EEC-HW0D706 Equivalent & Substitute Parts

Part Overview

The EEC-HW0D706 is a 70 F supercapacitor (EDLC) rated at 2.1 V with radial, can-style through-hole termination manufactured by Panasonic Electronic Components. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement planning. The part features 100 mOhm ESR at 1 kHz and a rated lifetime of 1000 hours at 60°C, typical for energy storage and backup power applications in industrial and consumer electronics.

Key Parameters

Parameter	Value	Unit
Capacitance	70	F
Voltage - Rated	2.1	V
Tolerance	-20%, +40%	%
ESR @ Frequency	100 mOhm @ 1 kHz	mOhm
Lifetime @ Temperature	1000 Hrs @ 60°C	Hrs / °C
Mounting Type	Through Hole	—
Package / Case	Radial, Can	—
Lead Spacing	0.295" (7.50 mm)	in (mm)
Operating Temperature Range	-25°C ~ 60°C	°C
RoHS Status	RoHS Compliant	—

Substitute Part Grouping Explanation

Substitution of the EEC-HW0D706 is determined by the following critical parameters:

Electrical Compatibility:

Capacitance value within tolerance overlap (70 F nominal)
Rated voltage equal to or greater than 2.1 V
ESR performance suitable for the application frequency range
Lifetime rating at or above the operating temperature envelope

Mechanical Compatibility:

Through-hole radial, can-style package
Lead spacing of 0.295" (7.50 mm) for PCB footprint alignment
Physical dimensions permitting board-level installation

Regulatory & Compliance:

RoHS compliance status (RoHS3 or equivalent)
Moisture sensitivity level (MSL 1 - Unlimited)

The substitute part HB1840-2R5606-R from Eaton - Electronics Division meets these criteria with allowable parameter variations within engineering tolerance.

Parameter Comparison

Parameter	EEC-HW0D706 (Panasonic)	HB1840-2R5606-R (Eaton)	Compatibility Notes
Capacitance	70 F	60 F	14% lower; within tolerance band of main part
Voltage - Rated	2.1 V	2.5 V	Higher rating provides margin; direct substitution compatible
Tolerance	-20%, +40%	-10%, +30%	Eaton part has tighter tolerance; acceptable
ESR	100 mOhm @ 1 kHz	25 mOhm @ 100 Hz	Eaton part shows lower ESR; frequency measurement differs
Lifetime @ Temperature	1000 Hrs @ 60°C	1000 Hrs @ 70°C	Eaton part rated at higher temperature; equivalent or superior
Mounting Type	Through Hole	Through Hole	Identical
Package / Case	Radial, Can	Radial, Can	Identical
Lead Spacing	0.295" (7.50 mm)	0.295" (7.50 mm)	Identical; direct PCB footprint compatibility
Operating Temperature Range	-25°C ~ 60°C	-25°C ~ 70°C	Eaton part extends upper limit; compatible
RoHS Status	RoHS Compliant	ROHS3 Compliant	Both compliant; Eaton meets current standard
Moisture Sensitivity Level	MSL 1 (Unlimited)	MSL 1 (Unlimited)	Identical

Engineering Selection Recommendations

The HB1840-2R5606-R from Eaton - Electronics Division is an active product suitable for direct substitution of the obsolete EEC-HW0D706. Selection is based on the following factors:

Product Status: The Eaton part carries active product status, ensuring ongoing availability and supply chain stability compared to the obsolete Panasonic component.

Compliance: Both parts meet RoHS requirements. The Eaton part is ROHS3 compliant, satisfying current regulatory standards. Both components carry MSL 1 rating, indicating no moisture sensitivity constraints during storage or handling.

Electrical Parameters: The Eaton substitute provides a 2.5 V rated voltage, exceeding the 2.1 V requirement of the original part. The 60 F capacitance is 14% lower than the 70 F nominal value but falls within the -20% tolerance band of the main part, making it electrically compatible for most applications. The lower ESR (25 mOhm) represents improved performance characteristics.

Thermal Performance: The Eaton part is rated for 1000 hours at 70°C, compared to 60°C for the Panasonic part, providing superior thermal margin in elevated-temperature environments.

Mechanical Compatibility: Identical lead spacing (0.295" / 7.50 mm) and package style (radial, can) ensure direct PCB footprint compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the HB1840-2R5606-R replace the EEC-HW0D706 in existing designs without PCB modification?

A: Yes. Both parts share identical lead spacing (0.295" / 7.50 mm) and radial, can-style packaging. No PCB layout changes are required for mechanical installation.

Q: Why is the capacitance value different (60 F vs. 70 F)?

A: The 60 F Eaton part represents a 14% reduction from the 70 F nominal value. This difference falls within the -20% lower tolerance limit of the original Panasonic part, making it electrically compatible. Circuit designers should verify that the reduced capacitance meets application energy storage requirements.

Q: Does the higher voltage rating (2.5 V vs. 2.1 V) affect compatibility?

A: No. A higher voltage rating provides additional safety margin and does not compromise compatibility. The component will operate safely at voltages up to 2.5 V, making it suitable for 2.1 V applications.

Q: What is the significance of the different ESR measurement frequencies (1 kHz vs. 100 Hz)?

A: ESR varies with frequency. The Eaton part's 25 mOhm at 100 Hz represents lower impedance at lower frequencies compared to the Panasonic part's 100 mOhm at 1 kHz. For most applications, the Eaton part's lower ESR is advantageous, reducing heat generation and improving transient response.

Q: Is the Eaton part suitable for high-temperature applications?

A: The Eaton HB1840-2R5606-R is rated for operation up to 70°C with a 1000-hour lifetime, compared to 60°C for the Panasonic part. This makes it suitable for applications requiring extended thermal performance.

Q: Are there any supply chain advantages to using the Eaton substitute?

A: Yes. The Eaton part carries active product status with 258,625 units in stock, compared to the obsolete Panasonic part. This ensures reliable long-term availability and procurement stability.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message