Precision Metal
Film Resistors
RC SERIES
Table of Resistance Restrictions
TCR
ppm/擄C
5
10
15
25
50
100
RC55
0.05%
.1 鈥?.25%
10 to 500k 10 to 500k
10 to 1M 10 to 1M
10 to 1M
5 to 1M
10 to 1M
5 to 2M
10 to 1M
5 to 2M
10 to 1M
1 to 2M
TOLERANCE
RC65
.5 鈥?1%
0.05%
.1 鈥?.25%
1 to 500k 10 to 500k 10 to 500k
1 to 1M
10 to 1M 10 to 1M
1 to 1M
10 to 1M
5 to 1M
1 to 2M
10 to 1M
5 to 2M
1 to 4M
10 to 1M
5 to 2M
1 to 4M
10 to 1M
1 to 2M
.5 鈥?1%
1 to 500k
1 to 1M
1 to 1M
1 to 2M
1 to 4M
1 to 4M
RC70
0.05%
.1 鈥?.25%
10 to 750k 10 to 750k
10 to 1M 10 to 1M
10 to 1M 10 to 2M
10 to 1M 10 to 5M
10 to 1M 5 to 10M
10 to 1M 1 to 10M
.5 鈥?1%
1 to 750k
1 to 1M
1 to 2M
1 to 5M
1 to 10M
1 to 10M
APPLICATION NOTES
Matched Sets and Networks
Welwyn has many years experience in the supply of
matched set of precision resistors.
Resistors can be supplied matched for tolerance and
TCR down to 鹵0.02% and 鹵2ppm/擄C, either as
separate resistors or pre-assembled and
encapsulated within a plastic box.
The individual resistors within a set or module can
be manufactured with a tolerance of 鹵0.05% and
TCR of 鹵5ppm/擄C.
PACKAGING
The standard method of packaging RC55 resistors is
taped in ammo packs. Taped resistors on reel or
loose packed components can also be supplied by
special request. The standard packaging for RC65
and RC70 resistors is loose in boxes. By special
request the RC65 components can also be supplied
taped on reel or in ammo pack. In the case of tape
packed components the usable lead length is
reduced by the width of the tape.
5
f
1
6
52
f
2
6
Body location f
1
鈥?f
2
鈮?/div>
1.4 mm
STANDARD QUANTITIES PER PACKAGE
Type
Small Box
Large Box
Reel
Large Ammo Pack
RC55
250
1000
5000
1000
RC65
125
500
2500
1000
RC70
25
250
-
-
漏 Welwyn Components Limited
Bedlington, Northumberland NE22 7AA, England Tel: 01670 822181 Fax: 01670 829465 Web: http://www.Welwyn-TT.co.uk
Issue A 07/99
175
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