Passive Components

A passive component is a module that does not require energy to operate, except for the available alternating current (AC) circuit that it is connected to. A passive module is not capable of power gain and is not a source of energy. A typical passive component would include resistors, inductors, capacitors and transformers, which together are required to build any electrical or electronic circuit.

Passive devices can be used individually or connected together within a circuit, either in a series or in a parallel combination to control complex circuits or signals.

Types of Passive Components

Capacitors

A capacitor is a passive component that can gather and hold a charge in a way that is similar to how a battery functions. This type of passive component is made of 2 close conductors (usually plates) that are separated by a dielectric material. The plates accumulate electric charge when connected to a power source. One plate accumulates a positive charge and the other plate accumulates a negative charge. It can hold the charge even when the voltage is no longer applied. Different types of capacitors are film capacitors, mica capacitors, ceramic capacitors, electrolytic capacitors, aluminium electrolytic capacitors, tantalum electrolytic capacitors and power factor correction capacitors.

Resistors

Another type of passive component is the resistor. A Resistor is an electrical device that resists the flow of electrical current. Although a resistor does not amplify or shape the electric current in any way, it's a powerful little device as it enables you to put the brakes on current flow in a very controlled way.

Inductors

An inductor is a passive component that can store or deliver energy but cannot generate it. An ideal inductor is lossless, meaning that it can store energy indefinitely as no energy is lost as heat. Inductors are sometimes known as coils, chokes, electromagnets and solenoids.

Ferrite Cores

A ferrite core is a ceramic compound that includes a mix of iron and another type of metal. Ferrite is common in many types of electrical components, including antennas. This magnetic core features wound components; some examples would include windings from a transformer and inductors. It is useful because of its low electrical conductivity and high magnetic permeability.

Surge Protection Components

Surge protectors are a part of nearly every home and office today. They provide your expensive electronic equipment and circuitry with added protection against the harmful effects of electricity surges, improving their longevity.

RS is a supplier of passive components with a wide variety of quality products from leading manufacturers across the world.

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161078 Products showing for Passive Components

