ETC RXE065K

RXE(7) 1/15/99 11:44 AM Page 165
RXE Selection Guide
and Product Data
This section has two parts:
• A Selection Guide that walks you through the process of
selecting the correct RXE device for a circuit.
• Product Data that outlines electrical characteristics,
physical characteristics, agency recognitions, environmental
specifications, component layouts, tape and reel specifications,
and ordering information for RXE devices.
RXE Selection Guide
Follow these seven steps to select a PolySwitch RXE device for
a circuit:
1. Define the operating parameters for the circuit.
These include:
• Maximum ambient operating temperature
• Normal operating current
• Maximum operating voltage (RXE is 60 V maximum)
• Maximum interrupt current
2. Select the RXE device that accommodates the circuit’s maximum
ambient operating temperature and normal operating current.
3. Compare the RXE device’s maximum operating voltage and
maximum interrupt current with the circuit’s to be sure the circuit
does not exceed the device ratings.
4. Check the RXE device’s time-to-trip to be sure it will protect the
circuit.
5. Verify that the circuit’s ambient operating temperatures are within the
RXE device’s operating temperature range.
6. Verify that the RXE device’s dimensions fit the application’s space
considerations.
7. Independently evaluate and test the suitability and performance
of the RXE device in the application.
®

Raychem Circuit Protection Devices
TUV Rheinland
RXE Devices
165
4
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RXE
Radial Leaded
1. Define the circuit’s operating parameters.
Fill in the following information about the circuit:
Maximum ambient operating temperature
________________
Normal operating current
________________
Maximum operating voltage (RXE is 60 V max.)
________________
Maximum interrupt current
________________
2. Select the PolySwitch RXE device that will accommodate the
circuit’s maximum ambient operating temperature and
mal operating current.
nor-
Look across the top of the table on the next page to find the temperature that most closely matches the circuit’s maximum ambient operating temperature. Look down that column to find the value equal to or
greater than the circuit’s normal operating current. Now look to the far
left of that row to find the part number for the RXE device that will best
accommodate the circuit.
4
The thermal derating curve located on the next page is a normalized
representation of the data in the table located on the same page.
166
RXE Devices
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RXE
Radial Leaded
IHold vs. temperature
Part
number
RXE010
RXE017
RXE020
RXE025
RXE030
RXE040
RXE050
RXE065
RXE075
RXE090
RXE110
RXE135
RXE160
RXE185
RXE250
RXE300
RXE375
Maximum ambient
–40°
–20°
0.16
0.14
0.26
0.23
0.31
0.27
0.39
0.34
0.47
0.41
0.62
0.54
0.78
0.68
1.01
0.88
1.16
1.02
1.40
1.22
1.71
1.50
2.09
1.84
2.48
2.18
2.87
2.52
3.88
3.40
4.65
4.08
5.81
5.10
operating temperatures (°C)
0°
20°
40°
50°
0.12
0.10
0.08
0.07
0.20
0.17
0.14
0.12
0.24
0.20
0.16
0.14
0.30
0.25
0.20
0.18
0.36
0.30
0.24
0.22
0.48
0.40
0.32
0.29
0.60
0.50
0.41
0.36
0.77
0.65
0.53
0.47
0.89
0.75
0.61
0.54
1.07
0.90
0.73
0.65
1.31
1.10
0.89
0.79
1.61
1.35
1.09
0.97
1.90
1.60
1.30
1.15
2.20
1.85
1.50
1.33
2.98
2.50
2.03
1.80
3.57
3.00
2.43
2.16
4.46
3.75
3.04
2.70
60°
0.06
0.11
0.13
0.16
0.19
0.25
0.32
0.41
0.47
0.57
0.69
0.85
1.01
1.17
1.58
1.89
2.36
70°
0.05
0.09
0.11
0.14
0.16
0.22
0.27
0.35
0.41
0.49
0.59
0.73
0.86
1.00
1.35
1.62
2.03
85°
0.04
0.07
0.08
0.10
0.12
0.16
0.20
0.26
0.30
0.36
0.44
0.54
0.64
0.74
1.00
1.20
1.50
4
Thermal derating curve
Percent of rated hold
and trip current
200
150
100
50
0
–40
–20
0
20
40
60
80
Device’s ambient temperature (°C)
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RXE Devices
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RXE
Radial Leaded
3. Compare maximum operating voltages and maximum
interrupt currents.
