MLF14FTC4K99 Equivalent & Substitute Parts

Part Overview

The MLF14FTC4K99 is a 4.99 kOhms ±1% 1/4W MELF 0204 thin film chip resistor manufactured by Stackpole Electronics Inc. This component is classified as Active and maintains full RoHS3 compliance with unlimited moisture sensitivity rating. The part is supplied in Tape & Reel packaging with 852 units currently in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are required due to inventory constraints, supply chain considerations, or application-specific performance requirements.

Substiute Parts

MLF14FTC4K99

Stackpole Electronics IncIn Stock: 942MLF14FTC4K99 Datasheet

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MMA02040C4991FB300

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 3501MMA02040C4991FB300 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MLF14FTC4K99 is determined by the following critical parameters:

• Resistance value: 4.99 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Package/Case: MELF 0204 (exact match required)
• Composition: Thin Film (exact match required)
• Temperature Coefficient: ±50ppm/°C (exact match required)
• Operating Temperature Range: -55°C to 155°C (minimum requirement)
• RoHS3 Compliance: Required

The substitute part MMA02040C4991FB300 meets all critical substitution criteria. The increased power rating (0.4W versus 0.25W) represents an upgrade that maintains backward compatibility, as the higher power rating accommodates the same electrical load with additional thermal margin. Physical dimensions remain within the MELF 0204 specification envelope.

Parameter Comparison

Engineering Selection Recommendations

The MLF14FTC4K99 and MMA02040C4991FB300 are electrically and mechanically interchangeable for applications requiring a 4.99 kOhms ±1% thin film MELF 0204 resistor. Both components maintain identical resistance, tolerance, temperature coefficient, and operating temperature specifications. Both achieve RoHS3 compliance and MSL 1 rating.

The MMA02040C4991FB300 provides additional design margin through its 0.4W power rating compared to the 0.25W rating of the MLF14FTC4K99. The substitute part includes anti-sulfur treatment and AEC-Q200 automotive qualification, features that do not degrade performance in non-automotive applications. Selection between these parts should be based on availability, supply chain requirements, and application-specific certifications.

Frequently Asked Questions (FAQ)

Q: Can MMA02040C4991FB300 replace MLF14FTC4K99 in existing designs?

A: Yes. Both components share identical electrical specifications (4.99 kOhms ±1%, ±50ppm/°C temperature coefficient, -55°C to 155°C operating range) and package type (MELF 0204). The higher power rating of the substitute part (0.4W versus 0.25W) provides additional thermal capability without affecting circuit performance.

Q: Are there physical dimension differences between these parts?

A: Both components conform to MELF 0204 package specifications. The MLF14FTC4K99 measures 0.055" diameter × 0.138" length (1.40mm × 4.60mm). The MMA02040C4991FB300 measures 0.055" diameter × 0.142" length (1.40mm × 3.60mm). This 0.004" length difference remains within standard MELF 0204 tolerance and does not affect PCB assembly or circuit operation.

Q: What compliance certifications apply to both parts?

A: Both components are RoHS3 compliant, REACH unaffected, and classified as MSL 1 (unlimited moisture sensitivity). The MMA02040C4991FB300 additionally carries AEC-Q200 automotive qualification, which does not restrict its use in non-automotive applications.

Q: Are these parts suitable for high-reliability applications?

A: Both components are thin film resistors with ±50ppm/°C temperature coefficient and stable performance across the -55°C to 155°C operating range. Selection should be based on specific application requirements and any additional certifications mandated by the end-use industry.