MIL-DTL-15098E
4.6.10.1 End of useful life. End of useful life is defined as the time at which the
following changes occur, as applicable:
a. Circuit components - When starting voltage exceeds the specified initial maximum
value by 5 volts.
b. Standard brightness indicators - Decrease in light output to 50 percent of the initial
value.
c. High brightness indicators - Starting voltage equals the nominal circuit voltage
(see 3.1).
4.6.11 Electrode glow (see 3.17). Indicator lamps with a W11 electrode shape shall have
a minimum initial corona coverage of 30 percent of the electrode length (see 3.1), when operated
at rated current and voltage for 1 minute. The 30 percent minimum corona coverage shall begin
within 0.0394 inch (1 mm) from the electrode tips (as shown on figure 6) and shall be continuous
on each electrode when viewed as shown on figure 7.
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as
specified in the contract or order (see 6.2). When packaging of materiel is to be performed by
DoD or in-house contractor personnel, these personnel need to contact the responsible packaging
activity to ascertain packaging requirements. Packaging requirements are maintained by the
Inventory Control Point's packaging activities within the Military Service or Defense Agency, or
within the military service's system commands. Packaging data retrieval is available from the
managing Military Department's or Defense Agency's automated packaging files, CD-ROM
products, or by contacting the responsible packaging activity.
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful,
but is not mandatory.)
6.1 Intended use. The lamps covered by this specification are intended for use in
indicating and circuit control functions.
6.2 Acquisition requirements. Acquisition documents should specify the following:
a.
Title, number, and date of this specification.
b.
Applicable specification sheet (see 3.1).
c.
Part number of required lamp (see 3.1 and 6.7).
d.
Whether external resistor will be furnished with the lamp (see 3.1 and 3.4).
e.
Marking (see 3.1 and 3.18).
f.
First article inspection, if required (see 3.2).
g.
AQL (see 4.4.1.2).
h.
Group B lot sampling schedule for conformance testing, if required (see 4.4.1.3
and 6.3).
g.
Packaging requirements (see 5.1).
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