TOKEN MELF RESISTORS Token Electronics Industry Co., Ltd. Taiwan: No. 137, Sec. 1, Chung Shin Rd., Wu Ku Hsiang, Taipei Hsien, Taiwan, R.O.C TEL: 886-2-2981 0109; FAX: 886-2-2988 7487 China: 12F, Zhongxing Industry Bld., Chuangye Rd., Nanshan District, Shenzhen, Guangdong TEL: 86-755-2605 5363, 2605 5364; FAX: 86-755-2605 5365 http://www.token.com.tw rfq token.com.tw Product Index Information General Information ----------------------------------------------------------------------------- 01 Terminology & Glossary ----------------------------------------------------------------------- 02 MELF RFM Series - Non-Inductive MELF for High Frequency Application ------------ 04 RJM Series - Metal Film MELF for Precision Application --------------------------- 07 RGM Series - Metal Glaze Film MELF for Pulse Load Application --------------- 10 RDM Series - Carbon Film MELF for General Purpose Use ------------------------ 13 RMCA, RMCB Series - Ceramic Composition Resistors ---------------------------- 16 Notice: Specification Changed or Version Updated will be posted at irregular intervals. All Updated and Final Specifications, Please Confirm with TOKEN ELECTRONICS REPRESENITIVES. : rfq token.com.tw : http://www.token.com.tw TOKEN MELF Resistors General Information Melf Resistors General Infornation Token MELF Offers Designer a Greater Choice Token Electronics is now offering the complete range of MELF products, comprising DIN-0411, DIN-0309, DIN-0207, DIN-0204 and DIN-0102. These high stability, close-tolerance MELF resistors have a footprint very close to comparable chip resistors but maintain their tolerance and deliver higher stability over a wider temperature range. Download Entire MELF Resistors Catalogue in PDF file (472KB). Where applications require even tighter tolerance, Token offer Ultra Precision range in the RJM package, with values from 0.1Ω ~ 22MΩ, tolerance from ±5% down to as low as ±0.05% and TC from ±50ppm/°C to ±5ppm/°C. For high pulse load and high-frequency applications, Token Electonics offer specialised MELF resistors. The high pulse load resistors are metal glaze film RGM, available in values from 50KΩ ~ 22MΩ and ±0.5% precision tolerance, for 0.125 W ~ 3W applications. High-frequency RFM resistors are available for RF microwave applications where impedance change due to the parasitic inductance of regular resistors is not acceptable. Chip Resistor Alternatives In very low resistance values, between 0.1Ω and 475Ω, not usually offered by conventional chip resistors, these are available in RJM72P 0102, RJM73P 0204, RJM74P 0207 and standard RJM18M 0411 MELF precision packages. All MELF-type resistors are available on blister tape for automated placement and maintain their high stability, high precision characteristics when exposed to soldering temperatures and operating stresses including moisture, vibration, humidity and temperature variation within the specified range. This makes them suitable for a wide range of applications, from laboratory and prototyping work to installation in hostile environments such as airframe or under-bonnet areas, exposed parts of vehicles, or other places where electronic sensing and controls must be installed. Version 2010 http://www.token.com.tw/ rfq token.com.tw 01 of 19 TOKEN MELF Resistors Terminology Glossary Melf Resistors Terminology Glossary Derating Curve The curve that expresses the relation between the ambient temperature and the maximum value of continuously loadable power at its