137
Solid-state Timer
H3FA
DIP Model Timer for PC Board Use
Provides Contact and Solid-state
Output
Four rated times available:
models suffixed -A and -SA: 1 s, 10 s, 1 min, 10 min;
models suffixed -B and -SB: 6 s, 60 s, 6 min, 60 min.
Timer operation may also be controlled through an
external variable resistor.
Timer can be cleaned while mounted on a PC
Board.
Twenty-four-pin IC socket can be used for
mounting the time unit.
Mountable on a 1-inch pitch rack.
Pulse output types also available.
RC
Ordering Information
Operation/resetting system
Time-limit contact
Time range
Surface mounting (with IC socket
or direct mounting on PC Board)
Time-limit operation/power-OFF resetting
and external resetting/
Contact output
(SPST NO + SPST NC)
1 s to 10 min
H3FA-A
and external resetting/
Integrating operation/power-OFF resetting
(SPST-NO + SPST-NC)
6 s to 60 min
H3FA-B
Integrating operation/power OFF resetting
and external resetting
OFF-delay operation by external signal/
Solid-state output
1 s to 10 min
H3FA-SA
OFF-delay operation by external signal/
power-OFF resetting
6 s to 60 min
H3FA-SB
Instantaneous operation/time-limit resetting
d
t
l
tti
(
l
t
t)
Contact output
(SPST NO
SPST NC)
1 s to 10 min
H3FA-AU
p
/
g
and external resetting (pulse output)
p
(SPST-NO + SPST-NC)
6 s to 60 min
H3FA-BU
Solid-state output
1 s to 10 min
H3FA-SAU
6 s to 60 min
H3FA-SBU
Note:
1. Specify both the model number and supply voltage when ordering.
2. The desired operation/resetting system is selected by short-circuiting and opening the specified terminals.
Specifications
Time Ranges
Model
Rated time
Time setting range
H3FA-A
1 s
0.1 to 1 s
H3FA-AU
10 s
1 to 10 s
H3FA-SA
1 min
0.1 to 1 min
H3FA-SAU
10 min
1 to 10 min
H3FA-B
6 s
0.6 to 6 s
H3FA-BU
60 s
6 to 60 s
H3FA-SB
6 min
0.6 to 6 min
H3FA-SBU
60 min
6 to 60 min
Note:
1. The above timing range applies to when the internal variable resistor of H3FA is used.
2. The external variable resistor may also be used by opening the terminals connected to the internal variable resistor.