# Supercapacitor, Dual Cell, 0.38 F, 5.5 V, Solder, ± 20%
**URL**: https://novapart.co/products/HW201F/supercapacitor-dual-cell-038-f-55-v-solder-20
**SKU**: HW201F
**Manufacturer**: CAP-XX
**Category**: Passive Components || Capacitors || Supercapacitors || EDLC - Electric Double Layer Capacitors
**Price**: €6.1600
**Stock**: 10+
**Lead Time**: 50 days (indicative)
## Specifications
| Parameter | Value |
|---|---|
| Esr | 0.1ohm |
| Svhc | No SVHC (21-Jan-2025) |
| Capacitance | 0.38F |
| Voltage(Dc) | 5.5V |
| Lead Spacing | - |
| Product Range | HW201 Series |
| Product Width | 17mm |
| Qualification | - |
| Product Height | 2.7mm |
| Product Length | 28.5mm |
| 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:4706285/)
## **DATASHEET**
## **HW101 / HW201 SUPERCAPACITOR**
Revision 4.6, June 2020
## **Electrical Specifications**
The HW101 is a single cell supercapacitor. The HW201 is a dual cell supercapacitor with two HW101 cells in series, so HW201 capacitance = Capacitance of HW101/2 and HS230 ESR = 2 x HW101 ESR.
**Table 1: Absolute Maximum Ratings**
|**Parameter**|**Name**||**Conditions**|**Min**|**Typical**|**Max**|**Units**|
|---|---|---|---|---|---|---|---|
|**Terminal**
**Voltage**|Vpeak|HW101||0||2.9|V|
|||HW201||||5.8||
|**Temperature1**|Tmax|||-40||+85|°C|
**Table 2: Electrical Characteristics**
|**Parameter**|**Name**||**Conditions**|**Min**|**Typical**|**Max**|**Units**|
|---|---|---|---|---|---|---|---|
|**Terminal**
**Voltage**|Vn
~~a~~
~~as~~|HW101
~~a~~
~~as~~|~~as~~|0
~~a~~
~~as~~|~~ee~~
~~as~~|2.75
~~as~~|V
~~as~~|
|||HW201
~~a~~
~~as~~||0
~~a~~
~~as~~|~~ee~~
~~as~~|5.5
~~as~~||
|**Capacitance**|C
~~as~~
~~ae~~|HW101
~~as~~
~~ae~~|DC, 23°C
~~as~~
~~ae~~|608
~~as~~
~~ae~~|760
~~as~~
~~ae~~|912
~~as~~
~~ae~~|mF
~~as~~
~~ae~~|
|||HW201
~~ae~~||304
~~ae~~|380
~~ae~~|456
~~ae~~||
|**ESR**|ESR
~~ae~~
~~ae~~
~~a~~|HW101
~~ae~~
~~ae~~|DC, 23°C
~~ae~~
~~ae~~
~~ee~~
|~~ae~~
~~ae~~|50
~~ae~~
~~ae~~|60
~~ae~~
~~ae~~|m
~~ae~~
~~ae~~
~~ee~~|
|||HW201
~~ae~~
||~~ae~~
~~e~~
|100
~~ae~~
~~e~~~~**e**~~|120
~~ae~~
~~ee~~||
|**Leakage**
**Current**|IL
~~ee~~
~~a~~|~~ee~~
|2.75V, 23°C 120hrs
~~ee~~
~~ee~~
|~~ee~~
~~e~~
|1
~~ee~~
~~e~~~~**e**~~|2
~~ee~~
~~ee~~|µA
~~ee~~
~~ee~~|
|**RMS Current**|IRMS
~~a ~~
~~a~~|~~a e~~
~~ee~~|23°C
~~ee ~~
~~e~~
~~ee~~|~~e~~
~~e~~
~~ee~~|~~e~~~~**e** ~~
~~ee~~|3
~~ee~~
~~ee~~|A
~~ee~~
~~ee~~|
|**Peak Current2 **|IP
~~a~~|~~ee~~|23°C
~~ee~~|~~ee~~|~~ee~~|30
~~ee~~|A
~~ee~~|
2Non-repetitive current, single pulse to discharge fully charged supercapacitor.
