01 passive

Passive Electronic Components

©Monzur Kabir of 151


Physical Appearance

Slide 3 Slide 8 Slide 12

Units Ohm () Farad (F) Henry (H)

Other Specifications

• Maximum Power (Watt)

• Tolerance (%)

• Maximum Voltage (Volt)

• Tolerance (%)

• Maximum Current (A)

• Tolerance (%)

Code • Colour (Slide 5)

• Numeric Code and Direct Value (Slide 6)

Slide 10 Slide 14

Standard Values Slide 7 Slide 11

Typical Values Few ohms

to

tens of Mega-ohm

Few pico-Farad

to

tens of micro-Farad

Few nano-Henry to

tens of milli-Henry

Resistor Capacitor Inductor



Variable Components


Symbol and Notation

Relationship with voltage and current (Ohm’s Law)

Equivalence of Series/parallel combination


Passive Electronic Components (Continued)

Resistor Capacitor Inductor

dt

dvCi

dt

diLv Riv

Exploring More: http://training.ipc.org/demos/pdf/drm18g.pdf and http://www.kpsec.freeuk.com/solder.htm



Resistor Examples

http://www.wordiq.com/definition/Resistor

(Larger size often indicates higher power rating)

Through-hole Resistors

SMT Components

Source: Basic Electronics, Bernard Grob



Resistor Examples

SMT Rectangular passive components (mostly resistors and capacitors):

01005 (0402 metric) : 0.016" × 0.008" (0.4 mm × 0.2 mm) Typical power rating for resistors 1/32 Watt




0805 (2012 metric) : 0.08" × 0.05" (2.0 mm × 1.25 mm) Typical power rating for resistors 1/10 or 1/8 Watt


1806 (4516 metric) : 0.177" × 0.063" (4.5 mm × 1.6 mm) 1812 (4532 metric) : 0.18" × 0.12" (4.5 mm × 3.2 mm)

Typical power rating for resistors 1/2 Watt 2010 (5025 metric) : 0.2" × 0.1" (5.0 mm × 2.5 mm) 2512 (6332 metric) : 0.25" × 0.12" (6.35 mm × 3.0 mm)

Ref: http://en.wikipedia.org/wiki/Surface-mount_technology



Variable Resistor Examples



Resistor Color Code

http://www.oilfield.de/download/techtabs/electron/ccode001.pdf

On line Tool: http://www.samengstrom.com/nxl/3660/4_band_resistor_color_code_page.en.html

Note: A resistor with a single black-band is a zero ohm resistor



Resistor Code

SIL (Single In-Line) network:• The 4 and 7 are significant digits and the 3 is the decade, giving 47 x 1000 or 47 K• The letter after the numbers is the tolerance. The different representations are:

M=±20%, K=±10%, J=±5%, G=±2%, F=±1%. • Detail Spec: http://www.vishay.com/docs/31509/csc.pdf

SMD (Surface Mount Device):• The 1 and 0 are significant digits and the 3 is the decade, giving 10 x 1000 or 10 K

Ref: http://www.lalena.com/audio/electronics/color/

Direct Value:• Resistors with larger physical size are often printed the value directly on their body



Standard Resistor Values

Electronic Industries Association (EIA) standard E24:

Standard E24 specifies resistors based on 5% tolerance (often resistor of this category has 2% tolerance now a days due to advancement of manufacturing techniques)

100 110 120 130 150 160 180 200

220 240 270 300 330 360 390 430

470 510 560 620 680 750 820 910

Standard Resistor values =

× 10M Ohms

(Where M can be any integer, positive or negative)

For other standards: http://www.logwell.com/tech/components/resistor_values.html



Capacitor Examples

http://www.wordiq.com/definition/Image:Condensators.JPG

Source: Basic Electronics, Bernard Grob

Through-HoleSMT Chip

Capacitor Network



Variable Capacitor Examples



Capacitor Alphanumeric Code

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Col

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4R7 = 4.7 F 4N7 = 4.7 nF 4P7 = 4.7 pF

or r

http

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ma

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Standard Capacitor Values

Ref: http://www.aoc.nrao.edu/~pharden/ref/_caps.pdf



Inductor Examples

http://www.wordiq.com/definition/Inductor

Wire-wound Inductors Wire-wound Inductors

Ferrite drum wire-wound http://www.epcos.com/inf/30/db/emc_00/01810183.pdf

For More:http://www.cambion.co.uk/Main/catalogue_inductive.htm

SMT



Variable Inductor Example

http://www.standexelectronics.com/ser308a.htm

http://www.cambion.co.uk/Main/coilform-shielded.htm



Inductor Code

Inductor Alphanumeric code (Similar to capacitor code):

http://www.elexp.com/t_induct.htm



Series and Parallel Combinations

01 passive

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