THJC686M006RJN Equivalent & Substitute Parts

Part Overview

The THJC686M006RJN is a 68 µF molded tantalum capacitor manufactured by KYOCERA AVX, rated for 6.3 V operation in a 2312 (6032 Metric) surface mount package. This component is designed for automotive applications and maintains active product status. Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part specifications, enabling component interchangeability in circuit designs where the primary part becomes unavailable or inventory constraints require alternative sourcing.

Substiute Parts

THJC686M006RJN

KYOCERA AVXIn Stock: 2308THJC686M006RJN Datasheet

Current PartRFQ

T499C686K006ATE1K2

KEMETIn Stock: 1052T499C686K006ATE1K2 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the THJC686M006RJN is determined by strict alignment of the following parameters:

• Capacitance value: 68 µF (exact match required)
• Rated voltage: 6.3 V (exact match required)
• Package / Case: 2312 (6032 Metric) (exact match required)
• Type: Molded Tantalum (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Operating Temperature Range: -55°C ~ 175°C (minimum required)
• RoHS Status: ROHS3 Compliant (required for regulatory compliance)
• Moisture Sensitivity Level: 1 (Unlimited) (required for handling compatibility)
• AEC-Q200 Automotive Rating (required for automotive applications)

The substitute part T499C686K006ATE1K2 meets all mandatory substitution criteria. Variations in tolerance and ESR are permissible within the electrical performance envelope of the application circuit.

Parameter Comparison

Engineering Selection Recommendations

Both the THJC686M006RJN and T499C686K006ATE1K2 maintain active product status and carry AEC-Q200 automotive qualification. Both components are ROHS3 compliant and feature MSL 1 (Unlimited) moisture sensitivity ratings, eliminating handling and storage constraints. The substitute part offers improved tolerance performance (±10% versus ±20%) and lower ESR (1.2 Ohm versus 1.5 Ohm @ 100kHz), which may provide marginal performance benefits in ripple current and transient response applications. Physical footprint and thermal operating range are identical, ensuring direct PCB compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can T499C686K006ATE1K2 be used as a direct replacement for THJC686M006RJN?

A: Yes. Both parts share identical capacitance (68 µF), rated voltage (6.3 V), package (2312 / 6032 Metric), operating temperature range (-55°C ~ 175°C), and automotive qualification (AEC-Q200). Physical dimensions and mounting type are identical, enabling direct PCB substitution without layout modification.

Q: What are the differences between these parts?

A: The substitute part features tighter capacitance tolerance (±10% versus ±20%) and lower ESR (1.2 Ohm versus 1.5 Ohm @ 100kHz). These differences represent performance improvements rather than compatibility issues. Both manufacturers are different (KEMET versus KYOCERA AVX), but electrical and mechanical specifications align within substitution criteria.

Q: Are there any handling or storage differences?

A: No. Both parts carry MSL 1 (Unlimited) moisture sensitivity ratings, indicating identical handling and storage requirements with no moisture bake-out procedures required.

Q: Will this substitution affect circuit performance?

A: The lower ESR of the substitute part may reduce impedance in high-frequency applications, potentially improving transient response. The tighter tolerance may reduce capacitance variation across production batches. These represent neutral to positive performance characteristics for most applications.

Q: Are both parts suitable for automotive applications?

A: Yes. Both parts carry AEC-Q200 automotive qualification and ROHS3 compliance, meeting automotive industry standards for reliability and environmental compliance.