Standard Keypads
SerieS 82
lightable
FeatureS
•
11
/
16
" Between Button
Centers
• Long, Stroke, Wiping Contact
• Lightable Modules
• Choice of 5 Circuitries with
Unlighted Modules
• User Legendable
lightable modules
unlighted modules
Keyboards and Keypads
mounting
Build a custom keyboard with identical button
distances no matter how you stack them.
Designed to plug into any printed circuit
board from
1
/16" to
1
/8" thick, modules stack
in any configuration, maintaining
11
/16" button
centers.
For Lightable Modules which will be continuously
lit, mixing ver tically mounted modules
with horizontally mounted modules is not
recommended; the orientation of the rectangular,
lighted area will differ. See drawings.
See Figure 1 Panel Cutout diagram for 6 button
module mounting dimensions. Refer to drawings
for other module dimensions.
C
L
.531
(13,49)
SQ.
C
L
.687 (17,45)
.687 (17,45)
.687
(17,45)
.343
(8,71)
Figure 1 Panel mount Cutout Diagram
lightaBle moDuleS
light Source and lamp mounting
Each lightable button fits over a T-1 size LED or
incandescent lamp mounted to PC board (see
Figure 2-2a). The height of the lamp should not
exceed .250" (6,35 mm) from the surface of the
board. (Note: Grayhill does not manufacture or
sell LED's or incandescent lamps).
For easy light replacement, mount the lamp or
LED through the back or solder side of the board
(see Figure 2). This method of mounting allows
you to replace light source without removing
the keyboard module. The other method of
light mounting (Figure 2a) requires desoldering
the keyboard module then desoldering the
lamp when it's necessary to replace the light
source.
The chart below lists ratings for a size T-1
incandescent lamp. To extend the life of the lamp,
use an alternating current and reduced voltage.
The chart also lists maximum temperatures the
module can withstand. For higher temperatures,
Grayhill offers modules made of special plastics,
polyester switch housing and polycarbonate
internal button. All measurements were
determined under laboratory conditions.
(Mounted model continuously lit in temperature
controlled oven with continuously circulating air
for 24 hours.)
incandescent lamp–Size t-1
lamp
number*
715
680
intensity and
mean Spherical
Candle Power
Volts
Service
life
Current
in hours Per lamp
40,000
100,000
115 mA
60 mA
maximum
allowable
ambient
temperature
130°F
150°F
max, temp.
for modules
With Special
Plastics
200°F
220°F
Bright .15 MSCP 5 V
Moderate .03 MSCP 5 V
*Lamps not available from Grayhill.
.250
(6,35)
MAX.
Figure 2
Easy replacement
mounting
.170 (4,32)
Figure 2a
Mounted from
component side
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Standard Keypads
DimenSionS
in inches (and millimeters)
.683 + .005 – .010
(17,35 + 0,13 – 0,25)
.750 ± .025
(19,05 ± 0,64)
.450 ± .010
(11,43 ± 0,25)
.750 ± .025
(19,05 ± 0,64)
.450 ± .010
(11,43 ± 0,25)
.683 + .005
– .010
(17,35 + 0,13
– 0,25)
.500 + .010 – .005
(12,7 + 0,25 – 0,13)
SQ. TYP.
.408 ± .005
(10,36 ± 0,13)
SQ. TYP.
.125 ± .005
(3,18 ± 0,13)
.030 ± .002
(0,76 ± 0,05)
DIA. TYP.
.168 ± .010
(4,27 ± 0,25)
.125 ± .005
(3,18 ± 0,13)
.030 ± .002
(0,76 ± 0,05)
DIA. TYP.
.168 ± .010
(4,27 ± 0,25)
Keyboards and Keypads
unlighted
.750 ± .025
(19,05 ± 0,64)
.450 ± .010
(11,43 ± 0,25)
lightable
1.370 + .005 – .010
(34,80 + 0,13 – 0,25)
.687 ± .005
(17,45 ± 0,13)
.683 + .005
– .010
(17,35 + 0,13
– 0,25)
.500 + .010 – .005
(12,7 + 0,25 – 0,13)
SQ. TYP.
.408 ± .005
(10,36 ± 0,13)
SQ. TYP.
.125 ± .005
(3,18 ± 0,13)
.030 ± .002
(0,76 ± 0,05)
DIA. TYP.
.168 ± .010
(4,27 ± 0,25)
unlighted (only)
.750
±
.025
(19,05
±
0,64)
.450
±
.010
(11,43
±
0,25)
.750
±
.025
(19,05
±
0,64)
.450
±
.010
(11,43
±
0,25)
2.057 + .005 – .010
(52,25 + 0,13 – 0,25)
.687
±
.005
(17,45
±
0,13)
.683 + .005
– .010
(17,35 + 0,13
– 0,25)
.500 + .010 – .005
(12,7 + 0,25 – 0,13)
SQ. TYP.
