DLA DSCC-DWG-10009 REV B-2009 RESISTOR VARIABLE SURFACE MOUNT 4MM MULTITURN TRIMMER 1 4 WATT.pdf

1、 REVISIONS LT DESCRIPTION DATE APPROVED Prepared in accordance with ASME Y14.100 Source control drawing REV STATUS OF PAGES REV PAGES 1 2 3 4 5 6 7 8 PMIC N/A PREPARED BY Andrew R. Ernst DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OH Original date of drawing 19 November 2009 CHECKED BY Andrew R. Ernst

2、 TITLE RESISTOR, VARIABLE, SURFACE MOUNT, 4MM, MULTITURN TRIMMER, 1/4 WATT APPROVED BY Michael A. Radecki SIZE A CODE IDENT. NO. 037Z3 DWG NO. 10009 REV PAGE 1 OF 8 AMSC N/A 5905-E731 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE SUPPLY CEN

3、TER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 10009 REV PAGE 2 1. SCOPE 1.1 Scope1.2 . This drawing describes the requirements for a variable, surface mount, non-wirewound resistor. Part or Identifying Number (PIN)10009 . The complete PIN is as follows: - * * I I I I I I Drawing T

4、ermination Resistance Number (3.3.4) (3.3.1) 2. APPLICABLE DOCUMENTS 2.1 Government documents2.2.1 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 t

5、hese documents are those cited in the solicitation or contract. . DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-PRF-22097 - Resistors, Variable, Non-wirewound, (Adjustment Type), General Specification for. DEPARTMENT OF DEFENSE STANDARDS MIL-STD-202 - Test Methods Standard for Electronic and Electrical C

6、omponent Parts. MIL-STD-1285 - Marking of Electrical and Electronic Parts. (Copies of these documents are available online at https:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2 Order of precedenc

7、e. Unless otherwise noted herein or in the event of a conflict between the text of this document and the references cited herein (except for related specification sheets), the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless

8、 a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Item requirements3.2 . The individual item requirements shall be in accordance with MIL-PRF-22097 and as specified herein. Interface, and physical dimensions. The resistor shall meet the interface, and physical dimensions as specified in M

9、IL-PRF-22097 and herein (see figure 1). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 10009 REV PAGE 3 FIGURE 1. Surface mount trimmer. Provided by IHSNot for Resale

10、No reproduction or networking permitted without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 10009 REV PAGE 4 mm 0.20 0.51 0.56 0.60 0.80 Inches .008 .020 .022 .023 .032 mm 0.90 1.00 1.20 1.30 1.50 Inches .035 .039 .047 .051 .060 mm 1.90 2.2

11、0 2.40 2.50 2.60 Inches .075 .088 .095 .100 .102 mm 2.80 3.50 3.70 3.90 4.60 Inches .110 .138 .146 .154 .180 mm 4.80 5.00 5.10 5.30 6.20 Inches .190 .195 .200 .209 .244 NOTES: 1. Dimensions are in millimeters. 2. Inches are given for information only. 3. Unless otherwise specified, tolerance is .3 m

12、m (0.012 inch). FIGURE 1. Surface mount trimmer Continued. 3.3 Electrical characteristics3.3.1 . Resistance range. The resistance range shall be from 10 ohms to 2 megohms. Nominal resistance values are as specified in table I. 1 Provided by IHSNot for ResaleNo reproduction or networking permitted wi

13、thout license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 10009 REV PAGE 5 TABLE I. Nominal resistance value and resistance value designationNominal resistance value . Resistance value designation Nominal resistance value Resistance value designati

14、on 10 Ohms 20 50 100 200 500 1,000 2,000 5,000 100 200 500 101 201 501 102 202 502 10,000 Ohms 20,000 50,000 100,000 200,000 500,000 1,000,000 2,000,000 103 203 503 104 204 504 105 205 3.3.2 Resistance tolerance3.3.3 . The resistance tolerance shall be 10 percent. Power rating. The power rating shal

