337CKH063M Equivalent & Substitute Parts Reference

Part Overview

The 337CKH063M is a 330 µF, 63 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the CKH series. This radial, through-hole component is designed for bypass and decoupling applications with a rated lifetime of 2000 hours at 105°C. The part is currently active in production with 1084 units in stock.

Substitute parts are necessary when the original component becomes unavailable, when extended operational lifetime is required, or when design specifications demand enhanced performance characteristics such as lower impedance or higher ripple current ratings.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	63 V
Tolerance	±20%
Polarization	Polar
Package Type	Radial, Can
Mounting Type	Through Hole
Lead Spacing	0.197" (5.00 mm)
Case Diameter	0.492" (12.50 mm)
Operating Temperature Range	-40°C to 105°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 337CKH063M is determined by the following mandatory parameters:

Electrical Parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 63 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)

Mechanical Parameters:

Package Type: Radial, Can (exact match required)
Mounting Type: Through Hole (exact match required)
Lead Spacing: 0.197" (5.00 mm) (exact match required)
Case Diameter: 0.492" (12.50 mm) (exact match required)

Compliance Parameters:

RoHS Status: ROHS3 Compliant (exact match required)
REACH Status: REACH Unaffected (exact match required)

All three substitute parts meet these mandatory criteria. Variations in lifetime rating, impedance, ripple current capacity, and operating temperature range represent performance enhancements or application-specific optimizations rather than substitution barriers.

Parameter Comparison

Parameter	337CKH063M (Cornell Dubilier)	EEU-FR1J331 (Panasonic)	ELXZ630ELL331MK20S (Chemi-Con)	UPS1J331MHD (Nichicon)
Capacitance	330 µF	330 µF	330 µF	330 µF
Voltage Rating	63 V	63 V	63 V	63 V
Tolerance	±20%	±20%	±20%	±20%
Lead Spacing	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)
Case Diameter	0.492" (12.50 mm)	0.492" (12.50 mm)	0.492" (12.50 mm)	0.492" (12.50 mm)
Height (Max)	0.846" (21.50 mm)	0.866" (22.00 mm)	0.846" (21.50 mm)	0.866" (22.00 mm)
Operating Temperature	-40°C to 105°C	-40°C to 105°C	-55°C to 105°C	-55°C to 105°C
Lifetime @ 105°C	2000 Hrs	10000 Hrs	7000 Hrs	3000 Hrs
ESR @ 120 Hz	502 mOhm	Not Specified	Not Specified	Not Specified
Impedance	Not Specified	33 mOhms	85 mOhms	120 mOhms
Ripple Current @ 120 Hz	690 mA	1.107 A	645 mA	695.8 mA
Ripple Current @ 100 kHz	1.1385 A	1.582 A	1.29 A	980 mA
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Not For New Designs

Engineering Selection Recommendations

EEU-FR1J331 (Panasonic FR-A Series)

This substitute offers the longest operational lifetime at 10000 hours at 105°C, representing a five-fold increase over the original 337CKH063M. The part is active in production and ROHS3 compliant. The Panasonic FR-A series demonstrates superior ripple current performance at both low and high frequencies. This substitute is suitable for applications requiring extended service life and enhanced thermal stability.

ELXZ630ELL331MK20S (Chemi-Con LXZ Series)

This substitute is rated for automotive applications with AEC-Q200 certification and extends the operating temperature range to -55°C. The lifetime rating of 7000 hours at 105°C provides a 3.5-fold improvement over the original part. The case height matches the original 337CKH063M exactly at 0.846 inches. This substitute is appropriate for automotive and industrial applications requiring extended temperature range operation.

UPS1J331MHD (Nichicon UPS Series)

This substitute carries a product status designation of "Not For New Designs," indicating it is in mature or declining production phase. The lifetime rating of 3000 hours at 105°C provides a 1.5-fold improvement over the original part. This substitute is suitable only for replacement or maintenance applications where existing designs already incorporate this component. New designs should not select this part.

Frequently Asked Questions (FAQ)

Q: Can I use EEU-FR1J331 as a direct replacement for 337CKH063M?

A: Yes. Both parts share identical electrical specifications (330 µF, 63 V, ±20% tolerance), identical mechanical dimensions (0.492" diameter, 0.197" lead spacing), and identical compliance certifications (ROHS3, REACH Unaffected). The EEU-FR1J331 has a maximum height of 0.866 inches compared to 0.846 inches for the original; verify PCB clearance in your specific application.

Q: What is the difference between the Panasonic and Chemi-Con substitutes?

A: The Panasonic EEU-FR1J331 offers the highest lifetime rating (10000 hours at 105°C) and lowest impedance (33 mOhms), making it optimal for general-purpose applications. The Chemi-Con ELXZ630ELL331MK20S includes AEC-Q200 automotive certification and extends the lower operating temperature limit to -55°C, making it suitable for automotive and harsh environment applications.

Q: Why is the Nichicon UPS1J331MHD marked "Not For New Designs"?

A: This designation indicates the product is in mature production phase with limited future availability. While it remains functionally compatible with the 337CKH063M, it should be used only for replacement or maintenance of existing equipment. New product designs should select either the Panasonic or Chemi-Con alternatives.

Q: Are there any height clearance issues with these substitutes?

A: The Panasonic EEU-FR1J331 and Nichicon UPS1J331MHD have a maximum seated height of 0.866 inches, which is 0.020 inches taller than the original 337CKH063M and the Chemi-Con ELXZ630ELL331MK20S. Verify available PCB clearance before selecting these parts for space-constrained applications.

Q: Do all substitutes meet the same compliance requirements?

A: Yes. All three substitute parts are ROHS3 compliant and REACH unaffected, matching the original 337CKH063M. All carry ECCN EAR99 and HTSUS 8532.22.0020 classifications.

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