Resistors Chip Resistor Arrays Welwyn Components Chip Resistor Arrays WNCR Series WNCR Series Reduced placement cost Compact size Reduced placement cost Compact size Zero ohms also available Zero ohms also available Design flexibility Design flexibility AllAll partsparts araree Pb-Pb-frfreeee andand ccomplyomply withwith EUEU DirDirectivectivee 2011/65/EU2011/65/EU amendedamended bbyy (EU)(EU) 2015/8632015/863 (R(RoHS3)oHS3) Electrical Data WNCR Power rating per resistor at 70C watts 0.063 Resistance range (E24) ohms 10 to 1M TCR -55 to 125C ppm/C 200 Resistance tolerance % 5 Maximum overload voltage volts 100 Maximum working overload volts 50 Ambient temperature range C -55 to +125 Physical Data Dimensions (mm) t P L c d Type L W a bcd p t W WNCR 164 3.20 1.60 0.50 0.5 0.35 0.40 0.8 0.45 c d a b Concave 0.15 0.15 0.15 0.15 0.15 0.10 Terminations p Type L W a bcd p t c d WNCR 168 3.20 1.60 0.60 0.40 0.25 0.30 0.8 0.50 W Convex 0.10 0.10 0.15 0.15 0.15 0.20 0.10 d c a b t Terminations L Solderability Schematic At least 95% of the terminal area shall be covered by 8 5 continuous smooth new solder. Marking Normal resistance value is marked on the top of the resistor with three digits. 14 The first two digits are significant of the nominal value and Construction the third digit is the multiplier. Substrate Alumina Resistor Ruthenium Oxide Terminations Nickel & solder plated GenerGeneral Noteal 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. A subsidiary of All information is subject to Welwyns own data and is considered accurate at time of going to print. 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 TT Electronics plc Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info welwyn-tt.com Website: www.welwyn-tt.com Issue B 03.02 06.18 80Chip Resistor Chip Resistor Arrays Chip Resistor Chip Resistor Welwyn Components ArrayWNCR Series s Arrays Arrays Welwyn Components WNCR Series WNCR Series Welwyn Components WNCR Series Performance Data Performance Data Typical Performance Performance Data Short term overload R% 2.5 Typical Performance Resistance to solder heat R% 2.0 Typical Performance Short term overload R% 2.5 TShortemperatu termr eoverload cycling RR%% 22..50 Resistance to solder heat R% 2.0 Moisture load life: 1000 hrs at 40C R% 3.0 Resistance to solder heat R% 2.0 Temperature cycling R% 2.0 LoadTemperatu life: 1000re cycling hrs at 70C RR%% 32..00 Moisture load life: 1000 hrs at 40C R% 3.0 Low temperature exposure: 1000 hrs at -55C R% 3.0 Moisture load life: 1000 hrs at 40C R% 3.0 Load life: 1000 hrs at 70C R% 3.0 LoadHigh temperatulife: 1000 rhrse exposu at 70Cre: 1000 hrs at 125C RR%% 33..00 Low temperature exposure: 1000 hrs at -55C R% 3.0 Humidity exposure: 1000 hrs at 40C R% 3.0 Low temperature exposure: 1000 hrs at -55C R% 3.0 High temperature exposure: 1000 hrs at 125C R% 3.0 High temperature exposure: 1000 hrs at 125C R% 3.0 Humidity exposure: 1000 hrs at 40C R% 3.0 Humidity exposure: 1000 hrs at 40C R% 3.0 Power Rating For ambient temperature above 70C, the power shall be derated as follows: Power Rating Power Rating For ambient temperature above 70C, the power shall be derated as follows: For ambient temperature above 70C, the power shall be derated as follows: Percent of Rated Wattage Percent of (%) Percent of Rated Wattage Rated Wattage (%) (%) o Ambient Temperature ( C) o 1/16 watt / resistor at 70 C o Ambient Temperature ( C) o Ambient Temperature ( C)o 1/16 watt / resistor at 70 C o 1/16 watt / resistor at 70 C Packaging Ordering Proced ure Taping Characteristics (mm) Packaging Packaging Example: WNCR with concave terminations at Ordering Proced ure Taping Characteristics (mm) Ordering Proced ure Taping Characteristics (mm) 4.7 kilohms and 5% tolerance on a reel of 5000 pieces +0. 1 2. 00.0 5 4. 00. 1 1. 5 Example: WNCR with concave terminations at - 0 Example: WNCR with concave terminations at 4.7 kilohms and 5% tolerance on a reel of 5000 pieces W N C R 1 6 4 4 K 7 J I +0. 1 2. 00.0 5 4. 00. 1 1. 5 - 0 4.7 kilohms and 5% tolerance on a reel of 5000 pieces 1.7 50. 1 +0. 1 2. 00.0 5 4. 00. 1 1. 5 - 0 Type W N C R 1 6 4 4 K 7 J I W N C R 1 6 4 4 K 7 J I 1.7 50. 1 3. 50.0 5 Type 1.7 50. 1 Terminations B Type 164 Concave 2.7 5 3. 50.0 5 Terminations B 168 Convex 3. 50.0 5 Terminations B 164 Concave 2.7 5 A t 4. 00. 1 2. 00.0 5 164 Concave 2.7 5 168 Convex Value (use IEC62 code) 168 Convex A t 4. 00. 1 2. 00.0 5 A t Value (use IEC62 code) 4. 00. 1 2. 00.0 5 Tolerance (use IEC62 code) Value (use IEC62 code) A t B J 5% Tolerance (use IEC62 code) WNCR 2.0 +0.1 0.8 3.75 +0.1 Tolerance (use IEC62 code) A t B J 5% Packing -0.15 0.2 -0.15 A t B J 5% WNCR 2.0 +0.1 0.8 3.75 +0.1 I Tape 5000/reel Standard WNCR 2.0 +0.1 0.8 3.75 +0.1 Packing -0.15 0.2 -0.15 Packaging Packing -0.15 0.2 -0.15 I Tape 5000/reel Standard Resistor arrays are supplied tape and reel. I Tape 5000/reel Standard Packaging Quantity 5,000 pcs per reel. Packaging Resistor arrays are supplied tape and reel. Resistor arrays are supplied tape and reel. Quantity 5,000 pcs per reel. Quantity 5,000 pcs per reel. General Note Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK BI Technologies IRC Welwyn TT Electronics reserves the right to make changes in product specification without notice or liability. Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info welwyn-tt.com Website: www.welwyn-tt.com Issue B 03.02 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 www.ttelectronics.com/resistors 81 Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info welwyn-tt.com Website: www.welwyn-tt.com Issue B 03.02 Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK T TT Electronics plcelephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info welwyn-tt.com Website: www.welwyn-tt.com Issue B 03.02 81 06.18 81 8. 08.0.030. 38. 00. 3