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| TOKEN RFM High Frequency MELF Resistors High Frequency Non-Inductance Melf Resistors Non-Inductance MELF Offer Greater Choice for High Frequency Applications Preview The RFM speciality series of high frequency non-inductance MELF resistor from Token Electronics has been extended to offer more than GHz operation, making the devices more suitable for high frequency RF applications. They are the perfect choice in high frequency circuit designs where the parasitic inductance of regular, helical trimmed resistors can not be accepted, but where also pulse energies apply. Typical applications are in the fields of telecommunication equipment and industrial electronics. These high stability, non-inductance MELF resistors have a footprint very close to comparable chip resistors but maintain their tolerance and deliver higher stability over a wider temperature range. Sizes range from 5.7 x 2.1mm for the RFM74 MELF-0207, through 3.45 x 1.3mm for the RFM73 MELF-0204 down to 2.2 x 1.3mm for the RFM72 MELF-0102. Production is strictly controlled and follows and extensive set of instructions established for reproducibility. The groove on the metal alloy film of high grade ceramic rod is special designed to achieve non inductance. The resistor elements are covered by a protective coating designed for mechanical, electrical and climatic protection. The terminations are covered with a final pure tin plating for keeping perfect solderability. Four or five color code rings designate the resistance value and tolerance in accordance with IEC 60062. Token's RFM MELF standard series can be a replacement for Vishay, IRC, EBG, KAO, Panasonic Precision Devices with more competitive price and short lead time. Contact us with your specific needs. Features - Lead (Pb)-free and RoHS compliant. - Ower dissipation rating at 70C up to 0.75W. - Low-inductance non-helical trimmed product. - Special metal film technology, DIN: 0102, 0204, 0207. - Tolerance range: 0.5% to 5.0%; Resistance range: 25 to 200. - Suitable for more than GHz operation; Excellent overall stability: Class 0.5. Applications : - Medical Equipment. - Industrial electronics. - Automatic Equipment Controller. - Communication Device, Cell phone, GPS, PDA. Version 2010 http://www.token.com.tw/ - HF and pulse loading applications. - Testing & Measurement Equipment. - Consumer Product, Printer Equipment. rfq token.com.tw 01 of 03 TOKEN L D RFM High Frequency MELF Resistors Dimensions & Recommended Soldering Bath Dimensions W S D1 L1 Type Metric sizes L0.2 L10.2 D0.2 K0.1 D10.1 S W H K RFM72 DIN: 0102 2.2 1.2 1.3 0.4 D+0/D-0.15 1.0 2.0 2.0 RFM73 DIN: 0204 3.45 1.6 1.3 0.8 min D+0/D-0.25 1.6 2.0 2.5 H Dimension (mm) Soldering bath (recommended) (mm) RFM74 DIN: 0207 5.7 3.0 2.1 1.2 min D+0/D-0.3 2.6 2.5 2.5 RFM75 DIN: 0207 6.0 3.3 2.1 1.2 min D+0/D-0.3 2.8 2.5 2.5 Characteristics Type Metric sizes Resistance range Operating Temperature range Resistance Tolerance (%) Temperature coefficient (PPM/C) Rated dissipation (W) P70 Operating mode Climatic category (LCT/UCT/days) Endurance, Max, resistance change at P70, R/R max., after 1000h Derating Insulation voltage Insulation resistance RFM72 DIN: 0102 RFM73 RFM74 DIN: 0204 DIN: 0207 25 ~ 200 -55C ~ 125C D(0.5); F(1.0); J(5.0) C2(50); C3(25); C5(15); C6(10) 0.25 0.5 standard standard 55/125/56 55/155/56 0.5% for Tol.=1% & 1% for Tol.=5% standard type linear from 70C to 125C 500V >1G RFM75 DIN: 0207 0.125 standard 55/125/56 0.75 power 55/155/56 02 of 03 http://www.token.com.tw/ rfq token.com.tw Version 2010 TOKEN How to Order RFM High Frequency MELF Resistors RFM73 100R F C3 TR Product type: RFM72, RFM73,RFM74, RFM75 Resistance Value (): Code 100R Resistance Value 100 Resistance Tolerance (%) Code D Resistance Tolerance (%) 0.5 1.0 5.0 F J Code C2 Temperature coefficient (PPM/C) Temperature coefficient (PPM/C) 50 ppm/C 25 ppm/C 15 ppm/C 10 ppm/C C3 C5 C6 Packaging Codes T P Packaging Taping Reel Bulk Back to 1st Page - High Frequency Non-Inductance MELF(RFM) Version 2010 http://www.token.com.tw/ rfq token.com.tw 03 of 03 |
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