KYOCERA AVX 08055C103KAQ2A Equivalent & Substitute Parts

Part Overview

The KYOCERA AVX 08055C103KAQ2A is a 10000 pF ±10% 50V X7R ceramic capacitor in 0805 (2012 Metric) surface mount package. This multilayer ceramic capacitor (MLCC) is designed for general-purpose applications with RoHS3 compliance and unlimited moisture sensitivity level (MSL 1). The part is currently active in production with 1061 pieces in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and application-specific requirements such as automotive qualification or enhanced voltage ratings.

Key Parameters

Parameter	Value
Capacitance	10000 pF
Tolerance	±10%
Voltage - Rated	50V
Temperature Coefficient	X7R
Operating Temperature Range	-55°C to 125°C
Package / Case	0805 (2012 Metric)
Mounting Type	Surface Mount, MLCC
Size / Dimension	0.079" L x 0.049" W (2.01mm x 1.25mm)
Thickness (Max)	0.037" (0.94mm)
Moisture Sensitivity Level (MSL)	1 (Unlimited)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 08055C103KAQ2A are classified based on the following substitution criteria:

Direct Equivalents (identical electrical and mechanical specifications):

Same capacitance: 10000 pF
Same tolerance: ±10%
Same voltage rating: 50V
Same temperature coefficient: X7R
Same package: 0805 (2012 Metric)
Same operating temperature: -55°C to 125°C
Same MSL: 1 (Unlimited)

Upgraded Variants (enhanced specifications within compatible parameters):

Voltage rating upgrades (200V, 250V) maintain backward compatibility
Tighter tolerance (±5%) provides improved precision
Automotive-grade qualification (AEC-Q200) for regulated applications
Soft termination features (FLEXITERM™ Flexisafe) for boardflex-sensitive applications
Alternative packaging formats (Tape & Reel) for production environments

Compliance Considerations:

RoHS3 compliance status
REACH regulatory status
Automotive qualification ratings

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Temp Coeff	Package	Thickness (Max)	RoHS Status	Automotive Rating	Inventory
08055C103KAQ2A	KYOCERA AVX	10000 pF	±10%	50V	X7R	0805	0.037" (0.94mm)	ROHS3	—	1061
LD055C103KAB2A	KYOCERA AVX	10000 pF	±10%	50V	X7R	0805	0.037" (0.94mm)	Non-compliant	—	15551
0805PC103KAT1A	KYOCERA AVX	10000 pF	±10%	250V	X7R	0805	0.051" (1.30mm)	ROHS3	—	6361
FS055C103KAZ2A	KYOCERA AVX	10000 pF	±10%	50V	X7R	0805	0.037" (0.94mm)	ROHS3	AEC-Q200	4746
KAM21BR71H103KM	KYOCERA AVX	10000 pF	±10%	50V	X7R	0805	0.037" (0.94mm)	ROHS3	AEC-Q200	31772
KAM21BR71H103KT	KYOCERA AVX	10000 pF	±10%	50V	X7R	0805	0.037" (0.94mm)	ROHS3	AEC-Q200	29166
KAS21BR71H103KT	KYOCERA AVX	10000 pF	±10%	50V	X7R	0805	0.037" (0.94mm)	ROHS3	AEC-Q200	7797
KGM21AR72D103JU	KYOCERA AVX	10000 pF	±5%	200V	X7R	0805	0.057" (1.45mm)	ROHS3	—	7021
KGM21NR71H103JT	KYOCERA AVX	10000 pF	±5%	50V	X7R	0805	0.039" (1.00mm)	ROHS3	—	44363
KGM21NR71H103KM	KYOCERA AVX	10000 pF	±10%	50V	X7R	0805	0.039" (1.00mm)	ROHS3	—	547048
KGM21NR71H103KT	KYOCERA AVX	10000 pF	±10%	50V	X7R	0805	0.039" (1.00mm)	ROHS3	—	437140

Engineering Selection Recommendations

Direct Substitution (Identical Specifications)

KGM21NR71H103KM and KGM21NR71H103KT are direct functional equivalents with identical electrical parameters (10000 pF, ±10%, 50V, X7R). Both parts maintain RoHS3 compliance and MSL 1 rating. These parts feature higher inventory availability (547048 and 437140 units respectively) and are suitable for general-purpose applications where the original part is unavailable.

Automotive-Qualified Alternatives

FS055C103KAZ2A, KAM21BR71H103KM, KAM21BR71H103KT, and KAS21BR71H103KT carry AEC-Q200 automotive qualification. These parts maintain identical electrical specifications to the main part and are appropriate for automotive and boardflex-sensitive applications. KAM21BR71H103KM and KAM21BR71H103KT provide the highest inventory levels among automotive-qualified options (31772 and 29166 units).

Voltage-Upgraded Variants

0805PC103KAT1A provides a 250V rating upgrade while maintaining 10000 pF capacitance and ±10% tolerance. This part is suitable for applications requiring higher voltage margin. KGM21AR72D103JU offers 200V rating with tighter ±5% tolerance, providing improved precision for demanding circuits.

Compliance Considerations

LD055C103KAB2A is electrically equivalent but carries RoHS non-compliant and REACH-affected status. This part is not recommended for new designs or regulated applications.

Frequently Asked Questions (FAQ)

Q: Can KGM21NR71H103KM replace 08055C103KAQ2A directly?

A: Yes. Both parts share identical electrical specifications (10000 pF, ±10%, 50V, X7R) and package format (0805). The KGM variant maintains RoHS3 compliance and MSL 1 rating. Thickness differs slightly (0.039" vs 0.037" max), which is within typical PCB assembly tolerances for 0805 components.

Q: What is the difference between the automotive-qualified parts and the general-purpose variants?

A: Automotive-qualified parts (FS055C103KAZ2A, KAM21BR71H103KM, KAM21BR71H103KT, KAS21BR71H103KT) carry AEC-Q200 certification, indicating compliance with automotive reliability standards. These parts are required for automotive applications. Electrical specifications remain identical to the main part. FS055C103KAZ2A and KAS21BR71H103KT additionally feature soft termination (FLEXITERM™ Flexisafe) for boardflex-sensitive applications.

Q: Can I use the 250V-rated part (0805PC103KAT1A) in place of the 50V part?

A: Yes, from an electrical compatibility standpoint. The 250V part maintains 10000 pF capacitance and ±10% tolerance. However, thickness increases to 0.051" (1.30mm) compared to 0.037" (0.94mm) for the original part. Verify PCB assembly clearance before substitution.

Q: What is the significance of tolerance differences (±10% vs ±5%)?

A: Tighter tolerance (±5%) provides improved capacitance accuracy. Parts with ±5% tolerance (KGM21NR71H103JT, KGM21AR72D103JU) are suitable for precision-critical circuits. The original ±10% tolerance is adequate for general-purpose applications. Substitution from ±10% to ±5% is acceptable; reverse substitution may not meet circuit requirements.

Q: Are all substitute parts available in Tape & Reel packaging?

A: Yes. All listed substitute parts are supplied in Tape & Reel (TR) format, suitable for automated assembly production environments. The original part (08055C103KAQ2A) packaging format is not specified in the provided data.

Q: What is the impact of RoHS compliance status on part selection?

A: RoHS3-compliant parts (all substitutes except LD055C103KAB2A) meet European Union Restriction of Hazardous Substances regulations. For new designs and regulated markets, RoHS3 compliance is mandatory. LD055C103KAB2A is not recommended due to non-compliant status.

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