EEF-SL0D221R Equivalent & Substitute Parts

Part Overview

The EEF-SL0D221R is a 220 µF, 2 V aluminum polymer capacitor in 2917 (7343 Metric) surface mount package manufactured by Panasonic Electronic Components. This part operates across -40°C to 105°C with 1000 hours lifetime rating at 105°C and 9 mOhm ESR. The product is currently obsolete, necessitating identification of equivalent and substitute components for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Capacitance	220 µF
Voltage Rating	2 V
Tolerance	±20%
ESR (Equivalent Series Resistance)	9 mOhm
Lifetime @ Temperature	1000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 105°C
Package / Case	2917 (7343 Metric)
Mounting Type	Surface Mount
Type	Polymer
Applications	General Purpose

Substitute Part Grouping Explanation

Substitution eligibility for the EEF-SL0D221R is determined by the following criteria:

Direct Substitutes (Same Electrical Specifications): Parts maintaining identical capacitance (220 µF), voltage rating (2 V), tolerance (±20%), and ESR (9 mOhm) with equivalent or superior lifetime ratings and compatible package dimensions.

Upgrade Substitutes (Higher Voltage Rating): Parts with identical capacitance and tolerance but rated for higher voltage (2.5 V or 4 V), maintaining the same ESR and package footprint. These provide enhanced voltage margin while preserving electrical performance in 2 V applications.

Similar Substitutes (Different ESR or Lifetime): Parts with matching capacitance, voltage, and tolerance but differing ESR values (15 mOhm) or lifetime ratings (1000 Hrs vs. 2000 Hrs), suitable where thermal performance requirements are less stringent.

Parametric Equivalents (Different Manufacturer): Non-Panasonic components meeting identical electrical and mechanical specifications, enabling multi-source procurement strategies.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	ESR	Lifetime @ 105°C	Operating Temp	Height (Max)	Status	Packaging
EEF-SL0D221R	Panasonic	SP-Cap SL	220 µF	2 V	9 mOhm	1000 Hrs	-40°C ~ 105°C	0.075" (1.90mm)	Obsolete	Bulk
EEF-SX0D221ER	Panasonic	SP-Cap SX	220 µF	2 V	9 mOhm	2000 Hrs	-55°C ~ 105°C	0.079" (2.00mm)	Active	Tape & Reel
EEF-SX0D221R	Panasonic	SP-Cap SX	220 µF	2 V	9 mOhm	2000 Hrs	-55°C ~ 105°C	0.079" (2.00mm)	Not For New Designs	Tape & Reel
EEF-SX0E221ER	Panasonic	SP-Cap SX	220 µF	2.5 V	9 mOhm	2000 Hrs	-55°C ~ 105°C	0.079" (2.00mm)	Active	Tape & Reel
EEF-SX0E221R	Panasonic	SP-Cap SX	220 µF	2.5 V	9 mOhm	2000 Hrs	-55°C ~ 105°C	0.079" (2.00mm)	Not For New Designs	Tape & Reel
EEF-SX0G221ER	Panasonic	SP-Cap SX	220 µF	4 V	9 mOhm	2000 Hrs	-55°C ~ 105°C	0.079" (2.00mm)	Active	Tape & Reel
EEF-CX0D221R	Panasonic	SP-Cap CX	220 µF	2 V	15 mOhm	2000 Hrs	-55°C ~ 105°C	0.075" (1.90mm)	Active	Tape & Reel
EEF-UD0D221R	Panasonic	SP-Cap UD	220 µF	2 V	15 mOhm	1000 Hrs	-40°C ~ 105°C	0.118" (3.00mm)	Obsolete	Cut Tape & Digi-Reel
ECASD40D227M009K00	Murata Electronics	ECAS	220 µF	2 V	9 mOhm	1000 Hrs	-40°C ~ 105°C	0.075" (1.90mm)	Active	Cut Tape & Digi-Reel

Engineering Selection Recommendations

Primary Recommendation - Direct Substitute: EEF-SX0D221ER is the preferred direct replacement. This part maintains identical electrical specifications (220 µF, 2 V, 9 mOhm ESR) while offering doubled lifetime (2000 Hrs vs. 1000 Hrs @ 105°C) and extended operating temperature range (-55°C to 105°C). Product status is Active, ensuring long-term availability. RoHS3 and REACH compliance are confirmed.

