SFR16S/25/25H
Vishay BCcomponents
Standard Metal Film Resistors
FEATURES
• Low cost
• Low noise
• Small size (SFR16S)
• Lead (Pb)-free solder contacts
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 leads of electrolytic
copper are welded to the end-caps.
The resistors are coated with a colored lacquer (light-blue for
type SFR16S; light-green for type SFR25 and red-brown for
type SFR25H) which provides electrical, mechanical and
climatic protection. The encapsulation is resistant to all
cleaning solvents, in accordance with “MIL-STD-202E,
method 215”, and “IEC 60068-2045”.
• Pure tin plating provides compatibility with lead (Pb)-free
and lead containing soldering processes
• Compatible with “Restriction of the use of Hazardous
Substances” (RoHS) directive 2002/95/EC (issue 2004)
APPLICATIONS
• General purpose resistors
TECHNICAL SPECIFICATIONS
VALUE
DESCRIPTION
SFR16S
SFR25
SFR25H
5 %; 0.22 Ω to 10 MΩ
1 %; 1 Ω to 10 MΩ
Resistance range
5 %; 1 Ω to 3 MΩ
1 %;
4.99 Ω to 3 MΩ
jumper (0 Ω)
jumper (0 Ω)
Resistance tolerance
Temperature coefficient:
R < 4.7 Ω
1 %, E24/E96 series; 5 %, E24 series
≤
≤
≤
≤
250 × 10-6/K
100 × 10-6/K
250 × 10-6/K
250 × 10-6/K
0.5 W
≤
≤
≤
≤
100 × 10-6/K
100 × 10-6/K
100 × 10-6/K
250 × 10-6/K
0.4 W
≤
≤
≤
≤
100 × 10-6/K
100 × 10-6/K
100 × 10-6/K
250 × 10-6/K
0.5 W
4.7 Ω ≤ R ≤ 100 kΩ
100 kΩ < R ≤ 1 MΩ
R > 1 MΩ
Absolute maximum dissipation at Tamb = 70 °C
Thermal resistance, Rth
Maximum permissible voltage
Noise:
170 K/W
200 K/W
150 K/W
200 V
250 V
350 V
R < 68 kΩ
max. 0.1 µV/V
max. 0.5 µV/V
max. 1.5 µV/V
max. 1.5 µV/V
max. 0.1 µV/V
max. 0.1 µV/V
max. 0.1 µV/V
max. 0.1 µV/V
max. 0.1 µV/V
max. 1.5 µV/V
68 kΩ ≤ R ≤ 100 kΩ
100 kΩ ≤ R ≤ 1 MΩ
R > 1 MΩ
max. 0.1 µV/V
max. 1.5 µV/V
Basic specifications
Climatic category (IEC 60068)
Stability, ∆R/R max., after:
load:
IEC 60115-1 and 60115-2
55/155/56
R range
2 % + 0.05 Ω
2 % + 0.05 Ω
2 % + 0.05 Ω
climatic tests:
R ≤ 1 MΩ
1 % + 0.05 Ω
1 % + 0.05 Ω
1 % + 0.05 Ω
1 % + 0.05 Ω
1 % + 0.05 Ω
2 % + 0.1 Ω
R > 1 MΩ
Soldering
0.25 % + 0.05 Ω
0.25 % + 0.05 Ω
0.25 % + 0.05 Ω
0.25 % + 0.05 Ω
0.25 % + 0.05 Ω
1 % + 0.05 Ω
Short time overload
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For technical questions contact: ff3dresistors@vishay.com
Document Number: 28722
Revision: 08-Dec-05