Overview
The BAT54CWT1G is a Schottky barrier diode manufactured by ON Semiconductor, widely used in high-frequency and low-power applications. It is part of the BAT54 series, known for its compact SOT-323 package and dual-diode configuration. The device is optimized for fast switching and low forward voltage, making it suitable for portable electronics like smartphones and tablets. Schottky diodes like the BAT54CWT1G are preferred over standard PN-junction diodes in applications requiring minimal power loss and rapid response times. Its dual-diode design allows for flexible circuit integration, such as in OR-ing or polarity protection circuits.
Structure and Working Principle
The BAT54CWT1G consists of two Schottky diodes connected in a common-cathode configuration. Each diode is formed by a metal-semiconductor junction (typically platinum-silicon), which reduces the forward voltage drop to approximately 0.32V at 1mA. This structure enables faster switching by minimizing charge storage effects. When forward-biased, the Schottky junction allows majority carriers (electrons) to flow with minimal resistance, unlike PN-junction diodes that rely on slower minority carrier diffusion. Reverse leakage is slightly higher than PN diodes but remains within acceptable limits for most applications.
Key Features
The BAT54CWT1G offers a forward current rating of 200mA per diode and a reverse voltage withstand capability of 30V. Its ultra-low forward voltage (max 0.5V at 100mA) enhances energy efficiency in power-sensitive designs. The SOT-323 package measures just 2.1 × 1.25mm, saving PCB space in compact devices. Additional features include a typical reverse recovery time of <5ns, making it suitable for high-frequency rectification up to several MHz. The dual-diode configuration simplifies circuit layouts by reducing component count in voltage clamping or logic isolation circuits.
Application Areas
Primary applications include power supply OR-ing in battery-operated devices, where the diode prevents reverse current flow. It is also used in signal clamping circuits to protect sensitive ICs from voltage spikes. RF detectors and mixers benefit from its fast switching and low noise characteristics. In portable electronics, the BAT54CWT1G is commonly found in USB power management, DC-DC converters, and audio/video signal routing. Industrial uses include sensor interfaces and low-voltage rectification in automation systems.
Maintenance and Precautions
To ensure longevity, avoid exceeding the maximum reverse voltage (30V) or forward current (200mA per diode). Excessive heat can degrade performance; maintain junction temperatures below 125°C. For high-current applications, consider thermal vias or copper pours on the PCB to dissipate heat. ESD precautions are critical during handling, as the Schottky junction is sensitive to static discharge. Storage should be in anti-static bags with humidity controlled below 60% RH to prevent oxidation of contacts.
B2B Procurement Guide
When sourcing the BAT54CWT1G, verify manufacturer certifications (e.g., ON Semiconductor’s AEC-Q101 for automotive-grade variants). Bulk purchases (reels of 3,000 units) typically reduce per-unit costs by 20–30%. Lead times vary; ensure suppliers provide traceability documentation for authenticity. Alternate part numbers include BAT54S (SOT-23 package) or BAT54C (common-cathode SOT-23). For high-reliability applications, request extended temperature range (-55°C to +150°C) variants. Always check for counterfeit components by cross-referencing datasheet specifications with sample testing.
Related Manufacturers
- 主营：国巨电容、国巨电阻、三星电容、华新科、伍尔特电感、二极管、三极管、贴片电感、lm317to-220、贴片排阻、贴片电阻、贴片电容、贴片磁珠、贴片滤波器、s8050s0t23、旺诠电阻、厚声电阻
- 主营：TI、ST、ADI、XILINX赛灵思、ALTERA、阿尔特拉、镁光
- 主营：opa2137ua、tda7418tr、批量有、bav99wt1g、bat54lt1g、bat54ht1g、pzta92t1g、bas20ht1g、bcx5616ta、传感器、uc2842bng、l78l08acz、bas21ht1g、74vhc08mx、fmmt560ta、fmmt449ta、irf有96k、fpf2700mx、ixdn609si、连接器、bcx5410ta、d有50000、opa2347ua、bas16ht1g、analogpow
- 主营：ST、TI、ADI、ATMEL、XILINX、罗姆、IR、NS、MAXIM、PHI、ON、士兰微、长电、TE
- 主营：MM1192XFBE、MM1192XD、EG4X20BG256、DS80PCI402SQE、LT6654AIS6-5#TRMPBF
- 主营：芯片、HT、ST、TI
- 主营：电子IC芯片、电容 电阻器、自动元器件、被动元器件、ST、ADI、ON、GD、英飞凌、微芯、东芝等等元器件
- 主营：单片机、hx5004nlt、钽电容、保险丝、比较器、二极管、lt6911uxc、触发器、检测器、监视器、iw1691-03、变压器、35ce220ax、解码器、营模块、lt2911r-d、隔离器、连接器、封装qfn、ths2522kj、三极管、锁存器、snj54f04j、hsms-282c、ad8345arez
- 主营：Wi-Fi芯片、运放芯片、单片机芯片、以太网芯片、音频视频芯片、USB转换芯片、逻辑芯片
- 主营：bh6b-xh-2、单片机、开关器、744777115、ctsr0.6-p、三极管、二极管、tb616cf44、2309409-2、bzt52c16q、控制器、lh311007b、解码器、lh32k048f、隔离器、30f-51bnl、连接器、sg01s-c18、接线座、传感器、30f-81anl、rt3ex020e、驱动器、mx44006nf1、guvc-s10gd
- 主营：tl081bcdr、aoz1051pi、74hc4051d、lm324dr2g、hm2103nlt、rt8075zqw、ufqfpn-28、74hc244pw、picostar6、封装bga、30kp120ca、tl431aqpk、dip-eul10、aoz1284pi、ne5534adr、封装dfn、fan7385mx、pt5139-ht、ppakso-8l、pc16550dv、收发器、pbss5320t、sfr16s20t、aod5b65m1、解码器
- 主营：ad574ajnz、74hc4051d、欧姆龙、jq1-12v-f、opa3690id、tq2-l2-5v、cbb电容、100nf104k、扁平线、无锁自、丝印l8r、3266x-101、pcm1742ke、sn74hc00d、tlc27l1id、sn75176bp、射频座、led灯珠、nce01p03s、tq2-l-12v、贴片sop、蜂鸣器、存储器、csd87381p、cd40161be
- 主营：集成电路 IC、GB202-300、内存、服务器、人工智能芯片
- 主营：储存器、集成电路ic、单片机、TI代理
- 主营：s1mb-13-f、gh-1a-24l、74hc4051d、lm324dr2g、se-600-12、ee-sx1042、ndr-75-24、iaq-corec、音频dsp、a3255-q48、bas21ht1g、fga25n120、tp1941-tr、fmmt451ta、赛芯微、2290490-1、smsja1000、js1-12v-f、无线电、ht67f5652、hy911130a、me4054m5g、ls976-n53、lr-tb2000、TI/德州仪器