Look down the first column of the table below to find the part number
you selected in Step 1. Look to the right in that row to find the device’s
maximum operating voltage (V max.) and maximum interrupt current
(I max.).
Compare both ratings with the circuit’s to be sure the circuit’s ratings
do not exceed those of the RXE device.
Maximum device voltages and currents
4
Part
number
V max.
(volts)
I max.*
(amps)
RXE010
RXE017
RXE020
RXE025
RXE030
RXE040
RXE050
RXE065
RXE075
RXE090
RXE110
RXE135
RXE160
RXE185
RXE250
RXE300
RXE375
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
* Devices may withstand higher interrupt current at lower voltages.
Each application will need to be individually qualified.
168
RXE Devices
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RXE
Radial Leaded
4. Determine time-to-trip.
Time-to-trip is the amount of time it takes for a device to switch to a
high-resistance state once a fault current has been applied across the
device.
Identifying the RXE device’s time-to-trip is important in order to provide
the desired protection capabilities. If the device you choose trips
too fast, undesired or nuisance tripping will occur. If the device trips too
slowly, the components being protected may be damaged before the
device switches to a high-resistance state.
The chart below shows the typical time-to-trip at 20°C for each
PolySwitch RXE device. For example, the chart indicates that the
typical time-to-trip for RXE050 at 5 A is 0.3 second.
On the chart below, find the typical time-to-trip for the RXE device you
selected. If the RXE device’s time-to-trip is too fast or too slow for the
circuit, go back to Step 2 and choose an alternate device.
Typical time-to-trip at 20°C
4
RXE010
RXE017
RXE020
RXE025
RXE030
RXE040
RXE050
RXE065
RXE075
RXE090
RXE110
RXE135
RXE160
RXE185
RXE250
RXE300
RXE375
1000
B CDE F G H I J K L M N OPQ
100
10
Time-to-trip (s)
A=
B=
C=
D=
E=
F=
G=
H=
I =
J =
K=
L=
M=
N=
O=
P=
Q=
A
1
0.1
0.01
0.001
0.1
1
10
100
Fault current (A)
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RXE Devices
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RXE
Radial Leaded
5. Verify ambient operating conditions.
Ensure that your application’s minimum and maximum ambient
temperatures are within the operating temperature range of –40°C
and 85°C.
Maximum device surface temperature in the tripped state is 125°C.
6. Verify the RXE device’s dimensions.
Using dimensions from the table below, compare the dimensions of the
RXE device you selected with the application’s space considerations.
Product dimensions (millimeters/inches)
Part
A
number
4
RXE010
RXE017
RXE020
RXE025
RXE030
RXE040
RXE050
RXE065
RXE075
RXE090
RXE110
RXE135
RXE160
RXE185
RXE250
RXE300
RXE375
max.
7.4 (0.29)
7.4 (0.29)
7.4 (0.29)
7.4 (0.29)
7.4 (0.29)
7.6 (0.30)
7.9 (0.31)
9.7 (0.38)
10.4 (0.41)
11.7 (0.46)
13.0 (0.51)
14.5 (0.57)
16.3 (0.64)
17.8 (0.70)
21.3 (0.84)
24.9 (0.98)
28.5 (1.12)
Lead size
RXE010–RXE090
RXE110–RXE375
B
C
D
E
max.
12.7 (0.50)
12.7 (0.50)
12.2 (0.48)
12.7 (0.50)
13.0 (0.51)
13.5 (0.53)
13.7 (0.54)
14.5 (0.57)
15.2 (0.60)
15.8 (0.62)
18.0 (0.71)
19.6 (0.77)
21.3 (0.84)
22.9 (0.90)
26.4 (1.04)
30.0 (1.18)
33.5 (1.32)
typ.
