Resistors Ultra Low Profile Provisional Ultra Low Profile Steel Heaters Steel Heaters WSHR Series WSHR Series Ultra low profile conduction heater 400C continuous operating temperature Ultra low profile conduction heater Uniform temperature distribution 400C continuous operating temperature Low thermal mass for rapid dynamic response Uniform temperature distribution Ideal for chemical & food process, sealing & printing, Low thermal mass for rapid dynamic response scientific & medical thermal control applications Ideal for chemical & food process, sealing & printing, Single fixing mountable with three termination options scientific & medical thermal control applications RoHS compliant, non-flammable construction Single fixing mountable with three termination options All parts are Pb-free and comply with EU Directive 2011/65/EU amended by (EU) 2015/863 (RoHS3) RoHS compliant, non-flammable construction All All parts parts arare e Pb-Pb-frfree ee and and ccomply omply with with EU EU DirDirectivective e 2011/65/EU 2011/65/EU amended amended bby y (EU) (EU) 2015/863 2015/863 (R(RoHS3)oHS3) Electrical & Thermal Data Electrical & Thermal Data Nominal Approx. Size Rating Rated Voltage Power 10% Power Density 10% Dielectric Voltage Size Code Resistance 10% 2 (mm) Code (Vrms) (W) (W/cm ) (V dc or ac peak) Nominal ( ) Approx. Size Rated Voltage Power 10% Power Density 10% Dielectric Voltage Size Code Rating Code Resistance 10% 2 (mm) (Vrms) (W) (W/cm ) (V dc or ac peak) 47RK 120 306 34.2 47 () 1/2 32 X 28 100RK 120 144 16.1 100 47RK 120 306 34.2 47 1/2 32 X 28 22RK 100RK120 120 655 144 37.1 16.1 22 100 22RK 120 655 37.1 22 47RK 120 306 17.4 47 1 49 x 36 47RK 120 306 17.4 47 100RK 240 576 32.7 100 1 49 x 36 100RK 240 576 32.7 100 150RK 240 384 21.8 150 150RK 240 384 21.8 150 22RK 120 655 26.2 22 22RK 120 655 26.2 22 47RK 120 306 12.3 47 47RK 120 306 12.3 47 2 61 x 41 2 61 x 41 100RK 240 576 23.0 100 100RK 240 576 23.0 100 150RK 240 384 15.4 150 150RK 240 384 15.4 150 22RK 120 655 9.2 22 2500 22RK 120 655 9.2 22 2500 47RK 120 306 4.3 47 47RK 120 306 4.3 47 3 102 x 70 3 102 x 70 100RK 240 576 8.1 100 100RK 240 576 8.1 100 150RK 240 384 5.4 150 150RK 240 384 5.4 150 22RK 120 655 7.7 22 22RK 120 655 7.7 22 47RK 120 306 3.6 47 5 122 x 70 47RK 120 306 3.6 47 100RK 240 576 6.7 100 5 122 x 70 100RK 240 576 6.7 100 150RK 240 384 4.5 150 150RK 47RK240 240 384 1226 4.5 7.9 150 47 7 152 x 102 100RK 240 576 3.7 100 47RK 240 1226 7.9 47 150RK 240 384 2.5 150 7 152 x 102 100RK 240 576 3.7 100 150RK 240 384 2.5 150 The internal thermal impedance between the resistive glaze element and the heatsink-facing surface is <0.15C/W for all sizes. The internal thermal impedance between the resistive glaze element and the heatsink-facing surface is The heat capacities and thermal time constants for each size are as follows: <0.15C/W for all sizes. The heat capacities and thermal time constants for each size are as follows: Size Code Heat Capacity, typical (J/K) Thermal Time Constant, typical, cooling unmounted in still air (s) 2.9 75 Size Code Heat Capacity, typical (J/K) Thermal Time Constant, typical, cooling unmounted in still air (s) 1 5.3 125 2.9 75 2 7.3 175 1 5.3 125 3 22 220 2 7.3 175 5 44 280 3 22 220 7 80 420 5 44 280 7 80 420 General Note BI Technologies IRC Welwyn TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics own data and is considered accurate at time of going to print. www.ttelectronics.com/resistors www.ttelectronics.com/resistors TT Electronics plc Issue A 09 May 18 06.18Provisional Provisional Provisional Ultra