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LVB125: 产品描述PTC RESET FUSE 240V 1.25A RADIAL; 产品类别电路保护; 文件大小339KB，共3页; 制造商Littelfuse; 官网地址http://www.littelfuse.com; 标准

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LVB125概述

PTC RESET FUSE 240V 1.25A RADIAL

LVB125规格参数

参数名称	属性值
类型	聚合物
电压 - 最大值	240V
电流 - 最大值	12.5A
电流 - 保持（Ih）（最大值）	1.25A
电流 - 跳闸（It）	2.5A
跳闸时间	5s
电阻 - 初始（Ri）（最小值）	152 mOhms
电阻 - 跳断后（R1）（最大值）	482 mOhms
工作温度	-40°C ~ 85°C
安装类型	通孔
封装/外壳	径向，圆片式
大小/尺寸	0.984" 长 x 0.175" 宽（25.00mm x 4.40mm）
高度 - 安装（最大值）	1.071"（27.20mm）
引线间距	0.400"（10.15mm）
认可	UL

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PolySwitch®

PTC Devices

Overcurrent Protection Device

PRODUCT: LVB125

DOCUMENT: SCD28306

REV LETTER: C

REV DATE:JULY 26, 2016

PAGE NO.: 1 OF 3

Specification Status: Released

Rated Operating Voltage at 25 °C:

240 V

Maximum Interrupt Voltage / Current at 25 °C:

265 V

, 12.5 A

Insulating Material:

Glass reinforced PBT (meeting UL94 V-0 requirements)

Lead Material:

20 AWG Tin-Plated Copper (0.81mm/0.032” nominal

diameter)

Marking:

Manufacturer’s Mark

B125

and Part Identification

Lot Identification

TABLE I. DIMENSIONS:

mm:

In*:

MIN

24.8

(0.98)

MAX

25.2

(0.99)

MIN

26.8

(1.06)

MAX

27.2

(1.07)

MIN

8.9

(0.35)

MAX

11.4

(0.45)

MIN

5.1

(0.20)

MAX

(--)

MIN

4.2

(0.17)

MAX

4.6

(0.18)

MIN

20.0

(0.79)

MAX

20.3

(0.80)

MIN MAX

2.5

(0.1

*Rounded off approximation

TABLE II. PERFORMANCE RATINGS @ 25 °C:

RESISTANCE TIME TO TRIP(SEC)

HOLD

TRIP

(Ω)

@8A

CURRENT CURRENT

(A)

MIN

MAX

1.25

2.50

0.152 0.292

Agency Recognitions:

Reference Documents:

Precedence:

Effectivity:

Caution:

POST-TRIP

RESISTANCE

(Ω)

MAX

0.482

OPERATING

TEMPERATURE

(℃)

MIN

-40

MAX

TRIPPED-STATE

POWER

DISSIPATION

@ 240 V (W)

MAX

PS300, UL1434

This specification takes precedence over documents referenced herein.

Reference documents shall be the issue in effect on the date of invitation for bid.

Operation beyond the rated voltage or current may result in rupture, electrical arcing or flame.

ELV Compliant

Pb-Free

Materials Information

ROHS Compliant

Specifications are subject to change without notice

Revised July 26, 2016

littelfuse.com

PolySwitch®

PTC Devices

Overcurrent Protection Device

PRODUCT: LVB125

DOCUMENT: SCD28306

REV LETTER: C

REV DATE:JULY 26, 2016

PAGE NO.: 2 OF 3

Warning: Application Limitations for the LVB Product Line

1. Users should independently evaluate the suitability of and test each product selected for

their own application.

2. This product should not be used in an application where the maximum interrupt voltage or

maximum interrupt current can be exceeded in a fault condition. Operation beyond the

maximum ratings or improper use may result in device damage and possible electrical

arcing and flame.

3. A PPTC device is not a fuse - it is a nonlinear thermistor that limits current. Under a fault

condition all PPTC devices go into a high resistance state but do not open circuit,

so hazardous voltage may be present at PPTC locations.

4. The devices are intended for protection against occasional overcurrent or over

temperature

fault conditions and should not be used when repeated fault conditions or prolonged trip

events are anticipated.

5. In most applications, power must be removed and the fault condition cleared in order to

reset a PPTC device; however, under certain unusual conditions, a PPTC device may

automatically reset. PPTC devices should not be used in an application where an

automatic reset could create a safety hazard, such as garbage disposals and blenders.

Appropriate qualification testing should be performed.

6. It is the responsibility of the user to determine the need for back up or fail safe protection

to prevent damage that may occur in the event of abnormal function or failure of the

PTC device.

7. Operation in circuits with a large inductance can generate a circuit voltage (Ldi/dt) above

the rated voltage of a PPTC device. This product should not be used in an application

where the maximum interrupt voltage or maximum interrupt current can be exceeded by

inductive

spikes.

8. Devices are not recommended for reflow soldering.

9. Device performance can be impacted negatively if devices are handled in a manner

inconsistent with recommended electronic, thermal, or mechanical procedures for

electronic components.