ECO-S2HP121DA Equivalent & Substitute Parts

Part Overview

The ECO-S2HP121DA is a 120 µF, 500 V aluminum electrolytic capacitor manufactured by Panasonic Electronic Components in the TS-UP series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring high voltage energy storage and filtering. The part is currently obsolete, making equivalent substitutes necessary for ongoing system maintenance, repairs, and component sourcing.

Substiute Parts

ECO-S2HP121DA

Panasonic Electronic ComponentsIn Stock: 944ECO-S2HP121DA Datasheet

Current PartRFQ

380LX121M500K022

Cornell Dubilier Electronics (CDE)In Stock: 708380LX121M500K022 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ECO-S2HP121DA is determined by strict electrical and mechanical parameter matching:

Critical Matching Parameters:

• Capacitance: 120 µF (exact match required)
• Voltage Rating: 500 V (exact match required)
• Tolerance: ±20% (exact match required)
• ESR: 1.382 Ohm @ 120 Hz (exact match required)
• Lifetime: 3000 Hrs @ 85°C (exact match required)
• Operating Temperature: -25°C ~ 85°C (exact match required)
• Lead Spacing: 0.394" (10.00 mm) (exact match required)
• Package Type: Radial, Can - Snap-In (exact match required)
• Mounting Type: Through Hole (exact match required)

The substitute part 380LX121M500K022 manufactured by Cornell Dubilier Electronics (CDE) meets all critical electrical parameters and mechanical specifications. Physical height variation (1.260" vs. 1.181") is within acceptable tolerance for snap-in mounting applications and does not affect electrical performance or circuit board compatibility.

Parameter Comparison

Engineering Selection Recommendations

The 380LX121M500K022 from Cornell Dubilier Electronics is a direct functional equivalent to the obsolete ECO-S2HP121DA. All critical electrical specifications—capacitance, voltage rating, tolerance, ESR, lifetime, and operating temperature range—are identical. Mechanical compatibility is confirmed through matching lead spacing and snap-in package type.

The substitute part offers improved product status (Active vs. Obsolete) and enhanced regulatory compliance (ROHS3 Compliant vs. RoHS non-compliant), making it suitable for new designs and long-term component availability. The minor height increase (2 mm) is within acceptable mechanical tolerance for through-hole snap-in applications and does not compromise circuit board layout or thermal performance.

Frequently Asked Questions (FAQ)

Q: Can the 380LX121M500K022 be used as a direct replacement for the ECO-S2HP121DA?

A: Yes. All critical electrical parameters match exactly: 120 µF capacitance, 500 V voltage rating, ±20% tolerance, 1.382 Ohm ESR, 3000 Hrs @ 85°C lifetime, and -25°C ~ 85°C operating temperature. Lead spacing and snap-in package type are identical, ensuring mechanical compatibility.

Q: Does the height difference affect circuit board compatibility?

A: No. The 380LX121M500K022 is 2 mm taller (1.260" vs. 1.181") but remains within acceptable tolerance for through-hole snap-in mounting. This variation does not impact electrical performance, thermal management, or standard PCB layout requirements.

Q: What is the advantage of using the CDE substitute over the original Panasonic part?

A: The 380LX121M500K022 is currently in active production with confirmed inventory availability. It also meets ROHS3 compliance standards, whereas the original ECO-S2HP121DA is obsolete and RoHS non-compliant. These factors ensure long-term sourcing reliability and regulatory alignment.

Q: Are there any electrical performance differences between the two parts?

A: No. Both parts have identical capacitance, voltage rating, ESR, ripple current handling, and thermal lifetime specifications. They perform identically in circuit applications.

Q: What is the lead spacing specification, and why does it matter?

A: Both parts have 0.394" (10.00 mm) lead spacing, which is the distance between the two radial leads. This specification is critical for PCB hole pattern compatibility and ensures the substitute part fits existing circuit board designs without modification.