AHF1
126
TIP (AHF1)
SWITCHES
ECO-FRIENDLY SWITCHES
FEATURES
An eco-friendly switch-replacing a mercury switch with steel ball inside
High corrosive gas resistance-sealed construction by O ring assures high
contact reliability
ORDERING INFORMATION
Vertical mounting type Part number Horizontal mounting type Part number
AHF11
AHF12
Steel ball
PC
board
TYPICAL APPLICATIONS
• For detection of tip
Gas heaters
Electric air conditioners
Electric fans
• For criminal detection
Vending machines
Public phones
Ammusement equipments
SPECIFICATIONS
1. Contact rating
0.1A 30VDC
Applicable range: 1mA 5VDC to 0.1A 30VDC
2. Characteristics
3. Operating characteristics
Expected electrical life
(Min. operations) 0.1A 30VDC resistive Min. 5
×
10
3
1mA 5VDC resistive Min. 10
6
Insulation resistance Min. 100 m at 500 VDC
Dielectric strength 100 Vrms for 1 min.
Vibration resistance 2.9 m/s
2
{0.3G} 40 to 400 Hz for 7 days 5 to 10 Hz at double amplitude of 10 mm, 5
×
10
5
cycles
Shock resistance 588 mm/s
2
{60G}, 6 directions, 3 times/each direction
Ambient temperature –25
°
C to +85
°
C, –13
°
F to +185
°
F
(not freezing below 0
°
C 32
°
F)
Ambient humidity Max. 85%RH
Initial contact resistance Max. 100 m
(by voltage drop, 0.1A 6 to 8 VDC)
Operating angle
(angle of turning off the circuit)
Goes off at more than 25 and less than 60
degrees in relation to the reference line (with
an operation angle of 6 degrees/second in the
X and Y directions)
Release angle
(angle of turning on the circuit) Goes on at 20 degrees or more (in the X and
Y directions)
AHF1
127
DIMENSIONS
VERTICAL MOUNTING TYPE
mm inch General tolerance
±
0.25
±
.010
3.6
.142
Support terminal
of P.C board
Datum line
0.5
.197
Terminal width 0.9 .035
Terminal #1
Terminal #3
11.3
.445 11.3
.445
2-C1.0
14.250.3
.5595.012
12.250.15
.4805.004
13.250.15
.5205.004
PC board pattern Schematic
12.250.1
.4805.004
14.250.1
.5595.004
13.250.1
.5205.004
4-1.350.1
4-.051 Dia. hole
Dia. hole
5.004
1
3
HORIZONTAL MOUNTING TYPE
24
31
18.5
.728
5.0 .197
21.6
.850
Datum line
12.250.15
.4805.006
22.650.15
.8905.006
PC board pattern
12.250.1
.4805.004
22.650.1
.8905.004
4-1.350.1
4-.051 Dia. hole
Dia. hole
5.004
Schematic
12
34
NOTES
1. Soldering operations
1) for manual soldering
Soldering should be accomplished in less
than 8 seconds with a 60 watt iron max.
(iron tip temperature: Max. 350
°
C 662
°
F)
2) For automatic soldering
Soldering should be done less than 10
seconds in 260
°
C 500
°
F solder bath or
less than 3 seconds in 350
°
C 662
°
F sol-
der bath.
2. Environment
Avoid using and keeping switches in the
following conditions.
• In corrosive gases
• In a dusty environment
• Where silicon atmosphere prevails
3. Quality check under actual loading
conditions
To assure reliability, check the switch un-
der actual loading conditions.
4. Recommended circuit for tip
Contact chattering may happen when vi-
bration or shock is applied to the switch
because of a leaf spring and steel ball in-
side. Please detect a signal by following
procedure.
1) Read access by a microcomputer
should be done every 30 msec. at 1mA
5VDC.
2) Two reading 'open' in succession
should be judged as 'open' condition.
3) After the judgement, if the 'open' condi-
tion continues for more than 0.5 sec., the
condition should be confirmed lastly.
<Example>
Microcomputer read access
5. Others
• Switch cover is set to the body through
O-ring for sealing purpose. Do not disas-
semble the switch or the characfteristics
may change.
• For switching of inductive loads (relay,
solenoids, buzzars, etc.), in order to pre-
vent damage to contacts due to the occur-
rence of arcing, an arc absorbing circuit
should be applied.
Tip SW
30ms
close
open
Judge
as
“open”
More than 0.5 sec.
confirm as “open”
