BF1603-10RKI datasheet, PDF - EEWORLD Datasheet

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BF1603-10RKI: Descriptiontubular vitreous enamelled wirewound resistors; File Size332KB，7 Pages; ManufacturerAll Sensors

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BF1603-10RKI Overview

tubular vitreous enamelled wirewound resistors

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Tubular Vitreous Enamelled

Wirewound Resistors

1600/1900 Series

Welwyn Components

•

Impervious lead free vitreous enamel coating

Can be supplied with fixed, adjustable,

tapped or low inductance winding

Seven termination styles with choice of

mounting arrangements

Manufactured RoHS compliant

Pb-free terminations*

* Check status of stock when ordering

General Information

Vitreous enamelled wirewound resistors are capable of

withstanding a higher dissipation size for size, than any other

protected type; this is attributable to the higher operating

temperature which the wire and enamel can withstand.

Vitreous enamel provides exceptionally good protection to the

wire element and is essentially impervious to moisture. The

resistors can safely be used in harsh environmental conditions.

The Welwyn range is based on thirteen sizes of tube, each of

which has a recommended maximum dissipation which limits

operating surface temperature to a maximum of 375°C.

The stability and high reliability of Welwyn tubular vitreous

resistors is a direct result of the best quality materials being

used in their construction.

High purity ceramic tubes have been matched with nickel

chromium resistance wires and specially formulated enamel to

ensure that the resistors can withstand repeated heat cycling

without damage.

Connections between the resistance element and end

terminations are welded; other connections are brazed.

Mounting devices are available which permit resistors to be

mounted by both ends or by one end. Single ended mounting

is recommended for applications which do not subject the

resistor to shock or vibration.

Ferrules and the F type mounting plug are anchored into the

tubes with high temperature adhesive.

Special requirements, for types or styles not described

in this brochure, will be considered for economic

quantities.

Electrical Data

Power rating at 70°C

Resistance range

Limiting element voltage

TCR (-55 to +200°C)

Resistance tolerance

Values

Thermal impedance

Operating temperature range

watts

ohms

volts

ppm/°C

°C/watt

°C

1605

1601

1905

1602

1906

1603

1604

See Table 1

Typically: <+75

Maximum + 200

1, 2, 5, 10

See table 1 for value restrictions

E24 preferred

See fig. 1

-55 to +375

1908

1607

1606

See Table 1

1608

115

1609

165

1600

16.5

Power rating at 70°C

Resistance range

Limiting element voltage

TCR (-55 to +200°C)

Resistance tolerance

Values

Thermal impedance

Operating temperature range

watts

ohms

volts

ppm/°C

Typically: <+75

1, 2, 5, 10

°C/watt

°C-55 to +375

Maximum + 150

See table 1 for value restrictions

E24 preferred

See fig. 1

Note

See Figure 1 for curves of temperature rise / watts dissipation.

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, relates to current manufacture and is considered accurate at time of going to print.

A subsidiary of

TT electronics plc

Issue E · 10.05

· Bedlington, Northumberland NE22 7AA, UK

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

121

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