.408
±
.005
(10,36
±
0,13)
SQ. TYP.
.125
±
.005
(3,18
±
0,13)
.030
±
.002
(0,76
±
0,05)
DIA. TYP.
.168
±
.010
(4,27
±
0,25)
.125
±
.005
(3,18
±
0,13)
.030
±
.002
(0,76
±
0,05)
DIA. TYP.
.168
±
.010
(4,27
±
0,25)
unlighted
lightable
2.057 + .015 – .010
(52,25 + 0,13 – 0,25)
.687 .005
(17,45 0,13)
.750 .025
(19,05 0,64)
.450 .010
(11,43 0,25)
.750 .025
(19,05 0,64)
.450 .010
(11,43 0,25)
1.370
+ .015
– .010
(34,80
+ 0,38
– 0,25)
.687
.005
(17,35
0,13)
.500 + .010 – .005
(12,7 + 0,25 – 0,13)
SQ. TYP.
.030 .002
(0,76 0,05)
DIA. TYP.
.030 .002
(0,76 0,05)
DIA. TYP.
.408 .005
(10,36 0,13)
SQ. TYP.
.125 .005
(3,18 0,13)
.168 .010
(4,27 0,25)
.125 .005
(3,18 0,13)
.168 .010
(4,27 0,25)
unlighted
lightable
CIRCUIT BOARD STANDOFF
.062 + .010 – .005 (1,57 + 0,25 – 0,13) DIA.
x .032 .005 (0,81 0,13) HIGH
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Standard Keypads
terminal arrangementS
For continuously lit keyboards, mixing horizontally and vertically mounted
modules is not recommended. See lamp mounting on page D-33.
Letters shown in front views are for identification only; product is marked
on back as shown. Pin locations correspond to circuit diagrams.
Vertical mount
Button
identification
rear Views and
Pin locations
.
.
.
.
.
.
.
.
1
1
2
3
4
4
horizontal mount
Button
identification
rear Views and
Pin locations
.
.
.
.
1
2
3
4
A
Keyboards and Keypads
A
.
.
.
.
.
.
.
.
1
4
.
.
.
.
unlighted
.
.
.
.
lightable
.
.
.
.
unlighted
lightable
A
B
.
.
.
.
A1
A2
A3
A4
.
.
.
.
A
B
.
.
.
.
B1
B2
B3
B4
.
.
.
.
.
.
.
.
A1
A2
A3
A4
.
.
.
.
B1
B2
B3
B4
.
.
.
.
.
.
.
.
unlighted (only)
unlighted (only)
.
.
.
.
.
.
.
.
A
B
C
D
E
F
A
B
C
A
B
C
.
.
.
.
C1
C2
C3
C4
.
.
.
.
.
.
.
.
B1
B2
B3
B4
.
.
.
.
.
.
.
.
A1
A2
A3
A4
.
.
.
.
A1
A2
A3
A4
A1
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
A4
B1
B2
B3
B4
B1
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
B4
unlighted
.
.
.
.
C1
C4
.
.
.
.
.
.
.
.
B1
B4
.
.
.
.
.
.
.
.
A1
A4
.
.
.
.
C1
C2
C3
C4
C1
.
.
.
.
unlighted
.
.
.
.
lightable
.
.
.
.
.
.
.
.
C4
lightable
A
D
B
E
C
F
.
.
.
.
C1
C4
.
.
.
.
.
.
.
.
B1
B4
.
.
.
.
.
.
.
.
A1
A4
.
.
.
.
.090 (2,29)
TYP.
D1
.
.
.
.
.
.
.
.
D4
A1
A4
.
.
.
.
F1
F4
.
.
.
.
.
.
.
.
E1
E4
.
.
.
.
.
.
.
.
D1
D4
.
.
.
.
B1
B4
E1
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
E4
.687
(17,45)
.
.
.
.
.
.
.
.
C1
C4
F1
.
.
.
.
unlighted
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
F4
.687
(17,45)
.687
(17,45)
.488
(12,40)
unlighted
.
.
.
.
.
.
.
.
.185 ± .010
(4,70 ± 0,25)
.045 (1,14)
TYP. 8 PLS.
.094 (2,39)
C1
C4
.
.
.
.
B1
B4
.
.
.
.
A1
A4
.
.
.
.
D1
D4
A1
A4
.
.
.
.
F1
F4
.
.
.
