505MABA03KHS Film Capacitor Equivalent & Substitute Parts

Part Overview

The 505MABA03KHS is a 5 µF film capacitor manufactured by Cornell Dubilier / Illinois Capacitor, rated for 500V DC with ±10% tolerance and polypropylene metallized dielectric. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing applications in motor run circuits and DC filtering.

The part features through-hole radial mounting with PC pin termination, operating temperature range of -40°C to 100°C, and ROHS3 compliance. Due to its obsolete status, equivalent active parts from alternative manufacturers are required for design continuity and procurement.

Key Parameters

Parameter	Value
Capacitance	5 µF
Tolerance	±10%
Voltage Rating - DC	500V
Voltage Rating - AC	250V
Dielectric Material	Polypropylene (PP), Metallized
Mounting Type	Through Hole
Package / Case	Radial
Lead Spacing	1.083" (27.50mm)
Termination	PC Pins
Operating Temperature	-40°C ~ 100°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the 505MABA03KHS is determined by the following critical parameters:

Primary Substitution Criteria:

Capacitance: 5 µF (exact match required)
Mounting Type: Through Hole Radial (mechanical compatibility)
Lead Spacing: 1.083" (27.50mm) (PCB layout compatibility)
Termination: PC Pins (connection method)
Dielectric Material: Polypropylene (PP), Metallized (electrical performance characteristics)

Secondary Compatibility Parameters:

Voltage Rating - DC: Minimum 500V (equal or higher acceptable)
Tolerance: ±10% or tighter (±5% acceptable as improvement)
Operating Temperature: Minimum -40°C ~ 100°C range
RoHS3 Compliance: Required for regulatory alignment

Substitute parts are categorized into two groups:

Group 1 - Parametric Equivalents: Parts matching all primary criteria with identical voltage rating (500V DC) and tolerance (±10%). These provide direct replacement capability.

Group 2 - Electrical Substitutes: Parts matching all primary criteria with higher voltage ratings (800V or 1100V DC) and/or tighter tolerance (±5%). These provide enhanced performance margins while maintaining mechanical and electrical compatibility.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage - DC	Voltage - AC	Operating Temp	Product Status	Lead Spacing	Size L x W (mm)	Height Max (mm)
505MABA03KHS	Cornell Dubilier / Illinois Capacitor	5 µF	±10%	500V	250V	-40°C ~ 100°C	Obsolete	27.50mm	32.00 x 18.00	33.00
MABA034500KHL	Nichicon	5 µF	±10%	500V	250V	-40°C ~ 100°C	Active	27.50mm	32.00 x 18.00	33.00
MABA034500KHS	Nichicon	5 µF	±10%	500V	250V	-40°C ~ 100°C	Active	27.50mm	32.00 x 18.00	33.00
B32774D0505K000	EPCOS - TDK Electronics	5 µF	±10%	1100V	—	-40°C ~ 105°C	Active	27.50mm	31.50 x 19.00	30.00
C4AQQBU4500A11J	KEMET	5 µF	±5%	1100V	—	-40°C ~ 105°C	Active	27.50mm	31.50 x 19.00	29.20
C4AQIBU4500A1YJ	KEMET	5 µF	±5%	800V	—	-40°C ~ 105°C	Active	27.50mm	31.50 x 14.00	28.20
ECW-FG80505J	Panasonic Electronic Components	5 µF	±5%	800V	—	-40°C ~ 110°C	Active	27.50mm	31.50 x 16.00	30.00

Engineering Selection Recommendations

Direct Replacement (Parametric Equivalents):

MABA034500KHL and MABA034500KHS (Nichicon) are parametric equivalents providing identical electrical and mechanical specifications to the 505MABA03KHS. Both parts are active products with ROHS3 compliance and identical operating temperature range. These parts are recommended as primary replacements for applications requiring exact specification matching.

Enhanced Performance Substitutes (Higher Voltage Rating):

B32774D0505K000 (EPCOS - TDK Electronics), C4AQQBU4500A11J (KEMET), and C4AQIBU4500A1YJ (KEMET) provide higher DC voltage ratings (1100V or 800V) with maintained 5 µF capacitance and compatible mechanical form factors. These parts are suitable for applications where voltage margin improvement is beneficial. All are active products with ROHS3 compliance and extended operating temperature ranges (-40°C to 105°C or 110°C).

Tighter Tolerance Option:

C4AQQBU4500A11J and C4AQIBU4500A1YJ offer ±5% tolerance compared to the original ±10%, providing improved capacitance accuracy. These KEMET parts carry AEC-Q200 automotive qualification.

Panasonic Alternative:

ECW-FG80505J (Panasonic) provides 800V DC rating with ±5% tolerance and extended operating temperature to 110°C. This part carries AEC-Q200 automotive qualification and is suitable for high-frequency and switching applications.

All substitute parts maintain the critical 27.50mm lead spacing and through-hole radial mounting configuration required for PCB compatibility.

Frequently Asked Questions (FAQ)

Q: Can MABA034500KHL or MABA034500KHS be used as direct replacements for 505MABA03KHS?

A: Yes. Both Nichicon parts are parametric equivalents with identical capacitance (5 µF), tolerance (±10%), voltage rating (500V DC / 250V AC), operating temperature range (-40°C ~ 100°C), and mechanical dimensions. Lead spacing (27.50mm) and through-hole radial mounting are identical. Both are active products with ROHS3 compliance.

Q: What is the difference between parametric equivalents and electrical substitutes?

A: Parametric equivalents (MABA034500KHL, MABA034500KHS) match all specifications of the original part exactly. Electrical substitutes (B32774D0505K000, C4AQQBU4500A11J, C4AQIBU4500A1YJ, ECW-FG80505J) maintain the same capacitance, mounting type, and lead spacing but offer higher voltage ratings or tighter tolerance, providing enhanced performance margins.

Q: Can I use a 1100V rated capacitor in place of a 500V rated capacitor?

A: Yes, from an electrical standpoint. Higher voltage-rated capacitors are compatible with lower voltage applications. However, physical dimensions may differ slightly. Verify that B32774D0505K000 (height 30.00mm) and C4AQQBU4500A11J (height 29.20mm) fit within your PCB clearance constraints compared to the original 33.00mm height.

Q: What is the significance of ±5% tolerance versus ±10% tolerance?

A: ±5% tolerance (KEMET and Panasonic parts) provides tighter capacitance accuracy than ±10% (original and Nichicon equivalents). For applications sensitive to capacitance variation, ±5% tolerance parts offer improved performance consistency. Both tolerance levels are acceptable for motor run and DC filtering applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance status, matching the regulatory requirement of the original 505MABA03KHS.

Q: Do the substitute parts have different lead spacing?

A: No. All substitute parts maintain the critical 27.50mm lead spacing required for PCB compatibility with the original design.

Q: Which substitute part has the lowest profile?

A: C4AQIBU4500A1YJ (KEMET) has the lowest seated height at 28.20mm, compared to the original 33.00mm. This part is suitable for space-constrained applications.

Q: Are KEMET and Panasonic parts automotive-qualified?

A: Yes. C4AQQBU4500A11J, C4AQIBU4500A1YJ (KEMET), and ECW-FG80505J (Panasonic) carry AEC-Q200 automotive qualification, suitable for automotive and high-reliability applications.

Q: What is the operating temperature advantage of substitute parts?

A: The original 505MABA03KHS operates from -40°C to 100°C. Substitute parts from EPCOS, KEMET, and Panasonic extend the upper limit to 105°C or 110°C, providing improved thermal margin for high-temperature environments.

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