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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2861013RL

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250+
HK$0.400
1000+
HK$0.163
5000+
HK$0.133
10000+
HK$0.131
Min: 500 / Mult: 10
18ohm
± 1%
250mW
0603 [1608 Metric]
Thick Film
Pulse Withstanding
CRGP Series
± 100ppm/°C
50V
1.6mm
0.85mm
-55°C
155°C
-
2861013

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10+
HK$1.030
250+
HK$0.400
1000+
HK$0.163
5000+
HK$0.133
10000+
HK$0.131
Min: 10 / Mult: 10
18ohm
± 1%
250mW
0603 [1608 Metric]
Thick Film
Pulse Withstanding
CRGP Series
± 100ppm/°C
50V
1.6mm
0.85mm
-55°C
155°C
-
3579733

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HK$1.630
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HK$0.820
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HK$0.730
1000+
HK$0.635
2500+
HK$0.545
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Min: 10 / Mult: 10
18ohm
± 0.5%
250mW
0603 [1608 Metric]
Thick Film
Sulfur Resistant, Anti-Surge
ERJ-UP3 Series
± 100ppm/°C
150V
1.6mm
0.85mm
-55°C
155°C
AEC-Q200
3579733RL

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500+
HK$0.730
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HK$0.635
2500+
HK$0.545
5000+
HK$0.456
25000+
HK$0.366
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Min: 500 / Mult: 10
18ohm
± 0.5%
250mW
0603 [1608 Metric]
Thick Film
Sulfur Resistant, Anti-Surge
ERJ-UP3 Series
± 100ppm/°C
150V
1.6mm
0.85mm
-55°C
155°C
AEC-Q200
1652846

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HK$0.135
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HK$0.127
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HK$0.065
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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
2861257

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HK$0.666
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Min: 10 / Mult: 10
18ohm
± 1%
1.25W
2010 [5025 Metric]
Thick Film
Pulse Withstanding
CRGP Series
± 100ppm/°C
400V
5mm
2.5mm
-55°C
155°C
-
3538821

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HK$0.022
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Min: 10 / Mult: 10
18ohm
± 1%
100mW
0402 [1005 Metric]
Thick Film
Precision
RK73H Series
± 100ppm/K
75V
1.02mm
0.5mm
-55°C
155°C
AEC-Q200
1086291

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HK$1.860
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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
-
2908356

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10+
HK$0.173
100+
HK$0.091
500+
HK$0.074
1000+
HK$0.050
2500+
HK$0.038
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Min: 10 / Mult: 10
18ohm
± 5%
100mW
0603 [1608 Metric]
Thick Film
General Purpose
CR Series
± 200ppm/°C
50V
1.6mm
0.85mm
-55°C
155°C
-
1738827RL

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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
1697406

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HK$1.480
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HK$1.370
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HK$1.160
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Min: 1 / Mult: 1
18ohm
± 0.1%
100mW
0805 [2012 Metric]
Thin Film
Precision Low TCR
CPF Series
± 25ppm/°C
100V
2.01mm
1.25mm
-55°C
155°C
-
3548921

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HK$0.288
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HK$0.157
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HK$0.145
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12500+
HK$0.119
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Min: 10 / Mult: 10
18ohm
± 1%
250mW
1206 [3216 Metric]
Thick Film
Precision
RK73H Series
± 100ppm/K
200V
3.2mm
1.6mm
-55°C
155°C
AEC-Q200
1100145

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HK$0.494
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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
-
2861745

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HK$0.518
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Min: 10 / Mult: 10
18ohm
± 1%
1W
2512 [6432 Metric]
Thick Film
General Purpose
CRGCQ Series
± 200ppm/°C
200V
6.35mm
3.2mm
-55°C
155°C
AEC-Q200
1738827

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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
1652846RL

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HK$0.127
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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
1738990

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HK$0.419
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Min: 10 / Mult: 10
18ohm
± 1%
750mW
1206 [3216 Metric]
Thick Film
Pulse Proof, High Power
CRCW-HP e3 Series
± 100ppm/K
200V
3.1mm
1.6mm
-55°C
155°C
AEC-Q200
1697351RL

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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
-
1738935RL

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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
1697351

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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
-
1750894RL

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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
1100145RL

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Each (Supplied on Cut Tape)
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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

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Each (Supplied on Cut Tape)
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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
1738935

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Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
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
1086291RL

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Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
50+
HK$2.560
250+
HK$2.110
500+
HK$1.950
1000+
HK$1.860
2000+
HK$1.830
Min: 100 / Mult: 5
18ohm
± 5%
2W
2616 [6740 Metric]
Wirewound
High Power
SM Series
± 200ppm/°C
300V
6.7mm
4mm
-55°C
200°C
-
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