.
.
.
.
.
E1
E4
.
.
.
.
.
.
.
.
D1
D4
.
.
.
.
.162 + .002 – .004
(4,11 + 0,05 – 0,10)
DIA. HOLE TO
ACCOMMODATE
LIGHT SOURCE
.
.
.
.
.
.
.
.
B1
B4
E1
.
.
.
.
.
.
.
.
E4
.
.
.
.
.
.
.
.
CIRCUIT BOARD STANDOFFS
.066 ± .006 (1,68 ± 0,15) DIA. X
.032 ± .005 (0,81 ± 0,13) HIGH
.
.
.
.
C1
C4
F1
.
.
.
.
lightable
.
.
.
.
F4
.
.
.
.
lightable
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Standard Keypads
orientation oF moDuleS
A module, depending on circuitry, may not be
symmetrical. Rotating it 180° will result in a
different pin location. Please note the button
identification, the pin location for the desired
circuitry, and the direction of mounting. It
is important to use this information when
designing a printed circuit board layout and
when communicating with Grayhill. See Ordering
Information–Special Keyboard Modules on the
next page.
CirCuit DiagramS
The bottom view of the line drawings shows
number (A1, A2, etc.) next to the pin locations
of each switch section. These pin numbers
are directly related to the circuit diagrams.
For example, if the switch under Button A of a
standard module were SPST, the pins would
be located at the "#2" Position. If the module
were a lightable one with SPST circuitry, the
pins would be located at the "#1" Position. If
other locations are desired, specify them.
The coded circuits shown are suggested
possibilities and each button may carry a
different circuit. Location of active pins on each
button may be varied to conform with layout of
the printed circuit board. Up to a 7-bit code is
possible under each button.
Combinations of simple circuitries are also
possible as shown in the sample diagrams.
Standard modules
SPST
2
2
2
3
lightable modules
4PST
1
2
3
4
1
2
3
4
1
2
3
4
1
2PST
2
3
1
2
3
4
3PST
SPST
1
1
4
2PST
1
4
Keyboards and Keypads
Coded Circuitry–to 7 Bits/Button
C
C
C
C
C
C
Note: Coded switches are constructed so that common (C) is made after all other contacts.
other Possible Circuit Configurations
C
C
C
C
PrinteD CirCuit BoarD laYout
This layout provides the horizontal printed circuit board layout as viewed from the top side of
the PC board. Turning end to end will result in a different pin location. However, the dimensional
relationship will remain the same.
lightable modules–per drawing below.
This drawing indicates the layout to be used for a 6 button module with light sources mounted
two ways: the lamps for the upper 3 buttons are mounted from the top or component side of the
board, and the lamps for the lower 3 buttons are mounted by the easy replacement method. (See
also Light Source and Lamp Mounting.) Light sources, when mounted from the top side of the
board, must be mounted before the keyboard modules; when mounted, lamp should extend no
more than .250" (6,35 mm) above the board.
unlighted module
.
488 – .003
lightable module
HOLE TO
ACCOMMODATE
.032 (0,81) DIA.
PIN
.045 – .002
(1,14 – 0,05)
TYP.
(8 PLACES)
C
L
(12,40 – 0,08)
TYP.
.090
(2,29)
TYP.
.687 – .003
(17,45 – 0,08)
.687 – .003
(17,45 – 0,08)
.112
± .003
(28,45
± 0,08)
TYP.
DIMENSIONS ARE DEPENDENT ON
LAMP SOURCE. APPROXIMATELY
.020 (0,51) AND .100 (2,54) APART
FOR A T-1 LAMP OR LED
HOLE TO
ACCOMMODATE
.032 (0,81) DIA.
PIN
.500 – .003
(12,7 – 0,76)
.687 – .003
(17,45 – 0,08)
C
L
.170 (4,32)
RECOMMENDED
DIA. HOLE
ACCOMMODATES
LAMP IN EASY
REPLACEMENT
MOUNTING
.687 ± .003
(17,45 ± 0,08)
.687 ± .003
(17,45 ± 0,08)
.094
– .010
(2,39
– 0,25)
C
L
C
L
.244 (6,20) TYP.
.270 ± .003
(6,86 ± 0,08)
C
L
C
L
C
L
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Standard Keypads
SPeCiFiCationS
rating
rating at 5 Vdc: 100 milliamps
Contact resistance:
25 milliohms or less on
a new switch
Voltage Breakdown: 250
Vac between mutually
insulated parts
insulation resistance: 1,000 megaohms
minimum
life expectancy: 1,000,000 operations
Contact Bounce:
10 milliseconds or less for
the life of the switch
operating temperature: -40°C to 80°C
Keyboards and Keypads
Spring Contact: Copper alloy, gold plate over
nickel plate
housing: ABS plastic (gray)
Base: PPS plastic (black)
return Spring: Tinned music wire
other Parts: (By Module and Legend Style): For
unlighted module with molded legends or top
surface printed legends. Internal Button is acetal
and the Button is ABS plastic (gray).
