MF1/4DCT52R6340F Equivalent & Substitute Parts

Part Overview

The MF1/4DCT52R6340F is a 634 Ohms ±1% 0.25W through-hole resistor manufactured by KOA Speer Electronics, Inc. This metal film axial resistor is designed for automotive applications and meets AEC-Q200 qualification standards. The part is currently in active production status with 1104 units available in inventory. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same resistance value, tolerance, power rating, and package type.

Substiute Parts

MF1/4DCT52R6340F

KOA Speer Electronics, Inc.In Stock: 1114MF1/4DCT52R6340F Datasheet

Current PartRFQ

MFR-25FBF52-634R

YAGEOIn Stock: 15870MFR-25FBF52-634R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MF1/4DCT52R6340F is determined by strict equivalence across the following critical parameters:

• Resistance value: 634 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.25W / 1/4W (exact match required)
• Composition: Metal Film (exact match required)
• Package configuration: Axial through-hole (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Operating temperature range: -55°C to 155°C (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)

The MFR-25FBF52-634R manufactured by YAGEO meets all substitution criteria and is classified as an equivalent part for direct replacement applications.

Parameter Comparison

Engineering Selection Recommendations

Both the MF1/4DCT52R6340F and MFR-25FBF52-634R are active production parts with ROHS3 compliance and REACH unaffected status. The MF1/4DCT52R6340F carries AEC-Q200 automotive qualification, while the MFR-25FBF52-634R does not specify automotive qualification in the provided data. Selection between these parts should be based on application requirements regarding automotive certification. For non-automotive applications or where automotive qualification is not mandated, either part is electrically and mechanically equivalent. The dimensional variance (0.091" vs 0.094" diameter) is within typical manufacturing tolerances for axial resistors and does not affect functional performance in standard PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can MFR-25FBF52-634R replace MF1/4DCT52R6340F in automotive applications?

A: The MFR-25FBF52-634R is electrically and mechanically equivalent. However, the MF1/4DCT52R6340F carries AEC-Q200 automotive qualification while the YAGEO part does not specify this certification in the provided specifications. Automotive applications requiring AEC-Q200 compliance should use the original MF1/4DCT52R6340F.

Q: Are there dimensional compatibility concerns between these parts?

A: The diameter differs slightly (2.30mm vs 2.40mm), but both maintain the same 6.30mm length. This minor dimensional variance is within standard tolerances for axial through-hole resistors and does not affect PCB footprint compatibility or soldering performance.

Q: What electrical parameters must match for substitution?

A: Resistance value (634 Ohms), tolerance (±1%), power rating (0.25W), composition (metal film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C) must all match exactly for valid substitution.

Q: Are both parts RoHS compliant?

A: Yes, both MF1/4DCT52R6340F and MFR-25FBF52-634R are ROHS3 compliant and REACH unaffected.

Q: What is the difference between Cut Tape and Bulk packaging?

A: The MF1/4DCT52R6340F is supplied in Cut Tape (CT) packaging, while the MFR-25FBF52-634R is supplied in Bulk packaging. This affects order quantities and handling but does not impact component performance or electrical characteristics.