Panasonic EEF-SD0J121R Equivalent & Substitute Parts

Part Overview

The Panasonic EEF-SD0J121R is a 120 µF, 6.3 V aluminum polymer surface mount capacitor in the 2917 (7343 Metric) package. This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity. The part belongs to Panasonic's SP-Cap SD series and is suitable for general purpose applications requiring stable capacitance and low ESR characteristics.

Substiute Parts

EEF-SD0J121R

Panasonic Electronic ComponentsIn Stock: 5354EEF-SD0J121R Datasheet

Current PartRFQ

EEF-SX0J121E7

Panasonic Electronic ComponentsIn Stock: 1840EEF-SX0J121E7 Datasheet

DirectRFQ

EEF-CX0J121R

Panasonic Electronic ComponentsIn Stock: 27764EEF-CX0J121R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the EEF-SD0J121R is determined by strict equivalence in the following parameters: capacitance value (120 µF), voltage rating (6.3 V), tolerance (±20%), package type (2917/7343 Metric), and mounting configuration (surface mount). All identified substitutes maintain these core electrical and mechanical specifications.

Two substitute parts are identified:

Direct Substitute (EEF-SX0J121E7): Maintains identical capacitance, voltage, tolerance, package, and mounting specifications. Differs in series designation (SX vs. SD), product status (active vs. obsolete), lifetime rating (2000 Hrs vs. 1000 Hrs @ 105°C), and operating temperature range (-55°C ~ 105°C vs. -40°C ~ 105°C).

Similar Substitute (EEF-CX0J121R): Maintains identical capacitance, voltage, tolerance, package, and mounting specifications. Differs in series designation (CX vs. SD), product status (active vs. obsolete), ESR (15 mOhm vs. 7 mOhm), lifetime rating (2000 Hrs vs. 1000 Hrs @ 105°C), and operating temperature range (-55°C ~ 105°C vs. -40°C ~ 105°C).

Parameter Comparison

Engineering Selection Recommendations

EEF-SX0J121E7 is the preferred substitute. This part maintains identical ESR (7 mOhm) and electrical performance characteristics while offering extended lifetime (2000 Hrs vs. 1000 Hrs @ 105°C), wider operating temperature range (-55°C to 105°C), and active product status. Both parts carry ROHS3 compliance and REACH unaffected certification, ensuring regulatory alignment with current manufacturing standards.

EEF-CX0J121R is an alternative substitute suitable for applications where ESR tolerance is not critical. This part provides extended lifetime and active status but exhibits higher ESR (15 mOhm vs. 7 mOhm), which may impact performance in ripple current-sensitive applications. The part maintains full regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can EEF-CX0J121R replace EEF-SD0J121R in all applications?

A: EEF-CX0J121R maintains identical capacitance, voltage, tolerance, and package specifications. However, the ESR difference (15 mOhm vs. 7 mOhm) affects ripple current handling capability. Applications requiring the full 4.6 A ripple current specification at 100 kHz should use EEF-SX0J121E7 instead.

Q: What is the physical difference between these parts?

A: All three parts use the 2917 (7343 Metric) package with identical land size (7.30mm x 4.30mm). Height differences exist: EEF-SD0J121R (2.80mm), EEF-SX0J121E7 (2.00mm), and EEF-CX0J121R (1.90mm). These height variations do not affect PCB footprint compatibility.

Q: Are the substitute parts pin-compatible?

A: Yes. All parts are surface mount components in the same 2917 package with identical land pattern dimensions (0.287" L x 0.169" W / 7.30mm x 4.30mm). Direct PCB substitution is possible without layout modification.

Q: Why is the main part obsolete?

A: The EEF-SD0J121R belongs to the SP-Cap SD series, which has been superseded by active series (SX and CX). Panasonic continues to support equivalent functionality through these active product lines.

Q: Do the substitute parts meet current compliance requirements?

A: Both EEF-SX0J121E7 and EEF-CX0J121R are ROHS3 compliant and REACH unaffected, meeting current regulatory standards. The main part (EEF-SD0J121R) compliance status is not specified in available documentation.