**Table 3: Thickness**
|**HW101F**|**1.3mm**|No adhesive tape on underside
of the supercapacitor|**HW101G**|**1.4mm**|Adhesive tape on underside,
release tape removed|
|---|---|---|---|---|---|
|**HW201F**|**2.7mm**||**HW201G**|**2.8mm**||
This datasheet should be read in conjunction with the _CAP-XX Supercapacitor Product Guide_ which contains information common to our product lines.
© CAP-XX Pty Limited 2020 | Tel +61 2 9420 0690 | www.cap-xx.com
Page **1** of **8**
Revision 4.6, June 2020
**HW101 / HW201 DATASHEET**
## **Definition of Terms**
In its simplest form, the Equivalent Series Resistance (ESR) of a capacitor is the real part of the complex impedance. In the time domain, it can be found by applying a step discharge current to a charged cell as in Fig. 1. In this figure, the supercapacitor is pre-charged and then discharged with a current pulse, I =1A for duration 0.01 sec.
**Fig 1: Effective capacitance, instantaneous capacitance and ESR for an HW201**
The ESR is found by dividing the instantaneous voltage step (∆V) by I. In this example = (5.489V5.413V)/1A = 76mΩ.
The instantaneous capacitance (Ci) can be found by taking the inverse of the derivative of the voltage, and multiplying it by I.
The effective capacitance for a pulse of duration tn, Ce(tn) is found by dividing the total charge removed from the capacitor (∆Qn) by the voltage lost by the capacitor (∆Vn). For constant current Ce(tn) = I x tn/Vn. Ce increases as the pulse width increases and tends to the DC capacitance value as the pulse width becomes very long (~10 secs). After 2msecs, Fig 1 shows the voltage drop V2ms = (5.413 V – 5.383V) = 30mV. Therefore Ce(2ms) = 1A x 2ms/30mV = 67mF. After 10ms, the voltage drop = 5.413 V – 5.333V = 80mV. Therefore Ce(10ms) = 1 A x 10ms/80mV = 125mF. The DC capacitance of an HW201 = 0.38 F. Note that ∆V, or IR drop, is not included because very little charge is removed from the capacitor during this time. Ce shows the time response of the capacitor and it is useful for predicting circuit behaviour in pulsed applications.
© CAP-XX Pty Limited 2020 | Tel +61 2 9420 0690 | www.cap-xx.com
Page **2** of **8**
Revision 4.6, June 2020
**HW101 / HW201 DATASHEET**
## **Measurement of DC Capacitance**
**Fig 2: Measurement of DC Capacitance for an HW201**
Fig 2 shows the measurement of DC capacitance by drawing a constant 100mA current from a fully charged supercapacitor and measuring the time taken to discharge from 1.5V to 0.5V for a single cell, or from 3V to 1V for a dual cell supercapacitor. In this case, C = 0.1A x 7.94s /2V = 397mF, which is well within the 380mF +/- 20% tolerance for an HW201 cell.
## **Measurement of ESR**
**Fig 3: Measurement of ESR for an HW201**
Fig 3 shows DC measurement of ESR by applying a step load current to the supercapacitor and measuring the resulting voltage drop. CAP-XX waits for a delay of 50µs after the step current is applied to ensure the voltage and current have settled. In this case the ESR is measured as 90mV/1A = 90mΩ.
© CAP-XX Pty Limited 2020 | Tel +61 2 9420 0690 | www.cap-xx.com
Page **3** of **8**
Revision 4.6, June 2020
## **HW101 / HW201 DATASHEET**
## **Effective Capacitance**
**Figure 4: Effective Capacitance**
Fig 4 shows the effective capacitance for the HW101, HW201 @ 23°C. This shows that for a 1ms PW, you will measure 17% of DC capacitance or 129mF for an HW101 or 65mF for an HW201. At 10ms you will measure 34% of the DC capacitance, and at 100ms you will measure 71% 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 10ms, then you would use the Ceff(10ms) = 34% of DC capacitance = 129mF for an HW201, so Vdrop = 1A x ESR + 1A x duration/C = 1A x 100mΩ + 1A x 10ms / 129mF = 178mV. The next section on pulse response shows how the effective capacitance is sufficient for even short pulse widths.
