POLYMER PTC
RESETTABLE FUSE
Part Number:TLC-USMD020/24
1、Physical Dimensions(size of 1210)
Part Number
TLC-USMD020/24
电路保护元器件专业制造商
Web:
http://www.tlcet.com.cn
Product: Resettable Fuse
Revision: G
Date: 2015-07-22
Page No.: 1 OF 1
Unit:mm
B
C
Max
2.80
Top and Bottom View
A
Side View
C
A
Min
3.00
D
Max
1.20
Max
3.43
Min
2.35
Min
0.80
Min
0.30
Marking
T02
Marking
B
2、Electrical Characteristics
Part Number
I
H
(A)
I
T
(A)
V
max
(V)
I
max
(A)
T
trip
Current(A)
(Max time to trip)
D
Time(S)
Pd
typ
（W）
0.60
R
min
(Ω)
0.40
R1
max
(Ω)
5.00
TLC-USMD020/24
0.20
0.40
24
10
8.00
0.02
I
H
: Holding Current: maximum current at which the device will not trip in 25℃ still air.
I
T
: Tripping Current minimum current at which the device will trip in 25℃ still air.
V
max
: Maximum voltage device can withstand without damage at rated current.
I
max
: Maximum fault current device can withstand without damage at rated voltage.
T
trip
: Maximum time to trip(s) at assigned current.
Pd
typ
: Rated working power.
R
min
: Minimum resistance of device prior to trip at 25℃.
R1
max
: Maximum resistance of device is measured one hours post reflow at 25℃.
Noted: All electrical function test is conducted after PCB mounted.
3、Thermal Derating
TLC-USMD020/24
Maximum ambient operating temperature
-40℃
-20℃
0℃
25℃
40℃
50℃
60℃
70℃
85℃
Hold Current(A)
Trip Current(A)
0.32
0.64
0.28
0.56
0.24
0.48
0.20
0.40
0.18
0.36
0.16
0.32
0.14
0.28
0.12
0.24
0.10
0.20
4、Solder Reflow Recommendations
260℃
Ramp-up
20-40s
Critlcal Zone
Recommended Pad Layout(mm)
1.0±0.05
1.0±0.05
217℃
Temperature
60-150s
200℃
Preheat
Ramp-down
1.5±0.1
1.2±0.1
150℃
60-180s
25℃
8 minutes max
Average Ramp-Up Rate:3
℃
/second max
Time
Ramp-Down Rate:6
℃
/second max
Notes:If reflow temperatures exceed the recommended
profile,devices may not meet the performance requirements.
5、Package Information
Packing quantity:3500PCS/Reel
Note:Reel packaging per EIA-481-1 standard
6、Agency Recognition：
Caution:Operation beyond the rated voltage or current may result in rupture electrical arcing or flame.Specifications are
subject to change without notice.
TEL: 86-0769-3892 0554
FAX: 86-0769-8793 2077
E-mail:sales@tlcet.com.cn
Address:No.18,5th GaoLi Road,TangXia Town,DongGuan,GuangDong,P.R China 523710
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