1、AMSC N/A FSC 5950 MIL-PRF-27/71E 28 April 2008 SUPERSEDING MIL-PRF-27/71D 21 February 2003 PERFORMANCE SPECIFICATION TRANSFORMERS, AUDIO FREQUENCY This specification is approved for use by all Departments and agencies of the Department of Defense. The requirements for acquiring the product described
2、 herein shall consist of this specification and MIL-PRF-27. FIGURE 1. Dimensions and configuration. INCH-POUND Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/71E 2 Inches mm Inches mm .005 0.13 .150 3.81 .030 0.76 .300 7.62 .031 0.79 .460
3、 11.68 .062 1.57 .495 12.57 .125 3.18 .500 12.70 CIRCUIT DIAGRAMS AND MARKING NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general information only. 3. Unless otherwise specified, tolerance is .010 (0.25 mm). 4. Part marking shall be on sides or top of case. 5. Electrical
4、values shall be marked as specified in table I, as applicable. FIGURE 1. Dimensions and configurations - Continued. Working voltage: 175 V Altitude : 70,000 ft maximum (See table I for value of “X”) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL
5、-PRF-27/71E 3 REQUIREMENTS: (When numbers in parentheses, i.e., (1-3) are used, they indicate the winding and the extreme terminals of the windings.) Electrical ratings: See table I. Working voltage: 175 volts. Frequency range: 300 hertz to 100 kilohertz (except 300 hertz to 20 kilohertz for M27/71-
6、01 and M27/71-02). TABLE I. Electrical ratings. Dash number Circuit diagram (see figure 1) Primary impedance ohms (1-3) Secondary impedance ohms (4-6) Primary DCR ohms 25% Primary power level At 300 Hz mW (Max) Secondary DCR ohms 25% Primary unbalanced DC current mA (Max) 01 02 03 04 05 06 07 08 09
7、10 11 12 A A A A A A A B A A B B 100 k CT 25 k CT 10 k CT 10 k CT 10 k CT 4,000 CT 1,000 CT 1,000 CT 600 CT 600 CT 600 CT 600 CT 1 k CT 1,000 CT 10 k CT 1,500 CT 600 CT 10 k CT 600 CT 4 25 k CT 600 CT 60 4 2,900 2,500 1,000 1,000 1,000 440 100 100 65 65 65 65 10 10 30 30 30 30 30 30 30 30 30 30 60 1
8、40 1,300 165 65 1,300 65 0.45 3,300 65 7 0.45 0 0 1.0 1.0 1.0 1.5 3.0 3.0 4.0 4.0 4.0 4.0 Design and construction: Dimensions and configuration: See figure 1. Duty cycle: Continuous. Case: Encapsulated. Material: Plastic. Terminals: Pin (printed circuit). Material: Nickel iron alloy tin plated. Diam
9、eter: 0.030 0.005 inch. Length: 0.500 0.030 inch. Weight: 5.10 grams, maximum. Altitude: 70,000 feet maximum. Operating temperature range: -55C to +130C. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/71E 4 Terminal strength: MIL-STD-202,
10、 method 211, test condition A, 2 pounds. Dielectric withstanding voltage: At sea level: 500 volts, rms. At barometric pressure: 300 volts, rms. Electrical characteristics: See table II. Frequency response: Reference frequency: 1 kilohertz. Polarity: Additive, with terminals 3 and 4 connected. TABLE
11、II. Electrical characteristics. Frequency response at 300 Hz to 100 KHz 2 dB Dash number ZS(1-3) ohms ZL (4-6) ohms ELVolts Primary DC current (1-3) mA 01 1/ 02 1/ 03 04 05 06 07 08 09 10 11 12 100 k 25 k 10 k 10 k 10 k 4,000 1,000 1,000 600 600 600 600 1,000 1,000 10 k 1,500 600 10 k 600 4 25 k 600
12、 60 4 17 3 10 10 10 5 3 3 2.5 2.5 2.5 2.5 0 0 0.5 0.5 0.5 0.25 1.5 1.5 2 2 2 2 1/ Frequency response is 300 hertz to 20 kilohertz 2 dB. VERIFICATION: Qualification inspection: Not applicable. Quality conformance inspection: Groups A and B tests of MIL-PRF-27 shall be applicable. Marking location: Se
13、e figure 1. Part or Identifying Number (PIN): M27/71-(dash number from table I). Substitution data (information only): This military transformer is substitutable for CAGE 70674, PIN 324-6A. This in no way implies that the manufacturers part is substitutable for the military item. This information is
14、 not intended to be complete. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/71E 5 Changes from previous issue. The margins of this specification are marked with vertical lines to indicate where changes from the previous issue were made.
15、This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to t
16、he last previous issue. Referenced documents. In addition to MIL-PRF-27, this document references the following: MIL-STD-202 Custodians: Preparing activity: Army - CR DLA - CC Navy - EC Air Force - 11 (Project 5950-2008-013) DLA - CC Review activities: Army - AR, CR4, MI Navy - AS, MC, OS, SH Air Fo
17、rce - 19, 99 NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of this information above using the ASSIST Online database at http:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
