Polymer Tantalum Capacitors
New Requirements for Capacitors Due to the Miniaturization and High-Frequency Trends in Terminals
As downstream products such as M.2 SSDs, AI servers, and 5G communication equipment continue to evolve towards miniaturization and high performance, more stringent constraints are being placed on the size and electrical performance of the capacitors used. For example, the single-sided board height of M.2 SSDs is generally limited to within 1.5mm; while 5G RRU high-frequency switching power supplies require effective suppression of ripple noise in frequency bands above 10MHz.
At the same time, terminal applications are placing higher standards on the height, high-frequency impedance characteristics, and long-term reliability of the tantalum capacitors used internally. However, the industry generally faces practical problems such as long lead times, high costs, and unstable supply chains for imported tantalum capacitors, urgently requiring a domestically produced alternative that balances high performance, low cost, and supply chain security.
01 Three Major Constraints: Space, High Frequency, and Supply
Space Constraints: The compact internal layout of ultra-thin devices means that most tantalum capacitor solutions are ≥2mm in height, making them unsuitable. This forces PCB designs to use multiple small-capacity capacitors in parallel, increasing design complexity and occupying PCB area.
Insufficient High-Frequency Performance: Traditional leaded tantalum capacitors have high ESL (Effective Susceptibility), resulting in poor filtering performance above 10MHz. This can easily lead to voltage spikes, causing chip malfunctions, equipment downtime, and increased product return rates.
Supply Chain Risk: Imported thin tantalum capacitors of the same specifications have a lead time of 8-12 weeks, with procurement costs approximately 30% higher. The risk of supply disruption directly impacts project delivery.
02 YMIN Technology Solutions:
YMIN offers two series of conductive polymer tantalum capacitors, TQD15 and TQW19, employing a bottom-terminal structure and ultra-thin packaging technology. These capacitors are suitable for highly sensitive and reliable applications and can directly replace corresponding thin-type imported tantalum capacitors such as Panasonic TQC/TQS series, KEMET T521 series, and AVX TCJ series.
【YMIN Tantalum Capacitor Core Parameters and Customer Value】
Figure 1. TQD15 35V 47µF 7.3*4.3*1.5
TQD15 Series (Typical Model: TQD470M1VD15120RN):
Specifications: 35V 47µF
Dimensions: 7.3×4.3×1.5mm. At the same voltage and capacitance, some models in the Panasonic TQS series have a height of 1.9mm (a 1.4mm version is also available). The TQD15 achieves the same specifications with a thickness of 1.5mm, making it competitive.
ESR: 120mΩ@100kHz (typical value)
Ripple Current: 1200mA@45℃
Operating Temperature Range: -55~105℃, 2000-hour lifespan guarantee at 105℃. In a 24/7 server operating environment, the capacitor lifespan margin is sufficient, reducing after-sales repair rates.
This series can meet the strict height limit requirements of single-sided M.2 SSD layout, and can be directly adapted without board modification. The low ESR characteristics can reduce power supply temperature rise and improve the long-term operational reliability of the device.
Figure 2. TQW19 35V 100μF 7.3×6.0×1.9mm
TQW19 Series (Typical Model: TQW101M1VW19120RN):
Specifications: 35V 100µF. Provides 100µF capacity support in scenarios with a 2mm height limit.
Dimensions: 7.3×6.0×1.9mm (wide-body design)
ESR: 120mΩ@100kHz (typical value)
Ripple Current: 1800mA@45℃, the wide-body design provides excellent heat dissipation. Under the instantaneous high current surge of AI server GPUs, the capacitors are less prone to overheating and failure, reducing overall maintenance costs.
The TQW19 series can provide high capacity support in scenarios with a 2mm height limit, meeting the high capacitance requirements of SSD PLP power-loss protection, AI server power filtering, and other scenarios. Its high ripple capability can withstand high current load surges.
| YMIN Conductive Polymer Tantalum Capacitor Core Advantages
**Utilizing a bottom-mounted terminal structure, ESL is reduced by 50% compared to ordinary tantalum capacitors.** Excellent high-frequency filtering performance effectively suppresses power ripple and voltage spikes in frequencies above 10MHz.
**Using ≥99.995% high-purity domestic tantalum powder and a PEDOT:PSS conductive polymer cathode, resulting in excellent leakage current characteristics and an open-circuit failure mode, offering higher safety.** Even if the capacitor fails, it will not short-circuit and burn out the entire board; after-sales repair only requires replacing a single capacitor, not the entire board.
