Type MK Precision Power Film Radial-Lead Resistors Page 1 of 2 Non-Inductive with Expanded Resistance Range 1 ohm to 100 Megohms Here are the precision radial lead resistors that provide high density packaging in circuit board applications. Available in three miniature rectangular package con gurations with standard lead spacings, Type MK Precision Power Ra di al- Lead Film Resistors now cover the entire resistance range from 1 ohm to 100 Megohms. Constructed with Caddock s Micronox resistance lms red onto a solid ceramic substrate, Type MK Precision Film Re sis tors combine all of these outstanding advantages: 1% Resistance Tolerance is Standard - tolerances to 0.1% are available on special order. Operating Temperature - from -55C to +175C. Full Power Rating at +125C. Temperature Coef cient is 50 ppm/C from 5 ohms to 5 Megohms and 80 ppm/C up to 100 Megohms - referenced to +25C with the R taken at -15C and +105C. Extended Life Stability is Typically Better Than 0.1% per 1,000 Hours. Caddock s Non-Inductive Performance - provides faster settling times and minimum distortion in all types of high One standard resistor con guration can simplify board frequency circuits. layouts. This combination of performance advantages in a small, standardized case can simplify many engineering and With the exceptionally wide range of resistance values pro duc tion problems: that are available in each model of Type MK Precision Film Resistors, Resistors, circuits circuits can can now now be be One size of Type MK resistor can replace many sizes of designed for maximum axial-lead resistors. p a c k a g i n g d e n s i t i e s This table ofR style axial-lead resistors shows the without the need for many sizes and power ratings that can be replaced with one leaving extra space where of the three models of Type MK Precision Film Resistors, rreessiissttoorr vvaalluuee cchhaannggeess ccaan n within the maximum allowable voltage ratings. require require larger larger resistors resistors or or non-non- Comparison of Type MK andR Ratings and Dimensions uniform lead spacings. Mounting Even the smallest Type MK Resistor Power Maximum Hole resistor can replace all of these Type Rating Resistance Standardization of resistor size can speed Spacing RN type resistors assembly procedures and reduce procurement costs. MK120 .150 0.50 W 40 Megohms or MK620 (3.81) The standardization of resistor size can pay additional MK132, MK132V, .200 0.75 W 100 Megohms dividends by simplifying assembly procedures. The radial MK632, or MK632V (5.08) leads do not require additional bending prior to insertion, and .400 RN50 RN50 0.05 W 1 Megohm the standard lead spacing can reduce the time required for (10.15) assembly500 RN55 RN55 0.10 W 5 Megohms (12.70) The combination of higher power ratings and smaller size .625 RN60 RN60 0.125 W 10 Megohms can also lower procurement costs. By reducing the wide (15.90) va ri ety of sizes and types of axial-lead resistors to a single, .875 RN65 0.25 W 20 Megohms RN65 standardized resistor type, unit prices can be lowered and (22.20) inventory problems simpli ed. For speci c price and delivery 1.000 information, contact our Sales Of ce. RN70 0.50 W 40 Megohms RN70 (25.40) All outline drawings full size - dimensions in inches and (millimeters). The largest Type MK - rated at .75 watt - requires less board space than even the .05 watt RN50. The smallest Type MK - rated at .50 watt - provides power dis si pa tion equal to the RN70 resistor. The RN70 resistor requires a mounting hole spacing of 1 inch and a side-to-side spacing of .25 inch, resulting in a total mounting area of .25 square inch - 10 times the area required for a .50 Watt Type MK resistor Applications Engineering Sales and Cor po rate Of ce 17271 North Umpqua Hwy. 1717 Chicago Av e nue CADDOCK Roseburg, Oregon 97470-9422 Riverside, California 92507-2364 e-mail: caddock caddock.com web: www.caddock.com Phone: (541) 496-0700 Phone: (951) 788-1700 For