475475
Resistive
Position Sensors
Linearity
Exclusive for headlight angle detection with high
accuracy and space-saving design
Linear Type （Exclusively Used to Detect the Angle of Vehicle Head Lights）
RD7
Product Line
For linearity, various specifications will be available, depending on the applications.
Please consult with us when placing your orders.
Note
Refer to P.477 for product specications.
Refer to P.478 for soldering conditions.
Packing Specifications
Tray
■Typical Specifications
Items Specifications
Rated Voltage
12V DC
Operating life
2N max.
Total resistance
100,000 cycles
Operating temperature range
−40℃ to ＋105℃
Drawing
No.
Travel
（mm） Mounting method Total resistance
（k Ω） Model No.
Minimum order unit （pcs.）
Japan Export
8
Vertical type 4.7
±1％
RD708A029A
2,000 4,000
Horizontal type 5
RD7081015A
1, 5 0 0 3,000
9RD7091008A
1, 8 0 0 3,600
12
Vertical type 2.2 RD712A028A
2,000 4,000
Horizontal type 10 RD7121008A
1, 8 0 0 3,600
1
2
3
1
4
Model No. Mounting
method
Number of packages （pcs.） Export package
measurements （mm）
1 case /Japan
1 case /export packing
RD708
Vertical 2,000 4,000 363×527×215
Horizontal
1, 5 0 0 3,000 363×507×216
RD709 1, 8 0 0 3,600 364×508×19 2
RD712
Vertical 2,000 4,000 363×527×215
Horizontal 1, 8 0 0 3,600 363×507×216
476476
Resistive
Position Sensors
0.5 max.
9
9
（3.4）
15.8
（Travel）
4
1.6
R0.3
0.8 max.
0.3
0.8
（11.4）
3.7
2.75
2.75
C0.3
0.6
2.5
(5)
0.4
4
ø2.05
2T
1T
3T
3
RD7091
Circuit diagram
3T
2T 1T
2
15
10
0.7 max.
C
3.8
1.5
1.85
0.3
(10.5)
0.8 max.
4.5
8
9.65
3.4
2T
1T
3T
ø2
(11.6)
0.6
C0.3
(5)
4
(Travel)
Reference for mounting
Mounting face
RD7081
Circuit diagram
3T
2T 1T
4
RD7121
Circuit diagram
3T
2T 1T
Dimensions Unit:mm
No.
1
StylePhoto
RD708A
RD712A
RD708A 8 15 3.4
Dimension
Model
AS
RD712A 12 19 3.8
B
C0.3
ø2
4
（5）
0.6
A3T 1T 2T
10
（11.6）
1.5
0.8 max. 3.5
S4
3
B
0.3 （3）
1.55
Travel
5
Mounting face
Circuit diagram
3T
2T 1T
Linear Type （Exclusively Used to Detect the Angle of Vehicle Head Lights）
RD7
477477
Resistive
Position Sensors
Method for Regulating the Linearity
With rated voltage applied between terminals 1 and 3, the straight line which
connects the measured output values VB and VA at specied reference positions
B and A is assumed to be an ideal straight line, so that deviation against the ideal
straight line when the voltage applied between terminals 1 and 3 is assumed to be
100％ can be expressed as a percentage.
（Mechastroke）
Position BPosition A
VA
VB
AB
Model RDC80
4T output
2T output
±3%
±3%
±165˚
±165˚
180˚（phase difference）
Output voltage ratio（%）
2. The center is in the configuration diagram condition
1. Reference taper : 100% / 340˚
100
0
50
0˚
center
Model RDC40
Output voltage ratio（%）
0
0
5
100
VA
13 rotations
±1%
1. Reference taper : 90%/13rotations
2. VA is measured output value
Output voltage ratio（%）
0
0
5
100
VA
13 rotations
±1%
1. Reference taper : 90%/13rotations
2. VA is measured output value
Model RDC10 / RD7
0
0˚
100
B
50
C
1. Reference taper：100％/A
2. Index point is 50% output point(RDC50/RDC90/RDCC0)
Output voltage ratio（%）
The center is in the configuration diagram condition
Model RDC50 / RDC90 / RD6R1A / RDCC0
〔Total Resistance〕
The total resistance, with the shaft （lever） placed at the end of terminal 1 or 3, shall be determined by
measuring the resistance between the resistor terminals 1 and 3 unless otherwise specied.