## **Pulse Response**
Fig 5 shows that the HW201 supercapacitor does an excellent job supporting a GPRS class 10 pulse train, drawing 1.8A for 1.1ms at 25% duty cycle. The source is current limited to 0.6A and the supercapacitor provides the 1.2A difference to achieve the peak current. At first glance the freq response of Fig 8 indicates the supercapacitor would not support a 1ms pulse, but the Ceff of 65mF coupled with the low ESR supports this pulse train with only ~140mV droop in the supply rail.
**Fig 5: HW201 Pulse Response with GPRS Class 10 Pulse Train**
© CAP-XX Pty Limited 2020 | Tel +61 2 9420 0690 | www.cap-xx.com
Page **4** of **8**
Revision 4.6, June 2020
## **HW101 / HW201 DATASHEET**
## **DC Capacitance variation with temperature**
**Figure 6: Capacitance change with temperature**
Fig 6 shows that DC capacitance is approximately constant with temperature.
## **ESR variation with temperature**
**Figure 7: ESR change with temperature**
Fig 7 shows that ESR at -40°C is ~2.5 x ESR at room temp, and that ESR at 70ºC is ~0.8 x ESR at room temperature.
© CAP-XX Pty Limited 2020 | Tel +61 2 9420 0690 | www.cap-xx.com
Page **5** of **8**
Revision 4.6, June 2020
## **HW101 / HW201 DATASHEET**
## **Frequency Response**
**Fig 8: Frequency Response of Impedance (biased at 5.5V with a 50mV test signal)**
**Fig 9: Frequency Response of ESR, Capacitance & Inductance**
Fig 8 shows the supercapacitor behaves as an ideal capacitor until approx 3 Hz when the magnitude no longer rolls off proportionally to 1/freq and the phase crosses -45°. Performance of supercapacitors with frequency is complex and the best predictor of performance is Fig 4 showing effective capacitance as a function of pulsewidth.
© CAP-XX Pty Limited 2020 | Tel +61 2 9420 0690 | www.cap-xx.com
Page **6** of **8**
Revision 4.6, June 2020
## **HW101 / HW201 DATASHEET**
## **Leakage Current**
**Fig 10: Leakage Current**
Fig 10 shows the leakage current for HW101 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 1.5µA at room temperature. At 70°C leakage current will be ~10µA.
## **Charge Current**
**Fig 11: Charging an HW101 with low current**
The corollary to the slow decay in leakage currents shown in Fig 10 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, it should take 0.76F x 2.4V / 0.00002A = 25hrs to charge a 0.76 F supercapacitor to 2.4V at 20µA, but Fig 11 shows it took 56hrs. At 100µA charging occurs at a rate close to the theoretical rate.
© CAP-XX Pty Limited 2020 | Tel +61 2 9420 0690 | www.cap-xx.com
Page **7** of **8**
Revision 4.6, June 2020
## **HW101 / HW201 DATASHEET**
## RMS Current
**Fig 12: Temperature rise in HW201 with RMS current**
Continuous current flow into/out of the supercapacitor will cause self-heating, which limits the maximum continuous current the supercapacitor can handle. This is measured by a current square wave with 50% duty cycle, charging the supercapacitor to rated voltage at a constant current, then discharging the supercapacitor to half rated voltage at the same constant current value. For a square wave with 50% duty cycle, the RMS current is the same as the current amplitude. Fig 12 shows the increase in temperature as a function of RMS current. From this, the maximum RMS current in an application can be calculated, for example, if the ambient temperature is 40C, and the maximum desired temperature for the supercapacitor is 70C, then the maximum RMS current should be limited to 2.5A, which causes a 30C temperature increase.
## **CAP-XX Supercapacitors Product Guide**
Refer to the package drawings in the CAP-XX Supercapacitors Product Guide for detailed information of the product’s dimensions, PCB landing placements, active areas and electrical connections, as well for information on endurance and shelf life, transportation and storage, assembly and soldering, safety and RoHS/REACH certification.
© CAP-XX Pty Limited 2020 | Tel +61 2 9420 0690 | www.cap-xx.com
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## Links
- [View this product on Novapart](https://novapart.co/products/HW201F/supercapacitor-dual-cell-038-f-55-v-solder-20)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/cap-xx/hw201f/supercapacitor-0-38f-5-5v-smd/dp/4706285)
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