# Supercapacitor, 35000 µF, 4.5 V, Solder, ± 20%

![Product image](https://novapart.co/image/farnell:4706264/)

**URL**: https://novapart.co/products/DMHA14R5V353M4ATA0/supercapacitor-35000-f-45-v-solder-20
**SKU**: DMHA14R5V353M4ATA0
**Manufacturer**: CAP-XX
**Category**: Passive Components || Capacitors || Supercapacitors || EDLC - Electric Double Layer Capacitors
**Price**: €3.4500
**Stock**: 10+
**Lead Time**: 64 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Esr | 0.5ohm |
| Svhc | No SVHC (21-Jan-2025) |
| Capacitance | 35000µF |
| Voltage(Dc) | 4.5V |
| Lead Spacing | - |
| Product Range | DMH Series |
| Product Width | 20mm |
| Qualification | - |
| Product Height | 0.5mm |
| Product Length | 20mm |
| Product Diameter | - |
| Capacitor Mounting | Surface Mount |
| Capacitor Terminals | Solder |
| Capacitance Tolerance | ± 20% |
| Lifetime @ Temperature | - |
| Capacitor Case / Package | SMD |
| Operating Temperature Max | 85°C |
| Operating Temperature Min | -40°C |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:4706264/)

## **DATASHEET PRELIMINARY** 

## **DMHA14R5V353M4ATA0, 4.5V, 35mF, 600m**  **, -40**  **C to +85**  **C 2.25V, 140mF, 150m**  **, -40**  **C to +85**  **C** 

Revision 2.1, May 2024 

Note: Product not yet in mass production. Specification may change without notice 

## **Electrical Specifications** 

**Table 1: Absolute Maximum Ratings** 

|**Parameter**|**Name**|**Conditions**|**Min**|**Typical**|**Max**|**Units**|
|---|---|---|---|---|---|---|
|**Terminal Voltage**<br>~~a~~|Vpeak<br>~~a~~|~~a~~|~~a~~|~~a~~|4.5<br>~~a~~|V<br>~~a~~|
|**Temperature**<br>~~a~~|Tmax<br>~~a~~|~~a~~|-40<br>~~a~~|~~a~~|+85<br>~~a~~|°C<br>~~a~~|



## **Table 2: Electrical Characteristics** 

Note that the DMHA14R5V353M4ATA0 is actually 2 independent cells, with 2 terminals for each cell. Referring to the mechanical drawing, for one cell the negative terminal is labelled (-) and the positive terminal labelled (bal 1), while for the other cell the negative terminal is labelled (bal 2) and the positive terminal labelled (+). The user can connect the 2 cells in series or in parallel, or as 2 individual supercapacitor cells. If connected in series then connect (bal 1) to (bal 2). If connected in parallel then (-) must be connected to (bal 2) and (bal 1) must be connected to (+). The table gives the electrical characteristics for the different configurations. 

|**Parameter**<br>~~eS.~~|**Name**<br>~~eS.~~|**Conditions**<br>~~eS.See~~|**Min**<br>~~See~~|**Typical**<br>~~See~~|**Max**<br>~~See~~|**Units**<br>~~See~~|
|---|---|---|---|---|---|---|
|As 2 cells connected in series<br>~~eS.See~~|||||||
|**Terminal Voltage**<br>~~eS.~~|Vn<br>~~eS.~~|~~eS. See~~|0<br>~~See~~|~~See~~|4.5<br>~~See~~|V<br>~~See~~|
|**Capacitance**|C|DC, 23°C|28|35|42|mF|
|**ESR**|ESR|AC, 1kHz||500|600|m|
|**Leakage Current**|IL|4.5V, 23°C<br>120hrs|||2|µA|
|**RMS Current**|IRMS|23°C|||1|A|
|**Peak Current1 **|IP|23°C|||5|A|



1Non-repetitive current, single pulse to discharge fully charged supercapacitor. 

© CAP-XX Pty Limited 2023 | Tel +61 2 9420 0690 | www.cap-xx.com 

Page **1** of **8** 

**==> picture [444 x 312] intentionally omitted <==**

**----- Start of picture text -----**<br>
||||||||
|---|---|---|---|---|---|---|
|Parameter|Name|Conditions|Min|Typical|Max|Units|
|As 2 cells connected in parallel|
|Terminal Voltage|Vn|0|2.25|V|
|Capacitance|C|DC, 23°C|112|140|168|mF|
|ESR|ESR|AC, 1kHz|130|150|m|
|2.25V, 23°C|
|Leakage Current|IL|4|µA|
|120hrs|
|RMS Current|IRMS|25°C|2|A|
|Peak Current|[1 ]|IP|23°C|10|A|
|As 2 individual cells, specification for 1 cell.|
|Terminal Voltage|Vn|0|2.25|V|
|Capacitance|C|DC, 23°C|56|70|84|mF|
|ESR|ESR|AC, 1kHz|250|300|m|
|2.25V, 23°C|
|Leakage Current|IL|2|µA|
|120hrs|
|RMS Current|IRMS|25°C|1|A|
|Peak Current|[1]|IP|23°C|5|A|

**----- End of picture text -----**<br>


1Non-repetitive current, single pulse to discharge fully charged supercapacitor. 

