LITTELFUSE 250R080U

POLYFUSE® Resettable PTCs
Radial Leaded > 250R Series
250R Series
Description
The 250R Series is designed to protect against short
duration high voltage fault currents (power cross or power
induction surge) typically found in telecom applications
(250Vrms). The series can be used to help telecom
networking equipment meet the protection requirements
specified in ITU K.20 and K.21.
Features
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range, 60VDC operating
voltage
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Agency Approvals
AGENCY FILE NUMBER
Applications
E183209
t-"/8"/FRVJQNFOU
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t$VTUPNFS1SFNJTFT
Equipment (CPE)
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telecom centers
R50120008
Electrical Characteristics
Vint / Vop
I max
(A)
Pd
typ.
(W)
250/60
3
0.16
250/60
0.24
250/60
I hold
(A)
I trip
(A)
250R080
0.08
0.16
250R080T
0.08
250R120
0.12
Part Number
Vmax
Maximum Time
To Trip
Agency
Approvals
Resistance
Current
(A)
Time
(Sec.)
R min
(Ω)
R typ
(Ω)
R 1max
(Ω)
1
0.35
3
14
22
33
X
X
3
1
0.35
3
15
22
33
X
X
3
1
1
1.5
4
8
16
X
X
250R120-RA
0.12
0.24
250/60
3
1
1
1.0
7
9
16
X
X
250R120-RC
0.12
0.24
250/60
3
1
1
0.85
5.4
7.5
14
X
X
250R120-RF
0.12
0.24
250/60
3
1
1
0.7
6
10.5
16
X
X
250R120-R1
0.12
0.24
250/60
3
1
1
0.8
6
9
16
X
X
250R120-R2
0.12
0.24
250/60
3
1
1
0.7
8
10.5
16
X
X
250R120-R3
0.12
0.24
250/60
3
1
1
1
8
10
16
X
X
250R120T
0.12
0.24
250/60
3
1
1
1.2
7
12
16
X
X
250R145
0.145
0.29
250/60
3
1
1
2.5
3
6
14
X
X
250R145-RA
0.145
0.29
250/60
3
1
1
5
3
5.5
12
X
X
250R145-RB
0.145
0.29
250/60
3
1
1
2.5
4.5
6
14
X
X
250R145T
0.145
0.29
250/60
3
1
1
2.0
5.4
7.5
14
X
X
250R180
0.18
0.65
250/60
10
1.8
1
21
0.8
2.2
4
X
X
250R180T
0.18
0.65
250/60
10
1.8
1
20
1.4
3.9
4.5
X
X
Items with T at end of part number = pre-tripped device. See Part Ordering Number System section of this data sheet for additional information.
I hold = Hold current: maximum current device will pass without tripping in 23°C still air.
R min = Minimum resistance of device in initial (un-soldered) state.
I trip = Trip current: minimum current at which the device will trip in 23°C still air.
R typ = Typical resistance of device in initial (un-soldered) state.
Vint = Maximum voltage the device can withstand without damage at rated current (I max)
R 1max = Maximum resistance of device at 20°C measured one hour after tripping.
Vop= The device regular operation voltage
Caution: Operation beyond the specified rating may result in damage and possible arcing
and flame.
I max = Maximum fault current device can withstand without damage at rated voltage (Vmax)
P d = Power dissipated from device when in the tripped state at 23°C still air.
* Effective January 1, 2010, all 250R PTC products will be manufactured Halogen Free (HF). Existing Non-Halogen Free 250R PTC products may continue to be sold, until supplies are depleted.
99
© 2010 Littelfuse, Inc
250R Series
Specifications are subject to change without notice.
Revised: July 12, 2010
Please refer to www.littelfuse.com/series/250R.html for current information.
250R Series
AGENCY
t#JOOFEBOETPSUFEOBSSPX
resistance ranges available
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Free and Halogen-Free*
POLYFUSE® Resettable PTCs
Radial Leaded > 250R Series
Temperature Rerating
Ambient Operation Temperature
-40°C
-20°C
0°C
23°C
Part Number
40°C
50°C
60°C
70°C
85°C
Hold Current (A)
250R080
0.12
0.11
0.09
0.08
0.06
0.05
0.05
0.04
0.03
250R080T
0.12
0.11
0.09
0.08
0.06
0.05
0.05
0.04
0.03
250R120
0.18
0.16
0.14
0.12
0.10
0.09
0.08
0.06
0.05
250R120T
0.18
0.16
0.14
0.12
0.10
0.09
0.08
0.06
0.05
250R145
0.26
0.20
0.17
0.145
0.12
0.11
0.09
0.08
0.06
250R145T
0.26
0.20
0.17
0.145
0.12
0.11
0.09
0.08
0.06
250R180
0.28
0.23
0.21
0.18
0.16
0.13
0.10
0.11
0.083
250R180T
0.28
0.23
0.21
0.18
0.16
0.13
0.10
0.11
0.083
Average Time Current Curves
Temperature Rerating Curve
0.080A
0.120A
0.145A
0.180A
170%
150%
Percentage of Rated Current
250R
100000
10000
Time in Seconds
1000
130%
110%
90%
70%
50%
30%
100
10%
-40 -30 -20
10
-10
0
10
20 30 40
Temperature (°C)
50
60
70
80
1
0.1
0.01
0.1
1
10
100
Current in Amperes
The average time current curves and Temperature Rerating curve performance is affected
by a number or variables, and these curves provided as guidance only. Customer must
verify the performance in their application.
