Standard Metal Film Resistors

SFR6S/25/25H Standard Metal Film Resistors FEATURES Low cost Low noise Small size (SFR6S) 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 SFR6S; light-green for type SFR25 and red-brown for type ) which provides electrical, mechanical and climatic protection. The encapsulation is resistant to all cleaning solvents, in accordance with MIL-STD-22E, method 25, and IEC 668-245. Lead (Pb)-free solder contacts 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 22/95/EC (issue 24) APPLICATIONS General purpose resistors TECHNICAL SPECIFICATIONS DESCRIPTION VALUE SFR6S SFR25 Resistance range ± 5 %; Ω to3mω ± 5 %;.22 Ω to MΩ ± %; ± %; Ω to MΩ 4.99 Ω to 3 MΩ jumper ( Ω) jumper ( Ω) Resistance tolerance Temperature coefficient: ± %, E24/E96 series; ± 5 %, E24 series R<4.7Ω ± 25-6 /K ± -6 /K ± -6 /K 4.7 Ω R kω ± -6 /K ± -6 /K ± -6 /K kω <R MΩ ± 25-6 /K ± -6 /K ± -6 /K R>MΩ ± 25-6 /K ± 25-6 /K ± 25-6 /K Absolute maximum dissipation at T amb = 7 C.5 W.4 W.5 W Thermal resistance, R th 7 K/W 2 K/W 5 K/W Maximum permissible voltage 2 V 25 V 35 V Noise: R<68kΩ max.. µv/v max.. µv/v max.. µv/v 68 kω R kω max..5 µv/v max.. µv/v max.. µv/v kω R MΩ max..5 µv/v max.. µv/v max.. µv/v R>MΩ max..5 µv/v max..5 µv/v max..5 µv/v Basic specifications IEC 65- and 65-2 Climatic category (IEC 668) 55/55/56 Stability, R/R max., after: load: R range ± 2 % +.5 Ω ± 2 % +.5 Ω ± 2 % +.5 Ω climatic tests: R MΩ ± % +.5 Ω ± % +.5 Ω ± % +.5 Ω R>MΩ ± % +.5 Ω ± % +.5 Ω ± 2 % +. Ω Soldering ±.25 % +.5 Ω ±.25 % +.5 Ω ±.25 % +.5 Ω Short time overload ±.25 % +.5 Ω ±.25 % +.5 Ω ± % +.5 Ω www.vishay.com For technical questions contact: ff3dresistors@vishay.com Document Number: 28722 32 Revision: 8-Dec-5

Standard Metal Film Resistors SFR6S/25/25H 2NC INFORMATION The resistors have a 2-digit numeric code starting with 23. The subsequent 6 or 7 digits indicate the resistor type and packing. The remaining digits indicate the resistance value: The first 3 digits for % or 2 digits for 5 % indicate the resistance value. The last digit indicates the resistance decade. Last Digit of 2NC for ± 5 % Tolerance RESISTANCE DECADE LAST DIGIT. to.9 Ω 7 to9.ω 8 to 9 Ω 9 to 9 Ω to9.kω 2 to 9 kω 3 to 9 kω 4 to9.mω 5 MΩ 6 Last Digit of 2NC for ± % Tolerance RESISTANCE DECADE LAST DIGIT to9.76ω 8 to 97.6 Ω 9 to 976 Ω to9.76kω 2 to 97.6 kω 3 to 976 kω 4 to9.76mω 5 MΩ 6 2NC Example The 2NC of a SFR25 resistor, value 56 Ω ± 5 %, taped on a bandolier of 5 units in ammopack is: 2322 8 43562. 2NC - resistor type and packing TYPE TOL. ORDERING CODE 23........ BANDOLIER IN AMMOPACK BANDOLIER ON REEL RADIAL TAPED STRAIGHT LEADS STRAIGHT LEADS 4 units units 5 units 5 units SFR6S ± 5 %..22 87 73.....22 87 53.....6 87 23... ± %..6 87 3.....6 87... jumper )..6 87 93..22 87 9346 SFR25 ± 5 %..6 84 3.....22 8 53.....22 8 43.....22 8 63... ± %..22 88 2.....6 8 8... jumper 2)..22 8 98..22 8 99..6 8 9 ± 5 %..22 86 6.....22 86 76.....6 86 63... ± %..22 86 3.....6 86 8.... The jumper has a maximum resistance R max = 3 mω at 3 A (SFR6S). 2. The jumper has a maximum resistance R max = mω at 5 A (SFR25). PART NUMBER PART NUMBER: SFR25FA5 S F R 2 5 F A 5 MODEL/SIZE SPECIAL CHARACTER TC/MATERIAL VALUE TOLERANCE PACKING ) SPECIAL SFR6S SFR25 = neutral Z = value overflow (Special) = standard Z = jumper 3 digit value digit multiplier Multiplier: 7 = * -3 8 = * -2 9 = * - = * = * 2 = * 2 3 = * 3 4 = * 4 5 = * 5 F = ± % J = ± 5 % Z = jumper PRODUCT DESCRIPTION: SFR25 % A5 K SFR25 % A5 K MODEL/SIZE TOLERANCE PACKING ) RESISTANCE VALUE SFR6S SFR25 ± % ± 5 % A A5 47K = 47 KΩ 5R = 5. Ω ) Please refer to table PACKING. Note Products can be ordered using either the 2NC or the PART NUMBER. The PART NUMBER is shown to facilitate the introduction of a unified part numbering system. Currently, this PART NUMBER is applicable in the Americas only. Document Number: 28722 For technical questions contact: ff3dresistors@vishay.com www.vishay.com Revision: 8-Dec-5 33 N4 A5 A R5 The 2 digits are used for all special parts. = standard

