Aluminium Housed Power Resistors
Type THS Series
Key Features
■
Established product with
proven reliability
•Leading the way with
over 50 years of design
and manufacturing
experience
■
10 Watts to 50 Watts
■
Versatile product
•Bench mark in every
industry
Applications
■
Braking Resistor
■
Balancing Resistor
■
Capacitor Charging &
Discharging
■
Crowbar
■
Filter
■
Electrical Machinery
general use
■
Available through
Distribution
Type THS Series
Tyco are the leading European
supplier of standard and custom
designed aluminium housed
resistors for general-purpose use,
power supplies, power generation
and the traction industry.
The THS is a range of extremely
stable, high quality wire wound
resistors capable of dissipating high
power in a limited space with
relatively low surface temperature.
The power is rapidly dissipated as
heat through the aluminium housing
to a specified heatsink.
The resistors are made from quality
materials for optimum reliability and
stability. Tyco can test resistors to
conform to relevant international, MIL
or customer specifications.
Characteristics -
Electrical
Long Term Stability: For improvements in long-term stability, resistors must be derated as follows;
for 50% of stated ∆R maximum dissipation must not exceed 70% of rating;
for 25% of stated ∆R maximum, dissipation must not exceed 50% of rating
Insulation Resistance: Dry: 10,000MΩminimum. After moisture test: 1000MΩminimum.
Heat Dissipation: Although the use of proprietary heat sinks with lower thermal resistance is
acceptable, up rating is not recommended.
The use of proprietary heat sink compound to improve thermal conductivity is
recommended for optimum performance of all sizes
Specification: Temperature coefficient below 100R, 50ppm/°C
Temperature coefficient above 100R, 30ppm/°C
Tolerance, 5% standard
Characteristics - Electrical
THS - 10 Watts to 50 Watts
THS10 THS15 THS25 THS50
Dissipation @ 25°C with Heatsink (Watts): 10 15 25 50
Without Heatsink: 5.5 8 12.5 20
Ohmic Value Min (Ohms): R01 R01 R01 R01
Max: 10K 15K 36K 100K
Maximum Working Voltage (DC or ACrms) Volts: 160 265 550 1250
Dielectric Strength (AC Peak) Volts: 1400 1400 2500 2500
Stability (% resistance change, 1000 hours) (%): 11 11
Standard Heatsink - Area (mm2): 41500 41500 53500 53500
Thickness (mm): 11 11
Number of Mounting Holes: 2 hole 2 hole 2 hole 2 hole
Product Specifications -
THS10 - THS50 L
4.0
5.0
Type L
THS10, 15 7
THS25, 50 10
R
N
J
M
L
H
Dimensions -
THS10 - THS50
P
U
T
2 x Mounting Hole
THS10 - 2.4mm
THS15 - 2.4mm
THS25 - 3.3mm
THS50 - 3.3mm
Type H±0.3 J±0.3 L Max M Max N Max P Max R Min T±0.5 U Max
THS10 11.3 12.4 17.0 30.0 17.0 9.0 1.9 3.4 2.5
THS15 14.3 15.9 21.0 36.5 21.0 11.0 1.9 5.2 3.2
THS25 18.3 19.8 29.0 51.8 28.0 15.0 2.8 7.2 3.2
THS50 39.7 21.4 51.0 72.5 30.0 17.0 2.8 7.9 3.2
Literature No. 1773277
Issued: 07-06
Dimensions are shown for
reference purposes only.
Dimensions are in millimetres
unless otherwise specified.
Specifications subject to
change.
www.tycoelectronics.com
passives.tycoelectronics.com
Aluminium Housed Power Resistors
Type THS Series
Literature No. 1773277
Issued: 07-06
Dimensions are shown for
reference purposes only.
Dimensions are in millimetres
unless otherwise specified.
Specifications subject to
change.
www.tycoelectronics.com
passives.tycoelectronics.com
Derating Curve THS10 to THS50
0 25 50 75 100 125 150 175 200 225 250 275
0.01 0.1 1 10 100 1000 10000 100000
Resistance (Ohms)
Heatsink Temp. (degC)
60
50
40
30
20
10
0
400
350
300
250
200
150
100
50
0
Pulse Energy (Joules) Power (W)
THS10 THS15 THS25 THS50
Power Overload
THS50
THS25
THS15
THS10
0.1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 20 25 30 40 60
30
25
20
15
10
5
0
Multiples of Rated Power
Duration of Overload (secs)
This graph indicates the amount that the rated power (at 20°C) of the standard HS
Series resistor may be increased for overloads of 100mS to 60S
0 20 60 100 150 200 250 300
200
100
0
Surface Temp. Rise (°C)
Power Dissipation (Watts)
For resistor mounted on standard heatsink, related to power dissipation
THS10
THS15
THS50
THS25
Surface Temperature Rise
How to Order
THS 50 680R J
Common Part
10 Watt = THS10
15 Watt = THS15
25 Watt = THS25
50 Watt = THS50
Power Rating
0.1ohm
(100 mille ohms)
R10
1ohm
(1000 mille ohms)
1R0
1K
(1000 ohms)
1KO
Resistance Value Tolerance
THS- Standard
NTHS - Low
Inductance
J - 5%
Pulse Energy THS10 to THS50
