Metal Film Fixed Resistor UNI-ROYAL MFR03SF100KA10 with 1 8 Watt Power Rating and 1 Percent Tolerance
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Product Description
UNIROYAL ELECTRONICS INDUSTRY CO., LTD. - LEAD-FREE METAL FILM FIXED RESISTORS (MFR SERIES)
This document specifies the Lead-Free Metal Film Fixed Resistors manufactured by UNIOHM. These resistors are designed for various electronic applications requiring precise resistance values and stable performance.
Product Attributes
- Brand: UNIROYAL ELECTRONICS INDUSTRY CO., LTD. (UNIOHM)
- Product Name: LEAD-FREE METAL FILM FIXED RESISTORS
- Part Name: MFR SERIES
- Origin: CHINA
- Certifications: Complies with JIS C 0802
Technical Specifications
| Type | Power Rating | Dimensions (mm) D x L | Body Diameter (d0.05) | Lead Diameter (H3) | Max Working Voltage | Max Overload Voltage | Dielectric Withstanding Voltage | Tolerance | Resistance Range |
|---|---|---|---|---|---|---|---|---|---|
| MF 1/8W | 1/8W | 1.90.3 x 3.30.3 | 0.45 | 28 | 200V | 400V | 400V | 1%, 2% | 10~1M |
| 5% | 1~1M | ||||||||
| MF 1/4W | 1/4W | 2.20.3 x 6.51.0 | 0.54 | 28 | 250V | 500V | 500V | 1%, 2% | 10~1M |
| 5% | 1~1M | ||||||||
| MF 1/2W | 1/2W | 3.00.6 x 9.51.0 | 0.54 | 28 | 350V | 700V | 700V | 1%, 2% | 10~1M |
| 5% | 1~1M | ||||||||
| MF 1W | 1W | 4.50.6 x 11.51.0 | 0.65 | 28 | 500V | 1000V | 1000V | 1%, 2% | 51.1~1M |
| 5% | 1~1M | ||||||||
| MF 2W | 2W | 5.00.6 x 15.51.0 | 0.70 | 28 | 500V | 1000V | 1000V | 1%, 2% | 51.1~1M |
| 5% | 1~1M | ||||||||
| MF 3W | 3W | 6.00.6 x 17.51.0 | 0.75 | 28 | 500V | 1000V | 1000V | 1%, 2% | 51.1~1M |
| 5% | 1~1M | ||||||||
| MF 1/4WS | 1/4W | 1.90.5 x 3.30.3 | 0.45 | 28 | 200V | 400V | 200V | 1%, 2% | 10~1M |
| 5% | 1~1M | ||||||||
| MF 0.4WSS | 0.4W | 1.90.5 x 3.30.3 | 0.45 | 28 | 200V | 400V | 200V | 1%, 2% | 10~1M |
| 5% | 1~1M | ||||||||
| MF 1/2WSS | 1/2W | 2.20.5 x 6.50.5 | 0.54 | 28 | 250V | 500V | 250V | 1% | 10~1M |
| 2%, 5% | 1~1M | ||||||||
| MF 1/2WS | 1/2W | 2.70.5 x 9.01.0 | 0.54 | 28 | 350V | 700V | 700V | 1%, 2% | 10~1M |
| 5% | 1~1M | ||||||||
| MF 0.6WS | 0.6W | 2.20.5 x 6.51.0 | 0.54 | 28 | 250V | 500V | 250V | 1% | 10~1M |
| 2%, 5% | 1~1M | ||||||||
| MF 1WS | 1W | 3.50.6 x 9.51.0 | 0.60 | 28 | 350V | 700V | 350V | 1%, 2%, 5% | 10~1M |
| MF 2WS | 2W | 4.00.6 x 11.51.0 | 0.65 | 28 | 500V | 1000V | 350V | 1%, 2%, 5% | 10~1M |
| MF 3WS | 3W | 5.00.6 x 15.51.0 | 0.70 | 28 | 500V | 1000V | 350V | 1%, 2%, 5% | 10~1M |
| Item | Limits | Test Method |
|---|---|---|
| Temperature Coefficient | 0.1% 15 PPM/Max. 0.25% 25 PPM/Max. 0.5% 50PPM/Max. 1% 50PPM/Max. 2% 100PPM/Max. 5% 200PPM/Max. | 4.8 Natural resistance changes per temp. Degree centigrade |
| Short-time overload | (0.5%+0.05)Max. | 4.13 Permanent resistance change after the application of a potential of 2.5 times RCWV for 5 seconds. |
| Dielectric withstanding voltage | No evidence of flashover mechanical damage, arcing or insulation break down. | 4.7 Resistors shall be clamped in the trough of a 90metallic v-block and shall be tested at ac potential respectively specified in the above list for 60-70 seconds. |