**Universally sourced raw materials, ensuring a secure and controllable supply chain.** Stable delivery time (standard delivery time 6-8 weeks, rush orders can be reduced to 4 weeks). Project scheduling does not require months of advance inventory locking, reducing capital tied up and inventory management costs.
03 Typical Application Verification
M.2 SSD PLP Power Loss Protection Scenario: Replaces Panasonic TQC/TQS series, improving power loss retention time by 15%, reducing ESR by 40% compared to some imported competitors, reducing temperature rise by 10℃, and passing 2000 abnormal power loss tests.
Ultra-thin laptop CPU filtering scenario: Replacing two parallel 16V/100µF capacitors, the height of a single 35V/47µF capacitor is reduced by 0.4mm, and ripple noise is reduced from 35mVpp to 22mVpp.
5G RRU power supply decoupling scenario: Capacitance retention reaches 85% at -55℃, passing 500 hours of dual 85 testing, meeting industrial-grade high and low temperature operation requirements.
04 Scenario Q&A
Q1: M.2 SSD single-sided board height is limited to ≤1.5mm. Are there 35V, 47µF tantalum capacitors that can meet this requirement?
A1: YMIN TQD15 series conductive polymer tantalum capacitors, typical model TQD470M1VD15120RN, are 47µF/35V, only 1.5mm high, with an ESR of 120mΩ@100kHz, fully adapting to the height limit requirements of M.2 SSD single-sided board layouts.
Q2: My design currently uses Panasonic TQC/TQS series tantalum capacitors. Do you have any pin-to-pin alternatives, and how do they perform?
A2: YMIN TQD15/TQW19 series can be used as pin-to-pin replacements for Panasonic TQC/TQS, KEMET T521, AVX TCJ, and other series capacitors. The TQD15 is 21% thinner than comparable Panasonic products, costs 25%-30% less, and has a lead time of 6-8 weeks (4 weeks for rush orders). It also improves power-off hold-up time by 15%.
Q3: High-frequency switching power supplies have significant ripple in the 10MHz band, which ordinary tantalum capacitors cannot suppress. What suitable tantalum capacitors would you recommend?
A3: YMIN’s TQD15/TQW19 series adopts a bottom-mounted terminal structure, reducing ESL by 50% compared to traditional tantalum capacitors. Combined with a low ESR characteristic of 120mΩ, it offers excellent high-frequency filtering performance, effectively suppressing power supply ripple and voltage spikes in the 10MHz band, making it suitable for high-frequency decoupling scenarios such as 5G RRUs and industrial robot control boards.
Q4: I need a PLP capacitor with a height limit of 1.9mm. What is the maximum capacitance you can achieve? I need a 100µF/35V specification.
A4: YMIN’s TQW19 series conductive polymer tantalum capacitor, typical model TQW101M1VW19120RN, has a specification of 100µF/35V, a height of only 1.9mm, and a ripple current of up to 1800mA@45℃, fully meeting the requirements for large-capacity PLP capacitors with a height limit of 2mm.
Summary
Ymin’s TQD15/TQW19 series conductive polymer tantalum capacitors achieve a triple balance of performance, cost, and supply chain security through ultra-thin packaging, low ESL structural design, and a domestically produced material system. They are suitable for highly sensitive and reliable applications such as M.2 SSDs, AI servers, 5G base stations, and ultra-thin laptops, and can directly replace imported series such as Panasonic TQC/TQS and KEMET T521. For datasheets, test reports, or sample requests, please contact the ymin technical support team (ymin website: www.ymin.com).
【Abstract】
“Applicable Scenarios”: “M.2 SSD PLP power-loss protection, AI server power filtering, 5G base station RRU decoupling, ultra-thin laptop power supplies, industrial robot control boards, automotive T-BOX, smart cockpit power filtering”,
“Core Advantages”: “1.5mm/1.9mm ultra-thin design, 50% lower ESL than traditional designs, 120mΩ low ESR, high ripple current capability, can replace imported pin-to-pin series, 25%-30% lower cost, 6-8 weeks lead time (4 weeks for rush orders), fully domestic supply chain”,
“Recommended Models”: “TQD470M1VD15120RN (47µF/35V/1.5mm), TQW101M1VW19120RN (100µF/35V/1.9mm)”,
“Action Guide”: “Request specifications, provide test reports, request samples, contact us”
Post time: Jun-30-2026