MIL-PRF-49404A(CR)
30 Hz to 20 KHz at the following frequencies: 30 Hz, 100 Hz, 1 KHz, 10 KHz, 20 KHz (see
4.5.2).
3.5.3. Output impedance. Output impedance shall be not greater than 0.1 ohm at a
bandwidth of 30 Hz < f < 20 KHz when measured per 4.5.3.
3.5.4 Output noise. Output noise voltage shall be not greater than 27 x 10-9 vrms/√Hz at
10 KHz, bandwidth ≤50 Hz, when tested per 4.5.4.
3.6 Environmental conditions.
3.6.1 Temperature shock. The Regulator shall not be damaged (see 6.3.1) by sudden
changes in temperature between -54 C and +95 C. (For verification, see 4.6.1).
3.6.2 High temperature. The Regulator shall not be damaged by storage to +95 C or
continuous operation to +71 C and shall operate for 30 minutes at +95 C. (For verification, see
4.6.2).
3.6.3 Low temperature. The Regulator shall not be damaged by operation to -54°C or
storage to -62 C. (For verification, see 4.6.3).
3.6.4 Shock. The Regulator shall not be damaged by high intensity shocks of 100 g's peak
amplitude with 11 milliseconds duration and the shocks resulting from bench handling
inspections. (For verification, see 4.6.4).
3.6.5 Vibration. The Regulator shall not be damaged by vibration over the frequency
spectrum at the specified g levels and amplitudes shown in Figure 1. (For verification, see 4.6.5).
3.7 Reliability. The Regulator shall have a mean time between failure (MTBF) of no less
than 5,400 hours, θo. (For verification, see 4.7).
3.8 Preconditioning. Each Regulator shall be subjected to at least a 20-cycle
preconditioning environment as specified in Figure 2 prior to Group A inspection. (For
exception to this requirement, see 6.2.g).
3.9 Coating. Unless otherwise specified, the Regulator, its parts and components shall be
first cleaned and coated with a corrosion resistant coating applied consistent with best
commercial practices which will ensure proper adhesion and surface protection under the full
range of environmental conditions described in this specification.
3.10 Soldering. Unless otherwise specified, electrical soldering shall conform to the
requirements of ANSI/IPC S-815A.
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