F931E106KBA AVX Capacitor Polarised (Capacitor Moulded Polarised) In Stock
The F931E106KBA is an AVX solid tantalum SMD capacitor with 10 µF capacitance, 25 V voltage rating, ±10% tolerance, and 1900 mΩ ESR measured at 100 kHz. It is housed in a molded polarized SMD case suitable for automated surface-mount assembly on high-reliability PCBs. Available in stock worldwide with competitive pricing and fast shipping.
- Manufacturer
- AVX
- Package
- Capacitor Moulded Polarised
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- F931E106KBA Datasheet PDF
- Category
- Capacitor Polarised
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 10 µF / 25 V solid tantalum design offers stable capacitance over temperature without the voltage derating issues typical of ceramic MLCCs at high fields
- 1900 mΩ ESR at 100 kHz provides inherent current-limiting behavior that reduces failure risk in solid tantalum capacitors under overvoltage transients
- Ultra-low leakage current of 0.0025 mA minimizes quiescent power loss in battery-backed power rail filtering and DRAM decoupling applications
- Molded polarized SMD package enables automated pick-and-place assembly while providing polarity marking to prevent reverse-voltage installation errors
Applications
The F931E106KBA is commonly used in power supply output filtering, DRAM and processor core decoupling, and RF front-end power rail bypass applications where 10 µF of stable capacitance at 25 V is required in a compact SMD footprint. Solid tantalum technology makes it a reliable alternative to electrolytic capacitors in space-constrained designs such as mobile computing daughtercards and telecommunications line cards. Its low leakage of 0.0025 mA is advantageous in always-on standby power circuits and battery-powered industrial sensors.
Specifications
| Reach Compliance Code | Compliant |
| Factory Lead Time | 13Weeks |
| YTEOL | 10 |
| Additional Feature | ESR AND RIPPLE CURRENT IS MEASURED AT 100KHZ |
| Capacitance | 10 µF |
| Capacitor Type | TANTALUM CAPACITOR |
| Dielectric Material | TANTALUM (DRY/SOLID) |
| ESR | 1900mΩ |
| Height | 1.9mm |
| Leakage Current | 0.0025mA |
| Mounting Feature | SURFACE MOUNT |
| Negative Tolerance | 10% |
| Package Shape | RECTANGULAR PACKAGE |
| Package Style | SMT |
| Packing Method | TR, 7 INCH |
| Polarity | POLARIZED |
| Positive Tolerance | 10% |
| Rated (DC) Voltage (URdc) | 25V |
| Ripple Current | 85mA |
| Size Code | 1210 |
| Surface Mount | YES |
| Tan Delta | 0.12 |
| Terminal Shape | J BEND |
| Package | Capacitor Moulded Polarised |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8532.21.00.50 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the ESR of the F931E106KBA at 100 kHz, and how does it affect power supply ripple filtering?
The F931E106KBA has an ESR of 1900 mΩ (1.9 Ω) measured at 100 kHz. In a switching power supply with 100 mA ripple current at 100 kHz, this ESR contributes 190 mV of ripple voltage in addition to the reactive voltage drop. For low-ripple applications, designers typically parallel multiple F931E106KBA units or use a lower-ESR ceramic capacitor in parallel to reduce the effective ESR below 100 mΩ.
How does the 25 V voltage rating of the F931E106KBA translate to practical derating rules for solid tantalum capacitors?
Industry best practice for solid tantalum capacitors specifies a voltage derating of 50% to 60% of the rated voltage to prevent ignition failures under surge conditions. For the F931E106KBA with a 25 V rating, this means using the capacitor on rails no higher than 12.5 V to 15 V in production designs. At these derated levels, the 10 µF capacitance remains stable and the failure-in-time (FIT) rate is significantly reduced compared to operating at the full 25 V rating.
For a 3.3 V processor core decoupling application, what advantages does the F931E106KBA offer over a 10 µF X5R MLCC?
The F931E106KBA maintains its full 10 µF capacitance at 3.3 V applied bias, whereas a 10 µF X5R 0805 MLCC can lose 50–70% of its capacitance under a 3.3 V DC bias due to dielectric saturation, effectively delivering only 3–5 µF. The solid tantalum construction of the F931E106KBA provides voltage-stable capacitance, making it a more predictable choice for processor core decoupling where the actual capacitance under bias must be accurately budgeted.
What leakage current specification does the F931E106KBA have, and what does this mean for battery-powered standby circuits?
The F931E106KBA has a leakage current of 0.0025 mA (2.5 µA) at rated voltage. In a battery-powered device with a 1000 mAh cell that targets 1 year of standby life, the total budget for all leakage sources is approximately 114 µA. At 2.5 µA, the F931E106KBA contributes only 2.2% of this budget per capacitor, making it an efficient choice for standby power rails where multiple decoupling capacitors are used simultaneously.
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