SPW Datasheet, PDF (1/3 Pages) Vishay Siliconix – Carbon Film Resistors, Special Purpose High Frequency Load (Tubes)

SPW
Vishay Dale
Carbon Film Resistors, Special Purpose
High Frequency Load (Tubes)
STANDARD ELECTRICAL SPECIFICATIONS
FEATURES
• High stability and excellent high frequency characteristics
• Particularly suited for high frequency applications involving
high power, high accuracy RF measurements
• Carbon film construction
APPLICATIONS
High frequency wattmeters for output measurement in radio,
TV and radar transmitters, dielectric heating and similar RF
generating equipment. Ideal for use as non-reactive radio
frequency terminations. Special high power designs with
internal water cooling are available. Contact factory.
GLOBAL
MODEL
SPW236
SPW227
SPW210
SPW214
SPW212
HISTORICAL
MODEL
SPW-236
SPW-227
SPW-210
SPW-214
SPW-212
POWER RATING
WATTAGE FREE AIR
P25°C
W
120
55
40
10
2
RESISTANCE
TOLERANCE
%
± 2, ± 5
± 2, ± 5
± 2, ± 5
± 2, ± 5
± 2, ± 5
LINEARITY
TOLERANCE
%
± 10
± 10
± 10
± 10
± 10
RESISTANCE
RANGE
Ω
50 ohm standard.
Other values
available
on special order.
TEMPERATURE
COEFFICIENT
ppm/°C
± 200 average
± 250 maximum
Cooling:
Approximate increase in wattage when forced air cooling is
employed is 3 times wattages shown and for liquid cooling
(with heat exchanger) is 60 times wattages shown. The
limiting factor insofar as the resistor is concerned is the film
temperature. This should not exceed +200°C and for maximum
stability should not exceed +150°C.
MECHANICAL SPECIFICATIONS
Identification:
Type designation resistance value, tolerance
and code date of manufacture are printed on
each unit.
Terminations:
All types electroplated copper except
SPW-212. The SPW-212 has silver coated
termination bands.
MARKING
— DALE
— Model
— Value
— Tolerance
— Date code
GLOBAL PART NUMBER INFORMATION
New Global Part Numbering: SPW21050R00JSL (preferred part numbering format)
S PW 21 0 5 0 R 0 0 J S L
GLOBAL MODEL
(see Standard Electrical
Specification Table)
RESISTANCE VALUE
R = Decimal
25R00 = 25Ω
600R0 = 600Ω
TOLERANCE CODE
G = ± 2%
J = ± 5%
K = ± 10%
PACKAGING
SL = Custom Package
Historical Part Number: SPW-210505% (will continue to be accepted)
SPW-210
50
5%
S51
SPECIAL
Blank = Standard
(Dash Number)
(up to 3 digits)
From 1-999 as
applicable
HISTORICAL MODEL
RESISTANCE VALUE
TOLERANCE CODE
PACKAGING
www.vishay.com
208
For Technical Questions, contact [e-mail]
Document Number: 31038
Revision 06-Sep-04