Datasheet > PCF2470KOHMK

PCF2470KOHMK

更新时间： 2024-01-21 04:10:19

品牌	Logo	应用领域
大兴电工 - KOA		PC 电阻器
页数	文件大小	规格书
8页	71K
描述
Fixed Resistor, 2W, 470000ohm, 400V, 10% +/-Tol, Through Hole Mount, AXIAL LEADED

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技术参数
数据手册

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PCF2470KOHMK 技术参数

生命周期：	Active	包装说明：	,
Reach Compliance Code：	compliant	ECCN代码：	EAR99
风险等级：	5.57	其他特性：	FLAMEPROOF
安装特点：	THROUGH HOLE MOUNT	端子数量：	2
最高工作温度：	200 °C	最低工作温度：	-40 °C
封装形状：	TUBULAR PACKAGE	额定功率耗散 (P)：	2 W
额定温度：	70 °C	电阻：	470000 Ω
电阻器类型：	FIXED RESISTOR	子类别：	Fixed Resistors
表面贴装：	NO	端子形状：	WIRE
容差：	10%	工作电压：	400 V
Base Number Matches：	1

PCF2470KOHMK 数据手册

KOA SPEER ELECTRONICS, INC.

SS-02 R3

Flame-proof

(UL-492-2)

The coating cab withstand the overload test, with no possibilities of ignition.

1. Overload Test as per UL-492, Item 13:

A piece of cotton cloth (A piece of gauze untreated corresponding to Nos 32-28

that measures 36 inches in width and 14 - 15 yards per pound) is wound around

a resistor. Then, the resistor is applied with voltage which is increased by two

times, three times, . . . ten times the rated voltage at intervals of one minute till

the resistor is broken down. If the cotton cloth is found igniting, the resistor shall

be considered unacceptable.

The coating is completely proof against any kind of heat sources. Even if

exposed to gas burner flames or heated red with nichrome wire wounded, the

coating will not flame, nor soften and melt to drop.

2. Hot-wire Ignition Test as per UL-492-2, Item 9:

A nichrome wire (Mixture of Cr 20ꢀ and Ni 80ꢀ which measures 0.0201 inches

in diameter and 865 feet per pound, and having 1.61 ohm per foot) is wound a

resistor at intervals of 1/4 inch so as to result in power consumption of 65W or

more. Then, the resistor is heated red with electricity supplied to the nichrome

wire.

Resistance to pulse

Resistance change shall

be 5ꢀ of the Pre-test

value.

Test circuit is shown below.

1 sec. on and 1 sec. off 20,000 cycles.

The voltage is applied with maximum pulse volt-

age shown in Table 1.

10k ohm

C = 1000pF

Low Temperature

Operation

Resistance change shall

be 5ꢀ of the Pre-test

value.

Initial resistance shall be measured. The resistors

shall then be exposed to the air stream at -40°C

3°C for 24 hours with no voltage applied, after

which the resistors shall be placed at room

temperature, final resistance shall be measured.

PAGE 7 OF 8

ꢀ

Bolivar Drive

P.O. Box 547

Bradford, PA 16701

USA

814-362-5536

Fax 814-362-8883

www.koaspeer.com

1...4 5 678

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