HT471K Equivalent & Substitute Parts Reference

Part Overview

The HT471K is a 470 pF ceramic capacitor rated for 3000V (3kV) with Y5P temperature coefficient, manufactured by Cornell Dubilier Electronics (CDE) in radial disc configuration. This part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The HT471K serves general-purpose high-voltage applications requiring stable capacitance across the -30°C to 85°C operating range.

Substiute Parts

HT471K

Cornell Dubilier Electronics (CDE)In Stock: 863HT471K Datasheet

Current PartRFQ

S471K33Y5PR63K6R

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 988S471K33Y5PR63K6R Datasheet

SimilarRFQ

S471K33Y5PR63K7R

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 18698S471K33Y5PR63K7R Datasheet

SimilarRFQ

S471K33Y5PR65K7R

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 713S471K33Y5PR65K7R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HT471K is determined by strict equivalence across the following parameters:

Critical Matching Parameters:

• Capacitance: 470 pF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage Rating: 3000V (3kV) (exact match required)
• Temperature Coefficient: Y5P (B) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package Type: Radial, Disc (exact match required)

Allowable Variations:

• Operating Temperature Range: Substitutes rated to -30°C to 125°C exceed the main part's -30°C to 85°C specification and are acceptable
• Lead Style: Formed Leads - Kinked (substitutes) differs from Straight leads (main part) but remains compatible for through-hole mounting
• Lead Spacing: Variations in lead spacing (6.40mm, 7.50mm, 9.50mm) are acceptable provided PCB layout accommodates the specific substitute
• Physical Dimensions: Diameter and height variations are acceptable provided board space permits

All substitute parts are manufactured by Vishay Beyschlag/Draloric/BC Components and maintain active product status with ROHS3 compliance and REACH unaffected certification.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: S471K33Y5PR63K7R

The S471K33Y5PR63K7R is the recommended substitute for the obsolete HT471K. This part maintains all critical electrical parameters (470 pF, ±10%, 3000V, Y5P) and exceeds the operating temperature range specification. With 18,659 units in stock, this substitute offers superior availability. The extended temperature rating (-30°C to 125°C) provides operational margin beyond the original part's -30°C to 85°C range. Lead spacing of 7.50mm (0.295") accommodates standard PCB layouts with minimal redesign.

Secondary Substitutes: S471K33Y5PR63K6R and S471K33Y5PR65K7R

Both parts meet all critical electrical specifications. S471K33Y5PR63K6R features tighter lead spacing (6.40mm / 0.252") suitable for compact layouts. S471K33Y5PR65K7R provides standard 7.50mm lead spacing. Both are ROHS3 compliant and active products. Inventory levels are lower (946 and 676 units respectively) compared to the primary substitute.

Compliance Considerations

All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the original HT471K certification requirements. No additional compliance verification is required for direct substitution in existing applications.

Physical Layout Verification

PCB layout modifications may be required due to dimensional differences. The HT471K features a 10.00mm diameter with 6.00mm seated height and 9.50mm lead spacing. All Vishay substitutes have 8.50mm diameter, 12.50mm seated height, and reduced lead spacing (6.40mm or 7.50mm). Verify available board space and hole positioning before implementation.

Frequently Asked Questions (FAQ)

Q: Can S471K33Y5PR63K7R directly replace HT471K without PCB modification?

A: Electrical substitution is direct. Physical substitution requires PCB layout verification. The substitute has different lead spacing (7.50mm vs. 9.50mm) and height (12.50mm vs. 6.00mm). Hole positioning and clearance must be confirmed before assembly.

Q: Why do the substitute parts have higher maximum operating temperature (125°C vs. 85°C)?

A: The substitutes are manufactured to a higher temperature specification. This represents an enhanced capability that does not affect compatibility. Applications operating within the original -30°C to 85°C range experience no performance change.

Q: Are all three Vishay substitutes electrically equivalent?

A: Yes. S471K33Y5PR63K6R, S471K33Y5PR63K7R, and S471K33Y5PR65K7R are electrically identical (470 pF, ±10%, 3000V, Y5P). The differences are physical: lead spacing and inventory availability. Selection depends on PCB layout requirements and stock availability.

Q: What is the difference between "Straight" leads and "Formed Leads - Kinked"?

A: Straight leads (HT471K) are unbent. Formed Leads - Kinked (substitutes) are pre-bent for insertion into standard through-hole PCBs. Both are compatible with through-hole mounting. Kinked leads may require different insertion tooling or manual positioning.

Q: Do I need to re-qualify the substitute parts for my application?

A: Electrical re-qualification is not required if the application operates within the specified parameters (470 pF, ±10%, 3000V, -30°C to 85°C). Physical layout verification is mandatory. Consult your quality and engineering procedures for formal substitution approval.

Q: Which substitute should I choose if space is limited?

A: S471K33Y5PR63K6R has the smallest lead spacing (6.40mm), suitable for compact layouts. However, verify that your PCB holes can accommodate this spacing. S471K33Y5PR63K7R (7.50mm spacing) offers a balance between compactness and standard hole positioning.

Q: Are these parts available in tape-and-reel packaging?

A: The provided data indicates Bulk packaging for all Vishay substitutes. Contact the manufacturer or distributor for alternative packaging options if automated assembly is required.