temperature, which is generally expressed as a percentage. Dielectric Withstanding Voltage The rated voltage that can be applied to a designated point between the resistive element and the outer coating, or the resistive element and the mounting surface, without causing dielectric breakdown. Maximum Overload Voltage The maximum value of voltage capable of being applied to resistors for a short period of time in the overload test. Typically the applied voltage in the short time overload test is 2.5 times larger than the rated voltage. However, it should not exceed the maximum overload voltage. Maximum Working Voltage The maximum value of DC voltage or AC voltage (rms) capable of being applied continuously to resistors or element. However, the maximum value of the applicable voltage is the rated voltage at the critical resistance value or lower. Power Rating Power ratings are based on physical size, allowable change in resistance over life, thermal conductivity of materials, insulating and resistive materials, and ambient operating conditions. For best results, employ the largest physical size resistors at less than their maximum rated temperature and power. Rated Ambient Temperature The maximum ambient temperature at which resistors are capable of being used continuously with the prescribed rated power. The rated ambient temperature refers to the temperature around the resistors inside the equipment, not to the air temperature outside the equipment. 02 of 18 http://www.token.com.tw/ rfq token.com.tw Version 2010 TOKEN MELF Resistors Terminology Glossary Rated Power The maximum amount of power that can be continuously loaded to a resistor at a rated ambient temperature. Network and array products have both rated power per package as well as per element. Rated Voltage The maximum value of DC voltage or AC voltage (rms) capable of being applied continuously to resistors at the rated ambient temperature. Resistor Tolerance Resistor tolerance is expressed as the deviation from nominal value in percent and is measured at 25 °C only with no appreciable power applied. A resistor’s value will also change with applied voltage (VCR) and temperature (TCR). For networks, absolute resistor tolerance refers to the overall tolerance of the network. Ratio tolerance refers to the relationship of each resistor to the others in the package. Temperature Coefficient of Resistance (TCR) TCR is expressed as the change in resistance in ppm (0.0001 %) with each degree Celsius of change in temperature. TCR is typically referenced at +25 °C and changes as the temperature increases (or decreases). A resistor with a TCR of 100 ppm/°C will change 0.1 % over a 10 °C change and 1 % over a 100 °C change. In the context of a resistor network, the TCR value is called the absoluSte TCR in that it defines the TCR of a specific resistor element. The term TCR tracking refers to the difference in TCR between each specific resistor in a network. Rated Voltage Melf is the abbreviation of “Metal Electrode Leadless Face” and is a cylindrically shaped resistor designed for surface mounting.Acronym: Leadless Resistor; Cylindrical Resistor; Metal Electrode Leadless Face device; Surface Mounted Leadless Component Version 2010 http://www.token.com.tw/ rfq token.com.tw 03 of 18 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 70°C 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: 25Ω to 200Ω. - 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. 