08055A681JAT4P Ceramic Capacitor 680pF 50V C0G/NP0 0805 Equivalent & Substitute Parts

Part Overview

The 08055A681JAT4P is a 680 pF ceramic capacitor manufactured by KYOCERA AVX in 0805 (2012 Metric) surface mount package with 50V rated voltage and C0G/NP0 temperature coefficient. This part operates across -55°C to 125°C and is ROHS3 compliant with MSL 1 rating. The part is currently active in production with 872 pieces in stock.

Substitute parts are necessary when the original manufacturer part becomes unavailable, when higher voltage ratings or improved tolerance specifications are required for circuit reliability, or when alternative sourcing is needed to optimize supply chain management and cost efficiency.

Key Parameters

Parameter	Value
Capacitance	680 pF
Tolerance	±5%
Voltage - Rated	50V
Temperature Coefficient	C0G, NP0
Operating Temperature Range	-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)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the 08055A681JAT4P are categorized based on the following substitution criteria:

Upgrade Substitutes maintain identical capacitance (680 pF), temperature coefficient (C0G/NP0), package (0805), and operating temperature range while offering improved tolerance (±1% vs ±5%) or higher voltage ratings (100V vs 50V). These parts provide enhanced circuit performance and reliability margins.

Parametric Equivalents match all electrical specifications including capacitance, tolerance (±5%), voltage rating (50V), temperature coefficient, and package dimensions. These parts are functionally interchangeable from the same or alternative manufacturers.

Direct Equivalents from alternative manufacturers (KEMET, YAGEO, Samsung Electro-Mechanics, Murata Electronics, Vishay Vitramon) provide identical electrical and mechanical specifications with the same 0805 package footprint and C0G/NP0 characteristics. Substitution is based on matching capacitance, tolerance, voltage rating, temperature coefficient, package type, and physical dimensions.

Key parameters determining substitutability: capacitance value, tolerance, rated voltage, temperature coefficient, package type, and physical dimensions.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage - Rated	Temperature Coefficient	Package / Case	Size / Dimension	Thickness (Max)	Product Status
08055A681JAT4P	KYOCERA AVX	680 pF	±5%	50V	C0G, NP0	0805 (2012 Metric)	0.079" L x 0.049" W (2.01mm x 1.25mm)	0.037" (0.94mm)	Active
KGM21BCG1H681FT	KYOCERA AVX	680 pF	±1%	50V	C0G, NP0	0805 (2012 Metric)	0.079" L x 0.049" W (2.01mm x 1.25mm)	0.037" (0.94mm)	Active
KGM21BCG2A681FT	KYOCERA AVX	680 pF	±1%	100V	C0G, NP0	0805 (2012 Metric)	0.079" L x 0.049" W (2.01mm x 1.25mm)	0.037" (0.94mm)	Active
KGM21BCG2A681JT	KYOCERA AVX	680 pF	±5%	100V	C0G, NP0	0805 (2012 Metric)	0.079" L x 0.049" W (2.01mm x 1.25mm)	0.037" (0.94mm)	Active
KGM21BCG1H681JT	KYOCERA AVX	680 pF	±5%	50V	C0G, NP0	0805 (2012 Metric)	0.079" L x 0.049" W (2.01mm x 1.25mm)	0.037" (0.94mm)	Active
C0805C681J5GAC7800	KEMET	680 pF	±5%	50V	C0G, NP0	0805 (2012 Metric)	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.035" (0.88mm)	Active
CC0805JRNPO9BN681	YAGEO	680 pF	±5%	50V	C0G, NP0	0805 (2012 Metric)	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.024" (0.60mm)	Active
CL21C681JBCNNNC	Samsung Electro-Mechanics	680 pF	±5%	50V	C0G, NP0	0805 (2012 Metric)	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.037" (0.95mm)	Obsolete
GRM2165C1H681JA01D	Murata Electronics	680 pF	±5%	50V	C0G, NP0	0805 (2012 Metric)	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.028" (0.70mm)	Not For New Designs
VJ0805A681JXACW1BC	Vishay Vitramon	680 pF	±5%	50V	C0G, NP0	0805 (2012 Metric)	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.037" (0.95mm)	Active
C0805C681F5GAC7800	KEMET	680 pF	±1%	50V	C0G, NP0	0805 (2012 Metric)	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.035" (0.88mm)	Active

