POLYFUSE
®
Resettable PTCs
Surface Mount
2920L Series
Description
The 2920L series device provides surface mount
overcurrent protection for medium voltage (≤60V)
applications where resettable protection is desired.
Features
• RoHS compliant and
lead-free
• Fast response to fault
currents
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E183209
R50082521
• High voltage
• Low-profile
Applications
• IEE1394 port protection
• Powered ethernet port
protection (IEEE 802.3 af)
• Automotive electronic
control module protection
• Low voltage telecom
equipment protection
Electrical Characteristics
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
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
Agency
Approvals
Part Number
Marking
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.
2920L Series
Specifications are subject to change without notice.
Electronics Designers Guide
www.littelfuse.com
©2006 Littelfuse
POLYFUSE
®
Resettable PTCs
Surface Mount
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
2920L Series
-20°C
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°C
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
23°C
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
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
50°C
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
60°C
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
70°C
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
85°C
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
Average Time Current Curves
1.00A
1.25A
1.50A
1.85A
2.00A/24V
2.00A
2.50A
2.60A
3.00A/15V
3.00A
0.300A
0.100A
0.500A
0.750A
Temperature Rerating Curve
100000
10000
1000
TIME IN SECONDS
100
10
1
0.100
0.010
0.001
0.02
0.100
1
10
100
CURRENT IN AMPERES
by a number or variables,
two decimal places.
Note: 1.00 means the number one with
and these curves
The average time current curves and
are subject to change without notice.
Specifications
temperature rerating curve performance is affected
provided as guidance only. Customer must
06.05.10
AKL V3.9
verify the performance in their application.
2920L Series
Specifications are subject to change without notice.
2
Electronics Designers Guide
www.littelfuse.com
©2006 Littelfuse
POLYFUSE
®
Resettable PTCs
Surface Mount
Soldering Parameters
Condition
Peak Temp/ Duration Time
Time above liquids (TAL) 220°C
Preheat 120°C~ 180°C
Storage Condition
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
=
• Recommended reflow methods: IR, vapor phase oven, hot air
oven, N
2
environment for lead-free
• Devices are not designed to be wave soldered to the bottom side
of the board.
• Recommended maximum paste thickness is 0.25mm (0.010 inch)
• Devices can be cleaned using standard industry methods and
solvents.
Note:
If reflow temperatures exceed the recommended profile,
devices may not meet the performance requirements.
180
120
Preheating
0
50 to 150
60 to 100
Time(s)
120
Physical Specifications
Terminal Material
Lead Solderability
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
-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-202 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
Thermal Shock
Solvent Resistance
Vibration
2920L Series
Specifications are subject to change without notice.
Electronics Designers Guide
www.littelfuse.com
©2006 Littelfuse
POLYFUSE
®
Resettable PTCs
Surface Mount
Dimensions (mm)
MARKING CODE VARIES
WITH AMPERAGE AND VOLTAGE RATING
(SEE CHART)
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
E
4.60 mm
(.181”)
5.30 mm
(.209”)
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.
Part Numbering 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
SIZE
2920L Series
Specifications are subject to change without notice.
Electronics Designers Guide
www.littelfuse.com
©2006 Littelfuse
POLYFUSE
®
Resettable PTCs
Surface Mount
Packaging
I
hold
(A)
0.30
0.50
0.75
1.10
1.25
1.50
1.85
2.00
2.50
2.60
3.00
I
hold
Code
030
050
075
100
125
150
185
200
250
260
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
1500
1500
1500
2000
2000
1500
1500
1500
1500
1500
2000
1500
1500
Quantity &
Packaging Codes
DR
DR
DR
PR
PR
DR
DR
DR
DR
DR
PR
DR
DR
2920L Series
Specifications are subject to change without notice.
Electronics Designers Guide
www.littelfuse.com
©2006 Littelfuse
测试/测量
