BCcomponents
DATA SHEET
MRS16; MRS25
Professional leaded resistors
Maintenance types (not for new designs)
File under BCcomponents, BC08
2000 Sep 06
BCcomponents
Maintenance types (not for new designs)
Professional leaded resistors
FEATURES
DESCRIPTION
MRS16; MRS25
•
Professional resistors in small outlines
•
Low noise.
APPLICATIONS
•
All general purpose applications.
A homogeneous film of metal alloy is deposited on a high
grade ceramic body. After a helical groove has been cut in
the resistive layer, tinned connecting wires of electrolytic
copper are welded to the end-caps. The resistors are coated
with lacquer which provides electrical, mechanical, and
climatic protection. Four or five colour code rings designate
the resistance value and tolerance according to
IEC 60 062.
Suitable replacements for MRS16 and MRS25 are the
MBA 0204 and MBB 0207 professional.
QUICK REFERENCE DATA
DESCRIPTION
Resistance range
Resistance tolerance and series
Maximum dissipation at
T
amb
= 70
°
C
Thermal resistance (R
th
)
Temperature coefficient
Maximum permissible voltage (DC or RMS)
Basic specifications
Climatic category (IEC 60068)
Max. resistance change for resistance range,
∆
R/R
max., after:
load:
R
≤
100 k
Ω
R > 100 k
Ω
climatic tests:
R
≤
100 k
Ω
R > 100 k
Ω
soldering:
R
≤
100 k
Ω
R > 100 k
Ω
short time overload
200 V
IEC 60115-1 and 60115-2
55/155/56
0,4 W
170 K/W
VALUE
MRS16
4,99
Ω
to 1 M
Ω
MRS25
1
Ω
to 10 M
Ω
±
1%; E24/E96 series
0,6 W
150 K/W
±
50 ppm/K
350 V
±
(0,5% + 0,05
Ω)
±
(1% + 0,05
Ω)
±
(0,5% + 0,05
Ω)
±
(1% + 0,05
Ω)
±
(0,1% + 0,05
Ω)
±
(0,25% + 0,05
Ω)
±
(0,25% + 0,05
Ω)
±
(0,5% + 0,05
Ω)
±
(0,5% + 0,05
Ω)
±(
0,5% + 0,05
Ω)
±
(0,5% + 0,05
Ω)
±(
0,1% + 0,05
Ω)
±(
0,1% + 0,05
Ω)
±(
0,25% + 0,05
Ω
)
2000 Sep 06
2
BCcomponents
Maintenance types (not for new designs)
Professional leaded resistors
ORDERING INFORMATION
Numeric Ordering code (12NC)
MRS16; MRS25
•
The resistors have a 12-digit ordering code starting with 2322 15.
•
The subsequent 2 digits indicate the resistor type and packaging; see Table 1.
•
The remaining 4 digits indicate the resistance value:
– The first 3 digits indicate the resistance value.
– The last digit indicates the resistance decade in accordance with Table 2.
Table 1
Ordering code indicating resistor type and packaging
ORDERING CODE 2322 15. .....
TYPE
BANDOLIER IN AMMOPACK
1000 units
MRS16
MRS25
7 1....
6 1....
5000 units
7 2....
6 2....
BANDOLIER ON REEL
5000 units
7 3....
6 3....
Table 2
Last digit of 12NC indicating resistance decade
LAST DIGIT
8
9
1
2
3
4
5
6
O
RDERING EXAMPLE
The ordering code of a MRS16 resistor, value 750
Ω
, on a
bandolier of 1000 units in ammopack is: 2322 157 17501.
RESISTANCE DECADE
1 to 9,76
Ω
10 to 97,6
Ω
100 to 976
Ω
1 to 9,76 k
Ω
10 to 97,6 k
Ω
100 to 976 k
Ω
1 to 9,76 M
Ω
10 M
Ω
2000 Sep 06
3
BCcomponents
Maintenance types (not for new designs)
Professional leaded resistors
MECHANICAL DATA
Outlines
MRS16; MRS25
L
D
d
M
For dimensions see Table 3.
Fig.2 Outline.
Table 3
TYPE
MRS 16
MRS 25
Note
1. Due to the various sources of production, delivery of specific versions (A or B) of MRS 16 cannot be guaranteed.
Leaded resistor types, mass and relevant physical dimensions; see Fig.2
VERSION
A
B
D
max
(mm)
1.6
1.9
2.5
L
max
(mm)
3.6
3.4
6.5
d
nom
(mm)
0.5
0.5
0.6
M
min
(mm)
5.0
5.0
10.0
MASS
(mg)
125
125
700
−
2000 Sep 06
4
