• All specifications are subject to change without notice.
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003-02 / 20040206 / eb211_tr.fm
Sensors TR Series
Temperature Sensors
Temperature Responsive Reed Switches
For home electric appliances, industrial equipment, and all other
fields, there is demand for system equipment with increased
safety, performance, and functionality.
TDK temperature-responsive reed switches responds to these
requirements:
(1) Excellent precision of the temperature response operation
point.
(2) Long service life with little change over time.
(3) Direct control type temperature switch that provides both a
sensing and contact mechanism.
Demand for these products has grown due to such excellent char-
acteristics.
TDK combined ferrite core and applied magnetism technology to
provide temperature-responsive reed switches that have high pre-
cision, long life, and high reliability. TDK has developed a group of
products that fulfills a wide range of requirements.
CONSTRUCTION AND PRINCIPLE OF OPERATION
The basic structure of a temperature-responsive reed switch com-
prises a temperature-responsive ferrite magnet and a reed switch.
The reed switch is a magnetically responsive type switch that is
made by sealing two reeds, that are constructed from a magnetic
material, within a glass tube. A gap is formed at the center of the
switch between these reeds.
This reed switch is characterized in that the gap contact closes in
response to an axial direction magnetic field. At a characteristic
temperature, the saturation magnetic flux density of the tempera-
ture-responsive ferrite suddenly changes. The ferrite magnets con-
trol the magnetic flux so that formation of a magnetic circuit by the
reed switch and the ferrite magnets makes possible ON/OFF con-
trol of the reed switch contact.
In response to rising temperature, the contact closes for the make-
contact type switch (M type, normally open), and the contact opens
for the break-contact type switch (B type, normally closed).
FEATURES
• High accuracy switching temperature.
• Long service life.
These products have a long service life since the contacts of the
reed switch are sealed in a tube containing inert gas and the
reeds are unaffected by metal fatigue, etc.
• Excellent resistance to environmental conditions.
• Easy to use due to simplification of circuit design.
Conditions: Surroundings below switching temperature Surroundings above switching temperature
Break-contact (B) type (normally closed)
Make-contact (M) type (normally open)
NSNS
NSNS
Ferrite magnetFerrite magnet
Reed switch
Temperature-responsive ferrite
SN N
SContact “ON”
NS
NSNS
Contact “OFF”
NS
NS
NS
NS
NS
SN
SN S
N
Magnetic gap
Magnetic gap
Contact “OFF”Contact “ON”
NS
NS
NS
NS
• All specifications are subject to change without notice.
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Sensors TR Series
Temperature Sensors
Temperature Responsive Reed Switches
OPERATIONAL GOALS AND USAGE MODES OF TEMPERATURE-
RESPONSIVE REED SWITCHES
Operational Goal: prevention of excess temperature (prevention of
excessive heating by use of the temperature-
responsive reed switch to turn the heat source
OFF)
Type used: break-contact (B) type (normally closed)
Operational Goal: prevention of excessive heating (prevention of
excessive heating by use of the temperature-
responsive reed switch to turn the cooling equip-
ment ON)
Type used: make-contact (M) type (normally open)
Operational Goal: prevention of freezing (prevention of freezing by
use of the temperature-responsive reed switch
to turn the heat source ON)
Type used: break-contact (B) type (normally closed)
Operational Goal: prevention of abnormal temperature drop (pre-
vention of abnormal temperature drop by use of
the temperature-responsive reed switch to turn
the cooling equipment OFF)
Type used: break-contact (B) type (normally closed)
Operating
temperature
Reversal
temperature
Room
temperature
Heating
Time
OFF
ON
Temperature
Operating
temperature
Reversal
temperature
Room
temperature
Heating
Time
ON
OFF
Temperature
Room
temperature
Operating
temperature
Reversal
temperature
Natural
cooling
Time
ON
OFF
Temperature
Room
temperature
Operating
temperature
Reversal
temperature
Natural
cooling
Time
OFF
ON
Temperature
• All specifications are subject to change without notice.
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Sensors TR Series
Temperature Sensors
Temperature Responsive Reed Switches
Temperature range (˚C)
Function
Freezing
prevention
Air conditioning, gas-fired boilers, automatic vending
machines, water pipes, solar power systems
Ice production control
Refrigerators
Thermal control Pot type cookers, gas-fired pot type cookers,
automatic vending machines
Steam sensor Electric pot type cookers
Temperature
compensation Electronic ballast
Outside
temperature
response
Air conditioners
Thermal control Washing machines
Seedling growers, yogurt makers
Automatic vending machines
Prevention of
abnormal cooling
Moisture
condensation
prevention
VCRs
copier equipment
fax machines
Applications
–20 0 +20 +40 +60 +80 +100 +120 +140
Cold draft
prevention Air conditioners
Switching between
cooling and ventilation
Window fans
Temperature
monitoring
Automatic vending machines,
cooling water for internal combustion engines
Prevention of
abnormal excessive
heating
(including ventilation
detection)
Amplifiers, computers, and peripheral electronics,
kerosene stoves
Power supplies, power modules, power transistors
Solar power systems
• All specifications are subject to change without notice.
