Datasheet > NH250188R0BJ01

NH250188R0BJ01

更新时间： 2024-01-29 14:28:04

品牌	Logo	应用领域
威世 - VISHAY		电阻器
页数	文件大小	规格书
4页	180K
描述
RESISTOR, WIRE WOUND, 250 W, 0.1 %, 20 ppm, 188 ohm, CHASSIS MOUNT

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NH250188R0BJ01 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Active	包装说明：	,
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8533.29.00.00	风险等级：	5.75
其他特性：	NON INDUCTIVE	JESD-609代码：	e0
安装特点：	CHASSIS MOUNT	端子数量：	2
最高工作温度：	250 °C	最低工作温度：	-55 °C
封装形状：	RECTANGULAR PACKAGE	包装方法：	BULK
额定功率耗散 (P)：	250 W	额定温度：	25 °C
电阻：	188 Ω	电阻器类型：	FIXED RESISTOR
表面贴装：	NO	技术：	WIRE WOUND
温度系数：	20 ppm/ °C	端子面层：	Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier
端子形状：	BINDING POST	容差：	0.1%

NH250188R0BJ01 数据手册

RH, NH

Wirewound Resistors, Military, MIL-PRF-18546 Qualified,

Type RE, Aluminum Housed, Chassis Mount

Vishay Dale

TECHNICAL SPECIFICATIONS

PARAMETER

UNIT

RH RESISTOR CHARACTERISTICS

100 for 0.1 Ω to 0.99 Ω, 50 for 1 Ω to 9.9 Ω, 20 for 10 Ω and above

1000 for RH/5, RH-10 and RH/25, 2000 for RH/50, 4500 for RH/100 and RH/250

5 × rated power for 5 seconds

Temperature Coefficient

Dielectric Withstanding Voltage

Short Time Overload

ppm/°C

V_AC

(P x R)^1/2

Maximum Working Voltage

Insulation Resistance

10 000 MΩ minimum dry, 1000 MΩ minimum after moisture test

5 minimum for RH-5 and RH-10, 10 minimum for all others

MIL-PRF-18546 Type - Meets requirements of ANSI J-STD-002

- 55/+ 250

Terminal Strength

Solderability

Operating Temperature Range

°C

POWER RATING

Vishay RH resistor wattage ratings are based on mounting to the following heat sink:

RH-5 and RH-10:

RH-25:

RH-50:

4" × 6" × 2" × 0.040" thick aluminum chassis (129 sq. in. surface area)

5" × 7" × 2" × 0.040" thick aluminum chassis (167 sq. in. surface area)

12" × 12" × 0.059" thick aluminum panel (291 sq. in. surface area)

12" × 12" × 0.125" thick aluminum panel (294 sq. in. surface area)

RH-100 and RH-250:

AMBIENT TEMPERATURE DERATING

Derating is required for ambient temperatures above 25 °C, see the following graph.

Curves A, B, C apply to operation of unmounted resistors. Curve D applies to all types when mounted to specified heat sink.

A = RH-5 and RH-10 size resistor, unmounted

B = RH-25 size resistor, unmounted

C = RH-50, RH-100 and RH-250 size resistor, unmounted

D = All types mounted to recommended aluminum heat sink

120

100

- 55 - 50

150

250

AMBIENT TEMPERATURE IN °C

Derating

REDUCED HEAT SINK DERATING:

100

Derating is also required when recommended heat sink

area is reduced.

A = RH-5 and RH-10 size resistor

B = RH-25 size resistor

C = RH-50, RH-100 and RH-250 size resistor

100

% OF RECOMMENDED HEAT SINK AREA

Heat Sink Derating

www.vishay.com

168

For technical questions, contact: ww2bresistors@vishay.com

Document Number: 30201

Revision: 11-Jul-07

1 234

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