Grayhill Pushbutton switches: Butt Contact 38BC Series - Manual

Pushbutton Switches
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Butt Contact Pushbutton Switches
Series: 38BT = SPST, Momentary, Thru-Hole
Series: 38BC = SPDT, Momentary, Thru-Hole
dimension a: 0 = 0.020" 4 = 0.215"
38Bt-4-V-3-S
Seal: S = O-Ring Seal, N = No Seal
Contact Material: 1 = Solder Dip over Gold
2 = Solder Dip over Silver
3 = Gold - RoHS Compliant
4 = Silver - RoHS Compliant
Orientation: V = Vertical to PCB
38BC
SPdt
38Bt
SerieS 38Bt and 38BC
Sub-Miniature Vertical PC Mount
FeatureS
• Actuates at Right Angle to Printed Circuit Board
• Drop-In Replacement for Industry Standard
• SPST and SPDT, Momentary Contact
• Sealed Plunger Option
Unless otherwise indicated, tolerances are ± .010 (0,25)
CirCuitry
SPSt–n.O.
SPSt n.O.
OrderinG inFOrMatiOn
diMenSiOnS in inches (and millimeters)
SPeCiFiCatiOnS
electrical ratings
Operating Life: 80,000 make-and-break
cycles at full load
Contact rating (resistive load):
Gold Contacts: 0.4 VA maximum at 20 Vac or
Vdc
Silver Contacts: 1.0 Amp maximum at 120
Vac or 28 Vdc
Contact resistance: Below 20 milliohms
typical initial at 2-4 Vdc, 100 mA, for both
silver and gold-plated contacts insulation resistance: 1000 megaohms
minimum
Voltage Breakdown: 1000 Vrms minimum at
sea level
Operating temperature: -30°C. to +85°C.
Solderability: Per MIL-STD-202F, Method
208D, or EIA RS-186E, Method 9 (1 hour
steam aging)
Materials and Finishes
Base and Cover: Thermoplastic (UL 94V-0)
Plunger: Thermoplastic (UL 94V-0), (S
versions include an internal o-ring seal)
terminals: Copper alloy, gold or silver plate
(as specified) over nickel plate
Spring: Plated music wire
Contact System: Copper alloy, gold or silver
plate (as specified) over nickel plate
SPdt–n.O.
N.O.
TERM. 3
N.C.
TERM. 1
COMM
TERM. 2
SPSt
.190 (4,83)
DIA.
Dim.
A
.177
(4,50)
.527 (13,39) .130 (3,30) TYP.
.200
(5,08)
.200
(5,08)
.320
(8,13)
.020 (0,51)
SQUARE
.180 (4,57)
DIA.
.100 (2,54)
DIA.
1
.200
(5,08)
.200
.177
(4,50)
.527(13,39)
.130
(3,30)
TYP.
DIM "A"
.100
(2,54)
DIA.
.180
(4,57)
DIA.
.020 (0,51)
SQ. TYP.
.320
(8,13)
.100
(2,54)
TYP.
.190
(4,83)
DIA.