Philips Components
Product specification
Standard metal film resistors
SFR16S/25/25H
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”.
FEATURES
DESCRIPTION
• Low cost
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.
• Low noise
• Small size (SFR16S).
APPLICATIONS
The resistors are coated with a
coloured lacquer (light-blue for
• General purpose resistors.
QUICK REFERENCE DATA
DESCRIPTION
VALUE
SFR25
1 Ω to 10 MΩ and jumper (0 Ω)
SFR16S
SFR25H
Resistance range
Resistance tolerance
Temperature coefficient:
R < 4.7 Ω
1 Ω to 3 MΩ
±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 V
200 K/W
250 V
150 K/W
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 ≤ 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
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
1998 Aug 28
1