Ideal for use in industries such as automotive, medical
and consumer, KK
®
254 Reflow Process Compatible (RPC)
Connector System supports a lead-free solder process and
delivers up to 5.0A and 250V per circuit in a 2.54mm pitch
package
The KK
®
Reflow Process Compatible (RPC) connector system is designed to
support RoHS lead-free initiatives. Designed with a nylon housing, the wire-to-
board system can withstand temperatures up to +260°C.
KK
®
254
Reflow Process
Compatible (RPC)
Connector System
171856
Vertical Header
171857
Right-Angle Header
Features and Benefits
High-temperature nylon housing
Withstands lead-free high-
temperature solder processing up
to +260°C. Does not require the
drying needs of normal nylon
Ideal for high-vibration
environments
Prevents mismating
Allows for drop-in replacement on
existing header applications. Mates
with standard KK receptacles
Inhibits tin whiskering
Ensures secure mating between
headers and receptacles
Optional box-style dual-cantilever
terminal
Polarized friction-lock header
Standard KK header footprint,
vertical, right-angle headers
Matte-tin over nickel plating
PCB receptacles are available in
standard KK
®
connectors
KK
®
254 RPC Vertical
and Right-Angle
Headers with Friction
Lock
Applications
Medical
– Patient monitoring
– Portable diagnostics
– Dental equipment
Automotive
– Control modules
– Lighting fixtures
– Stereos
– Display panels
Data/Computing and
Telecommunications/Networking
– Scanners/multi-function machines
– Printers
– Workstations
Consumer
– Home appliances (Washer/dryer
and Dishwashers)
– Home security
– HVAC
Office Scanner
Car Console
Dental Equipment
Ordering Information
KK
®
254
Reflow Process
Compatible (RPC)
Connector System
Standard PCB Receptacles
Series No.
44812
4455
Pitch
2.54mm
Application
Board-to-Board
Configurations
Top Entry, Through Hole
Top Entry, Through Hole, Right-Angle
Standard Crimp Terminals
Series No.
2759
4809
6459
8088
41572
2.54mm
Signal
Phosphor Bronze
Pitch
Application
Base Material
Brass
Standard Crimp Housings
Series No.
6471
2695
7880
47054
2.54mm
Wire-to-Board, Signal
Pitch
Application
Base Material
Yes
No
Yes
Specifications
Reference Information
Packaging:
Bag; Tape and Reel packaging to be
released
UL File No.: TBD
CSA File No.: TBD
Mates With:
any KK
®
2.54mm housing or PCB
receptacle
Designed In: Millimeters
RoHS: Yes
Low Halogen: Yes
Glow Wire Compliant: Yes
Electrical
Voltage (max.): 250V
Current (max.): 4A
Contact Resistance (max.): 10mΩ
Dielectric Withstanding Voltage:
500V AC (RMS)
Insulation Resistance (min.): 1000MΩ
Mechanical
Contact Insertion Force: 11.12N
Contact Retention to Housing: 17.8N
Mating Force: 7.8N per circuit
Unmating Force: 2.3N per circuit
Durability (min.): 25 cycles
Physical
Housing: High-temperature Nylon
Contact: Brass
Plating:
Contact Area — Matte Tin (Sn) or
Select Gold (Au)
Solder Tail Area — Matte Tin (Sn)
Underplating — Nickel (Ni)
PCB Thickness: 0.062mm
Operating Temperature:
Brass: -40 to +80°C
Phosphor Bronze: -40 to +105°C
www.molex.com/link/kk254.html
Order No. 987650-9112
Printed in USA/KC/2013.08
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