Burn-in and Test Socket Thermoplastic Data

Following is data on typical plastics used for burn-in and test sockets.

Thermoplastics Data
THERMOPLASTICS
Nylon
6 / 12
Nylon
4 / 6
(30% glass)
Polyester
PET
Polycarbonate
Lexan®
Polyester
PBT (Valox®)
Polysulfone
Modified Polyester
TFE (Tefzel®)
Polyetheretherketone
PEEK
Polyetherimide
PEI (Ultem®)
LCP 175°C Max Use
LCP 300°C Max Use
Polyphenylene Sulfide
PPS (Ryton®)
Polyethere Sulfide
PES
Polyamide-imide
PAI (Torlon®)
General Properties
Specific Gravity
1.07
1.68
1.27
1.21
1.62
1.24
1.86
1.32
1.51
1.61
1.57
1.60
1.51
1.40
Water Absorption
(% at 24 hrs)
0.40
1.60
0.05
0.15
0.07
0.22
0.20
0.50
0.16
0.02
0.01 – 0.02
0.05
0.20
0.28
Max Suggested Continuous
Temp
(°C)
65
149
120
125
140
150
150
160
165
175
250
210
225
250
Mechanical Properties
Flexural Strength
(x 104 psi – average)
1.40
3.40
3.35
1.32
2.70
1.54
3.00
2.40
3.30
3.70
2.30
2.68
1.72
3.07
Flexural Modulus
(x 106 psi – average)
0.29
1.30
1.30
0.325
1.10
0.39
0.95
0.59
1.30
2.10
1.50
1.70
0.59
0.644
Compressive Strength
(x104 psi – average)
2.40
N/A
2.50
1.25
1.80
1.39
1.00
2.50
3.70
2.00
N/A
2.10
N/A
4.00
Tensile Strength
(x 104 psi – average)
8.80
2.30
2.30
9.00
1.70
1.02
1.20
1.45
2.00
3.00
2.40
1.90
1.20
2.69
Izod Impact Strength
(notch side 23°C ft-lbs/in)
1.00
1.30
1.90
12.00
1.30
1.20
7.00
1.80
2.00
2.80
2.20
1.40
1.50
2.50
Hardness
Rockwell Scale
R-114
R-120
M-100
M-70
M-90
M-69
R-50
M-99
M-114
M-87
N/A
R-123
M-98
E-78
Electrical Properties
Dielectric Constant
(60 Hz, dry)
4.00
4.20
3.60
3.01
3.80
3.07
2.60
3.20
3.70
4.10
2.90
3.90
N/A
4.00
Dielectric Strength
(volts/mil, short time, dry)
400
N/A
550
425
750
425
400
480
770
1100
1100
450
780
600
Dissipation Power Factor
(1 MHz dry)
0.02
0.023
0.012
0.01
0.02
0.003
0.005
0.003
0.005
0.006
0.003
0.006
N/A
0.009
Volume Resistivity
(1015½-cm at 23°C)
1
3
30
10
3.4
50
10
49
30
1
1
4.5
10
3
Arc Resistance
(seconds)
121
N/A
90
120
28
122
72
N/A
85
137
137
34
N/A
125
Thermal Properties
Deflection Temperature
(at 264 psi °C)
82
284
224
132
204
174
210
160
210
230
241
243
210
275
Coefficient of Linear Expansion
(10-5 inch/inch at 23°C)
5.00
N/A
29
3.75
3.30
3.10
0.72
2.60
3.10
5.00
N/A
1.20
2.60
2.00