KAL Series Stackpole Electronics, Inc. Aluminum Housed Chassis Mount Resistor Resistive Product Solutions Features: • Aluminum housing for maximum heat dissipation • Complete welded construction • 10 – 50 W tinned copper terminals • 100 – 250 W threaded terminals • Centerless ground steatite or alumina cores • Molded epoxy body for heat transfer • Non-inductive winding available (NKAL) • Suitable for electrical component grade wash process and can be conformally coated or potted • RoHS compliant, lead free and halogen free Electrical Specifications Power Rating @ 25 °C Dielectric MIL-R-26 Ohmic Range (Ω) and Tolerance Type / Code (Watts) Withstanding TCR (ppm/ºC) Ref. Commercial MIL Voltage (VAC) 0.1% 0.5% 1%, 3%, 5% KAL10 RE-65 12.5 10 1000 0.05 - 30 K KAL25 RE-70 25 20 1 - 1 K 1 - 1 K 0.05 - 51.1 K 3000 KAL50 RE-75 50 30 0.05 - 150 K KAL100 RE-77 100 75 < 0.1 Ω = ±100 ppm 1 - 500 0.1 - 3 K 2500 0.1 Ω - 9.9 Ω = ±50 ppm - KAL250 RE-80 250 120 - 0.1 - 3 K 10 Ω - 49 Ω = ±30 ppm NKAL10 12.5 1000 0.05 - 15 K > 50 Ω = ±20 ppm NKAL25 25 1 - 499 1 - 499 0.05 - 24.9 K 3000 NKAL50 - 50 - 0.05 - 75 K NKAL100 100 1 - 249 0.1 - 1.5 K 2500 - NKAL250 250 - 0.1 - 1.5 K Performance Characteristics Test Test Condition Result Short Time Overload 5 X wattage rating - 5 seconds ∆R ± (0.5% + 0.05 Ω) MAX Moisture Resistance Temp 40 ºC moisture 95% CDC 100 V for 500 hours ∆R ± (0.5% + 0.05 Ω) MAX Load rating (chasis is mounted) Load Life 1.5 hours ON, 0.5 hours OFF. Repeated for 1000 hours ∆R ± (1.5% + 0.05 Ω) MAX Operating Temperature: -55 °C to +275 °C Power Derating Curve: %) 100 ( wer o P 75 d e at R nt 50 e c Per 25 0 25 50 100 150 200 250 275 300 Ambient Temperature (ºC) Rev Date: 07/02/2019 1 www.seielect.com This specification may be changed at any time without prior notice marketing@seielect.com Please confirm technical specifications before you order and/or use.

