KYOCERA AVX 08055C102KAJ4A Equivalent & Substitute Parts

Part Overview

The KYOCERA AVX 08055C102KAJ4A is a 1000 pF ±10% 50V ceramic capacitor with X7R temperature coefficient in 0805 (2012 Metric) surface mount package. This part is Active status and suitable for general purpose applications. Substitute parts are identified based on matching capacitance, package, and operating temperature range while accommodating variations in voltage rating, tolerance, temperature coefficient, and compliance certifications.

Key Parameters

Parameter	Value
Capacitance	1000 pF
Tolerance	±10%
Voltage - Rated	50V
Temperature Coefficient	X7R
Operating Temperature	-55°C ~ 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)
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution logic is based on the following criteria:

Primary Matching Parameters (Required for Direct Substitution):

Capacitance: 1000 pF
Package / Case: 0805 (2012 Metric)
Operating Temperature: -55°C ~ 125°C
Mounting Type: Surface Mount, MLCC
Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variations:

Voltage Rating: Equal to or greater than 50V
Tolerance: ±10% or tighter (±5%)
Temperature Coefficient: X7R or C0G/NP0
Packaging Format: Tape & Reel (TR) acceptable for production environments
RoHS Status: ROHS3 Compliant preferred over RoHS non-compliant

Substitute parts are grouped by voltage rating and tolerance to facilitate selection based on application requirements and compliance needs.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Temp Coeff	Package	RoHS Status	Packaging
08055C102KAJ4A	KYOCERA AVX	1000 pF	±10%	50V	X7R	0805	RoHS non-compliant	-
KAM21BR71H102KT	KYOCERA AVX	1000 pF	±10%	50V	X7R	0805	ROHS3 Compliant	Tape & Reel (TR)
KGM21BCG1H102JM	KYOCERA AVX	1000 pF	±5%	50V	C0G, NP0	0805	ROHS3 Compliant	Tape & Reel (TR)
KGM21NR71H102JM	KYOCERA AVX	1000 pF	±5%	50V	X7R	0805	ROHS3 Compliant	Tape & Reel (TR)
KGM21NR72A102JM	KYOCERA AVX	1000 pF	±5%	100V	X7R	0805	ROHS3 Compliant	Tape & Reel (TR)
KGM21NR72A102JT	KYOCERA AVX	1000 pF	±5%	100V	X7R	0805	ROHS3 Compliant	Tape & Reel (TR)
KGM21NR72A102KM	KYOCERA AVX	1000 pF	±10%	100V	X7R	0805	ROHS3 Compliant	Tape & Reel (TR)
KGM21NR72A102KT	KYOCERA AVX	1000 pF	±10%	100V	X7R	0805	ROHS3 Compliant	Tape & Reel (TR)
KGM21NR72D102JT	KYOCERA AVX	1000 pF	±5%	200V	X7R	0805	ROHS3 Compliant	Tape & Reel (TR)
KGM21NR72D102KT	KYOCERA AVX	1000 pF	±10%	200V	X7R	0805	ROHS3 Compliant	Tape & Reel (TR)
KGM21NR72E102KT	KYOCERA AVX	1000 pF	±10%	250V	X7R	0805	ROHS3 Compliant	Tape & Reel (TR)

Engineering Selection Recommendations

Direct Replacement (Same Voltage Rating - 50V):

KAM21BR71H102KT and KGM21NR71H102JM are direct functional replacements for 08055C102KAJ4A. Both maintain 1000 pF capacitance, 0805 package, and -55°C to 125°C operating temperature. KAM21BR71H102KT matches the original ±10% tolerance and X7R temperature coefficient with ROHS3 compliance. KGM21NR71H102JM offers improved ±5% tolerance with X7R characteristics and ROHS3 compliance. KGM21BCG1H102JM provides C0G/NP0 temperature coefficient with ±5% tolerance for applications requiring superior temperature stability.

Higher Voltage Rating Substitutes (100V, 200V, 250V):

Parts with elevated voltage ratings (100V, 200V, 250V) are suitable when circuit design permits higher voltage components. These include KGM21NR72A102JM, KGM21NR72A102JT, KGM21NR72A102KM, KGM21NR72A102KT, KGM21NR72D102JT, KGM21NR72D102KT, and KGM21NR72E102KT. All maintain 1000 pF capacitance, 0805 package, and operating temperature range. Tolerance options include ±5% and ±10%. All substitute parts are ROHS3 compliant and available in Tape & Reel packaging.

Compliance Considerations:

The original part 08055C102KAJ4A is RoHS non-compliant. All listed substitute parts are ROHS3 compliant, meeting current environmental regulations. Selection should account for application compliance requirements and supply chain preferences.

Frequently Asked Questions (FAQ)

Q: Can KGM21NR72A102JT (100V) replace 08055C102KAJ4A (50V)?

A: Yes. The 100V rating exceeds the original 50V requirement. Capacitance (1000 pF), package (0805), operating temperature (-55°C to 125°C), and mounting type (Surface Mount, MLCC) are identical. The higher voltage rating provides additional design margin without affecting circuit performance in 50V applications.

Q: What is the difference between KAM21BR71H102KT and KGM21NR71H102JM?

A: Both are 1000 pF ±10% 50V X7R 0805 capacitors with ROHS3 compliance. KAM21BR71H102KT is rated for automotive applications (AEC-Q200). KGM21NR71H102JM is rated for general purpose applications. KGM21NR71H102JM offers ±5% tolerance instead of ±10%, providing tighter capacitance control.

Q: Why are some substitutes listed with ±5% tolerance instead of ±10%?

A: ±5% tolerance is a tighter specification than ±10%. Parts with ±5% tolerance are direct substitutes for ±10% applications because they meet the original tolerance requirement with improved accuracy. Selection depends on circuit requirements for capacitance precision.

Q: What does C0G/NP0 temperature coefficient mean compared to X7R?

A: C0G (also called NP0) provides superior temperature stability with minimal capacitance change across the operating temperature range. X7R allows greater capacitance variation with temperature but is suitable for general purpose applications. KGM21BCG1H102JM with C0G/NP0 is appropriate for temperature-sensitive circuits.

Q: Are all substitute parts available in the same packaging format?

A: The original part 08055C102KAJ4A packaging format is not specified. All listed substitute parts are available in Tape & Reel (TR) format, standard for production environments. Packaging format does not affect electrical performance or physical compatibility.

Q: Can I use KGM21NR72D102KT (200V) in place of the original 50V part?

A: Yes. The 200V rating exceeds the 50V requirement. All critical parameters match: 1000 pF capacitance, 0805 package, -55°C to 125°C operating temperature, and Surface Mount mounting. The higher voltage rating is compatible with 50V circuit designs.

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