Resistors Tubular Vitreous Enamelled Welwyn Components TWubular Vitrirewoundeous Enamelled Resistors Wirewound Resistors 1600/1900 Series Impervious lead free vitreous enamel coating 1600/1900 Series Can be supplied with fixed, adjustable, Impervious lead free vitreous enamel coating tapped or low inductance winding Can be supplied with fixed, adjustable, tapped or Seven termination styles with choice of low inductance winding mounting arrangements Seven termination styles with choice of mounting arrangements Manufactured RoHS compliant Manufactured RoHS compliant Pb-free terminations Pb-free terminations* * Check status of stock when ordering 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) General Information Vitreous enamelled wirewound resistors are capable of chromium resistance wires and specially formulated enamel to withstanding a higher dissipation size for size, than any other ensure that the resistors can withstand repeated heat cycling protected type this is attributable to the higher operating without damage. temperature which the wire and enamel can withstand. Connections between the resistance element and end Vitreous enamel provides exceptionally good protection to the terminations are welded other connections are brazed. wire element and is essentially impervious to moisture. The Mounting devices are available which permit resistors to be resistors can safely be used in harsh environmental conditions. mounted by both ends or by one end. Single ended mounting The Welwyn range is based on thirteen sizes of tube, each of is recommended for applications which do not subject the which has a recommended maximum dissipation which limits resistor to shock or vibration. operating surface temperature to a maximum of 375C. Ferrules and the F type mounting plug are anchored into the The stability and high reliability of Welwyn tubular vitreous tubes with high temperature adhesive. resistors is a direct result of the best quality materials being Special requirements, for types or styles not described used in their construction. in this brochure, will be considered for economic High purity ceramic tubes have been matched with nickel quantities. Electrical Data 1601 1905 1600 1602 1906 1603 1604 Pow ing 70C watts 11 61 61 .5 71 22 52 53 eR sist na c e r na eg o mh s Tabl e 1 Limitin g elem ne t volt ov lts Tabl e 1 TC R (- t o + C) p mp /C Typically: <+75 aM xi + 200 eR sist na c e toler na ce % 1, , , 0 See table for value restrictions Values E24 preferred rma l im ce C/ aw tt fig. 1 Op in g et mp ure ar nge C - t o + 1605 1908 1607 1606 1608 1609 Pow ing 70C watts 74 45 67 19 eR sist na c e r na eg o mh s Tabl e 1 Limitin g elem ne t volt ov lts Tabl e 1 TC R (- t o + C) p mp /C Typic la l <+75 aM xi + 150 eR sist na c e toler na ce % 1 0 Se e tabl e 1 valu e r se trictions Values E24 preferred rma l im ce C/ aw tt fig. 1 Op in g et mp ure ar nge C - t o + Note See Figure 1 for curves of temperature rise / watts dissipation. General Note General Note BI Technologies IRC Welwyn Welwyn Components reserves the right to make changes in product specification without notice or liability. TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to Welwyns own data, relates to current manufacture and is considered accurate at time of going to print. A subsidiary of All information is subject to TT Electronics own data and is considered accurate at time of going to print. TT electronics plc www.ttelectronics.com/resistors Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info welwyn-tt.com Website: www.welwyn-tt.com 09.09 TT Electronics plc 01.21 121 573 55 tare tare eeS nadep ehT rof 1 , 5 , 2 , mum :y 002 55 eeS ega eeS 561 511 ta tar re 573 55 tare tare eeS nadep ehT 1 1 5 2 mum 002 55 eeS ega eeS ta tar reTubular Vitreous Enamelled Tubular Vitreous Enamelled TTuubular Vitrbular Vitreous Enamelled Wireous Enamelled ewound Resistors Wirewound Resistors Wirewound Resistors Welwyn Components Wirewound Resistors 1600/1900 Series Welwyn Components 1600/1900 Series Welwyn Components 1600/1900 Series 1600/1900 Series Electrical Data (continued) Electrical Data (continued) Electrical Data (continued) Table 1 Table 1 Table 1 *Dissipation (watts) to Resistance range (ohms) Limiting Low inductance *Dissipation (watts) to Resistance range (ohms) Limiting Low inductance produce operating element winding resistance *Dissipation (watts) to Resistance range (ohms) Limiting Low inductance produce operating element winding resistance