2013 DESCO INDUSTRIES INC.
Employee Owned
3651 WALNUT AVE., CHINO, CA 91710
PHONE: (909) 627-2453
DRAWING
NUMBER
35690
DATE:
October
2013
CONDUCTIVE BRUSHES
Characteristics:
Brushesminimizestaticchargegenerationandremove
electrostaticchargestogroundwhenheldbygrounded
personnel
Dissipativepolypropyleneblackhandlesareabletoremovechargesto
ground
VolumeResistanceofconductivefibers:1x103to<1x105ohms
per ANSI/ESD STM11.12
VolumeResistanceofdissipativehandle:1x104to<1x1011ohms
per ANSI/ESD STM11.12
Twokindsofbristles-semifine,firm
Semi-finebristlesareidealforchemicalandelectronicsapplications
Firmbristlesaremainlyforelectronics,especiallycircuitboards
Firmbristlesaremadeofconductiveyarn,pighairandhorsehair
Semi-finebristlesaremadeofconductiveyarnandhorsehair
Generallyspeaking,oncetheconductiveyarnisaddedtothebristles,itneutralizesthe
possibilityofstaticbuildupcausedbythenaturalhair.
Syntheticbristlescaneasilybecomechargedwithstaticinstandardhumidityconditions.
Naturalhairusuallybuildsstaticinareasoflowhumidity,butduetotheconductivefibers
inourbrushes,thisproblemdoesnottakeeffect.
35691
35690
35692
35693
35694
35695
Item
Style
Bristle Hardness
Bristle Dimensions
35690
Round
Firm
1/4"diameter(6mm),0.59"H(6mm)
35691
LongHandle
Firm
1" L (25 mm)
x0.79"H(20 mm)x0.59"W(15 mm)
35692
LongHandle
Firm
2" L (50 mm)
x0.79"H(20 mm) x0.59"W(15 mm)
35693
Flat
Firm
2" L (50 mm)
x1"H(6 mm)x0.55"W(14 mm)
35694
Flat
Semi-Fine
0.5" L (13 mm)
x.75"H(19 mm)x0.4"W(10 mm)
35695
CurvedHandle
Firm
3" L (76 mm)
x0.79"H(20 mm)x1.5"W(38 mm)
ESDHandbookTR20.20Table1listsunderTypicalStaticElectricity
Sources“Brushes(camel/pighairandsyntheticbristles).”“Itshouldbe
understoodthatanyobject,item,materialorpersoncouldbeasource
ofstaticelectricityintheworkenvironment.Removalofunnecessary
nonconductors,replacingnonconductivematerialswithdissipativeor
conductivematerialsandgroundingallconductorsaretheprinciple
methodsofcontrollingstaticelectricityintheworkplace,regardlessof
theactivity.”(TR20.20section2.4)
35696
Specificationsandproceduressubjecttochangewithoutnotice.
Unless otherwise noted, tolerance is ±10%.