GMA.0B.030.DN LEMO, GMA.0B.030.DN Datasheet - Page 178

• Manufacturer Part Number: GMA.0B.030.DN
• Description: Circular Push Pull Connectors 3.0mm to 3.4mm dia. BLK BND RLF 0B CABLE
• Manufacturer: LEMO
• Series: B Seriesr

Specifications of GMA.0B.030.DN

• Product Type: Accessories
• Shell Plating: Gold
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Electrical contact
Technical description
The secure reliable electromechanical connection achieved
with LEMO female cylindrical contacts is mainly due to
two important design features :
1. Prod proof entry on the mating side which ensures per-
2. The pressure spring, with good elasticity, maintains a
Contact material and treatment
LEMO female contacts are made of bronze beryllium (QQ-
C-530) or bronze (UNS C 54400). These materials are cho-
sen because of their high modulus of elasticity, their excel-
lent electrical conductivity and a high mechanical strength.
Thickness comparison between the outside and the
inside of female contacts
Note: P = inspection point
Au
Ni
Cu
Bronze
or brass
176
fect concentric mating even with carelessly handled con-
nectors.
constant even force on the male contact when mated. The
leading edge of the pressure spring preserves the sur-
face treatment (gold-plated) and prevents undue wear.
®
®
2.5
2.5
P
P
LEMO male solder and print contacts are made of brass (UNS
C 38500). Male crimp contacts are made of brass (UNS
C 34500) or annealed brass (UNS C 38500) with optimum
hardness (HV) for crimping onto the wire.
Notes: the standard surface treatment are as follows:
– nickel: FS QQ-N-290A or MIL-C-26074C
– gold: ISO 4523.
1)
2)
3)
Notes:
Male crimp
Male print
Female crimp
Female print
Clips
Wire
Contact
minimum value
for elbow print contacts
treatment completed by 6 µm Sn (lead free) tin-plating
(mm)
12.0
ø A
0.5
0.7
0.9
1.3
1.6
2.0
3.0
4.0
5.0
6.0
8.0
2)
1)
1)
Type
contacts are silver plated
male
(µm)
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
–
Gold thickness
Brass (UNS C 34500)
Brass (UNS C 38500)
Brass (UNS C 38500)
Bronze (UNS C 54400)
Cu-Be (FS QQ-C-530)
Cu-Be (FS QQ-C-530)
Stainless steel
Brass
outside
(µm)
Material (standard)
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
–
female
inside
(%)
65
70
75
75
75
75
75
75
75
75
75
–
Surf. treatment (µm)
0.5
0.5
Cu
–
–
www.lemo.com
Ni
3
3
3
–
3)
Au
1.0
1.5
–
–
1)