Equivalent & Substitute Parts for 08055C104JAT2P

Part Overview

The 08055C104JAT2P is a 0.1 µF ±5% 50V ceramic capacitor with X7R temperature coefficient in 0805 (2012 Metric) surface mount package manufactured by KYOCERA AVX. This part is classified as obsolete, making substitute components necessary for new designs and ongoing production requirements. The X7R dielectric provides stable capacitance across the operating temperature range of -55°C to 125°C, suitable for general-purpose applications including bypass and decoupling functions.

Key Parameters

Parameter	Value
Capacitance	0.1 µF
Tolerance	±5%
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	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 08055C104JAT2P is determined by strict equivalence in the following parameters: capacitance value (0.1 µF), tolerance (±5%), voltage rating (50V minimum), temperature coefficient (X7R), package type (0805), and operating temperature range (-55°C to 125°C). All substitute parts listed maintain these core electrical and mechanical specifications.

Substitute parts are grouped into three categories:

Direct Manufacturer Substitutes (KYOCERA AVX): Parts KGM21NR71H104JM and KGM21NR71H104JT provide direct functional equivalence with identical electrical parameters and active product status. These parts feature RoHS3 compliance and represent the primary replacement path for the obsolete 08055C104JAT2P.

Upgrade Options: Part KAM21BR71H104JT adds AEC-Q200 automotive qualification while maintaining 50V rating. Part KGM21AR72A104JU increases voltage rating to 100V, providing enhanced margin for applications with voltage transients, though this represents a parametric upgrade rather than a direct equivalent.

Parametric Equivalents (KYOCERA AVX): Parts 08055C104JAJ2A, 08055C104JAJ4A, and LD055C104JAB2A match all electrical specifications but differ in packaging format or compliance status. These serve as alternatives when specific packaging or legacy compliance requirements apply.

Cross-Manufacturer Equivalents: Parts from Walsin Technology Corporation (0805B104J500CT), Knowles Syfer (0805J0500104JXT), and KEMET (C0805C104J5RAC7800) provide functional equivalence with identical electrical and mechanical parameters, offering supply chain flexibility.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Temp Coeff	Package	Thickness (Max)	Product Status	RoHS Status	Packaging Type
08055C104JAT2P	KYOCERA AVX	0.1 µF	±5%	50V	X7R	0805	0.037" (0.94mm)	Obsolete	REACH Unaffected	—
KGM21NR71H104JM	KYOCERA AVX	0.1 µF	±5%	50V	X7R	0805	0.039" (1.00mm)	Active	ROHS3 Compliant	Tape & Reel
KAM21BR71H104JT	KYOCERA AVX	0.1 µF	±5%	50V	X7R	0805	0.037" (0.94mm)	Active	ROHS3 Compliant	Tape & Reel
KGM21AR72A104JU	KYOCERA AVX	0.1 µF	±5%	100V	X7R	0805	0.057" (1.45mm)	Active	ROHS3 Compliant	Tape & Reel
KGM21NR71H104JT	KYOCERA AVX	0.1 µF	±5%	50V	X7R	0805	0.039" (1.00mm)	Active	ROHS3 Compliant	Tape & Reel
08055C104JAJ2A	KYOCERA AVX	0.1 µF	±5%	50V	X7R	0805	0.037" (0.94mm)	Active	RoHS non-compliant	—
08055C104JAJ4A	KYOCERA AVX	0.1 µF	±5%	50V	X7R	0805	0.037" (0.94mm)	Active	RoHS non-compliant	Tape & Reel
LD055C104JAB2A	KYOCERA AVX	0.1 µF	±5%	50V	X7R	0805	0.037" (0.94mm)	Active	RoHS non-compliant	Tape & Reel
0805B104J500CT	Walsin Technology Corporation	0.1 µF	±5%	50V	X7R	0805	0.035" (0.90mm)	Active	ROHS3 Compliant	Cut Tape & Digi-Reel
0805J0500104JXT	Knowles Syfer	0.1 µF	±5%	50V	X7R	0805	0.051" (1.30mm)	Active	ROHS3 Compliant	Cut Tape & Digi-Reel
C0805C104J5RAC7800	KEMET	0.1 µF	±5%	50V	X7R	0805	0.035" (0.88mm)	Active	ROHS3 Compliant	Tape & Reel

