1、MIL-C-14877 12 m 777770b 043108 5 m - MIL-C-14877 (MU) 2 March 1970 MILITARY SPECIFICATION CIRCUIT CARD ASSEMBLY: 10559325 (POWER SUPPLY, LOW VOLTAGE) 1. SCOPE 1.1 This specification covers one type of electronic assembly known as Circuit Card Assembly: 10559325, (Power Supply, Low Voltage) (see 6.1
2、). 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 speci- fication to the extent specified herein. SPECIFICATIONS Military MIL- F- 1 3 926 -*e MIL-P- 14232 MIL-1-45607 Fire Control Materiel; Gener
3、al Specification Governing the Manufacture and Inspection of Parts, Equipment and Tools for Army Materiel: Packaging and Packing of Inspection Equipment, Supply and Maintenance of STANDARDS Military MIL-STD- 1 O5 -MIL-STD- 1 O9 *.:MIL-STD;8.1 O Sampling Procedures and Tables for Inspection by Attrib
4、utes Quality Assurance Terms and Definitions Environmental Tes t. Methods DRAWINGS U S Army, Frankford Arsenal Floc59325 Circuit Card Assembly - Power 1 Supply, Low Voltage - FSC 1240 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-14877 12 M 7
5、779706 0431807 7 3.1 Fabrication. - The circuit card.assembly shall be man- ufactured in accordance with Drawing F10559325 and drawings per- taining the re to . 3.2 General specification. - The circuit card assembly shall meet the following requirements, where applicable of MIL-F-13926: MIL -C - 148
6、7 7 (MU) PACKAGING DATA SHEET 10559325 I Packaging of Circuit Card Assembly - (Power Supply, Low Voltage): 10559325 (Capies of specifications, standards drawings and packaging data sheets required by suppliers in connection with specific procurement functions should be obtained from the procuring ac
7、tivity or as directed by the contracting officer. ) (a) Order of precedence (b) Dimensions and tolerances (c) Part identification and marking 3.2.1 Electronic workmanship. - The circuit card assembly shall meet the workmanship requirements of Drawing F10559325 and drawings pertaining thereto-. 3. 3
8、Performance. - Unless otherwise specified, the circuit card assembly shall meet the performance requirements of this specification at standarod ambient temperatures between 60 degrees Fahrenheit (OF) and 90 F. 3.3.1 Loads and power. - The circuit card assembly shall- auxiliary equipment, perform as
9、specified herein when the loads and power of Table I are applied as specified, 2 I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABLE I MIL-C-14877 (MU) TEM I. 1 1.1 I. 1.2 . 1. 3 1.4 I. 2 I. 2. 1 2.2 2. 3 L. 24 3 1. 4 P 4, I. CONDITION Loads : Fu
10、ll load: Re sistor Re sis tor Resistor Resistor Reduced load: Resistor Re sis tor Re sistor Resistor Re sis tor Capacitor (4 required) Power source: Auxiliary equipment: -. -. CHARACTERISTICS Ohms (A573 3. 9 51 13 27 O 7. 8 1 o2 26 540 1800 . 1 PF i20% (ceramic) 17 to 31 Vdc adjustable Preregulator
11、switch drive circuitry as shown on Figure 1, or equivalent 3 CONNECT IONS Connected be - tween the follow ing pins of P1 15A and 16B 33A and 16B 14B and 36B 32B and 16B 15A and 16B 33A and 16B 14B and 36B 32B and 16B 10B and 5A 32B and 16B 15A and 16B 33A and 16B 14B and 36B Applied between P1-4B (i
12、-) and P1-36B (-) Connected to P1 as shown on Figure 1 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-L flIL-C-14B77 12 W 7377706 04311L 5 MIL - C - 1487 7 (MU) I O O 9 M z 4 O O 9 M z 4 u1 Il I! Q 3 M Q s 4 Provided by IHSNot for ResaleNo reproduct
13、ion or networking permitted without license from IHS-,-,-MIL-C-LLI877 12 7779706 0431812 7 W P MIL- C - 14877 (MU) 3. 3. 1. 1 Full-load output voltage and ripple. - With the input voltage at P1-4B set to 24 i2 Vdc and with the full-load operating con- ditions specified-in Table I (item 1, i), the ou
14、tput and ripple voltages at the output terminals shall be as specified in Table II. TABLE II IOUTPUT (Pins of Pi) 14B 15A 3 3A 32B OUTPUT VOLTAGE (Vdc) i5 *l. 2 5, 1 *o. 5 -6 *O. 75 29 *2. 5 RIPPLE VOLTAGE (Volts p-p) o. 9 o, 5 o. 7 2. o 3, 3. 1. 2 Reduced-load output voltage, - With the input volta
15、ge at P1-4B set to 24 *2 Vdc and the reduced-load operating conditions specified in-Table I (item 1 2), the d-c voltage at the output terminals shall be as specified Table II. 3, 3. 1. 3 FuI1-load input/output voltage regulation. - With the full-load operating conditions specified in Table I, the ou
16、tput voltage at P1-14B (t15 Volts) shall not vary more than *O. 5 Volt for an input voltage variation of 18 to 30 Vdc at P1-4B. 3. 3. 1. 4 Sync signal. - With ap input voltage of 24 *Z Vdc at. P1-4B and the full-load operating conditions specified in Table I, the output between P1 -lOB and P1-5A sha
17、ll be a square wave having an amplitude of 9. 2 *l. 5 Volts p-p at a frequency of 10 kHz *30%. 3.3. 2 Environm-ental. 3. 3. 2, 1 Storage temperature. - The circuit card assembly shall meet the requirements of 3. 3. 1 at ambient temperature (60F to 9OoF) after exposure and thermal stabilization at -8
