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MIL-PRF-28776


Relays, Hybrid, Established Reliability, General Specification for (w/Amendment 2) FSC: 5945

This specification establishes the general requirements for relays that use a combination of solid state circuit input elements functioning with an electro-mechanical relay that performs the switching functions associated with control system applications (see 6.1). These relays are designed to operate in low and medium power switching circuits with contact ratings up to 1 ampere alternating current (ac) or direct current (dc). The failure rate level is established at a confidence level of 90 percent for qualification and 60 percent for maintenance of qualification based on 100,000 cycles at +125°C under rated load conditions specified herein. Excludes time delay relays. CAUTION: The use of any coil voltage less than the rated coil voltage will compromise the operation of the relay. CAUTION: Pick-up, hold, and dropout voltages are for test purposes only and are not to be used as design criteria.



Points of Contact:

Relay Group Phone: 614-692-YYYY Email: Relay@dla.mil
Document Downloads

Relays, Hybrid, Established Reliability, General Specification for (w/Amendment 2) Revision: K, Dated: 10 December 2025 File Name: prf28776.pdf, File Size: 880 kb


List of Associated Specifications for MIL-PRF-28776J.
Dated: 10 December 2025
File name: prf28776sup.pdf, File Size: 68 kb

Relays, Hybrid, Established Reliability, DPDT, Low-Level to 1.0 Ampere (Transistor Driven) (Electromechanical Output)
Dated: 06 July 2020
File name: prf28776ss1.pdf, File Size: 199 kb

Relays, Hybrid, Established Reliability, DPDT, Low-Level to 1.0 Ampere (Sensitive Coil Operate Power at 25C) (Transistor Driven) (Electromechanical Output) with Diode Coil Supression
Dated: 08 June 2015
File name: prf28776ss3.pdf, File Size: 101 kb

Relays, Hybrid, Established Reliability, SPDT, Low-level to 1.0 Ampere (Sensitive Coil Operate Power at 25°C) (Transistor Driven) (Electromechanical Output) with Diode Coil Suppression
Dated: 11 September 2025
File name: prf28776ss4.pdf, File Size: 116 kb

Relays, Hybrid, Established Reliability, SPDT, Low-Level to 1.0 Ampere (Transistor Driven) (Electromechanical Output) with Diode Coil Suppression
Dated: 16 September 2025
File name: prf28776ss5.pdf, File Size: 108 kb

Relays, Hybrid, Established Reliability, DPDT, Low Level to 1.0 Ampere Internal MOSFET Driver with Zener Diode Gate Protection (Electromechanical Output) Diode Coil Suppression and Terminals with 0.100 Grid Lead Spacing
Dated: 28 June 2021
File name: prf28776ss6.pdf, File Size: 98 kb

Relays, Hybrid, Established Reliability, DPDT, Low Level to 1.0 Ampere (Sensitive Coil Operate Power at 25°C), Internal MOSFET Driver with Zener Diode Gate Protection (Electromechanical Output) Diode Coil Suppression and Terminals with 0.100 Grid Lead Spacing
Dated: 16 June 2021
File name: prf28776ss7.pdf, File Size: 100 kb

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