| Pulse overload | (1%+0.05) Max. | 4.28 Resistance change after 10,000 cycles (1 second ON , 25 seconds OFF ) at 4 times RCWV. |
| Resistance to soldering heat | (1%+0.05) Max. | 4.18 Permanent resistance change when leads immersed to a point 2.0-2.5mm from the body in 2605 solder for 101 seconds. |
| Resistance to solvent | No deterioration of protective coatings & markings | 4.29 Specimens shall be immersed in a bath of trichloroethylene completely for 3 min. With ultrasonic |
| Terminal strength | No evidence of mechanical damage | 4.16 Direct load: Resistance to a 2.5 kg direct load for 10 seconds in the direction of the longitudinal axis of the terminal leads. Twist test: Terminal leads shall be bent through 90at a point of about 6mm from the body of the resistor and shall be rotated through 360 about the original axis of the bent terminal in alternating direction for a total of 3 rotations. |
| Solderability | 95% coverage Min. | 4.17 The area covered with a new, smooth, clean, shiny and continuous surface free from concentrated pinholes. Test temp. Of solder:2453 Dwell time in solder: 2~3seconds. |
| Temperature cycling | (1%+0.05) Max. | 4.19 Resistance change after continuous five cycles for duty cycle specified: Step Temperature Time 1 -55 3 30min 2 Room temp. 10 15min 3 +155 2 30min 4 Room temp. 10 15min |
| Load life in humidity | Normal type: 1.5%; flame retardant type: 5% | 7.9 resistance change after 1,000 hours (1.5 hours ON,0.5 hour OFF) at RCWV in a humidity test chamber controlled at 402 and 90 to 95% relative humidity. |
| Load life | Normal type: 1.5%; flame retardant type: 5% | 4.25.1 permanent resistance change after 1,000 hours operating at RCWV with duty cycle of 1.5 hours ON, 0.5 hour OFF at 702 ambient. |
Structure
- 1 Basic body: Rod type ceramics
- 2 Resistance layer: Metal Film
- 3 End cap: Cold steel plated with copper/tin
- 4 Lead wire: Tin solder coated copper wire
- 5 Joint: By Welding
- 6 Coating:
1. Inner paint: Celluloid resin
2. Outer paint:
2.1 Inflammable resin for normal size and 1/2W small size: Blue
2.2 Non-inflammable resin for other small size: Light Green
2.3 Non-inflammable resin for ultra-small size-0.4WSS: Deep Green - 7 Color bands: Epoxy resin
Marking
Resistors are marked with color bands in accordance with JIS C 0802.
Label
Labels include: Type and style, Nominal resistance, Resistance tolerance, Quantity, Lot. No., TCR: PPM.
Derating Curve
Resistors have a power rating based on continuous load operation at an ambient temperature from -55 to 70. Derating is applied for temperatures above 70 as shown in Figure 1 (not included in this text).
Voltage Rating
Resistors have DC and AC continuous voltage ratings calculated by RCWV = P*R, where RCWV is Rated DC or RMS AC continuous working voltage (Volt.), P is Power Rating (Watt.), and R is Nominal Resistance (Ohm). Overload voltage is defined as 2.5 times RCWV.
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Company
Beijing Silk Road Enterprise Management Services Co., Ltd.
Location
16 Floor, Unit B, Jiatai International Mansion, No 41, Dongsihuan Zhong Road, Chaoyang District, Beijing
Contact Person
Sellina