08055A101KAJ2A Ceramic Capacitor 100pF 50V C0G/NP0 0805 Equivalent & Substitute Parts

Part Overview

The 08055A101KAJ2A is a 100 pF ceramic capacitor manufactured by KYOCERA AVX in 0805 (2012 Metric) surface mount package with C0G/NP0 temperature coefficient and 50V rated voltage. This part is active and currently in stock with 1104 units available. The component is designed for general-purpose applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. Equivalent and substitute parts are identified based on matching or exceeding electrical specifications while maintaining mechanical compatibility with the 0805 package footprint.

Key Parameters

Parameter	Value
Capacitance	100 pF
Tolerance	±10%
Voltage - Rated	50V
Temperature Coefficient	C0G, NP0
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)
Thickness (Max)	0.037" (0.94mm)
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 08055A101KAJ2A is determined by the following criteria:

Primary Matching Criteria:

Capacitance value: 100 pF (exact match required)
Temperature coefficient: C0G/NP0 (required for stability)
Package: 0805 (2012 Metric) (mechanical compatibility)
Operating temperature range: -55°C ~ 125°C (functional requirement)
Mounting type: Surface Mount, MLCC (assembly compatibility)

Allowable Variations:

Voltage rating: Equal to or greater than 50V (higher voltage ratings provide design margin)
Tolerance: ±1%, ±2%, or ±10% (tighter tolerances are acceptable upgrades)
RoHS/REACH compliance: Upgrades to compliant versions are acceptable

Substitute parts are organized into three categories: direct upgrades with improved voltage ratings, tolerance upgrades with same voltage, and manufacturer-recommended alternatives with different dielectric materials (X7R).

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Temp Coeff	Package	RoHS Status	Inventory
08055A101KAJ2A	KYOCERA AVX	100 pF	±10%	50V	C0G/NP0	0805	Non-compliant	1104
0805CA101KAT1A	KYOCERA AVX	100 pF	±10%	630V	C0G/NP0	0805	ROHS3 Compliant	1627
KGM21BCG1H101FT	KYOCERA AVX	100 pF	±1%	50V	C0G/NP0	0805	ROHS3 Compliant	4676
KGM21BCG1H101GT	KYOCERA AVX	100 pF	±2%	50V	C0G/NP0	0805	ROHS3 Compliant	11291
KGM21BCG2A101FT	KYOCERA AVX	100 pF	±1%	100V	C0G/NP0	0805	ROHS3 Compliant	31652
KGM21BCG2A101GT	KYOCERA AVX	100 pF	±2%	100V	C0G/NP0	0805	ROHS3 Compliant	9227
KGM21BCG2A101KT	KYOCERA AVX	100 pF	±10%	100V	C0G/NP0	0805	ROHS3 Compliant	45179
KGM21BCG2D101KT	KYOCERA AVX	100 pF	±10%	200V	C0G/NP0	0805	ROHS3 Compliant	47313
08051C101JAT2A	KYOCERA AVX	100 pF	±5%	100V	X7R	0805	ROHS3 Compliant	28092
08051C101KAT2A	KYOCERA AVX	100 pF	±10%	100V	X7R	0805	ROHS3 Compliant	21107
08052C101KAT2A	KYOCERA AVX	100 pF	±10%	200V	X7R	0805	ROHS3 Compliant	29354

Engineering Selection Recommendations

C0G/NP0 Direct Substitutes (Recommended for Specification Compliance):

For applications requiring C0G/NP0 temperature coefficient stability, the following parts provide direct substitution with improved specifications:

KGM21BCG1H101FT and KGM21BCG1H101GT: Same 50V rating with tighter tolerance (±1% and ±2% respectively) and ROHS3 compliance. These are suitable for designs where the original 50V specification is adequate and improved tolerance is beneficial.
KGM21BCG2A101FT, KGM21BCG2A101GT, and KGM21BCG2A101KT: 100V rated alternatives with ROHS3 compliance. These provide increased voltage margin for the same 0805 package and are suitable for designs where higher voltage headroom is desired.
KGM21BCG2D101KT: 200V rated C0G/NP0 alternative with ROHS3 compliance, providing maximum voltage margin within the 0805 package.
0805CA101KAT1A: 630V rated C0G/NP0 alternative with ROHS3 compliance and Tape & Reel packaging, suitable for high-voltage applications.

X7R Alternatives (Manufacturer Recommended):

08051C101JAT2A and 08051C101KAT2A: 100V rated X7R dielectric with ROHS3 compliance. X7R offers wider temperature coefficient range compared to C0G/NP0 but maintains acceptable stability for general-purpose applications.
08052C101KAT2A: 200V rated X7R alternative with ROHS3 compliance.

All substitute parts maintain the 0805 (2012 Metric) package footprint, surface mount assembly compatibility, and MSL 1 moisture sensitivity rating. Selection should be based on voltage requirement, tolerance specification, and compliance requirements of the target application.

Frequently Asked Questions (FAQ)

Q: Can I use a higher voltage-rated capacitor as a substitute?

A: Yes. A capacitor with a higher voltage rating than the original 50V specification is a valid substitute provided all other parameters match (capacitance, tolerance, temperature coefficient, package). Higher voltage ratings provide additional design margin and do not negatively impact circuit performance in applications designed for lower voltages.

Q: What is the difference between C0G/NP0 and X7R temperature coefficients?

A: C0G/NP0 provides superior temperature stability with minimal capacitance change across the -55°C to 125°C operating range, making it suitable for precision applications. X7R offers acceptable stability for general-purpose applications but exhibits greater capacitance variation with temperature. Selection depends on circuit requirements for capacitance stability.

Q: Are the KGM series parts direct replacements for the 08055A101KAJ2A?

A: Yes, the KGM series parts (KGM21BCG1H101FT, KGM21BCG1H101GT, KGM21BCG2A101FT, KGM21BCG2A101GT, KGM21BCG2A101KT, KGM21BCG2D101KT) are direct mechanical and electrical replacements. They maintain the same 0805 package footprint, capacitance value, and C0G/NP0 temperature coefficient while offering improved RoHS3 compliance and, in most cases, higher voltage ratings or tighter tolerances.

Q: What does ±10%, ±5%, ±2%, and ±1% tolerance mean?

A: Tolerance specifies the allowable deviation from the nominal 100 pF capacitance value. ±10% allows 90-110 pF, ±5% allows 95-105 pF, ±2% allows 98-102 pF, and ±1% allows 99-101 pF. Tighter tolerances are suitable for precision circuits; looser tolerances are acceptable for general-purpose applications.

Q: Is the 0805CA101KAT1A with 630V rating suitable for a 50V application?

A: Yes. The 0805CA101KAT1A is a valid substitute for 50V applications. The 630V rating indicates the maximum voltage the capacitor can withstand; using it in a 50V circuit provides substantial voltage margin and does not compromise performance. This part also offers ROHS3 compliance and improved availability (1627 units in stock).

Q: Can I substitute an X7R capacitor for a C0G/NP0 capacitor?

A: X7R capacitors can be used in applications where C0G/NP0 stability is not critical. However, if the circuit design specifically requires the superior temperature stability of C0G/NP0, X7R substitution may not be appropriate. Verify circuit requirements before selecting X7R alternatives.

Q: What is the significance of Tape & Reel (TR) packaging?

A: Tape & Reel packaging is standard for automated assembly processes and high-volume production. It provides better handling, storage, and pick-and-place compatibility compared to other packaging formats. All substitute parts listed with TR packaging are suitable for automated manufacturing environments.

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