hotspot temperature (C) of: voltage range (ohms) produce operating element winding resistance hotspot temperature (C) of: voltage range (ohms) Ambient = 20C Ambient Minimum Termination Min. res. at hotspot temperature (C) of: voltage range (ohms) Ambient = 20C Ambient Minimum Termination Min. res. at = 70C resistance at style Ambient = 20C Ambient Minimum Termination Min. res. at = 70C resistance at style Max. at Max. at = 70C resistance at style Max. at Max. at Type any either Max. at Max. at Type any either 200 300 375 375 5% 2% 1% tolerance C All others 10% 5% tolerance Type any either 200 300 375 375 5% 2% 1% tolerance C All others 10% 5% tolerance 1601 5200 10300 14375 11375 5%1 152% 251% tolerance15k 250C All others150 10%10 505% tolerance1.3k 1601 5 10 14 11 1 15 25 15k 250 150 10 50 1.3k 19051601 75 14.510 2014 1611 11 1515 3025 30k15k 250- 450150 1010 5050 3.5k1.3k 1905 7 14.5 20 16 1 15 30 30k - 450 10 50 3.5k 1905 7 14.5 20 16 1 15 30 30k - 450 10 50 3.5k 1600 7.5 15 21 16.5 1 15 30 56k - 600 10 50 5.0k 1600 7.5 15 21 16.5 1 15 30 56k - 600 10 50 5.0k 1600 7.5 15 21 16.5 1 15 30 56k - 600 10 50 5.0k 1602 8 15.5 22 17 1 20 25 43k 500 350 10 50 4.0k 1602 8 15.5 22 17 1 20 25 43k 500 350 10 50 4.0k 1602 8 15.5 22 17 1 20 25 43k 500 350 10 50 4.0k 1906 9.5 19 28 22 1 20 30 50k 700 550 10 50 5.5k 1906 9.5 19 28 22 1 20 30 50k 700 550 10 50 5.5k 1906 9.5 19 28 22 1 20 30 50k 700 550 10 50 5.5k 1603 11 22 32 25 1 20 30 83k 850 750 10 50 7.5k 1603 11 22 32 25 1 20 30 83k 850 750 10 50 7.5k 1603 11 22 32 25 1 20 30 83k 850 750 10 50 7.5k 1604 15.5 31 45 35 1 20 60 100k 1300 1000 15 50 11.5k 1604 15.5 31 45 35 1 20 60 100k 1300 1000 15 50 11.5k 1604 15.5 31 45 35 1 20 60 100k 1300 1000 15 50 11.5k 1605 21 41 59 47 1 30 40 100k 1100 900 15 50 14k 1605 21 41 59 47 1 30 40 100k 1100 900 15 50 14k 1605 21 41 59 47 1 30 40 100k 1100 900 15 50 14k 1908 24 47 68 54 1 30 40 100k 1200 1000 10 50 16k 1908 24 47 68 54 1 30 40 100k 1200 1000 10 50 16k 1908 24 47 68 54 1 30 40 100k 1200 1000 10 50 16k 1607 34 66 95 76 1 30 50 100k 1300 900 15 50 22k 1607 34 66 95 76 1 30 50 100k 1300 900 15 50 22k 1607 34 66 95 76 1 30 50 100k 1300 900 15 50 22k 1606 41 80 115 91 1 30 40 160k 2100 1900 15 50 32k 1606 41 80 115 91 1 30 40 160k 2100 1900 15 50 32k 1606 41 80 115 91 1 30 40 160k 2100 1900 15 50 32k 1608 52 101 145 115 1 30 50 180k 2100 1800 20 50 38k 1608 52 101 145 115 1 30 50 180k 2100 1800 20 50 38k 1608 52 101 145 115 1 30 50 180k 2100 1800 20 50 38k 1609 74 145 208 165 1 35 50 250k 3000 2500 30 100 58k 1609 74 145 208 165 1 35 50 250k 3000 2500 30 100 58k 1609 74 145 208 165 1 35 50 250k 3000 2500 30 100 58k *The stated dissipation applies to resistors mounted horizontally with unobstructed bore. *The stated dissipation applies to resistors mounted horizontally with unobstructed bore. *The stated dissipation applies to resistors mounted horizontally with unobstructed bore. Performance Data Performance Data Performance Data Max Typ Max Typ Max Typ Load : 1000 hours at 70C R% 5.0 3.5 Load : 1000 hours at 70C R% 5.0 3.5 Load : 1000 hours at 70C R% 5.0 3.5 Shelf life : 12 months at room temperature R% 1.0 0.1 Shelf life : 12 months at room temperature R% 1.0 0.1 Shelf life : 12 months at room temperature R% 1.0 0.1 Climatic R% 0.5 0.35 Climatic R% 0.5 0.35 Climatic R% 0.5 0.35 Long term damp heat R% 0.2 0.05 Long term damp heat R% 0.2 0.05 Long term damp heat R% 0.2 0.05 Bump and vibration R% 0.1 0.02 Bump and vibration R% 0.1 0.02 Bump and vibration R% 0.1 0.02 Noise (in a decade of frequency) R% zero zero Noise (in a decade of frequency) R% zero zero Noise (in a decade of frequency) R% zero zero Pulse Handling Data Available by request Pulse Handling Data Available by request Pulse Handling Data Available by request Temperature rise graph figure 1 Power - W General Note BI Technologies IRC Welwyn TT Electronics reserves the right to make changes in product specification without notice or liability. Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK All information is subject to TT Electronics own data and is considered accurate at time of going to print. Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info welwyn-tt.com Website: www.welwyn-tt.com 09.09 Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info welwyn-tt.com Website: www.welwyn-tt.com 09.09 www.ttelectronics.com/resistors Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info welwyn-tt.com Website: www.welwyn-tt.com 09.09 122 TT Electronics plc 122 122 01.21