18、0F and t160F. 3. 3, 2, 2 Operating temperatures. - The circuit card assembly shall meet the requirements of 3. 3. 1 while exposed to and thermally stabilized at -403F and t125OF, subsequent to which it shall meet the above requirements at ambient temperature (6OOF to 9OOF). 5 Provided by IHSNot for
19、ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-LY77 12 777770b 043LL3 7 M MIL-C - 14877 (MU) 3.3.2.3 Vibration. - The circuit card assembly shall show no physical failure and shall meet the requirements of 3, 3. 1 after being exposed to the following vibratory condi
20、tions: (a) Amplitude : O. 5 inch maximum (b) Acceleration: 4g maximum (c) Crossover frequency: 12.5 Hz (d) Sweep time: 5 to 500 to 5 Hz in 15 minutes. Two sweeps in each of three mutually perpendicular axes 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. - Unless otherwise speci-
21、fied in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified, the supplier may utilize his own or any other facilities suitable for the performance of the inspection requirements specified he
22、rein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.1.1 General provisions. - The component and
23、 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-STD-109. Definitions of inspection 4.2 First article (initial production) approval. - The require- ment for first article approval and the respon
24、sibility (Government or contractor) for first article testing shall be as specified in the contract The sample for first article approval tests shall consist of three cir- cuit card assemblies. The sample shall be manufactured in the same manner, using the same materials, equipment, processes, and p
25、ro- cedures as used in regular production. including packaging and packing, shall be obtained from the same source of supply as used in regular production. All parts and materials, 4.2.1 Government testing. - When the Government is respon- sible for conducting first article approval tests, the contr
26、actor, prior to submitting the sample to the Government, shall inspect the sample to insure that it conforms to all the requirements of the contract and submit a record of this inspection with the sample, including certi- ficates of conformance for materials. 6 I Provided by IHSNot for ResaleNo repr
27、oduction or networking permitted without license from IHS-,-,-MIL-C-1q77 12 7777906 043LBLq O MIL - C- 1487 7 (MU) 4.2.2 Contractor testing. - When the contractor -is responsi- ble for conducting first article approval tests, the sample shall be inspected by the contractor for all the requirements o
28、f the contract. The sample and a record of this inspection, including certificates of conformance for materials, shall be submitted to the Government for approval. tors inspection. The Government reserves the right to witness the contrac- 4.3 - Inspection provisions. 4.3.1 Submission of product - Un
29、less otherwise specified by the contracting officer, inspection lot size, lot formation and pre- sentation of lots shall be in accordance with “Submission of Product“ provisions of MIL-STD- 105 4.3.2 Examination and tests . 4.3.2. I Components and subassemblies. - All components and subassemblies sh
30、all be inspected in accordance with he inspection provisions contained in Supplementary Quality Assurance 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 Final acceptance inspection
31、. - Subsequent to first article approval, examination and tests related to Section 3 herein shall be performed on a single defect (individual characteristic) basis in accordance with MIL-STD-105 and the sampling plans specified in Tables III, IV, and V herein. and marking shall be in accordance with
32、 MIL-P-14232 and Section 5 herein. The tabulated classification of defects in Table III, IV, and V shall constitute the minimum inspection to be performed by he supplier after first article approval and prior to Government accept- ance or rejection by item or lot. Examination and test for packaging
33、4.3.2.3 Functional tests. - The requirements and tests in All examinations and Table III shall be inspected on a 100% basis. tesots shall be conducted at the standard ambient temperature (60 to 90 FI. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,
34、-MIL-C-L4877 12 = 7779706 043LBL5 2 MIL- C - 1487 7 (MU) TABLE III (10070 inspection) CHARACTERISTIC REQUIREMENT TEST PROCEDURE 101. Full-load output voltage 3.3.1. 1 4. 6.2 102. Reduced load output 3.3. 1.2 4. 6. 3 103. Full-load input/output 3.3; 1.3 4. 6.4 104. Sync signal 3.3. 1.4 4. 6. 5 and ri
35、pple voltage voltage regulation 4. 3. 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 accord- ance with “Acceptance and Rejection“ as specified in MIL-STD- 105. 4.
