SPA121M0EB

Part Overview

The SPA121M0EB is a 120 µF, 2.5 V aluminum-polymer surface mount capacitor manufactured by Cornell Dubilier Electronics (CDE) in the 2917 (7343 Metric) package. This component is classified as obsolete, necessitating the identification of suitable substitute parts for continued circuit implementation and design updates. Equivalent alternatives maintain the same capacitance and tolerance specifications while offering enhanced electrical performance and extended operational lifetime.

Substiute Parts

SPA121M0EB

Cornell Dubilier Electronics (CDE)In Stock: 1153SPA121M0EB Datasheet

Current PartRFQ

EEF-LR0G121R

Panasonic Electronic ComponentsIn Stock: 3216EEF-LR0G121R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SPA121M0EB is based on the following critical parameters:

• Capacitance: 120 µF (exact match required)
• Package / Case: 2917 (7343 Metric) (exact match required for PCB compatibility)
• Mounting Type: Surface Mount (exact match required)
• Type: Polymer (exact match required)
• Tolerance: ±20% (exact match required)
• Voltage - Rated: 2.5 V minimum; substitute parts with equal or higher voltage ratings are acceptable
• ESR: 9 mOhm (identical performance acceptable)
• RoHS Status: ROHS3 Compliant (environmental compliance requirement)

The EEF-LR0G121R meets all substitution criteria with identical capacitance, tolerance, package, and ESR specifications. The substitute provides higher voltage rating (4 V), extended lifetime (2000 Hrs @ 105°C vs. 1000 Hrs), and improved ripple current handling (6.3 A @ 100 kHz vs. 3 A @ 100 kHz), with active product status and full RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

The EEF-LR0G121R is the approved substitute for the obsolete SPA121M0EB. Selection criteria are based on the following factors:

Product Status: The SPA121M0EB is obsolete; the EEF-LR0G121R carries active product status, ensuring long-term supply chain availability and manufacturing support.

Environmental Compliance: Both parts maintain ROHS3 compliance, satisfying regulatory requirements for hazardous substance restrictions. The Panasonic substitute additionally carries REACH Unaffected status.

Electrical Equivalence: Identical capacitance (120 µF), tolerance (±20%), ESR (9 mOhm), and package specifications (2917/7343 Metric) ensure direct functional replacement without circuit redesign.

Operational Advantages: The higher voltage rating (4 V vs. 2.5 V) provides additional voltage margin in the circuit application. Extended lifetime rating (2000 Hrs @ 105°C vs. 1000 Hrs) and increased ripple current capability (6.3 A vs. 3 A @ 100 kHz) support enhanced reliability in demanding applications.

Physical Compatibility: Identical footprint dimensions and lower profile height (1.00mm vs. 1.80mm) ensure PCB-level compatibility with potential space optimization benefit.

Frequently Asked Questions (FAQ)

Q: Can the EEF-LR0G121R directly replace the SPA121M0EB without circuit modifications? A: Yes. Both parts share identical capacitance (120 µF), tolerance (±20%), ESR (9 mOhm), and 2917 (7343 Metric) package specifications. The substitute's higher voltage rating (4 V) is suitable for circuits designed for 2.5 V operation.

Q: Does the 4 V rating of the EEF-LR0G121R affect circuit performance? A: No. A capacitor with higher voltage rating than required operates normally at lower voltage. The 4 V rating provides additional voltage stress margin without altering electrical behavior in a 2.5 V application.

Q: Are there physical clearance concerns with the lower profile of the EEF-LR0G121R? A: No. The substitute height (1.00mm) is lower than the original (1.80mm), providing additional PCB clearance. All other footprint dimensions remain identical.

Q: What is the significance of the extended lifetime rating on the EEF-LR0G121R? A: The substitute offers 2000 Hrs @ 105°C versus 1000 Hrs for the original. Extended operational lifetime improves reliability under sustained elevated temperature conditions, beneficial for high-temperature applications or long-service-life designs.

Q: Are packaging format differences between the CDE and Panasonic parts? A: The CDE part is supplied in standard packaging; the Panasonic EEF-LR0G121R is supplied in Tape & Reel (TR) format. Tape & Reel packaging is standard for high-volume production assembly.

Q: What compliance certifications apply to the EEF-LR0G121R? A: The substitute carries ROHS3 compliance (restricts hazardous substances) and REACH Unaffected status (European chemical regulations). Both certifications satisfy current environmental and regulatory requirements for component supply.