Owner's manual

Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: [phone] • Fax: [phone] • www.grayhill.com
Thru-Hole DIP Switches
DIP Switches
SERIES 79A
Linear Action Circuit Selector
SERIES 79C
Linear Action Tap
FEATURES
•Single-SettingProgramming
•IsolatedorBussedCircuits
•10Positions
•125mA,6Vdc,2000Cycles
•RoHSCompliant
DIMENSIONS ininches(andmillimeters)
Circuit Selector
Eachpositionisasingleisolatedcircuit,which
connects the twoterminals across the switch
package.Themovablecontactisnon-shorting.
Tap Switch
All contacts on one side of the switch are
internallybussedforacommonpole.Anyterminal
on that side maybeusedasacommon,the
othersmaybeclipped.Themovablecontactis
non-shorting.
CIRCUITRY
SPECIFICATIONS
Electrical Ratings
Make-and-break Current Rating:2,000cycles
at10mA,50mVdc;2,000cyclesat125mA,6
Vdc;2,000cyclesat50mA,30Vdc.
Contact Resistance: (measuredat10mA,50
mVdc)CodedSwitches:60mohmsmaximum
initially.OtherSwitches:50 mohms maximum
initially.AfterLIfe:100mohmsmaximum
Insulation Resistance (at 100 Vdc):
Betweenadjacentisolatedcontacts:
Initial:5,000Mohms;1,000Mohmsminimum
afterlife.Acrossopencontacts:Initial:5,000
Mohms;1,000Mohmsminimumafterlife.
Dielectric Strength:Betweenadjacentisolated
contactsandalsoacrossopencontacts.Initially:
750Vac:500Vacafterlife
Contact Carry Rating:2Ampswithamaximum
contacttemperatureriseof20°C
Mechanical Ratings
Mechanical Life:4,000cyclesmaximum.Note:
acycleisonecompleteoperation,backandforth
throughallswitchpositions.
Vibration Resistance:10to2,000Hzat15G
or0.060"doubleamplitude,perMIL-STD-202F
perMIL-5-83504;Method213,ConditionA.No
damageandnocontactopeningsexceeding10
mS(Method204,TestConditionB).
Shock Resistance:509,11mS,halfsine;no
damage and no openings exceeding 10 mS
(Method213,TestConditionA).
Environmental Rating
Operating Temperature:-40°Cto+85°C
Storage Temperature:-55°Cto+85°C
Moisture Resistance: 240 hours with
temperaturecyclingandpolarization,perMIL-
STD-202F,Method305
Materials and Finishes
Nonconductive Parts:PlasticUL94V-O
Shorting Arm: Phosphor bronze, gold plate
overnickelplate
Base Contacts:Copperalloy,goldplateover
nickelplate
Terminals:Copperalloy,mattetinplatedover
nickelbarrier.
Potting Material:Epoxy
Tape and Seal Packaging
Seal Strength: PerMIL-STD-202,Method112.
30secondsat125°hotFluorocarbon
Solderability:PerMIL-STD-202,Method208.
Tape Seal:Polyesterlm
Available from your local Gray hi ll
Distributor.
For prices and discounts, contact a local
Sales Ofce, an authorized local Distributor
orGrayhill.
Circuit Selector
Tap Switch
12345678910
12345678910
Number of Positions Type of Circuit Code Number per Tube Part Number*
 10 CircuitSelector 9 79A10T
 10 SinglePole 9 79C10T
ORDERING INFORMATION
*Atoptapesealisrequiredforswitchesthataremachinesolderedorheavilycleanedafterhand
soldering.Toordertopsealversions,add"S"beforethe"T"intheGrayhillpartnumber.