HT08BW475KC Equivalent & Substitute Parts

Part Overview

The HT08BW475KC is a 4.7 µF ±10% 50V ceramic capacitor 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

HT08BW475KC

KEMETIn Stock: 995HT08BW475KC Datasheet

Current PartRFQ

C350C475K5R5TA

KEMETIn Stock: 1064C350C475K5R5TA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HT08BW475KC is determined by strict adherence to the following parameters:

Critical Matching Parameters:

• Capacitance value: 4.7 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage rating: 50V minimum (equal or higher acceptable)
• Temperature coefficient: X7R (exact match required)
• Mounting type: Through Hole Radial (exact match required)
• Lead spacing: 0.400" (10.16mm) (exact match required)

Application-Dependent Parameters:

• Operating temperature range: Original part supports -55°C to 200°C; substitute parts with reduced upper temperature limits may be acceptable depending on circuit requirements

The identified substitute C350C475K5R5TA meets all critical matching parameters. Physical dimensions may vary within the radial package envelope without affecting electrical performance or PCB compatibility, provided lead spacing remains constant.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: C350C475K5R5TA

The C350C475K5R5TA is the direct electrical equivalent of the HT08BW475KC. Both components share identical capacitance, tolerance, voltage rating, temperature coefficient, and lead spacing specifications. The substitute is manufactured by the same supplier (KEMET) and is currently in active production status, ensuring long-term availability.

Compatibility Considerations:

The C350C475K5R5TA features formed leads rather than straight leads. This difference affects insertion into PCB holes but does not alter electrical performance. The substitute's physical dimensions are smaller (0.330" L x 0.200" W versus 0.500" L x 0.270" W), which may provide layout advantages in space-constrained applications.

Temperature Range Limitation:

The substitute part operates to 125°C maximum, compared to the original part's 200°C upper limit. Applications requiring sustained operation above 125°C must evaluate whether this reduced thermal capability is acceptable for the specific circuit function. If high-temperature performance above 125°C is mandatory, alternative part families must be consulted.

Compliance Status:

The C350C475K5R5TA carries ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement in regulated industries.

Frequently Asked Questions (FAQ)

Q: Can C350C475K5R5TA be used as a direct replacement for HT08BW475KC in all applications?

A: Electrical substitution is valid for all applications operating at or below 125°C. Applications requiring sustained operation above 125°C require thermal performance evaluation. Lead style difference (formed versus straight) affects insertion method but not electrical function.

Q: What is the significance of the lead spacing specification in substitution?

A: Lead spacing of 0.400" (10.16mm) is the distance between component leads on the PCB. Both the main part and substitute share this specification, ensuring compatibility with existing PCB hole patterns. Substitution is valid only when lead spacing matches exactly.

Q: Does the X7R temperature coefficient requirement limit substitution options?

A: Yes. X7R specifies the capacitance change across the operating temperature range. Only components with X7R designation maintain the same temperature stability characteristics. Substitutes with different temperature coefficients (such as Y5V or Z5U) are not electrically equivalent and introduce different capacitance variation behavior.

Q: Why is the C350C475K5R5TA smaller than the HT08BW475KC?

A: Physical size reduction reflects advances in ceramic capacitor manufacturing technology. Smaller dimensions do not affect electrical performance when all electrical parameters remain identical. Verify PCB layout clearances to confirm the smaller footprint is compatible with surrounding components.

Q: Is RoHS3 compliance a substitution requirement?

A: RoHS3 compliance is a regulatory and procurement requirement, not an electrical substitution criterion. The C350C475K5R5TA's ROHS3 status makes it suitable for applications subject to RoHS regulations. Legacy applications may not require this compliance.

Q: Can the tolerance specification be relaxed during substitution?

A: No. The ±10% tolerance defines the acceptable capacitance range (4.23 µF to 5.17 µF). Substitutes with different tolerances introduce different circuit performance characteristics and are not equivalent.