PRECISION AXIAL WIREWOUND RESISTOR PAC

Transcription

1 PRECISION AXIAL WIREWOUND RESISTOR FEATURES Excellent stability and reliabitity characteristics; Low temperature coefficient; High pulse load handling capabilities; High power dissipation in small volume; Different forming style available under request; High temperature coating. MARKET SEGMENTS AND APPLICATIONS Market Segment Industrial Telecom Consumer Sound & Vision DAP Lighting Aumotive Application Power supplies Mor speed controls Line protection resisr Power supplies Audio Edirs Systems High end hi-fi Kitchen appliances White good Ballast equipment Dashboard electronics Electronic fuel injection TECHNOLOGY The resisr element is a resistive wire which is wound in a single layer on a ceramic rod. Metal caps are pressed over the ends of the rod. The ends of the resistance wire and the tinned copper leads or copper-clad iron leads are connected the caps by welding. The resisr is coated with a green silicon cement which is non-flammable, will not drip even at high overloads and is resistant most commonly used cleaning solvents, in accordance with MIL-STD-202, method 215 and IEC The standard resisr is supplier with axial lead taped in a box or with formed leads as a special type. page 1 of 11

2 QUICK REFERENCE DATA DESCRIPTION Rated dissipation at T amb =25 C 1W 2W 3W 4W 5W 6W Resistance range ( note 1) Resistance lerance (note 2) Maximum permissive body temperature 0.Ω 2.2KΩ 0.Ω 0.Ω 0.Ω 0.Ω 3.6KΩ 4.7KΩ 8.2KΩ KΩ ±1%; E24 and E96 series 275ºC Limiting Voltage V = Pn x R Climatic category (IEC ) 55/200/56 Basic specification IEC ; IEC ; MIL-R-26 Temperature coefficient (Note 3) < ± 0 ppm / ºC (note 2) 0.Ω 12KΩ Stability after: load, 00 hours R/R max.: ±0.5% Ω climatic tests R/R max.: ±0.5% Ω short time overload R/R max.: ±0.2% Ω Special product modifications available on request Note 1 Special resistives values Note 2 Tolerances.: 0.5%, 3%, 5% Note 3 Temperature coefficient ( ppm/ºc).: 20 / 30 / 50 / 90 Note 4 Terminal lenghts and diameters Terminal with special configuration cropped and formed, double kink, stand-up Note 5 version etc... Application information available on request 1 -Temperature rise of the resisr body (hot spot) as a function of dissipation 2 -Temperature rise at the end of the lead (solder spot) as a function of lead lenght and the power dissipation 3 - Pulse load be behaviour 4 - High frequency behaviour (self inductance) page 2 of 11

3 MECHANICAL DATA TYPE L max. D max. C D B1-B2 A ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) Dimensions in mm ( inches ). 32 ( ) 30 ( ) 28 ( 1.2 ) 28 ( 1.2 ) 28 ( 1.2 ) 28 ( 1.2 ) 0.8 ± 0.03 ( ± ) 63 ± 1 ( ± ) 63 ± 1 ( ± ) 63 ± 1 ( ± ) 63 ± 1 ( ± ) 71 ± 1 ( ± ) 71 ± 1 ( ± ) page 3 of 11

4 FORMED LEADS STYLE (special product) Stand-up type Kink type S Double kink type The dimensions for leads forming be define as a function of specific application ELECTRICAL CHARACTERISTICS DERATING The power that the resisr can dissipates depends on the operating temperature; see bellow. P.max (%) T.amb (ºC) page 4 of 11

5 PULSE LOAD CAPABILITIES How interpret the maximum allowed pulse load from the graphs see details and definitions on general introduction Repetitive pulse 3 tp/ti=00 0.1Ω 1Ω 2 1 tp/ti= 0Ω 2.2ΚΩ Repetitive Pulse 3 2 tp/ti=00 tp/ti= 0Ω 3.6ΚΩ 0.1Ω 1Ω Ω page 5 of 11

6 4 03 Repetitive Pulse tp/ti=00 0.1Ω 3 2 tp/ti= 0Ω 4.7ΚΩ 1Ω Ω tp/ti=00 04 Repetitive Pulse 0.1Ω 3 1Ω 2 tp/ti= 0Ω 8.2ΚΩ page 6 of 11

7 5 05 Repetitive Pulse 4 tp/ti= Ω 3 2 tp/ti= 0Ω 12ΚΩ Repetitive Pulse 4 tp/ti= Ω 3 2 tp/ti= 15ΚΩ 0Ω page 7 of 11

