MFM Metal Film MELF Resistor

Transcription

1 MFM Metal Film MELF Resistor MFM (0102, 0204, 0207, 0309) Metal Film MELF Resistor Standard Type MFM (1/8W, 1/4W. 1/2W) Application - Automotive - Industrial Control System - Telecommunication Equipment - Medical Equipment - Lighting Ballast - Electronic Energy Meter FEATURES - Excellent heat dissipation - Low noise characteristics - Force fitted steel caps, tin plated on nickel barrier - Excellent overall stability, most advanced thin film technology - Cylindrical design, free direction mounting - RoHS compliant CONSTRUCTION 1 Isolation Coating 2 Color Band 3 Cutting Line 4 Ceramic Core 5 Resistive Film 6 Terminal 1/6

2 MFM Metal Film MELF Resistor POWER CHARACTERISTIC Series MFMA-16 MFMB25S MFMC50S MFMD-50 Size Code Rated Dissipation, P W 0.25W 0.5W 0.5W Resistance Range 100Ω ~ 100KΩ 1Ω ~ 4M7Ω 1Ω ~ 4M7Ω 1Ω ~ 4M7Ω Resistance Tolerance ±1%, ±2%, ±5% Significant Figure E-24, and E-96 Series Value T.C.R. ±25 ppm/ C, ±50 ppm/ C, ±100 ppm/ C Operating Temp. Range -55 C ~ +155 C Rating Ambient Temp. 70 C Max. Working Voltage 150V 200V 250V 350V Max. Overload Voltage 300V 400V 500V 700V 2/6

3 CFM Carbon Film MELF Resistor SPECIFICATION Characteristics Specifications Test methods DC resistance (JIS-C ) F (±1%), G (±2%), J (±5%) Resistance value test at room temperature 25 C R2-R1 *10 6 (PPM/ C) R1(T2-T1) Temperature Coefficient (JIS-C ) ±100 ppm/ C ±50 ppm/ C ±25 ppm/ C R1: Resistance value at room temperature (T1) R2: Resistance value at room temperature +100 C (T2) Load life in Humidity (JIS-C ) ±(1%+0.05Ω) with no evidence of mechanical damage. Resistance change after 1000Hrs (1.5Hrs on, 0.5Hrs off) At rated voltage in a humidity chamber controlled at 40+2 C and 90-95% relative humidity. Load Life (JIS-C ) ±(3%+0.05Ω) with no evidence of mechanical damage. Resistance change after 1000Hrs operating at rated voltage with duty cycle of 1.5Hrs on 0.5Hrs off at 70 C±2 C. Resistance to Soldering Heat (JIS-C ) Resistance change rate is ±(0.5%+0.05Ω) Max. with no evidence of mechanical damage. 260 C±5 C, 10±1 Sec. (For Lead-Free Soldering) Short Time Over load (JIS-C ) Solderability (JIS-C ) ±(0.5%+0.05Ω) 95% coverage minimum Resistance change after the application of a potential of 2.5 time rated voltage for 5 seconds. Test temperature of solder: 235±5 C Dwell time in solder: 3±0.5 sec. 3/6

4 MELF Resistor Dimensions Style A (0102) B (0204) C (0207) D (0309) Dimension (mm) L D1 D2 Max. D3 Max. C Min. 2.0± ± ± ± ± ± ± ± /6

5 Recommendation Soldering Condition Storage Condition It s desirable that the resistors are stored in ambient temperature from -5 C to +40 C and relative humidity under 55% ~ 75%. High humidity, dust, harmful gas, e.g. hydrogen chloride and sulfuric gas should be avoided. Shelf-Life after delivery of 1 year is recommended. Application Information The power dissipation on the resistor generates a temperature rise against the local ambient, depending on heat flow support of the PCB (thermal resistance). The rated dissipation applies only if the permitted film temperature is not exceeded. Furthermore, a high level of ambient temperature or of power dissipation may rise the temperature of the solder joint, hence special solder alloys or board materials may required to maintain the reliability of the assembly. The resistors do not feature a limited lifetime when operated within the permissible limits. However, resistance value drift increasing over operating time may result in exceeding a limit acceptable to the specific application, thereby establishing a functional lifetime. The designer may estimate the performance of the particular resistor application or set certain load and temperature limits in order to maintain a desired stability. 5/6

6 Legal Disclaimer Notice Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. Fong Ya Enterprise Co., Ltd. its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, Fong Ya ), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other disclosure relating to any product. Fong Ya makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or the continuing production of any product. To the maximum extent permitted by applicable law, Fong Ya disclaims (i) any and all liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special, consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular purpose, non-infringement and merchantability. Statements regarding the suitability of products for certain types of applications are based on Fong Ya s knowledge of typical requirements that are often placed on Fong Ya products in generic applications. Such statements are not binding statements about the suitability of products for a particular application. It is the customer s responsibility to validate that a particular product with the properties described in the product specification is suitable for use in a particular application. Parameters provided in datasheets and / or specifications may vary in different applications and performance may vary over time. All operating parameters, including typical parameters, must be validated for each customer application by the customer s technical experts. Product specifications do not expand or otherwise modify Fong Ya s terms and conditions of purchase, including but not limited to the warranty expressed therein. Except as expressly indicated in writing, Fong Ya products are not designed for use in medical, life-saving, or life-sustaining applications or for any other application in which the failure of the Fong Ya product could result in personal injury or death. Customers using or selling Fong Ya products not expressly indicated for use in such applications do so at their own risk. Please contact authorized Fong Ya personnel to obtain written terms and conditions regarding products designed for such applications. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Fong Ya. Product names and markings noted herein may be trademarks of their respective owners. 6/6