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Bourns, H-815, Surface 18 Resistor Kit 9, 10 Ω → 2 MΩ
  • RS Stock No. 768-1959
  • Mfr. Part No. H-815
Subtotal (1 unit)
SGD55.38(exc. GST)
SGD55.38/unit
Temporarily out of stock
TE Connectivity HSC100100RJ, 100 Ω 100 W Wirewound Chassis Mount Resistor ±5 %
  • RS Stock No. 720-5369
  • Mfr. Part No. HSC100100RJ
Subtotal (1 unit)
SGD30.18(exc. GST)
SGD30.18/unit
Last RS stock
Arcol Ohmite L50J20KE, 20 kΩ 50 W Wirewound Chassis Mount Resistor ±5 %
  • RS Stock No. 892-5219
  • Mfr. Part No. L50J20KE
Subtotal (1 unit)
SGD18.56(exc. GST)
SGD18.56/unit
In Stock
Vishay 1000 μF Capacitor 16V dc, Through Hole - MAL215055102E3 Solder
  • RS Stock No. 447-838
  • Mfr. Part No. MAL215055102E3
Subtotal (1 pack of 5 units)
SGD11.73(exc. GST)
SGD2.346/unit
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Panasonic 1000 μF Capacitor 10V dc, Through Hole - EEUFM1A102L Radial Lead
  • RS Stock No. 526-1115
  • Mfr. Part No. EEUFM1A102L
Subtotal (1 pack of 5 units)
SGD4.67(exc. GST)
SGD0.934/unit
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RS PRO Omni-Directional, Through Hole 4 mm Microphone Condenser -44dB
  • RS Stock No. 780-0725P
Subtotal 5 units (supplied in a tray)
SGD10.00(exc. GST)
SGD2.00/unit
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KEMET 3300 μF Capacitor 450V dc, Screw - ALS30A332NP450
  • RS Stock No. 173-2034
  • Mfr. Part No. ALS30A332NP450
Subtotal (1 bag of 12 units)
SGD1,260.228(exc. GST)
SGD105.019/unit
In Stock
WIMA MKS2 Film Capacitor 10 nF 63V ac 100 V dc, Through Hole
  • RS Stock No. 108-2643
  • Mfr. Part No. MKS2D021001A00KSSD
Subtotal (1 pack of 5 units)
SGD3.80(exc. GST)
SGD0.76/unit
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TDK Thermistor, NTC Type 7 Ω 31 mm 31 mm 7 mm
  • RS Stock No. 173-1181
  • Mfr. Part No. B57127P0709M301
Subtotal (1 bag of 200 units)
SGD571.40(exc. GST)
SGD2.857/unit
In Stock
TDK 4.7 μF Multilayer Ceramic Capacitor, 25V dc, ±10 %, Surface
  • RS Stock No. 788-3032
  • Mfr. Part No. C2012X7R1E475K125AB
Subtotal (1 pack of 10 units)
SGD1.92(exc. GST)
SGD0.192/unit
Temporarily out of stock
Panasonic 220 μF Electrolytic Capacitor 25V, Radial - EEUFR1E221B Radial
  • RS Stock No. 759-044P
  • Mfr. Part No. EEUFR1E221B
Subtotal 5 units (supplied as a tape)
SGD2.36(exc. GST)
SGD0.472/unit
Temporarily out of stock
Nidec Components 5V dc 25 ppr Pulse Optical Encoder with a 8 mm Flat Shaft, Snap-in, Wire
  • RS Stock No. 244-4134
  • Mfr. Part No. RESW20D-25-201-1
Subtotal (1 tray of 10 units)
SGD273.76(exc. GST)
SGD27.376/unit
In Stock
Murata, LQW, 0603 Wirewound Surface Mount Inductor 12 nH ±5 % 600 mA Idc Q:35
  • RS Stock No. 724-2905P
  • Mfr. Part No. LQW18AN12NJ00D
Subtotal 10 units (supplied on a continuous strip)
SGD1.36(exc. GST)
SGD0.136/unit
In Stock
NDK 8 MHz Crystal Unit ±50 ppm Surface Mount 2-Pin 0.8 mm 3.2 mm 2.5mm
  • RS Stock No. 184-7983
  • Mfr. Part No. NX3225GD-8MHZ-STD-CRA-3
Subtotal (1 pack of 5 units)
SGD10.85(exc. GST)
SGD2.17/unit
In Stock
Vishay 8.2 μH Composite Leaded Inductor, Max SRF:11.6 MHz, 20 A Idc, 6.14 mΩ Rdc, IHTH-0750IZ-5A
  • RS Stock No. 123-1526
  • Mfr. Part No. IHTH0750IZEB8R2M5A
Subtotal (1 unit)
SGD6.76(exc. GST)
SGD6.76/unit
Last RS stock
Same Sky 80 dB Through Hole Buzzer External Magnetic Buzzer 5.5 mm 9 V dc Min 5.5 mm 20V dc Max
  • RS Stock No. 259-6292
  • Mfr. Part No. CPT-1255C-090
Subtotal (1 pack of 5 units)
SGD9.50(exc. GST)
SGD1.90/unit
In Stock
RS PRO 2200 μF Capacitor 50V dc, Axial, Through Hole Axial
  • RS Stock No. 170-1143
Subtotal (1 bag of 50 units)
SGD178.50(exc. GST)
SGD3.57/unit
In Stock
Siretta TANGO23/1M/SMAM/S/RP/19 Puck WiFi Antenna with SMA RP Connector, ZigBee, ISM, WiFi, Bluetooth (BLE), IEEE
  • RS Stock No. 140-8057
  • Mfr. Part No. TANGO23/1M/SMAM/S/RP/19
Subtotal (1 bag of 1 unit)
SGD43.97(exc. GST)
SGD43.97/bag
In Stock
Bourns 3310 100 kΩ Rotary Potentiometer 1-Turns 2-Gang Panel Mount, Through Hole, 3310H-003-104L
  • RS Stock No. 522-0596
  • Mfr. Part No. 3310H-003-104L
Subtotal (1 unit)
SGD18.18(exc. GST)
SGD18.18/unit
Currently unavailable
TXC 25 MHz Crystal ±30 ppm Surface Mount 4-Pin 0.7 mm 3.2 mm 2.5mm
  • RS Stock No. 753-7174P
  • Mfr. Part No. 7M-25.000MAHE-T
Subtotal 5 units (supplied on a continuous strip)
SGD7.83(exc. GST)
SGD1.566/unit
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