.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.

CL

.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

•SurfaceMountProcessCompatible

•SealedConstruction

•SPSTandSPDT,MomentaryContact

•ExtendedorFlushPlunger

•Drop-InReplacementforIndustryStandard

SPeCiFiCatiOnS

PC Mounting

rating Criteria

Operating Life:80,000make-and-breakcycles

atfullload

Contact rating (resistive load):

Gold Contacts:0.4VAmaximumat20Vacor

Vdcmaximum

Silver Contacts: I.O. Amps maximum at 120

Vacor28Vdc

Contact resistance:Below20milliohmstypical

initialat2-4Vdc,100mA

insulation resistance:1000megaohmsmin.

Voltage Breakdown:1000Vrmsminimumat

sealevel

Operating temperature:-30°Cto+85°C

Solderability: Per MIL-STD-202F, Method

208D,orEIARS-186EMethod9(1hoursteam

aging)

available from your local Grayhill distributor.

For prices and discounts, contact a local

Sales Office, an authorized local Distributor

orGrayhill.

.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.

TERMINALPADS

.040

(1.02)

STANDOFFPADS

.070

(1.78)

.368

(9.35)

.080(2,03)

.128(3,25)

.040

(1.02)

.150

(3.81)

.080

(2,03)

.143

(6.63)

Materials and Finishes

Base and Cover:Thermoplastic(UL94V-0)

Plunger: Thermoplastic (UL 94V-0), with

standardinternalo-ringseal

terminals:Copperalloy,goldplateovernickel

plate

Spring:PlatedMusicWire

Contact System:Copperalloy,goldorsilver

plate(asspecified)overnickelplate

Switch Support:Brass,tin-plated

SPSt

SPdt

38BM

Pushbutton

4

Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com