For unlighted module with sub-surface printed
legends or insertable legends, Internal Button
is acetal; Internal Cap is ABS plastic (gray); and
Clear Cap is polycarbonate plastic. For lightable
modules, the Internal Button and the Clear Cap
are polycarbonate. The Internal Cap for gray
modules is acrylic; for the black modules, the
Internal Cap with window is polycarbonate.
For special lightable modules for higher
temperatures, internal button cap is polycarbonate
and housing is polyester.
operating Features
action: Momentary, wiping contact
Button travel: 0.130" (3,30 mm) total travel
overtravel: 0.080" nominal
operating Force: 8 ± 3 ounces (depends on
number of poles.)
Soldering instructions
Series 82 Keyboard Modules have been
successfully tested for heat resistance to
soldering up to 260°C (500°F) for a maximum
of 5 seconds. Careful flux cleaning is required
since the switch is not sealed. For applications in
excess of these limits or that require vapor spray
or immersion cleaning, contact Grayhill.
materials and Finishes
Pin Contact:
Brass, gold plate over nickel
plate
StanDarD legenDS
telephone Keyset
Two 6-button modules form the keyset. White
telephone legend is
molded into a gray
button. SPST, 2PST,
3PST, and 4PST
circuitr y available
from distributors, see
ordering information;
order special circuitry
from Grayhill.
Prototypes can look professional with insertable
legend modules. Just slip imprinted legend insert
through the slot of the clear button cap.
legend Sheet
Available for each module style. Each sheet
contains commonly used symbols, terms, alpha
characters, and 0-19 in News Gothic Condensed
type on polyester film, ready to be cut and inserted.
Deadfront legends are invisible until lit.
non-legend, lighted modules
Standard lightable module configurations
without cap slot for insertable legend.
insertable legend Styles
White on Clear: For unlighted gray modules
Black on Clear: For lighted gray modules
translucent White on Black: For black modules
Deadfront on Black: For black modules
Part no. 82aC2017-1
Part no. 82aC2050-1
Part no. 82aC2060
SPeCial legenDS
molded-in legends
For unlighted modules
In addition to standard white
legend on gray button, long-
wearing, molded-in legends are
available in white button with black
legend and white legend with red,
green or black buttons. Other color
combinations are possible.
Printed type styles
The type style chart below illustrates type style
and approximate sizes and limits for button cap
legends; other sizes are also available. Limitations
for legends differ with type size and character.
Legends for lightable modules are further limited
by the size of the internal button and lighted area.
Grayhill's library includes many popular legends.
Contact Grayhill for complete information.
type no.
and typical
height
4gh088
.083"
1gh125
.138"
3gh187
.207"
2gh250
.276"
Sample Style
and typical
Sizes
ABCDEFGH
Special Colors
Besides the standard
gray and black housings,
you may order white,
beige or brown. Button
colors may also be
specially ordered. For
more information, see
next page.
top Surface
Character and
line limitations
8 Char.
SYSTEMS
3 Lines
12345678
4 Char.
2 Lines
3 Char.
1 Line
2 Char.
1 Line
RESEARCH
Printed legends (2 Styles)
Virtually anything which can be photographed
can be printed. Sturdy epoxy ink printing bonds
to the surface of the button. Standard printing
for the gray unlighted buttons is white; standard
printing for the translucent white buttons of the
lightable modules is black.
top Surface Printing:
Legend is applied directly
to top of button. Available on all standard,
unlighted modules.
Sub Surface Printing:
Provides maximum wear
for printed surfaces. Available for lighted and
unlighted gray modules. Printed internal button
cap is protected by a clear outer cap.
Sub Surface
Character and
line limitations
5 Char.
2 Lines
4 Char.
1 Line
2 Char.
1 Line
2 Char.
1 Line
TAB
INDEX
lightable module
Character and
line limitations*
4 Char.
2 Lines
3 Char.
1 Line
2 Char.
1 Line
N/A
STOP
1234
ABCDE
OPER
CODE
SEND
OFF
ABCD
ON
OFF
ON
N/A
ABC
15
15
Note: Limitations for legends differ with surface to be printed and actual characters. If your application exceeds the approximations
in the chart, contact Grayhill for more information.
* For top and sub-surface printed modules.
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
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