MF1/4DC3300F Equivalent & Substitute Parts

Part Overview

The MF1/4DC3300F is a 330 Ohms ±1% 0.25W through-hole axial resistor manufactured by KOA Speer Electronics, Inc. This metal film resistor is designed for automotive applications and meets AEC-Q200 qualification standards. The part is currently in active production status with 1993 units available in bulk packaging. Substitute parts are identified when packaging format changes, inventory constraints occur, or alternative manufacturers offer equivalent electrical and mechanical specifications.

Substiute Parts

MF1/4DC3300F

KOA Speer Electronics, Inc.In Stock: 2028MF1/4DC3300F Datasheet

Current PartRFQ

MF1/4DCT52R3300F

KOA Speer Electronics, Inc.In Stock: 6053MF1/4DCT52R3300F Datasheet

Parametric EquivalentRFQ

RNMF14FTC330R

Stackpole Electronics IncIn Stock: 33300RNMF14FTC330R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MF1/4DC3300F are classified based on the following criteria:

Parametric Equivalent (MF1/4DCT52R3300F): This part maintains identical electrical specifications (330 Ohms, ±1% tolerance, 0.25W power rating, metal film composition, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range) and mechanical form factor (axial through-hole, 2.30mm × 6.30mm dimensions). The only difference is packaging format: Cut Tape (CT) versus Bulk. Both are manufactured by KOA Speer Electronics, Inc., and both carry AEC-Q200 automotive qualification and ROHS3 compliance.

Similar Manufacturer Part (RNMF14FTC330R): This Stackpole Electronics Inc. part matches the core electrical requirements (330 Ohms, ±1% tolerance, 0.25W power rating, metal film composition, -55°C to 155°C operating range) and maintains axial through-hole packaging. Differences include: temperature coefficient of ±50ppm/°C (tighter than ±100ppm/°C), smaller physical dimensions (1.78mm × 3.30mm versus 2.30mm × 6.30mm), and flame retardant coating with safety features. Both parts are ROHS3 compliant and carry equivalent automotive-grade certifications.

Parameter Comparison

Engineering Selection Recommendations

MF1/4DCT52R3300F Selection: Choose this parametric equivalent when Cut Tape packaging is required for automated assembly processes or when bulk packaging is unavailable. Electrical and mechanical specifications are identical to the main part, ensuring direct functional compatibility. Both parts carry identical AEC-Q200 automotive qualification and ROHS3 compliance status.

RNMF14FTC330R Selection: This alternative is suitable when space constraints require a smaller form factor (1.78mm × 3.30mm versus 2.30mm × 6.30mm). The tighter temperature coefficient (±50ppm/°C) provides improved stability in temperature-sensitive applications. Flame retardant coating and safety features offer additional environmental protection. All three parts maintain equivalent electrical performance and automotive-grade compliance, with selection based on physical space availability and packaging requirements.

Frequently Asked Questions (FAQ)

Q: Can MF1/4DCT52R3300F be used as a direct replacement for MF1/4DC3300F?

A: Yes. Both parts are manufactured by KOA Speer Electronics, Inc., with identical electrical specifications (330 Ohms, ±1%, 0.25W, ±100ppm/°C, -55°C to 155°C) and mechanical form factor (2.30mm × 6.30mm axial). The only difference is packaging: Bulk versus Cut Tape. Both carry AEC-Q200 qualification and ROHS3 compliance.

Q: What are the physical space implications of using RNMF14FTC330R?

A: The RNMF14FTC330R is significantly smaller: 1.78mm × 3.30mm compared to 2.30mm × 6.30mm for the main part. This 25% reduction in diameter and 48% reduction in length makes it suitable for compact PCB layouts. Verify that your PCB footprint and component spacing accommodate the smaller dimensions.

Q: Does RNMF14FTC330R offer better temperature stability?

A: The RNMF14FTC330R has a temperature coefficient of ±50ppm/°C, compared to ±100ppm/°C for the main part. This represents a 50% improvement in temperature stability, making it preferable for precision applications requiring tighter resistance tolerance across the -55°C to 155°C operating range.

Q: Are all three parts suitable for automotive applications?

A: Yes. MF1/4DC3300F and MF1/4DCT52R3300F both carry AEC-Q200 automotive qualification. RNMF14FTC330R is automotive-grade with equivalent compliance certifications. All three parts are ROHS3 compliant and suitable for automotive circuit designs.

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

A: Bulk packaging is used for manual assembly and small-volume applications. Cut Tape (CT) packaging is formatted for automated pick-and-place assembly equipment. Electrical and mechanical specifications remain identical; packaging selection depends on assembly process requirements.