ECS-H1CC685R Equivalent & Substitute Parts

Part Overview

The ECS-H1CC685R is a 6.8 µF molded tantalum capacitor manufactured by Panasonic Electronic Components, rated for 16 V operation in a 2312 (6032 Metric) surface mount package. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement planning. The part operates across the industrial temperature range of -55°C to 125°C and is suitable for general-purpose applications requiring stable capacitance in compact form factors.

Substiute Parts

ECS-H1CC685R

Panasonic Electronic ComponentsIn Stock: 956ECS-H1CC685R Datasheet

Current PartRFQ

TAJC685K020RNJ

KYOCERA AVXIn Stock: 1331TAJC685K020RNJ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECS-H1CC685R is determined by the following critical parameters:

• Capacitance Value: Must be 6.8 µF (exact match required)
• Package / Case: Must be 2312 (6032 Metric) for mechanical and electrical compatibility
• Mounting Type: Must be Surface Mount
• Operating Temperature Range: Must support -55°C to 125°C minimum
• Type: Must be Molded Tantalum construction
• Voltage Rating: Must be equal to or greater than 16 V
• Moisture Sensitivity: Must be MSL 1 or equivalent

The TAJC685K020RNJ from KYOCERA AVX meets all substitution criteria. It maintains identical capacitance, package, and mounting specifications while providing a higher voltage rating (20 V) and improved tolerance (±10% versus ±20%), making it a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The TAJC685K020RNJ is the qualified substitute for the ECS-H1CC685R based on the following factors:

Functional Equivalence: Both parts share identical capacitance (6.8 µF), package geometry (2312/6032 Metric), and operating temperature specifications. The substitute's higher voltage rating (20 V versus 16 V) provides additional design margin without affecting circuit performance.

Product Status: The main part is obsolete, while the substitute is active in production, ensuring long-term availability and supply chain continuity.

Compliance: The TAJC685K020RNJ is ROHS3 compliant and REACH unaffected, whereas the main part is RoHS non-compliant. Selection of the substitute aligns with current regulatory requirements.

Tolerance Improvement: The substitute offers ±10% tolerance compared to the main part's ±20%, providing tighter capacitance control for applications requiring improved performance consistency.

Physical Compatibility: Maximum seated height differs by 0.004" (0.10mm), which is negligible for standard PCB assembly processes and does not affect mechanical fit or electrical performance.

Frequently Asked Questions (FAQ)

Q: Can the TAJC685K020RNJ be used as a direct replacement for the ECS-H1CC685R?

A: Yes. Both parts are 6.8 µF molded tantalum capacitors in the 2312 (6032 Metric) package with identical mounting specifications and operating temperature ranges. The substitute's higher voltage rating and improved tolerance make it functionally equivalent and superior for most applications.

Q: What is the significance of the voltage rating difference (16 V versus 20 V)?

A: The substitute's 20 V rating provides additional voltage margin. In circuits designed for 16 V operation, the higher-rated component operates at a lower stress level, which can improve reliability. No circuit redesign is required.

Q: Are there any physical compatibility concerns?

A: The maximum seated height differs by 0.004" (0.10mm). This difference is within standard PCB assembly tolerances and does not affect component placement, soldering, or electrical performance.

Q: Why is RoHS compliance important for this substitution?

A: The substitute is ROHS3 compliant while the main part is not. For applications subject to RoHS regulations or customer requirements, the substitute ensures regulatory compliance without functional compromise.

Q: Does the ±10% tolerance of the substitute affect circuit design?

A: The improved tolerance provides tighter capacitance control. For circuits originally designed with the ±20% tolerance, the substitute performs within or better than the original specification, with no negative impact.

Q: What is the ESR specification, and why is it provided for the substitute but not the main part?

A: ESR (Equivalent Series Resistance) is 2 Ohm for the substitute. This specification characterizes high-frequency performance and ripple current handling. The absence of this specification for the main part does not indicate incompatibility; it reflects data availability differences between manufacturers.

Q: Is the MSL 1 rating the same for both parts?

A: Yes. Both parts carry MSL 1 (Unlimited) moisture sensitivity, indicating they require no special moisture control during storage or handling.