The contacts are manufactured by high speed turning process with, if necessary, additional secondary machining operation for example for flats, slots or solder cups. The preferred diameter range lies between 1 and 6 mm and contact length up to 40 mm are standard.
MATERIAL
CONTACT BODIES
- Brass CuZn36Pb3, C36000
- Brass CuZn35Pb2, C34500 for contacts with crimp terminations
- Bronze CuSn4Pb4Zn4, C54400 for contacts with compliant press-fit terminations
CLIPS
- Beryllium copper alloy C17200
SPRINGS
- Stainless steel X12CrNi177 mat. Nr 1.4310, DIN 17224
- Music wire mat. Nr 1.1211, DIN 17223
HOODS
- Stainless steel AISI 305
All these materials are compliant with RoHS requirements. Lead content of copper alloys is less than 4% in accordance with Exception 6 of the RoHS directive 2002/95/CE.
PLATING
Contact plating is made up of basis underplating acting as diffusion barrier and of finishing layer.
UNDERPLATING
- Nickel (Ni) electro-deposited, acc. to SAE-AMS-QQ-N-290
- Electroless nickel phosphorus alloy for max. corrosion and wear resistance and for lowest magnetic permeability (plating suffix N)
FINISH
- Gold (Au) acc. to ASTM B488, type II C, plating codes 1 (0.25 µm), 3 (0.75 µm), 4 (1.27 µm) and 7 (gold flash)
- Tin (pure tin Sn), plating code 8, standard tin plating with excellent solderability, RoHS-compliant
- Tin-Lead (SnPb90/10) acc. to ASTM B545, plating code 9. This plating is not RoHS-compliant
- Silver (Ag) acc. to ASTM B700, plating code 6
ELECTRICAL AND MECHANICAL CHARACTERISTICS
See individual data pages.
ENVIRONMENTAL CHARACTERISTICS
The contacts withstands following environmental tests without mechanical and electrical defects:
- Dry heat steady state IEC 60512-11-9.11i / 60068-2-2.Bb: 125 °C, 16 h
- Damp heat cyclic IEC 60512-11-12.11m / 60068-2-30.Db: 25/55 °C, 90 – 100 %rH, 1 cycle of 24 h
- Cold steady state IEC 60512-11-10.11j / 60068-2-1.A: -55 °C, 2 h
- Thermal shock IEC 60512-11-4.11d / 60068-2-14.Na: -55/125 °C, 5 cycles 30 min
- Sinusoidal vibrations IEC 60512-6-4.6d / 60068-2-6.Fc: 10 to 500 Hz, 10 g, 1 octave/min, 10 cycles for each axis
-
Shock IEC 60512-6-3.6c / 60068-2-27.Ea: 50 g, 11 ms, 3 shocks in three axis
During the above two tests no contact interruption >50 ns does appear.
- Solderability J-STD-002A, Test A, 245 °C, 5 s, solder alloy SnAg3.8Cu0.7
- Resistance to soldering heat J-STD-020C, 260 °C, 20 s
-
Resistance to corrosion:
Salt spray test IEC 60068-2-11.Ka: 48 h
Sulfur dioxide (SO2) test IEC 60068-2-42.Kc: 96 h at 25 ppm SO2, 25 °C, 75 %rH
Hydrogen sulfide (H2S) test IEC 60068-2-43.Kd: 96 h at 12 ppm H2S, 25 °C, 75 %rH