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Sensors TR Series
Temperature Sensors
Temperature Responsive Reed Switches
PRODUCT IDENTIFICATION
(1) Series
(2) Operating temperature
70: 70°C
This should be designated in the standard operating tempera-
ture range of the specifications.
(3) Contact operating mode
B: Break type M: Make type
(4) Contact power rating (Resistance load)
10:AC./DC.10W (AC./DC.130V max.)
50:AC.50W (AC.140V max.)
50S3:AC.50W (AC.242V max.)
(5) Outer casing configuration
No code:Bare material
F: Lead forming
PT, PV: Aluminum protected
M: Molded
(6) External leads and terminals
No code: Base material and molded type
1 : With outer casing, no external leads
2 : With external leads
3 : With external leads and terminals
• The specifications of the external leads and terminals are determined
individually.
(7) Individual specification code
Z: Catalog specification
BASIC CHARACTERISTICS
TR-70 B 50-F 1 Z
(1) (2) (3) (4) (5) (6) (7)
Contact operating mode B (Break type) M (Make type)
Standard operating temperature setting value (°C) According to the “Standard operating temperature setting value” table of each product.
Temperature
characteristics
Operating temperature
accuracy (°C) ±5 ±2.5 ±2.5 ±5 ±2.5
Temperature hysteresis (°C) 7max. 7max. 7max. 7max. 7max.
Power rating code 10 50 50S3 10 50
Max. contact power rating(W) AC./DC.10 AC.60.5
DC.10 AC.60.5 AC./DC.10 AC.60.5
DC.10
Max. contact voltage rating(V) AC./DC.130 AC./DC.140 AC.242 AC./DC.130 AC./DC.140
Max. contact current rating(A) AC./DC.0.1 AC./DC.0.5 AC.0.25 AC./DC.0.1 AC./DC.0.5
• All specifications are subject to change without notice.
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Sensors TR Series
Temperature Sensors
Temperature Responsive Reed Switches
BARE MATERIAL TYPE
SHAPES AND DIMENSIONS
BREAK-CONTACT (B) TYPE (ø5.2mm)
TR- B10
BREAK-CONTACT (B) TYPE (ø 7.0mm) MAKE-CONTACT (M) TYPE (ø 7.0mm)
TR-B50 TR-M50
TR- B50S3
BREAK-CONTACT (B) TYPE (ø 7.0mm) MAKE-CONTACT (M) TYPE (ø 7.0mm)
TR- B50-F TR- M50-F
TR- B50S3-F
BREAK-CONTACT (B) TYPE (ø 7.7mm) MAKE-CONTACT (M) TYPE (ø 7.7mm)
TR- B30AS TR- M30AS
ELECTRICAL CHARACTERISTICS
:Operating temperature is standard.
Operating temperature range –25 to +140°C
Part No. Contact
operating mode
Operating temperature
accuracy(°C)
Temperature
hysteresis(°C)
Max. contact
power rating(W)
Max. contact
voltage rating(V)
Max. contact
current rating(A) Weight(g)
TR- B10 B ±5 7max. AC./DC.10 AC./DC.130 AC./DC.0.1 1
TR- B50 B±2.5 7max.
AC.60.5
DC.10 AC./DC.140 AC./DC.0.55 2
TR- B50-F
TR- B50S3 B ±2.5 7max. AC.60.5 AC.242 AC.0.25 2
TR- B50S3-F
TR- B30AS B ±2.5 7max. DC.30 DC.100 DC.1 2
TR- M50 M±2.5 7max.
AC.60.5
DC.10 AC./DC.140 AC./DC.0.55 2.6
TR- M50-F
TR- M30AS M ±2.5 7max. DC.30 DC.100 DC.1 2
Part No. Contact
operating mode
Standard operating temperature setting value(°C)
–15–50 5 101520253035404550556065707580859095100105110115120125130
TR- B10 B
TR- B50 B
TR- B50-F
TR- B50S3 B
TR- B50S3-F
TR- B30AS B
TR- M50 M
TR- M50-F
TR- M30AS M
9.5
14
44.0(48.0)
ø5.2
ø0.52
11.5
21.5
55.0
ø7.0
ø0.6
17.0
21.5
55.0
ø7.0
ø0.6
10.5
ø0.6
10.5min.