Caddock Distributors listed by country see caddock.com/contact/dist.html Fax: (541) 496-0408 Fax: (951) 369-1151 2004 Caddock Electronics, Inc. 28 IL100.1004Type MK Precision Power Film Radial-Lead Resistors Page 2 of 2 Type MK Precision Film Resistors - Low and Standard Resistance Ranges Resistance Oper. Model Watt- Max. Dielect. Temp. Dimensions Encapsulation Leadwire Comments Low Standard Standard No. age Voltage Strength Max. Min. Min. Max. MK120 0.50 200 175C 300 1 5 2 Meg Ref. Case Dwg. Transfer Molded Tinned Copper MK132 0.75 400 175C 400 1 5 5 Meg Ref. Case Dwg. Transfer Molded Tinned Copper MK132V 0.75 400 175C 400 1 5 5 Meg Ref. Case Dwg. Transfer Molded Tinned Copper With Standoff Resistance Tolerance: 1% (tolerances Temperature Coefcient: Load Life: 1,000 hours at +125C at rated to 0.1% available on values of 30 ohms or power, R (0.4 percent +0.01 ohm) Resistance Range Temp. Coef. higher). max. Standard : 5 and above 50 ppm/C Overload/Overvoltage: 5 times rated Thermal Shock: Mil-Std-202, Method 107, power with applied voltage not to Cond. B, R (0.2 percent +0.01 ohm) Low : 1 to 4.99 200 ppm/C exceed 1.5 times maximum continuous max. operating voltage for 5 seconds, R (0.15 Temperature Coefficient referenced to Moisture Resistance: Mil-Std-202, Meth- percent + 0.01 ohm) max. +25C, R taken at -15C and +105C. od 106, R (0.5 percent + 0.01 ohm) max. Operating Temperature: -55C to Insulation Resistance: 10,000 Megohms, +175C. minimum. Measurement Note: Resistance measurement on low resistance values shall be made at a point within 0.2 inch (5.08 mm) of the body. Type MK Precision Film Resistors - Extended Resistance Range Resistance Oper. TC Model Watt- Max. Dielect. Temp. ppm/ Dimensions Encapsulation Leadwire Comments No. age Voltage Strength Min. Max. Max. C MK620 0.50 200 175C 300 80 2.01 Meg 40 Meg Ref. Case Dwg. Transfer Molded Tinned Copper MK632 0.75 400 175C 400 80 5.01 Meg 100 Meg Ref. Case Dwg. Transfer Molded Tinned Copper MK632V 0.75 400 175C 400 80 5.01 Meg 100 Meg Ref. Case Dwg. Transfer Molded Tinned Copper With Standoff Resistance Tolerance: 1% (consult Temperature Coefcient: See Table for Load Life: 1,000 hours at +125C at rated factory for tighter tolerances). TC value. TC referenced to +25C, R power, R 0.5% max. taken at -15C and +105C. Overload/Overvoltage: 1.5 times max. Thermal Shock: Mil-Std-202, Method 107, voltage for 5 seconds, R 0.5% max. Insulation Resistance: 10,000 Megohms, Cond. B, R 0.5% max. minimum. Moisture Resistance: Mil-Std-202, Operating Temperature: -55C to Method 106, R 0.5% max. +175C. Case Case Case Model MK120 and MK620 Model MK132 and MK632 Model MK132V and MK632V .095 .005 .095 .005 .290 .290 .010 .095 .005 .245 (2.41 .13) (2.41 .13) (2.41 .13) .010 (7.37 .26) .010 (7.37 (6.22 MK632 MK632V .030 .004 .290 .010 MK120 .26) 100 MEG 100 MEG .26) 10.0 (.76 .10) 1% 1% 1% (7.37 .26) .245 .010 .290 .010 .250 .050 .025 .002 +.125 +.125 (6.22 .26) (7.37 .26) 1.50 1.50 .090 (6.35 1.27) (.64 .05) DIA., -.000 -.000 (2.29) LEADWIRE +3.18) +3.18) .025 .002 .025 .002 (38.10 .200 .015 OFFSET (38.10 -0.00) (.64 .05) DIA., -0.00) (.64 .05) DIA., (5.08 .38) .012 (.31) LEADWIRE LEADWIRE (CENTERED) FROM OFFSET OFFSET CENTERLINE .012 (.31) .200 .015 .150 .015 .012 (.31) FROM (5.08 .38) (3.81 .38) FROM (CENTERED) CENTERLINE (CENTERED) CENTERLINE 100 Derating Curve: Ordering Information: 80 MK132 - 500K - 1% 60 Model Number: Tolerance 40 20 Resistor Value: 0 25 75 125 175 225 ALL DIMENSIONS IN INCHES AND (MILLIMETERS) AMBIENT TEMPERATURE, C Applications Engineering Sales and Corporate Ofce 17271 North Umpqua Hwy. 1717 Chicago Avenue CADDOCK Roseburg, Oregon 97470-9422 Riverside, California 92507-2364 e-mail: caddock caddock.com web: www.caddock.com Phone: (541) 496-0700 Phone: (951) 788-1700 For Caddock Distributors listed by country see caddock.com/contact/dist.html Fax: (541) 496-0408 Fax: (951) 369-1151 2004 Caddock Electronics, Inc. 28 IL100.1004 RATED LOAD, %