Low Profile Steel Heaters Ultra Low Profile Steel Heaters Ultra Low Profile Steel Heaters Provisional WSHR Series Ultra Low Profile Steel Heaters WSHR SeriesW SHR Series Provisional Ultra Low Profile Steel Heaters WSHR Series Ultra Low Profile WSHR Series Steel Heaters WSHR Series Physical Data Physical DPhyatasical D ata Physical Data D imensions in mm, weight without terminations in g Physical Data D imensions in mm, weight without terminations in g Dimensions in mm, weight without terminations in g WSHR1/2 Physical Data WSHR1/2 L 0.1 W 0.1 t 0.1 D nom a nom b nom c nom Wt. nom WSHR1/2 L 0.1 W 0.1 t 0.1 D nom a nom b nom c nom Wt. nom L 0.1 W 0.1 t 0.1 D nom a nom b nom c nom Wt. nom Dimensions in mm, wD imensions in mm, weeighightt without t without terminaerminattions in gions in g Fixing hole is located centrally WSHR1/2 31.9 28.1 2.2 7.5 3.1 4.3 6.5 WSHR1/2 Dimensions in mm, weight without terminations in g WSHR1/2 31.9 28.1 2.2 7.5 3.1 4.3 6.5 WSHR1/2 31.9 28.1 2.2 7.5 3.1 D 4.3 6.5 Wt. L 0.1 W 0.1 t 0.1 D nom a nom b nom c nom Wt. nom except on WSHR1/2 where the L 0.1 W 0.1 t 0.1 a nom b nom c nom WSHR1/2 WSHR1 49.3 35.9 3.2 3.2 nom11.2 6.2 12.6 nom L 0.1 W 0.1 t 0.1 D nom a nom b nom c nom Wt. nom dimension from the edge by the WSHR1 49.3 35.9 3.2 3.2 11.2 6.2 12.6 WSHR1 49.3 35.9 3.2 3.2 11.2 6.2 12.6 WSHR1/2 31.9 0.9 28.1 2.2 7.5 3.1 4.3 6.5 terminations to the mounting 0.9 0.9 WSHR1/2 31.9 28.1 2.2 7.5 3.1 4.3 6.5 WSHR2 61 40.6 4.7 13.0 5.8 17.1 WSHR1/2 31.9 28.1 2.2 7.5 3.1 4.3 6.5 WSHR2 61 40.6 4.7 13.0 5.8 17.1 hole centre is 16.68mm. WSHR2 61 40.6 4.7 13.0 5.8 17.1 WSHR1 49.3 35.9 3.2 3.2 11.2 6.2 12.6 WSHR7 WSHR7 WSHR7 WSHR1 49.3 35.9 0.9 3.2 3.2 11.2 6.2 12.6 WSHR3 101.6 70 13.5 22.0 10.2 50.8 WSHR1 49.3 35.9 3.2 3.2 11.2 6.2 12.6 WSHR3 101.W6S HR37 0 101.6 70 13.5 22.0 13.510.2 22.050.8 10.2 50.8 In addition to the central fixing WSHR2 61 40.6 0.9 4.7 13.0 5.8 17.1 5.3 0.9 5.3 5.3 WSHR2 61 40.6 4.7 13.0 5.8 17.1 WSHR5 122W SHR27 0 61 40.6 14.0 23.8 4.7 7.4 13.0 101.5.82 17.1 hole, WSHR7 has two corner WSHR7 WSHR5 12W2 SHR57 0 122 70 14.0 23.8 14.07.4 23.8101. 2 7.4 101.2 WSHR3 101.61.5 70 13.5 22.0 10.2 50.8 holes. TheseWSHR7 ar e present for 1.5 1.5 WSHR3 101.6 70 13.5 22.0 10.2 50.8 WSHR7 152.W4 SHR3101. 6 101.6 70 15.0 5.3 51.313.5 9.2 22.0 181.10.28 50.8 manufacturing purposes only WSHR7 152.W4S HR7101. 6 152.4 101.6 15.0 51.3 15.09.2 51.3181. 8 9.2 181.8 5.35.3 WSHR5 122 70 14.0 23.8 7.4 101.2 and should not be used as fixing WSHR5WSHR5 122122 7070 14.014.0 23.823.8 7.4 7.4 101.2101.2 1.5 holes. 1.51.5 WSHR7 152.4 101.6 15.0 51.3 9.2 181.8 WSHR7 152.4 101.6 15.0 51.3 9.2 181.8 WSHR7 152.4 101.6 15.0 51.3 9.2 181.8 Construction Construction Construction A high integrity dielectric layer is applied to a A high integrity dielectric layer is applied to a A high integrity diConselectrticr lucayteiron is applied to a Cons truction Construction machined stai nless steel substrate. Thick-film machined smtaianlchiesnes sd steetail snluesbsstr satetee. Tl shiubscktr-fateilm. T hick-film A high integrity dielectric layer is applied to a conductor and element patterns are printed and A high integrity dielectric layer is applied to a conductor a nd element patterns are printed and conductor and element patterns are printed and A high integrity dielectric layer is applied to a machined stainless steel substrate. Thick-film fired, then pmrotacechitedned switaith anles hisg sh tteeeml speubsratutratere . Thick-film fired, then pfirrotedec, thteden p wirth aotec hitedgh t wiemth ape hiratugh tre