04 of 18 http://www.token.com.tw/ - HF and pulse loading applications. - Testing & Measurement Equipment. - Consumer Product, Printer Equipment. rfq token.com.tw Version 2010 TOKEN RFM High Frequency MELF Resistors Dimensions & Recommended Soldering Bath Dimensions L D W S D1 L1 Type Metric sizes Dimension (mm) Soldering bath (recommended) (mm) L±0.2 L1±0.2 D±0.2 K±0.1 D1±0.1 S W H 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 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, ΔR/R max., after 1000h Derating Insulation voltage Insulation resistance Version 2010 RFM72 DIN: 0102 RFM73 RFM74 RFM75 DIN: 0204 DIN: 0207 DIN: 0207 25Ω ~ 200Ω -55°C ~ 125°C D(±0.5); F(±1.0); J(±5.0) C1(±100); C2(±50); C3(±25); C5(±15); C6(±10) 0.125 0.25 0.5 0.75 standard standard standard power 55/125/56 55/125/56 55/155/56 55/155/56 ≤0.5% for Tol.=±1% & ≤1% for Tol.=±5% standard type linear from 70°C to 125°C 500V >1GΩ http://www.token.com.tw/ rfq token.com.tw 05 of 18 TOKEN RFM High Frequency MELF Resistors How to Order RFM73 100R F C3 TR Product type: RFM72, RFM73,RFM74, RFM75 Resistance Value (Ω): Code 100R Resistance Value 100Ω Resistance Tolerance (%) Code D F J Resistance Tolerance (%) ±0.5 ±1.0 ±5.0 Temperature coefficient (PPM/°C) Code C1 C2 C3 C5 C6 Temperature coefficient (PPM/°C) ±100 ppm/°C ±50 ppm/°C ±25 ppm/°C ±15 ppm/°C ±10 ppm/°C Packaging Codes TR P Packaging Taping Reel Bulk Back to 1st Page - High Frequency Non-Inductance MELF(RFM) 06 of 18 http://www.token.com.tw/ rfq token.com.tw Version 2010 TOKEN RJM Metal Film Precision Melf Resistors Metal Film Precision Melf Resistors Metal-Film (MELF RJM) Resistors Offer More Design Options Preview RJM professional thin film MELF resistors (Cylindrical Resistors) are the perfect choice for most fields of modern professional electronics where reliability and stability is of major concern. RJM resistors combine the proven reliability of professional MELF products with a most advanced level of precision and stability first achieved with axial thin film high precision resistors. This unique combination makes the product perfectly suited for all applications with outstanding requirements towards reliable precision and stability. The typical applications in the fields of telecommunication, automotive and medical equipment reflect the outstanding level of proven reliability. RJM MELF equate Vishay, Ohmite, Caddock, IRC, EBG, KAO, Panasonic Precision Devices with more competitive price and fast delivery. Contact us with your specific needs. Applications : - Telecom. - Medical electronics. - Test and measurement. - Space and aircraft electronics. - Industrial process control systems. - Measuring and calibration equipment. Features - DIN: 0102, 0204, 0207, 0411. - Pure Sn termination on Ni barrier layer. - Very high ratio of performance to price. - High precision tolerance down to ± 0.05 %. - Force fitted steel caps, tin plated on nickel barrier. - Superior overall stability, most advanced thin film technology. - TCR down to ± 5ppm/°C, wide resistance range: 0.1Ω to 22MΩ. - ompatible with lead (Pb)-free and lead containing soldering Version 2010 http://www.token.com.tw/ rfq token.com.tw 07 of 18 TOKEN RJM Metal Film Precision Melf Resistors Dimensions & Recommended Soldering Bath Dimensions L D D1 H K L1 Type RJM72P Metric type Dimension (mm) Soldering bath (recommended) (mm) S W RJM73S RJM73P RJM74S RJM74P RJM16M RJM17M DIN: 0207 RJM18M DIN: 0102 DIN: 0204 L(±0.3) 2.2 3.5 5.7 6.0 8.7 DIN: 0411 11.8 L1(±0.3) 1.0 1.6 2.9 3.3 4.9 8.1 