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TT electronics - Resistors

Numéro de référence WRM0207
Description Resistors
Fabricant TT electronics 
Logo TT electronics 





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WRM0207 fiche technique
MMEELLFF
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WRM Series
WRM Series
··
High reliability
HPriegdhicrtealibalbeilpituylse
handling
capability
·PToreledriactnacbelsedpouwlsne thoan0.d1l%ing capability
·ToClRerdaonwcens tdoo5wpnptmo /0°.C1%
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
max
D
max
WRM 0102
WRM 0204
WRM 0207
2.2
3.7
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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A subsidiary of
www.bitechnologies.com www.irctt.com wwTwT .ewleeclwtroynn-ictts.cpolcm
©©TeleTWpTheoelnlwee:cy+tn4ro4Cn(0oi)cm1s6pp7o0lcn8e22n1t8s1L·iFmacistiemdile·:
Bedlington, Northumberland NE22 7AA, UK
+44 (0) 1670 829465 · Email: [email protected]
·
Website:
www.welwyn-tt.com
01. 11
09.13
http://www.Datasheet4U.com

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