Datasheet > FN4

FN4

更新时间： 2022-12-28 03:48:36

品牌	Logo	应用领域
TTELEC		电阻器膜电阻器薄膜电阻器
页数	文件大小	规格书
2页	145K
描述
Fusible Nickel Film Resistors

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FN4 数据手册

Fusible Nickel

Film Resistors

Welwyn Components

FN Series

• Predictable fusing characteristics

Constant current fusing

•

Flameproof

•

Electrical Data

FN4

Power rating at 70°C

Resistance range

watts

ohms

0.4

0R1 to 20R

TCR

ppm/°C

See Figure 1

5, 10, 20

E24 preferred

215

Resistance tolerance*

Standard values

Thermal impedance

Ambient temperature range

°C/watt

°C

-55 to 155

* Below 1R, 10 and 20% only.

Physical Data

Dimensions (mm) & Weight (g)

PCB

Min.

bend

radius

mounting

centres

Wt.

Type

L Max

6.2

D Max

2.5

f min

21.0

d nom

0.6

nom

FN4

10.2

0.6

0.3

Construction

Marking

The nickel film is deposited on a high purity ceramic rod. End

caps are force fitted and termination wires welded to the

caps. The resistive film is adjusted to the required value by a

helical cut; finally the flame retardant lacquer protection is

applied to the resistor body and the resistor is marked with an

indelible ink.

Resistors are colour coded with five bands. Four of the bands

are used to indicate value and tolerance, with IEC 62 colours

being used. A fifth black band denotes constant current

fusibility.

Solvent Resistance

The body protection and marking are resistant to all normal

Terminations

industrial cleaning solvents suitable for printed circuits.

Material

Solder-coated copper wire.

Flammability

Strength

The terminations meet the requirements of

IEC 68.2.21

The resistors will not burn or emit encandescent particles

under any condition of applied temperature or power

overload.

Solderability The terminations meet the requirements of

IEC 115-1, Clause 4.17.3.2

General Note

Welwyn Components reserves the right to make changes in product specification without notice or liability.

All information is subject to Welwyn’s own data and is considered accurate at time of going to print.

A subsidiary of

TT electronics plc

Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com

Issue B · 03.02

168

中文翻译

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