D(±0.3) 1.3 1.3 2.1 2.1 3.1 3.6 K(±0.2) 0.4 0.8 1.3 1.3 1.8 1.8 D1(±0.1) D+0/D-0.15 D+0/D-0.25 D+0/D-0.5 D+0/D-0.5 D+0/D-0.5 D+0/D-0.5 S 1.0 1.6 2.6 2.8 5.6 8.2 W 2.0 2.5 2.5 2.8 3.2 4.0 H 2.0 2.5 2.5 2.8 3.8 4.5 Characteristics Type Metric type RJM72P DIN: 0102 Rated dissipation P70 0.125W Resistance range (Ω) 10 ~ 1M Resistance tolerance (%) RJM73S RJM73P 0.125W 0.25W 0.25W 0.1 ~ 10M RJM16M RJM17M 0.50W RJM18M DIN: 0411 1.0W 2.0W 0.1 ~ 22M 3.0W 0.1 ~ 22M C1 ( ±100 ); C2 ( ±50 ); C3 ( ±25 ); C5( ±15 ); C6 ( ±10 ); C7 ( ±5 ) Climatic category(LCT/UCT/days) 55 / 125 / 56 200V 200V 250V Temperature range Insulation voltage (V) RJM74P DIN: 0207 J ( ±5 ); F ( ±1 ); D ( ±0.5 ); C ( ±0.25 ); B ( ±0.10 ); A5 ( ±0.05 ) Temperature coefficient(ppm/°C) Operating voltage Umax RJM74S DIN: 0204 250V 300V 350V 400V 450V 700 800 900 -55°C to 125°C 300 300 300 Insulation resistance 300 600 >1GΩ Notice: Resistance out of range, tolerance and temperature coefficient match are under request. RJM72 is still in trial production. 08 of 18 http://www.token.com.tw/ rfq token.com.tw Version 2010 TOKEN RJM Metal Film Precision Melf Resistors How to Order RJM74P 10R D C6 P Product type: RJM72P, RJM73S, RJM73P, RJM74S, RJM74P, RJM16M, RJM17M, RJM18M Resistance Value : Code Resistance Value 0R1 10R 100R 1K 10K 100K 1M 10M 0.1Ω 10Ω 100Ω 1KΩ 10KΩ 100KΩ 1MΩ 10MΩ Resistance Tolerance (%) Code J Resistance Tolerance ±5% ±1% ±0.5% ±0.25% ±0.10% ±0.05% F D C B A5 Temperature coefficient (ppm/°C) Code C1 C2 C3 C5 C6 C7 Temperature coefficient ±100 ppm/°C ±50 ppm/°C ±25 ppm/°C ±15 ppm/°C ±10 ppm/°C ±5 ppm/°C Packaging Code TR P Packaging Taping Reel Bulk Back to 1st Page - Metal Film Precision Melf Resistors(RJM) Version 2010 http://www.token.com.tw/ rfq token.com.tw 09 of 18 TOKEN RGM Pulse Load MELF Resistors Metal Glaze Film Pulse Load Melf Resistors Pulse Load MELF (RGM) Provides Maximum Thermal Compliance Preview Providing design engineers with a family of resistors designed specifically for surge and pulse applications, Token Electronics’ family of power MELF resistors feature extended performance capability with ratings up to 3W. Consisting of the RGM16M, RGM17M, RGM18M, and RGM74 Series resistors, the devices in the power MELF family all use Token’s Metal Glaze resistive element on ceramic substrates. The RGM Anti-Surge Melf Series feature metal caps fitted on the terminals of the cylindrical resistor body to givethe devices exceptional thermal compliance. The resistors in the power MELF family provide excellent thermal compliance as well as a variety of surge capabilities. The rugged RGM18M Series resistors are rated up to 3W and provide maximum thermal compliance, while the RGM74 Series resistors offer as much as three times the surge rating of standard resistors, which equates to up to 10 times the surge rating of similar-sized flat thick film chip resistors. The range of capabilities allows customers to select the best device to provide stable performance in harsh environment applications. The Metal Glaze thick film element on the RGM Series devices is fired at 1000°C to a solid ceramic substrate. The resistors feature power ratings of 0.5W, 1W, 2W and 3W at 70°C. Resistance values range from 10kΩ ~ 1GΩ with standard tolerance to ±0.5%, maximum voltage of up to 6000V and TCRs ±100ppm/°C. Maximum operating temperature for the resistors is +125°C. The RGM MELF Series is a perfect fit when an anti-surge resistor is required. Other major applications of RGM resistors