18ohm Chip SMD Resistors:

369 Products Found
We offer a wide range of Metal Film, Metal Foil, and Thick Film chip SMD resistors, with resistance values from 0.003Ω to 50GΩ and power ratings from 30mW to 50W.

How do I choose a chip SMD resistor?

Chip SMD resistors are commonly used for pull-up/pull-down operations to ensure a signal is at valid logic level when external devices are removed, voltage divisions, current limiting, and filtering signals at certain frequencies in high-pass/low-pass/band-pass filters. You can use 0Ω resistors as jumpers to disable a sub-section of a circuit. There are three kinds of Chip SMD Resistors:

  1. Thin Film or Metal Film resistors are used in high precision applications like audio, medical, or test equipment. They have lower variation (0.1%-2%), a lower temperature coefficient (5 ppm/K), and are less noisy compared to thick film resistors. However, they are more expensive.
  2. Thick Film resistors are the most common type of resistor, and are used for most applications. They have higher variation (1%-5%), a higher temperature coefficient (50 ppm/K), and are noisier than thin film resistors. If there are no specific performance requirements, thick film resistors are usually the preferred choice.
  3. There are also Metal Foil resistors which provide high rated power and excellent load life stability along with extremely low Temperature Coefficient of Resistance (TCR).

SMD resistor sizes

The shape and size of chip SMD resistors are standardized, with most manufacturers using the JEDEC standards. The size of chip SMD resistors is indicated by a numerical code, such as 0603. This code contains the length and width of the package. So, the imperial code 0603 indicates a length of 0.060" and a width of 0.030".

Although SMD package codes can be given in either imperial or metric units, the imperial code is used more often to indicate the package size. Confusingly, even when the imperial naming convention is used, the metric dimensions are often used during the design of the printed circuit boards (PCBs). In general, you can assume the code is in imperial units, but the dimensions used are in mm. The SMD resistor size used depends primarily on the required power rating, the minimum feature size of the PCB manufacturing, and the limitations of the pick-and-place equipment.

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1652846

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
HK$0.261
100+
HK$0.135
500+
HK$0.127
1000+
HK$0.068
2500+
HK$0.065
More Pricing...
Min: 10 / Mult: 10
18ohm
± 1%
100mW
0603 [1608 Metric]
Thick Film
General Purpose
CRCW e3 Series
± 100ppm/K
75V
1.55mm
0.85mm
-55°C
155°C
AEC-Q200
2447586

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Each (Supplied on Cut Tape)
Cut Tape
10+
HK$0.080
100+
HK$0.070
500+
HK$0.059
1000+
HK$0.049
2500+
HK$0.034
Min: 10 / Mult: 10
18ohm
± 1%
125mW
0805 [2012 Metric]
Thick Film
General Purpose
MCWR Series
± 100ppm/°C
150V
2.01mm
1.25mm
-55°C
155°C
-
2446903

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Each (Supplied on Full Reel)
Full Reel
Packaging Options
5000+
HK$0.025
25000+
HK$0.020
Min: 5000 / Mult: 5000
18ohm
± 1%
125mW
0805 [2012 Metric]
Thick Film
General Purpose
MCWR Series
± 100ppm/°C
150V
2.01mm
1.25mm
-55°C
155°C
-
2426561

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Each (Supplied on Cut Tape)
Cut Tape
10+
HK$3.640
100+
HK$1.600
500+
HK$1.240
1000+
HK$1.030
2000+
HK$0.921
More Pricing...
Min: 10 / Mult: 10
18ohm
± 1%
2W
2512 [6432 Metric]
Thick Film
High Power
-
± 100ppm/°C
250V
6.35mm
3.2mm
-55°C
155°C
-
2074589

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Each (Supplied on Cut Tape)
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10+
HK$0.374
100+
HK$0.272
500+
HK$0.158
1000+
HK$0.120
2500+
HK$0.107
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Min: 10 / Mult: 10
18ohm
± 1%
250mW
1206 [3216 Metric]
Thick Film
Sulfur Resistant
-
± 100ppm/°C
200V
3.2mm
1.6mm
-55°C
155°C
-
2138758

