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Relays, Reed (Mercury Wetted) General Specification For
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Table II. Group A inspection.



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MIL-R-83407B
TABLE I. First article inspection. 1/
Number of
Examination or test 2/
Requirement
Test
Number of
failures
paragraph
paragraph
sample
permitted
relays to inspect
Group I
2
4.5.23
3.29
0
Screening (when specified) (see 3.1) ------
2 1/
4.5.2
3.5
Solderability --------------------------------------
Visual and mechanical examination
4.5.1
3.1, 3.3, 3.4,
(external) ------------------------------------------
3.26, and 3.30
4.5.3
3.6
Dielectric withstanding voltage --------------
All relays
4.5.4
3.7
Insulation resistance ---------------------------
in sample
4.5.5
3.8
1
DC coil resistance ------------------------------
( 11 total 3/ )
4.5.6
3.9
Pickup and dropout voltage ------------------
4.5.7
3.10
Coil power dissipation (when specified) ---
4.5.8
3.11
Contact resistance -----------------------------
4.5.9
3.12
Operate and release time --------------------
4.5.10
3.13
Coil inductance (when specified) -----------
4.5.11
3.14
Contact noise (when specified) -------------
 2 1/
4.5.12
3.15
Thermal EMF (when specified) --------------
4.5.13
3.16
Capacitance (when specified) ---------------
Group II
Thermal shock (high and low temperature
4.5.14
3.17
operation) -----------------------------------------
4.5.15
3.18
Shock (specified pulse) (nonoperating) ---
1
3
4.5.16
3.19
Vibration (nonoperating) ----------------------
4.5.17
3.20
Moisture resistance (when specified) ------
Visual and mechanical examination
4.5.1
3.1, 3.3, 3.4
(external) ------------------------------------------
3.26, and 3.30
Group III
4.5.18
3.21
Magnetic interference -------------------------
1
3
4.5.19
3.22
Resistance to soldering heat ----------------
4.5.20
3.23
Salt spray (corrosion) -------------------------
4.5.21
3.24
Terminal strength ------------------------------
Group IV
0
4
4.5.22
3.25
Life -------------------------------------------------
1/ Select the specified number of relays at random from the 11 sample units.
2/ A test procedure (e.g., dielectric withstanding voltage) required at the conclusion of a procedure shall be
known as a post-test of that procedure. Some post-tests are required to be repeated on sample units as
post-tests for more than one test procedure. At the option of the manufacturer, such post-testing shall be
required only at the conclusion of the life test.
3/ One additional sample unit is included in each sample of 11 sample units to permit substitution for the
failures allowed in group I.
7

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