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250R の電気的特性と機能

250RのメーカーはLittelfuseです、この部品の機能は「POLYFUSE Resettable PTCs Radial Leaded」です。


製品の詳細 ( Datasheet PDF )

部品番号 250R
部品説明 POLYFUSE Resettable PTCs Radial Leaded
メーカ Littelfuse
ロゴ Littelfuse ロゴ 




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250R Datasheet, 250R PDF,ピン配置, 機能
POLYFUSE® Resettable PTCs
Radial Leaded
250R Series
Description
• 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.
Agency Approvals
AGENCY AGENCY FILE NUMBER
E183209
R50082521
Features
• 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
Applications
• Customer Premises
Equipment (CPE)
• Central Office (CO)/
Telecom Centers
• LAN/WAN Equipment
• Access equipment
Electrical Characteristics
www.DataSheet4U.com
Part Number
I hold
(A)
I trip
Vmax
I max
(A) Vint / Vop (A)
250R080T
250R080
250R120
250R120-RA
250R120-RC
250R120-RF
250R120-R1
250R120-R2
250R120-R3
250R120T
250R145
250R145-RA
250R145-RB
250R145T
250R180
250R180T
0.08 0.16 250/60
0.08 0.16 250/60
0.12 0.24 250/60
0.12 0.24 250/60
0.12 0.24 250/60
0.12 0.24 250/60
0.12 0.24 250/60
0.12 0.24 250/60
0.12 0.24 250/60
0.12 0.24 250/60
0.145 0.29 250/60
0.145 0.29 250/60
0.145 0.29 250/60
0.145 0.29 250/60
0.18 0.65 250/60
0.18 0.65 250/60
*typical value
C: coated device
T: pre-tripped device
3
3
3
3
3
3
3
3
3
3
3
3
3
3
10
10
mPadx.
(W)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1.8
1.8
Maximum Time
To Trip
Current Time
(A) (Sec.)
0.35 3
0.35 3
1 1.5
1 1.0
1 0.85
1 0.7
1 0.8
1 0.7
11
1 1.2
1 2.5
15
1 2.5
1 2.0
1 21
1 20
Resistance
R min
(Ω)
15
14
4
7
5.4
6
6
8
8
7
3
3
4.5
5.4
0.8
1.4
R typ
(Ω)
22
22
8
9
7.5
10.5
9
10.5
10
12
6
5.5
6
7.5
2.2
3.9
R 1max
(Ω)
33
33
16
16
14
16
16
16
16
16
14
12
14
14
4
4.5
Agency
Approvals
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
250R Series
Specifications are subject to change without notice.

Electronics Designers Guide
www.littelfuse.com
©2006 Littelfuse

1 Page





250R pdf, ピン配列
POLYFUSE® Resettable PTCs
Radial Leaded
Agency Specification Selection Guide For Telecom and Networking Applications
Product
250R120
250R145
250R180
Lightning
ITU K.20/21/45 – 1.5kV 10/700μs
ITU K.20/21/45 – 4kV 10/700μs*
ITU K.20/21/45 – 1.5kV 10/700μs
ITU K.20/21/45 – 4kV 10/700μs*
Telcordia GR – 974 – 1.0kV 10/1000μs
*Devices should be independently evaluated and tested for use in any specific application
Power Cross
ITU K.20/21/45 – 230Vac, 10Ω
ITU K.20/21/45 – 600Vac, 600Ω
ITU K.20/21/45 – 230Vac, 10Ω
ITU K.20/21/45 – 600Vac, 600Ω
Telcordia GR – 974- 283Vac, 10A
Protection Application Guide
Region/Specification
South America/Asia/Europe
ITU K.45
South America/Asia/Europe
ITU K.21
South America/Asia/Europe
ITU K.20
Application
*Access network equipment
Remote terminal
Repeaters
WAN equipment
Cross –connect
Customer and IT equipment
Analog modems
ADSL, xDSL
Phone sets, PBX systems
Internet appliances
POS terminals
Central Office
POTS/ISDN linecards
T1/E1/J1 linecards
ADSL/VDSL splitters
CSU/DSU
North America
Telcordia GR-974
South America/Asia/Europe
ITU K.20
*Primary protection modules
MDF modules
Network interface
North America
Telcordia GR-1089
South America/Asia/Europe
ITU K.20 and K.21
*Intrabuilding communication systems
LAN, VOIP cards
Local loop handsets
LAN Intrabuilding power cross
Protection
LAN equipment, IP phone
*Resistance binned parts are recommended
Device Selection
250R180
250R180T
250R145
250R145T
250R120
250R120T
250R180
250R180T
250R145
250R145T
250R120
250R120T
250R180
250R180T
250R145
250R145T
250R120
250R120T
250R180
250R180T
250R145
250R145T
250R120
250R120T
250R180
250R180T
250R145
250R145T
250R120
250R120T
250R080
250R Series
Specifications are subject to change without notice.

Electronics Designers Guide
www.littelfuse.com
©2006 Littelfuse


3Pages


250R 電子部品, 半導体
POLYFUSE® Resettable PTCs
Radial Leaded
Part Numbering System
250 R 120 - RA Z R
SERIES
PACKAGING STYLE BLANK: Bulk
R: Tape & Ammo
QUANTITY CODE: M=1000 U=500 Z=1200
Rx: Resistance Range (x = A-Z or 1-9) [not applicable for all parts]
T: PRE-TRIPPED DEVICE (OPTIONAL)
I CURRENT CODE (SEE TABLE BELOW)
HOLD
R: RADIAL
PEAK VOLTAGE RATING
Packaging
I hold
(A)
0.080
0.120
0.145
0.180
I hold
Code
080
120
145
180
Packaging
Option
Bulk
Tape and Ammo
Bulk
Tape and Ammo
Bulk
Tape and Ammo
Bulk
Tape and Ammo
Quantity
500
1500
500
1200
500
1200
200
1000
Quantity &
Packaging Codes
U
DR
U
ZR
U
ZR
F
MR
250R Series
Specifications are subject to change without notice.

Electronics Designers Guide
www.littelfuse.com
©2006 Littelfuse

6 Page



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