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
10.2 (0.40)
10.2 (0.40)
10.2 (0.40)
min.
7.6 (0.30)
7.6 (0.30)
7.6 (0.30)
7.6 (0.30)
7.6 (0.30)
7.6 (0.30)
7.6 (0.30)
7.6 (0.30)
7.6 (0.30)
7.6 (0.30)
7.6 (0.30)
7.6 (0.30)
7.6 (0.30)
7.6 (0.30)
7.6 (0.30)
7.6 (0.30)
7.6 (0.30)
max.
3.1 (0.12)
3.1 (0.12)
3.1 (0.12)
3.1 (0.12)
3.1 (0.12)
3.1 (0.12)
3.1 (0.12)
3.1 (0.12)
3.1 (0.12)
3.1 (0.12)
3.1 (0.12)
3.1 (0.12)
3.1 (0.12)
3.1 (0.12)
3.1 (0.12)
3.1 (0.12)
3.1 (0.12)
RXE010–RXE090*
Ø 0.51
(0.020)
24 AWG
A
A
Marking
E
Marking
Ø 0.81
(0.032)
20 AWG
B
B
D
D
170
RXE Devices
F
C
CL
CL
1.1
1.6
1.1
1.1
1.1
1.1
1.1
1.1
1.1
1.1
1.4
1.4
1.4
1.4
1.4
1.4
1.4
RXE110–RXE375**
E
* Straight leads are available.
** Kinked leads are available.
F
typ.
(0.04)
(0.06)
(0.04)
(0.04)
(0.04)
(0.04)
(0.04)
(0.04)
(0.04)
(0.04)
(0.06)
(0.06)
(0.06)
(0.06)
(0.06)
(0.06)
(0.06)
CL CL
F
C
CL
CL
CL CL
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RXE
Radial Leaded
RXE Product Data
Now that you have selected your RXE device, please review the
device’s characteristics in this section to verify that the device will
perform as required.
Electrical characteristics (20°C)
Part
Number
RXE010
RXE017
RXE020
RXE025
RXE030
RXE040
RXE050
RXE065
RXE075
RXE090
RXE110
RXE135
RXE160
RXE185
RXE250
RXE300
RXE375
IH
(A)
0.10
0.17
0.20
0.25
0.30
0.40
0.50
0.65
0.75
0.90
1.10
1.35
1.60
1.85
2.50
3.00
3.75
IT
(A)
0.20
0.34
0.40
0.50
0.60
0.80
1.00
1.30
1.50
1.80
2.20
2.70
3.20
3.70
5.00
6.00
7.50
Max. time
to trip (s)
at 5 x IH
4.0
3.0
2.2
2.5
3.0
3.8
4.0
5.3
6.3
7.2
8.2
9.6
11.4
12.6
15.6
19.8
24.0
Pd
(W)
0.38
0.48
0.41
0.45
0.49
0.56
0.77
0.88
0.92
0.99
1.50
1.70
1.90
2.10
2.50
2.80
3.20
Initial resistance
R min.
R max.
(Ω)
(Ω)
2.50
4.50
3.30
5.21
1.83
2.75
1.25
1.95
0.88
1.33
0.55
0.86
0.50
0.77
0.31
0.48
0.25
0.40
0.20
0.31
0.15
0.25
0.12
0.19
0.09
0.14
0.08
0.12
0.05
0.08
0.04
0.06
0.03
0.05
Post-trip resistance
R1 max .
(Ω)
7.50
8.00
4.40
3.00
2.10
1.29
1.17
0.72
0.60
0.47
0.38
0.30
0.22
0.19
0.13
0.10
0.08
IH = Hold current—maximum current at which the device will not trip at 20°C.
IT = Trip current—minimum current at which the device will always trip at 20°C.
Pd = Typical power dissipation—typical amount of power dissipated by the device when in tripped state in 20°C still air.
R min. = Minimum device resistance at 20°C prior to tripping.
R max. = Maximum device resistance at 20°C prior to tripping.
R1 max. = Maximum device resistance at 20°C measured 1 hour post trip.
