A CA45L low ESR (Equivalent Series Resistance) SMD tantalum capacitor produced by BEC is a compact electronic component which can provide stable energy storage with possible minimal internal resistance. Compared with general purpose SMD tantalum capacitors, this series of products have significantly lower ESR, making it ideal for high-frequency filtering, decoupling, and power delivery in space-constrained, high-performance circuits. They have better efficiency but less heat than traditional tantalum capacitors. CA45L low ESR SMD tantalum capacitors are good choices in automotive, aerospace, medical industries. Also commonly found in DC/DC converters used for stable energy for voltage regulation.
Basic Parameters
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Product Category |
CA45L low ESR SMD tantalum capacitor |
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Capacitance Range |
0.47UF~1000UF |
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Voltage Range |
4V~50V |
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Working Temperature |
-55℃~125℃ |
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Tolerance |
±5%, ±10%, ±20% |
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Certificate |
RoHS, REACH |
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Applications |
Automotive industry, portable electronics, medical devices, telecommunications, aerospace industry |
Characteristics
Low Equivalent Series Resistance (ESR)
ESR Range: normally milli Ohm(mΩ) level (1–100mΩ at 120/100 KHz, 25°C), far lower than standard tantalum capacitors (which are often hundreds of mΩ) and comparable to low ESR ceramic capacitors, but with higher capacitance density.
High Capacitance Density
Far higher capacitance per unit volume than MLCC and electrolytic capacitors in the same SMD footprint for example 0805 size an SMD tantalum capacitor can offer up to 100µF, while MLCC of the same size reaches maximum 10µF).
High Reliability
Longer lifespan (10,000 or more hours at rated voltage and temperature, up to 100,000 hours with derated voltage); lower failure rate (FIT rate<100 at 25°C, per MIL-HDBK-217 grade).
Resistant to moisture (IPC/JEDEC moisture sensitivity level, MSL 3 or 1) –suitable for reflow soldering without pre-heating (for MSL 1) or with minimal pre-heating (MSL 3).
Production Process
Parts of Our Production Facilities
FAQ
Q1: Why has ESR value of my capacitor increased after soldering?
A1: Excessive thermal stress (wave soldering, longer reflow peak temperature that what it should be, or multiple reflow passes) will caused dielectric cracking or termination damage. Only use reflow soldering and follow the manufacturer's thermal profile.
Q2: What's the most possible cause for my low ESR tantalum capacitor that failed short circuit?
A2: A likely 90% or more of short-circuit failures are due to lack of voltage derating (operating at/above the rated voltages) or voltage transients (spikes in the power rail). Check your circuit's peak voltage and implement 30–50% voltage derating for the capacitor.
Q3: What are the primary applications for low ESR SMD tantalum capacitors?
A3: Power supply/DC-DC converter filtering/decoupling (smartphones, laptops, industrial power supplies).
Battery-powered devices (wearables, IoT sensors, portable medical devices)
Automotive electronics (ADAS, infotainment, powertrain)
Industrial automation (PLCs, motor drives, sensor modules)
Telecom equipment like routers and modems.
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