2001 Jan 17
2
BCcomponents
Product specification
Standard metal film resistors
SFR16S/25/25H
5033E/5043E/5053H
FEATURES
• Low cost
• Low noise
• Small size (SFR16S).
APPLICATIONS
• General purpose resistors.
DESCRIPTION
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
coloured 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”.
QUICK REFERENCE DATA
DESCRIPTION
VALUE
SFR16S (5033E)
SFR25 (5043E)
SFR25H (5053H)
Resistance range
1
Ω to 3 MΩ
1
Ω to 10 MΩ and jumper (0 Ω)
Resistance tolerance
±1%; ±5%; E24/E96 series
Temperature coefficient:
R
< 4.7 Ω≤±250 × 10−6/K
≤±100 × 10−6/K
≤±100 × 10−6/K
4.7
Ω≤ R ≤ 100 kΩ≤±100 × 10−6/K
≤±100 × 10−6/K
≤±100 × 10−6/K
100 k
Ω< R ≤ 1MΩ≤±250 × 10−6/K
≤±100 × 10−6/K
≤±100 × 10−6/K
R
> 1MΩ≤±250 × 10−6/K
≤±250 × 10−6/K
≤±250 × 10−6/K
Absolute maximum dissipation
at Tamb =70 °C
0.5 W
0.4 W
0.5 W
Thermal resistance, Rth
170 K/W
200 K/W
150 K/W
Maximum permissible voltage
200 V
250 V
350 V
Noise:
R
< 68 kΩ
max. 0.1
µV/V
max. 0.1
µV/V
max. 0.1
µV/V
68 k
Ω≤ R ≤ 100 kΩ
max. 0.5
µV/V
max. 0.1
µV/V
max. 0.1
µV/V
100 k
Ω≤ R ≤ 1MΩ
max. 1.5
µV/V
max. 0.1
µV/V
max. 0.1
µV/V
R
> 1MΩ
max. 1.5
µV/V
max. 1.5
µV/V
max. 1.5
µV/V
Basic specifications
IEC 60115-1 and 60115-2
Climatic category (IEC 60068)
55/155/56
Stability,
∆R/R max., after:
load:
R
≤ 1MΩ±1% + 0.05 Ω±1% + 0.05 Ω±1% + 0.05 Ω
R
> 1MΩ±1% + 0.05 Ω±1% + 0.05 Ω±2% + 0.1 Ω
climatic tests:
R
≤ 1MΩ±1% + 0.05 Ω±1% + 0.05 Ω±1% + 0.05 Ω
R
> 1MΩ±1% + 0.05 Ω±1% + 0.05 Ω±2% + 0.1 Ω
soldering
±0.25% + 0.05 Ω±0.25% + 0.05 Ω±0.25% + 0.05 Ω
short time overload
±0.25% + 0.05 Ω±0.25% + 0.05 Ω±1% + 0.05 Ω