08051C331KAJ2A Ceramic Capacitor 330pF 100V X7R 0805 Equivalent & Substitute Parts

Part Overview

The 08051C331KAJ2A is a 330 pF ceramic capacitor manufactured by KYOCERA AVX with 100V rated voltage and X7R temperature coefficient in 0805 (2012 Metric) surface mount package. This part is active in production and widely used in general-purpose applications requiring stable capacitance across operating temperature ranges of -55°C to 125°C. Equivalent and substitute parts are identified based on matching electrical specifications (capacitance, voltage rating, tolerance) and mechanical compatibility (package size, mounting type, form factor).

Key Parameters

Parameter	Value
Capacitance	330 pF
Tolerance	±10%
Voltage Rating	100V
Temperature Coefficient	X7R
Operating Temperature Range	-55°C to 125°C
Package / Case	0805 (2012 Metric)
Mounting Type	Surface Mount, MLCC
Size	0.079" L x 0.049" W (2.00mm x 1.25mm)
Thickness	0.037" (0.94mm)
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria applied strictly to the provided data:

Primary Substitution Criteria:

Capacitance value: 330 pF (exact match required)
Voltage rating: 100V minimum (equal or higher acceptable)
Package / Case: 0805 (2012 Metric) (exact match required)
Mounting type: Surface Mount, MLCC (exact match required)
Operating temperature range: -55°C to 125°C minimum (equal or wider acceptable)
Moisture sensitivity level: 1 (Unlimited) (exact match required)

Secondary Substitution Criteria:

Tolerance: ±10% or tighter acceptable
Temperature coefficient: X7R or C0G/NP0 acceptable (both provide stable performance across operating range)
RoHS compliance status and REACH compliance status noted for regulatory requirements

Substitute parts are grouped into three categories: Upgrade parts from KYOCERA AVX (improved packaging or compliance), Direct equivalents from alternative manufacturers (KEMET, YAGEO), and Upgrade parts from alternative manufacturers (Knowles Novacap, Knowles Syfer) with enhanced specifications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Temp Coeff	Package	Size (mm)	Thickness (mm)	RoHS Status	MSL
08051C331KAJ2A	KYOCERA AVX	330 pF	±10%	100V	X7R	0805	2.00 x 1.25	0.94	Non-compliant	1
08051C331K4T2A	KYOCERA AVX	330 pF	±10%	100V	X7R	0805	2.00 x 1.25	0.94	ROHS3 Compliant	1
KGM21BCG2A331FT	KYOCERA AVX	330 pF	±1%	100V	C0G/NP0	0805	2.01 x 1.25	0.94	ROHS3 Compliant	1
KGM21BCG2A331GT	KYOCERA AVX	330 pF	±2%	100V	C0G/NP0	0805	2.01 x 1.25	0.94	ROHS3 Compliant	1
KGM21BCG2A331KT	KYOCERA AVX	330 pF	±10%	100V	C0G/NP0	0805	2.01 x 1.25	0.94	ROHS3 Compliant	1
KGM21NR72A331KT	KYOCERA AVX	330 pF	±10%	100V	X7R	0805	2.01 x 1.25	1.00	ROHS3 Compliant	1
C0805C331K1RAC7800	KEMET	330 pF	±10%	100V	X7R	0805	2.00 x 1.25	0.88	ROHS3 Compliant	1
CC0805KRX7R0BB331	YAGEO	330 pF	±10%	100V	X7R	0805	2.00 x 1.25	0.70	ROHS3 Compliant	1
0805D331J101KHT	Knowles Novacap	330 pF	±5%	100V	C0G/NP0	0805	2.03 x 1.27	1.37	ROHS3 Compliant	1
0805J1000331JCT	Knowles Syfer	330 pF	±5%	100V	C0G/NP0	0805	2.00 x 1.25	1.30	ROHS3 Compliant	1
0805N331K501NT	Knowles Novacap	330 pF	±10%	500V	C0G/NP0	0805	2.03 x 1.27	1.37	ROHS3 Compliant	1

Engineering Selection Recommendations

KYOCERA AVX Upgrade Path (Same Manufacturer):

08051C331K4T2A: Direct upgrade with ROHS3 compliance and Tape & Reel packaging. Identical electrical and mechanical specifications to the original part. Recommended for new designs requiring RoHS compliance.
KGM21NR72A331KT: X7R temperature coefficient variant with ROHS3 compliance and highest inventory availability (57,020 pcs). Thickness increases to 1.00mm. Suitable for applications where RoHS compliance is mandatory.
KGM21BCG2A331KT: C0G/NP0 temperature coefficient with tighter tolerance (±10%) and ROHS3 compliance. Provides superior temperature stability compared to X7R. Recommended for precision applications.

Cross-Manufacturer Direct Equivalents:

C0805C331K1RAC7800 (KEMET): Identical electrical specifications with ROHS3 compliance. Thickness 0.88mm. Suitable for space-constrained designs.
CC0805KRX7R0BB331 (YAGEO): Identical electrical specifications with ROHS3 compliance. Lowest thickness at 0.70mm. Recommended for high-density PCB layouts.

Enhanced Specification Alternatives:

0805J1000331JCT (Knowles Syfer): C0G/NP0 with ±5% tolerance and ROHS3 compliance. Maintains original package dimensions. Recommended for applications requiring tighter capacitance tolerance.
0805N331K501NT (Knowles Novacap): 500V rated voltage with C0G/NP0 coefficient and ROHS3 compliance. Suitable for applications requiring higher voltage margin or future design upgrades.

All substitute parts maintain MSL 1 (Unlimited) moisture sensitivity and are compatible with standard surface mount assembly processes.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 08051C331KAJ2A with a part having different tolerance? A: Yes. Tolerance values of ±1%, ±2%, ±5%, or ±10% are all acceptable substitutes. Tighter tolerances (±1%, ±2%, ±5%) provide better capacitance accuracy and are suitable for precision applications. The original ±10% tolerance is adequate for general-purpose applications.

Q: What is the difference between X7R and C0G/NP0 temperature coefficients? A: X7R provides ±15% capacitance change across the -55°C to 125°C operating range. C0G/NP0 provides superior stability with minimal capacitance change across temperature. Both are acceptable substitutes; C0G/NP0 is preferred for applications requiring stable capacitance performance across temperature extremes.

Q: Are all substitute parts RoHS compliant? A: The original 08051C331KAJ2A is RoHS non-compliant. All listed substitute parts are ROHS3 compliant, meeting current regulatory requirements. For new designs, ROHS3 compliant parts are recommended.

Q: Can I use a 500V rated capacitor (0805N331K501NT) in place of the 100V rated original? A: Yes. Higher voltage ratings are acceptable substitutes. The 500V rated part provides additional voltage margin and is suitable for applications where future design upgrades or higher voltage tolerance is required. No electrical performance degradation occurs when using higher voltage ratings in 100V applications.

Q: What are the physical dimension differences between substitute parts? A: Most substitute parts maintain the 0805 (2012 Metric) package with dimensions of 2.00mm to 2.03mm length and 1.25mm to 1.27mm width. Thickness varies from 0.70mm to 1.37mm. Verify PCB layout clearance before selecting parts with thickness exceeding 1.00mm.

Q: Which substitute part has the highest inventory availability? A: KGM21NR72A331KT from KYOCERA AVX has the highest inventory at 57,020 pieces. This part is suitable for high-volume production requirements.

Q: Are all substitute parts suitable for automotive applications? A: The 08051C331K4T2A is rated for automotive applications (AEC-Q200). Other substitute parts are rated for general-purpose applications. Verify automotive qualification requirements before selecting parts for automotive designs.

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