8 MARKING The resisr is marked with the resisr type designation, the rated dissipation at 25 C, nominal resistance value ( the R for values Ω and K for values KΩ is used as decimal point), the lerance on the resistance and the production date (week and year) Example: Ω - year 2001=1 week R ORDERING CODE The resisrs have a 12-digit ordering code for indicate the resisr type and resistive value X X X X X OHMIC VALUE PRODUCT NUMBER TYPE W 1% W 1% W 1% W 1% W 1% RESISTANC E DECADE LAST DIGIT Ω Ω Ω Ω kΩ 2 12kΩ 3 Ordering example: The ordering code for 02 resisr, value 47Ω, 1%, is NAFTA ORDERING INFORMATION CROSS REFERENCE NAFTA ORDERING CODES The resisr have on ordering code with 12 digits, first 5 digits for product type and the subsequent digits indicate the resistance value and lerance. Type Resitance Tol. Nafta part SPQ 12NC range % number (1) units Ω 2.2 KΩ ± xxxx 01DxxxxxF 00; ammopack Ω 3.65 KΩ ± xxxx 02DxxxxxF 500; ammopack Ω 4.7 KΩ ± xxxx 03DxxxxxF 500; ammopack Ω 8.25 KΩ ± xxxx 04DxxxxxF 500; ammopack Ω KΩ ± xxxx 05DxxxxxF 500; ammopack Ω 12 KΩ ± xxxx 06DxxxxxF 500; ammopack page 8 of 11

9 COMPOSITION OF OHMIC VALUE The ohmic value is represented by 5 digits. Value 5 Digits (All Other) 1 Ω 1R000 Ω R00 0 Ω 0R0 1 KΩ 1K000 KΩ K00 0 KΩ 0K0 1 MΩ 1M000 Ordering example The nafta part number for 02 47Ω, 1% is 02D47R00F. KAGING Axial resisr (tapped in box) Type Quantity M N P Dimensions in mm (Inches) 85 ( ) 85 ( ) 85 ( ) 85 ( ) 93 ( ) 93 ( ) 65 ( ) 65 ( ) 65 ( ) 112 ( ) 115 ( ) 115 ( ) 263 (.354 ) 263 (.354 ) 263 (.354 ) 273 (.748 ) 273 (.748 ) 273 (.748 ) page 9 of 11

10 Axial resisr (taped in reel) Type Quantity TESTS AND REQUIREMENTS Essentially all tests and requirements present in table bellow follow the schedule of IEC standard, publication , and IEC CLAUSE IEC TEST METHOD 4.15 Robustness of resisr body U Ua Ub Uc TEST PROCEDURE REQUIREMENTS Robustness of terminations: Tensile all samples Bending half number of samples Torsion other half number of samples load 200 ± N Load N; s Load 5N; 90º, 180º, 90º 2 x 180 o in opposite directions. no visible damage ±0.1%+ 0.05Ω No visible damage ±0.1%+ 0.05Ω Ta Solderability 2s; 235ºC; flux600 Good tinning, no visible damage Tb Resistance Thermal shock: 3s; 350ºC soldering heat 2.5 mm from body. ±0.2%+0.05Ω 14(Na) Rapid change of temperature 0.5h 55 o C 0.5h o C 5 cycles no visible damage ±0.5%+0.05Ω page of 11

11 IEC CLAUSE IEC TEST METHOD Fc Vibration frequency 500 Hz, displacement 0.75mm or acceleration g, three directions; tal 6h (3x2h) Climatic sequence Ba Db Dry heat TEST PROCEDURE REQUIREMENTS Damp heat (accelerated) 1st cycle 16h, 200 o C 24h; 55 o C; 95-0% R.H. no visible damage ±0.1% Ω Aa Cold 2h; -55 o C M Low air pressure 1h; 8.5 KPa; o C Db 3(Ca) Damp heat (accelerated) remaining cycles Damp heat (steady state) Temperature coefficient Short time overload 5 days; 55 o C; 95 0% R.H. 56 days; 40 o C; 90-95% R.H. dissipation 0,01Pn At 20/-40/20ºC, 20/200/20ºC: Room temperature; dissipation x Pn; 5s ±0.5% Ω No visible damage ±1% Ω TC< ±0ppm/ºC ±0.2% ± 0.05Ω Endurance (at 25 o C) 00h loaded with Pn 1.5h on and 0.5h off No visible damage ±0.5% Ω (Ba) Endurance at upper category temperature 00 hours; 200ºC; no load No visible damage ±1% Ω page 11 of 11