Specifications

 
Standard curve Not applicable
 
Recommended excitation 10 µA ±0.1%
 
Maximum reverse voltage (diode) 2 V
 
Maximum forward current (diode) 500 mA
 
Dissipation at recommended excitation Typical 50 µW max at 4.2 K, 14 µW at 77 K, 10 µW at 300 K
 
Thermal response time (typical) P and PL: 100 ms at 4.2 K, 250 ms at 77 K, 3 s at 305 K;
SD: <10 ms at 4.2 K
 
Use in radiation Recommended for use only in low level radiation – for more information click here
 
Use in magnetic field Low magnetic field dependence when used in fields up to 5 T above 60 K – for more information click here
 
Reproducibility1 ±10 mK at 4.2 K

Soldering standard J-STD-001 Class 2

1 Short-term reproducibility data is obtained by subjecting sensor to repeated thermal shocks from 305 K to 4.2 K
Range of Use
 Minimum
limit
Maximum limit
TG-120-P 1.4 K 325 K
TG-120-PL 1.4 K325 K
TG-120-SD,
CU-HT
1.4 K500 K
 
Calibrated Accuracy
 Typical sensor accuracy2
Long-term
stability3
1.4 K4 ±12 mK ±25 mK
4.2 K4±12 mK±15 mK
10 K±12 mK±25 mK
77 K±22 mK±15 mK
300 K±32 mK±50 mK
500 K±50 mK
2 [(Calibration uncertainty)2 + (reproducibility)2 ]0.5
for more information see
Appendices B , D, and E
3 Long-term stability data is obtained by subjecting
sensor to 200 thermal shocks from 305 K to 77 K
4 Under 10 K calibration valid in vacuum only
Temperature Response Data Table (typical)
 TG-120
 V (volts)dV/dT (mV/K)
1.4 K 5.3909-97.5
4.2 K4.7651-214
20 K2.5341-97.5
77 K1.4222-1.24
300 K0.8978-2.85
500 K0.3778-3.15
Click here for expanded response table
Physical Specifications
 MassLead typeInternal
atmosphere
Lead
polarity
Sensor
materials
TG-120-P79 mg
2 phosphor
bronze, insulated with heavy build
Polyimide
Air
Short (+)
Long (–)
BeO ceramic header set into a gold plated copper cylinder
TG-120-PL20 mg2 platinum
Solid
epoxy
Short (+)
Long (–)
Constructed with platinum, Stycast® epoxy, and alumina
TG-120-SD 38 mg
2 platinum,
welded to
package;
CAUTION: leads
are delicate
Hermetically
sealed in
vacuum
Positive lead
on right with
package lid
up and leads
toward user
Chip mounted on sapphire base with alumina body and
lid, Mo/Mn metallization on base & lid top with nickel and gold plating
GaAlAs Calibration Ranges
galium-aluminum-arsenide-calibrations
Typical Magnetic Field-Dependent Temperature Errors5 ΔT/T (%) at B (magnetic induction)
Package base parallel to field B
T (K)1 T 2 T3 T4 T5 T
4.22.93.83.72.81
300.20.20.30.30.2
78<0.1<0.10.170.160.1
300-0.1-0.1-0.1-0.1-0.1
5 To minimize magnetic field-induced temperature errors, the sensor should be oriented so that the package base is perpendicular to the magnetic field flux lines – this results in the diode current being parallel to the magnetic field
TG-120-P
 
TG-120-PL
 
TG-120-SD