NJM064D Equivalent & Substitute Parts Reference

Part Overview

The NJM064D is a J-FET operational amplifier integrated circuit manufactured by Nisshinbo Micro Devices Inc., configured as a 4-circuit amplifier in 14-DIP packaging. This component is classified as obsolete, indicating discontinued production and limited availability through standard distribution channels. The identification of equivalent and substitute parts is necessary to maintain design continuity, ensure project completion, and provide alternative sourcing options for applications requiring J-FET amplifier functionality with compatible electrical and mechanical specifications.

Substiute Parts

NJM064D

Nisshinbo Micro Devices Inc.In Stock: 4281NJM064D Datasheet

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LF347N

STMicroelectronicsIn Stock: 40463LF347N Datasheet

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LF347N/NOPB

Texas InstrumentsIn Stock: 1383LF347N/NOPB Datasheet

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TL064ACN

onsemiIn Stock: 5548TL064ACN Datasheet

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TL064CN

onsemiIn Stock: 90733TL064CN Datasheet

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TL064IN

STMicroelectronicsIn Stock: 20205TL064IN Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the NJM064D is determined by strict adherence to the following critical parameters:

Primary Compatibility Criteria:

• Amplifier Type: J-FET configuration
• Number of Circuits: 4 independent amplifier circuits
• Package / Case: 14-DIP (0.300", 7.62mm) form factor
• Mounting Type: Through Hole

Secondary Electrical Parameters (Must Remain Within Acceptable Ranges):

• Slew Rate: 3.5 V/µs or greater
• Gain Bandwidth Product: 1 MHz or greater
• Current - Input Bias: 2 pA or lower (lower values indicate better performance)
• Voltage - Input Offset: 3 mV or lower
• Current - Supply: 200 µA or lower per channel
• Voltage - Supply Span: Must encompass the 4 V to 36 V range or be compatible with the application's supply voltage requirements
• Operating Temperature: Must support the required operating range or be suitable for the intended application environment

Substitute parts identified in this reference meet the primary compatibility criteria and maintain electrical performance characteristics within acceptable engineering tolerances for direct replacement applications.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement Candidates (Identical Electrical Performance):

The TL064CN, TL064ACN, and TL064IN parts maintain identical slew rate (3.5 V/µs) and gain bandwidth product (1 MHz) specifications to the NJM064D. These components are suitable for applications where the original performance envelope must be preserved. TL064IN offers extended operating temperature range (-40°C to 105°C) compared to the NJM064D (-40°C to 85°C), providing additional thermal margin for demanding environments.

Enhanced Performance Alternatives:

The LF347N and LF347N/NOPB provide superior electrical performance with increased slew rate (16 V/µs and 13 V/µs respectively) and higher gain bandwidth product (4 MHz). These parts are suitable for applications tolerant of improved performance characteristics. The LF347N/NOPB is currently in active production status, ensuring long-term availability and supply chain continuity.

Compliance Considerations:

For applications requiring RoHS3 compliance, the LF347N, LF347N/NOPB, and TL064IN are compliant alternatives. The TL064CN, TL064ACN, and NJM064D are RoHS non-compliant and should be selected only when legacy compliance status is acceptable or required by design specifications.

Supply Voltage Compatibility:

Applications operating at supply voltages below 10 V should prioritize TL064IN (minimum 6 V) or NJM064D (minimum 4 V). The LF347N requires minimum 44 V supply voltage and is unsuitable for low-voltage applications. The LF347N/NOPB and TL064CN/TL064ACN require minimum 36 V and 10 V respectively.

Product Status and Availability:

The LF347N/NOPB is the only active production part in this substitution group, providing the most reliable long-term sourcing option. All other parts are obsolete and subject to inventory depletion. Current inventory levels are: NJM064D (4,194 pcs), LF347N (40,400 pcs), LF347N/NOPB (1,315 pcs), TL064ACN (5,462 pcs), TL064CN (90,645 pcs), and TL064IN (20,100 pcs).

Frequently Asked Questions (FAQ)

Q: Can the LF347N be used as a direct replacement for the NJM064D?

A: The LF347N is mechanically compatible (14-DIP package, through-hole mounting) and functionally equivalent as a J-FET 4-circuit amplifier. However, it exhibits higher slew rate (16 V/µs vs. 3.5 V/µs) and higher gain bandwidth product (4 MHz vs. 1 MHz). Applications designed for the NJM064D performance envelope will operate correctly with the LF347N, but the LF347N cannot be used in applications requiring the lower performance specifications of the NJM064D. Additionally, the LF347N requires a minimum supply voltage of 44 V, which may not be compatible with low-voltage applications.

Q: What is the difference between TL064CN and TL064IN?

A: Both parts are manufactured by STMicroelectronics (TL064IN) or onsemi (TL064CN), share identical electrical specifications (3.5 V/µs slew rate, 1 MHz gain bandwidth product), and use the same 14-DIP package. The primary differences are: TL064IN operates over -40°C to 105°C temperature range compared to TL064CN at 0°C to 70°C, and TL064IN is RoHS3 compliant while TL064CN is RoHS non-compliant. Select TL064IN for extended temperature applications or RoHS-compliant designs.

Q: Is the LF347N/NOPB suitable for new designs?

A: Yes. The LF347N/NOPB is the only part in this substitution group with active production status, ensuring continued availability and supply chain reliability. It is RoHS3 compliant and suitable for new designs requiring long-term component sourcing. The "/NOPB" designation indicates lead-free, RoHS-compliant packaging.

Q: What are the supply voltage limitations for each substitute?

A: NJM064D operates at 4 V to 36 V. TL064IN operates at 6 V to 36 V. TL064CN and TL064ACN operate at 10 V to 30 V. LF347N/NOPB operates at 36 V (fixed). LF347N operates at 44 V (fixed). Applications with supply voltages below 6 V must use NJM064D or verify compatibility with the selected substitute's minimum voltage specification.

Q: Can I use a higher-performance part like LF347N in a circuit designed for NJM064D?

A: Mechanical and functional compatibility exists, but circuit behavior may differ due to higher slew rate and gain bandwidth product. Applications sensitive to these performance characteristics (such as precision analog circuits, audio applications with specific frequency response requirements, or circuits with tight stability margins) may exhibit different performance. Circuit re-evaluation is necessary to confirm suitability. Applications with relaxed performance requirements will operate correctly with the enhanced specifications.

Q: What is the input bias current significance in selecting a substitute?

A: Input bias current affects circuit accuracy in high-impedance applications. The NJM064D specifies 2 pA, while substitutes range from 20 pA to 50 pA. For applications where input bias current is a critical design parameter, the lower values of NJM064D or TL064CN/TL064ACN/TL064IN (30 pA) are preferable to LF347N (20 pA) or LF347N/NOPB (50 pA). For general-purpose applications, these differences are typically negligible.

Q: Are all substitute parts pin-compatible with NJM064D?

A: All substitute parts use the 14-DIP (0.300", 7.62mm) package with through-hole mounting, ensuring mechanical and pin-level compatibility. However, electrical performance differences may require circuit verification. Consult individual datasheets to confirm pin assignments and functional equivalence for your specific application.