SFR6S/25/25H Standard Metal Film Resistors PACKING CODE PIECES DESCRIPTION MODEL/SIZE N4 4 Bandolier in ammopack radial taped SFR25 A5 5 Bandolier in ammopack straight leads A Bandolier in ammopack straight leads R5 5 Bandolier on reel straight leads SFR6S, SFR25, SFR6S, SFR25, SFR6S, SFR25, DIMENSIONS L DIMENSIONS - resistor types and relevant physical dimensions in millimeters L 2 Ø D Outline. Ø d TYPE D MAX. L MAX. L 2 MAX. SFR6S.9 3.5 4..45 ±.5 SFR25 2.5 6.5 7.5.58 ±.5 2.5 6.5 7.5.58 ±.5 d MASS PER UNITS TYPE MASS (g) SFR6S.2 SFR25 2.5 2.5 MARKING The nominal resistance and tolerance are marked on the resistor using four or five coloured bands in accordance with IEC publication 662 Color codes for fixed resistors. OUTLINES The length of the body (L ) 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 6294 ). FUNCTIONAL PERFORMANCE PRODUCT CHARACTERIZATION Standard values of nominal resistance are taken from the E96/E24 series for resistors with a tolerance of ± % or ± 5 %. The values of the E96/E24 series are in accordance with IEC publication 663. LIMITING VALUES TYPE LIMITING VOLTAGE ) (V) Note. The maximum voltage that may be continuously applied to the resistor element, see IEC publication 65-. The maximum permissible hot-spot temperature is 55 C. LIMITING POWER (W) SFR6S 2.5 SFR25 25.4 35.5 www.vishay.com For technical questions contact: ff3dresistors@vishay.com Document Number: 28722 34 Revision: 8-Dec-5

Standard Metal Film Resistors SFR6S/25/25H The power that the resistor can dissipate depends on the operating temperature P max (%P rated ) 5 R > MΩ Derating - 55 5 7 55 T amb ( C) Maximum dissipation (P max ) in percentage of rated power as a function of the ambient temperature (T amb ). 3 P max (W) 2 t p/t i = 5 2 5 2 5 2 - -6-5 -4-3 -2 - t i (s) SFR6S Pulse on a regular basis; maximum permissible peak pulse power ( Pmax) as a function of pulse duration (t i ) 6 V max (V) 5 4 3 2-6 -5-4 -3-2 - t i (s) SFR6S Pulse on a regular basis; maximum permissible peak pulse voltage ( Vmax) as a function of pulse duration (t i ) Document Number: 28722 For technical questions contact: ff3dresistors@vishay.com www.vishay.com Revision: 8-Dec-5 35

SFR6S/25/25H Standard Metal Film Resistors 3 P max (W) 2 t p /t i = 5 2 5 2 5 2 - -6-5 -4-3 -2 - t i (s) SFR25 Pulse on a regular basis; maximum permissible peak pulse power ( Pmax) as a function of pulse duration (t i ) Pulse Loading Capabilities 6 V max (V) 5 4 3 2-6 -5-4 -3-2 - t i (s) SFR25 Pulse on a regular basis; maximum permissible peak pulse voltage ( Vmax) as a function of pulse duration (t i ) 3 P max (W) 2 t p /t i = 5 2 5 2 5 2 - -6-5 -4-3 -2 - t i (s) Pulse on a regular basis; maximum permissible peak pulse power ( Pmax) as a function of pulse duration (t i ) www.vishay.com For technical questions contact: ff3dresistors@vishay.com Document Number: 28722 36 Revision: 8-Dec-5

Standard Metal Film Resistors SFR6S/25/25H 2 handbook, full pagewidth V max (V) 8 4-6 -5-4 -3-2 - t i (s) Pulse on a regular basis; maximum permissible peak pulse voltage ( Vmax) as a function of pulse duration (t i ) Pulse Loading Capabilities T (K) 5.2.4.6.8 P (W) SFR6S Hot-spot temperature rise ( T) as a function of dissipated power T (K) 8 SFR25 6 4 2 Application Information..2.3.4.5 P (W) SFR25/ Hot-spot temperature rise ( T) as a function of dissipated power Document Number: 28722 For technical questions contact: ff3dresistors@vishay.com www.vishay.com Revision: 8-Dec-5 37