are: AC mains protection, isolation between primary/secondary circuits in TVs, voltage dividers, ignition/switching circuit in electronic ballasts. Token will also produce MELF devices outside these specifications to meet customer requirements. Contact us with your specific needs. Applications : Applications : - Lead (Pb)-free and RoHS compliant. - Speciality metal glaze film technology. - Power dissipation rating at 70°C up to 3W. - Combine high resistance range with high voltage. - Temperature coefficient: ±100ppm/°C, ±200ppm/°C. - High pulse handling capability. DIN: 0207,0309, 0411 - Tolerance range: ±0.5% to ±10%; Resistance range: 10KΩ ~ 1GΩ. - Electronic Ballast: Ignition, Switching Spark Circuit. - Home Appliances: Control Module for Surge Protection. - Test & Measurement: Voltage Divider and Surge Protection. - CTV, CRT Monitor: Isolation Resistor, Mains Protection, Discharge Path Resistor and Power Factor Control (PFC). Power Supply (SMPS): Voltage Divider, Isolation, PFC control, Mains Protection and Discharge Path Resistor. 10 of 18 http://www.token.com.tw/ rfq token.com.tw Version 2010 TOKEN RGM Pulse Load MELF Resistors Dimensions & Recommended Soldering Bath Dimensions L D S W D1 H L1 Type DIN - 44061 type Dimension Max. (mm) (±0.3 mm) K RGM74 RGM16M RGM17M RGM18M DIN:0207 DIN:0207 DIN:0309 DIN:0411 L 5.7 6.1 8.7 11 L1 3.5 3.9 6.2 8.8 D 2.1 2.1 3.1 3.9 K 0.6 0.8 1.0 1.3 D1 D+0/D-0.5 D+0/D-0.5 D+0/D-0.5 D+0/D-0.5 S 3.3 3.5 5.6 7.2 W 3.2 4.0 5.0 7.0 H 3.2 4.5 5.0 5.0 RGM74 RGM16M RGM17M RGM18M DIN - 44061 type DIN: 0207 DIN: 0207 DIN: 0309 DIN: 0411 Resistance range (Ω) 10k ~ 1G 10k ~ 1G 10k ~ 1G 10k ~ 1G Recommended Soldering Bath Dimension (Unit: mm) Characteristics Type Resistance Tolerance D (±0.5%); F (±1%); J (±5.0%); K (±10%) Temperature coefficient ± 100 ppm/°C; ± 200 ppm/°C Rated dissipation (W) P70 0.50 1.0 2.0 3.0 Operating voltage (V) Umax 1600 1600 2000 3000 Short time over load voltage (V) 3200 3200 4000 6000 10k Ω ~ 1M Ω 10k Ω ~ 1M Ω 10k Ω ~ 1M Ω 10k Ω ~ 1M Ω Operating Temperature range Endurance, Max, resistance change at P70 ΔR/R max., after 1000h -55°C ~ 125°C ≤1.50% Insulation voltage >500V Insulation resistance >1GΩ Version 2010 http://www.token.com.tw/ rfq token.com.tw 11 of 18 TOKEN RGM Pulse Load MELF Resistors How to Order RGM16M 510K J TR Product type: RGM74, RGM16M, RGM17M, RGM18M Resistance Value: Code Resistance Value 51K 510K 5M1 51M 510M 51KΩ 510KΩ 5.1MΩ 51MΩ 510MΩ Resistance Tolerance (%) Code D F J K Resistance Tolerance ±0.5% ±1% ±5.0% ±10% Packaging Code TR P Packaging Taping Reel Bulk Back to 1st Page - Metal Glaze Film Pulse Load Melf (RGM) 12 of 18 http://www.token.com.tw/ rfq token.com.tw Version 2010 TOKEN RDM Carbon Film Melf Resistors Carbon Film Melf Resistors Token Carbon Film MELF (RDM) is The Cost-Effective Option Preview Commercial grade low power carbon film resistors offer high quality performance for applications that do not require surge protection or precision tolerances. Providing design engineers with an economical power resistor with high quality performance, Token Electronics now offers commercial grade low power carbon film resistors. Designated the RDM Series, the conformally coated resistors offer high quality performance for applications that do not require surge protection or precision tolerances. The commercial grade carbon melf resistors are available in flame retardant packaging and have ideal specifications for consumer electronic or electrical devices. The RDM