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參數(shù)資料
| 型號(hào)： | 250R145 |
| 廠商： | Littelfuse, Inc. |
| 英文描述： | POLYFUSE Resettable PTCs Radial Leaded |
| 中文描述： | POLYFUSE復(fù)式膽道鏡引線 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大?。?/td> | 353K |
| 代理商： | 250R145 |
www.littelfuse.com
2006 Littelfuse
250R Series
Specifications are subject to change without notice.
Electronics Designers Guide
POLYFUSE
Resettable PTCs
Radial Leaded
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.
Electrical Characteristics
Part Number
I
(A)
I
(A)
V
max
V
int
/ V
op
I
(A)
P
max.
(W)
Maximum Time
To Trip
Resistance
Agency
Approvals
Current
(A)
Time
(Sec.)
R
min
(
Ω
)
15
R
typ
(
Ω
)
22
R
1max
(
Ω
)
33
250R080T
0.08
0.16
250/60
3
1
0.35
3
X
X
250R080
0.08
0.16
250/60
3
1
0.35
3
14
22
33
X
X
250R120
0.12
0.24
250/60
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
*typical value
C: coated device
T: pre-tripped device
Description
Features
Applications
RoHS compliant and
lead-free
Fast time-to-trip
Binned and sorted narrow
resistance ranges available
0.08 – 0.18 Hold current
range, 60VDC operating
voltage
250VAC interrupt rating
Customer Premises
Equipment (CPE)
Central Office (CO)/
Telecom Centers
LAN/WAN Equipment
Access equipment
250R Series
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E183209
R50082521
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 250R145-RA | POLYFUSE Resettable PTCs Radial Leaded |
| 250R145-RB | POLYFUSE Resettable PTCs Radial Leaded |
| 250R145T | POLYFUSE Resettable PTCs Radial Leaded |
| 250R180 | POLYFUSE Resettable PTCs Radial Leaded |
| 250R180T | POLYFUSE Resettable PTCs Radial Leaded |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 250R145-RA | 制造商:LITTELFUSE 制造商全稱:Littelfuse 功能描述:POLYFUSE Resettable PTCs Radial Leaded |
| 250R145-RAU | 功能描述:可復(fù)位保險(xiǎn)絲 PTC 60V/250V.145A POLY TELECOM RoHS:否 制造商:Bourns 電流額定值: 電阻:7.5 Ohms 最大直流電壓: 保持電流:0.1 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 跳閘電流:0.6 A 引線間隔: 系列:MF-PSHT 工作溫度范圍:- 40 C to + 125 C |
| 250R145-RAZR | 功能描述:可復(fù)位保險(xiǎn)絲 PTC 60V/250V.145A POLY TELECOM RoHS:否 制造商:Bourns 電流額定值: 電阻:7.5 Ohms 最大直流電壓: 保持電流:0.1 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 跳閘電流:0.6 A 引線間隔: 系列:MF-PSHT 工作溫度范圍:- 40 C to + 125 C |
| 250R145-RB | 制造商:LITTELFUSE 制造商全稱:Littelfuse 功能描述:POLYFUSE Resettable PTCs Radial Leaded |
| 250R145-RBU | 功能描述:可復(fù)位保險(xiǎn)絲 PTC 60V/250V.145A POLY TELECOM RoHS:否 制造商:Bourns 電流額定值: 電阻:7.5 Ohms 最大直流電壓: 保持電流:0.1 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 跳閘電流:0.6 A 引線間隔: 系列:MF-PSHT 工作溫度范圍:- 40 C to + 125 C |
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