1、MILITARY SPECIFICATION -c - _- _ MIL- C- 50740(MU) 8 August 1973 CIRCUIT CARD ASSEMBLY: 11738808 (BATTERY CHARGE SENSOR) This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1. 1 This specification covers one type of electronic assembly known
2、as Circuit Card Assembly: (see 6. i). 11738808 (Battery Charge Sensor) 2. APPLICABLE DOCUMENTS 2. 1 The following documents, of the issue in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein. SPECIFICA TlONS Mi lita ry MIL
3、-F- 13926 Fire Controi Materiel: General Specification Governing the Manufacture and Inspection of MIL- 1-456 07 Inspection Equipment; Acquisition , Maintenance, and Disposition of MIL-S-45743 Soldering, Manual Type, High Re liability E le ctrical, E le ctronic , Instrument, Communication, and Radar
4、 for Aerospace and Control Systems, Procedure for FSC - 1240 -. I- .- - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-50740 12 E 77977Ob 0330437 b I! Solder Bath Soldering of Printed Wiring Assemblies, Automatic Machine Type Sampling Procedur
5、es and Tables for Inspection by Attributes Quality Assurance Terms and Definitions Environmental Test Methods 2 MIL- C - 50740( MU) 8 August 1973 MIL -S -46944 STANDARDS MIL-STD- 105 MIL-STD- 109 MIL-STD-810 DRA WINGS U. S. Army, Frankford Arsenal F11738808 Circuit Card Assembly: 11 738853 (Battery
6、Charge Sensor) PACKAGING DATA SHEET 11 738808 Packaging of Circuit Gard Assem- bly: 11738808 (Battery Charge Sensor ) (Copies of specifications, standards, drawings, and packaging data sheets required by suppliers in connection with specific procurement functions should be obtained from the procurin
7、g activity or as directed by the contracting officer. ) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C - 50740( MU) 8 August 1973 3. REQUIREMENTS 3.1 Fabrication. The circuit card assembly, herein referred to as the assembly, shall be manufact
8、ured in accordance with Drawing F11738808 and drawings pertaining thereto. . 3.2 General specification. The assembly shall meet the following requirements, where applicable, of MIL-F-13926: a. Order of precedence b. Dimensions and tolerances c. Part identification and marking d. Electrical and elect
9、ronic assemblies e. Wo r kman s hip. 3. 2. 1 Soldering. Soldering shall be in accordance with MIL-S-45743 or MIL-S-46844, except that bare copper wire exposure shall be permitted at clipped ends of component ledc. shal amb shal 3.3 Performance. Unless otherwise specified, the assembly meet the perfo
10、rmance requirements of this specification at standard ent tempe ratures between 60 degrees Fahrenheit (OF) and 90F. 3. 3. 1 Loads, power, signals, and interconnections. The assembly perform as specified herein when the loads, power, signals, and - interconnections of table I are applied as specified
11、, 3.3. 1. 1 Battery power switching. With the power sources (item 2) of table I applied, and with an input voltage of f24. f2. Q Vdc applied to P1-15, the voltage at Pl-5 shall be +24, O *3. O Vdc. voltage at Pl-15 decreased to t16.5 *O. 5 Vdc, the voltage at PI-5 shall be to. 4 &O. 4 Vdc. With the
12、input 3. 3. 1.2 Maltunction (MALF) light disable. With the power source and input voltage of +24. O h2. O Vdc applied as in 3.3. 1. 1, the output voltage at P1-8 shall be +5. O *O. 3 Vdc. disconnected, the output voltage at PI-8 shall be +O. 2 *O. 2 Vdc. the voltage at Pl-15 disconnected, the output
13、 voltage at P1-8 shall be +5. O *O. 3 Vdc. With Pl-22 and Pl-7 With 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL - C - 50740 (MU) 8 August 1973 TABLE I LOADS, POWER, SIGNALS, AND INTERCONNECTiONS tem 1. 1.1 - 1.2 1.3 1.4 1.5 1.6 1.7 2. 2.1 2
14、.2 2.3 2.4 3. 3.1 4. - Conditions Loads Resistor Resistor Xesistor Resistor Re sisto r Resistor Re si stor Power Source t24 Vdc t15 Vdc t5 Vdc -6 Vdc Signal Source t17 to t24 Vdc Inte r c onne c tior Cha racteri stic s 3. 6 kilohm (ka) f570 in series with t24 volts (V) (item 2. 1) 1. 6 ka *5 70 in s
15、eries with t24V (item 2. 1) 62 OR *570 5.6ka *5 70 6202 *5% 1000 *570 loon &570 Tolerance: f2. OV Ripple: - O. 1 V p-p Tolerance: +O. 7 V Ripple. 50. 025 v p-p Tolerance: f0.2 V Ripple: 50.025 v p-p Tolerance: f0.2 V Ripple: O. 025 V p-p - 4 Connections Connected between thc following pins: P1-4(t)
16、and P1-7(-) Pi -5(t) and P1-7(-) P1-1 and Pl-2 P1-8 and P1-12 Pl-11 and Pl-2 Pl-17 and Pl-7 P1-18 and P1-7 See items 1.1 and 1.2 Pi-2(+) and Pi-7(-) P1-12(+) and P1-7(-) P1 -lo(-) and P1-7(t) Applied as specified herein with return to Pi-7(-) P1-7 and P1-22 except as specified herein Provided by IHS
17、Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C - 50740(MU) 8 August 1973 3. 3.1. 3 Battery drain light drive. With the power sources (item 2) of table I applied and with the input voltage at Pl-15 set to t-24. Oj-2. O Vdc, the voltage at P1-1 shall be 15. O
