SMD Capacitor Code Calculator

Advanced SMD Capacitor Tools

Capacitance to SMD Code Converter

Enter a capacitance value to find the corresponding SMD code

Capacitance Value (pF)

Preferred Format

Enter a capacitance value to see the SMD code.

Voltage Rating & Safety Calculator

Calculate voltage derating and safety margins for capacitors

Operating Voltage (V)

Capacitor Voltage Rating (V)

Safety Factor (%)

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RC Time Constant Calculator

Calculate time constant for RC circuits

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Batch SMD Capacitor Calculator

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SMD Capacitor Code Reference

SMD Capacitor Coding Systems

3-Digit Code: First 2 digits are significant figures, 3rd digit is multiplier (number of zeros) in pF
4-Digit EIA: First 3 digits are significant figures, 4th digit is multiplier, letter indicates tolerance
EIA-198: 2 characters (letter + digit) - letter represents value, digit represents multiplier
Direct Marking: Value written directly (1µF, 10n, 470p)
'R' indicates decimal point: 2R2 = 2.2pF, R47 = 0.47pF

Standard Capacitor Values

Series

Range

4-Digit EIA Tolerance Codes

Letter	Tolerance	Letter	Tolerance
B	±0.1pF	J	±5%
C	±0.25pF	K	±10%
D	±0.5pF	M	±20%
F	±1%	P	+100%/-0%
G	±2%	Z	+80%/-20%

EIA-198 Capacitance Values (Case Sensitive)

Code	pF	Code	pF	Code	pF	Code	pF
A	1.0	L	2.7	T	5.1	a	2.6
B	1.1	M	3.0	U	5.6	b	3.5
C	1.2	N	3.3	V	6.2	d	4.0
D	1.3	P	3.6	W	6.8	e	4.5
E	1.5	Q	3.9	X	7.5	f	5.0
F	1.6	R	4.3	Y	8.2	m	6.0
G	1.8	S	4.7	Z	9.1	n	7.0
H	2.0	-	-	-	-	t	8.0
J	2.2	-	-	-	-	y	9.0
K	2.4	-	-	-	-	-	-

EIA-198 Multiplier Codes

Code	Multiplier	Code	Multiplier
0	×1	5	×100,000
1	×10	6	×1,000,000
2	×100	7	×10,000,000
3	×1,000	8	×100,000,000
4	×10,000	9	×0.1

Capacitor Code Multipliers (3-Digit)

Code	Multiplier	Example	Value
0	×1	100	10 pF
1	×10	101	100 pF
2	×100	102	1,000 pF = 1 nF
3	×1,000	103	10,000 pF = 10 nF
4	×10,000	104	100,000 pF = 0.1 µF
5	×100,000	105	1,000,000 pF = 1 µF
6	×1,000,000	106	10,000,000 pF = 10 µF

SMD Package Sizes & Voltage Ratings

Package	Dimensions (mm)	Typical Voltage	Capacitance Range
0201	0.6 × 0.3	4-16V	0.1-100 pF
0402	1.0 × 0.5	6.3-50V	0.5-10 nF
0603	1.6 × 0.8	6.3-100V	1-100 nF
0805	2.0 × 1.25	6.3-100V	10 pF-1 µF
1206	3.2 × 1.6	6.3-100V	100 pF-10 µF
1210	3.2 × 2.5	6.3-100V	1 nF-22 µF
1812	4.5 × 3.2	6.3-100V	10 nF-47 µF
2220	5.7 × 5.0	6.3-100V	100 nF-100 µF

SMD Capacitor Code Examples

3-Digit Code Examples

104: 10 × 10⁴ = 100,000 pF = 0.1 µF

473: 47 × 10³ = 47,000 pF = 47 nF

102: 10 × 10² = 1,000 pF = 1 nF

220: 22 × 10⁰ = 22 pF

4-Digit EIA Examples

1001J: 100 × 10¹ = 1,000 pF ±5%

4703K: 470 × 10³ = 470,000 pF ±10%

1500F: 150 × 10⁰ = 150 pF ±1%

2202M: 220 × 10² = 22,000 pF ±20%

EIA-198 Examples

A5: 1.0 × 100,000 = 100,000 pF = 0.1 µF

S3: 4.7 × 1,000 = 4,700 pF = 4.7 nF

J2: 2.2 × 100 = 220 pF

m4: 6.0 × 10,000 = 60,000 pF = 60 nF

Direct Marking Examples

1µF: 1 microfarad

10n: 10 nanofarads

470p: 470 picofarads

2.2µ: 2.2 microfarads

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SMD Capacitor Code Calculator