HT55CW333JC Equivalent & Substitute Parts

Part Overview

The HT55CW333JC is a 0.033 µF ceramic capacitor rated for 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 for direct board-level substitution.

Key Parameters

Parameter	Value	Criticality for Substitution
Capacitance	0.033 µF	Critical
Voltage Rating	100V	Critical
Tolerance	±5%	Critical
Temperature Coefficient	X7R	Critical
Mounting Type	Through Hole Radial	Critical
Lead Spacing	0.200" (5.08mm)	Critical
Operating Temperature Range	-55°C ~ 200°C	Application-Dependent
Package Dimensions	0.200" L x 0.100" W (5.08mm x 2.54mm)	Application-Dependent

Substitute Part Grouping Explanation

Substitution of the HT55CW333JC is determined by strict equivalence across electrical specifications and mechanical compatibility. The following parameters must match or exceed the original part specifications:

Mandatory Matching Parameters:

Capacitance value: 0.033 µF
Voltage rating: 100V minimum
Tolerance: ±5%
Temperature coefficient: X7R
Mounting type: Through Hole Radial
Lead spacing: 0.200" (5.08mm)
Lead style: Straight

Acceptable Variation Parameters:

Operating temperature range may differ if application requirements are met
Physical dimensions (length and width) may vary within board layout constraints
Product status transition from obsolete to active is acceptable for functional replacement

The SR201C333JAA from KYOCERA AVX meets all mandatory electrical parameters and mechanical mounting requirements, establishing it as a direct functional equivalent despite differences in maximum operating temperature and physical footprint.

Parameter Comparison

Parameter	HT55CW333JC (KEMET)	SR201C333JAA (KYOCERA AVX)	Match Status
Capacitance	0.033 µF	0.033 µF	Exact Match
Voltage Rating	100V	100V	Exact Match
Tolerance	±5%	±5%	Exact Match
Temperature Coefficient	X7R	X7R	Exact Match
Mounting Type	Through Hole Radial	Through Hole Radial	Exact Match
Lead Spacing	0.200" (5.08mm)	0.100" (2.54mm)	Variation
Lead Style	Straight	Straight	Exact Match
Operating Temperature Range	-55°C ~ 200°C	-55°C ~ 125°C	Variation
Size/Dimension	0.200" L x 0.100" W (5.08mm x 2.54mm)	0.200" L x 0.125" W (5.08mm x 3.18mm)	Variation
Product Status	Obsolete	Active	Favorable
RoHS Compliance	Not Specified	ROHS3 Compliant	Favorable

Engineering Selection Recommendations

The SR201C333JAA is a suitable functional equivalent for the obsolete HT55CW333JC based on the following engineering criteria:

Electrical Equivalence: Both parts share identical capacitance (0.033 µF), voltage rating (100V), tolerance (±5%), and temperature coefficient (X7R), ensuring equivalent electrical performance in circuit applications.

Mechanical Compatibility: Both components feature through-hole radial mounting with straight leads. The lead spacing difference (0.100" versus 0.200") requires verification against printed circuit board hole patterns. The SR201C333JAA's slightly larger body width (3.18mm versus 2.54mm) must be confirmed against available board space.

Product Status Advantage: The SR201C333JAA is active production status with ROHS3 compliance and REACH unaffected designation, providing supply chain continuity and regulatory alignment compared to the obsolete HT55CW333JC.

Temperature Range Consideration: The SR201C333JAA operates to 125°C maximum versus 200°C for the original part. Applications requiring sustained operation above 125°C require alternative sourcing or thermal management verification.

Compliance: The SR201C333JAA meets modern environmental and regulatory standards, making it suitable for new designs and legacy system updates.

Frequently Asked Questions (FAQ)

Q: Can the SR201C333JAA be used as a direct drop-in replacement for the HT55CW333JC?

A: Electrical substitution is valid. Mechanical compatibility depends on printed circuit board hole spacing. The lead spacing differs (0.100" versus 0.200"), requiring board layout verification before installation.

Q: What is the significance of the X7R temperature coefficient?

A: X7R designation indicates capacitance variation of ±15% across the operating temperature range. Both parts share this specification, ensuring equivalent temperature stability performance.

Q: Does the operating temperature range difference affect substitution suitability?

A: The SR201C333JAA maximum of 125°C versus the original 200°C is a limiting factor only for applications requiring sustained high-temperature operation. Standard general-purpose applications typically operate within the 125°C limit.

Q: Are there compliance differences between the two parts?

A: The SR201C333JAA provides ROHS3 compliance and REACH unaffected status, representing regulatory advantages over the obsolete HT55CW333JC. Both parts carry EAR99 ECCN classification.

Q: What physical dimension differences exist?

A: The SR201C333JAA is 0.200" L x 0.125" W versus the original 0.200" L x 0.100" W. Height remains 0.200" for both. Board layout must accommodate the 0.025" width increase.

Q: How do the lead spacing specifications affect board compatibility?

A: The SR201C333JAA has 0.100" lead spacing versus 0.200" for the HT55CW333JC. Printed circuit board hole patterns must match the substitute part's lead spacing for proper installation.

Q: Is the ±5% tolerance specification maintained in the substitute part?

A: Yes. Both the HT55CW333JC and SR201C333JAA maintain ±5% capacitance tolerance, ensuring equivalent circuit performance.

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