CEMENT FIXED RESISTORS Self extinguishing Excellent flame and moisture resistance Extremely small sturdy and mechanically safe Non-inductive types available for all Royal Ohm Cement Resistors Too low or too high ohmic values on Wire-wound & Power Film type can be supplied on a case to case basis Ordering Procedure: (Ex.: PRW 5W, 5%, 100 , B/B) P R W 0 5 W J P 1 0 1 B 0 0 Resistor Type: PRW0 = PRW PRWA = PRWA Resistance Value: Wattage: PRWC = PRWC PRM0 = PRM 2W = 2W E-24 series: st PRMA = PRMA PRMB = PRMB 3W = 3W 1 digit denotes type of the PRS0 = PRS PRVA = PRVA product: 4W = 4W PRVB = PRVB PZ1A = PRZA-1 W = Wire - wound type 5W = 5W PZ2A = PRZA-2 PZ3A = PRZA-3 P = Power film type 7W = 7W nd rd PRZC = PRZC PRZD = PRZD 2 & 3 digits are the significant AW = 10W PRT0 = PRT PRU0 = PRU figures of the resistance BW = 11W th 4 digit denotes number of zeros: PDM0 = PDM PRWI = PRWI HW = 17W J- 0.1, K- 0.01, L- 0.001 FW = 15W Ex. 47 ~ W47J 20 = 20W 25 = 25W 30 = 30W 40 = 40W Tolerance: Packing Type: J = 5%, B =Bulk / Box K = 10% Packing Qty: 0 = for Bulk / Box packing * More explanation on part no, please see details on pages 80-81. Special Feature: 0 = Standard product I = Non-Inductive Temperature coefficient < 20 : 400PPM/C 20 : 350PPM/C Short-time overload R/R (5.0% + 0.05), with no evidence of mechanical damage. Dielectric withstanding voltage No evidence of flashover, mechanical damage, arcing or insulation breakdown. Terminal strength No evidence of mechanical damage. Solderability Min. 95% coverage Temperature cycling R/R (2.0% + 0.05), with no evidence of mechanical damage. Humidity (Steady State) R/R (5.0% + 0.05), with no evidence of mechanical damage. Load life in humidity For Wire-wound range, the R/R is 5% For Power film range, <100K , the R/R is 5% For Power film range, 100K , the R/R is 10% Load life For Wire-wound range, the R/R is 5% For Power film range, <100K , the R/R is 5% For Power film range, 100K , the R/R is 10% Resistance to soldering heat R/R (1.0% + 0.05), with no evidence of mechanical damage. *More details, please see pages 78-79. 2007 - 2008 Page 36 CEMENT FIXED RESISTORS Dimension (mm) Resistance Range Part No. Style Power Wire- W 1 D 1 L 1 d 0.05 H 5 Film Wound P R W 0 1 W PRW 1W 6 6 14 0.60 25 1 ~ 27 28 ~ 33K P R W 0 2 W PRW 2W 7 7 18 0.75 28 0.1 ~ 27 28 ~ 33K P R W 0 3 W PRW 3W 8 8 22 0.75 32 0.1 ~ 39 40 ~ 56K (1) PRW Type P R W 0 5 W PRW 5W 10 9 22 0.75 35 0.1 ~ 47 48 ~ 100K P R W 0 7 W PRW 7W 10 9 35 0.75 35 0.1 ~ 680 681 ~ 200K P R W 0 A W PRW 10W 10 9 49 0.75 35 0.1 ~ 910 911 ~ 200K P R W 0 F W PRW 15W 12.5 11.5 49 0.75 35 1 ~ 1K P R W 0 2 0 PRW 20W 14.5 13.5 60 0.75 35 2 ~ 1.2K P R W 0 2 5 PRW 25W 14.5 13.5 64 0.75 35 2 ~ 1.2K (1-1) PRWA Type Dimension (mm) Resistance Range Part No. Style Wire- Power W 1 D 1 d 0.05 H 5 L1 Wound Film PRWA2W PRWA - 2W 7 7 18 0.75 28 0.1 ~ 27 28 ~ 33K PRWA3W PRWA - 3W 8 8 22 0.75 32 0.1 ~ 39 40 ~ 56K PRWA5W PRWA - 5W 10 9 22 0.75 35 0.1 ~ 47 48 ~ 100K PRWA7W PRWA - 7W 10 9 35 0.75 35 0.1 ~ 680 681 ~ 200K PRWAAW PRWA -10W 10 9 49 0.75 35 0.1 ~ 910 911 ~ 200K (1-2) PRWC Type Dimension (mm) Resistance Range Part No. Style Power Wire- W 1 D 1 L 1 d 0.05 H 5 Film Wound PRWC1W PRWC - 1W 5.5 5.5 12 0.60 25 1 ~ 27 28 ~ 33K PRWC2W PRWC - 2W 6 6 18 0.75 28 1 ~ 27 28 ~ 33K PRWC3W PRWC - 3W 6 6 20 0.75 28 1 ~ 27 28 ~ 33K PRWC5W PRWC - 5W 6 6 25 0.75 35 1 ~ 200 201 ~ 100K PRWC7W PRWC - 7W 9 9 25 0.75 35 1 ~ 200 201 ~ 100K Derating Curve Heat Rise Chart 2007 - 2008 Page 37