15、l be 250 milliwatts at +85C. For operation at temperatures higher than +85C, derate in accordance with figure 2. FIGURE 2. Derating curve3.3.4 . Termination3.3.5 Pure tin. The use of pure tin, as an underplate or final finish is prohibited both internally and externally. Tin content of resistor comp

16、onents 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). . Resistors are available in J, G, and W terminations in accordance with figure 1. 3.3.6 Voltage3.3.7 . The maximum voltage shall be 300 volts. End resistance3.3.8 . The

17、maximum end resistance shall be 1 percent of the resistance value or 2 ohm, whichever is greater. Contact resistance variation. The contact resistance variation shall be 1 percent of the resistance value or 3 ohms, whichever is greater. Provided by IHSNot for ResaleNo reproduction or networking perm

18、itted without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 10009 REV PAGE 6 3.3.9 Temperature range3.3.10 . The temperature range shall be -65C to +150C. Temperature coefficient3.3.11 . The temperature coefficient shall be 100 ppm/C maximum.

19、 Insulation resistance3.3.12 . The insulation resistance shall be 100 megohms minimum. Electrical continuity3.3.13 . Electrical continuity shall be continuous for full mechanical range. Resolution3.3.14 . The resolution shall be essentially infinite. Dielectric strength3.4 . When resistors are teste

20、d as specified in 4.4, there shall be no evidence of mechanical damage, arching, or breakdown. The leakage current shall not exceed 1 milliampere. Mechanical characteristics3.4.1 . Actual electrical travel3.4.2 . The actual electrical travel shall be 11 turns nominal. Shaft torque3.4.3 . The maximum

21、 shaft torque shall be 180 gm-cm maximum. Rotational life3.4.4 . When resistors are tested as specified in 4.5, the change in total resistance shall not exceed 3 percent or 3 ohms, whichever is greater. There shall be no evidence of mechanical damage. Resistance to soldering heat3.4.5 . When resisto

22、rs are tested as specified in 4.6, there shall be no evidence of mechanical damage. The change in resistance shall not exceed 1 percent. Solderability3.5 . When resistors are tested as specified in 4.7, there shall be no evidence of mechanical damage. Environmental characteristics3.6 . Environmental

23、 characteristics shall be in accordance with MIL-PRF-22097, characteristic F. Marking3.7 . Resistors shall be marked with the PIN assigned herein (see 1.2), and manufacturers CAGE code (or logo), in accordance with MIL-STD-1285. Recycled, recovered, or environmentally preferable materials3.8 Manufac

24、turer eligibility. To be eligible for listing as a approved source of supply, a manufacturer shall be listed on the MIL-PRF-22097 Qualified Products List for at least one part, or perform the group A and group B inspections specified herein on a sample agreed upon by the manufacturer and DSCC-VA. .

25、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. 3.8.1 Certificate of compliance. A certificate

26、 of compliance shall be required from manufacturers requesting to be listed as an approved source of supply. 3.9 Workmanship4. VERIFICATION . Resistors shall be uniform in quality and free from defects that will affect life, serviceability, or appearance. 4.1 Qualification inspection4.2 . Qualificat

27、ion inspection is not applicable to this document. Conformance inspection4.2.1 . Inspection of product for delivery4.2.2 . Inspection of product for delivery shall consist of group A and group B inspection of MIL-PRF-22097 (see 6.5). Certification4.3 . The acquiring activity may accept a certificate

28、 of compliance in lieu of group B inspection (see 6.2d). Inspection of packaging. Inspection of packaging shall be in accordance with MIL-PRF-22097. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A

29、 CODE IDENT NO. 037Z3 DWG NO. 10009 REV PAGE 7 4.4 Dielectric strengtha. 600 V rms: Sea level. . Dielectric strength shall be in accordance with MIL-PRF-22097. The following details and exceptions shall apply: b. 250 V rms: 80,000 feet. 4.5 Rotational life4.6 . Rotational life shall be in accordance

30、 with MIL-PRF-22097. The following detail and exception shall apply: 200 cycles. Resistance to soldering heata. Measure total resistance (RT1). . The requirements for resistance to soldering heat shall be as follows: b. Subject units to 215C for 3 minutes. (Using boiling FC-70 fluorinent vapors as t

31、emperature medium.) c. After a minimum of 3 hours, measure total resistance (RT2). d. Calculate total resistance shift (TRS) by using the following formula: 100XRRRTRST1T1T2 =e. This test will be performed before the leads are trimmed and formed into the surface mount terminals. 4.7 Solderabilitya.