21.5max.
31.0
ø7.0
ø0.6
10.5min.
21.5max.
31.0
ø7.0
17.0
10.5 1.5 ø7.7
33.3
21.5max.
17.0 1.5 ø7.7
33.3
21.5max.
Dimensions in mm
• All specifications are subject to change without notice.
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Sensors TR Series
Temperature Sensors
Temperature Responsive Reed Switches
ALUMINUM PROTECTED TYPE
SHAPES AND DIMENSIONS
TR- B50-PT2Z TR- B50-PV2Z
TR- M50-PT2Z TR- M50-PV2Z
ELECTRICAL CHARACTERISTICS
:Operating temperature is standard.
SAFETY STANDARDS APPROVED TYPE
UL:File No.E110074, CSA LR64887
SHAPES AND DIMENSIONS
ELECTRICAL CHARACTERISTICS
:Operating temperature is standard.
Operating temperature range –25 to +140°C
Part No. Contact
operating mode
Operating temperature
accuracy(°C)
Temperature
hysteresis(°C)
Max. contact
power rating(W)
Max. contact
voltage rating(V)
Max. contact
current rating(A) Weight(g)
TR- B50-PT2Z B ±2.5 7max. AC.60.5/DC.10 AC./DC.140 AC./DC.0.55 8.4
TR- B50-PV2Z B ±2.5 7max. AC.60.5/DC.10 AC./DC.140 AC./DC.0.55 8.4
TR- M50-PT2Z M ±2.5 7max. AC.60.5/DC.10 AC./DC.140 AC./DC.0.55 9
TR- M50-PV2Z M ±2.5 7max. AC.60.5/DC.10 AC./DC.140 AC./DC.0.55 6
Part No. Contact
operating mode
Standard operating temperature setting value(°C)
–10 –50 5 101520253035404550556065707580859095100105110115120125130
TR- B50-PT2Z B
TR- B50-PV2Z B
TR- M50-PT2Z M
TR- M50-PV2Z M
9±19±1
(White)(
Red)
53
30
ø4.2
450
8.6
4
0.6t
19
(White)(
Red)
9±1 9±1
53
28
450
8.6
Dimensions in mm
Operating temperature range –25 to +140°C
Dimensions in mm
9±19±1
(White)(
Red)
53
30
ø4.2
450
8.6
4
0.6t
19
Part No. Contact
operating mode
Operating temperature
accuracy(°C)
Temperature
hysteresis(°C)
Max. contact
power rating(W)
Max. contact
voltage rating(V)
Max. contact
current rating(A) Weight(g)
TR-PT001 C B ±2.5 7max. AC.60.5 AC.140 AC.0.55 2.8
TR-PT003 C B ±2.5 7max. AC.60.5 AC.242 AC.0.25 3.1
Part No. Contact
operating mode
Standard operating temperature setting value(°C)
–10 –50 5 101520253035404550556065707580859095100105110115120125130
TR-PT001 C B
TR-PT003 C B
• All specifications are subject to change without notice.
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Sensors TR Series
Temperature Sensors
Temperature Responsive Reed Switches
MOLDED TYPE
SHAPES AND DIMENSIONS
TR- B50-M
TR- B50S3-M
TR- M50-M
ELECTRICAL CHARACTERISTICS
:Operating temperature is standard.
Operating temperature range –25 to +140°C
Part No. Contact
operating mode
Operating temperature
accuracy(°C)
Temperature
hysteresis(°C)
Max. contact
power rating(W)
Max. contact
voltage rating(V)
Max. contact
current rating(A) Weight(g)
TR- B50-M B ±2.5 7max. AC.60.5
DC.10 AC./DC.140 AC./DC.0.55 3.7
TR- B50S3-M B ±2.5 7max. AC.60.5 AC.242 AC.0.25 3.7
TR- M50-M M ±2.5 7max. AC.60.5
DC.10 AC./DC.140 AC./DC.0.55 4.1
Part No. Contact
operating mode
Standard operating temperature setting value(°C)
–10 –50 5 101520253035404550556065707580859095100105110115120125130
TR- B50-M B
TR- B50S3-M B
TR- M50-M M
ø0.6
ø8.5
26
55.0 Dimensions in mm
• All specifications are subject to change without notice.
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Sensors TR Series
Temperature Sensors
Temperature Responsive Reed Switches
MOLDED TYPE WITH TERMINALS
These reed switches are highly compact molded products with
Faston® #110 terminals and a hole for screw mounting.
FEATURES
•These parts are ideal for the prevention of overheating in elec-
tronic circuits.
