TPSA685K020R1000 AVX Capacitor Polarised (Capacitor Moulded Polarised) In Stock
AVX TPSA685K020R1000 is a 6.8 µF 20 V solid tantalum electrolytic capacitor in the TPS series with ±10% tolerance and 1000 mΩ ESR, offering stable low-profile decoupling for portable electronics and power management circuits.
- Manufacturer
- AVX
- Package
- Capacitor Moulded Polarised
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- TPSA685K020R1000 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
- 6.8 µF capacitance at 20 V rating for power rail decoupling in portable systems
- Solid tantalum dielectric for stable capacitance over temperature and lifetime
- 1000 mΩ ESR at 100 kHz for effective ripple current suppression
- ±10% capacitance tolerance (K grade) for predictable filter circuit behavior
- Low-profile 1.6 mm height TPS-A case for space-constrained SMT assemblies
Applications
The TPSA685K020R1000 is suited for bulk decoupling and energy storage on 5 V to 20 V power rails in portable consumer electronics, DSP boards, and DC-DC converter output filters where solid tantalum capacitors offer high volumetric efficiency. Its 6.8 µF capacitance and 1000 mΩ ESR at 100 kHz are ideal for suppressing switching noise on processor power rails and RF module supply lines. The TPS-A case's low 1.6 mm profile makes it appropriate for slim handheld devices, wearables, and thin industrial control panels where vertical clearance is limited.
Specifications
| Pbfree Code | Yes |
| Reach Compliance Code | Compliant |
| Factory Lead Time | 13Weeks |
| YTEOL | 10 |
| Additional Feature | ESR AND RIPPLE CURRENT IS MEASURED AT 100KHZ |
| Capacitance | 6.8 µF |
| Capacitor Type | TANTALUM CAPACITOR |
| Dielectric Material | TANTALUM (DRY/SOLID) |
| ESR | 1000mΩ |
| Height | 1.6mm |
| JESD-609 Code | e3 |
| Leakage Current | 0.0014mA |
| Mounting Feature | SURFACE MOUNT |
| Negative Tolerance | 10% |
| Package Shape | RECTANGULAR PACKAGE |
| Package Style | SMT |
| Packing Method | TR, PLASTIC, 7 INCH |
| Polarity | POLARIZED |
| Positive Tolerance | 10% |
| Rated (DC) Voltage (URdc) | 20V |
| Ripple Current | 110mA |
| Size Code | 1206 |
| Surface Mount | YES |
| Tan Delta | 0.06 |
| Terminal Finish | Matte Tin (Sn) - with Nickel (Ni) barrier |
| 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 |
| Country of Origin | Czechia, El Salvador |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What ESR does the TPSA685K020R1000 exhibit at 100 kHz and how does this affect switching converter output filtering?
The TPSA685K020R1000 has an ESR of 1000 mΩ measured at 100 kHz, which is moderately high for a tantalum capacitor of this size. In switching converter output filters, a 1000 mΩ ESR limits ripple current handling to moderate levels and may require paralleling with a low-ESR ceramic capacitor of 1 µF to 10 µF to achieve optimal noise suppression on a 5 V to 20 V output rail.
Why choose the TPS-A series solid tantalum over an aluminum electrolytic capacitor for a compact 12 V power supply design?
Solid tantalum capacitors like the TPSA685K020R1000 offer a significantly smaller footprint and height (1.6 mm) compared to equivalent aluminum electrolytics at 6.8 µF 20 V, while providing better capacitance stability over the -55°C to +125°C operating temperature range. This makes the TPS-A series preferred for compact 12 V power supply boards in embedded systems, where physical space is at a premium and long operational life is required.
How should the 20 V rating of the TPSA685K020R1000 be derated in a real power supply circuit?
Solid tantalum capacitors are typically derated to 50% of their rated voltage in circuit applications to prevent field-forming failure modes. For the TPSA685K020R1000 with a 20 V rating, the recommended maximum operating voltage is 10 V DC, making it suitable for decoupling 5 V, 7.5 V, or 9 V supply rails where a 6.8 µF capacitance value is required. Exceeding 10 V operating voltage significantly reduces the capacitor's reliability and service life.
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