HT06CW684KN Equivalent & Substitute Parts

Part Overview

The HT06CW684KN is a 0.68 µF ceramic capacitor rated at 100V with X7R temperature coefficient, manufactured by KEMET. This radial through-hole component is designed for general-purpose applications requiring high-temperature operation across -55°C to 200°C. The part is currently obsolete, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility within specified parameters.

Substiute Parts

HT06CW684KN

KEMETIn Stock: 862HT06CW684KN Datasheet

Current PartRFQ

C340C684K1R5TA

KEMETIn Stock: 1457C340C684K1R5TA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of HT06CW684KN is determined by strict equivalence across seven critical parameters: capacitance value, voltage rating, tolerance specification, temperature coefficient classification, operating temperature range, mounting configuration, and lead spacing. These parameters define the electrical function and physical compatibility of the component within its intended circuit application.

The substitute part C340C684K1R5TA maintains electrical equivalence through identical capacitance (0.68 µF), voltage rating (100V), tolerance (±10%), temperature coefficient (X7R), and lead spacing (0.200"). Both parts are manufactured by KEMET and classified as radial through-hole components. However, the operating temperature range differs: the substitute operates from -55°C to 125°C, which does not fully cover the original part's -55°C to 200°C specification. Physical dimensions and height also vary between the two parts.

Parameter Comparison

Engineering Selection Recommendations

C340C684K1R5TA serves as an electrical equivalent for applications where the operating temperature range does not exceed 125°C. This substitute maintains all critical electrical parameters: capacitance, voltage rating, tolerance, and temperature coefficient. The part is currently in active production status with ROHS3 compliance certification, ensuring long-term availability and regulatory alignment.

For applications requiring sustained operation above 125°C, this substitute is not suitable due to the reduced upper temperature limit. The increased seated height (0.460" versus 0.300") requires verification of PCB clearance and component placement constraints. Dimensional variations in length and width are minor and typically do not affect standard through-hole footprints with 0.200" lead spacing.

Selection of C340C684K1R5TA is appropriate for general-purpose applications operating within the -55°C to 125°C range where ROHS3 compliance is required or preferred.

Frequently Asked Questions (FAQ)

Q: Can C340C684K1R5TA replace HT06CW684KN in all applications?

A: No. The substitute operates to 125°C maximum, while the original part operates to 200°C. Substitution is valid only for applications where the maximum operating temperature does not exceed 125°C.

Q: Are the electrical specifications identical between these parts?

A: Yes. Capacitance (0.68 µF), voltage rating (100V), tolerance (±10%), temperature coefficient (X7R), and lead spacing (0.200") are identical. Both parts are manufactured by KEMET.

Q: Will the increased height of C340C684K1R5TA cause PCB compatibility issues?

A: The seated height increases from 0.300" to 0.460". Verify available vertical clearance on the PCB and confirm that component placement does not conflict with adjacent components or enclosure constraints.

Q: What is the significance of ROHS3 compliance on the substitute part?

A: ROHS3 compliance indicates the substitute meets current environmental and regulatory standards for restricted hazardous substances. This certification supports long-term supply chain viability and regulatory compliance in manufacturing environments subject to ROHS requirements.

Q: Are there any lead style differences between these parts?

A: Yes. HT06CW684KN has straight leads, while C340C684K1R5TA has formed leads. This difference does not affect electrical function but may influence insertion force and handling during assembly.

Q: Is the substitute part currently available?

A: Yes. C340C684K1R5TA is in active production status with 1379 pieces in stock, compared to the obsolete HT06CW684KN with 837 pieces remaining.