NJM431M Equivalent & Substitute Parts

Part Overview

The NJM431M is a shunt voltage reference integrated circuit manufactured by Nisshinbo Micro Devices Inc. This adjustable reference IC provides a fixed output voltage of 2.495V with adjustment capability up to 36V, delivering 100 mA output current with ±2.2% tolerance. The device is housed in an 8-SOIC surface mount package and operates across the industrial temperature range of -40°C to 85°C.

The NJM431M is classified as an obsolete product. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications utilizing this voltage reference topology.

Substiute Parts

NJM431M

Nisshinbo Micro Devices Inc.In Stock: 2666NJM431M Datasheet

Current PartRFQ

NJM431M#

Nisshinbo Micro Devices Inc.In Stock: 1057NJM431M# Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the NJM431M is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Reference Type: Shunt
• Output Type: Adjustable
• Voltage - Output (Min/Fixed): 2.495V
• Voltage - Output (Max): 36V
• Current - Output: 100 mA
• Tolerance: ±2.2%
• Current - Cathode: 1 mA
• Operating Temperature Range: -40°C ~ 85°C (TA)

Mechanical Equivalence Criteria:

• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.209", 5.30mm Width)
• Supplier Device Package: 8-DMP

The substitute part NJM431M# meets all electrical and mechanical equivalence requirements, maintaining identical functional specifications while differing in product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The NJM431M# serves as a direct functional equivalent to the NJM431M across all electrical and mechanical specifications. The primary distinctions between these parts are product lifecycle status and regulatory compliance:

Product Status Consideration: The NJM431M is classified as obsolete, while NJM431M# maintains active product status. Active status indicates ongoing manufacturer support, continued availability, and compliance with current manufacturing standards.

Compliance Consideration: NJM431M# is RoHS Compliant and REACH Unaffected, whereas the main part NJM431M is RoHS non-compliant. For applications subject to RoHS or REACH regulatory requirements, NJM431M# is the appropriate selection.

Packaging Consideration: NJM431M# is supplied in Tube packaging, which is standard for active production components. This packaging format supports automated assembly processes and provides protection during handling and storage.

For new designs or production transitions, NJM431M# is the recommended selection due to active product status and regulatory compliance. For legacy system maintenance where RoHS compliance is not required, either part maintains electrical and mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can NJM431M# be used as a direct replacement for NJM431M in existing designs?

A: Yes. NJM431M# is electrically and mechanically equivalent to NJM431M. Both devices provide identical shunt voltage reference functionality with 2.495V minimum output, 36V maximum output, 100 mA output current, and ±2.2% tolerance. The 8-SOIC package and pin configuration are identical, enabling direct PCB-level substitution without design modification.

Q: What is the significance of the product status difference between NJM431M and NJM431M#?

A: NJM431M is classified as obsolete, indicating discontinued production and limited future availability. NJM431M# maintains active status, ensuring ongoing manufacturer support, consistent supply, and compliance with current manufacturing standards. For production continuity, NJM431M# is the preferred selection.

Q: Are there RoHS compliance implications when substituting NJM431M with NJM431M#?

A: Yes. NJM431M is RoHS non-compliant, while NJM431M# is RoHS Compliant. Applications subject to RoHS Directive 2011/65/EU or equivalent regional regulations require the use of RoHS-compliant components. NJM431M# satisfies these regulatory requirements.

Q: Do the packaging differences affect component selection?

A: Packaging format does not affect electrical or mechanical compatibility. NJM431M# is supplied in Tube packaging, which is standard for active production components and supports automated assembly processes. The physical component dimensions and pin configuration remain identical to NJM431M.

Q: What parameters must remain constant for substitution eligibility?

A: Substitution requires equivalence across reference type (Shunt), output type (Adjustable), voltage specifications (2.495V minimum, 36V maximum), current ratings (100 mA output, 1 mA cathode), tolerance (±2.2%), operating temperature range (-40°C to 85°C), and package type (8-SOIC, 8-DMP). Any deviation in these parameters disqualifies a part as a direct substitute.