EEC-HW0D306 Equivalent & Substitute Parts

Part Overview

The Panasonic EEC-HW0D306 is a 30 F supercapacitor (EDLC) rated at 2.3 V with through-hole radial can packaging. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part features 100 mOhm ESR at 1 kHz and a rated lifetime of 1000 hours at 60°C, with PC pin termination suitable for through-hole assembly applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	EEC-HW0D306
Manufacturer	Panasonic Electronic Components
Capacitance	30 F
Voltage - Rated	2.3 V
Tolerance	-20%, +40%
ESR (Equivalent Series Resistance)	100 mOhm @ 1 kHz
Lifetime @ Temperature	1000 Hrs @ 60°C
Mounting Type	Through Hole
Package / Case	Radial, Can
Lead Spacing	0.295" (7.50 mm)
Operating Temperature	-25°C ~ 60°C
Product Status	Obsolete
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution for the EEC-HW0D306 is determined by the following critical parameters:

Capacitance value: 30 F (exact match required)
Voltage rating: Minimum 2.3 V (higher ratings acceptable for backward compatibility)
Mounting type: Through hole with radial can package
Lead spacing: 0.295" (7.50 mm) for PCB compatibility
Termination: PC pins
Physical form factor: Radial can configuration

Substitute parts must maintain the same capacitance value and through-hole mounting configuration. Voltage ratings of 2.5 V, 2.7 V, and 3 V are acceptable as they provide higher voltage margins while maintaining electrical compatibility in 2.3 V applications. ESR values, lifetime ratings, and operating temperature ranges may vary based on manufacturer specifications and series design improvements.

Parameter Comparison

Parameter	EEC-HW0D306 (Main)	HB1635-2R5356-R	MAL222090002E3	MAL222091007E3	MAL223091007E3	MAL223591007E3	TPLH-2R7/30WR16X26
Manufacturer	Panasonic	Eaton	Vishay	Vishay	Vishay	Vishay	Tecate Group
Capacitance	30 F	35 F	30 F	30 F	30 F	30 F	30 F
Voltage - Rated	2.3 V	2.5 V	2.7 V	2.7 V	3 V	3 V	2.7 V
Tolerance	-20%, +40%	-10%, +30%	-20%, +50%	-20%, +50%	-20%, +50%	-20%, +50%	-
ESR (Equivalent Series Resistance)	100 mOhm @ 1 kHz	30 mOhm @ 100 Hz	26 mOhm	13 mOhm @ 1 kHz	17 mOhm @ 1 kHz	17 mOhm @ 1 kHz	16 mOhm @ 1 kHz
Lifetime @ Temperature	1000 Hrs @ 60°C	1000 Hrs @ 70°C	1000 Hrs @ 85°C	1000 Hrs @ 85°C	2000 Hrs @ 85°C	2000 Hrs @ 85°C	1500 Hrs @ 85°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Can	Radial, Can	Radial, Can	Radial, Can	Radial, Can	Radial, Can	Radial, Can
Lead Spacing	0.295" (7.50 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)
Operating Temperature	-25°C ~ 60°C	-25°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts are active products with current manufacturing support, providing design continuity for the obsolete EEC-HW0D306. Selection among substitutes depends on application-specific requirements:

Direct Capacitance Match (30 F): MAL222090002E3, MAL222091007E3, MAL223091007E3, MAL223591007E3, and TPLH-2R7/30WR16X26 maintain the exact 30 F capacitance value. These parts are preferred when circuit design calculations are based on the original 30 F specification.

Higher Capacitance (35 F): HB1635-2R5356-R offers 35 F capacitance with 2.5 V rating. This part is suitable for applications where increased energy storage capacity is beneficial and circuit design permits the higher capacitance value.

Voltage Rating Considerations: All substitute parts feature voltage ratings equal to or higher than the original 2.3 V specification. Parts rated at 2.7 V and 3 V provide enhanced voltage margins and extended operating temperature ranges (-40°C to 85°C versus -25°C to 60°C for the original part).

ESR Performance: Substitute parts exhibit lower ESR values (13 mOhm to 30 mOhm) compared to the original 100 mOhm specification, resulting in improved power delivery characteristics and reduced thermal dissipation.

Compliance: All substitute parts meet ROHS3 compliance standards, exceeding the RoHS compliance of the original part. Vishay parts and Tecate Group part include REACH Unaffected status where applicable.

Frequently Asked Questions (FAQ)

Q: Can I use a 35 F supercapacitor (HB1635-2R5356-R) as a direct replacement for the 30 F EEC-HW0D306?

A: The HB1635-2R5356-R is electrically compatible in applications where increased capacitance does not negatively impact circuit behavior. However, if circuit design calculations are based on the 30 F value, the higher capacitance may alter performance characteristics. Verify circuit tolerance to capacitance variation before substitution.

Q: Are the physical dimensions of substitute parts compatible with the original PCB layout?

A: All substitute parts maintain the same lead spacing of 0.295" (7.50 mm) and radial can package configuration, ensuring PCB footprint compatibility. However, individual diameter and height dimensions vary. Verify specific dimensional requirements against your PCB layout before final selection.

Q: What is the significance of lower ESR values in substitute parts?

A: Lower ESR (Equivalent Series Resistance) in substitute parts improves power delivery efficiency and reduces internal heating during charge and discharge cycles. This enhancement is beneficial for high-current applications and extends component operational life.

Q: Can substitute parts rated at 3 V be used in a 2.3 V circuit?

A: Yes. Parts rated at higher voltages (2.5 V, 2.7 V, 3 V) are backward compatible with 2.3 V applications. The higher voltage rating provides additional safety margin and does not degrade performance in lower-voltage circuits.

Q: Which substitute part offers the longest operational lifetime?

A: MAL223091007E3 and MAL223591007E3 both provide 2000 hours lifetime at 85°C, compared to 1000 hours at 60°C for the original part. These Vishay ENYCAP™ series parts offer extended operational life under elevated temperature conditions.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts meet ROHS3 compliance standards, which exceed the RoHS compliance of the original Panasonic part.

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