124MABA01KGL Film Capacitor Equivalent & Substitute Parts

Part Overview

The 124MABA01KGL is a 0.12 µF film capacitor manufactured by Cornell Dubilier / Illinois Capacitor, rated for 800V DC operation with ±10% tolerance. This radial polypropylene metallized capacitor is designed for motor run applications and operates across a temperature range of -40°C to 100°C. The part is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing system support and new designs.

Key Parameters

Parameter	Value
Capacitance	0.12 µF
Tolerance	±10%
Voltage Rating - DC	800V
Voltage Rating - AC	400V
Dielectric Material	Polypropylene (PP), Metallized
Operating Temperature Range	-40°C ~ 100°C
Mounting Type	Through Hole
Package / Case	Radial
Lead Spacing	0.886" (22.50mm)
Termination	PC Pins
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 124MABA01KGL are categorized into two groups based on substitution criteria:

Parametric Equivalents maintain identical electrical and mechanical specifications, including capacitance (0.12 µF), tolerance (±10%), voltage rating (800V DC / 400V AC), dielectric material (polypropylene metallized), operating temperature range (-40°C ~ 100°C), and physical dimensions. These parts are direct replacements with no circuit redesign required.

Functional Substitutes share the same capacitance value (0.12 µF) and dielectric material (polypropylene metallized) but feature higher voltage ratings (1kV to 2kV DC), improved tolerance (±5%), extended temperature ranges, and enhanced performance characteristics. These substitutes are compatible when the application permits higher voltage ratings and can accommodate dimensional variations. Substitution is valid when circuit voltage requirements do not exceed the substitute part's rating and physical space constraints are satisfied.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage DC	Voltage AC	Temp Range	Status	Size L x W (mm)	Height Max (mm)
124MABA01KGL	Cornell Dubilier / Illinois Capacitor	0.12 µF	±10%	800V	400V	-40°C ~ 100°C	Obsolete	26.50 x 7.00	16.00
MABA013120KGL	Nichicon	0.12 µF	±10%	800V	400V	-40°C ~ 100°C	Active	26.50 x 7.00	16.00
MABA013120KGS	Nichicon	0.12 µF	±10%	800V	400V	-40°C ~ 100°C	Active	26.50 x 7.00	16.00
R76QN31204030J	KEMET	0.12 µF	±5%	1000V	600V	-55°C ~ 110°C	Active	26.50 x 11.00	20.10
R75RN312050H3J	KEMET	0.12 µF	±5%	1250V	600V	-55°C ~ 125°C	Active	26.50 x 11.00	20.10
R76QN312050H3J	KEMET	0.12 µF	±5%	1000V	600V	-55°C ~ 125°C	Active	26.50 x 11.00	20.10
R75TN312050H3J	KEMET	0.12 µF	±5%	1600V	650V	-55°C ~ 125°C	Active	26.50 x 13.00	22.10
PHE450SD6120JR06L2	KEMET	0.12 µF	±5%	2000V	700V	-55°C ~ 105°C	Active	26.00 x 15.50	24.50

Engineering Selection Recommendations

Direct Replacement (Parametric Equivalents):

The Nichicon parts MABA013120KGL and MABA013120KGS are parametric equivalents to the 124MABA01KGL. Both components are active products with identical electrical specifications (0.12 µF, ±10% tolerance, 800V DC, 400V AC), matching operating temperature range (-40°C ~ 100°C), and identical physical dimensions (26.50mm x 7.00mm x 16.00mm height). These parts provide direct substitution without circuit modification and maintain full compatibility with existing PCB layouts and mounting requirements.

Higher Voltage Substitutes (KEMET R76 and R75 Series):

The KEMET R76QN31204030J and R76QN312050H3J (1kV DC rated) provide functional substitution when circuit design permits higher voltage operation. Both maintain the 0.12 µF capacitance and polypropylene dielectric material. The R76QN31204030J operates to 110°C maximum, while R76QN312050H3J extends to 125°C. Physical dimensions increase to 26.50mm x 11.00mm x 20.10mm height. These parts carry AEC-Q200 automotive qualification and are suitable for applications requiring enhanced voltage margin.

The KEMET R75RN312050H3J (1.25kV DC) and R75TN312050H3J (1.6kV DC) offer additional voltage headroom with extended temperature operation to 125°C and AEC-Q200 rating. The R75TN312050H3J reaches 1.6kV DC with dimensions of 26.50mm x 13.00mm x 22.10mm height.

Maximum Voltage Substitute (KEMET PHE450 Series):

The KEMET PHE450SD6120JR06L2 provides the highest voltage rating at 2kV DC with ±5% tolerance and -55°C ~ 105°C operating range. Physical dimensions are 26.00mm x 15.50mm x 24.50mm height. This part is suitable for high-voltage applications where maximum voltage margin is required.

All substitute parts are ROHS3 compliant and REACH unaffected, matching the compliance status of the original component.

Frequently Asked Questions (FAQ)

Q: Can MABA013120KGL or MABA013120KGS be used as direct replacements for 124MABA01KGL?

A: Yes. Both Nichicon parts are parametric equivalents with identical capacitance (0.12 µF), tolerance (±10%), voltage ratings (800V DC / 400V AC), temperature range (-40°C ~ 100°C), and physical dimensions. No circuit redesign is required.

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

A: Parametric equivalents maintain all electrical and mechanical specifications of the original part. Functional substitutes share the same capacitance and dielectric material but feature higher voltage ratings, improved tolerance, or extended temperature ranges. Functional substitutes require verification that circuit voltage requirements do not exceed the substitute part's rating.

Q: Can KEMET R76 series parts replace the 124MABA01KGL in motor run applications?

A: Yes, when circuit voltage does not exceed 1kV DC. The R76QN31204030J and R76QN312050H3J maintain 0.12 µF capacitance and polypropylene dielectric material. Physical dimensions increase from 16.00mm to 20.10mm height, requiring verification of available PCB space. Both parts carry AEC-Q200 automotive qualification.

Q: What are the dimensional constraints when substituting with KEMET parts?

A: The original 124MABA01KGL measures 26.50mm L x 7.00mm W x 16.00mm height. KEMET R76 series parts measure 26.50mm L x 11.00mm W x 20.10mm height. KEMET R75TN312050H3J measures 26.50mm L x 13.00mm W x 22.10mm height. KEMET PHE450SD6120JR06L2 measures 26.00mm L x 15.50mm W x 24.50mm height. Lead spacing remains constant at 22.50mm across all parts.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the compliance status of the original 124MABA01KGL component.

Q: What is the tolerance difference between the original part and KEMET substitutes?

A: The 124MABA01KGL features ±10% tolerance. All KEMET substitute parts (R76, R75, and PHE450 series) feature ±5% tolerance, providing tighter capacitance accuracy.

Q: Can the PHE450SD6120JR06L2 be used in all applications where 124MABA01KGL is specified?

A: The PHE450SD6120JR06L2 is compatible when circuit voltage does not exceed 2kV DC and available PCB space accommodates dimensions of 26.00mm L x 15.50mm W x 24.50mm height. The higher voltage rating and ±5% tolerance provide enhanced performance margin. Operating temperature range is -55°C ~ 105°C, which covers the original -40°C ~ 100°C specification.

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