〔Rating Voltage〕
The rating voltage corresponding to the rated power shall be determined by the following equation. When the
resulting rated voltage exceeds the maximum operating voltage of a specic resistor, the maximum operating
voltage shall be taken as the rated voltage.
Resistive Position Sensor
E=√
P
・R
E：Rated voltage
（V）
P：Rated power
（W）
R：
Total nominal resistance
（
Ω
）
Resistive Position Sensors / Product Specifications
Series ABC
RDC50 333.3° ±16 0 ° ±2％
RDC90
80° ±30°
±3％
260° ±12 2 °
RD6R1A 320° ±15 5 ° ±2％
RDCC0 30° ±15 ° ±2％
Resistive Position Sensors / Measurement and Test Methods
465465
Resistive
Position Sensors
Type Linear Type
Series
RDC1010 RDC10 ※RD7
Photo
Direction of lever
Vertical Vertical Horizontal
Effective electrical angle （°）
ー ー ー
Linearity guarantee range （°）
ーーー
Travel
10 m m
14 m m
22mm
32mm
47mm
8mm
12 m m
8mm
9mm
12 m m
Operating temperature range
−30℃ to ＋85℃ − 4 0 ℃ t o ＋10 5 ℃
Operating life
50,000 cycles 200,000 cycles 100,000 cycles
Available for automotive use
ー● ●
Life cycle (availability)
Mechanical
performance
Operating force
0.25N max. 2N ma x .
Rotational torque
ーーー
Electrical
performance
Total resistance
tolerance
±30% ±20%
Linearity （%）
±0.5 ±1
Rated voltage
（V DC）
512
Environmental
performance
Cold
−40℃ 240h −40℃ 96h
Dry heat
80 ℃ 240h 90 ℃ 240h 10 5 ℃ 9 6h
Damp heat
60℃, 90 to 95%RH 240h 40℃, 90 to 95%RH 96h
Terminal style
Insertion Lead terminal/Insertion Insertion
Page
472 475
Resistive Position Sensors Measurement and Test Methods ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 477
Resistive Position Sensors Soldering Conditions・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 478
Resistive Position Sensors Cautions ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 479
Notes
1. ※ The RD7 series are used to detect vehicle headlight angles.
2. ● Indicates applicability to all products in the series.
NEW
478478
Resistive
Position Sensors
Reference for Manual Soldering
Example of Reflow Soldering Condition
Reference for Dip Soldering
I max.
H max.
300
200
100
Room
temperature
Pre-heating
E max.
Time（s）
Temperature（℃）
A
B
C
D
F max.
G max.
Series Tip temperature Soldering time
RDC50, RDC90, RDC80 350±5℃ 3 s
RDC10, RD7 350℃ max. 3s max.
Series
Preheating Dip soldering
No. of solders
Soldering surface
temperature Heating time Soldering
temperature Soldering time
RDC501, RDC502 10 0 t o 15 0 ℃ 1minute max. 260±5℃ 10 ±1s 1 time
RD7 10 0℃ ma x . 1minute max. 260℃ max. 5s max. 1 time
+1
0
1. Cleaning Cleaning should not be attempted.
2. Type of solder to be used Use cream solder that contains 10 to 15 %wt flux.
3. Number of solder applications - apply solder only once
4. Recommended reflow conditions
1. When using an infrared reflow oven, solder may not always be applied as intended.
Be sure to use a hot air reflow oven or a type that uses infrared rays in combination with hot air.
2. The temperatures given above are the maximum temperatures at the terminals of the sensor when employing a hot air
　 reflow method. The temperature of the PC board and the surface temperature of the sensor may vary greatly depending
　on the PC board material, its size and thickness. Ensure that the surface temperature of the sensor does not rise to 250℃
　 or greater.
3. Conditions vary to some extent depending on the type of reflow bath used. Be sure to give due consideration to this prior to use.
Notes
Resistive Position Sensors / Soldering Conditions
Series A B C D E F G H I No. of
reflows
RDC503
RDC506 250℃ 230℃ 18 0 ℃ 15 0 ℃ 2min. ー5s 40s 4min. 1 time
RDC90 255℃ 230℃ ーーー2min. 10 s 1m i n . 4min. 1 time
RDC80 250℃ ー18 0 ℃ 15 0 ℃ 90±30s ー10 ±1s ー ー 1 time