100
250R Series
Revised: July 12, 2010
© 2010 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/250R.html for current information.
POLYFUSE® Resettable PTCs
Radial Leaded > 250R Series
Agency Specification Selection Guide For Telecom and Networking Applications
Product
Lightning
Power Cross
250R120
250R145
ITU K.20/21/45 – 1.5kV 10/700μs
ITU K.20/21/45 – 4kV 10/700μs*
ITU K.20/21/45 – 1.5kV 10/700μs
ITU K.20/21/45 – 4kV 10/700μs*
Telcordia GR – 974 – 1.0kV 10/1000μs
ITU K.20/21/45 – 230Vac, 10Ω
ITU K.20/21/45 – 600Vac, 600Ω
ITU K.20/21/45 – 230Vac, 10Ω
ITU K.20/21/45 – 600Vac, 600Ω
Telcordia GR – 974- 283Vac, 10A
250R180
*Devices should be independently evaluated and tested for use in any specific application
Protection Application Guide
Application
South America/Asia/Europe
ITU K.45
*Access network equipment
Remote terminal
Repeaters
WAN equipment
Cross –connect
South America/Asia/Europe
ITU K.21
Customer and IT equipment
Analog modems
ADSL, xDSL
Phone sets, PBX systems
Internet appliances
POS terminals
South America/Asia/Europe
ITU K.20
Central Office
POTS/ISDN linecards
T1/E1/J1 linecards
ADSL/VDSL splitters
CSU/DSU
North America Telcordia
GR-974
South America/Asia/Europe
ITU K.20
North America Telcordia
GR-1089
South America/Asia/Europe
ITU K.20 and K.21
Device Selection
250R180
250R180T
250R145
250R145T
250R120
250R120T
250R180
250R180T
250R145
250R145T
250R120
250R120T
250R180
250R180T
250R145
250R145T
250R120
250R120T
250R180
250R180T
250R145
250R145T
250R120
250R120T
*Primary protection modules
MDF modules
Network interface
*Intrabuilding communication systems
LAN, VOIP cards
Local loop handsets
250R180
250R180T
250R145
250R145T
250R120
250R120T
LAN Intrabuilding power cross
Protection
LAN equipment, IP phone
250R080
250R Series
Region/Specification
*Resistance binned parts are recommended
© 2010 Littelfuse, Inc
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/250R.html for current information.
101
250R Series
Revised: July 12, 2010
POLYFUSE® Resettable PTCs
Radial Leaded > 250R Series
Soldering Parameters - Wave Soldering
Condition
Wave Soldering
Peak Temp/ Duration Time
> 220°C
260°C 5 Sec
Preheat 140°C ~ 180°C
180 Sec ~ 210 Sec
0°C~35°C 70%RH
Soldering
260
Cooling
220
Temperature (°C)
Storage Condition
2 Sec ~ 20 Sec
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N2 environment for lead-free.
Preheating
190
160
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side of the board.
t%FWJDFTDBOCFDMFBOFEVTJOHTUBOEBSEJOEVTUSZNFUIPET
and solvents.
0
180 to 210
2 to 5
20-30
Time(s)
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Note: If soldering temperatures exceed the recommended
profile, devices may not meet the performance
requirements.
Soldering Parameters - Solder Reflow
Condition
Reflow
Peak Temp/ Duration Time
> 220°C
260°C > 5 Sec
Storage Condition
Cooling
220
60 Sec ~ 90 Sec
0°C~35°C, 70%RH
Temperature (°C)
Preheat 160°C ~ 190°C
Soldering
260
30 Sec ~ 60 Sec
t3FDPNNFOEFESFnPXNFUIPET*3WBQPSQIBTFPWFOIPU
air oven, N2 environment for lead-free.
Preheating
190
160
t%FWJDFTBSFOPUEFTJHOFEUPCFXBWFTPMEFSFEUPUIF
bottom side of the board.
t%FWJDFTDBOCFDMFBOFEVTJOHTUBOEBSEJOEVTUSZNFUIPET
and solvents.
0
60 to 90
30 to 60
120
Time(s)
Note: If reflow temperatures exceed the recommended
profile, devices may not meet the performance
requirements.
