FRM-50JR-52-22R

NOTICE Ref Nr: LR-20161228 Date: 2016.12.28 TO: All customers FROM: Leaded-R Quality Assurance Dept. HEREWITH YOU ARE INFORMED OF BELOW. DESCRIPTION: 1. 因原材料供貨因素，FRM 系列已不再生產，全面改用特性規格更高階之FKN系列。 FRM series is phased out due to raw material discontinued, alternative one is FKN series with superior characteristics. 2. 生效日期：自2017年7月1日起生效。 Effective date: from Jul.1, 2017. 3. FRM & FKN 比較 Comparison table of FRM and FKN: Series FRM Fusible Metal Film Resistors FKN Fusible Wirewound Resistors Power Range 1/4W~3W 1/4W~7W Function Safety function to protect circuit board Resistance Element Comparison FKN is with wider power range Safety function to protect circuit board Same funtion Metal Film Alloy Wire TCR ±200 ppm /℃ ±300 ppm /℃ (Standard, low T.C.R is on request) Different technics FKN is flexible for customized requirment Resistance Range 1Ω~560Ω 0.1Ω~1KΩ FKN Series is with wider resistance range Fusing Characteristics 1Ω≦R≦2.0Ω Fusing time within 30 seconds at 25 times of rated power R≧2.2Ω Fusing time within 30 seconds at 16 times of rated power Surge Voltage Low High (on request) FKN is capabile to withstand higher surge voltage at the same conditions. Detail as comparison table Load Life Common Excellent FKN performs better in Load Life stability. R≤2.0 Ω Fusing time within 60 seconds FRM cut off with shorter time at the same at 36 times of rated power; R>2.0 Ω Fusing time within 60 seconds at conditions. See attached table 25 times of rated power; Fusing Time and Surge withstanding Voltage difference at the same conditions. Yageo PN Power / Value Fusing Test Method Appraise Fusing Voltage current Fusing time surge Voltage FRM3WSJT-73-1R 3W / 1R 25 times of rated power within 30s 8.66V 8.66A 2.5s~4.7s 400V FKN3WSJT-73-1R 3W / 1R 25 times of rated power within 60s 8.66V 8.66A 21s~24s 1KV FRM3WSJT-73-22R 3W / 22R 25 times of rated power within 30s 40.6V 1.85A 0.7s~1.5s 500V FKN3WSJT-73-22R 3W / 22R 25 times of rated power within 60s 40.6V 1.85A 12s~15s 1.5KV NOTICE SUGGESTION FOR ALTERNATIVE PRODUCTS: Not applicable Quality Manager Signature: Product Manager Nane. Zhou. Date: Sep.22,2016 Dec. 28, 2016 Sales Manager Signature: Flora Shen Signature: Ken Hsu Date: Dec. 28, 2016 Date: Dec. 28, 2016 FOR MORE INFORMATION, CONTACT: Flora Shen e-mail: flora.shen@yageo.com RETURN YOUR COMMENTS BEFORE: Jan.31, 2017 Remarks: Comments Date: Dec. 28, 2016 Function: Marketing Signature: Ken Hsu