SFR6S/25/25H Standard Metal Film Resistors TESTS AND REQUIREMENTS Essentially all tests are carried out in accordance with the schedule of IEC publication 65-, category 55/55/56 (rated temperature range - 55 C to + 55 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 668-2, Recommended basic climatic and mechanical robustness testing procedure for electronic components and under standard atmospheric conditions according to IEC 668-, subclause 5.3. In the Test Procedures and Requirements table the tests and requirements are listed with reference to the relevant clauses of IEC publications 65- and 668-2 ; 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. TEST PROCEDURES AND REQUIREMENTS IEC 65- CLAUSE IEC 668-2 TEST METHOD TEST 4.6 2 (U) robustness of terminations: PROCEDURE RESISTANCE RANGE REQUIREMENTS SFR6S SFR25 4.6.2 2 (Ua) tensile all samples.45 mm, load 5 N; s number of failures < -6.58 mm, load N; s 4.6.3 2 (Ub) bending half number of samples 4.6.4 2 (Uc) torsion other half of samples.45 mm, load 2.5 N; 4 9.58 mm, load 5 N; 4 9 3 36 in opposite directions number of failures < -6 no damage R/R max.: ±.25 % +.5 Ω 4.7 2 (Ta) solderability 2 s; 235 C; flux 6 good tinning; no damage 4.8 2 (Tb) resistance to soldering heat 4.9 4 (Na) rapid change of temperature 3.5 s; 35 C; solder bath method 3 minutes at - 55 C and 3 minutes at + 55 C; 5 cycles 4.2 29 (Eb) bump 3 5 bumps in 3 directions; 4 g 4.22 6 (Fc) vibration frequency to 5 Hz; displacement.5 mm or acceleration g; 3 directions; total 6 hours (3 2 hours) R/R max.: ±.25 % +.5 Ω R/R max.: ±.25 % +.5 Ω no damage R/R max.: ±.25 % +.5 Ω no damage R/R max.:±.25 % +.5 Ω 4.23 climatic sequence: R ins min.: MΩ 4.23.2 2 (Ba) dry heat 6 hours; 55 C 4.23.3 3 (Db) damp heat (accelerated) st cycle 24 hours; 55 C; 9 to % RH 4.23.4 (Aa) cold 2 hours; - 55 C 4.23.5 3 (M) low air pressure 2 hours; 8.5 kpa; 5 to 35 C 4.23.6 3 (Db) damp heat (accelerated) remaining cycles 5 days; 55 C; 95 to % RH 4.24.2 3 (Ca) damp heat (steady state) 56 days; 4 C; 9 to 95 % RH; dissipation. P n R MΩ R/R max.: ± % +.5 Ω R > MΩ R/R max.: ± % +.5 Ω R/R max. ± 2 % +. Ω R ins min.: MΩ R/R max.: ± 2 % +.5 Ω www.vishay.com For technical questions contact: ff3dresistors@vishay.com Document Number: 28722 38 Revision: 8-Dec-5

Standard Metal Film Resistors SFR6S/25/25H TEST PROCEDURES AND REQUIREMENTS IEC 65- CLAUSE IEC 668-2 TEST METHOD TEST 4.25. endurance hours at 7 C; P n or V max 4.8.4 temperature coefficient 4.7 voltage proof on insulation PROCEDURE between - 55 C and + 55 C (TC -6 /K) 4 V (RMS) (SFR6S) or 6 V (RMS) (SFR25 and ); during minute; V-block method RESISTANCE RANGE REQUIREMENTS SFR6S SFR25 R/R max.: ± 2 % +.5 Ω R < 4.7 Ω ± 25 ± ± R kω ± ± ± R MΩ ± 25 ± ± R > MΩ ± 25 ± 25 ± 25 no breakdown 4.2 noise IEC publication 695 R < 68 kω max.. µv/v max.. µv/v max.. µv/v R kω max..5 µv/v max.. µv/v max.. µv/v R MΩ max..5 µv/v max.. µv/v max.. µv/v R > MΩ max..5 µv/v max..5 µv/v max..5 µv/v 4.6.. insulation 5 V (DC) during minute; R ins min.: MΩ resistance V-block method 4.3 short time room temperature; R/R max.: ±.25 % +.5 Ω R/R max.: overload P = 6.25 P n (SFR25) or ± % +.5 Ω 6.25.25 W (SFR6S); 5 s on, 45 s off (V 2 V max ); cycles intermittent 6.6 W; s on and 25 s R/R max.: overload in off; ± 2 cycles; ±.75 accordance with V max =6V %+.5Ω JIS-C522 5.8 see 2 nd amendment to IEC 65-, Jan. 87 pulse load see Pulse Loading Capabilities graphs Document Number: 28722 For technical questions contact: ff3dresistors@vishay.com www.vishay.com Revision: 8-Dec-5 39

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