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BCcomponents
DATA SHEET
SFR16S/25/25H Standard metal film resistors
Product specification Supersedes data of 17th April 2002 File under BCcomponents, BC08 2002 Dec 02
BCcomponents
Product specification
Standard metal film resistors
FEATURES 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
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 60 068-2045".
* Low cost * Low noise * Small size (SFR16S).
APPLICATIONS
* General purpose resistors.
QUICK REFERENCE DATA DESCRIPTION Resistance range VALUE SFR16S SFR25 SFR25H
5%; 1 W to 3 MW 1%; 4.99 W to 3 MW
5%; 0.22 W to 10 MW 1%; 1 W to 10 MW jumper (0 W) 1%, E24/E96 series; 5%, E24 series
Resistance tolerance Temperature coefficient: R < 4.7 W 4.7 W R 100 kW 100 kW < R 1 MW R > 1 MW Absolute maximum dissipation at Tamb = 70 C Thermal resistance, Rth Maximum permissible voltage Noise: R < 68 kW 68 kW R 100 kW 100 kW R 1 MW R > 1 MW Basic specifications Climatic category (IEC 60 068) Stability, DR/R max., after: load: R 1 MW R > 1 MW climatic tests: R 1 MW R > 1 MW soldering short time overload max. 0.1 mV/V max. 0.5 mV/V max. 1.5 mV/V max. 1.5 mV/V
250 10-6/K 100 250
10-6/K 10-6/K
100 10-6/K 100 100
10-6/K 10-6/K
100 10-6/K 100 10-6/K 100 10-6/K 250 10-6/K
0.5 W 150 K/W 350 V max. 0.1 mV/V max. 0.1 mV/V max. 0.1 mV/V max. 1.5 mV/V
250 10-6/K
0.5 W 170 K/W 200 V
250 10-6/K
0.4 W 200 K/W 250 V max. 0.1 mV/V max. 0.1 mV/V max. 0.1 mV/V max. 1.5 mV/V IEC 60 115-1 and 60 115-2 55/155/56
1% + 0.05 W 1% + 0.05 W 1% + 0.05 W 1% + 0.05 W 0.25% + 0.05 W 0.25% + 0.05 W
1% + 0.05 W 1% + 0.05 W 1% + 0.05 W 1% + 0.05 W 0.25% + 0.05 W 0.25% + 0.05 W
1% + 0.05 W 2% + 0.1 W 1% + 0.05 W 2% + 0.1 W 0.25% + 0.05 W 1% + 0.05 W
2002 Dec 02
2
BCcomponents
Product specification
Standard metal film resistors
ORDERING INFORMATION Table 1 12NC ordering code indicating resistor type and packaging ORDERING CODE 23.. ... ..... TYPE TOL. RADIAL TAPED 4 000 units SFR16S BANDOLIER IN AMMOPACK STRAIGHT LEADS 1 000 units ..22 187 73...
SFR16S/25/25H
BANDOLIER ON REEL STRAIGHT LEADS 5 000 units ..06 187 23... ..06 187 1.... ..06 187 90013 ..22 181 63... ..06 181 8.... ..06 181 90011 ..06 186 63... ..06 186 8....
5 000 units ..22 187 53... ..06 187 3...
5% 1%
jumper(1)
..06 184 03...
..22 181 53...
..22 181 43... ..22 188 2... ..22 181 90019 ..22 186 76... ..22 186 3....
5%
SFR25
1%
jumper(1)
-
..22 186 16...
SFR25H Note
5% 1%
-
1. The jumper has a maximum resistance Rmax = 10 mW at 5 A. Composition of the 12NC Table 2 Last digit for 5% tolerance LAST DIGIT 7 8 9 1 2 3 4 5 6 ORDERING EXAMPLE: 12NC The ordering code of a SFR25 resistor, value 5 600 W 5%, taped on a bandolier of 5 000 units in ammopack is: 2322 181 43562. Table 3 Last digit for 1% tolerance LAST DIGIT 8 9 1 2 3 4 5 6
* The resistors have a 12-digit ordering code starting with 23 * The subsequent 7 digits indicate the resistor type and packaging; see Table 1. * The remaining digits indicate the resistance value:
- The first 2 or 3 digits indicate the resistance value. - The last digit indicates the resistance decade in accordance with Tables 2 or 3.
