• Resi

Precision Metal Film Molded Resistor

Resi MMFR Series

A highโ€‘stability precision metal film resistor with 10ฮฉ to 1Mฮฉ range, 0.25Wโ€“1W rating, ultra-tight ยฑ0.05% tolerance, low ยฑ5 ppm/ยฐC TCR, and durable through-hole, moisture-resistant construction.

  • Compliant

The RESI MMFR Series is a precision metal film resistor designed for electronic circuits requiring low temperature drift, high stability and accurate resistance performance.
Manufactured using 96% alumina ceramic cores with precision metal film deposition technology, the MMFR Series is laser trimmed to achieve accurate resistance values across a range from 10ฮฉ to 1Mฮฉ.

With a low TCR down to ยฑ5ppm/ยฐC, tolerance options as tight as ยฑ0.05% and load life stability of ยฑ0.05%, the MMFR Series is well suited to precision circuits where long-term resistance stability is critical.
Its through-hole pin structure also helps reduce the influence of PCB stress on resistor performance, making it a reliable choice for demanding measurement and control applications.

Key Features

  • Precision metal film resistor technology
  • 96% alumina ceramic core construction
  • Resistance range: 10ฮฉ to 1Mฮฉ
  • Rated power: 0.25W to 1W
  • Tightest tolerance: ยฑ0.05%
  • Low TCR: ยฑ5ppm/ยฐC
  • Load life stability: ยฑ0.05%
  • Through-hole mounting
  • Strong moisture resistance
  • RoHS compliant

Application Industries and Use Cases

  • Precision Instrumentation: Stable resistance in measurement, calibration and signal conditioning circuits.
  • Industrial Electronics: Accurate control and monitoring circuits requiring low drift and long-term reliability.
  • Test & Measurement: Precision resistor networks for laboratory equipment and electronic test systems.

Specifications

Product Type

, ,

Series / Model

Mounting / Size

, , , ,

Minimum Resistance

10ฮฉ

Maximum Resistance

1Mฮฉ

Temperature Coefficient

Tolerance

, , ,

Power Rating

, , ,

Max. Operating Voltage

250V, 300V, 350V, 400V

Temperature Range

-50 to +125ยฐC

Ordering Info

Below is the model number configuration for the MFFR series from Resi.
Ordering example: Example: MMFR3710B100RV9 ( MMFR 3710 ยฑ1.0% 100ฮฉ ยฑ5ppm/โ„ƒ Standard )
MFFRMFFRXXXXXXX

Series / Model (MFFR)

MFFR
MFFR

Actual Energy Failure ()

Tolerance (X)

A
ยฑ0.05%
B
ยฑ0.1%
D
ยฑ0.5%
F
ยฑ1%

Resistance (XXXX)

Example:

10R0=10ฮฉ
1K00=1000ฮฉ
1M00=1000000ฮฉ

Temperature Coefficient (X)

V
ยฑ5 ppm/ยฐC

Code (X)

0-8 – Custom

9 – Standard

Due to the technical complexity nature of these components, complete specifications, performance data, dimensional information and configuration options are provided within the product datasheet.

Resources

Product Datasheet

Related Products

Resi MMFR Series