18、*l. O Vdc. decreased to +16, 5 *O. 5 Vdc, the voltage at Pl-1 shall be t. 1. O *O. 7 Vdc. With the voltage at Pl-15 3. 3.1. 4 Battery low light drive. With the power sources (item 2) of table I applied, and with f25. O IO. 5 Vdc then t21. O zkl. O Vdc applied to pin P1-6, the output at pin Pl-11 sha
19、ll be +15. O Il. O Vdc and to. 4 -+O. 4 Vdc respectively, 3. 3. 1.5 MALE 1 signal. table I applied, and with t24. O *O. 2 Vdc applied to Pl-6, the output at Pl-14 shall be to. 2 IO. 2 Vdc. at Pl-14 shall be t5. O IO. 3 Vdc. With the power sources (item 2) of With Pl-20 connected to Pl-6, the output
20、3.3.1.6 Converter drive signal. With the power sources (item 21 of table I applied, the output voLtage at Pl-17 and P1-18 shall be as shown in figure 1. - t2.5j-0. 4V T- - - -+0.2*0.2V Output at Pl-17 - - 22. 5+0.4V Output at - to. 210.2v Pl-18 T 12 = T = 35* 15psec Figure 1. Converter Drive Signal
21、Waveforms 3.3.2 Environmental 3.3.2.1 Storage temperature. The assembly shall meet the require- ments of 3.3.1 at ambient temperature after exposure to and thermal stabilization at -80F and t160F. 3. 3.2.2 Operating temperatures. The assembly shall meet the requirements of 3. 3.1 while exposed to an
22、d thermally stabilized at -40F and +125OF, subsequent to which the requirements of 3. 3.1 shalL be met at ambient temperature 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted witho
23、ut license from IHS-,-,-MIL-C -50740(MU) 8 August 1973 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the supplier is responsible for the per- formance of all inspection requirements as specified herein, Except as othe
24、rwise specified, the supplier may utilize his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. the right to perform any of the inspections set forth in the specification where such inspections are deemed n
25、ecessary to assure supplies and services conform to prescribed requirements. The government reserves 4.1.1 General provisions. The component and subassembly inspection requirements of MIL-F-13926 form a part of the quality assurance provisions of this specification. terms shall be as listed in MIL-S
26、TD-109. Definitions of inspection 4.2 First article (initial production) approval. The requirement for first article approval and the resimnsiblitv (Government or con- ,. tractor) for first article testing shal be as specified in the contract. The sample for first article approval tests shall consis
27、t of three assem- blies. The sample shall be manufactured in the same manner, using the same materials, equipment, processes, and procedures as used in regular production. A11 parts and materials, including packaging and packing, shall be obtained from the same source of supply as used in regular pr
28、oduction. 4.2.1 Government testing, When the Government is responsible for conducting first article approval tests, the contractor, prior to sub- mitting the sample to the Government, shall inspect the sample to insure conformance to all the requirements of this specification. A record of this inspe
29、ction, including certificates of conformance for materials, shall be submitted with the sample. 4.2.2 Contractor testing. When the contractor is responsible for conducting the first article approval tests, the sample shall be inspected by the contractor for all the requirements of this specification
30、. The sample and a record of this inspection, in-cluding certificates of conformance for materials, shall be submitted to the Government for approval. inspection. The Government reserves the right to witness the contractors 4. 3 Inspection provisions 4. 3.1 Submission of product. Unless otherwise sp
31、ecified herein, or by the contracting officer, inspection lot size, lot formation and pre- sentation of lots shall be in accordance with inspection or sampling pro- cedures herein and submission o product provisions of MIL-STD-105. Provided by IHSNot for ResaleNo reproduction or networking permitted
32、 without license from IHS-,-,-MIL- C-50740(MU) 8 August-1973 4. 3.2 Examination and tests 4.3.2.1 Components and subasse mbli es. All components and subassemblies shall be inspected in accordance with the inspection pro- visions contained in the respective specifications and ,Supplementary Quality A
33、ssurance Provisions (SQAP) listed in the technical data package (TDP). In the absence of SQAPs, the applicable quality assurance provisions of MIL-F-13926 shall apply. 4. 3. 2. 2 Functional tests. The requirements and tests in table II shall be inspected on a 100 percent basis. shall be conducted at