Environmental Specifications
Physical Specifications
Operating/Storage
Temperature
-40°C to +85°C
Maximum Device Surface
Temperature in Tripped State
125°C
Lead Material
Tin-plated Copper
Soldering
Characteristics
Solderability per MIL–STD–202,
Method 208E
Passive Aging
65°C/85°C, 1000 hours
Insulating Material
Cured, flame retardant epoxy polymer
meets UL94V-0 requirements.
Humidity Aging
+85°C, 85% R.H,.1000 hours
Device Labeling
Marked with 'LF', voltage, current rating,
and date code.
Thermal Shock
MIL–STD–202F, Method 107G
+125°C to -55°C 10 times
Solvent Resistance
MIL–STD–202, Method 215F
Moisture Sesitivity Level
Level 1, J–STD–020C
102
250R Series
Revised: July 12, 2010
© 2010 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/250R.html for current information.
POLYFUSE® Resettable PTCs
Radial Leaded > 250R Series
Dimensions
A
Part Marking System
C
A
C
B
Littelfuse
Voltage Rating
Trademark
Current Rating
Date Code
(Contact Littelfuse
for additional
information)
250
Littelfuse
Trademark
080
XXXX
B
250
Voltage Rating
Current Rating
Date Code
(Contact Littelfuse
for additional
information)
120
XXXX
D
D
F
E
F
E
Figure 2
A
Part Number
Figure
B
C
D
E
Physical Characteristics
Inches
mm
Inches
mm
Inches
mm
Inches
mm
Inches
mm
Lead (dia)
Max.
Max.
Max.
Max.
Max.
Max.
Min.
Min.
Typ.
Typ.
Inches
mm
Material
250R080
1
0.23
5.8
0.39
9.9
0.18
4.6
0.19
4.7
0.20
5.1
0.026
0.65
Sn/Cu
250R080T
1
0.23
5.8
0.39
9.9
0.18
4.6
0.19
4.7
0.20
5.1
0.026
0.65
Sn/Cu
250R120
2
0.26
6.5
0.43
11
0.15
3.8
0.19
4.7
0.20
5.1
0.026
0.65
Sn/Cu
250R120-RA
2
0.26
6.5
0.43
11
0.18
4.6
0.19
4.7
0.20
5.1
0.026
0.65
Sn/Cu
250R120-RC
2
0.26
6.5
0.43
11
0.18
4.6
0.19
4.7
0.20
5.1
0.026
0.65
Sn/Cu
250R120-RF
2
0.26
6.5
0.43
11
0.18
4.6
0.19
4.7
0.20
5.1
0.026
0.65
Sn/Cu
250R120-R1
2
0.26
6.5
0.43
11
0.18
4.6
0.19
4.7
0.20
5.1
0.026
0.65
Sn/Cu
250R120-R2
2
0.26
6.5
0.43
11
0.18
4.6
0.19
4.7
0.20
5.1
0.026
0.65
Sn/Cu
250R120-R3
2
0.26
6.5
0.43
11
0.18
4.6
0.19
4.7
0.20
5.1
0.026
0.65
Sn/Cu
250R120T
2
0.26
6.5
0.43
11
0.18
4.6
0.19
4.7
0.20
5.1
0.026
0.65
Sn/Cu
250R145
2
0.26
6.5
0.43
11
0.18
4.6
0.19
4.7
0.20
5.1
0.026
0.65
Sn/Cu
250R145-RA
2
0.26
6.5
0.43
11
0.18
4.6
0.19
4.7
0.20
5.1
0.026
0.65
Sn/Cu
250R145-RB
2
0.26
6.5
0.43
11
0.18
4.6
0.19
4.7
0.20
5.1
0.026
0.65
Sn/Cu
250R145T
2
0.26
6.5
0.43
11
0.18
4.6
0.19
4.7
0.20
5.1
0.026
0.65
Sn/Cu
250R180
1
0.37
9.5
0.47
12
0.18
4.6
0.19
4.7
0.20
5.1
0.026
0.65
Sn/Cu
250R180T
1
0.37
9.5
0.47
12
0.18
4.6
0.19
4.7
0.20
5.1
0.026
0.65
Sn/Cu
© 2010 Littelfuse, Inc
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/250R.html for current information.
