The MF series metal film resistors are manufactured using vacuum sputtering system to deposit multiple layers of mixed metals and passiivative materials onto a carefully treated high grade ceramic substrate, the resistors are coated with layers of light-blue lacquer. The MF series encompasses an unusually broad selection of power rating (1/8W, 1/4W, 1/2W, 1W, 2W, at 70 Celsius), tolerance (+/-0.1%, 0.25%, 0.5%, 1%) and temperature coefficient (25ppm, 50pp, 100ppm), in all their combinations with full MIL-R-10509 performance.
Specifications
- MF-12:
- MIL: RN-50
- Tolerance: +/-1.0%, +/-0.5%, +/-0.25%
- TC +/- 25ppm: 100ohm-100Kohm
- TC +/- 50ppm: 10ohm-1Mohm
- TC +/-10ppm: 10ohm-1Mohm (standard resistance is 10ohm-1Mohm, below or over this resistance on request)
- MF-25:
- MIL: RN-55
- Tolerance: +/-1.0%, +/-0.5%, +/-0.25%, and +/-1%
- TC +/- 25ppm: 51.1ohm-511Kohm, 100ohm-330Kohm, 100ohm-100Kohm
- TC +/- 50ppm: 10ohm-1Mohm
- TC +/-10ppm: 10ohm-1Mohm (standard resistance is 10ohm-1Mohm, below or over this resistance on request)
- MF-50:
- MIL: RN-60
- Tolerance: +/-1.0%, +/-0.5%, +/-0.25%, and +/-1%
- TC +/- 25ppm: 51.1ohm-1Mohm, 100ohm-511Kohm, 100ohm-330Kohm
- TC +/- 50ppm: 10ohm-1Mohm
- TC +/-10ppm: 10ohm-1Mohm (standard resistance is 10ohm-1Mohm, below or over this resistance on request)
- MF-100:
- MIL: RN-65
- Tolerance: +/-1.0%, +/-0.5%, +/-0.25%, and +/-1%
- TC +/- 25ppm: 51.1ohm-1Mohm, 100ohm-511Kohm, 100ohm-330Kohm
- TC +/- 50ppm: 10ohm-1Mohm
- TC +/-10ppm: 10ohm-1Mohm (standard resistance is 10ohm-1Mohm, below or over this resistance on request)
- MF-200:
- MIL: RN-60
- Tolerance: +/-1.0%, +/-0.5%, +/-0.25%, and +/-1%
- TC +/- 25ppm: 51.1ohm-1Mohm, 100ohm-511Kohm, 100ohm-330Kohm
- TC +/- 50ppm: 10ohm-1Mohm
- TC +/-10ppm: 10ohm-1Mohm (standard resistance is 10ohm-1Mohm, below or over this resistance on request)
- Temperature cycling, -65 Celsius to +150 Celsius (%):
- Resistance change (delta R): 0.25
- MIL-R-22684 style RL requirement: 1.00
- MIL-R-10509 style RN requirement: 0.50
- Low temperature operation, -65 Celsius (%):
- Resistance change (delta R): 0.50
- MIL-R-22684 style RL requirement: 0.50
- MIL-R-10509 style RN requirement: 0.50
- Short time overload (%):
- Resistance change (delta R): 0.25
- MIL-R-22684 style RL requirement: 0.50
- MIL-R-10509 style RN requirement: 0.50
- Terminal strength, 5Ib pull (%):
- Resistance change (delta R): 0.20
- MIL-R-22684 style RL requirement: 0.50
- MIL-R-10509 style RN requirement: 0.20
- Resistance to soldering heat, +350 Celsius (%):
- Resistance change (delta R): 0.10
- MIL-R-22684 style RL requirement: 0.50
- MIL-R-10509 style RN requirement: 0.50
- Moisture resistance, MIL-Std-202 (%):
- Resistance change (delta R): 0.50
- MIL-R-22684 style RL requirement: 1.50
- MIL-R-10509 style RN requirement: 1.50
- Life 1000hrs (rated power) (%):
- Resistance change (delta R): 0.50
- MIL-R-22684 style RL requirement: 2.00
- MIL-R-10509 style RN requirement: 1.00
- Shock, 50G, 11ms (%):
- Resistance change (delta R): 0.25
- MIL-R-22684 style RL requirement: 0.50
- MIL-R-10509 style RN requirement: 0.50
- Vibration-high frequency, 10-2000Hz (%):
- Resistance change (delta R): 0.25
- MIL-R-22684 style RL requirement: 0.50
- MIL-R-10509 style RN requirement: 0.50
- Insulation resistance (%):
- Resistance change (delta R): >= 10^10ohm
- MIL-R-22684 style RL requirement: >= 10^9ohm
- MIL-R-10509 style RN requirement: >= 10^9ohm
- Failure-rate (%):
- Resistance change (delta R): < 10^-8/h
Features
- Din style:
- Din-44061: 0204, 0207, 0309, 0411, 0617
- MIL style:
- MIL-R10509F (char. D&C)
- RN-50, RN-55, RN-60, RN-65, RN-70
- Power rating:
- 1/8W, 1/4W, 1/2W, 1W, 2W (at 70 Celsius)
- 1/20W, 1/10W, 1/8W, 1/4W, 1/2W (at 125 Celsius)
- Resistance tolerance: +/-0.1%, +/-0.25%, +/-0.5%, +/-1%
- Temp. coefficient: +/-25ppm/Celsius, +/-50ppm/Celsius, +/-100ppm/Celsius
- Power derating curve: for resistor operated in ambient temperatures above 70 Celsius, power rating must be derated in accordance with curve below.
| Style | MIL | Power rating (W) 70 Celsius | Power rating (W) 125 Celsius | Maximum working voltage 70 Celsius | Maximum working voltage 125 Celsius | Maximum overload voltage 70 Celsius | Maximum overload voltage 125 Celsius | Dimension (L)(mm) | Dimension (D)(mm) | Dimension (H)(mm) | Dimension (d +/- 0.02)(mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MF-12 | RN-50 | 0.125W | 0.05W | 200 | 150 | 400 | 300 | 3.2 +/- 0.2 | 1.6 +/- 0.2 | 28 +/- 0.1 | 0.48 |
| MF-25 | RN-55 | 0.25W | 0.1W | 250 | 200 | 500 | 400 | 6.0 +/- 0.5 | 2.3 +/- 0.3 | 28 +/- 1.0 | 0.60 |
| MF-50 | RN-60 | 0.5W | 0.125W | 350 | 250 | 700 | 500 | 9.0 +/- 0.5 | 3.0 +/- 0.5 | 28 +/- 1.0 | 0.70 |
| MF-100 | RN-65 | 1W | 0.25W | 500 | 300 | 1000 | 600 | 11 +/- 1.0 | 4.0 +/- 0.5 | 35 +/- 3.0 | 0.80 |
| MF-200 | RN-70 | 2W | 0.5W | 500 | 350 | 1000 | 700 | 15 +/- 1.0 | 5.0 +/- 0.5 | 35 +/- 3.0 | 0.80 |
Main Products
resistor ( electronic components )