KYOCERA AVX 08055C104KAT2M Equivalent & Substitute Parts

Part Overview

The KYOCERA AVX 08055C104KAT2M is a 0.1 µF ±10% 50V ceramic capacitor with X7R temperature coefficient in 0805 (2012 Metric) surface mount package. This part is currently obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The X7R temperature coefficient and general-purpose rating make this component suitable for a wide range of industrial and commercial electronic assemblies requiring stable capacitance across the operating temperature range of -55°C to 125°C.

Key Parameters

Parameter	Value
Capacitance	0.1 µF
Tolerance	±10%
Voltage Rating	50V
Temperature Coefficient	X7R
Operating Temperature Range	-55°C to 125°C
Package / Case	0805 (2012 Metric)
Mounting Type	Surface Mount, MLCC
Moisture Sensitivity Level	MSL 1 (Unlimited)
Size	0.079" L x 0.049" W (2.01mm x 1.25mm)
Thickness	0.037" (0.94mm)

Substitute Part Grouping Explanation

Substitution for the 08055C104KAT2M is determined by the following critical parameters:

Capacitance Value: 0.1 µF (exact match required)
Voltage Rating: Minimum 50V (equal or higher acceptable)
Temperature Coefficient: X7R (required for temperature stability)
Package: 0805 (2012 Metric) surface mount (physical and electrical compatibility)
Tolerance: ±10% or tighter (±5% acceptable as upgrade)
Mounting Type: Surface Mount, MLCC

Substitute parts are grouped into three categories:

Direct Equivalents maintain identical electrical specifications (0.1 µF, ±10%, 50V, X7R) with active product status and improved availability.

Packaging Variants provide the same electrical performance with different packaging formats (Bulk vs. Tape & Reel) to accommodate different procurement and assembly requirements.

Upgraded Specifications offer tighter tolerance (±5%) or higher voltage rating (100V) while maintaining backward compatibility with the original design requirements.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Temp Coeff	Package	Product Status	RoHS Status	Inventory
08055C104KAT2M	KYOCERA AVX	0.1 µF	±10%	50V	X7R	0805	Obsolete	REACH Unaffected	929 Pcs
08055C104KA79A	KYOCERA AVX	0.1 µF	±10%	50V	X7R	0805	Active	REACH Affected	809 Pcs
08055C104KH76A	KYOCERA AVX	0.1 µF	±10%	50V	X7R	0805	Active	REACH Affected	834 Pcs
AU055C104KA76A	KYOCERA AVX	0.1 µF	±10%	50V	X7R	0805	Active	ROHS3 Compliant	917 Pcs
08055C104JAJ2A	KYOCERA AVX	0.1 µF	±5%	50V	X7R	0805	Active	REACH Affected	765 Pcs
08055C104JAJ4A	KYOCERA AVX	0.1 µF	±5%	50V	X7R	0805	Active	REACH Affected	778 Pcs
FS055C104KAZ2A	KYOCERA AVX	0.1 µF	±10%	50V	X7R	0805	Active	ROHS3 Compliant	7486 Pcs
KAM21BR71H104KM	KYOCERA AVX	0.1 µF	±10%	50V	X7R	0805	Active	ROHS3 Compliant	96898 Pcs
KAM21BR71H104KT	KYOCERA AVX	0.1 µF	±10%	50V	X7R	0805	Active	ROHS3 Compliant	104186 Pcs
KAS21KR71H104KU	KYOCERA AVX	0.1 µF	±10%	50V	X7R	0805	Active	ROHS3 Compliant	144029 Pcs
KGM21AR72A104JU	KYOCERA AVX	0.1 µF	±5%	100V	X7R	0805	Active	ROHS3 Compliant	57302 Pcs

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications)

Select 08055C104KA79A, 08055C104KH76A, or AU055C104KA76A for direct electrical and mechanical compatibility. These parts maintain 0.1 µF ±10% 50V X7R specifications. AU055C104KA76A offers ROHS3 compliance and gold flash termination. The 08055C104KA79A and 08055C104KH76A are active products with standard termination.

For Improved Compliance and Availability

FS055C104KAZ2A, KAM21BR71H104KM, KAM21BR71H104KT, and KAS21KR71H104KU are all ROHS3 compliant with REACH unaffected status. KAM21BR71H104KT and KAS21KR71H104KU offer the highest inventory levels (104186 Pcs and 144029 Pcs respectively) and AEC-Q200 automotive qualification. KAS21KR71H104KU includes soft termination for boardflex-sensitive applications.

For Tighter Tolerance Requirements

08055C104JAJ2A and 08055C104JAJ4A provide ±5% tolerance while maintaining 50V rating and X7R temperature coefficient. These are suitable when circuit design requires improved capacitance accuracy.

For Higher Voltage Margin

KGM21AR72A104JU provides 0.1 µF ±5% at 100V rating, offering increased voltage headroom while maintaining X7R stability. This part is ROHS3 compliant with higher inventory availability (57302 Pcs).

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with higher voltage rating than the original 50V specification?

A: Yes. A higher voltage rating (such as the 100V KGM21AR72A104JU) is electrically compatible and provides additional safety margin. The capacitor will function correctly in circuits designed for 50V operation.

Q: What is the difference between the direct equivalent parts (08055C104KA79A, 08055C104KH76A, AU055C104KA76A)?

A: All three maintain identical electrical specifications (0.1 µF ±10% 50V X7R 0805). AU055C104KA76A includes gold flash termination and ROHS3 compliance. The 08055C104KA79A and 08055C104KH76A differ in internal manufacturing codes but are electrically equivalent.

Q: Are the FLEXITERM™ Flexisafe parts (FS055C104KAZ2A, KAS21KR71H104KU) compatible with standard PCB assembly?

A: Yes. These parts feature soft termination technology for boardflex-sensitive applications but maintain standard 0805 package dimensions and electrical performance. They are fully compatible with conventional surface mount assembly processes.

Q: What does ROHS3 compliance mean for component selection?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead and other hazardous materials. ROHS3 compliant parts are required for many commercial and industrial applications, particularly in European markets.

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

A: Yes. Tighter tolerance (±5%) is a specification upgrade and maintains backward compatibility. The circuit will experience improved capacitance accuracy without functional changes.

Q: Which substitute offers the best availability?

A: KAS21KR71H104KU provides the highest inventory (144029 Pcs) with ROHS3 compliance, AEC-Q200 automotive qualification, and soft termination features. KAM21BR71H104KT is the second option with 104186 Pcs in stock.

Q: Are all substitute parts in the same 0805 package size?

A: Yes. All listed substitutes maintain the 0805 (2012 Metric) surface mount package with identical footprint dimensions (0.079" L x 0.049" W). Physical compatibility with existing PCB layouts is maintained across all options.

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