RESISTANCE DECADE 0.10 to 0.91 W 1 to 9.1 W 10 to 91 W 100 to 910 W 1 to 9.1 kW 10 to 91 kW 100 to 910 kW 1 to 9.1 MW
RESISTANCE DECADE 1 to 9.76 W 10 to 97.6 W 100 to 976 W 1 to 9.76 kW 10 to 97.6 kW 100 to 976 kW 1 to 9.76 MW
10 MW
10 MW
2002 Dec 02
3
BCcomponents
Product specification
Standard metal film resistors
FUNCTIONAL DESCRIPTION Product characterization
SFR16S/25/25H
Standard values of nominal resistance are taken from the E24 series for resistors with a tolerance of 5%. The values of the E24 series are in accordance with "IEC publication 60 063". Limiting values TYPE SFR16S SFR25 SFR25H Note 1. The maximum voltage that may be continuously applied to the resistor element, see "IEC publication 60 115-1". The maximum permissible hot-spot temperature is 155 C. DERATING The power that the resistor can dissipate depends on the operating temperature; see Fig.1. LIMITING VOLTAGE(1) (V) 200 250 350 LIMITING POWER (W) 0.5 0.4 0.5
100 Pmax (%Prated ) 75
MLB650
50
25
R
1 M
0 40 60 70 80 100 120 140 o Tamb ( C) 155
Fig.1 Maximum dissipation (Pmax) in percentage of rated power as a function of the ambient temperature (Tamb).
2002 Dec 02
4
BCcomponents
Product specification
Standard metal film resistors
PULSE LOADING CAPABILITIES
SFR16S/25/25H
10
3
MEA685 - 1
P max (W) 10 2 t p /t i = 1000 500 200 100 50 20 10 5 1 2
10
10 -1 10 -6
SFR16S
10 -5
10 -4
10 -3
10 -2
10 -1
t i (s)
1
Fig.2
Pulse on a regular basis; maximum permissible peak pulse power ( Pmax) as a function of pulse duration (ti).
MEA689
600 Vmax (V) 500
400
300
200
100
0 10 6
SFR16S
10 5
10 4
10 3
10 2
10 1
t i (s)
1
Fig.3
Pulse on a regular basis; maximum permissible peak pulse voltage ( Vmax) as a function of pulse duration (ti). 5
2002 Dec 02
BCcomponents
Product specification
Standard metal film resistors
SFR16S/25/25H
10 Pmax (W)
3
MLB389
10 2 t p /t i = 1000 500 200 100 50 20 10 5 1 2
10
10 1 10 6
SFR25
10 5
10 4
10 3
10 2
10 1
t i (s)
1
Fig.4
Pulse on a regular basis; maximum permissible peak pulse power ( Pmax) as a function of pulse duration (ti).
600 V max (V) 500
MEA678
400
300
200
100
0 10 6
SFR25
10 5
10 4
10 3
10 2
10 1
t i (s)
1
Fig.5
Pulse on a regular basis; maximum permissible peak pulse voltage ( Vmax) as a function of pulse duration (ti). 6
2002 Dec 02
BCcomponents
Product specification
Standard metal film resistors
SFR16S/25/25H
10 Pmax (W)
3
MLB653
10 2
t p /t i = 1000 500 200 100 50
10
20 10 5
1
2
10 1 10 6
SFR25H
10 5
10 4
10 3
10 2
10 1
t i (s)
1
Fig.6
Pulse on a regular basis; maximum permissible peak pulse power ( Pmax) as a function of pulse duration (ti).