Physical characteristics
Lead material
Soldering characteristics
Insulating material
RXE010: Tin coated nickel-copper alloy, 24 AWG, ∅ 0.51 mm/0.020 in
RXE017–040: Tin/lead-plated copper-clad steel, 24 AWG, ∅ 0.51 mm/0.020 in
RXE050–090: Tin/lead-plated copper, 24 AWG, ∅ 0.51 mm/0.020 in
RXE110–375: Tin-plated copper, 20 AWG, ∅ 0.81 mm/0.032 in
Solderability per MIL-STD-202, Method 208E
Solder heat withstand per MIL-STD-202, Method 210, Condition B
Cured, flame-retardant epoxy polymer; meets UL 94V-O
requirements
Note: Devices are not designed to be placed through a reflow process.
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RXE Devices
171
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RXE
Radial Leaded
Agency recognitions
UL
CSA
TU¨V
File # E74889
File # CA78165C
Certificate # R9477354
Environmental specifications
Test
Passive aging
Test method
Raychem PS300
Humidity aging
Thermal shock
Solvent resistance
Raychem PS300
Raychem PS300
Raychem PS300, Method 215
Conditions
70°C, 1000 hours
85°C, 1000 hours
85°C, 85% R.H., 1000 hours
125°C, –55°C (10 times)
MIL-STD-202, Method 215F
Resistance change
±5%
±5%
±5%
±5%
No change
Component layouts
4
The dimensions in the table below provide the component layout for
each RXE device.
Component layout dimensions (millimeters/inches)
B
A
B
172
RXE Devices
Device
RXE010
RXE017
RXE020
RXE025
RXE030
RXE040
RXE050
RXE065
RXE075
RXE090
RXE110
RXE135
RXE160
RXE185
RXE250
RXE300
RXE375
A
nom.
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
5.1 (0.20)
10.2 (0.40)
10.2 (0.40)
10.2 (0.40)
B
max.
1.0 (0.04)
1.7 (0.07)
1.0 (0.04)
1.0 (0.04)
1.0 (0.04)
1.2 (0.05)
1.2 (0.05)
1.5 (0.06)
1.5 (0.06)
1.5 (0.06)
1.2 (0.05)
1.2 (0.05)
1.5 (0.06)
1.5 (0.06)
1.7 (0.07)
2.0 (0.08)
2.0 (0.08)
Raychem Circuit Protection Devices
RXE(7) 1/15/99 11:44 AM Page 173
RXE
Radial Leaded
Tape and reel specifications (dimensions in millimeters)
Product availability: RXE010–RXE185
Devices taped using EIA468–B/IEC286-2 standards. See table below and Figures 1 and 2 for details.
Dimension
description
Carrier tape width
Hold down tape width
Top distance between tape edges
Sprocket hole position
Sprocket hole diameter*
Abscissa to plane (straight lead)
Abscissa to plane (kinked lead)
Abscissa to top: RXE010-RXE090
Abscissa to top: RXE110-RXE185*
Overall width w/lead protrusion: RXE10-RXE90
Overall width w/o lead protrusion: RXE135-RXE185*
Lead protrusion
Protrusion of cutout
Protrusion beyond hold-down tape
Sprocket hole pitch: RXE010-RXE090
Sprocket hole pitch*
Pitch tolerance
Device pitch: RXE010-RXE090
Device pitch: RXE110-RXE185
Tape thickness
Tape thickness with splice
Splice sprocket hole alignment
Body lateral deviation
Body tape plane deviation
Ordinate to adjacent component lead*
Lead spacing*
Reel width: RXE090-RXE135*
Reel width: RXE160-RXE185*
Reel diameter
Space between flanges less device*
Arbor hole diameter
Core diameter*
Box
Consecutive missing places
Empty places per reel
EIA
mark
W
W4
W6
W5
D0
H
H0
H1
H1
C1
C2
L1
L
l2
P0
P0
IEC
mark
W
W0
W2
W1
D0
H
H0
H1
H1
t
t1
t
∆h
∆p
P1
F
w2
w2
a
w1
c
n
∆h
∆p
P1
F
w
w
d
I1
L
l2
P0
P0
f
h
Dimensions
Dim. (mm)
18
11
3
9
4
18.5
16
32.2
37.6
43.2
46.6
1.0
11
Not specified
12.7
25.5
20 consec.
