HT55CW473JC Equivalent & Substitute Parts

Part Overview

The HT55CW473JC is a 0.047 µF ceramic capacitor rated at 100V with X7R temperature coefficient, manufactured by KEMET. This radial through-hole component is designed for high-temperature applications with an operating range of -55°C to 200°C. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Substiute Parts

HT55CW473JC

KEMETIn Stock: 938HT55CW473JC Datasheet

Current PartRFQ

C340C473J1G5TA

KEMETIn Stock: 1404C340C473J1G5TA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HT55CW473JC is determined by the following critical parameters:

Electrical Equivalence Requirements:

• Capacitance value: 0.047 µF (exact match required)
• Voltage rating: 100V minimum
• Tolerance: ±5% or better
• Lead spacing: 0.200" (5.08mm) for PCB compatibility

Mechanical Compatibility:

• Mounting type: Through-hole radial configuration
• Lead style: Straight leads
• Package case: Radial

Functional Considerations: The HT55CW473JC operates across -55°C to 200°C with X7R temperature coefficient. Substitute parts must maintain electrical performance within the specified temperature range. The C340C473J1G5TA operates across -55°C to 125°C with C0G/NP0 temperature coefficient, representing a narrower temperature range but superior temperature stability characteristics within its operating window.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: C340C473J1G5TA

The C340C473J1G5TA is the direct functional equivalent for the obsolete HT55CW473JC. Both components share identical electrical specifications: 0.047 µF capacitance, 100V voltage rating, ±5% tolerance, and 0.200" lead spacing for through-hole radial mounting.

Status and Compliance Advantages: The C340C473J1G5TA maintains active product status with ROHS3 compliance and REACH unaffected designation, ensuring long-term availability and regulatory alignment. The HT55CW473JC, classified as obsolete, presents procurement risk and supply discontinuation.

Temperature Coefficient Consideration: The substitute employs C0G/NP0 temperature coefficient versus the original X7R specification. C0G/NP0 provides superior temperature stability with minimal capacitance variation across temperature, whereas X7R permits greater capacitance drift. For applications requiring the extended -55°C to 200°C range of the original part, the C340C473J1G5TA's -55°C to 125°C operating window must be evaluated against actual circuit thermal requirements.

Physical Dimensions: The C340C473J1G5TA exhibits larger physical dimensions (0.290" L x 0.160" W versus 0.200" L x 0.100" W) and greater seated height (0.494" versus 0.200"). PCB layout verification is required to confirm clearance compatibility.

Frequently Asked Questions (FAQ)

Q: Can the C340C473J1G5TA directly replace the HT55CW473JC in all applications?

A: Direct replacement is possible for applications operating within -55°C to 125°C. Applications requiring operation above 125°C require thermal analysis to confirm the substitute's suitability. The C0G/NP0 temperature coefficient of the substitute provides superior stability compared to X7R within the overlapping temperature range.

Q: What is the significance of the temperature coefficient difference between X7R and C0G/NP0?

A: X7R permits ±15% capacitance variation across its operating temperature range. C0G/NP0 maintains ±0.3% capacitance variation across temperature. For precision applications, C0G/NP0 offers superior performance. For general-purpose applications, both coefficients are functionally equivalent within their respective operating ranges.

Q: Are there physical installation considerations when substituting the C340C473J1G5TA?

A: Yes. The substitute is physically larger (0.290" L x 0.160" W x 0.494" H seated) compared to the original (0.200" L x 0.100" W x 0.200" H seated). Lead spacing remains identical at 0.200", ensuring hole compatibility. PCB layout must accommodate the increased component footprint and height to prevent interference with adjacent components or enclosure constraints.

Q: What compliance advantages does the C340C473J1G5TA provide?

A: The substitute is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The original HT55CW473JC compliance status is not specified. Active product status ensures continued availability and manufacturer support.

Q: Is the ±5% tolerance specification identical between both parts?

A: Yes. Both the HT55CW473JC and C340C473J1G5TA maintain ±5% capacitance tolerance, ensuring equivalent circuit performance from a tolerance perspective.