KAL Series Stackpole Electronics, Inc. Aluminum Housed Chassis Mount Resistor Resistive Product Solutions Mechanical Specifications – KAL/NKAL10, 25, 50 Type A B C D E F G Unit 0.562 ± 0.005 0.625 ± 0.005 0.750 ± 0.031 1.375 ± 0.062 0.420 ± 0.015 0.800 ± 0.015 0.390 ± 0.031 inches KAL/NKAL10 14.27 ± 0.13 15.88 ± 0.13 19.05 ± 0.79 34.93 ± 1.57 10.67 ± 0.38 20.32 ± 0.38 9.91 ± 0.79 mm 0.719 ± 0.005 0.781 ± 0.005 1.062 ± 0.031 1.938 ± 0.062 0.550 ± 0.015 1.080 ± 0.015 0.546 ± 0.031 inches KAL/NKAL25 18.26 ± 0.13 19.84 ± 0.13 26.97 ± 0.79 49.23 ± 1.57 13.97 ± 0.38 27.43 ± 0.38 13.87 ± 0.79 mm 1.563 ± 0.005 0.844 ± 0.005 1.968 ± 0.031 2.781 ± 0.062 0.630 ± 0.015 1.140 ± 0.015 0.610 ± 0.031 inches KAL/NKAL50 39.70 ± 0.13 21.44 ± 0.13 49.99 ± 0.79 70.64 ± 1.57 16.00 ± 0.38 28.96 ± 0.38 15.49 ± 0.79 mm Type H J K L M N P Unit 0.075 ± 0.010 0.190 ± 0.015 0.093 ± 0.010 0.093 ± 0.005 0.102 ± 0.015 0.086 ± 0.005 0.312 ± 0.062 inches KAL/NKAL10 1.91 ± 0.25 4.83 ± 0.38 2.36 ± 0.25 2.36 ± 0.13 2.59 ± 0.38 2.18 ± 0.13 7.92 ± 1.57 mm 0.088 ± 0.010 0.260 ± 0.015 0.172 ± 0.010 0.125 ± 0.005 0.115 ± 0.015 0.086 ± 0.005 0.438 ± 0.062 inches KAL/NKAL25 2.24 ± 0.25 6.60 ± 0.38 4.37 ± 0.25 3.18 ± 0.13 2.92 ± 0.38 2.18 ± 0.13 11.13 ± 1.57 mm 0.088 ± 0.010 0.300 ± 0.015 0.196 ± 0.010 0.125 ± 0.005 0.107 ± 0.015 0.086 ± 0.005 0.410 ± 0.062 inches KAL/NKAL50 2.24 ± 0.25 7.62 ± 0.38 4.98 ± 0.25 3.18 ± 0.13 2.72 ± 0.38 2.18 ± 0.13 10.41 ± 1.57 mm Mechanical Specifications – KAL/NKAL100 Type A B C D E F Unit 2.717 ± 0.079 2.362 ± 0.039 3.504 ± 0.039 5.315 ± 0.039 1.811 ± 0.039 2.756 ± 0.039 inches 69.00 ± 2.00 60.00 ± 1.00 89.00 ± 1.00 135.00 ± 1.00 46.00 ± 1.00 70.00 ± 1.00 mm KAL/NKAL100 G H J L P Unit 1.752 ± 0.039 0.187 ± 0.031 0.748 ± 0.020 0.197 ± 0.012 0.906 ± 0.079 inches 44.50 ± 1.00 4.75 ± 0.79 19.00 ± 0.50 5.00 ± 0.30 23.00 ± 2.00 mm Rev Date: 07/02/2019 2 www.seielect.com This specification may be changed at any time without prior notice marketing@seielect.com Please confirm technical specifications before you order and/or use.

KAL Series Stackpole Electronics, Inc. Aluminum Housed Chassis Mount Resistor Resistive Product Solutions Mechanical Specifications – KAL/NKAL250 Type A B C D E F G Unit 3.858 ± 0.079 2.520 ± 0.039 4.488 ± 0.039 6.102 ± 0.039 2.087 ± 0.039 3.031 ± 0.039 2.185 ± 0.039 inches 98.00 ± 2.00 64.00 ± 1.00 114.00 ± 1.00 155.00 ± 1.00 53.00 ± 1.00 77.00 ± 1.00 55.50 ± 1.00 mm KAL/NKAL250 H J L P R S Unit 0.250 ± 0.031 0.984 ± 0.020 0.197 ± 0.012 0.827 ± 0.079 0.866 3.071 inches 6.35 ± 0.79 25.00 ± 0.50 5.00 ± 0.30 21.00 ± 2.00 22.00 78.00 mm 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 Stan dard Lead-Free Standard Package / Lead-Free Product Description Termination Series Lead-Free Termination Mfg. Effective Date E f f e c t i v e D a te RoHS Composition Code Series Type (Std Product Series) Compliant (YY/WW) Aluminum Housed Surface Mount Resistor KAL General Purpose/Precision S p e c i a l YES 100% Matte Sn Jan-06 06/01 High Power Resistor “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. Rev Date: 07/02/2019 3 www.seielect.com This specification may be changed at any time without prior notice marketing@seielect.com Please confirm technical specifications before you order and/or use.

KAL Series Stackpole Electronics, Inc. Aluminum Housed Chassis Mount Resistor Resistive Product Solutions 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. 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 11 K A L 1 0 F B 1 0 K 0 Product Series Power Rating Tolerance Packaging Resistance Value Code Description Code Power Code Tol Code Description Size MOQ Four characters with the KAL Standard 10 10 W B 0.1% 10 250 multiplier used as the NKAL Non-inductive 25 25 W D 0.5% 25 250 decimal holder. 50 50 W F 1% B Bulk 50 250 "L" used as multiplier 100 100 W H 3% 100 60 of 10-3 for any value 250 250 W J 5% 250 30 under 0.1 ohm. 0.05 ohm = 50L0 0.4 ohm = R400 1 ohm = 1R00 30 Kohm = 30K0 Rev Date: 07/02/2019 4 www.seielect.com This specification may be changed at any time without prior notice marketing@seielect.com Please confirm technical specifications before you order and/or use.