Series resistors offer a wide resistance range for devices with power ratings below 1W, delivering high quality performance for general purpose applications. The RDM Series resistors are ideal for general use applications including electrical equipment, small appliances and consumer electronics, such as televisions and other high-volume products. The RDM Series film resistors feature power ratings from 0.125 to 1W, with a resistance range from 1 Ω to 1M Ω. Standard tolerances for the devices are to ±2% and ±5% with TCRs as low as ±300ppm/°C for values of 1K Ω or less. Maximum working voltage ranges from 200V to 350V. Contact our sales representative with your specific needs. Applications : - Speciality carbon film technology. DIN: 0204, 0207, 0309. - Coating color: Yellow; Marking: Color code (3 color band). - Free direction for mounting due to cylindrical design. Electrodes strength is higher than flat chip resistors. - Specially plated electrodes for high solderability. Lower current noise than flat chip resistors. Lead (Pb)-free and RoHS compliant. Applications : - Home appliances, Electrical Equipment, Consumer electronics. Version 2010 http://www.token.com.tw/ rfq token.com.tw 13 of 18 TOKEN RDM Carbon Film Melf Resistors Dimensions & Recommended Soldering Bath Dimensions D3 C D1 L D2 Type RDM73S RDM73P RDM74S RDM74P RDM16M RDM17S RDM17P DIN-44061 type 0204 L 3.5±0.2 C (Min.) 0.5 D1 1.40±0.15 D2 (Max.) 1.55 D3 (Max.) 1.25 0204 3.5±0.2 0.5 1.40±0.15 1.55 1.25 0207 5.9±0.2 0.5 2.2±0.1 2.4 2.1 0207 5.9±0.2 0.5 2.2±0.1 2.4 2.1 0207 5.9±0.2 0.5 2.2±0.1 2.4 2.1 0309 8.5±0.2 0.5 3.2±0.2 3.4 3.0 0309 8.5±0.2 0.5 3.2±0.2 3.4 3.0 RDM73S 0204 1/8 RDM73P 0204 1/4 RDM74S 0207 1/4 RDM17S 0309 1/2 RDM17P 0309 1 200 400 180K 3K 250 500 180K 3K 350 700 50K 2.5K 350 700 50K 2.5K Dimensions (mm) Characteristics Type DIN-44061 type Power Rating (W) Resistance Range (Ω) E24 Resistance Tolerance Max. Working Voltage (V) Max. Overload Voltage (V) Case Packaging & Qty (pcs) Reel RDM74P RDM16M 0207 0207 1/2 1 1 ~ 1M G: ±2% J: ±5% 300 300 350 600 600 700 96K 96K 96K 2K 2K 2K Item Temp. Coefficient (PPM/°C) Short Time Overload Intermittent Resistance to Soldering Solderability Moisture Resistance Load Life 14 of 18 Characteristics Type TCR >1/4W 1/8W 0 ~ -350 <10K <1K 0 ~ -600 Test Method 0 ~ -1000 11K~115K 160K~2M2 1K1~47K 51K~470K ± (1.0% + 0.05Ω) ± (1.0% + 0.05Ω) ± (1.0% + 0.05Ω) 95% Coverage min ± (5.0% + 0.1Ω) ± (3.0% + 0.1Ω) http://www.token.com.tw/ 0 ~ -1500 510K~1M rfq token.com.tw JIS-C(5202-5.2) JIS-C(5202-5.5) JIS-C(5202-5.8) JIS-C(5202-6.4) JIS-C(5202-6.5) JIS-C(5202-7.9) JIS-C(5202-7.10) Version 2010 TOKEN RDM Carbon Film Melf Resistors How to Order RDM74P 1R J TR Product type: RDM73S, RDM73P, RDM74S, RDM74P, RDM16M, RDM17S, RDM17P Resistance Value: Code Resistance Value 1R2 12R 120R 12K 1.2Ω 12Ω 120Ω 12KΩ Resistance Tolerance (%) Code G J Resistance Tolerance ±2% ±5% Packaging Code T P Packaging Taping Reel Bulk Back to 1st Page - Carbon Film Melf Resistors(RDM) Version 2010 http://www.token.com.tw/ rfq token.com.tw 15 of 18 TOKEN RMCA, RMCB Ceramic High Voltage High Voltage Ceramic Resistors Enhanced Performance for High Voltage Applications - Ignition Non-Inductive (RMCA, RMCB) Preview The RMCA, RMCB Series MELF type of fixed ceramic resistors from Token Electronics offers automotive designers a compact solution for applications involving high voltages, surges, high peak power, or high-energy pulses. They offer enhanced performance in R-C snubber