TC9402EJD Equivalent & Substitute Parts

Part Overview

The TC9402EJD is a Volt to Frequency and Frequency to Volt Converter IC manufactured by Microchip Technology, designed for 100 kHz operation with ±0.25% linearity. This component is classified as obsolete, making identification of suitable substitutes essential for ongoing system support and new design implementations. The part operates as a precision analog-to-digital and digital-to-analog conversion interface, commonly used in measurement and control applications requiring voltage-to-frequency or frequency-to-voltage signal transformation.

Substiute Parts

TC9402EJD

Microchip TechnologyIn Stock: 1158TC9402EJD Datasheet

Current PartRFQ

TC9402CPD

Microchip TechnologyIn Stock: 1271TC9402CPD Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TC9402EJD is determined by strict equivalence across the following critical parameters:

• Functional Type: Volt to Frequency and Frequency to Volt Converter
• Maximum Operating Frequency: 100 kHz
• Linearity Specification: ±0.25%
• Temperature Coefficient: ±100 ppm/°C
• Mounting Technology: Through Hole
• Base Product Number: TC9402
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected

The TC9402CPD qualifies as a direct substitute based on identical electrical performance specifications and regulatory certifications. The primary distinction lies in packaging format and product status.

Parameter Comparison

Engineering Selection Recommendations

The TC9402CPD is the appropriate substitute for the obsolete TC9402EJD. Both parts maintain identical electrical specifications, including frequency range, linearity, and temperature stability. The TC9402CPD is currently in active production status, ensuring long-term availability and supply chain continuity.

The packaging difference between 14-CERDIP (ceramic dual in-line package) and 14-PDIP (plastic dual in-line package) does not affect electrical performance or pin compatibility. Both packages maintain the same 0.300" (7.62mm) pitch and 14-pin configuration, allowing direct socket substitution in existing designs.

Both parts satisfy ROHS3 compliance and REACH requirements, maintaining regulatory alignment for applications subject to environmental standards.

Frequently Asked Questions (FAQ)

Q: Can TC9402CPD directly replace TC9402EJD in existing circuit designs?

A: Yes. The TC9402CPD provides electrical equivalence across all specified parameters. Pin configuration, voltage ratings, frequency response, and linearity are identical. Direct socket substitution is supported.

Q: What is the difference between 14-CERDIP and 14-PDIP packaging?

A: 14-CERDIP uses a ceramic package body, while 14-PDIP uses a plastic package body. Both maintain identical pin pitch (0.300"), pin count (14), and electrical performance. The material difference does not affect circuit functionality or compatibility.

Q: Why is TC9402EJD listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The TC9402CPD remains in active production, providing a supported alternative for new designs and legacy system maintenance.

Q: Are there compliance differences between the two parts?

A: No. Both TC9402EJD and TC9402CPD maintain identical ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for applications requiring environmental certification.

Q: What inventory considerations apply to this substitution?

A: TC9402EJD inventory is limited to existing stock (1130 pcs). TC9402CPD is actively produced with current inventory of 1247 pcs, providing reliable long-term availability for production requirements.