EECHW0D306 Panasonic Capacitor (Capacitor, Polarized Radial Diameter) In Stock
Panasonic EECHW0D306 is an electric double-layer supercapacitor (EDLC) from the HW Series with 30 F capacitance at 2.3 V rated voltage in an 18 mm diameter radial leaded through-hole package with activated carbon dielectric. It offers +40%/-20% capacitance tolerance and RoHS-compliant construction. Available in stock with worldwide shipping.
- Manufacturer
- Panasonic
- Package
- Capacitor, Polarized Radial Diameter
- Pin Count
- 2
- Lifecycle
- OBSOLETE
- Datasheet
- EECHW0D306 Datasheet PDF
- Category
- Capacitor
- Temp Range
- -25.0°C to 60.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of EECHW0D306?
- 30 F capacitance at 2.3 V with activated carbon electric double-layer construction delivers high energy density for backup power and energy harvesting applications
- 18 mm diameter radial leaded through-hole package allows straightforward PCB mounting with secure mechanical support for industrial and automotive backup designs
- +40%/-20% capacitance tolerance and RoHS/REACH compliant materials ensure design flexibility and regulatory suitability for global markets
What is EECHW0D306 used for?
The EECHW0D306 is suited for energy storage and backup power applications in smart meters, IoT gateways, and industrial automation equipment that require instant energy delivery from a 30 F, 2.3 V supercapacitor. Its high capacitance enables bridging power supply interruptions, supporting real-time clock backup, data retention, and hold-up circuits during brief power outages. The radial through-hole form factor and activated carbon EDLC technology also make it effective for peak power assist in handheld tools and embedded systems.
What are the specifications of EECHW0D306?
| Pbfree Code | Yes |
| Reach Compliance Code | Compliant |
| YTEOL | 0 |
| Capacitance | 30000000 µF |
| Capacitor Type | ELECTRIC DOUBLE LAYER CAPACITOR |
| Diameter | 18mm |
| Dielectric Material | ACTIVATED CARBON |
| JESD-609 Code | e3 |
| Mounting Feature | THROUGH HOLE MOUNT |
| Negative Tolerance | 20% |
| Package Shape | CYLINDRICAL PACKAGE |
| Package Style | Radial |
| Positive Tolerance | 40% |
| Rated (DC) Voltage (URdc) | 2.3V |
| Surface Mount | NO |
| Terminal Finish | Tin (Sn) |
| Terminal Pitch | 7.5mm |
| Terminal Shape | WIRE |
| Package | Capacitor, Polarized Radial Diameter |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8532.29.00.40 |
Where can I find the EECHW0D306 datasheet?
EECHW0D306 Datasheet DownloadOfficial datasheet from Panasonic
What are equivalent replacements for EECHW0D306?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What are the key electrical ratings of the Panasonic EECHW0D306 supercapacitor?
The EECHW0D306 is rated at 30 F capacitance and 2.3 V maximum operating voltage with a +40%/-20% tolerance. It uses an electric double-layer (EDLC) construction with activated carbon dielectric, enabling rapid charge and discharge cycles suitable for backup power, energy harvesting, and peak power buffering in embedded systems.
How does the 30 F capacitance of EECHW0D306 compare to conventional electrolytic capacitors for backup applications?
At 30 F, the EECHW0D306 stores dramatically more energy than typical electrolytic capacitors in the same voltage class, which typically reach only hundreds of microfarads. This allows it to sustain loads for seconds to minutes during a power interruption, making it practical for real-time clock backup, data-save circuits, and hold-up power in systems that draw up to tens of milliamperes at 2.3 V.
What PCB mounting method does the EECHW0D306 use and what are its physical dimensions?
The EECHW0D306 uses a radial leaded through-hole mounting style with an 18 mm body diameter, fitting standard radial capacitor footprints on industrial PCBs. This through-hole format provides robust mechanical anchoring for assemblies subject to vibration, making it preferable over surface mount alternatives in environments such as industrial motor drives and automotive backup modules.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
About Panasonic
Panasonic is a leading electronic component manufacturer. FindMyChip sources Panasonic ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”
You May Also Like
UQCFVA220JAT2A
AVX
Capacitor
UQCFVA201JAT2A
AVX
Capacitor
UQCFVA200JAT2A
AVX
Capacitor
UQCFVA1R8BAT2A
AVX
Capacitor
UQCFVA1R5BAT2A
AVX
Capacitor
UQCFVA1R2BAT2A
AVX
Capacitor
UQCFVA1R1BAT2A
AVX
Capacitor
UQCFVA1R0BAT2A
AVX
Capacitor
UQCFVA181JAT2A
AVX
Capacitor
UQCFVA180JAT2A
AVX
Capacitor
UQCFVA151JAT2A
AVX
Capacitor
UQCFVA150JAT2A
AVX
Capacitor
UQCFVA121JAT2A
AVX
Capacitor
UQCFVA120JAT2A
AVX
Capacitor
UQCFVA101JAT2A
AVX
Capacitor
UQCFVA100JAT2A
AVX
Capacitor
UQCFVA0R9BAT2A
AVX
Capacitor
UQCFVA0R8BAT2A
AVX
Capacitor
UQCFVA0R7BAT2A
AVX
Capacitor
UQCFVA0R6BAT2A
AVX
Capacitor
UQCFVA0R5BAT2A
AVX
Capacitor
UQCFVA0R4BAT2A
AVX
Capacitor
UQCFVA0R3BAT2A
AVX
Capacitor
UQCFVA0R2BAT2A
AVX
Capacitor