VF7-41F11 Datasheet, PDF (23/252 Pages) Tyco Electronics – Automotive Relays and Switching Modules

Automotive Relays and Switching Modules
Application Notes
Glossary
Catalog 1308028-2
Revised 3-2008
N
NC contact (normally closed)
→ Same as break contact. The break contact is closed
in the → release (rest) state of a → monostable relay
and opens (breaks) when the armature moves to the
core (→ operate state).
Nip-off pin
Removable locking pin of a relay cover ventilation
hole. Due to the used plastic materials, an open vent
hole is usually not needed for our relays. However,
certain extreme ambient/load conditions can generate
noxious gases (diffusion, arc ionization) or over-
pressure (during SMD soldering) inside a relay, making
a gas exchange with the atmosphere desirable.
NO contact (normally open)
→ Same as make contact. Contact is open in the
→ release (rest) state of a → monostable relay and
closes (makes) when the relay coil is energized
(→ operate state).
Nominal values (power consumption, voltage)
See → rated values.
Non-operating current/voltage
Coil current/voltage at which an individual relay does
not operate.
Non-release current/voltage
Coil current/voltage at which a → monostable relay
does not release.
O
Operate
Relay switching process from the release state
(→ NC closed) to the operate state (→ NO closed).
Operate state
Switch position of an energized → monostable relay.
Fig. 4
Operate time
Time from energizing the relay coil till the first break
of the → NC contact or the first make of the → NO
contact. See → relay time characteristics, fig. 4. The
operate time is given as a typical value within each
section “coil data” in this databook. As the coil resis-
tance depends on the ambient temperature, the
operate time varies with the operate voltage and the
ambient temperature. For principal behavior see fig. 5.
Fig. 5
Overload current
This test is done to make sure, that our relays with-
stand overload conditions, e.g. withstand short circuit
conditions until the fuse opens. Current and time are
compatible to circuit protection by a typical auto-
motive fuse according to ISO 8820-3 (2002) as shown
in the table below. Relay will carry the specified
currents at 23°C (Irated = rated current as given in
contact data section for each relay).
Test
Current in A
6.00 * Irated
3.50 * Irated
2.00 * Irated
1.35 * Irated
1.10 * Irated
Operating time in seconds
Minimum
Maximum
0.02 s
0.08 s
0.25 s
0.75 s
100 h
0.20 s
0.50 s
5.00 s
1800 s
No requirement
Table 3
Operate current/voltage/power
Coil current/voltage/power at which a relay operates.
Operation
In tests, a whole switching cycle including energizing
and de-energizing of the relay coil.
P
The times given in this catalog are for 12 V coil voltage
and RT, without any devices in parallel to the relay coil.
PCB
Common abbreviation for printed circuit board.
PIP
Abbreviation for → pin-in-paste
All specifications subject to change. Consult Tyco Electronics for latest specifications.
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