08055C681KAT2M Equivalent & Substitute Parts

Part Overview

The 08055C681KAT2M is a 680 pF ±10% 50V ceramic capacitor manufactured by KYOCERA AVX with X7R temperature coefficient in 0805 (2012 Metric) surface mount package. This component is classified as Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). The part is suitable 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 capacitance value, package form factor, and electrical ratings while allowing variations in tolerance, voltage rating, and temperature coefficient characteristics.

Key Parameters

Parameter	Value
Capacitance	680 pF
Tolerance	±10%
Voltage Rating	50V
Temperature Coefficient	X7R
Package / Case	0805 (2012 Metric)
Mounting Type	Surface Mount, MLCC
Operating Temperature	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 08055C681KAT2M is determined by the following criteria:

Primary Matching Parameters (Required):

Capacitance: 680 pF (exact match)
Package / Case: 0805 (2012 Metric) (exact match)
Mounting Type: Surface Mount, MLCC (exact match)
Operating Temperature Range: -55°C ~ 125°C (exact match)

Secondary Allowable Variations:

Tolerance: ±1%, ±5%, or ±10% (tighter tolerance acceptable)
Voltage Rating: 50V, 100V, or 200V (equal or higher voltage acceptable)
Temperature Coefficient: X7R or C0G/NP0 (both acceptable for general purpose applications)
Manufacturer: KYOCERA AVX, KEMET, or YAGEO (qualified manufacturers)
RoHS Status: ROHS3 Compliant (required)
MSL Rating: 1 (Unlimited) (required)

Substitute parts are grouped into two categories: Upgrade variants from KYOCERA AVX offering improved tolerance or higher voltage ratings, and Direct equivalents from alternative manufacturers (KEMET, YAGEO) providing identical electrical specifications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Temp Coeff	Package	Inventory	RoHS
08055C681KAT2M	KYOCERA AVX	680 pF	±10%	50V	X7R	0805	903 Pcs	ROHS3
KGM21BCG1H681FT	KYOCERA AVX	680 pF	±1%	50V	C0G/NP0	0805	12776 Pcs	ROHS3
KGM21BCG1H681KT	KYOCERA AVX	680 pF	±10%	50V	C0G/NP0	0805	4713 Pcs	ROHS3
KGM21BCG2A681FT	KYOCERA AVX	680 pF	±1%	100V	C0G/NP0	0805	28584 Pcs	ROHS3
KGM21NR71H681JT	KYOCERA AVX	680 pF	±5%	50V	X7R	0805	15529 Pcs	ROHS3
KGM21NR71H681KT	KYOCERA AVX	680 pF	±10%	50V	X7R	0805	23087 Pcs	ROHS3
KGM21NR72A681JT	KYOCERA AVX	680 pF	±5%	100V	X7R	0805	7773 Pcs	ROHS3
KGM21NR72A681KT	KYOCERA AVX	680 pF	±10%	100V	X7R	0805	28832 Pcs	ROHS3
KGM21NR72D681JT	KYOCERA AVX	680 pF	±5%	200V	X7R	0805	1548 Pcs	ROHS3
C0805C681K5RAC7800	KEMET	680 pF	±10%	50V	X7R	0805	28162 Pcs	ROHS3
CC0805KRX7R9BB681	YAGEO	680 pF	±10%	50V	X7R	0805	4400 Pcs	ROHS3

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, meeting the regulatory requirements of the original 08055C681KAT2M. Selection between substitute options depends on application-specific requirements:

For X7R Temperature Coefficient Requirement: KGM21NR71H681KT (KYOCERA AVX), C0805C681K5RAC7800 (KEMET), and CC0805KRX7R9BB681 (YAGEO) provide direct electrical equivalence with ±10% tolerance and 50V rating. These parts are functionally interchangeable with the original component.

For Improved Tolerance: KGM21NR71H681JT offers ±5% tolerance while maintaining X7R characteristics and 50V rating, providing tighter capacitance control within the same voltage class.

For Higher Voltage Margin: KGM21NR72A681KT and KGM21NR72A681JT provide 100V rating with X7R temperature coefficient, suitable for applications requiring increased voltage headroom. KGM21NR72D681JT extends to 200V for demanding high-voltage applications.

For C0G/NP0 Temperature Coefficient: KGM21BCG1H681FT and KGM21BCG1H681KT offer superior temperature stability with C0G/NP0 characteristics, with KGM21BCG2A681FT providing both improved tolerance (±1%) and 100V rating.

For Inventory Availability: KGM21BCG2A681FT (28584 Pcs), KGM21NR72A681KT (28832 Pcs), and C0805C681K5RAC7800 (28162 Pcs) offer highest stock levels for immediate procurement.

Frequently Asked Questions (FAQ)

Q: Can KGM21NR71H681KT replace 08055C681KAT2M directly?

A: Yes. Both parts share identical capacitance (680 pF), tolerance (±10%), voltage rating (50V), temperature coefficient (X7R), package (0805), and operating temperature range (-55°C to 125°C). They are direct functional equivalents.

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

A: X7R provides ±15% capacitance change across the operating temperature range, suitable for general purpose applications. C0G/NP0 provides ±30 ppm/°C stability, offering superior temperature stability for precision circuits. Both are acceptable substitutes based on application requirements.

Q: Can I use a 100V rated part instead of 50V?

A: Yes. Higher voltage ratings provide increased safety margin and are electrically compatible. KGM21NR72A681KT (100V, ±10%, X7R) and KGM21BCG2A681FT (100V, ±1%, C0G/NP0) are suitable upgrades for applications where voltage headroom is beneficial.

Q: What does ±1% tolerance mean compared to ±10%?

A: ±1% tolerance ensures capacitance remains within 1% of the nominal 680 pF value (673.2 pF to 686.8 pF), while ±10% allows variation from 612 pF to 748 pF. Tighter tolerance is beneficial for precision filtering and timing circuits.

Q: Are KEMET and YAGEO parts compatible with KYOCERA AVX specifications?

A: Yes. C0805C681K5RAC7800 (KEMET) and CC0805KRX7R9BB681 (YAGEO) match all critical parameters: 680 pF capacitance, ±10% tolerance, 50V rating, X7R temperature coefficient, 0805 package, and ROHS3 compliance. They are direct equivalents from qualified manufacturers.

Q: What is MSL 1 (Unlimited) moisture sensitivity?

A: MSL 1 indicates the component requires no special moisture control during storage and handling. All listed parts carry MSL 1 rating, eliminating moisture-related procurement or storage constraints.

Q: Can I mix different manufacturers in the same circuit board?

A: Yes. All listed parts meet identical electrical specifications and compliance requirements. Mixed sourcing from KYOCERA AVX, KEMET, and YAGEO is acceptable for production flexibility and supply chain resilience.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message