HT55CW183JC Equivalent & Substitute Parts Reference

Part Overview

The HT55CW183JC is a 0.018 µF ceramic capacitor rated for 100V with X7R temperature coefficient, manufactured by KEMET. This component is designed for general-purpose applications requiring high-temperature operation across the range of -55°C to 200°C. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives from active manufacturers to maintain design continuity and ensure supply chain availability.

Substiute Parts

HT55CW183JC

KEMETIn Stock: 884HT55CW183JC Datasheet

Current PartRFQ

K183K15X7RH53L2

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 1106K183K15X7RH53L2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HT55CW183JC is determined by the following mandatory parameters:

Critical Parameters (Must Match):

• Capacitance value: 0.018 µF
• Voltage rating: 100V minimum
• Temperature coefficient: X7R
• Mounting type: Through Hole Radial

Compatible Variation Parameters:

• Tolerance: ±5% to ±10% acceptable (wider tolerance acceptable for general-purpose applications)
• Operating temperature range: Minimum -55°C to +125°C acceptable (lower maximum temperature acceptable if application does not require full 200°C range)
• Lead spacing: Minor variations acceptable if PCB footprint permits
• Physical dimensions: Variations acceptable within standard radial package envelope

The substitute part K183K15X7RH53L2 meets all critical parameters and is therefore classified as a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: K183K15X7RH53L2

The K183K15X7RH53L2 from Vishay Beyschlag/Draloric/BC Components is the qualified equivalent for HT55CW183JC replacement. Selection rationale:

1. Electrical Equivalence: Identical capacitance (0.018 µF), voltage rating (100V), and temperature coefficient (X7R) ensure functional compatibility in circuit operation.

2. Tolerance Consideration: The substitute's ±10% tolerance is wider than the original ±5%. This is acceptable for general-purpose applications; however, circuits requiring tighter capacitance tolerance must be evaluated individually.

3. Temperature Range Limitation: The substitute operates to 125°C maximum versus the original 200°C. Applications requiring operation above 125°C cannot use this substitute without thermal analysis and verification.

4. Lead Spacing Difference: The substitute has 0.098" (2.50mm) lead spacing versus the original 0.200" (5.08mm). PCB footprint compatibility must be verified before implementation. Physical board modification may be required.

5. Compliance Status: The substitute is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The original part's compliance status is not specified.

6. Supply Availability: The substitute is in active production with 1007 pieces in stock, ensuring long-term availability compared to the obsolete original.

Frequently Asked Questions (FAQ)

Q: Can K183K15X7RH53L2 be used as a direct drop-in replacement for HT55CW183JC?

A: Electrical substitution is valid. However, physical installation requires verification. The lead spacing differs (0.098" vs 0.200"), so PCB footprint compatibility must be confirmed. If the original PCB was designed for 0.200" spacing, the substitute cannot be installed without board modification.

Q: What is the impact of the ±10% tolerance on circuit performance?

A: For general-purpose applications, ±10% tolerance is acceptable. Circuits with tight capacitance requirements (such as precision timing or filtering applications) must be analyzed to determine if the wider tolerance affects performance within acceptable limits.

Q: Why does the substitute have a lower maximum operating temperature?

A: The substitute operates to 125°C while the original operates to 200°C. If your application requires sustained operation above 125°C, this substitute is not suitable. Verify your application's actual thermal requirements before selection.

Q: Are there any compliance differences between the parts?

A: The substitute is ROHS3 compliant and REACH unaffected. The original part's compliance status is not documented. If your application requires specific environmental certifications, the substitute's documented compliance is advantageous.

Q: What should I verify before implementing this substitute?

A: Verify three factors: (1) PCB footprint compatibility with 0.098" lead spacing, (2) circuit tolerance requirements relative to ±10% capacitance tolerance, and (3) application maximum operating temperature does not exceed 125°C.