circuits, high voltage power supplies, and inrush limiters. Token’s RMCA, RMCB series now offers the industry a direct replacement carbon composition resistor based on a bulk resistive element comprising carbon in a ceramic filler. Due to the need for higher peak voltages, the RMCA, RMCB range is perfect for vehicle ignition system applications. The RMCA, RMCB Series conform to RoHS compliant and lead free. For customed designs, tighter tolerances, non-standard technical requirements, or custom special applications, please contact our sales for more information. Ceramic Composition Resistor Construction : Bulk ceramic resistors that consists of a clay, alumina, and ceramic filler that has been blended and pressurized into a resistive core and then covered with a molded outer insulating core. Replacement Carbon-Composition Resistors : Design requirements for custom sizes, surface mount, or special footprints can be met easily. In cases where several carbon-composition resistors have been used together in an array to achieve a particular rating, they have been replaced with a single bulk ceramic resistor, frequently at a lower installed cost. Features Applications - Operating Temperature -40°C ~ 155°C. - Resistance Tolerance K(±10%), M(±20%). - Typical resistance range 470 ohm ~ 100 Kohm. - Replaces 1 and 2 watt carbon composition resistors. - Suitable for noise suppressor of engine ignition system. - High peak power, Reliable with non-disconnection failure. - Rated Wattage up 5W, meets high energy density demands. 16 of 18 http://www.token.com.tw/ - Inrush limiters - R-C snubber circuits - Vehicle ignition system - High voltage power supplies rfq token.com.tw Version 2010 TOKEN RMCA, RMCB Ceramic High Voltage General Specifications (Unit: mm) RMC-A Style RMC-B Style Silver Layer L Model D Style RMC RMC Dimensions (mm) Rated Wattage L 7 ± 1.5 9 ± 1.5 10 ± 1.5 11 ± 1.5 18 ± 1.5 19 ± 1.5 24 ± 2.0 25 ± 2.0 24 ± 2.0 25 ± 2.0 1 B A B A B A B RMC D L A RMC Cap 2 3 5 D 4.0 ± 0.4 4.0 ± 0.4 4.0 ± 0.4 4.6 ± 0.5 4.0 ± 0.4 4.6 ± 0.5 4.0 ± 0.4 4.6 ± 0.5 7.0 ± 0.5 7.6 ± 0.5 Electrical Characterisics Item Power Rating at 25°C (W) Operating Temp. Range (°C) RMCA, RMCB 1 Resistance Tolerance Resistance Range (Ω) Max. Working Voltage (V) 25°C~ 40°C T.C.R (PPM/°C) 25°C~155°C Max. Pulse Voltage (KV) Moisture Resistance (%) 470 ~ 33K 300 -750 ~ 3300 -750 ~ 2600 8 10 2 3 -40 ~ 155 K(±10%), M(±20%) 1K ~ 56K 1K ~ 100K 350 400 -750 ~ 3300 -750 ~ 3300 -750 ~ 2600 -750 ~ 2600 15 20 10 10 5 470 ~ 33K 500 -750 ~ 3300 -750 ~ 2600 25 10 Note: Non-Inductive Performance: 1. Chemically inert and thermally stable, the resistors are inherently non-inductive because of their bulk ceramic construction, which allows energy and power to be uniformly distributed through the entire ceramic resistor body with no film or wire to fail. 2. The bulk ceramic material also allows simple efficient resistor designs that enable the designer to minimize the resistor package size while providing the required performance and reliability. Version 2010 http://www.token.com.tw/ rfq token.com.tw 17 of 18 TOKEN RMCA, RMCB Ceramic High Voltage How to Order RMC 2W a 510R M Part Number: RMC Rated Power (W): 1W, 2W, 3W, 5W Style: a Style, b Style Resistance Value (Ω) Code 510R 5K1 51K 68K Resistance Value (Ω) 510Ω 5.1KΩ 51KΩ 68KΩ Resistance Tolerance Code K M Resistance Tolerance ±10% ±20% Back to 1st Page -Ceramic Resistors (RMCA, RMCB) Version 2010 http://www.token.com.tw/ rfq token.com.tw 18 of 18