**Table 3: Mechanical specification** 

**==> picture [414 x 72] intentionally omitted <==**

**----- Start of picture text -----**<br>
|||||||||
|---|---|---|---|---|---|---|---|
|Length (mm)|Width (mm)|Thickness “T” (mm)|Weight (gm)|
|20 ± 0.5mm|20 ± 0.5|0.5 (max)|0.23|
|Package mechanical drawing|*|Length|of|area|in|contact|Recommended landing pads|

**----- End of picture text -----**<br>


**Mechanical drawing and recommended landing pad for DMHA14R5V353M4ATA0** 

© CAP-XX Pty Limited 2024 | Tel +61 2 9420 0690 | www.cap-xx.com 

Page **2** of **8** 

## **Effective Capacitance** 

**Figure 1: Effective Capacitance** 

Fig 1 shows the effective capacitance for the DMH @ 23°C. This shows that for a 1msec PW, you will measure 14% of DC capacitance or 4.9mF. At 10msecs you will measure 43% of the DC capacitance, and at 100msecs you will measure 80% of DC capacitance. Ceffective is a time domain representation of the supercapacitor's frequency response. If, for example, you were calculating the voltage drop if the supercapacitor was supporting 1A for 10msecs, then you would use the Ceff(10msecs) = 43% of DC capacitance = 15.1mF, so Vdrop = 1A x ESR + 1A x duration/C = 1A x 600mΩ + 1A x 10ms / 15.1mF = 1.26V. The next section on pulse response shows how the effective capacitance is sufficient for even short pulse widths. 

© CAP-XX Pty Limited 2024 | Tel +61 2 9420 0690 | www.cap-xx.com 

Page **3** of **8** 

## **DC Capacitance variation with temperature** 

**Figure 2: Capacitance change with temperature** 

Fig 2 shows that typically the capacitance at -40°C is ~0.75 x C at room temp, and that C at 85ºC is ~1.1 x C at room temperature. 

## **ESR variation with temperature** 

**Figure 3: ESR change with temperature** 

Fig 3 shows that typically the ESR at -40°C is ~5.2 x ESR at room temp, and that ESR at 80ºC is ~0.53 x ESR at room temperature. 

© CAP-XX Pty Limited 2024 | Tel +61 2 9420 0690 | www.cap-xx.com 

Page **4** of **8** 

## **Leakage Current** 

**Fig 4: Leakage Current** 

Fig 4 shows the leakage current for DMHA14R5V353M4ATA0 at room temperature. The leakage current decays over time, and the equilibrium value leakage current will be reached after ~120hrs at room temperature. The typical equilibrium leakage current is 1µA at room temperature. 

## **Charge Current** 

**Fig 5: Charging an DMHA14R5V353M4ATA0 with low current** 

The corollary to the slow decay in leakage currents shown in Fig 4 is that charging a supercapacitor at very low currents takes longer than theory predicts. At higher charge currents, the charge rate is as theory predicts. For example, charging a single cell, it should take 0.070F x 2.2V / 5µA = 8.6 hrs to charge a 70mF supercapacitor to 2.2V at 5µA, but Fig 5 shows it took 13.8hrs. 

© CAP-XX Pty Limited 2024 | Tel +61 2 9420 0690 | www.cap-xx.com 

Page **5** of **8** 

## **Packaging** 

**==> picture [363 x 231] intentionally omitted <==**

**----- Start of picture text -----**<br>
Minimum Packaging Quantity (500pcs)<br>Cover Tray<br>Outer Package<br>Sealed plastic bag<br>10 Trays<br>Total 500pcs<br> ARARAAAY<br>500  s 500  s<br>LLY fl<br>{YY oOo |<br>     m m s                  500  s<br>**----- End of picture text -----**<br>


## **DMHA14R5V353M4ATA0** 

CAP-XX uses sustainable packaging. All our packaging material are recyclable. The clear product trays are made from Polystyrene. ESD safe bubble wraps and bags are made from LDPE. The shipping boxes are corrugated cardboard. Please ensure all packaging is disposed in accordance with the relevant recycling procedures of the region where CAP-XX products are used. 

© CAP-XX Pty Limited 2024 | Tel +61 2 9420 0690 | www.cap-xx.com 

Page **6** of **8** 

## **Storage** 

CAP-XX recommends storing supercapacitors in their original packaging in an air-conditioned room, preferably at < 30C and < 60% relative humidity. CAP-XX supercapacitors can be stored at any temperature not exceeding their maximum operating temperature but storage at continuous high temperature and humidity is not recommended and will cause premature ageing. 