Engineering Selection Recommendations

For new designs and production requiring a direct replacement for the obsolete 08055C104JAT2P, KGM21NR71H104JM or KGM21NR71H104JT from KYOCERA AVX are the primary selections. Both parts maintain identical electrical specifications, feature active product status, and carry ROHS3 compliance certification. The difference between these two parts is packaging format: KGM21NR71H104JM is supplied in Tape & Reel format with 67,008 units in stock, while KGM21NR71H104JT is also Tape & Reel with 143,911 units available.

When PCB layout constraints require minimal component height, 0805B104J500CT (Walsin) or C0805C104J5RAC7800 (KEMET) offer reduced thickness specifications (0.035" and 0.088" respectively) while maintaining full electrical equivalence and RoHS3 compliance.

For applications requiring automotive qualification, KAM21BR71H104JT provides AEC-Q200 certification with identical 50V rating and matching thickness to the original part.

When voltage margin is required, KGM21AR72A104JU increases the voltage rating to 100V. Note that this part exhibits increased thickness (0.057") due to the higher voltage dielectric requirement, which may impact PCB layout and assembly processes.

Parts 08055C104JAJ2A, 08055C104JAJ4A, and LD055C104JAB2A are electrically equivalent but carry RoHS non-compliant and REACH Affected designations, limiting their use to legacy applications or regions without RoHS requirements.

Frequently Asked Questions (FAQ)

Q: Can KGM21NR71H104JM directly replace 08055C104JAT2P without PCB layout changes?

A: Yes. Both parts share identical electrical specifications (0.1 µF, ±5%, 50V, X7R) and the same 0805 package footprint. The thickness difference (0.039" vs 0.037") is within typical PCB assembly tolerances and does not require layout modification.

Q: What is the difference between KGM21NR71H104JM and KGM21NR71H104JT?

A: Both parts are electrically and mechanically identical. The difference is packaging format and inventory availability. KGM21NR71H104JM has 67,008 units in stock, while KGM21NR71H104JT has 143,911 units available. Both are supplied in Tape & Reel format.

Q: Why does KGM21AR72A104JU have greater thickness?

A: KGM21AR72A104JU is rated for 100V compared to the 50V rating of the original part. The higher voltage rating requires a thicker dielectric layer, resulting in increased component height (0.057" vs 0.037"). This part is suitable only for applications where the higher voltage rating provides design benefit.

Q: Are cross-manufacturer parts (Walsin, Knowles Syfer, KEMET) fully compatible?

A: Yes. Parts 0805B104J500CT, 0805J0500104JXT, and C0805C104J5RAC7800 maintain identical electrical and mechanical specifications to the original part. All are RoHS3 compliant and suitable for direct substitution. Thickness variations are minor and within assembly process tolerances.

Q: Which substitute part should be selected for new production?

A: KGM21NR71H104JT is recommended for new production due to highest inventory availability (143,911 units), active product status, ROHS3 compliance, and identical electrical specifications. Alternative sources (Walsin, Knowles Syfer, KEMET) provide supply chain redundancy.

Q: Can parts marked as RoHS non-compliant be used?

A: Parts 08055C104JAJ2A, 08055C104JAJ4A, and LD055C104JAB2A are electrically equivalent but carry RoHS non-compliant designation. Their use is restricted to applications and regions without RoHS requirements. For new designs, RoHS3 compliant alternatives are recommended.

Q: What is the significance of AEC-Q200 certification on KAM21BR71H104JT?

A: AEC-Q200 certification indicates the part meets automotive industry reliability and qualification standards. KAM21BR71H104JT is suitable for automotive applications requiring this certification level while maintaining the same 50V electrical rating as the original part.

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