emperature machined sconductor atainless snd elemteel subent psatttraernste. Thick are pr-film inted and overglaze. Tcheondu tecrmtor ainandtio n elempadsen are t patttiernsnne are prd with inted and overglaze. The termination pads are tinned with overglaze. The termination pads are tinned with conductfired, thor and elemenen protectedt pa wierns arttth a hige prinh temted and firperatured, e f ir ed, then protected with a high temperature Pb-free solder and optional terminals or leads Pb-free soldPber an-freed o solptidoner anal ted ormpitinaonlsa or ll tereamdsina ls or leads overglaze. The termination pads are tinned with then provergotlectazeed with a high t. The terminatiemperon padsatur are e otivnerneglazd we. ith are soldered on. are soldered on. are soldered on. Pb-free solder and optional terminals or leads Pb-free solder and optional terminals or leads The termination pads are tinned with Pb-free solder are soldered on. are soldered on. and optional terminals or leads are soldered on. Terminations Terminations TerminatTionsermi nations The following termination options are available The fTolloerwing tminaerminations tion options are available The followiThe ng terfomlloinwiatingo tner omptiinoatins are on oavptiaiolnabs are le available Terminations The following termination options are available Option Code Nominal Dimensions (mm) The following termination options are available Option Code Nominal Dimensions (mm) Option OptioCnod e Code Nominal DimenNsomionsin (aml Dimm) ensions (mm) Option Code Nominal Dimensions (mm) Option Code PL Nominal Dimensions (mm) PL PL WSHR Size 1, 2, 3, 5 & 7 WSHR Size 1, 2, 3, 5 & 7 WSHR Size 1, 2, 3, 5 & 7 Solder pad only I WSHR Size 1, 2, 3, 5 & 7 PL Solder pad onlyS older pad oIn ly I Solder pad only I PW Pad LengtPh,ad Leng WPLSH Rth, PL Size7. 5 7.5 9.0 1, 29.0, 3, 5 & 7 PL Solder pad only I PW PWPad Length, PLPad Leng7.th,5 PL 7.9.50 9.0 WSHR Size 1, 2, 3, 5 & 7 Pad Width, PW 4.5 9.0 Solder pad only I PW Pad Width,Pad PW Len gth, PL4.5 7.5 9.0 9.0 Pad Width, PW 4.5 9.0 Pad Width, PW 4.5 9.0 Pad Length, PL 7.5 9.0 PW Pad Width, PW 4.5 9.0 Pad Width, PW 4.5 9.0 250mm 250mm 250mm 250mm Flying leads Flying lea ds L Flying leads L Flying lea ds L 250mm UL3134/5 40A, L UL3134/5 Flying leads L UL3134/5 UL3134/5 600V 40A, 600V UL3134/5 Flying leads L 40A, 600V 40A, 600V 40A, 600V UL3134/5 40A, 600V TT TT TT TT WSHR Size 1, 2, 3, 5 & 7 WSHR Size 1, 2, 3, 5 & 7 WSHR Size 1, 2, 3, 5 & 7 WSHR Size 1, 2, 3, 5 & 7 TT WSHR Size 1, 2, 3, 5 & 7 Push-on connectors T TermTinerminal Heighal Height, THt, TH 7.5 7.5 12 12 Push-on Push-on connecPtuorshs- on connecT tors T Terminal HeightT,er THmin al He7.ight5 , TH 12 7.5 12 T Push-on connectors T TerminalW HSHeightR S, THize 7.5 11,2 2, 3, 5 & 7 connectors Terminal Width, TW 2.8 6.3 Terminal Width, TW 2.8 6.3 TH Terminal Width, TW 2.8 6.3 Terminal Width, TW 2.8 6.3 TH Terminal Width, TW 2.8 6.3 Push-on connectors T TH TH Terminal Height, TH 7.5 12 Terminal Thickness, TT 0.8 0.8 Terminal Thickness, TT 0.8 0.8 Terminal ThicknTeerss,min TTal Thic0.k8n ess, TT 0.8 0.8 0.8 Terminal Thickness, TT 0.8 0.8 Terminal Width, TW 2.8 6.3 TH Terminal Thickness, TT 0.8 0.8 www.ttelectronics.com/resistors www.ttelectronics.com/resistors www.ttelectronicws.wcowm.t/rteelesicstrtoornsi cs.com/resistors www.ttelectronics.com/resistors General Note BI Technologies IRC Welwyn TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics own data and is considered accurate at time of going to print. www.ttelectronics.com/resistors TT Electronics plc 06.18