Do not store supercapacitors in the following environments: 

- High temperature / high humidity 

- Direct sunlight 

- In direct contact with water, salt, oil or other chemicals 

- In direct contact with corrosive materials, acids, alkalis or toxic gases 

- Dusty environment 

- In environments subjected to shock and vibration 

## **Cautions before use** 

CAP-XX s   r       ors  r  “  r  d   ” d r     rod    o ,   d   v    d f   d  o  r   ,  s s ow by the positive terminal marked on the face of the product. Reversing the polarity of the device will not damage the device but may cause a rise in the ESR and will void the warranty. Please verify the orientation of the supercapacitor in accordance with the product markings before assembly. 

CAP-XX supercapacitors are heat-sensitive. Over-heating of the supercapacitor may result in a degradation of performance and useful life. 

CAP-XX supercapacitors must only be used within their rated voltage range. Over-voltage may cause swelling and eventually, product failure. 

CAP-XX supercapacitors are fully discharged when shipped. Devices should be handled and soldered in a discharged state. 

## **Soldering and Assembling** 

CAP-XX supercapacitors are designed for direct soldering onto the PCB. Soldering the terminals to the PCB will ensure the highest contact reliability and lowest contact resistance. Do NOT solder directly to the device casing. This will cause permanent internal damage to the supercapacitor. 

CAP-XX supercapacitors are NOT SUITABLE for infrared reflow soldering, hot-air reflow soldering, or wave soldering. They should be mounted as a secondary operation, using a manual soldering iron, a hot bar soldering jig, conductive adhesive, ultrasonic welding or laser welding. 

CAP-XX recommends the use of a water-soluble flux, or a no-clean (low residue) flux, and low temperature solder compounds. 

Please solder under the following conditions: 

- Solder Type: Resin flux cored solder wire (ø1.2mm) 

- Solder: Lead-free solder: Sn-3Ag-0.5Cu 

- Soldering iron temperature at 350°C±10°C 

- Solder iron wattage: 70W or less 

- Soldering time: 3 to 4sec. 

- The same terminal should be soldered 3 or less times. 

If a hot-air gun is used to reflow the solder during a re-mount or de-mount, care must be taken to prevent excessive heating of the package adjacent to the solder terminals. Allow at least 15 sec between successive soldering attempts for the device to cool down. 

© CAP-XX Pty Limited 2024 | Tel +61 2 9420 0690 | www.cap-xx.com 

Page **7** of **8** 

Please consult CAP-XX if you wish to wash the device after soldering. 

## **Vibration and Shock Testing** 

## **Shock** 

CAP-XX has undertaken tests to determine the effects of repeated shocks on both the mechanical integrity and electrical performance of its supercapacitors: 

Charge to rated voltage at 500mA for min. 30min 

- Type: Half-Sine 

- • Amplitude: 500G • Duration: 1ms • No. of cycles: 3 in each direction (18 in total) • No. of axes: 3, orthogonal 

Results: No electrical or mechanical degradation observed. 

**==> picture [99 x 106] intentionally omitted <==**

_Note that this test was undertaken on the standard product with adhesive mounting tape (Nitto No.5000NS). To achieve the highest levels of resistance to shock, CAP-XX recommends the use of an adhesive mounting tape on the underside of the device._ 

## **Vibration** 

CAP-XX has undertaken tests to determine the effects of sustained vibration on both the mechanical integrity and electrical performance of its supercapacitors: 

Charge to rated voltage at 500mA for min. 30min 

- Type: Sinusoidal 

- • Frequency: 10 ～ 500Hz/10G • Amplitude: 1.5mm • Sweep Rate: 1octave/min • No. of cycles: 10 in each direction • No. of axes: 3, orthogonal 

Results: No electrical or mechanical degradation observed. 

_Note that this test was undertaken on the standard product with adhesive mounting tape (Nitto No.5000NS). To achieve the highest levels of resistance to shock, CAP-XX recommends the use of an adhesive mounting tape on the underside of the device._ 

## **Drop Test** 

CAP-XX has undertaken tests to determine the effects of repeated drops on both the mechanical integrity and electrical performance of its supercapacitors: 

Supercapacitor is discharged 

- Mount product to 150g box with adhesive mounting tape (Nitto No.5000NS) 

- Drop the box from 0.25m / 0.5m / 1.0m / 1.5m 

- Repeat 3 times for 6 sides (18 in total) 

Results: No electrical or mechanical degradation observed. 

© CAP-XX Pty Limited 2024 | Tel +61 2 9420 0690 | www.cap-xx.com 

Page **8** of **8** 



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