12.7
25.4
0.9
2.0
0
0
0
3.81
5.08
56
63.5
370
4.75
26
91
56/372/372
None
0.1% max.
Tol. (mm)
–0.5/+1.0
min.
max.
–0.5/+0.75
–0.32/+0.2
± 3.0
± 0.5
max.
max.
max.
max.
max.
max.
4
±0.3
±0.5
±1
max.
max.
±0.3
±1.0
±1.3
±1.0
±0.8
max.
max.
max.
-3.25/+9.25
±12.0
max.
max.
* Differs from EIA specification.
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RXE Devices
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RXE
Radial Leaded
Figure 1: EIA Referenced Taped Component Dimensions
∆h
∆p
∆h
∆p
Reference plane
P1
H1
H1 C1
H C2
F
A
L
H0
B
W4
W5
W
I2
L1
D0
P0
Direction of unreeling
Cross section A - B
t
4
Figure 2: Reel Dimensions
Reel
Upper side
n
Tape
a
Direction
of
unreeling
Lower side
c
w1
w2
174
RXE Devices
Cross section
Optional shape: Circular or polygonal
Raychem Circuit Protection Devices
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RXE
Radial Leaded
Ordering information
Product
description
Bag
quantity
RXE010
RXE010-2
RXE010-AP
RXE017
RXE017-2
RXE017-AP
RXE020
RXE020-2
RXE020-AP
RXE025
RXE025-2
RXE025-AP
RXE030
RXE030-2
RXE030-AP
RXE040
RXE040-2
RXE040-AP
RXE050
RXE050-2
RXE050-AP
RXE065
RXE065-2
RXE065-AP
RXE075
RXE075-2
RXE075-AP
RXE090
RXE090-2
RXE090-AP
RXE0110
RXE110-2
RXE110-AP
RXE135
RXE135-2
RXE135-AP
RXE160
RXE160-2
RXE160-AP
RXE185
RXE185-2
RXE185-AP
RXE250
RXE300
RXE375
500
Tape and reel
quantity
AMMO
pack
3000
2000
500
2500
1500
500
3000
2000
500
3000
2000
500
3000
2000
500
3000
2000
500
3000
2000
500
3000
2000
500
3000
2000
500
3000
2000
500
1500
1000
500
1500
1000
500
1500
1000
500
1500
500
500
500
*
*
*
1000
*
*
*
Standard
package
10000
15000
10000
10000
12500
7500
10000
15000
10000
10000
15000
10000
10000
15000
10000
10000
15000
10000
10000
15000
10000
10000
15000
10000
10000
15000
10000
10000
15000
10000
10000
7500
5000
10000
7500
5000
10000
7500
5000
10000
7500
5000
10000
10000
10000
4
* Consult factory
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RXE Devices
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RXE
Radial Leaded
Part numbering system
RXE
suffix
Blank
-2
- AP
-1
K
S
= Bulk packaged
= Tape and reel
= AMMO pack
= 25.4-mm (1.0 inch) minimum lead length
= Kinked leads
= Straight leads
Current rating
Part marking system
V
V
V 60
X185
NK8C
V
X
4
Example
60
Part
description
Voltage rating
RXE010
RXE017
Raychem symbol
RXE020
RXE025
RXE030
Part ID
RXE040
RXE050
RXE065
Product family (RXE)
RXE075
RXE090
Lot number/Date code RXE110
(may be on the back) RXE135
RXE160
RXE185
RXE250
RXE300
RXE375
Part
ID
010
017
020
025
030
040
050
065
075
090
110
135
160
185
250
300
375
WARNING:
• Operation beyond maximum ratings or improper use may result in
device damage and possible electrical arcing and flame.
• These devices are intended for protection against occasional overcurrent or overtemperature fault conditions, and should not be used
when repeated fault conditions are anticipated.
176
RXE Devices
Raychem Circuit Protection Devices