•They support operation at low signal levels (0.1mW).
•Lead wires can be easily connected.
•The resin-molded body offers excellent resistance to adverse
environmental conditions.
SHAPES AND DIMENSIONS
ELECTRICAL CHARACTERISTICS
:Operating temperature is standard. • Faston® is a registered trademark of Tyco Electronics AMP Corp. Inc.
MOLDED TYPE FOR AUTOMATIC INSERTION
SHAPES AND DIMENSIONS
ELECTRICAL CHARACTERISTICS
:Operating temperature is standard.
3
4.45
13.9
6.8
15
6.4
3.5
28max.
24
6.4
2.8
Dimensions in mm
ø3.3 ø6.8
Operating temperature range –25 to +140°C
Part No. Contact
operating mode
Operating temperature
accuracy(°C)
Temperature
hysteresis(°C)
Max. contact
power rating(W)
Max. contact
voltage rating(V)
Max. contact
current rating(A) Weight(g)
TR-M100- B B ±5 7max. AC./DC.10 AC./DC.120 AC./DC.0.1 2.8
TR-M110- M M ±5 7max. AC./DC.10 AC./DC.120 AC./DC.0.1 3.1
Part No. Contact
operating mode
Standard operating temperature setting value(°C)
30 35 40 45 50 55 60 65 70 75 80 85 90 95 100105 110115120 125130
TR-M100- B B
TR-M110- M M
37.5
43.18
45.18
3
9
3
2.5
ø0.5
6.5
63.5
Dimensions in mm
Operating temperature range –25 to +140°C
Part No. Contact
operating mode
Operating temperature
accuracy(°C)
Temperature
hysteresis(°C)
Max. contact
power rating(W)
Max. contact
voltage rating(V)
Max. contact
current rating(A) Weight(g)
TR-M500- B B ±5 7max. 10 120 0.1 2.8
TR-M510- M M ±5 7max. 10 120 0.1 3.1
Part No. Contact
operating mode
Standard operating temperature setting value(°C)
30 35 40 45 50 55 60 65 70 75 80 85 90 95 100105 110115120 125130
TR-M500- B B
TR-M510- M M
• All specifications are subject to change without notice.
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Sensors TR Series
Temperature Sensors
Temperature Responsive Reed Switches
CR1 TYPE
Optimum products for high precision temperature measurement or
control.
These products are designed to be appropriate for attachment to
an aluminum heat radiator plate and for detection of the radiator
plate surface temperature.
APPLICATIONS
Air conditioning, power supply circuits
SHAPES AND DIMENSIONS
TR- B10-CR1
ELECTRICAL CHARACTERISTICS
:Operating temperature is standard.
Operating temperature range –20 to +130°C
Part No. Contact
operating mode
Operating temperature
accuracy(°C)
Temperature
hysteresis(°C)
Max. contact
power rating(W)
Max. contact
voltage rating(V)
Max. contact
current rating(A) Weight(g)
TR- B10-CR1 B ±2.5 7max. 3 30 0.1 3
Part No. Contact
operating mode
Standard operating temperature setting value(°C)
60 65 70 75 80 85 90 95 100 105 110
TR- B10-CR1 B
30.9
12
ø4.2
0.23
14.85
6.5
8.35
4.75
6.5±0.3
21.8
3.7
6.35
Dimensions in mm
• All specifications are subject to change without notice.
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003-02 / 20040206 / eb211_tr.fm
Sensors TR Series
Temperature Sensors
Temperature Responsive Reed Switches
LTS TYPE
Optimum products for high precision temperature measurement or
temperature control in liquids.
In order to improve temperature response, these products have
been designed with the temperature-responsive ferrite attached to
the exterior for detection of temperature within a liquid.
APPLICATIONS
Heated water bidet type toilet seat
SHAPES AND DIMENSIONS
TR-LTS- B
ELECTRICAL CHARACTERISTICS
:Operating temperature is standard.
Operating temperature range –10 to +60°C
Part No. Contact
operating mode
Operating temperature
accuracy(°C)
Temperature
hysteresis(°C)
Max. contact
power rating(W)
Max. contact
voltage rating(V)
Max. contact
current rating(A) Weight(g)
TR-LTS1- B B ±2.5 7max. 3 30 0.1 5
Part No. Contact
operating mode
Standard operating temperature setting value(°C)
10 15 20 25 30 35 40 45 50 55 60
TR-LTS1- B B
30.5+0
–0.4
R1.6+0.2
–0
22.0±0.2
R3.5
12
10.423max.
3.2
240±10
5
ø8.3max.
ø8.0±0.1
Tolerance: ±0.2
Dimensions in mm
