MLF14FTC221R Equivalent & Substitute Parts

Part Overview

The MLF14FTC221R is a 221 Ohm ±1% 1/4W (0.25W) thin film chip resistor in MELF 0204 package manufactured by Stackpole Electronics Inc. This component is actively produced and widely used in precision analog circuits, measurement equipment, and general-purpose applications requiring tight tolerance resistors. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained within the allowed parameter ranges for this resistor category.

Substiute Parts

MLF14FTC221R

Stackpole Electronics IncIn Stock: 861MLF14FTC221R Datasheet

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MMA02040C2210FB300

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 392272MMA02040C2210FB300 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the MLF14FTC221R is determined by strict equivalence in the following parameters:

• Resistance value: 221 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Package/Case: MELF 0204 (mechanical and electrical compatibility)
• Composition: Thin Film (performance characteristics)
• Temperature Coefficient: ±50ppm/°C (stability requirements)
• Operating Temperature Range: -55°C to 155°C (environmental compatibility)
• RoHS3 Compliance: Required for regulatory alignment
• Moisture Sensitivity Level: 1 (handling and storage compatibility)

The substitute part MMA02040C2210FB300 meets all these criteria. The power rating difference (0.4W vs. 0.25W) represents an upgrade that maintains full backward compatibility, as the substitute can handle all applications designed for the original 0.25W specification.

Parameter Comparison

Engineering Selection Recommendations

The MMA02040C2210FB300 is a direct substitute for the MLF14FTC221R based on electrical and mechanical equivalence. Both components are active products with ROHS3 compliance and identical core specifications (resistance, tolerance, temperature coefficient, operating range, and package type).

The substitute offers additional features including anti-sulfur coating and AEC-Q200 automotive qualification, which provide enhanced reliability in demanding environments. The increased power rating (0.4W vs. 0.25W) ensures the substitute can handle all applications designed for the original component without derating.

Physical dimensions are compatible, with a negligible 0.004" (0.10mm) length difference that does not affect PCB layout or mechanical assembly.

Frequently Asked Questions (FAQ)

Q: Can MMA02040C2210FB300 replace MLF14FTC221R in all applications?

A: Yes. The substitute meets all electrical specifications of the original part. The higher power rating (0.4W vs. 0.25W) is a performance upgrade that maintains full backward compatibility.

Q: Are the physical dimensions identical?

A: The diameter is identical (0.055" / 1.40mm). The length differs by 0.004" (0.10mm): MLF14FTC221R is 0.138" (4.60mm), while MMA02040C2210FB300 is 0.142" (3.60mm). This minimal difference is compatible with standard MELF 0204 PCB footprints.

Q: Do both parts have the same temperature stability?

A: Yes. Both components have a temperature coefficient of ±50ppm/°C and operate across the identical range of -55°C to 155°C.

Q: What is the significance of the AEC-Q200 rating on the substitute?

A: AEC-Q200 is an automotive qualification standard. While the original MLF14FTC221R does not carry this rating, the substitute MMA02040C2210FB300 meets automotive reliability requirements, making it suitable for both general-purpose and automotive applications.

Q: Are both parts RoHS compliant?

A: Yes. Both MLF14FTC221R and MMA02040C2210FB300 are ROHS3 compliant and have MSL 1 (Unlimited) moisture sensitivity ratings.