Equivalent & Substitute Parts for KAM21BCG1H681JM

Part Overview

The KAM21BCG1H681JM is a 680 pF ±5% 50V ceramic capacitor manufactured by KYOCERA AVX in 0805 (2012 Metric) surface mount package. This multilayer ceramic capacitor (MLCC) features C0G/NP0 temperature coefficient and is rated for automotive applications with AEC-Q200 compliance. The part is currently in active production status with 988 pieces available in stock.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when supply chain optimization is required, or when design flexibility across multiple qualified manufacturers is needed while maintaining identical electrical and mechanical performance specifications.

Substiute Parts

KAM21BCG1H681JM

KYOCERA AVXIn Stock: 1032KAM21BCG1H681JM Datasheet

Current PartRFQ

AC0805JRNPO9BN681

YAGEOIn Stock: 4696AC0805JRNPO9BN681 Datasheet

DirectRFQ

CGJ4C2C0G1H681J060AA

TDK CorporationIn Stock: 7327CGJ4C2C0G1H681J060AA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KAM21BCG1H681JM is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Capacitance value: 680 pF (exact match)
• Tolerance: ±5% (exact match)
• Voltage rating: 50V (exact match or higher)
• Temperature coefficient: C0G/NP0 (exact match for stability)
• Operating temperature range: -55°C to 125°C (exact match)

Mechanical Equivalence Requirements:

• Package / Case: 0805 (2012 Metric) (exact match for PCB footprint compatibility)
• Mounting type: Surface Mount, MLCC (exact match)

Compliance & Certification Requirements:

• AEC-Q200 automotive rating (required for automotive applications)
• RoHS3 compliance (required for environmental standards)
• MSL 1 rating (required for unlimited shelf life)

All substitute parts listed meet these criteria without exception. Substitution is valid based on electrical performance, mechanical fit, and regulatory compliance only. Physical dimensions may vary within manufacturing tolerances without affecting circuit performance or PCB assembly compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (Active Status): The KAM21BCG1H681JM remains the preferred choice when available due to active production status and established supply chain qualification. The AC0805JRNPO9BN681 (YAGEO) is the recommended first substitute, offering identical electrical specifications, active product status, and higher current inventory (4612 pieces). Both parts are packaged in Tape & Reel format suitable for automated assembly.

Secondary Selection (Obsolete Status): The CGJ4C2C0G1H681J060AA (TDK) meets all electrical and mechanical equivalence criteria and maintains full AEC-Q200 and RoHS3 compliance. However, this part carries obsolete product status, indicating discontinued production. This part is suitable only when existing inventory is available and long-term supply is not required. The Cut Tape packaging requires manual handling during assembly operations.

Compliance Verification: All three parts satisfy automotive application requirements through AEC-Q200 certification, environmental compliance through RoHS3 status, and unlimited shelf life through MSL 1 rating. Selection between active and obsolete parts depends on project timeline and supply chain strategy rather than technical performance.

Frequently Asked Questions (FAQ)

Q: Can AC0805JRNPO9BN681 be used as a direct replacement for KAM21BCG1H681JM?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical capacitance (680 pF), tolerance (±5%), voltage rating (50V), temperature coefficient (C0G/NP0), operating temperature range (-55°C to 125°C), package (0805 2012 Metric), and automotive certifications (AEC-Q200). Physical dimensions are within manufacturing tolerances (2.00mm vs 2.01mm length; 0.70mm vs 0.94mm thickness), and both are MSL 1 rated. PCB footprint compatibility is confirmed.

Q: Why is CGJ4C2C0G1H681J060AA listed as obsolete?

A: CGJ4C2C0G1H681J060AA carries obsolete product status, indicating TDK Corporation has discontinued active production. This designation does not affect electrical performance or compliance certifications. Obsolete parts remain suitable for applications where existing inventory is available and future replenishment is not required. New designs should prioritize active-status alternatives.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel packaging supplies components on continuous carrier tape wound on reels, suitable for automated pick-and-place assembly equipment. Cut Tape packaging supplies components on cut segments of carrier tape, requiring manual handling and placement. KAM21BCG1H681JM and AC0805JRNPO9BN681 are supplied in Tape & Reel format. CGJ4C2C0G1H681J060AA is supplied in Cut Tape format.

Q: Are there thickness differences that affect PCB assembly?

A: Physical thickness varies: KAM21BCG1H681JM (0.94mm), AC0805JRNPO9BN681 (0.70mm), and CGJ4C2C0G1H681J060AA (0.75mm). These variations fall within standard 0805 package tolerances and do not affect PCB assembly, solder reflow profiles, or circuit performance. All parts are compatible with standard surface mount assembly processes.

Q: Do all substitute parts maintain the same electrical performance?

A: Yes. All listed parts are electrically identical across all specified parameters: 680 pF capacitance, ±5% tolerance, 50V voltage rating, C0G/NP0 temperature coefficient, and -55°C to 125°C operating range. Electrical performance in circuit applications is equivalent regardless of manufacturer selection.

Q: What certifications apply to all substitute parts?

A: All three parts carry AEC-Q200 automotive qualification, RoHS3 environmental compliance, and MSL 1 (unlimited) moisture sensitivity rating. These certifications confirm suitability for automotive applications and compliance with environmental regulations. REACH status is unaffected for all parts.