N6040A non-compliant; SA9.0CA ROHS3 compliant

The SA9.0CA functions as an electrical equivalent for applications where peak pulse current and power dissipation requirements do not exceed 34A and 500W respectively.

Parameter Comparison

Engineering Selection Recommendations

1N6040A Selection Criteria:

• Applications requiring peak pulse current capacity of 96A
• Applications requiring peak pulse power dissipation of 1500W
• Designs where RoHS non-compliance is acceptable
• Bulk packaging requirements

SA9.0CA Selection Criteria:

• Applications with peak pulse current requirements not exceeding 34A
• Applications with peak pulse power dissipation not exceeding 500W
• Designs requiring ROHS3 compliance
• Tape & Reel packaging format preference
• Equivalent voltage protection characteristics (9V standoff, 15.4V clamping)

Both components maintain Active product status and are suitable for general-purpose transient voltage suppression. The SA9.0CA provides regulatory compliance advantage through ROHS3 certification. Selection between these parts depends on application-specific current and power requirements, packaging format needs, and regulatory compliance mandates.

Frequently Asked Questions (FAQ)

Q: Can SA9.0CA directly replace 1N6040A in all applications?

A: The SA9.0CA provides electrical equivalence for voltage protection characteristics (9V standoff, 15.4V clamping). However, substitution is limited to applications where peak pulse current does not exceed 34A and peak pulse power dissipation does not exceed 500W. The 1N6040A is rated for 96A peak pulse current and 1500W peak pulse power, making it unsuitable for direct replacement in high-current transient events.

Q: What are the package differences between these parts?

A: The 1N6040A uses DO-13 package in Bulk format. The SA9.0CA uses DO-204AC (DO-15) package in Tape & Reel format. Both are through-hole axial configurations with identical lead spacing and mounting compatibility on standard PCB layouts.

Q: How do the voltage ratings compare?

A: Both devices share a 9V reverse standoff voltage. The 1N6040A clamps at 15.6V maximum, while the SA9.0CA clamps at 15.4V maximum. This 0.2V difference falls within standard component tolerance bands and does not affect functional equivalence for voltage protection purposes.

Q: What is the significance of RoHS compliance difference?

A: The 1N6040A is RoHS non-compliant, while SA9.0CA is ROHS3 compliant. Applications subject to RoHS regulations or customer specifications requiring ROHS3 certification must use SA9.0CA. Applications without such requirements may use either component based on current and power rating needs.

Q: Are both components suitable for -55°C to 175°C operating range?

A: Yes. Both the 1N6040A and SA9.0CA are rated for identical operating temperature range of -55°C to 175°C junction temperature, ensuring thermal compatibility across industrial and extended temperature applications.

Q: What determines substitution eligibility?

A: Substitution eligibility is determined by: (1) matching reverse standoff voltage (9V), (2) compatible clamping voltage range (15.4V to 15.6V), (3) application peak pulse current requirement not exceeding 34A, (4) application peak pulse power requirement not exceeding 500W, and (5) compatible through-hole mounting configuration.