Manual

Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: [phone] • Fax: [phone] • www.grayhill.com
Pushbutton Switches
.320
(8,13)
.410 (10,41)
MAX.
.162
(4,11)
DIM "A"
.200
(5,08)
.024
(0,61)
.075
(1,91)
.030
(0,76)
.289
(7,34)
.105 (2,67)
TYP.
.200.010
(5,080,25)
.020 (0,51)
TYP.
.180 (4,57)
DIA.
.100 (2,54)
DIA.
C
L
.125
(3,18)
.125
(3,18)
.024
(0,61)
.162
(4,11)
.289
(7,34)
DIM "A"
"A"
.100
(2,54)
.200.010
(5,080,25)
.200
(5.08)
.320
(8.13)
90˚
.105
(2,67)
TYP.
.075
(1,91)
.410 (10,41)
MAX.
1 2 3
.030
(0,76)
TERMINAL ID
38BC
Butt Contact Pushbutton Switches
SERIES 38BM AND 38BC
Sub-Miniature Surface Mount
FEATURES
•SurfaceMountProcessCompatible
•SealedConstruction
•SPSTandSPDT,MomentaryContact
•ExtendedorFlushPlunger
•Drop-InReplacementforIndustryStandard
SPECIFICATIONS
PC Mounting
Rating Criteria
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maximum
Silver Contacts: I.O. Amps maximum at 120
Vacor28Vdc
Contact Resistance:Below20milliohmstypical
initialat2-4Vdc,100mA
Insulation Resistance:1000megaohmsmin.
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)
.070
(1,78)
.040
(1,02)
TYP.
.143
(3,63)
TYP.
.128
(3,25)
TYP.
.080(2,03)
TYP.
.040
(1,02)
TYP.
.080
(2,03)
.368
(9,35)
.150(3,81)
TYP.
TERMINALPADS
.040
(1.02)
STANDOFFPADS
.070
(1.78)
.368
(9.35)
.080(2,03)
.128(3,25)
.040
(1.02)
.150
(3.81)
.080
(2,03)
.143
(6.63)
DIMENSIONS ininches(andmillimeters)
Materials and Finishes
Base and Cover:Thermoplastic(UL94V-0)
Plunger: Thermoplastic (UL 94V-0), with
standardinternalo-ringseal
Terminals:Copperalloy,goldplateovernickel
plate
Spring:PlatedMusicWire
Contact System: Copperalloy,goldorsilver
plate(asspecied)overnickelplate
Switch Support:Brass,tin-plated
SPST
SPDT
38BM