Datasheet > 1601

1601

更新时间： 2024-11-05 07:15:27

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TTELEC		电阻器线绕电阻器
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Tubular Vitreous Enamelled Wirewound Resistors

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1601 数据手册

Tubular Vitreous Enamelled

Wirewound Resistors

Welwyn Components

1600/1900 Series

•

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.

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.

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.

Ferrules and the F type mounting plug are anchored into the

tubes with high temperature adhesive.

The stability and high reliability of Welwyn tubular vitreous

resistors is a direct result of the best quality materials being

used in their construction.

Special requirements, for types or styles not described

in this brochure, will be considered for economic

quantities.

High purity ceramic tubes have been matched with nickel

Electrical Data

1601

1905

1600

1602

1906

1603

1604

Power rating at 70°C

Resistance range

watts

16.5

ohms

volts

See Table 1

Limiting element voltage

TCR (-55 to +200°C)

Resistance tolerance

Values

ppm/°C

Typically: <+75

1, 2, 5, 10

Maximum + 200

See table 1 for value restrictions

E24 preferred

Thermal impedance

Operating temperature range

°C/watt

°C

See fig. 1

-55 to +375

1605

1908

1607

1606

1608

1609

Power rating at 70°C

Resistance range

watts

ohms

volts

115

165

See Table 1

Limiting element voltage

TCR (-55 to +200°C)

Resistance tolerance

Values

ppm/°C

Typically: <+75

1, 2, 5, 10

Maximum + 150

See table 1 for value restrictions

E24 preferred

See fig. 1

Thermal impedance

Operating temperature range

°C/watt

°C-55 to +375

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.

A subsidiary of

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

TT electronics plc

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

Issue E · 10.05

121

12 3 4 5 6 7

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