TD Over Current Detector
Description
Hall effect type current sensor with a single digital output factory
programmed to go low when a given current threshold is exceed-
ed. The TD Series is able to operate within a temperature range of
-40
o
C to 125
o
C and has a fast response time of 1!s (typical). The
miniature package size allows the TD series to be mounted on
printed circuit boards and is integrated with an open collector dig-
ital output which is ideal for interfacing to control circuitry.
Typical Applications
Welding equipment, servo drives, treadmills, automotive power
conversion, power supplies, home audio, MRI equipment
Series TD
Ordering Information
Type No
TD
Over Current Detector
Trip Point
015
15 Amp
020
20 Amp
025
25 Amp
030
30 Amp
035
35 Amp
040
40 Amp
045
45 Amp
050
50 Amp
055
55 Amp
060
60 Amp
065
65 Amp
070
70 Amp
075
75 Amp
080
80 Amp
085
85 Amp
090
90 Amp
095
95 Amp
100
100 Amp
105
105 Amp
110
110 Amp
115
115 Amp
120
120 Amp
125
125 Amp
TD -
025
= ordering example
Technical Data
Absolute Maximum Ratings
Supply Voltage
Voltage Externally Applied to
Output
Output ON current (sink)
Operating Temp Range
Sensed Current
RMS voltage for AC isolation
test, 50/60 Hz, 1 minute
-1.0 to +25 VDC
+25 VDC max (Output high, current
below Itrip)
-0.5 VDC min (Output high or low)
50 mA
-40
o
C to +125
o
C
+/- 500 Amp peak
2.5 kVac
Absolute maximum ratings are the extreme limits that the detector will withstand without dam-
age. Electrical operation and characteristics are not guaranteed as the maximum limits are
approached. Proper application of the detector must ensure that the detector operates within
the operating characteristics below.
Operating Characteristics
Symbol
V
s
I
s
I
s
T
trip
V
os
I
os
Min
3.8
-40
1.0
0.15
Typ.
Max
24.0
10.0
125
2.5
0.40
20
Notes
VDC
mA
o
C
!S,
di/dt=I
trip
/!S
VDC sinking 20 mA
mA
Supply Voltage
Supply Current
Operating Temperature
Output Trip Time
Output ON Voltage
Output ON Current
Note 1: Detector sensitive to unidirectional current as defined in mechanical dimension drawing
01/2009
www.e-t-a.com
1551 Bishop Ct.; Mt. Prospect , IL 60056
P: (847) 827-7600 F: (847) 827-7655
!0 1+er &'rrent 0ete2tor
!ri$ &'rrent +,. !e.$erat're
!i#ure 5 -
FGA!>&
60
50
Trip Point (Amps)
Trip Point (Amps)
!i#ure 6 -
FGA!&!
70
60
50
40
30
20
10
40
30
20
10
0
40 20 0
20 40 60 80 100 120
Temperature (C)
0
40
20
0
20
40
60
80
100 120
Temperature (C)
Maximum
Typical
Minimum
!i#ure 7 -
FGA!?&
100
90
80
Maximum
Typical
Minimum
!i#ure 8 -
FGA"!!
140
120
Trip Point (Amps)
60
50
40
30
20
10
0
40 20
0
20
40
60
80
100 120
Trip Point (Amps)
70
100
80
60
40
20
0
40 20
0
20
40
60
80
100 120
Temperature (C)
Temperature (C)
Maximum
Typical
Minimum
!i#ure 9 -
FGA"$&
160
140
120
Maximum
Typical
Minimum
Trip Point (Amps)
100
80
60
40
20
0
40 20
0
20
40
60
80
100 120
Temperature (C)
Maximum
Typical
Minimum
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0.660"
TD50
R 0.047"
R 0.250"
R 0.085"
0.253"
Dimensions are in inches
Dimensional tolerances unless otherwise
specified: +/- 0.010”
0.160" MAX
0.363"
0.313"
0.535" MAX
0.112" +/- 0.025"
0.104"
0.015" +/- 0.002" SQUARE
Pin
1
2
3
4
5
Desc.
Vo
GND
Vs
Iin
Iout
4
0.275"
0.160"
0.325"
0.660"
0.050" X 2
1
2
3
CURRENT CONVENTION: CURRENT TO BE
DETECTED FLOWS INTO TERMINAL 4 AND
OUT OF TERMINAL 5.
5
0ri&4e5 6ir#ui4 8-%r5 !-u&4i&g F--4:ri&4
Solder side
(component side view)
C1
A1
A2
A3
C2
C2
A1
A2
A3
Component side
(component side view)
C1
;-(e <-#%4i-& 6$%r4
;-(e *e,#ri:4i-& 6$%r4
Hole
A
C
Finished
diameter
!.!$7”
!.1$!”
Top Pad
!.!L&”
!.$!!”
Bottom Pad
!.!L&” x !.1!!”
!.$!!”
Hole
A1
A2
A3
C1
C2
X
0.275”
0.275”
0.275”
0.000
0.000
Y
-0.110”
-0.160”
-0.210”
0.000
-0.325”
Notes:
1. Center aperture of detector located at C1, X=0.000, Y=0.000
2. Hole diameter tolerance +/- 0.003”
3. Hole location tolerance +/- 0.003”
!1#$!!9
www.e-t-a.com
1&&1 Bishop Ct.1 2t. Prospect , I9 :!!&:
P; <=>7@ =$7-7:!! F; <=>7@ =$7-7:&&
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