WCB5JB3K60

Stackpole Electronics, Inc. WCB / WCBF / NWCB Series Resistive Product Solutions Welded Ceramic Housed Axial Leaded Wirewound Resistor Features: • • • • • • • • • Welded element on ceramic core Low noise, high reliability compared to fiberglass core wirewounds Fireproof power wirewound High thermal conductivity NWCB – Non-inductively Ayrton Perry winding Body standoffs available; add “F” after WCB 100% RoHS compliant and lead free without exemption Halogen free REACH compliant Electrical Specifications Ohmic Range (Ω) and Tolerance Type/Code Power Rating (W) @ 70ºC WCB5, WCBF5 5 1 - 10K 0.1 - 10K 1 - 15K 0.1 - 15K 1 - 20K 0.1 - 20K WCB7, WCBF7 7 WCB10, WCBF10 10 WCB15, WCBF15 15 WCB20, WCBF20 20 WCB25, WCBF25 25 NWCB5 5 NWCB7 7 NWCB10 10 NWCB15 15 NWCB20 20 NWCB25 25 TCR (ppm/ºC) 0.5% 1% 0.1Ω to 10Ω = ± 50 ppm/ºC > 10Ω = ± 20 ppm/ºC 5% 0.1 - 4.7K 0.1 - 7.5K 0.1 - 10K Max Voltage Rating = √ P*R Mechanical Specifications Type/Code A Body Length B Height C Width D Lead Diameter E (WCBF only) WCB5, WCBF5, NWCB5 0.875 ± 0.039 22.23 ± 0.99 0.375 ± 0.039 9.53 ± 0.99 0.375 ± 0.039 9.53 ± 0.99 0.036 ± 0.002 0.91 ± 0.05 0.410 ± 0.039 10.41 ± 0.99 1.500 ± 0.250 inches 38.10 ± 6.35 mm WCB7, WCBF7, NWCB7 1.400 ± 0.039 35.56 ± 0.99 0.375 ± 0.039 9.53 ± 0.99 0.375 ± 0.039 9.53 ± 0.99 0.036 ± 0.002 0.91 ± 0.05 0.450 ± 0.039 11.43 ± 0.99 1.500 ± 0.250 inches 38.10 ± 6.35 mm WCB10, WCBF10, NWCB10 1.875 ± 0.039 47.63 ± 0.99 0.375 ± 0.039 9.53 ± 0.99 0.375 ± 0.039 9.53 ± 0.99 0.036 ± 0.002 0.91 ± 0.05 0.470 ± 0.039 11.94 ± 0.99 1.500 ± 0.250 inches 38.10 ± 6.35 mm WCB15, WCBF15, NWCB15 1.875 ± 0.039 47.63 ± 0.99 0.500 ± 0.039 12.70 ± 0.99 0.500 ± 0.039 12.70 ± 0.99 0.036 ± 0.002 0.91 ± 0.05 0.610 ± 0.039 15.49 ± 0.99 1.500 ± 0.250 inches 38.10 ± 6.35 mm WCB20, NWCB20 2.500 ± 0.039 63.50 ± 0.99 0.500 ± 0.039 12.70 ± 0.99 0.500 ± 0.039 12.70 ± 0.99 0.036 ± 0.002 0.91 ± 0.05 - 1.500 ± 0.250 inches 38.10 ± 6.35 mm WCBF20 2.355 ± 0.039 59.82 ± 0.99 - 0.570 ± 0.039 14.48 ± 0.99 0.036 ± 0.002 0.91 ± 0.05 0.660 ± 0.039 16.76 ± 0.99 1.500 ± 0.250 inches 38.10 ± 6.35 mm WCB25, NWCB25 2.500 ± 0.039 63.50 ± 0.99 0.500 ± 0.039 12.70 ± 0.99 0.500 ± 0.039 12.70 ± 0.99 0.036 ± 0.002 0.91 ± 0.05 - 1.500 ± 0.250 inches 38.10 ± 6.35 mm WCBF25 2.355 ± 0.039 59.82 ± 0.99 - 0.570 ± 0.039 14.48 ± 0.99 0.036 ± 0.002 0.91 ± 0.05 0.660 ± 0.039 16.76 ± 0.99 1.500 ± 0.250 inches 38.10 ± 6.35 mm Rev Date: 7/8/2022 This specification may be changed at any time without prior notice Please confirm technical specifications before you order and/or use. 1 F Lead Length Unit www.seielect.com marketing@seielect.com Stackpole Electronics, Inc. WCB / WCBF / NWCB Series Resistive Product Solutions Welded Ceramic Housed Axial Leaded Wirewound Resistor Performance Characteristics Test Test Results Moisture Resistance Thermal Shock Load Life @ 70C - 1000 hours Resistance to Soldering Heat Short Time Overload - 5 X Pn for 5 seconds Dielectric Withstanding Voltage Operating Temperature Range: -55C to +275C ± 5% ± 2% ± 5% ± 2% ± 2% ± 2% Power Derating Curve: Recommended Solder Profile This information is intended as a reference for solder profiles for Stackpole resistive components. These profiles should be compatible with most soldering processes. These are only recommendations. Actual numbers will depend on board density, geometry, packages used, etc., especially those cells labeled with “*”. 