REVISIONS LTR DESCRIPTION DATE Prepared in accordance with ASME Y14.100 REV STATUS OF PAGES APPROVED Selected item drawing REV PAGES 1 2 3 4 5 6 PMIC N/A PREPARED BY Andrew R. Ernst DESIGN ACTIVITY: DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO Original date of drawing CHECKED BY Andrew R. Ernst TITLE RESISTOR NETWORK, FIXED, FILM, SURFACE MOUNT, VOLTAGE DIVIDER, 3 PIN 8 December 2006 APPROVED BY Michael Radecki SIZE A REV AMSC N/A CODE IDENT. NO. 037Z3 DWG NO. 06018 PAGE 1 OF 5 5905-E595 1. SCOPE 1.1 Scope. This drawing describes the requirements for a fixed, film, 3 pin surface mount, voltage divider, resistor network. 1.2 Part or Identifying Number (PIN). The complete PIN is as follows (see 3.7): 06018 I I Drawing number **** I I R1 resistance (see 3.3.1 & 3.3.2.2) **** I I R2 resistance (see 3.3.1 & 3.3.2.2) * I I Absolute tolerance (see 3.3.4.1) * I I Ratio tolerance (see 3.3.4.2) Example of the PIN for a two 1 kilohms divider with 1 percent tolerances: 0601810011001FF 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-PRF-83401 - Resistor Networks, Fixed, Film and Capacitor-Resistor Networks, Ceramic Capacitor and Fixed, Film, Resistors, General Specification for. (Copies of these documents are available online at http://assist.daps.dla.mil/quicksearch/ or http://assist.daps.dla.mil/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.3 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Item requirements. The individual item requirements shall be in accordance with MIL-PRF-83401, and as specified herein. 3.2 Interface and physical dimensions. Resistors shall meet the interface and physical dimensions as specified herein (see figure 1). 3.3 Electrical characteristics. 3.3.1 Resistance. The nominal resistance is expressed in ohms and is identified by four digits. The first three digits represent the significant figures and the last digit specifies the number of zeros to follow. When the value of the resistance is less than 1,000 ohms, or when fractional values of an ohm are required, the letter “R” is substituted for one of the significant digits to represent the decimal point. Resistance values from the standard resistance value table in MIL-PRF-83401 shall be used. DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE CODE IDENT NO. A 037Z3 REV DWG NO: 06018 PAGE 2 Schematic Dimensions A A1 0.033 ±0.007 (0.005 ±0.004) (0.838 ±0.177) 0.127 ±0.101 W K 0.018 ±0.003 0.020 ±0.004 (0.457 ±0.076) (0.508 ±0.101) B 0.112 ±0.008 (2.844 ±0.203) L 0.097 ±0.014 (2.463 ±0.355) H S 0.051 ±0.004 0.075 ±0.005 (1.295 ±0.101) (1.905 ±0.127) J T 0.005 ±0.002 0.007 ±0.004 (0.127 ±0.050) (0.117 ±0.101) Ø 8° NOTES: 1. Dimensions are in inches, millimeters are shown in parentheses. 2. Millimeter equivalents are given for general information only. FIGURE 1. Resistor network, 3 pin voltage divider. DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE CODE IDENT NO. A 037Z3 REV DWG NO: 06018 PAGE 3 3.3.2 Resistance range. 3.3.2.1 Package resistance range. The package resistance range shall be 20 ohms to 200 kilohms (see 6.5). 3.3.2.2 Individual resistance range. The individual resistance range per resistor is 10 ohms to 100 kilohms. 3.3.3 Resistance temperature coefficient. The resistance temperature coefficient shall be ±100 ppm/°C with a tracking resistance temperature coefficient of ±50 ppm/°C for resistance values from 10 ohms to 4.99 kilohms, and ±25 ppm/°C with a tracking resistance temperature coefficient of ±5 ppm/°C for resistance values from 5 kilohms to 100 kilohms. 3.3.4 Resistance tolerance. 3.3.4.1 Absolute resistance tolerances. The absolute resistance tolerances are available in (B) ±0.1 percent, (C) ±0.25 percent, (D) ±0.5 percent, (F) ±1.0 percent, (G) ±2.0 percent, (J) ±5.0 percent and (K) ±10.0 percent (see 6.5). 3.3.4.2 Ratio resistance tolerances. The ratio resistance tolerances are available in (A) ±0.05 percent, (B) ±0.1 percent, (C) ±0.25 percent, (D) ±0.5 percent, (F) ±1.0 percent, and (G) ±2.0 percent (see 6.5). 3.3.5 Characteristic. The characteristics shall be in accordance with MIL-PRF-83401, characteristic K. 3.3.6 Power rating. The package power rating shall be .200 watt and the element power rating shall .100 watt, all at +70°C. For operation at temperatures greater than +70°C, derate in accordance with figure 2. 3.3.7 Operating temperature. The operating temperature shall be -55°C to +125°C. 3.4 Pure tin. The use of pure tin, as an underplate or final finish is prohibited both internally and externally. Tin content of resistor components and solder shall not exceed 97 percent, by mass. Tin shall be alloyed with a minimum of 3 percent lead, by mass (see 6.3). FIGURE 2. Derating curves for high ambient temperatures. 3.5 Moisture resistance. When resistor networks are tested as specified in 4.3, there shall be no evidence of mechanical damage; the change in resistance between the initial and final measurements shall not exceed ±(0.05 percent + 0.01 ohm). 