APL1600-10RFI WELWYN [Welwyn Components Limited], APL1600-10RFI Datasheet

APL1600-10RFI

Manufacturer Part Number

APL1600-10RFI

Description

Tubular Vitreous Enamelled Wirewound Resistors

Manufacturer

WELWYN [Welwyn Components Limited]

Datasheet

1.APL1600-10RFI.pdf (7 pages)

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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

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

Tubular Vitreous Enamelled

Wirewound Resistors

1600/1900 Series

•

Electrical Data

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.

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

Power rating at 70°C

Resistance range

Limiting element voltage

TCR (-55 to +200°C)

Resistance tolerance

Values

Thermal impedance

Operating temperature range

Power rating at 70°C

Resistance range

Limiting element voltage

TCR (-55 to +200°C)

Resistance tolerance

Values

Thermal impedance

Operating temperature range

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

· Bedlington, Northumberland NE22 7AA, UK

ppm/°C

°C/watt

ppm/°C

°C/watt

watts

ohms

watts

ohms

volts

°C

°C-55 to +375

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.

1601

1605

Typically: <+75

1905

1, 2, 5, 10

Typically: <+75

1908

1, 2, 5, 10

1600

16.5

1607

E24 preferred

-55 to +375

See Table 1

See fig. 1

1602

Welwyn Components

Maximum + 200

See table 1 for value restrictions

1606

1906

Maximum + 150

1608

115

1603

TT electronics plc

A subsidiary of

Issue E · 10.05

1609

165

1604

121

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APL1600-10RFI Summary of contents

Page 1

Tubular Vitreous Enamelled Wirewound Resistors 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 ...

Page 2

Tubular Vitreous Enamelled Wirewound Resistors 1600/1900 Series Electrical Data (continued) Table 1 *Dissipation (watts) to produce operating hotspot temperature (°C) of: Ambient = 20°C Type 200 300 375 1601 1905 7 14.5 20 1600 7 ...

Page 3

Tubular Vitreous Enamelled Wirewound Resistors 1600/1900 Series Physical Data Table 2 Dimensions in millimetres. See fig 2-8 for styles A B Type max max 1601 33.0 17.5 1905 56.1 14.5 1600 61.5 14.5 1602 51.0 17.5 1906 64.3 17.5 1603 ...

Page 4

Tubular Vitreous Enamelled Wirewound Resistors 1600/1900 Series Adjustable Resistors (see Figure 9) Adjustable resistors use the same basic construction as fixed resistors already described, and have a window in the vitreous enamel through which contact is made to the resistive ...

Page 5

Tubular Vitreous Enamelled Wirewound Resistors 1600/1900 Series Tapped Resistors See Figure 10 Fixed resistors can be supplied with taps to special order. Because of the reduced winding length, the total resistance of a tapped resistor will be less than can ...

Page 6

Tubular Vitreous Enamelled Wirewound Resistors 1600/1900 Series Table 6 mounting clip dimension (mm) Clip Type ref. type nom. max nom. max max max ±0.2 1601 52 68 1602 70 86 MD1 1603 90 106 29 19 ...

Page 7

Tubular Vitreous Enamelled Wirewound Resistors 1600/1900 Series Ordering Procedure Specify the full type reference, resistance value and tolerance, using IEC 62 code references. The addition the prefix describing terminal configuration indicates Ayrton-Perry winding. Example: Electrically live ferrule ...

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