OP42AZ Equivalent & Substitute Parts

Part Overview

The OP42AZ is a J-FET operational amplifier manufactured by Analog Devices Inc., housed in an 8-CDIP ceramic dual-in-line package. This linear amplifier circuit is designed for applications requiring high input impedance and low input bias current characteristics inherent to J-FET input stages. The OP42AZ is classified as obsolete, which necessitates identification of equivalent substitute components for ongoing system support and new design implementations. The availability of active production alternatives ensures continued access to functionally compatible devices with identical electrical and mechanical specifications.

Substiute Parts

OP42AZ

Analog Devices Inc.In Stock: 1472OP42AZ Datasheet

Current PartRFQ

OP42AZ/883C

Analog Devices Inc.In Stock: 1445OP42AZ/883C Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OP42AZ is determined by strict equivalence across all electrical and mechanical parameters. The substitute component must maintain identical specifications in the following critical areas:

Electrical Parameters:

• Amplifier topology (J-FET input stage)
• Slew rate (52 V/µs)
• Gain bandwidth product (10 MHz)
• Input bias current (80 pA)
• Input offset voltage (300 µV)
• Supply current (5.1 mA)
• Output current per channel (33 mA)
• Supply voltage range (16 V to 40 V)
• Operating temperature range (-55°C to 125°C)

Mechanical Parameters:

• Package type (8-CDIP ceramic dual-in-line)
• Physical dimensions (0.300", 7.62mm)
• Through-hole mounting configuration

The OP42AZ/883C qualifies as a direct substitute based on complete parameter alignment across all specified electrical and mechanical characteristics. The primary distinction is product status and qualification level rather than functional performance.

Parameter Comparison

Engineering Selection Recommendations

OP42AZ/883C Selection Basis:

The OP42AZ/883C is the direct substitute for the obsolete OP42AZ. This component maintains complete electrical and mechanical equivalence while offering the following advantages:

1. Active Production Status: The OP42AZ/883C is in active production, ensuring long-term availability and supply chain continuity.

2. Military Grade Qualification: The OP42AZ/883C carries MIL-STD-883 qualification, indicating compliance with military-grade manufacturing and testing standards. This qualification encompasses additional screening, testing, and documentation requirements beyond standard commercial specifications.

3. Identical Functional Performance: All electrical parameters—including slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, output current, and operating temperature range—are identical to the OP42AZ.

4. Package Compatibility: The 8-CDIP ceramic package with 0.300" (7.62mm) spacing is identical, enabling direct pin-for-pin replacement in existing through-hole PCB designs without layout modifications.

5. Compliance Status: The OP42AZ/883C is RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

For applications requiring component replacement or new designs, the OP42AZ/883C provides full functional equivalence with enhanced qualification and active production support.

Frequently Asked Questions (FAQ)

Q: Can the OP42AZ/883C be used as a direct replacement for the OP42AZ?

A: Yes. The OP42AZ/883C is electrically and mechanically identical to the OP42AZ across all specified parameters. Pin configuration, package dimensions, and electrical characteristics are equivalent, enabling direct substitution in existing designs.

Q: What is the significance of the "/883C" designation in the OP42AZ/883C part number?

A: The "/883C" suffix indicates MIL-STD-883 qualification. This military-grade specification encompasses enhanced manufacturing controls, testing protocols, and documentation requirements. The "C" denotes the specific revision level of the military standard applied.

Q: Are there any differences in operating temperature range between the OP42AZ and OP42AZ/883C?

A: No. Both devices operate across the identical temperature range of -55°C to 125°C.

Q: Is the OP42AZ/883C suitable for commercial applications?

A: Yes. Military-grade components are fully functional in commercial applications. The MIL-STD-883 qualification represents an additional level of quality assurance and does not restrict use to military applications.

Q: What is the package type for both the OP42AZ and OP42AZ/883C?

A: Both devices use an 8-CDIP (ceramic dual-in-line package) with 0.300" (7.62mm) lead spacing. This is a through-hole package suitable for traditional PCB assembly methods.

Q: Are there any supply voltage differences between these devices?

A: No. Both the OP42AZ and OP42AZ/883C operate with identical supply voltage specifications: minimum 16 V and maximum 40 V.

Q: What is the input bias current specification for these devices?

A: Both devices have an input bias current of 80 pA (picoamperes), which is characteristic of J-FET input amplifiers and provides high input impedance suitable for precision measurement applications.

Q: Is the OP42AZ/883C RoHS compliant?

A: Yes. The OP42AZ/883C is RoHS3 compliant and REACH unaffected, meeting current environmental regulations for electronic components.