R75UI118050H4J Film Capacitor Equivalent & Substitute Parts

Part Overview

The R75UI118050H4J is a 1800 pF film capacitor manufactured by KEMET, designed for high-reliability applications requiring polypropylene dielectric construction with metallized electrodes. This radial through-hole component operates at 2000V DC (700V AC) and is rated for automotive applications under the AEC-Q200 standard. The part is currently active in production with 942 units in stock.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across critical parameters including capacitance, voltage rating, dielectric material, package dimensions, and lead spacing. Identifying qualified substitutes ensures design flexibility and supply chain continuity.

Substiute Parts

R75UI118050H4J

KEMETIn Stock: 1040R75UI118050H4J Datasheet

Current PartRFQ

R76UI118050H4J

KEMETIn Stock: 1559R76UI118050H4J Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution between the R75UI118050H4J and R76UI118050H4J is valid based on the following criteria:

Electrical Equivalence:

• Identical capacitance value: 1800 pF
• Identical tolerance: ±5%
• Identical voltage ratings: 2000V DC / 700V AC
• Identical dielectric material: Polypropylene (PP), Metallized
• Identical operating temperature range: -55°C to 125°C

Mechanical Compatibility:

• Identical mounting type: Through Hole
• Identical package type: Radial
• Identical lead spacing: 0.591" (15.00 mm)
• Identical seated height: 0.398" (10.10 mm)
• Identical termination: PC Pins

Compliance & Certification:

• Both parts carry AEC-Q200 automotive rating
• Both parts are ROHS3 Compliant
• Both parts are REACH Unaffected
• Both parts share identical ECCN and HTSUS codes

The primary difference between these parts is the series designation (R75H versus R76) and ESR (Equivalent Series Resistance) specification. Both parts are manufactured by KEMET and maintain active product status.

Parameter Comparison

Engineering Selection Recommendations

Both R75UI118050H4J and R76UI118050H4J are qualified substitutes for applications requiring 1800 pF film capacitors at 2000V DC operating conditions. Selection between these parts should be based on the following factors:

Supply Availability: The R76UI118050H4J currently maintains higher inventory (1487 units) compared to the R75UI118050H4J (942 units), providing improved supply chain flexibility for high-volume procurement.

Compliance Requirements: Both parts satisfy automotive-grade requirements through AEC-Q200 certification and maintain identical RoHS3 and REACH compliance status, making either part suitable for regulated applications.

Series Designation: The R75H series and R76 series represent different product lines within KEMET's film capacitor portfolio. Both series maintain active production status and equivalent electrical performance for the specified capacitance and voltage rating.

Physical Compatibility: Identical mechanical specifications (lead spacing, seated height, package dimensions, and termination type) ensure direct board-level compatibility without PCB redesign requirements.

Frequently Asked Questions (FAQ)

Q: Can R76UI118050H4J be used as a direct replacement for R75UI118050H4J in existing designs?

A: Yes. Both parts share identical electrical specifications (1800 pF, ±5%, 2000V DC), mechanical dimensions (lead spacing 0.591", seated height 0.398"), and compliance certifications (AEC-Q200, ROHS3). Direct substitution is supported without circuit modification or PCB layout changes.

Q: What is the difference between the R75H and R76 series?

A: The R75H and R76 series are distinct product lines within KEMET's film capacitor portfolio. For the 1800 pF / 2000V DC specification, both series deliver equivalent electrical performance and mechanical compatibility. Series designation reflects internal product architecture and manufacturing processes rather than functional differences at the specified rating.

Q: Are there any ESR (Equivalent Series Resistance) considerations when substituting between these parts?

A: The R75UI118050H4J specifies 442.1 mOhms ESR, while the R76UI118050H4J specifies 1.061 Ohms ESR. Applications sensitive to ESR characteristics should confirm that the higher ESR value of the R76 series remains acceptable for the intended circuit function. Both values are within acceptable ranges for standard film capacitor applications.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both R75UI118050H4J and R76UI118050H4J carry AEC-Q200 certification, qualifying them for automotive applications. Both parts maintain identical compliance status for RoHS3 and REACH regulations.

Q: What is the lead spacing for these radial film capacitors?

A: Both parts feature 0.591 inches (15.00 mm) lead spacing, enabling direct PCB compatibility without modification to existing through-hole pad layouts.

Q: Are these parts suitable for high-frequency or switching applications?

A: Yes. Both R75UI118050H4J and R76UI118050H4J are specified for high-frequency, switching, and high pulse DV/DT applications, reflecting their polypropylene metallized dielectric construction and automotive-grade design.