36、4 Special sampling. 4. 4. 1 General. - One circuit card assembly shall be selected at random by a Government representative as a control sample from each 100 produced. The control sample shall meet the requirments and tests in Table IV. TABLE IV CONTROL TEST REQUIREMENT TEST PROCEDURE 301. Fabricati
37、on 3.1 Applicable drawings - 302. General specification 3.2 MIL-F-13926- Visual Visual 4. 4.2 Environmental. - Three circuit card assemblies shall be selected at random by a Government representtive as a control sample from each 50 produced or from each months production, whichever occurs first. men
38、ts and tests in Table V. The control samples shall meet the require- . -, 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-14877 12 777770b 043181b 4 W MIL - C - 1487 7 (MU) TABLE V CONTROL TEST REQUIREMENT TEST - PROCEDURE 303. Storage temper
39、a- 3.3.2.1 ture pe ratur e 304. Operating tem- 3.3.2.2 . 305. Vibration 3.3.2.3 4.6.6.1 4,6.6.1 4.6.6.2 4.4.3 Failure of sample, - Should any one item of a special sampling fail to meet the specified test requirements, acceptance of the product shall be suspended by the Government until necessary co
40、rrections have been made by the contractor and the resubmitted item has been approved (see 4.3.3). 4.5 Inspection equipment. - Except as otherwise provided for by the contract, the contractor shall supply and maintain inspection equipment in accordance with the applicable requirements 45607. of-MIL-
41、 I- 4.5. l Government furnished inspection equipment. - Where the contract provides for Government furnished test equipment, supply and maintenance of test equipment shall be in accordance with the applicable requirements specified in MIL-1-45607. 4.5.2 Contractor furnished inspection equipment. 4.5
42、.2.1 Government design. - Unless otherwise specified in the contract, ,all inspection equipment specified by drawing number in specifications or SQAP forming a part of the contract shall be supplied by the contractor in accordance with applicable technical data listed in the technical data package (
43、TDP). 4.5.2.2 Contractor design. - The contractor shall design and supply inspection equipment compatible with the !Test Methods and Procedures“ specified in 4.6 of this specification and with the com- ponent inspaction procedures specified in “Examination“ and “Test Facilities requirements of MIL-F
44、-13926. Since tolerance of test equipment is normally considered to be within 10% of the product tolerance for which it is intended, this inherent error in the test equipment design must be considered as part of the prescribed product tolerance limit. Thus, concept, construction, materials, dimensio
45、ns, 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-1477 LE 7777Ob 043LL b MIL - C - 14877 (MU) and tolerances used in the design af test equipment shall be so selected and controlled as to insure that the test equipment will reliably indi- c
46、ate acceptability of a product which does not exceed 90% of the pre- scribed tolerance limit and permit positive rejection when noncon- forming. Construction shall be such as to facilitate routine calibra- . tion of test equipment, 4. 5, 3 Test equipment. - In conjunction with 4. 5. 2, the standard
47、test equipment listed in Table VI shall be utilized in per- forming the applicable test of 4. 6. 1. 2. 3. 4. TABLE VI NBMENCLA TURE DESCRIPTION D - C Powe r Supply 17 to 31 Vdc, adjustable Ripple: Source impedance: SO. O1 ohm O. 1 Volt rms maximum D - C Voltmeter 0-50 Volts, accuracy of 11% Oscillos
48、cope Frequency response: d-c to 500 kHz Input impedance: 1 megohm or greater Sensitivity: 5 mV/cm Sweep time: O. 2 ps/cm e qui vale nt Preregulator Switch Drive As specified on Figure 1, or 4. 6 Test methods and procedures, - 4. 6. 1 Test conditions. - Unless otherwise specified, the test conditions
49、 shall be in accordance with the “Test Facilities“ require- ments of MIL-F-13926. 4, 6. 1. 1 Initial conditions, - Connect the power source and L auxiliary equipment to the circuit card assembly as specified in Table I. Unless otherwise specified, set the voltage of the power source to 24 t2 Vdc. specified in Table I for full-load operation. ripple at P1-14B, P1-15A,
