08051C821KAT2P Ceramic Capacitor 820pF 100V X7R 0805 Equivalent & Substitute Parts

Part Overview

The 08051C821KAT2P is a surface mount multilayer ceramic capacitor (MLCC) manufactured by KYOCERA AVX with a capacitance of 820 pF, rated voltage of 100V, and X7R temperature coefficient. This component is designed for general purpose applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are necessary when the original part becomes unavailable, when design requirements demand higher voltage ratings or improved tolerance specifications, or when alternative temperature coefficient characteristics better suit application needs.

Key Parameters

Parameter	Value
Capacitance	820 pF
Tolerance	±10%
Voltage Rating	100V
Temperature Coefficient	X7R
Package / Case	0805 (2012 Metric)
Mounting Type	Surface Mount, MLCC
Operating Temperature Range	-55°C to 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 08051C821KAT2P is determined by the following critical parameters:

Mandatory Compatibility Parameters:

Capacitance value: 820 pF (exact match required)
Package / Case: 0805 (2012 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)

Allowable Variation Parameters:

Voltage Rating: Equal to or greater than 100V
Tolerance: ±10% or tighter (±5%, ±1%)
Temperature Coefficient: X7R or C0G/NP0 (both acceptable for general purpose applications)

Substitute parts are grouped into three categories based on voltage rating upgrades and temperature coefficient improvements. Parts with voltage ratings of 200V, 250V, 450V, and 500V are direct substitutes when circuit design permits higher voltage operation. Parts with C0G/NP0 temperature coefficient provide superior stability compared to X7R and are suitable for applications requiring tighter capacitance tolerance.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Temperature Coefficient	Package	Product Status	Inventory
08051C821KAT2P	KYOCERA AVX	820 pF	±10%	100V	X7R	0805	Active	1033 Pcs
08052C821KAT2A	KYOCERA AVX	820 pF	±10%	200V	X7R	0805	Active	10876 Pcs
KGM21BCG2A821FT	KYOCERA AVX	820 pF	±1%	100V	C0G, NP0	0805	Active	5124 Pcs
KGM21BCG2A821JT	KYOCERA AVX	820 pF	±5%	100V	C0G, NP0	0805	Active	25041 Pcs
C0805C821J1GAC7800	KEMET	820 pF	±5%	100V	C0G, NP0	0805	Active	12615 Pcs
C0805C821JAGAC7800	KEMET	820 pF	±5%	250V	C0G, NP0	0805	Active	4299 Pcs
C0805C821JCGAC7800	KEMET	820 pF	±5%	500V	C0G, NP0	0805	Active	3242 Pcs
C2012C0G2E821J060AA	TDK Corporation	820 pF	±5%	250V	C0G, NP0	0805	Last Time Buy	4813 Pcs
C2012C0G2E821K060AA	TDK Corporation	820 pF	±10%	250V	C0G, NP0	0805	Last Time Buy	2510 Pcs
C2012C0G2W821J060AA	TDK Corporation	820 pF	±5%	450V	C0G, NP0	0805	Last Time Buy	4660 Pcs
C2012C0G2W821K060AA	TDK Corporation	820 pF	±10%	450V	C0G, NP0	0805	Last Time Buy	1277 Pcs

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Characteristics): Select 08052C821KAT2A from KYOCERA AVX when the original part is unavailable. This part maintains identical capacitance, tolerance, temperature coefficient, and package specifications while providing a higher 200V voltage rating. Active production status ensures long-term availability.

For Improved Tolerance and Stability: KYOCERA AVX KGM21BCG2A821JT and KGM21BCG2A821FT offer C0G/NP0 temperature coefficient with tighter tolerance specifications (±5% and ±1% respectively). These parts provide superior capacitance stability across temperature variations compared to the X7R original. Both maintain 100V voltage rating and 0805 package compatibility. KGM21BCG2A821JT has significantly higher inventory availability (25041 Pcs).

For Higher Voltage Applications: KEMET C0805C821JAGAC7800 (250V) and C0805C821JCGAC7800 (500V) are suitable when circuit design requires elevated voltage margins. Both feature C0G/NP0 temperature coefficient and ±5% tolerance. KEMET C0805C821J1GAC7800 provides 100V rating with C0G/NP0 characteristics as an alternative to KYOCERA AVX KGM series.

For Cost-Optimized Selection: TDK Corporation C2012C0G2E821K060AA and C2012C0G2W821K060AA maintain ±10% tolerance matching the original specification while offering 250V and 450V ratings respectively. Note that TDK parts carry Last Time Buy status, indicating limited future availability.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and -55°C to 125°C operating temperature range, ensuring compatibility with existing assembly and storage processes.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a higher voltage rating than the original 100V specification?

A: Yes. A higher voltage rating is a direct upgrade that does not compromise circuit function. Parts rated at 200V, 250V, 450V, or 500V are electrically compatible with designs specified for 100V operation. The circuit will operate normally with improved voltage margin and reliability.

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 temperature range. C0G/NP0 provides ±30 ppm/°C, resulting in significantly tighter capacitance stability. For general purpose applications, both are acceptable. C0G/NP0 is preferred when circuit performance depends on precise capacitance values across temperature extremes.

Q: Are KYOCERA AVX, KEMET, and TDK parts interchangeable in the same PCB footprint?

A: Yes. All substitute parts use the 0805 (2012 Metric) package with identical footprint dimensions (0.079" L x 0.049" W). Physical placement and soldering procedures remain unchanged. Verify that PCB design accommodates the maximum thickness specification of each part (0.94mm for KYOCERA AVX, 0.88mm for KEMET, 0.75mm for TDK).

Q: What does "Last Time Buy" product status mean?

A: Last Time Buy indicates that the manufacturer will discontinue production after a specified date. TDK Corporation parts (C2012 series) carry this status. These parts remain available in current inventory but should not be selected for new long-term production designs. Use for legacy product support or when immediate availability is critical.

Q: Can I substitute a ±5% tolerance part for the original ±10% specification?

A: Yes. Tighter tolerance is a design improvement that does not create compatibility issues. A ±5% part will perform within the ±10% tolerance window, providing better capacitance accuracy. This substitution is suitable for all applications.

Q: Which substitute part offers the best long-term availability?

A: KYOCERA AVX KGM21BCG2A821JT (25041 Pcs inventory) and 08052C821KAT2A (10876 Pcs inventory) both have active production status and substantial inventory levels, ensuring reliable supply for ongoing production requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message