Datasheet

56
®
®
www.lemo.com
ASTM D 149 / IEC 60243 kV/mm 19 - 25 17.2 - 24
ASTM D 257 / IEC 60093 Ω
●
cm 10
16
10
18
ASTM D 257 / IEC 60093 Ω 10
15
10
17
ASTM C 177 W/K
●
m 0.25 0.23
IEC 60112 V CTI 150 CTI 500
ASTM D 150 / IEC 60250 – 3.2 - 3.5 2 - 2.1
ASTM D 150 / IEC 60250 – < 0.005 < 0.0003
– °C 250 260
– °C -53 -200
ASTM D 570 / ISO R624 % < 0.3 < 0.01
–Gy10
7
2
●
10
2
UL 94 / UL 94 – V 0 V 0
Electrical Contact
rads 10
3
10
4
10
5
10
6
10
7
10
8
10
9
10
10
Gray (Gy) 10
1
10
2
10
3
10
4
10
5
10
6
10
7
10
8
radiation dose γ
Radiation resistance
PEEK
PTFE
Damage
minimal to mild (almost always usable)
mild to moderate (often satisfactory)
moderate to severe (unusable)
Technical Description
The secure, reliable electromechanical connection
achieved with LEMO female contacts is mainly due to
two important design features:
1. Prod proof entry which ensures perfect concentric
mating even with well used and/or carelessly handled
connectors.
2. The pressure spring that maintains a constant, even
force on the male contact when mated. The leading
edge of the spring is chamfered to slide smoothly on
the male contact, preserving the gold-plated surface
treatment and preventing undue wear.
Contact Material
LEMO female electrical contacts are made from bronze
(UNS C 54400). Bronze is chosen because of its high
modulus of elasticity, its excellent electrical conductivity
and a high mechanical strength.
LEMO male solder and print contacts are made from
brass (UNS C 38500). Male crimp contacts are made
from brass (UNS C 34500) which is ideal for crimping
onto the electrical conductor.
Conductor retention method
Both male and female contacts are available in crimp,
solder or print versions.
Insulator
Note: the technical data contained in
this chapter gives a general informa-
tion about plastic materials used by
LEMO as electrical insulator mate-
rials. LEMO reserves the right to pro-
pose new material which would have
higher technical characteristics and
to withdraw any material contained
in this publication or others from
LEMO and its subsidiary companies.
LEMO only uses granulated, pow-
dered plastic materials or bars from
specialized suppliers. LEMO is not
responsible, in any case, for these
materials.
Property
Dielectric strength
Volume resistivity at 50% HR and 23°C
Surface resistivity
Thermal conductivity
Comparative tracking index
Dielectric constant (10
6
Hz)
Dissipation factor (10
6
Hz)
Maximum continuous service temperature
Minimum continuous service temperature
Water absorption in 24h at 23°C
Radiation resistance
Flammability rating
Test
Unit PEEK PTFE
method
Technical Characteristics
Technical Description
LEMO uses virgin quality PTFE for the insulator material
of coaxial connectors, which guarantees excellent insu-
lating properties.
LEMO also proposes PEEK (Polyether Etherketone). Its
higher mechanical strength and excellent radiation resis-
tance make it ideal for most applications.
Insulation resistance between the contacts
and contact/shell
(measured according to IEC 60512-2 test 3a)
Multipole Unipole
PEEK PTFE
> 10
12
Ω > 10
12
Ω
> 10
10
Ω > 10
10
Ω
Insulating material
new
after humidity test
1)
Note:
1)
21 days
at 95% RH
according to
IEC 60068-2-3.