32、Steam age in accordance with MIL-STD-202, method 208, 8 hours. . The requirements for solderability shall be as follows: b. Apply solder paste of a composition of 60 percent tin, 40 percent lead, to the middle of the terminal. A sufficient amount of paste is a bead that will cover the entire termina

33、l with a minimum of .005 inch (0.13 mm) thickness on the mounting surface. c. The entire unit shall then be immersed at a rate of 1 .250 inch (25.4 6.35 mm) per second into boiling fluorinent vapors (FC-70) at 215C 5C for 30 seconds, and then removed at a rate 1 .250 inch per second. d. After dippin

34、g, clean the flux from the terminal with isopropyl alcohol. e. Examine the terminals under 10X magnification. f. The terminal mounting area shall be coated with at 95 percent, by a continuous new solder coating, with pin holes and voids not concentrated in any one area and do not exceed 5 percent of

35、 total mounting area. 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 pack

36、aging activity to ascertain packaging requirements. Packaging requirements are maintained by the Inventory Control Points packaging activities within the Military Service or Defense Agency, or within the military services system commands. Packaging data retrieval is available from the managing Milit

37、ary Departments or Defense Agencys 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. Resistors conforming to thi

38、s drawing are intended for use when military specifications do not exist and qualified military devices that will perform the required function are not available for the OEM application, described herein are intended to be used in surface mount applications. Provided by IHSNot for ResaleNo reproduct

39、ion or networking permitted without license from IHS-,-,-DEFENSE SUPPLY CENTER, COLUMBUS COLUMBUS, OHIO SIZE A CODE IDENT NO. 037Z3 DWG NO. 10009 REV PAGE 8 6.2 Ordering dataa. Complete PIN (see 1.2). . The contract or purchase order should specify the following: b. Requirements for delivery: One co

40、py 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 tests or provides certification of complianc

41、e with group B requirements. If purchase order makes no reference to group B screening the manufacturer will provide a certification of compliance (see 4.2.2). 6.3 Tin whisker growth6.4 . The use of alloys with tin content greater than 97 percent, by mass, may exhibit tin whisker growth problems aft

42、er 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 per

43、cent 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). Date code caution note6.5 . The approved source of supplys vendor part number used 100% pure tin (see 6.3

44、) on terminals (DSCC drawing 92021, now cancelled) and was not compliant since August 2000. They are now in compliance with this drawing. More details are available from the approved source for any resistor with the vendors part number and date code before 945C. Critical user parameters6.6 . For cri

45、tical user parameters required during the soldering and board cleaning processing, see manufacturing application notes. User of record. Coordination of this document for future revisions is coordinated only with the approved source of supply and the users of record of this document. Requests to be a

46、dded as a recorded user of this drawing may be achieved online at resistordla.mil 6.7 or in writing to: DSCC-VAT, Post Office Box 3990, Columbus, OH 43218-3990 or by telephone (614) 692-0552 or DSN 850-0552. Approved source of supply. Approved source of supply is listed herein. Additional sources wi

47、ll be added as they become available. Assistance in the use of this drawing may be obtained online at resistordla.milor contact DSCC-VAT, 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/ Vendo

48、r CAGE Vendors name and address 10009-* 3224-FL4 (see 6.4) 32997 Bourns, Incorporated 1200 Columbia Avenue Riverside, CA 92507-2114 1/ Parts must be purchased to the DSCC PIN to assure that all performance requirements and tests are met. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-