3.6 Manufacturers performance data. The manufacturer’s technical specifications and performance data shall be made available to the customer for a period of two years. DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE CODE IDENT NO. A 037Z3 REV DWG NO: 06018 PAGE 4 3.7 Marking. Marking is not required on the resistor; however, each unit package shall be marked with the PIN assigned herein (see 1.2), vendor CAGE code, and date and lot codes. 3.8 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. 3.9 Certificate of compliance. A certificate of compliance shall be required from manufacturers requesting to be a suggested source of supply. 3.10 Workmanship. The resistor shall be uniform in quality and free from any defects that will affect life, serviceability, or appearance. 4. VERIFICATION 4.1 Qualification inspection. Qualification inspection is not applicable to this document. 4.2 Conformance inspection. 4.2.1 Inspection of product for delivery. Inspection of product for delivery shall consist of group A inspection (M level part) and group B inspection of MIL-PRF-83401. Additionally; a power moisture resistance test as specified in 4.3 shall be performed. 4.2.2 Certification. The acquiring activity may accept a certificate of compliance in lieu of performing group B inspection and the power moisture resistance test. 4.3 Moisture resistance. Resistor networks shall be tested in accordance with MIL-PRF-83401. The following details and exceptions shall apply: a. The test is to be performed on an annual basis. b. A 30 piece sample shall be used with 0 defects allowed. 5. PACKAGING 5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or order (see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor personnel, these personnel need to contact the responsible packaging activity to ascertain packaging requirements. Packaging requirements are maintained by the Inventory Control Point's packaging activity within the Military Department or Defense Agency, or within the military service’s system commands. Packaging data retrieval is available from the managing Military Department's or Defense Agency's automated packaging files, CD-ROM products, or by contacting the responsible packaging activity. 6. NOTES (This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.) 6.1 Intended use. Surface mount resistors are used in electronic circuits where space is a major concern. 6.2 Ordering data. The contract or purchase order should specify the following: a. Complete PIN (see 1.2). b. Requirements for delivery and one copy of the conformance inspection data or certification of compliance that parts have passed conformance inspection with each shipment of parts by the manufacturer. c. Requirements for packaging and packing. d. Whether the manufacturer performs the group B inspection and the moisture resistance test or provides a certificate of compliance (see 4.2.2). DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE CODE IDENT NO. A 037Z3 REV DWG NO: 06018 PAGE 5 6.3 Tin whisker growth. The use of alloys with tin content greater than 97 percent, by mass, may exhibit tin whisker growth problems after manufacture. Tin whiskers may occur anytime from a day to years after manufacture and can develop under typical operating conditions, on products that use such materials. Conformal coatings applied over top of a whisker-prone surface will not prevent the formation of tin whiskers. Alloys of 3 percent lead, by mass, have shown to inhibit the growth of tin whiskers. For additional information on this matter, refer to ASTM-B545 (Standard Specification for Electrodeposited Coatings of Tin). 6.4 User of record. Coordination of this document for future revisions is coordinated only with the suggested source of supply and the users of record of this document. Requests to be added as a recorded user of this drawing may be achieved online at [email protected] or in writing to: DSCC-VAT, Post Office Box 3990, Columbus, OH 43218-3990 or by telephone (614) 692-0552 or DSN 850-0552. 6.5 Suggested source of supply. Suggested source of supply is listed herein. Additional sources will be added as they become available. Assistance in the use of this drawing may be obtained online at [email protected] or contact DSCCVAT, Post Office Box 3990, Columbus, OH 43218-3990 or by telephone (614) 692-0552 or DSN 850-0552. DSCC drawing PIN Vendors similar designation or type number 1/ Vendor CAGE Vendor's name and address MPM 57489 SOT23 57027 RTY 59124 Vishay Thin Film, LLC. 2160 Liberty Drive Niagara Falls, NY 14304 IRCTT Advanced Film Division 4222 South Staples Street Corpus Christi, TX 78411-2796 KOA Speer Electronics, Inc. Bolivar Drive PO Box 547 Bradford, PA 16701-0547 06018 Res. Values: 100Ω to 100 kΩ Absol. res. tol.: B, C, D, F, G, J, K (see 3.3.4.1) Ratio res. tol,; A, B, C, D, F, G (see 3.3.4.2) 06018 Res. Values: 500Ω to 100 kΩ Absol. res. tol.: B, C, D, F, G, J, K (see 3.3.4.1) Ratio res. tol,; A, B, C, D, F, G (see 3.3.4.2) 06018 Res. Values: 30Ω to 100 kΩ Absol. res. tol.: B, C, D, F, G, J (see 3.3.4.1) Ratio res. tol,; B, C, D, F, G (see 3.3.4.2) 1/ Parts must be purchased to the DSCC PIN to assure that all performance requirements and tests are met. DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE CODE IDENT NO. A 037Z3 REV DWG NO: 06018 PAGE 6