JWB289
handbook, full pagewidth
1200
Vmax (V)
800
400
0 10 6
SFR25H
10 5
10 4
10 3
10 2
10 1
t i (s)
1
Fig.7
Pulse on a regular basis; maximum permissible peak pulse voltage ( Vmax) as a function of pulse duration (ti). 7
2002 Dec 02
BCcomponents
Product specification
Standard metal film resistors
Application information
SFR16S/25/25H
MEA591
MLB652
100 T (K) 80 SFR25
100
T (K)
60
SFR25H
50
40
20
0 0 0.2 0.4 0.6 P (W) 0.8
0 0 0.1 0.2 0.3 0.4 P (W) 0.5
SFR16S
SFR25/SFR25H
Fig.8
Hot-spot temperature rise (DT) as a function of dissipated power.
Fig.9
Hot-spot temperature rise (DT) as a function of dissipated power.
2002 Dec 02
8
BCcomponents
Product specification
Standard metal film resistors
MECHANICAL DATA Mass per 100 units TYPE SFR16S SFR25 SFR25H Marking MASS (g) 11.5 21.0 22.0
L1
SFR16S/25/25H
d
CCB414
The nominal resistance and tolerance are marked on the resistor using four or five coloured bands in accordance with IEC publication 60 062 "Colour codes for fixed resistors". Outlines The length of the body (L1) is measured by inserting the leads into holes of two identical gauge plates and moving these plates parallel to each other until the resistor body is clamped without deformation ("IEC publication 60 294"). Table 4
For dimensions see Table 4.
D L2
Fig.10 Outline.
Resistor type and relevant physical dimensions; see Fig.10 TYPE
AED MAX. (mm)
1.9 2.5 2.5
L1 MAX. (mm)
L2 MAX. (mm) 3.4 7.0 7.0
AEd (mm)
0.45 0.05 0.58 0.05 0.58 0.05
SFR16S SFR25 SFR25H
6.5 6.5
2002 Dec 02
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TESTS AND REQUIREMENTS Essentially all tests are carried out in accordance with the schedule of "IEC publication 60 115-1", category 55/155/56 (rated temperature range -55 C to +155 C; damp heat, long term, 56 days). The testing also covers the requirements specified by EIA and EIAJ. The tests are carried out in accordance with IEC publication 6 0068-2, "Recommended basic climatic and mechanical robustness testing procedure for electronic components" and under standard atmospheric conditions according to "IEC 60 068-1", subclause 5.3. Table 5 Test procedures and requirements IEC 60 068-2 TEST METHOD 21 (U) 21 (Ua1) 21 (Ub)
In Table 5 the tests and requirements are listed with reference to the relevant clauses of "IEC publications 60 115-1 and 60 068-2" ; a short description of the test procedure is also given. In some instances deviations from the IEC recommendations were necessary for our method of specifying.
