04023C821MAT2A Equivalent & Substitute Parts

Part Overview

The 04023C821MAT2A is a 820 pF ±20% 25V ceramic capacitor manufactured by KYOCERA AVX with X7R temperature coefficient in 0402 (1005 Metric) surface mount package. This part is Active status and widely used in general purpose applications. Substitute parts are identified based on matching capacitance value, package size, and mounting type while allowing variations in voltage rating, tolerance, and temperature coefficient within acceptable engineering parameters.

Key Parameters

Parameter	Value
Capacitance	820 pF
Tolerance	±20%
Voltage - Rated	25V
Temperature Coefficient	X7R
Package / Case	0402 (1005 Metric)
Mounting Type	Surface Mount, MLCC
Operating Temperature	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 04023C821MAT2A is determined by the following critical parameters:

Fixed Parameters (Must Match):

Capacitance: 820 pF
Package / Case: 0402 (1005 Metric)
Mounting Type: Surface Mount, MLCC
Operating Temperature Range: -55°C ~ 125°C

Variable Parameters (Allowed to Differ):

Voltage Rating: May be equal or higher than 25V
Tolerance: May be tighter (lower) than ±20%
Temperature Coefficient: X7R or C0G/NP0 acceptable
Manufacturer: KYOCERA AVX or KEMET

All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with the original application requirements.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Temp Coeff	Package	Inventory
04023C821MAT2A	KYOCERA AVX	820 pF	±20%	25V	X7R	0402	801 Pcs
04023C821KAT2A	KYOCERA AVX	820 pF	±10%	25V	X7R	0402	25064 Pcs
04025C821JAT2A	KYOCERA AVX	820 pF	±5%	50V	X7R	0402	99882 Pcs
04025C821KAT2A	KYOCERA AVX	820 pF	±10%	50V	X7R	0402	30645 Pcs
04025C821MAT2A	KYOCERA AVX	820 pF	±20%	50V	X7R	0402	911 Pcs
C0402C821F5GAC7867	KEMET	820 pF	±1%	50V	C0G, NP0	0402	19928 Pcs
C0402C821J1GAC7867	KEMET	820 pF	±5%	100V	C0G, NP0	0402	20756 Pcs
C0402C821J3GAC7867	KEMET	820 pF	±5%	25V	C0G, NP0	0402	29282 Pcs
C0402C821J5GAC7867	KEMET	820 pF	±5%	50V	C0G, NP0	0402	26024 Pcs
C0402C821J5RAC7867	KEMET	820 pF	±5%	50V	X7R	0402	21066 Pcs
C0402C821K3RAC7867	KEMET	820 pF	±10%	25V	X7R	0402	20429 Pcs

Engineering Selection Recommendations

Same Voltage (25V) Substitutes:

04023C821KAT2A: Tighter tolerance (±10%) with same voltage and temperature coefficient. Direct upgrade path with higher inventory availability.
C0402C821J3GAC7867: KEMET equivalent with ±5% tolerance and C0G/NP0 temperature coefficient. Suitable where tighter tolerance and lower temperature drift are required.
C0402C821K3RAC7867: KEMET equivalent with ±10% tolerance and X7R temperature coefficient. Maintains same thermal characteristics as original.

Higher Voltage (50V) Substitutes:

04025C821JAT2A: KYOCERA AVX with ±5% tolerance and 50V rating. Provides voltage margin and improved tolerance.
04025C821KAT2A: KYOCERA AVX with ±10% tolerance and 50V rating. Maintains tolerance specification with voltage upgrade.
04025C821MAT2A: KYOCERA AVX with ±20% tolerance and 50V rating. Matches original tolerance with voltage upgrade.
C0402C821F5GAC7867: KEMET with ±1% tolerance and 50V rating. Highest precision option with C0G/NP0 stability.
C0402C821J5GAC7867: KEMET with ±5% tolerance and 50V rating. C0G/NP0 temperature coefficient for applications requiring minimal capacitance drift.
C0402C821J5RAC7867: KEMET with ±5% tolerance and 50V rating. X7R temperature coefficient matching original thermal behavior.

Higher Voltage (100V) Substitute:

C0402C821J1GAC7867: KEMET with ±5% tolerance and 100V rating. Maximum voltage margin with C0G/NP0 stability for demanding applications.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and -55°C ~ 125°C operating temperature range. Selection should be based on application voltage requirements, tolerance specifications, and temperature coefficient needs.

Frequently Asked Questions (FAQ)

Q: Can I use a 50V rated capacitor in place of the 25V original? A: Yes. Higher voltage ratings are acceptable substitutes. The 50V rated parts (04025C821JAT2A, 04025C821KAT2A, 04025C821MAT2A, and KEMET C0402 50V variants) provide voltage margin and are electrically compatible with 25V circuit requirements.

Q: What is the difference between X7R and C0G/NP0 temperature coefficients? A: X7R capacitors exhibit ±15% capacitance change over the -55°C ~ 125°C temperature range. C0G/NP0 capacitors maintain ±0.3% capacitance change over the same range. C0G/NP0 is preferred for precision applications requiring minimal temperature drift.

Q: Can I substitute a ±5% tolerance part for the ±20% original? A: Yes. Tighter tolerance specifications are acceptable substitutes. Parts with ±5%, ±10%, or ±1% tolerance will perform within the original ±20% specification window while providing improved accuracy.

Q: Are KYOCERA AVX and KEMET parts interchangeable? A: Yes, provided all other parameters match (capacitance, voltage, package, temperature coefficient). Both manufacturers produce ROHS3 compliant 0402 ceramic capacitors with identical physical dimensions and electrical characteristics for the same specifications.

Q: Does the 0402 package size remain constant across all substitutes? A: Yes. All listed substitute parts use the 0402 (1005 Metric) package with identical dimensions: 0.039" L x 0.020" W (1.00mm x 0.50mm). Physical compatibility is guaranteed.

Q: What inventory considerations should I account for? A: The original 04023C821MAT2A has 801 pieces in stock. Higher availability alternatives include 04025C821JAT2A (99882 Pcs), 04025C821KAT2A (30645 Pcs), and multiple KEMET C0402 variants (19928-29282 Pcs range).

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