100% Matte Tin / RoHS Compliant Terminations Soldering iron recommended temperatures: 330°C to 350°C with minimum duration. Maximum number of reflow cycles: 3. Wave Soldering Description Maximum Recommended Preheat Time 80 seconds 70 seconds Temperature Diff. 140°C 120°C Solder Temp. 260°C 250°C Dwell Time at Max. 10 seconds 5 seconds Ramp DN (°C/sec) N/A N/A Temperature Diff. = Defference between final preheat stage and soldering stage. Minimum 60 seconds 100°C 240°C * N/A Convection IR Reflow Description Maximum Recommended Minimum Ramp Up (°C/sec) Dwell Time > 217°C Solder Temp. Dwell Time at Max. Ramp DN (°C/sec) 3°C/sec 150 seconds 260°C 30 seconds 6°C/sec 2°C/sec 90 seconds 245°C 15 seconds 3°C/sec * 60 seconds * 10 seconds * Rev Date: 7/8/2022 This specification may be changed at any time without prior notice Please confirm technical specifications before you order and/or use. 2 www.seielect.com marketing@seielect.com Stackpole Electronics, Inc. WCB / WCBF / NWCB Series Resistive Product Solutions Welded Ceramic Housed Axial Leaded Wirewound Resistor Recommended Lead Free Resistor Reflow Profile RoHS Compliance Stackpole Electronics has joined the worldwide effort to reduce the amount of lead in electronic components and to meet the various regulatory requirements now prevalent, such as the European Union’s directive regarding “Restrictions on Hazardous Substances” (RoHS 3). As part of this ongoing program, we periodically update this document with the status regarding the availability of our compliant components. All our standard part numbers are compliant to EU Directive 2011/65/EU of the European Parliament as amended by Directive (EU) 2015/863/EU as regards the list of restricted substances. RoHS Compliance Status Standard Product Series WCB WCBF Description Ceramic Housed with Axial Leads Wirewound Resistor Ceramic Housed with Axial Leads Wirewound Resistor Package / Termination Type Standard Series RoHS Compliant Lead-Free Termination Composition Lead-Free Mfg. Effective Date (Std Product Series) Lead-Free Effective Date Code (YY/WW) Axial YES 100% Matte Sn Jan-06 06/01 Axial Yes 100% Matte Sn Always Always “Conflict Metals” Commitment We at Stackpole Electronics, Inc. are joined with our industry in opposing the use of metals mined in the “conflict region” of the Eastern Democratic Republic of the Congo (DRC) in our products. Recognizing that the supply chain for metals used in the electronics industry is very complex, we work closely with our own suppliers to verify to the extent possible that the materials and products we supply do not contain metals sourced from this conflict region. As such, we are in compliance with the requirements of Dodd-Frank Act regarding Conflict Minerals. Compliance to “REACH” We certify that all passive components supplied by Stackpole Electronics, Inc. are SVHC (Substances of Very High Concern) free and compliant with the requirements of EU Directive 1907/2006/EC, “The Registration, Evaluation, Authorization and Restriction of Chemicals”, otherwise referred to as REACH. Contact us for complete list of REACH Substance Candidate List. Rev Date: 7/8/2022 This specification may be changed at any time without prior notice Please confirm technical specifications before you order and/or use. 3 www.seielect.com marketing@seielect.com Stackpole Electronics, Inc. WCB / WCBF / NWCB Series Resistive Product Solutions Welded Ceramic Housed Axial Leaded Wirewound Resistor Environmental Policy It is the policy of Stackpole Electronics, Inc. (SEI) to protect the environment in all localities in which we operate. We continually strive to improve our effect on the environment. We observe all applicable laws and regulations regarding the protection of our environment and all requests related to the environment to which we have agreed. We are committed to the prevention of all forms of pollution. How to Order 1 2 3 4 5 6 7 8 9 10 W C B 5 J B 1 0 0 R Product Series WCB Standard WCBF With standoff NWCB Non-inductive Power Rating Code (W) 5 5 7 7 10 10 15 15 20 20 25 25 Tolerance Code Tol D 0.5% F 1% J 5% Rev Date: 7/8/2022 This specification may be changed at any time without prior notice Please confirm technical specifications before you order and/or use. Code B 4 Packaging Description Size 5 7, 10 Bulk 15 20 25 Resistance Value Quantity 500 250 200 200 200 Four characters with the multiplier used as the decimal holder. 0.1 ohm = R100 33 ohm = 33R0 3.32 Kohm = 3K32 www.seielect.com marketing@seielect.com