Alternative Direct Substitute: ECASD40D227M009K00 (Murata Electronics) provides parametric equivalence with identical electrical and mechanical specifications. This enables multi-source procurement and supply chain diversification. Active product status and RoHS3 compliance are confirmed. Moisture sensitivity level is 3 (168 Hours), requiring controlled storage conditions.

Voltage Upgrade Path: EEF-SX0E221ER (2.5 V) and EEF-SX0G221ER (4 V) are suitable where circuit design permits higher voltage ratings. Both maintain 9 mOhm ESR, 2000 Hrs lifetime, and Active status. These upgrades provide enhanced voltage margin and are recommended for new designs.

Not Recommended for New Designs: EEF-SX0D221R and EEF-SX0E221R carry "Not For New Designs" status and should be avoided in new product development.

Avoid Obsolete Parts: EEF-UD0D221R is obsolete and should not be selected for new applications.

Frequently Asked Questions (FAQ)

Q: Can EEF-SX0D221ER directly replace EEF-SL0D221R without circuit modification?

A: Yes. Both parts share identical capacitance (220 µF), voltage rating (2 V), tolerance (±20%), and ESR (9 mOhm). The EEF-SX0D221ER offers superior lifetime (2000 Hrs vs. 1000 Hrs @ 105°C) and wider operating temperature range (-55°C to 105°C vs. -40°C to 105°C). No circuit changes are required.

Q: What is the difference between EEF-SX0D221ER and EEF-SX0D221R?

A: Both are identical electrically and mechanically. The primary difference is product status: EEF-SX0D221ER is Active (recommended), while EEF-SX0D221R is Not For New Designs. For new applications, select EEF-SX0D221ER.

Q: Can I use EEF-SX0E221ER (2.5 V) or EEF-SX0G221ER (4 V) in place of the 2 V rated EEF-SL0D221R?

A: Yes, if circuit voltage does not exceed 2 V. Higher voltage-rated capacitors are backward compatible in lower voltage applications. Both parts maintain 9 mOhm ESR and 2000 Hrs lifetime. This substitution is suitable for new designs.

Q: Why does EEF-CX0D221R have 15 mOhm ESR instead of 9 mOhm?

A: EEF-CX0D221R belongs to the SP-Cap CX series, which has different internal construction than the SL and SX series. The higher ESR (15 mOhm) results in lower ripple current capability (5.1 A @ 100 kHz vs. 6.3 A @ 100 kHz). Select this part only if ESR and ripple current specifications permit.

Q: What is the packaging difference between Tape & Reel and Cut Tape & Digi-Reel?

A: Tape & Reel (TR) packaging is standard for high-volume automated assembly. Cut Tape & Digi-Reel (CT) is suitable for lower volumes or mixed component orders. Both formats contain identical components; packaging choice depends on assembly process requirements and order quantities.

Q: Is ECASD40D227M009K00 (Murata) fully compatible with EEF-SL0D221R (Panasonic)?

A: Yes, for electrical and mechanical compatibility. Both share identical capacitance, voltage, tolerance, ESR, lifetime, and package dimensions. Murata's part carries Moisture Sensitivity Level 3 (168 Hours), requiring controlled storage. Verify with your supply chain and assembly process before qualification.

Q: Why is EEF-UD0D221R listed as obsolete?

A: EEF-UD0D221R is an older generation part with lower lifetime rating (1000 Hrs vs. 2000 Hrs) and greater height (3.00mm vs. 1.90mm). It has been superseded by the SX and CX series. Do not select for new applications.

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