POLYFUSE
®
Resettable PTCs
Surface Mount > 2920L Series
2920L Series
Description
The 2920L Series device provides
surface mount overcurrent protection
for medium voltage (≤60V) applications
where resettable protection is desired.
Features
lead-free
currents
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E183209
R50119118
Applications
equipment protection
protection (IEEE 802.3 af)
control module protection
Electrical Characteristics
P
d
max.
(W)
1.50
1.50
1.50
1.50
1.50
1.50
1.50
1.50
1.50
1.50
1.50
1.50
1.50
Maximum Time
To Trip
Current
(A)
1.50
2.50
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
Time
(Sec.)
3.00
4.00
0.30
0.50
2.00
2.00
2.50
5.00
5.00
10.00
10.00
20.00
20.00
R
min
(Ω)
1.200
0.350
0.350
0.120
0.070
0.080
0.065
0.050
0.050
0.035
0.025
0.015
0.015
Resistance
R
typ
(Ω)
3.000
0.870
0.670
0.270
0.160
0.150
0.110
0.090
0.090
0.060
0.050
0.033
0.033
R
1max
(Ω)
4.800
1.400
1.000
0.410
0.250
0.230
0.150
0.125
0.125
0.085
0.075
0.048
0.048
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Part Number
Marking
I
hold
(A)
0.30
0.50
0.75
1.10
1.25
1.50
1.85
2.00
2.00
2.50
2.60
3.00
3.00
I
trip
(A)
0.60
1.00
1.50
2.20
2.50
3.00
3.70
4.00
4.00
5.00
5.00
5.00
5.00
V
max
(Vdc)
60
60
30
33
15
33
33
15
24
15
6
6
15
I
max
(A)
10
10
40
40
40
40
40
40
40
40
40
40
40
Agency
Approvals
2920L030
2920L050
2920L075
2920L100
2920L125
2920L150
2920L185
2920L200
2920L200/24
2920L250
2920L260
2920L300
2920L300/15
LF030
LF050
LF075
LF100
LF125
LF150
LF185
LF200
LF200-24
LF250
LF260
LF300
LF300-15
I
hold
= Hold current: maximum current device will pass without tripping in 20°C still air.
I
trip
= Trip current: minimum current at which the device will trip in 20°C still air.
V
max
= Maximum voltage device can withstand without damage at rated current (I max)
I
max
= Maximum fault current device can withstand without damage at rated voltage (V
max
)
P
d
= Power dissipated from device when in the tripped state at 20°C still air.
R
min
= Minimum resistance of device in initial (un-soldered) state.
R
typ
= Typical resistance of device in initial (un-soldered) state.
R
1max
= Maximum resistance of device at 20°C measured one hour after tripping or reflow
soldering of 260°C for 20 sec.
Caution:
Operation beyond the specified rating may result in damage and possible arcing
and flame.
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/2920L.html for current information.
Revised: October 24, 2008
2920L Series
2920L Series
POLYFUSE
®
Resettable PTCs
Surface Mount > 2920L Series
Temperature Rerating
Ambient Operation Temperature
-40°C
Part Number
2920L030
2920L050
2920L075
2920L100
2920L125
2920L150
2920L185
2920L200
2920L200/24
2920L250
2920L260
2920L300
2920L300/15
0.45
0.76
1.13
1.66
1.89
2.27
2.80
3.02
3.14
3.78
3.64
4.53
4.20
0.40
0.67
1.01
1.47
1.68
2.01
2.47
2.68
2.77
3.35
3.25
4.02
3.85
0.35
0.59
0.88
1.29
1.46
1.76
2.17
2.34
2.42
2.93
2.91
3.51
3.44
0.30
0.50
0.75
1.10
1.25
1.50
1.85
2.00
2.00
2.50
2.60
3.00
3.00
-20°C
0°C
23°C
40°C
Hold Current (A)
0.25
0.42
0.62
0.91
1.04
1.25
1.54
1.66
1.73
2.08
2.26
2.52
2.69
0.23
0.38
0.56
0.83
0.94
1.13
1.39
1.50
1.56
1.88
2.08
2.26
2.50
0.20
0.33
0.50
0.73
0.83
1.00
1.22
1.32
1.38
1.65
1.95
1.99
2.31
0.17
0.29
0.44
0.64
0.73
0.87
1.07
1.16
1.20
1.45
1.74
1.75
2.12
0.14
0.23
0.34
0.50
0.56
0.74
0.85
0.90
0.98
1.13
1.48
1.34
1.83
50°C
60°C
70°C
85°C
Average Time Current Curves
0.10A
0.30A
0.50A
0.75A
1.00A
1.25A
1.50A
1.85A
2.00A/24V
2.00A
2.50A
2.60A
3.00A/15V
3.00A
Temperature Rerating Curve
170%
150%
Percentage of Rated Current
100000
2920L
130%
110%
90%
70%
50%
30%
10%
10000
1000
Time in Seconds
100
-40
-30 -20
-10
0
10
20 30
40
Temperature (°C)
50
60
70
80 85
10
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.
2920L Series
Revised: October 24, 2008
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/2920L.html for current information.
POLYFUSE
®
Resettable PTCs
Surface Mount > 2920L Series
Soldering Parameters
Condition
Peak Temp/ Duration Time
Time above liquids (TAL) 220°C
Preheat 120°C~ 180°C
Storage Condition
oven, N
2
environment for lead–free
Reflow
260°C / 10 Sec
60 Sec ~ 100 Sec
Temperature (°C)
260
220
Soldering
Cooling
50 Sec ~ 150 Sec
0°C~35°C, < 70%RH
=
Preheating
180
120
Note:
If reflow temperatures exceed the recommended profile,
devices may not meet the performance requirements.
