TC36A: 22 µF 50 V Aluminum Electrolytic Capacitors Axial Equivalent & Substitute Parts

Part Overview

The TC36A is a 22 µF, 50 V aluminum electrolytic capacitor in axial configuration manufactured by Cornell Dubilier Electronics (CDE). This component is designated as obsolete, necessitating the identification of functionally compatible alternatives from active manufacturers. The TC36A serves general-purpose applications requiring reliable capacitive energy storage in through-hole mounting configurations. The substitution of this part requires matching critical electrical characteristics including capacitance value, voltage rating, and equivalent series resistance to ensure functional equivalence in existing circuit designs.

Key Parameters

Parameter	Value
Capacitance	22 µF
Voltage - Rated	50 V
ESR (Equivalent Series Resistance)	6.09 Ohm @ 120Hz
Operating Temperature Range	-40°C ~ 85°C
Lifetime @ Temperature	1000 Hrs @ 85°C
Package / Case	Axial, Can
Mounting Type	Through Hole
Polarization	Polar
Tolerance	-10%, +75%
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Qualified substitute parts for the TC36A must satisfy the following mandatory criteria:

Capacitance Value: Exactly 22 µF (allowable tolerance range includes original specification)
Voltage Rating: Minimum 50 V (equal or higher voltage rating maintains circuit safety margin)
Package Type: Axial, Can configuration for through-hole mounting compatibility
Polarization: Polar (electrolytic construction)
Operating Temperature Range: Minimum -40°C ~ 85°C coverage
Equivalent Series Resistance: Within acceptable range for power dissipation and ripple current handling

The identified substitutes (MAL202138229E3 and MAL213831229E3) from Vishay Beyschlag/Draloric/BC Components meet these core substitution requirements. Both parts maintain the 22 µF capacitance, axial through-hole configuration, and polar characteristics. Voltage ratings of 63 V and 50 V respectively provide equal or superior electrical performance compared to the original 50 V specification.

Parameter Comparison

Parameter	TC36A (CDE)	MAL202138229E3 (Vishay)	MAL213831229E3 (Vishay)
Manufacturer	Cornell Dubilier Electronics	Vishay Beyschlag/Draloric/BC Components	Vishay Beyschlag/Draloric/BC Components
Capacitance	22 µF	22 µF	22 µF
Voltage - Rated	50 V	63 V	50 V
Tolerance	-10%, +75%	±20%	±20%
ESR	6.09 Ohm @ 120Hz	5.8 Ohm	6.5 Ohm @ 100Hz
Lifetime @ Temperature	1000 Hrs @ 85°C	2500 Hrs @ 85°C	2000 Hrs @ 105°C
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 105°C
Package / Case	Axial, Can	Axial, Can	Axial, Can
Mounting Type	Through Hole	Through Hole	Through Hole
Polarization	Polar	Polar	Polar
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Both substitute parts are manufactured by active suppliers with current product status, ensuring long-term availability and supply chain reliability. All three components (original and substitutes) are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for modern electronic applications.

MAL202138229E3 offers improved electrical performance through lower ESR (5.8 Ohm versus 6.09 Ohm) and extended lifetime (2500 hours at 85°C versus 1000 hours). The higher voltage rating of 63 V provides additional safety margin. This part is available in Cut Tape packaging with 3856 units in stock.

MAL213831229E3 maintains the exact 50 V voltage specification of the original TC36A while providing comparable ESR performance (6.5 Ohm @ 100Hz) and extended lifetime (2000 hours at 105°C). The extended operating temperature range to 105°C enables deployment in higher-temperature environments. This part is available in Cut Tape packaging with 5516 units in stock and is designated for automotive applications.

Frequently Asked Questions (FAQ)

Q: Can MAL202138229E3 be used as a direct replacement for TC36A? A: Yes. Both parts share identical capacitance (22 µF), axial through-hole configuration, and polar electrolytic construction. The MAL202138229E3 operates across the same temperature range (-40°C ~ 85°C) with superior ESR and extended lifetime specifications. The higher 63 V rating does not restrict application in 50 V circuits.

Q: What is the difference between the two Vishay substitute parts? A: MAL202138229E3 provides a 63 V rating with lower ESR (5.8 Ohm), while MAL213831229E3 maintains the original 50 V rating with extended operating temperature to 105°C. Selection depends on circuit voltage requirements and thermal environment. The MAL202138229E3 suits general-purpose replacements, while MAL213831229E3 addresses automotive and elevated-temperature applications.

Q: Are dimensional differences significant for circuit board retrofit applications? A: TC36A measures 0.236" diameter × 0.630" length (6.00mm × 16.00mm). MAL202138229E3 maintains the same 0.236" diameter with reduced length of 0.394" (6.00mm × 10.00mm). MAL213831229E3 measures 0.303" diameter × 0.500" length (7.70mm × 12.70mm). Board layout verification is necessary when retrofitting due to dimensional variations, particularly regarding lead spacing accommodation.

Q: How do tolerance specifications affect circuit performance? A: TC36A specifies -10%, +75% tolerance, while both Vishay substitutes specify ±20% tolerance. The narrower Vishay tolerance range improves circuit predictability and performance consistency. In applications sensitive to capacitance variation, the ±20% specification provides tighter control compared to the original part's wider tolerance band.

Q: Do regulatory certifications differ between parts? A: All three parts maintain ROHS3 compliance and REACH unaffected status. No regulatory restrictions exist for substitution in either direction. HTSUS coding (8532.22.0020) is identical across all parts, confirming regulatory equivalence.

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