34、 the standard ambient temperature. All examinations and tests TABLE II FUNCTIONAL TESTS Clas si- fication 101. 102. 103. 104, 105. 106. Characteristic Battery power switching Malfunction . . (MALF) light di sable Battery drain light drive Battery low light drive MALF 1 signal Converter drive signal
35、Requi r erne nt 3.3.1.1 3.3.1.2 3. 3.1. 3 3.3.1.4 3.3.1.5 3. 3.1.6 Test Paragraph 4.6.2 4. 6. 3 4.6. 4 4. 6. 5 4. 6. 6 4. 6. 7 4. 4 Special sampling. The selection of samples shall be in accordance with section 7 of MIL-STD-105. 4. 4.1 General. One assembly shall be selected at random by a Governmen
36、t representative as a control sample from each 1 O0 produced. The control sample shall meet the requirements and tests in table III. TABLE III SPECIAL SAMPLING - GENERAL Classifi- Control Test Requirement Te s t P ar ag rap h cation 301. Fabrication 3.1 Applicable drawings - 302. General specificati
37、on 3.2 MIL-F-13926 - visual visual 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL - C - 50 7 4 O (MU ) 8 August 1973 4. 4.2 Environmental. Three assemblies shall be selected at random by a Government representative as a control sample from eac
38、h 50 produced or from each months production, whichever occurs first. The control samples shall meet the requirements and tests in table IV. TABLE IV SPECIAL SAMPLING - ENVIRONMENTAL Control Test Requirement Test Paragraph . Gla s s if i - cation 303. Storage t emperature 3. 3.2. 1 4. 6.8.1 304. Ope
39、rating t emperature 3. 3.2,2 4. 6. 8.1 305, Vibration 3. 3.2. 3 4.6.8.2 4. 4. 3 Acceptance and rejection. Rejected-lots shall be screened for all defective characteristics. Removal or correction of defective units and resubmittance of rejected lots shall be in accordance with the acceptance and reje
40、ction criteria specified in MIL-STD-105. 4. 5 Inspection equipment. Except as otherwise provided for by the contract, the contractor shall supply and maintain inspection equip- ment in accordance with the applicable requirements of MIL-1-45607. The inspection equipment listed in table V shall be uti
41、lized in per- forming the tests specified herein. 4.5.1 Government furnished inspection equipment. Where the con- tract provides for Government furnished inspection equipment, supply and - maintenance of inspection equipment shall be in accordance with the appli- cable requirements specified in MIL-
42、I- 45607. 4. 5. 2 Contractor furnished inspection equipment 4. 5. 2. 1 Government design, Unless otherwise specified in the con- tract, all inspection equipment specified by drawing number in specifications or SaAPs forming a part of the contract shall be supplied by the contractor in accordance wit
43、h applicable technical data listed in the TDP. 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-50740 12 M 7777706 0330445 5 m . MIL-C-50740 (MU) 8 August 1973 4. 5. 2. 2 Contractor design. The contractor shall design and supply inspection equ
44、ipment compatible with the test methods and procedures specified in 4. 6 of this specification and with the component inspection pro- cedures specified in examination and test facilities provisions of MIL-F- 13926. within 10 percent of the product tolerance for which intended, this inherent error in
45、 the inspection equipment design must be considered as part of the p r e s c rib e d p r o du c t to 1 e ran ce tim i t. dimensions, and tolerances used in the design of inspection equipment shall be so selected and controlled as to insure that the inspection equipment will reliably indicate accepta
46、bility of a product which does not exceed 90 percent of the prescribed tolerance limit and permit positive rejection when noncon- forming. ins pe c ti on equipm e nt . Since tolerance of inspection equipment is normally considered to be T hu s , con c e p t , con s t ru c t i o n, ma te ri a 1 s , C
47、onstruction shall, be such as to fa.cilitate routine calibration of TABLE V INSPECTION EQUIPMENT Item Nomenclature Description 1. DC power supply +7.:0. to. 331. O Vclc:, Ldjustable Ripple: 100 mV p-p - DC power supply I t24. O =t2. O Vdc Ripple: lo0 mV p-p - 3. DC power supply t5.0 fO.l Vdc 4. DC p
48、ower supply -6.0 fO.l Vdc 5. DC voltmeter Ripple: 25 mV p-p Ripple: 25 mV p-p O to 50 volts, accuracy of +.O. 1% - 4. 6 Test methods and Drocedures. 4. 6. 1 Test conditions. Unless otherwise specified, the test condi- tions shall be in accordance with the test f acilities provisions of MIL-F-13926.
49、4. 6. 1. 1 Initial conditions, Apply the loads, interconnection, and power to the assembly as specified in table I. 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL- G 50740(MU) 8 August 1973 4.6. 2 _Battery power switching- test. Apply the signal source specified in table I (item 3,.1), Set the voltage
