08055C683KAT4P Ceramic Capacitor 0.068µF 50V X7R 0805 Equivalent & Substitute Parts

Part Overview

The 08055C683KAT4P is a surface-mount multilayer ceramic capacitor (MLCC) manufactured by KYOCERA AVX with a capacitance of 0.068 µF, rated voltage of 50V, and X7R temperature coefficient. This component is classified as Active and suitable for general-purpose applications including bypass and decoupling circuits. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and package compatibility within the 0805 (2012 Metric) form factor.

Key Parameters

Parameter	Value
Capacitance	0.068 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
Size	0.079" L × 0.049" W (2.01mm × 1.25mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

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

Primary Substitution Criteria (Must Match):

Capacitance: 0.068 µF
Voltage Rating: 50V minimum
Temperature Coefficient: X7R
Package / Case: 0805 (2012 Metric)
Mounting Type: Surface Mount, MLCC
Operating Temperature Range: -55°C to 125°C
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1

Secondary Substitution Criteria (Allowable Variations):

Tolerance: ±10% or tighter (±5% acceptable as upgrade)
Voltage Rating: 50V or higher (100V acceptable as upgrade)
Thickness: Minor variations within mechanical tolerance
Packaging Format: Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel®

Substitution Categories:

Upgrade Parts: Same base specifications with improved tolerance (±5%), higher voltage rating (100V), or enhanced automotive qualification (AEC-Q200)
Direct Equivalents: Identical electrical and mechanical specifications from alternative manufacturers

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Temp Coeff	Package	Thickness (Max)	Product Status	Packaging
08055C683KAT4P	KYOCERA AVX	0.068 µF	±10%	50V	X7R	0805	0.037" (0.94mm)	Active	Bulk
KAM21BR71H683KT	KYOCERA AVX	0.068 µF	±10%	50V	X7R	0805	0.037" (0.94mm)	Active	Tape & Reel
KGM21NR71H683JT	KYOCERA AVX	0.068 µF	±5%	50V	X7R	0805	0.039" (1.00mm)	Active	Tape & Reel
KGM21NR71H683KT	KYOCERA AVX	0.068 µF	±10%	50V	X7R	0805	0.039" (1.00mm)	Active	Tape & Reel
0805B683K500CT	Walsin Technology Corporation	0.068 µF	±10%	50V	X7R	0805	0.035" (0.90mm)	Active	Tape & Reel
C0805C683K5RAC7800	KEMET	0.068 µF	±10%	50V	X7R	0805	0.039" (1.00mm)	Active	Tape & Reel
CC0805KRX7R9BB683	YAGEO	0.068 µF	±10%	50V	X7R	0805	0.037" (0.95mm)	Active	Cut Tape & Digi-Reel
VJ0805Y683KXACW1BC	Vishay Vitramon	0.068 µF	±10%	50V	X7R	0805	0.035" (0.90mm)	Active	Tape & Reel
C0805C683J5RAC7800	KEMET	0.068 µF	±5%	50V	X7R	0805	0.039" (1.00mm)	Active	Tape & Reel
C0805C683K1RAC7800	KEMET	0.068 µF	±10%	100V	X7R	0805	0.043" (1.10mm)	Active	Tape & Reel
C2012X7R2A683K085AA	TDK Corporation	0.068 µF	±10%	100V	X7R	0805	0.041" (1.05mm)	Not For New Designs	Tape & Reel

Engineering Selection Recommendations

Direct Equivalents (Same Electrical & Mechanical Specifications):

Parts KAM21BR71H683KT, KGM21NR71H683KT, 0805B683K500CT, C0805C683K5RAC7800, CC0805KRX7R9BB683, and VJ0805Y683KXACW1BC are direct functional equivalents to 08055C683KAT4P. All maintain 0.068 µF capacitance, ±10% tolerance, 50V rating, X7R temperature coefficient, and 0805 package format. These parts are suitable for direct substitution in existing designs. Thickness variations (0.035" to 0.039") remain within standard PCB assembly tolerances.

Upgrade Parts (Enhanced Specifications):

KGM21NR71H683JT and C0805C683J5RAC7800 offer tighter tolerance (±5%) while maintaining all other primary specifications. These upgrades provide improved capacitance accuracy for applications requiring stricter tolerance control.

C0805C683K1RAC7800 provides 100V voltage rating with identical capacitance and tolerance. This upgrade is suitable for applications requiring higher voltage margin or operating in elevated voltage environments while maintaining the same 0805 footprint.

Obsolescence Consideration:

C2012X7R2A683K085AA carries "Not For New Designs" status and should not be selected for new product development, though it remains functionally compatible for legacy system maintenance.

Automotive Applications:

KAM21BR71H683KT includes AEC-Q200 automotive qualification, making it the preferred selection for automotive-grade applications requiring enhanced reliability standards.

Frequently Asked Questions (FAQ)

Q: Can I substitute 08055C683KAT4P with any of the listed parts?

A: Yes, all listed parts with "Active" product status and matching 0.068 µF / 50V / X7R / 0805 specifications are functionally equivalent. Verify packaging format (Tape & Reel vs. Cut Tape) matches your procurement requirements.

Q: What is the difference between ±10% and ±5% tolerance parts?

A: Tolerance defines the allowable capacitance deviation from the nominal 0.068 µF value. ±10% allows 0.0612 µF to 0.0748 µF; ±5% allows 0.0646 µF to 0.0714 µF. Select ±5% parts for applications requiring tighter capacitance control.

Q: Can I use the 100V rated parts (C0805C683K1RAC7800, C2012X7R2A683K085AA) as substitutes?

A: Yes. Higher voltage rating is a safe upgrade. These parts maintain identical capacitance and tolerance while providing additional voltage margin. Verify PCB layout accommodates the slightly increased thickness (0.043" to 0.041" vs. 0.037").

Q: Does packaging format (Tape & Reel vs. Cut Tape) affect electrical performance?

A: No. Packaging format affects only procurement and assembly logistics, not electrical or mechanical performance. Select based on your manufacturing process requirements.

Q: Why is C2012X7R2A683K085AA marked "Not For New Designs"?

A: This designation indicates the manufacturer has discontinued active development and recommends alternative parts for new product designs. It remains available for legacy system support but should not be selected for new applications.

Q: Are all listed parts RoHS3 compliant?

A: Yes. All parts listed carry ROHS3 Compliant status and meet environmental compliance requirements.

Q: What is Moisture Sensitivity Level (MSL) 1?

A: MSL 1 indicates unlimited shelf life without moisture baking requirements. These parts can be stored and handled without special moisture control procedures.

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