POLYMER PTC
RESETTABLE FUSE
Product: Resettable Fuse
Revision: D
Date: 2022-8-1
Page No.: 1 OF 1
电路保护元器件专业制造商
Web: http://www.tlcet.com.cn
Part Number:TRM055
1、Physical Dimensions
Part
Number
TRM055
A
B
C
D
E
Lead
Max
Max
TYP
Min
Max
Φ
19.8
24.9
5.1
7.6
4.5
0.80
M055
XX
IT
(A)
TRM055
0.55
1.25
M 055
Holding Current
Max.Interrupt voltage
XX
Lot No.
C
Vmax
IH
(A)
Logo
B
D
2、Electrical Characteristics
Part
Number
E
A
Unit:mm
OP
Vdc
240
I max
(A)
7.0
Ttrip
(Max time to trip)
Vmax
Interrupt
Vrms
265
Current(A)
2.75
Time(S)
26.0
IH: Holding Current: maximum current at which the device will not trip in 25℃ still air.
IT: Tripping Current minimum current at which the device will trip in 25℃ still air.
Vmax: 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℃.
R max: Maximum resistance of device prior to trip at 25℃.
R1 max: Maximum resistance of device is measured one hours post reflow at 25℃.
Pd typ
(W)
R min
(Ω)
R max
(Ω)
R1max
(Ω)
3.4
0.45
0.84
1.45
3、Thermal Derating
Part Number
TRM055
Ambient Operating Temperature
-40℃
-20℃
0℃
25℃
40℃
50℃
60℃
70℃
85℃
0.87
0.76
0.65
0.55
0.44
0.39
0.33
0.28
0.21
4、Wave Soldering Parameters
Profile Feature
Condition
Average Ramp-Up Rate (Tsmax to TP)
4ºC/second max.
Preheat
-Temperature Min (Tsmin)
-Temperature Max (Tsmax)
-Time (Tsmin to Tsmax)
100ºC
125ºC
60-180 seconds
Peak Temperature (TP)
265ºC
Max Time at Peak Temperature (tP)
5 seconds
Ramp-Down Rate
6 ºC /second max.
Time 25ºC to Peak Temperature
5 minutes max.
Storage Condition
0ºC ~35ºC, ≦70%RH, 2 Years
5、Package Information
Packing quantity:500pcs/bag
6、Agency Recognition:TUV
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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