103
250R Series
Revised: July 12, 2010
250R Series
Figure 1
POLYFUSE® Resettable PTCs
Radial Leaded > 250R Series
Part Ordering Number System
250 R 120
- RA Z R
PACKAGING STYLE
BLANK: Bulk
R: Tape & Ammo
QUANTITY CODE: F=200 M=1000 U=500 Z=1200
SERIES
Rx: Resistance Range (x = A-Z or 1-9) [not applicable for all parts]
T: PRE-TRIPPED DEVICE (OPTIONAL)
I HOLD CURRENT CODE (SEE TABLE BELOW)
R: RADIAL
PEAK VOLTAGE RATING
Packaging
Part Number
250R080
250R080T
250R120
250R120-RA
250R120-RC
250R120-RF
250R120-R1
250R120-R2
250R120-R3
250R120T
250R145
250R145-RA
250R145-RB
250R145T
250R180
250R180T
Ordering
Number
250R080U
250R080ZR
250R080TU
250R080TZR
250R120U
250R120ZR
250R120-RAU
250R120-RAZR
250R120-RCU
250R120-RCZR
250R120-RFU
250R120-RFZR
250R120-R1U
250R120-R1ZR
250R120-R2U
250R120-R2ZR
250R120-R3U
250R120-R3ZR
250R120TU
250R120TZR
250R145U
250R145ZR
250R145-RAU
250R145-RAZR
250R145-RBU
250R145-RBZR
250R145TU
250R145TZR
250R180F
250R180MR
250R180TF
250R180TMR
I hold
(A)
I hold
Code
0.080
080
0.080
080
0.120
120
0.120
120
0.120
120
0.120
120
0.120
120
0.120
120
0.120
120
0.120
120
0.145
145
0.145
145
0.145
145
0.145
145
0.180
180
0.180
180
Packaging
Option
Quantity
Quantity &
Packaging Codes
Bulk
500
U
Tape and Ammo
1200
ZR
Bulk
500
U
Tape and Ammo
1200
ZR
Bulk
500
U
Tape and Ammo
1200
ZR
Bulk
500
U
Tape and Ammo
1200
ZR
Bulk
500
U
Tape and Ammo
1200
ZR
Bulk
500
U
Tape and Ammo
1200
ZR
Bulk
500
U
Tape and Ammo
1200
ZR
Bulk
500
U
Tape and Ammo
1200
ZR
Bulk
500
U
Tape and Ammo
1200
ZR
Bulk
500
U
Tape and Ammo
1200
ZR
Bulk
500
U
Tape and Ammo
1200
ZR
Bulk
500
U
Tape and Ammo
1200
ZR
Bulk
500
U
Tape and Ammo
1200
ZR
Bulk
500
U
Tape and Ammo
Bulk
1200
200
ZR
F
Tape and Ammo
1000
MR
Bulk
200
F
Tape and Ammo
1000
MR
104
250R Series
Revised: July 12, 2010
© 2010 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/250R.html for current information.
POLYFUSE® Resettable PTCs
Radial Leaded > 250R Series
Tape and Ammo Specifications
Devices taped using EIA468-B/IE286-2 standards. See table below and Figure 1 for details.
Dimensions
Dimension
EIA Mark
IEC Mark
Carrier tape width
W
Dim. (mm)
Tol. (mm)
W
18
–0.5 / +1.0
W4
W0
11
min.
W6
W2
3
max.
Sprocket hole position
W5
W1
9
–0.5 / +0.75
Sprocket hole diameter*
D0
D0
4
–0.32 / +0.2
Abscissa to plane (straight lead)
H
H
18.5
–/+ 3.0
Abscissa to plane (kinked lead)
H0
H0
16
–/+ 0.5
Abscissa to top
H1
H1
32.2
max.
Overall width without lead protrusion
C1
42.5
max.
Overall width with lead protrusion
C2
43.2
max.
Lead protrusion
L1
l1
1.0
max.
Protrusion of cut out
L
L
11
max.
Protrusion beyond hold–down tape
l2
l2
Not specified
Sprocket hole pitch: 250R080–250R145
P0
P0
12.7
–/+ 0.3
Sprocket hole pitch: 250R180
P0
P0
25.4
–/+ 0.5
20
consecutive.
–/+ 1
Pitch tolerance
Device pitch: 250R080–250R145
12.7
Device pitch: 250R180
25.4
Tape thickness
t
Tape thickness with splice
t1
t
Splice sprocket hole alignment
0.9
max.
2.0
max.
0
–/+ 0.3
Body lateral deviation
Δh
Δh
0
–/+ 1.0
Body tape plane deviation
Δp
Δp
0
–/+ 1.3
P1
P1
3.81
–/+ 0.7
F
F
5.1
–/+ 0.7
Ordinate to adjacent component lead*
Lead spacing
250R Series
Hold down tape width
Top distance between tape edges
*Differs from EIA Specification
Tape and Ammo Diagram
Δh
Δh
Δh
Figure 1
Δp
Reference plane
A1
H1
F
A
L
B
H0
W4 W5
W
H1 C1
H C2
I2
L1
P0
D0
Direction of unreeling
Cross section A - B
t
© 2010 Littelfuse, Inc
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/250R.html for current information.
105
250R Series
Revised: July 12, 2010