HA3-2425-5 Equivalent & Substitute Parts

Part Overview

The HA3-2425-5 is a Sample and Hold Amplifier manufactured by Renesas Electronics Corporation, housed in a 14-PDIP package. This integrated circuit is designed for precision sampling and holding of analog signals in data acquisition and signal processing applications. The device is currently classified as obsolete, necessitating identification of functionally compatible alternatives for ongoing system support and new design implementations.

Substiute Parts

HA3-2425-5

Renesas Electronics CorporationIn Stock: 3103HA3-2425-5 Datasheet

Current PartRFQ

HA3-2525-5Z

Renesas Electronics CorporationIn Stock: 1613HA3-2525-5Z Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HA3-2425-5 requires evaluation based on the following critical parameters:

Functional Classification: The HA3-2425-5 is a Sample and Hold amplifier. Direct substitutes must maintain this functional category or provide equivalent signal acquisition and retention capabilities.

Electrical Performance Envelope: Substitutes must operate within the specified supply voltage range (24 V to 30 V minimum) and maintain compatibility with the input bias current (40 nA), input offset voltage (3 mV), and output current capability (15 mA per channel).

Frequency Response: The gain bandwidth product of 2.5 MHz and slew rate of 5 V/µs define the signal processing speed. Substitutes with equal or superior performance in these parameters are acceptable.

Package and Mounting: The 14-DIP through-hole package is a primary constraint. Physical compatibility with existing PCB layouts and assembly processes is mandatory.

Compliance and Availability: Product status (active vs. obsolete) and RoHS compliance status are secondary selection criteria based on application requirements and regulatory constraints.

The identified substitute HA3-2525-5Z is classified as a General Purpose Amplifier rather than a dedicated Sample and Hold device. This represents a functional category change and introduces parameter deviations that must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The HA3-2425-5 is classified as obsolete. The HA3-2525-5Z is active and currently in production, providing long-term availability and supply chain stability.

Compliance Status: The HA3-2425-5 is RoHS non-compliant, while the HA3-2525-5Z is ROHS3 compliant. Applications subject to RoHS regulations or customer requirements for compliant components favor the HA3-2525-5Z.

Package Compatibility: The HA3-2425-5 uses a 14-DIP package, while the HA3-2525-5Z uses an 8-DIP package. Direct PCB layout substitution is not possible without redesign. Pin count and pinout differences require circuit modification.

Functional Classification Mismatch: The HA3-2425-5 is a dedicated Sample and Hold amplifier, while the HA3-2525-5Z is a general-purpose amplifier. Applications requiring specific sample-and-hold functionality must evaluate whether general-purpose amplifier performance is acceptable.

Electrical Parameter Deviations: The HA3-2525-5Z exhibits superior performance in slew rate (120 V/µs vs. 5 V/µs) and gain bandwidth product (20 MHz vs. 2.5 MHz), but higher input bias current (125 nA vs. 40 nA) and input offset voltage (5 mV vs. 3 mV). Supply voltage minimum requirement is lower (8 V vs. 24 V), expanding operational flexibility.

Selection of the HA3-2525-5Z as a substitute requires circuit redesign to accommodate package differences and functional category change. Applications with strict sample-and-hold requirements should evaluate alternative dedicated sample-and-hold amplifiers from the Renesas portfolio or other manufacturers.

Frequently Asked Questions (FAQ)

Q: Can the HA3-2525-5Z be directly substituted for the HA3-2425-5 on existing PCBs?

A: No. The HA3-2425-5 uses a 14-DIP package with 14 pins, while the HA3-2525-5Z uses an 8-DIP package with 8 pins. Physical and electrical redesign is required. Pin assignments and circuit topology must be re-evaluated.

Q: What is the primary functional difference between these two devices?

A: The HA3-2425-5 is a dedicated Sample and Hold amplifier designed for signal acquisition and retention. The HA3-2525-5Z is a general-purpose amplifier suitable for buffering, gain, and filtering applications. Functional requirements determine substitution feasibility.

Q: Does the HA3-2525-5Z meet RoHS compliance requirements?

A: Yes. The HA3-2525-5Z is ROHS3 compliant. The HA3-2425-5 is RoHS non-compliant. Applications requiring RoHS-compliant components must use the HA3-2525-5Z or identify alternative compliant devices.

Q: How do the supply voltage requirements differ?

A: The HA3-2425-5 requires 24 V to 30 V supply voltage. The HA3-2525-5Z operates from 8 V to 36 V. The HA3-2525-5Z provides broader supply voltage flexibility but requires circuit redesign to accommodate lower minimum voltage operation if applicable.

Q: What are the input bias current implications for substitution?

A: The HA3-2425-5 has 40 nA input bias current; the HA3-2525-5Z has 125 nA. Higher input bias current in the substitute may affect circuit accuracy in high-impedance signal paths. Input impedance and bias current compensation must be re-evaluated.

Q: Is the HA3-2525-5Z suitable for sample-and-hold applications?

A: The HA3-2525-5Z is a general-purpose amplifier without dedicated sample-and-hold circuitry. While it can be configured for sampling applications with external components, it does not provide the integrated sample-and-hold functionality of the HA3-2425-5. Application-specific evaluation is required.

Q: What is the inventory status of these devices?

A: The HA3-2425-5 has 3020 pieces in stock (obsolete status). The HA3-2525-5Z has 1590 pieces in stock (active status). Long-term availability is assured only for the active HA3-2525-5Z.