04025C821MAT2A Equivalent & Substitute Parts

Part Overview

The 04025C821MAT2A is a 820 pF ±20% 50V ceramic capacitor manufactured by KYOCERA AVX in 0402 (1005 Metric) surface mount package. This multilayer ceramic capacitor (MLCC) with X7R temperature coefficient is designed for general purpose applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. The part is ROHS3 compliant with MSL 1 rating and is currently in active production status with 911 pieces in stock.

Equivalent and substitute parts are identified based on matching or superior electrical and mechanical specifications within the same package footprint, allowing direct replacement or upgrade scenarios in circuit designs.

Key Parameters

Parameter	Value
Capacitance	820 pF
Tolerance	±20%
Voltage Rating	50V
Temperature Coefficient	X7R
Operating Temperature Range	-55°C to 125°C
Package / Case	0402 (1005 Metric)
Mounting Type	Surface Mount, MLCC
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 04025C821MAT2A is determined by the following criteria:

Mandatory Matching Parameters:

Capacitance: 820 pF (exact match required)
Package / Case: 0402 (1005 Metric) (exact match required)
Mounting Type: Surface Mount, MLCC (exact match required)
Operating Temperature Range: -55°C to 125°C (exact match required)
RoHS Status: ROHS3 Compliant (exact match required)
Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Allowable Variation Parameters:

Tolerance: May be equal or tighter (±20%, ±10%, ±5%, ±1%)
Voltage Rating: May be equal or higher (50V or greater)
Temperature Coefficient: X7R or C0G/NP0 (both acceptable for general purpose applications)

Substitute parts are grouped by tolerance and voltage rating, with tighter tolerances and higher voltage ratings considered upgrades. Temperature coefficient variations (X7R to C0G/NP0) represent functional alternatives with different temperature stability characteristics.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Temperature Coefficient	Package	Product Status	Inventory (Pcs)
04025C821MAT2A	KYOCERA AVX	820 pF	±20%	50V	X7R	0402 (1005 Metric)	Active	911
04025C821JAT2A	KYOCERA AVX	820 pF	±5%	50V	X7R	0402 (1005 Metric)	Active	99,882
04025C821KAT2A	KYOCERA AVX	820 pF	±10%	50V	X7R	0402 (1005 Metric)	Active	30,645
C0402C821F5GAC7867	KEMET	820 pF	±1%	50V	C0G, NP0	0402 (1005 Metric)	Active	19,928
C0402C821J1GAC7867	KEMET	820 pF	±5%	100V	C0G, NP0	0402 (1005 Metric)	Active	20,756
C0402C821J5GAC7867	KEMET	820 pF	±5%	50V	C0G, NP0	0402 (1005 Metric)	Active	26,024
C0402C821J5RAC7867	KEMET	820 pF	±5%	50V	X7R	0402 (1005 Metric)	Active	21,066
C0402C821K5GAC7867	KEMET	820 pF	±10%	50V	C0G, NP0	0402 (1005 Metric)	Active	6,248
C0402C821K5RAC7867	KEMET	820 pF	±10%	50V	X7R	0402 (1005 Metric)	Active	68,590
CC0402JRX7R9BB821	YAGEO	820 pF	±5%	50V	X7R	0402 (1005 Metric)	Active	108,516
GRM155R71H821KA01D	Murata Electronics	820 pF	±10%	50V	X7R	0402 (1005 Metric)	Not For New Designs	17,000

Engineering Selection Recommendations

Direct Equivalents (Same Tolerance, Same Voltage, Same Temperature Coefficient): No direct equivalents exist from other manufacturers with identical ±20% tolerance. The 04025C821MAT2A is unique in its tolerance specification.

Upgrade Options (Tighter Tolerance, Same or Higher Voltage, Same Temperature Coefficient):

04025C821JAT2A (KYOCERA AVX): ±5% tolerance upgrade, same 50V rating, X7R coefficient. Active production status with high inventory availability.
04025C821KAT2A (KYOCERA AVX): ±10% tolerance upgrade, same 50V rating, X7R coefficient. Active production status.
C0402C821J5RAC7867 (KEMET): ±5% tolerance upgrade, same 50V rating, X7R coefficient. Active production status.
C0402C821K5RAC7867 (KEMET): ±10% tolerance upgrade, same 50V rating, X7R coefficient. Active production status with high inventory.
CC0402JRX7R9BB821 (YAGEO): ±5% tolerance upgrade, same 50V rating, X7R coefficient. Active production status with highest inventory availability.

Upgrade Options (Tighter Tolerance, Higher Voltage, Different Temperature Coefficient):

C0402C821J1GAC7867 (KEMET): ±5% tolerance, 100V rating upgrade, C0G/NP0 coefficient. Active production status. Suitable for applications requiring higher voltage margin and superior temperature stability.
C0402C821F5GAC7867 (KEMET): ±1% tolerance (tightest available), 50V rating, C0G/NP0 coefficient. Active production status. Suitable for precision applications requiring minimal capacitance variation.
C0402C821J5GAC7867 (KEMET): ±5% tolerance, 50V rating, C0G/NP0 coefficient. Active production status. Suitable for applications requiring superior temperature stability.
C0402C821K5GAC7867 (KEMET): ±10% tolerance, 50V rating, C0G/NP0 coefficient. Active production status.

Legacy Option (Not Recommended for New Designs):

GRM155R71H821KA01D (Murata Electronics): ±10% tolerance, 50V rating, X7R coefficient. Product status is "Not For New Designs." Use only for replacement in existing production lines or legacy systems.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and identical operating temperature range (-55°C to 125°C). Selection should be based on tolerance requirements, voltage margin needs, and temperature stability specifications of the target application.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with tighter tolerance than the original 04025C821MAT2A? A: Yes. Tighter tolerance specifications (±10%, ±5%, ±1%) are direct upgrades and provide improved capacitance accuracy. They are electrically compatible and mechanically interchangeable in the 0402 package.

Q: What is the difference between X7R and C0G/NP0 temperature coefficients? A: X7R provides ±15% capacitance variation across the -55°C to 125°C operating range. C0G/NP0 provides superior stability with minimal capacitance change across temperature. Both are acceptable for general purpose applications; C0G/NP0 is preferred for precision circuits requiring stable capacitance.

Q: Can I use a 100V rated capacitor in place of the 50V rated original? A: Yes. Higher voltage ratings provide additional safety margin and are electrically compatible. The C0402C821J1GAC7867 (100V, ±5%, C0G/NP0) is a suitable upgrade for applications requiring higher voltage headroom.

Q: Are all substitute parts available in the same packaging format? A: Yes. All listed substitute parts are supplied in Tape & Reel (TR) packaging in the 0402 (1005 Metric) surface mount package, ensuring compatibility with standard pick-and-place assembly equipment.

Q: Why is GRM155R71H821KA01D marked "Not For New Designs"? A: This Murata part is in legacy status. While functionally equivalent and currently in stock, it should only be used for replacement in existing production or legacy systems. For new designs, select from parts with "Active" production status.

Q: Which substitute offers the best availability? A: CC0402JRX7R9BB821 (YAGEO) has the highest inventory at 108,516 pieces, followed by C0402C821K5RAC7867 (KEMET) at 68,590 pieces. Both are active production parts with ±5% to ±10% tolerance and X7R temperature coefficient.

Q: Are all parts ROHS3 compliant? A: Yes. All listed parts, including the original 04025C821MAT2A, are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting current environmental and regulatory requirements.

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