Engineering Selection Recommendations

For Direct Replacement (Active Status): KGM21BCG1H681JT (KYOCERA AVX), C0805C681J5GAC7800 (KEMET), CC0805JRNPO9BN681 (YAGEO), and VJ0805A681JXACW1BC (Vishay Vitramon) are suitable direct replacements. All maintain identical electrical specifications (680 pF, ±5%, 50V, C0G/NP0) and 0805 package footprint with active product status and ROHS3 compliance.

For Improved Tolerance (Active Status): KGM21BCG1H681FT (KYOCERA AVX) and C0805C681F5GAC7800 (KEMET) offer ±1% tolerance while maintaining 50V rating and 0805 package. Both are active products with ROHS3 compliance and provide tighter capacitance tolerance for precision applications.

For Higher Voltage Rating (Active Status): KGM21BCG2A681FT (100V, ±1%) and KGM21BCG2A681JT (100V, ±5%) from KYOCERA AVX provide increased voltage margin while maintaining 680 pF capacitance and 0805 package. Both are active products with ROHS3 compliance.

Parts to Avoid for New Designs: CL21C681JBCNNNC (Samsung Electro-Mechanics) is marked Obsolete. GRM2165C1H681JA01D (Murata Electronics) is marked Not For New Designs. These parts should not be selected for new circuit designs.

Frequently Asked Questions (FAQ)

Q: Can KGM21BCG1H681JT replace 08055A681JAT4P directly? A: Yes. KGM21BCG1H681JT is a parametric equivalent with identical capacitance (680 pF), tolerance (±5%), voltage rating (50V), temperature coefficient (C0G/NP0), and 0805 package dimensions. Both are KYOCERA AVX products with active status and ROHS3 compliance.

Q: What is the difference between ±5% and ±1% tolerance parts? A: Tolerance specifies the allowable deviation from the nominal capacitance value. ±5% tolerance allows deviation up to ±34 pF from 680 pF nominal, while ±1% tolerance restricts deviation to ±6.8 pF. Tighter tolerance (±1%) is required for precision analog circuits and frequency-critical applications.

Q: Can I use a 100V rated capacitor in place of a 50V rated capacitor? A: Yes, from an electrical standpoint. Higher voltage rating provides additional safety margin and reliability. KGM21BCG2A681FT (100V) and KGM21BCG2A681JT (100V) are suitable upgrades. However, verify that circuit board layout and component placement accommodate any minor dimensional variations.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the original 08055A681JAT4P specifications.

Q: What is the difference between C0G and NP0 designations? A: C0G and NP0 are equivalent designations for the same temperature coefficient characteristic. Both indicate stable capacitance across the -55°C to 125°C operating temperature range with minimal drift. The terms are used interchangeably by different manufacturers.

Q: Can I substitute parts from different manufacturers? A: Yes. KEMET (C0805C681J5GAC7800), YAGEO (CC0805JRNPO9BN681), Vishay Vitramon (VJ0805A681JXACW1BC), and Murata Electronics (GRM2165C1H681JA01D) all provide equivalent 680 pF, 50V, C0G/NP0 capacitors in 0805 package with identical electrical performance and ROHS3 compliance.

Q: Why is GRM2165C1H681JA01D marked "Not For New Designs"? A: Parts marked "Not For New Designs" indicate that the manufacturer is phasing out the product line. While existing inventory may be available, new circuit designs should select from active product status parts to ensure long-term supply availability and manufacturer support.

Q: Are there physical dimension differences between substitute parts? A: Minor variations exist in thickness specifications. The original 08055A681JAT4P has 0.037" (0.94mm) maximum thickness. KEMET parts specify 0.035" (0.88mm), YAGEO specifies 0.024" (0.60mm), and Murata specifies 0.028" (0.70mm). All remain within 0805 package class and are compatible with standard PCB assembly processes.

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