Maximum Limits

Temperature Coefficient

SPP-1

±600/°C 0.10

Ω-0.91Ω

±300/°C 1.0

Ω-1200Ω

SPP-2

±600/°C 0.10

Ω-0.91Ω

±300/°C 1.0

Ω-2400Ω

SPP-3

±600/°C 0.10

Ω-0.91Ω

±600/°C 1.0

Ω-2400Ω

Thermal Shock

±5%

Low Shock

±5%

Short Time Overload

±5%

Commercial Short Time Overload

±5%

Resistance to Solder Immersion

±3%

Solderability

95% minimum coverage

Moisture Resistance

±5%

Life Test

±5%

Test Method

EIA Specification RS-344

General Purpose

Wirewound Resistors

SPP Series

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

98

Issue B · 03.02

Welwyn Components

Performance Data

100

80

60

40

20

0

0

50

100

150

200

250

300

Ambient Temperature (

°C)

SPP-1, 2

SPP-3

300

200

100

0

0

20

40

60

80

100

Percent Rated Power

SPP-1

SPP-2

SPP-3

Power Derating:

Temperature Rise:

Packaging

Resistors are supplied taped and reeled. 4,000 pcs per reel.

Bulk pack available.