2002 Dec 02 10
BCcomponents
Standard metal film resistors
IEC 60 115-1 CLAUSE 4.16 4.16.2 4.16.3
REQUIREMENTS TEST PROCEDURE RESISTANCE RANGE SFR16S SFR25 SFR25H
robustness of terminations: tensile all samples AE0.45 mm, load 5 N; 10 s number of failures <10 10-6 number of failures <10 10-6
AE0.58 mm, load 10 N; 10 s
bending half number of samples torsion other half of samples solderability resistance to soldering heat rapid change of temperature bump vibration
AE0.45 mm, load 2.5 N; 4 90 AE0.58 mm, load 5 N; 4 90
3 360 in opposite directions 2 s; 235 C; flux 600 3.5 s; 350 C; solder bath method 30 minutes at -55 C and 30 minutes at +155 C; 5 cycles 3 1 500 bumps in 3 directions; 40 g frequency 10 to 500 Hz; displacement 1.5 mm or acceleration 10 g; 3 directions; total 6 hours (3 2 hours)
4.16.4 4.17 4.18 4.19 4.20 4.22
21 (Uc) 20 (Ta) 20 (Tb) 14 (Na) 29 (Eb) 6 (Fc)
no damage DR/R max.: 0.25% + 0.05 W good tinning; no damage
DR/R max.: 0.25% + 0.05 W DR/R max.: 0.25% + 0.05 W
no damage DR/R max.: 0.25% + 0.05 W no damage DR/R max.: 0.25% + 0.05 W
SFR16S/25/25H
Product specification
2002 Dec 02 11
BCcomponents
IEC 60 115-1 CLAUSE 4.23 4.23.2 4.23.3
IEC 60 068-2 TEST METHOD 2 (Ba) 30 (Db)
REQUIREMENTS TEST PROCEDURE RESISTANCE RANGE SFR16S SFR25 Rins min.: 1 000 MW 16 hours; 155 C 24 hours; 55 C; 90 to 100% RH SFR25H
Standard metal film resistors
climatic sequence: dry heat damp heat (accelerated) 1st cycle cold low air pressure damp heat (accelerated) remaining cycles damp heat (steady state) endurance
4.23.4 4.23.5 4.23.6
1 (Aa) 13 (M) 30 (Db)
2 hours; -55 C 2 hours; 8.5 kPa; 15 to 35 C 5 days; 55 C; 95 to 100% RH R 1 MW R > 1 MW 56 days; 40 C; 90 to 95% RH; dissipation 0.01 Pn 1 000 hours at 70 C; Pn or Vmax between -55 C and +155 C (TC 10-6/K) R 1 MW R > 1 MW R < 4.7 W R 100 kW R 1 MW R > 1 MW
DR/R max.: 1% + 0.05 W DR/R max.: 1% + 0.05 W DR/R max.: 2% + 0.1 W
4.24.2 4.25.1
3 (Ca)
Rins min.: 1 000 MW DR/R max.: 1% + 0.05 W
DR/R max.: 1% + 0.05 W DR/R max.: 1% + 0.05 W 250 100 250 250 100 100 100 250
no breakdown
DR/R max.: 2% + 0.1 W 100 100 100 250
4.8.4
temperature coefficient
4.7
voltage proof on insulation
400 V (RMS) (SFR16S) or 600 V (RMS) (SFR25 and SFR25H); during 1 minute; V-block method "IEC publication 60 195" R < 68 kW R 100 kW R 1 MW R > 1 MW max. 0.1 mV/V max. 0.5 mV/V max. 1.5 mV/V max. 1.5 mV/V
4.12
noise
max. 0.1 mV/V max. 0.1 mV/V max. 0.1 mV/V max. 1.5 mV/V Rins min.: 1 000 MW
max. 0.1 mV/V max. 0.1 mV/V max. 0.1 mV/V max. 1.5 mV/V
SFR16S/25/25H
Product specification
4.6.1.1
insulation resistance 500 V (DC) during 1 minute; V-block method
2002 Dec 02 12
BCcomponents
IEC 60 115-1 CLAUSE 4.13
IEC 60 068-2 TEST METHOD
REQUIREMENTS TEST PROCEDURE room temperature; P = 6.25 Pn (SFR25) or 6.25 0.25 W (SFR16S); 5 s on, 45 s off (V 2 Vmax); 10 cycles 16 0.16 W; 1 s on and 25 s off; 10 000 200 cycles; Vmax = 600 V RESISTANCE RANGE SFR16S SFR25 SFR25H
Standard metal film resistors
short time overload
DR/R max.: 0.25% + 0.05 W
DR/R max.: 1% + 0.05 W
intermittent overload in accordance with "JIS-C5202 5.8" see 2nd amendment to "IEC 60 115-1", Jan. '87 pulse load
DR/R max.: 0.75% + 0.05 W
-
-
see Figs 2, 3, 4, 5, 6 and 7
SFR16S/25/25H
Product specification

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