WRM0207C-470RFI Datasheet, PDF (1/3 Pages) List of Unclassifed Manufacturers – MELF Resistors

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WRM Series
·WRM Series
High reliability
·^{• H}Prⁱe^gd^hic^rt^ea^lib^al^be^ilp^itu^ylse handling capability
·^{• P}To^rele^drⁱa^ctn^ac^be^ls^ed^po^uw^lsn^e t^ho^an0.^d1^l%^{ing capability}
·• ^ToC^lR^erd^aoⁿw^cen^s t^do^o5^wpⁿp^tm^o /⁰°^.C^1%
• ^{TCR down to 5 ppm/°C}
Welwyn Components
Electrical Data
Power rating at 70°C
Resistance range
Limiting element voltage
TCR
Resistance tolerance
Standard values
Thermal impedance
Ambient temperature range
Insulation resistance
Physical Data
Dimensions (mm) and weight (g)
Type
L
D
max
max
WRM 0102
2.2
WRM 0204
3.7
WRM 0207
6.1
1.35
1.55
2.4
watts
ohms
volts
ppm/°C
%
k/W
°C
ohms
WRM 0102
0.125
4R7 - 110K
150
50
1
250
WRM 0204
WRM 0207
0.25
0.4
R22 – 5M1
200
R22 – 10M
250
5,10,15, 25, 50, 100 15, 25, 50, 100
0.1, 0.25, 0.5, 1.0, 2, 5
E24 & E96
200
140
-55 to +125
>10¹⁰
D¹
max
1.3
1.55
2.4
K
Weight
min
0.3
0.01
0.5
0.02
0.5
0.08
L
D₁
D
L¹ K
Construction
A metal film is deposited onto a high dissipation ceramic
former to which tin plated teminating caps are fitted.
The resistor is adjusted to value by a helical cut in the film
and the body is protected by a lacquer coating.
Marking
Resistance values are colour coded with four bands,
three indicating value and one indicating the multiplier.
(Note this describes standard marking, but certain values
may still be supplied with the addition of a tolerance band
following the multiplier.)
Terminations
Material
Plated steel cap.
Solderability The pure tin finish produces ageing free
contacts on which low melting solders can
be used. Dipped area shall be covered with
a smooth and bright solder coating after
3 seconds immersion at 215°C.
Solvent Resistance
The body protection and marking are resistant to all normal
industrial cleaning solvents suitable for printed circuit boards.
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01. 11
09.13