OP43B682K101CT Equivalent & Substitute Parts

Part Overview

The OP43B682K101CT is a ceramic multilayer capacitor (MLCC) manufactured by Walsin Technology Corporation in 1812 package format with X7R dielectric and ±10% tolerance. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing production and maintenance applications. The part maintains ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), making it suitable for general-purpose ceramic capacitor applications across industrial and commercial electronics.

Substiute Parts

OP43B682K101CT

Walsin Technology CorporationIn Stock: 1055OP43B682K101CT Datasheet

Current PartRFQ

C0805F682K1RAC7800

KEMETIn Stock: 809C0805F682K1RAC7800 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OP43B682K101CT is determined by the following critical parameters:

• Capacitance Value: 6800 pF (68 nF)
• Tolerance: ±10%
• Dielectric Type: X7R
• Voltage Rating: 100V
• Package Format: Surface mount ceramic capacitor
• Mounting Type: SMD (Surface Mount Device)
• Compliance: ROHS3 Compliant, MSL 1 rating

The identified substitute C0805F682K1RAC7800 maintains electrical equivalence through matching capacitance, tolerance, dielectric material, and voltage specifications. Package format differs (0805 versus 1812), which represents a dimensional change that must be evaluated within specific circuit layout constraints.

Parameter Comparison

Engineering Selection Recommendations

The C0805F682K1RAC7800 substitute provides electrical equivalence to the obsolete OP43B682K101CT across all critical functional parameters: capacitance value, tolerance, dielectric specification, and voltage rating. Both components maintain identical operating temperature ranges (-55°C to 125°C) and comply with ROHS3 standards with MSL 1 moisture sensitivity ratings.

The primary distinction is product status: the substitute is currently active in production, ensuring long-term availability and supply chain continuity. The package format change from 1812 to 0805 represents a dimensional reduction that requires circuit board layout evaluation. The 0805 package (2.00mm × 1.25mm) is substantially smaller than the 1812 package (4.5mm × 3.2mm), which may necessitate PCB redesign depending on available board space and thermal management requirements.

Both components are classified under identical HTSUS and ECCN codes, confirming regulatory and trade compliance equivalence.

Frequently Asked Questions (FAQ)

Q: Can the C0805F682K1RAC7800 directly replace the OP43B682K101CT without circuit modification?

A: Electrical substitution is valid based on matching capacitance (6800 pF), tolerance (±10%), voltage rating (100V), and dielectric type (X7R). Physical substitution requires PCB layout modification due to package format change from 1812 to 0805. Footprint redesign and component placement adjustment are necessary.

Q: What is the significance of the X7R dielectric specification?

A: X7R dielectric provides stable capacitance across the operating temperature range (-55°C to 125°C) with minimal variation. This specification is identical between the main part and substitute, ensuring equivalent temperature performance characteristics.

Q: Are there compliance or regulatory differences between these parts?

A: Both components maintain ROHS3 compliance, EAR99 ECCN classification, and MSL 1 moisture sensitivity ratings. No regulatory or compliance barriers exist for substitution.

Q: Why is the substitute part listed as "Active" while the main part is "Obsolete"?

A: The OP43B682K101CT has been discontinued by Walsin Technology Corporation. The C0805F682K1RAC7800 remains in active production by KEMET, providing continued availability and supply chain support for equivalent 6800 pF, 100V, X7R ceramic capacitor applications.

Q: Does package size reduction affect electrical performance?

A: Electrical performance parameters (capacitance, tolerance, voltage rating, temperature coefficient) remain identical. Package size reduction may affect thermal dissipation characteristics and board-level parasitic inductance, which should be evaluated within specific circuit application requirements.