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Each (Supplied on Cut Tape)
Cut Tape
10+
HK$0.323
100+
HK$0.169
500+
HK$0.150
1000+
HK$0.131
2500+
HK$0.129
Min: 10 / Mult: 10
18ohm
± 1%
125mW
0805 [2012 Metric]
Thick Film
General Purpose
CRCW e3 Series
± 100ppm/K
150V
2mm
1.25mm
-55°C
155°C
AEC-Q200
1086291

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Each (Supplied on Cut Tape)
Cut Tape
5+
HK$4.440
50+
HK$2.560
250+
HK$2.110
500+
HK$1.950
1000+
HK$1.860
More Pricing...
Min: 5 / Mult: 5
18ohm
± 5%
2W
2616 [6740 Metric]
Wirewound
High Power
SM Series
± 200ppm/°C
300V
6.7mm
4mm
-55°C
200°C
-
1738827RL

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Re-Reel
Packaging Options
500+
HK$0.219
2500+
HK$0.143
5000+
HK$0.131
10000+
HK$0.119
Min: 500 / Mult: 10
18ohm
± 1%
200mW
0402 [1005 Metric]
Thick Film
Pulse Proof, High Power
CRCW-HP e3 Series
± 100ppm/K
50V
1mm
0.5mm
-55°C
155°C
AEC-Q200
9239022RL

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Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
500+
HK$0.033
2500+
HK$0.025
5000+
HK$0.024
Min: 500 / Mult: 10
18ohm
± 1%
62.5mW
0402 [1005 Metric]
Thick Film
General Purpose
RC_L Series
± 100ppm/°C
50V
1mm
0.5mm
-55°C
155°C
-
1100145

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
HK$0.568
100+
HK$0.494
500+
HK$0.485
1000+
HK$0.475
2500+
HK$0.465
Min: 10 / Mult: 10
18ohm
± 1%
250mW
1206 [3216 Metric]
Thick Film
General Purpose
WCR Series
± 100ppm/°C
200V
3.2mm
1.6mm
-55°C
155°C
-
2138758RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
500+
HK$0.150
1000+
HK$0.131
2500+
HK$0.129
Min: 500 / Mult: 10
18ohm
± 1%
125mW
0805 [2012 Metric]
Thick Film
General Purpose
CRCW e3 Series
± 100ppm/K
150V
2mm
1.25mm
-55°C
155°C
AEC-Q200
2426561RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
HK$1.600
500+
HK$1.240
1000+
HK$1.030
2000+
HK$0.921
4000+
HK$0.786
More Pricing...
Min: 100 / Mult: 10
18ohm
± 1%
2W
2512 [6432 Metric]
Thick Film
High Power
-
± 100ppm/°C
250V
6.35mm
3.2mm
-55°C
155°C
-
1265175

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Each (Supplied on Cut Tape)
Cut Tape
10+
HK$0.773
250+
HK$0.731
1000+
HK$0.596
5000+
HK$0.546
12000+
HK$0.463
Min: 10 / Mult: 10
18ohm
± 5%
1W
2512 [6432 Metric]
Thick Film
High Power
3520 Series
± 200ppm/°C
200V
6.4mm
3.2mm
-
-
-
1652846RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
500+
HK$0.127
1000+
HK$0.068
2500+
HK$0.065
5000+
HK$0.064
Min: 500 / Mult: 10
18ohm
± 1%
100mW
0603 [1608 Metric]
Thick Film
General Purpose
CRCW e3 Series
± 100ppm/K
75V
1.55mm
0.85mm
-55°C
155°C
AEC-Q200
1738827

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
HK$0.412
100+
HK$0.294
500+
HK$0.219
2500+
HK$0.143
5000+
HK$0.131
More Pricing...
Min: 10 / Mult: 10
18ohm
± 1%
200mW
0402 [1005 Metric]
Thick Film
Pulse Proof, High Power
CRCW-HP e3 Series
± 100ppm/K
50V
1mm
0.5mm
-55°C
155°C
AEC-Q200
1697351RL

