Product Overview and Selection Scope
NB5R5V155N-E is a 5.5 V rated, 1.5 F V-type coin supercapacitor with both polarized terminals extending in the same radial direction. It is intended for backup, low-power state retention and controlled data-save intervals.
This device is polarized and its terminal voltage falls during discharge. Verify the ESR step, capacitance tolerance, load profile, leakage, charging current and minimum system voltage in the complete circuit.
Part-Number Construction
The designation is decoded below using the naming table in the supplied specification.
| Segment | Meaning | Value for this product | Engineering note |
|---|---|---|---|
| NB | Series | Coin-type supercapacitor | Identifies the coin-cell product family. |
| 5R5 | Series voltage code | 5.5 V rated | The PDF's separate 5.0 V surge entry is internally inconsistent and requires confirmation. |
| V | Terminal format | V-type polarized tabs | Confirm the same-direction terminal geometry, spacing and polarity before PCB release. |
| 155 | Capacitance code | 1.5 F | Nominal capacitance before tolerance and ageing margins. |
| N | Tolerance code | Product specification: −20% to +80% | Use 1.2 F as the initial minimum for conservative calculations. |
| E | Variant code | Standard product variant | Confirm the exact ordering code on the controlled specification. |
Electrical Characteristics
Values below are transcribed from the supplied NYFEA specification. Rated operating voltage and surge voltage are separate limits.
| Parameter | Condition | Specified value | Unit |
|---|---|---|---|
| Rated operating voltage | UR | 5.5 | V |
| Surge voltage | Source-listed value; confirmation required | 5.0 | V |
| Nominal capacitance | C | 1.5 | F |
| General capacitance tolerance | IEC 62391-1 | −20 to +80 | % |
| Controlled capacitance tolerance | Controlled option | −10 to +20 | % |
| Category temperature range | Ambient | −25 to +70 | °C |
| Maximum ESR | 1 kHz, 10 mA, room temperature | 10 | Ω |
| Leakage current | After 24 h at rated voltage | 10 | µA |
The supplied PDF states 5.5 V rated voltage and 5.0 V surge voltage. Because a surge limit would normally not be lower than the continuous rating, obtain written confirmation from NYFEA before schematic sign-off or production release.
Mechanical Dimensions and Polarity
The component uses a polarized V-type coin construction. Both terminals extend in the same radial direction while connecting to opposite electrical poles. Confirm lead spacing, polarity and the full terminal envelope before assembly.
| Dimension | Nominal | Tolerance | Design use |
|---|---|---|---|
| Body diameter | 19.5 mm | ±0.5 mm | Main cylindrical envelope |
| Body thickness | 4.5 mm | ±0.5 mm | Axial package depth |
| Overall height | 23.0 mm | ±0.5 mm | Body-and-terminal envelope |
| Lead pitch | 5.0 mm | ±0.5 mm | Centre-to-centre PCB spacing |
| Tab thickness | 0.2 mm | ±0.05 mm | Terminal cross-section |
| Lead width | 1.0 mm | ±0.1 mm | Use the controlled drawing for PCB-hole geometry |
Reliability and Endurance
| Test | Source condition | Capacitance requirement | ESR requirement |
|---|---|---|---|
| Load life | 5.5 V at +70 ±2 °C for 1000 h | Within ±20% of initial | ≤3 × initial |
| Temperature cycling | Five cycles: −25 °C → room temperature → +70 °C → room temperature | Within ±20% of initial | Within initial specified limit |
| Storage life | +70 ±2 °C for 1000 h | Within ±20% of initial | ≤3 × initial |
| Cycle life | 500,000 constant-current cycles between specified and half-specified voltage at +25 °C | Within ±30% of initial | ≤3 × initial |
Capacitance and ESR Test Methods
For capacitance measurement, charge the device to rated voltage for 30 minutes and discharge it at the prescribed constant current. ESR is measured using the specified 1 kHz AC method.
Hold-Up, Leakage and Energy Calculations
Estimate the usable interval from the allowable voltage window and load current, then subtract the immediate ESR voltage step. For leakage-current testing, fully discharge the device for 1–24 hours, apply rated voltage for 72 hours, and then measure the current.
PCB Mounting, Soldering and Handling
Assembly and environmental conditions directly affect reliability. Apply the following source-specification precautions during layout and process qualification.
If devices are connected in series, implement voltage balancing and obtain NYFEA application guidance. Also validate hole size, lead pitch, cleaning chemistry, polarity inspection and mechanical support before release.
Application Guidance and Design Limitations
The applications below are engineering use cases consistent with a compact 5.5 V rated, 1.5 F backup component. They are not end-product certification claims.
RTC BackupMaintain timekeeping through a brief loss of the main supply.
Memory RetentionSupport low-power state preservation and orderly data save.
Smart Meter Data SaveProvide a short window for nonvolatile recording after mains loss.
Compact Control NodesBridge short interruptions after validating the source-listed current limit.
Wireless Sensor BackupMaintain low-power state between supply events after circuit validation.The source specification does not claim automotive, medical, functional-safety, life-support or fault-tolerant qualification. Confirm all mandatory standards for the end product.
NB5R5V155N-E Engineering FAQs
What are the rated voltage and nominal capacitance?
The rated operating voltage is 5.5 V and the nominal capacitance is 1.5 F. The source PDF separately lists a 5.0 V surge value that requires confirmation.
What capacitance tolerance is specified?
The supplied specification states −20% to +80%, corresponding to an initial range of 1.2 F to 2.7 F before additional temperature and ageing allowances.
What is the maximum ESR?
The maximum ESR is 10 Ω at 1 kHz and 10 mA at room temperature.
What is the operating temperature range?
The specified operating range is −25 °C to +70 °C.
What are the package dimensions and terminal arrangement?
The source drawing specifies an Ø19.5 ±0.5 mm body with 4.5 ±0.5 mm thickness and 5.0 ±0.5 mm lead pitch. The V-type terminals extend in the same radial direction; use the controlled drawing for the complete footprint.
Is the component polarized?
Yes. Match the negative marking to the PCB polarity before soldering.
Can it be used as a direct battery replacement?
No. A supercapacitor has continuous voltage decay and an ESR-related voltage step. Validate the load current, minimum system voltage, usable energy and required hold-up time.
Why does this page flag the surge-voltage value?
The supplied PDF states 5.5 V rated voltage but 5.0 V surge voltage. This is internally inconsistent, so the value must be confirmed with NYFEA before design release.
Which document controls production decisions?
The supplied NB5R5V155N-E PDF and the current NYFEA-controlled revision remain the design authority.
This page summarizes the supplied NB5R5V155N-E product specification for component evaluation. Confirm the current revision, dimensions, polarity, the source-document voltage discrepancy, test conditions, assembly process and qualification requirements before production release.