0
50 to 150
60 to 100
Time(s)
120
Physical Specifications
Solder-Plated Copper (Solder Material:
Matte Tin(Sn))
Meets EIA Specification RS186-9E, ANSI/
J-STD-002 Category 3.
Environmental Specifications
Operating/Storage
Temperature
Maximum Device Surface
Temperature in Tripped
State
Passive Aging
Humidity Aging
Terminal Material
Lead Solderability
-40°C to +85°C
125°C
+85°C, 1000 hours
-/+5% typical resistance change
+85°C, 85%,R.H.,1000 hours
-/+5% typical resistance change
MIL
-STD-20 2, Method 107G
+85°C/-40°C 20 times
-30% typical resistance change
MIL–STD–202, Method 215
MIL–STD–883C, Method 2007
.1,
Condition A
Level 2, J–STD–020C
Thermal Shock
Solvent Resistance
Vibration
Moisture Sensitivity Level
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/2920L.html for current information.
Revised: October 24, 2008
2920L Series
2920L Series
solvents.
POLYFUSE
®
Resettable PTCs
Surface Mount > 2920L Series
Dimensions (mm)
MARKING CODE VARIES
WITH AMPERAGE AND VOLTAGE RATING
(SEE ELECTRICAL CHARACTERISTIC TABLE)
SHOWN ARE:
- 1.5A/33V RATING (LEFT)
- 2.0A/24V RATING (RIGHT)
A
C
Top
View
150
150
D
B
200
-24
Side
View
Bottom
View
Pad
Layout
4.60 mm
(.181”)
5.30 mm
(.209”)
E
2.0mm
(.079”)
A
Part Number
2920L030
2920L050
2920L075
2920L100
2920L125
2920L150
2920L185
2920L200
2920L200/24
2920L250
2920L260
2920L300
2920L300/15
Inches
0.26
0.26
0.26
0.26
0.26
0.26
0.26
0.26
0.26
0.26
0.26
0.26
0.26
0.31
0.31
0.31
0.31
0.31
0.31
0.31
0.31
0.31
0.31
0.31
0.31
0.31
mm
6.73
6.73
6.73
6.73
6.73
6.73
6.73
6.73
6.73
6.73
6.73
6.73
6.73
7
.98
7
.98
7
.98
7
.98
7
.98
7
.98
7
.98
7
.98
7
.98
7
.98
7
.98
7
.98
7
.98
Inches
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.21
0.21
0.21
0.21
0.21
0.21
0.21
0.21
0.21
0.21
0.21
0.21
0.21
B
mm
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
5.44
5.44
5.44
5.44
5.44
5.44
5.44
5.44
5.44
5.44
5.44
5.44
5.44
Inches
0.03
0.03
0.03
0.02
0.02
0.03
0.03
0.03
0.03
0.03
0.02
0.03
0.03
0.05
0.05
0.05
0.04
0.04
0.05
0.05
0.05
0.05
0.05
0.04
0.05
0.05
C
mm
0.75
0.75
0.75
0.55
0.55
0.75
0.75
0.75
0.75
0.75
0.55
0.75
0.75
1.25
1.25
1.25
1
1
1.25
1.25
1.25
1.25
1.25
1
1.25
1.25
Min.
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
D
Inches mm
Min.
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
Inches
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.08
0.08
0.08
0.08
0.08
0.08
0.08
0.08
0.08
0.08
0.08
0.08
0.08
E
mm
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
2
2
2
2
2
2
2
2
2
2
2
2
2
Min Max. Min. Max.
Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max.
2920L Series
Revised: October 24, 2008
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/2920L.html for current information.
POLYFUSE
®
Resettable PTCs
Surface Mount > 2920L Series
Part Ordering Number System
2920 L 200 /24 D R
PACKAGING STYLE
R:
Tape
& Reel
SERIES
QUANTITY CODE:
D=1500 P=2000
/XX: SPECIAL VOLTAGE RATING
(NOT APPLICABLE TO ALL PARTS)
I
HOLD
CURRENT CODE (SEE TABLE BELOW)
L: LITTELFUSE SURFACE MOUNT PPTC
Packaging
Ordering
Number
2920L030DR
2920L050DR
2920L075DR
2920L100PR
2920L125PR
2920L150DR
2920L185DR
2920L200DR
2920L200/24DR
2920L250DR
2920L260PR
2920L300DR
2920L300/15DR
I
hold
(A)
0.30
0.50
0.75
1.10
1.25
1.50
1.85
2.00
2.00
2.50
2.60
3.00
3.00
I
hold
Code
030
050
075
100
125
150
185
200
200
250
260
300
300
/15
/24
Voltage
Option
Packaging
Option
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Quantity &
Packaging Codes
DR
DR
DR
PR
PR
DR
DR
DR
DR
DR
PR
DR
DR
Part Number
2920L030
2920L050
2920L075
2920L100
2920L125
2920L150
2920L185
2920L200
2920L200/24
2920L250
2920L260
2920L300
2920L300/15
Quantity
1500
1500
1500
2000
2000
1500
1500
1500
1500
1500
2000
1500
1500
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/2920L.html for current information.
Revised: October 24, 2008
2920L Series
2920L Series
SIZE
嵌入式系统
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