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Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
HK$1.420
250+
HK$1.310
500+
HK$1.200
Min: 100 / Mult: 10
18ohm
± 0.1%
62.5mW
0603 [1608 Metric]
Thin Film
Precision Low TCR
CPF Series
± 25ppm/°C
50V
1.6mm
0.85mm
-55°C
155°C
-
1697351

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Each (Supplied on Cut Tape)
Cut Tape
1+
HK$2.060
50+
HK$1.540
100+
HK$1.420
250+
HK$1.310
500+
HK$1.200
Min: 1 / Mult: 1
18ohm
± 0.1%
62.5mW
0603 [1608 Metric]
Thin Film
Precision Low TCR
CPF Series
± 25ppm/°C
50V
1.6mm
0.85mm
-55°C
155°C
-
1738935RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
500+
HK$0.285
1000+
HK$0.252
2500+
HK$0.251
Min: 500 / Mult: 10
18ohm
± 1%
500mW
0805 [2012 Metric]
Thick Film
Pulse Proof, High Power
CRCW-HP e3 Series
± 100ppm/K
150V
2mm
1.25mm
-55°C
155°C
AEC-Q200
1750894RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
HK$1.030
500+
HK$0.857
1000+
HK$0.683
2500+
HK$0.597
5000+
HK$0.510
Min: 100 / Mult: 25
18ohm
± 1%
500mW
1210 [3225 Metric]
Thick Film
High Power, Anti-Surge
ERJ-P14 Series
± 100ppm/°C
200V
3.2mm
2.5mm
-55°C
155°C
AEC-Q200
2253864

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
HK$1.350
100+
HK$1.200
500+
HK$1.070
1000+
HK$1.010
2500+
HK$0.838
More Pricing...
Min: 10 / Mult: 10
18ohm
± 1%
500mW
0805 [2012 Metric]
Thick Film (Double Sided)
High Power, Anti-Surge
ERJ-P6W Series
± 200ppm/°C
150V
2.01mm
1.25mm
-55°C
155°C
AEC-Q200
1265175RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
250+
HK$0.731
1000+
HK$0.596
5000+
HK$0.546
12000+
HK$0.463
Min: 500 / Mult: 10
18ohm
± 5%
1W
2512 [6432 Metric]
Thick Film
High Power
3520 Series
± 200ppm/°C
200V
6.4mm
3.2mm
-
-
-
1100145RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
500+
HK$0.485
1000+
HK$0.475
2500+
HK$0.465
Min: 500 / Mult: 10
18ohm
± 1%
250mW
1206 [3216 Metric]
Thick Film
General Purpose
WCR Series
± 100ppm/°C
200V
3.2mm
1.6mm
-55°C
155°C
-
1738881

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
HK$0.403
100+
HK$0.313
500+
HK$0.247
1000+
HK$0.190
2500+
HK$0.174
More Pricing...
Min: 10 / Mult: 10
18ohm
± 1%
333.3mW
0603 [1608 Metric]
Thick Film
Pulse Proof, High Power
CRCW-HP e3 Series
± 100ppm/K
75V
1.6mm
0.85mm
-55°C
155°C
AEC-Q200
9239022

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
HK$0.066
100+
HK$0.042
500+
HK$0.033
2500+
HK$0.025
5000+
HK$0.024
Min: 10 / Mult: 10
18ohm
± 1%
62.5mW
0402 [1005 Metric]
Thick Film
General Purpose
RC_L Series
± 100ppm/°C
50V
1mm
0.5mm
-55°C
155°C
-
1738935

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
HK$0.510
100+
HK$0.319
500+
HK$0.285
1000+
HK$0.252
2500+
HK$0.251
Min: 10 / Mult: 10
18ohm
± 1%
500mW
0805 [2012 Metric]
Thick Film
Pulse Proof, High Power
CRCW-HP e3 Series
± 100ppm/K
150V
2mm
1.25mm
-55°C
155°C
AEC-Q200
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