ADI

2000

MAX5550ETE+ is a dual-channel, 10-bit, programmable, high-output current digital-to-analog converter (DAC) developed by ADI (Maxim). It features a 16-pin TQFN (3mm × 3mm) micro surface-mount package. This device is specifically designed for applications requiring high current drive, such as PIN diode biasing, RF attenuator control, and VCO tuning. Each DAC channel can provide an output current of up to 30mA. When the two outputs are connected in parallel, the current can reach 60mA. Its output is a buffered current type, with a typical setup time of 30µs. It supports single power supply ranging from 2.7V to 5.25V, and can choose either an internal (1.25V bandgap reference) or external reference source. This device adopts a selectable I²C/SPI serial interface with pins, facilitating connection with microcontrollers.

Nanya Technology Corporation

8200

The NT5CC256M16DP-DIH is a 4Gb (512MB) DDR3L SDRAM introduced by Nan Ya Technology. It is a low-voltage, high-speed dynamic random access memory with a 96-ball VFBGA package. The internal organization of this device is 256M x 16 bits, and the data bus width is 16 bits. Its core function is to provide high-speed data cache and operational memory for embedded systems, industrial and automotive electronic equipment. This chip supports the DDR3L-1600 specification, with a maximum clock frequency of up to 800MHz and a data transfer rate of 1600Mbps. The operating voltage is 1.35V, and it is compatible with the standard 1.5V DDR3 interface. The operating temperature range covers -40°C to +105°C, making it an industrial-grade/car-grade product.

Littelfuse

15000

This part is a through-hole surface-mount fuse from the Littelfuse TR5® 372 series, which is a type of delayed (slow-break) fuse. It is used for overcurrent protection in electronic devices. It will melt when abnormal current occurs in the circuit, thereby protecting the downstream components. The core parameters are as follows: rated current 100mA, rated voltage 250VAC. It adopts the delayed fuse/slow-blow (Slo-Blo/Time Lag) feature, which can withstand short-term surge current without tripping. Its breaking capacity is 35A, and the operating temperature range is -40°C to +85°C.

Vishay

IRFD014PBF is a N-channel power MOSFET introduced by Vishay, featuring a unique 4-pin HVMDIP (HexDIP) through-hole package. This package is suitable for automated insertion and can be stacked on standard 0.1-inch pin center distance, with the dual drain pins serving as a heat dissipation path.

TI

12000

SN74AHC1G00BVR is a single-channel 2-input positive logic AND-NOT gate from the Texas Instruments 74AHC series. It is packaged in a SOT-23-5 micro surface-mount package. This device operates within a wide voltage range of 2V to 5.5V and realizes the AND-NOT logic function of Y = A • B. Its Schmidt trigger input enables it to have a high tolerance for slowly varying input signals, and the push-pull output provides a driving capability of up to ±8mA.

TST

2000

TA2621A is a high-frequency surface acoustic wave (SAW) filter specifically designed for wireless communication. Also known as bulk acoustic wave (BAW) filter, it is mainly used for selecting radio frequency signals in wireless devices such as WiFi. The core function of this filter is to remove noise and allow only specific frequency signals to pass through. It can enable signals with a center frequency of 2442 MHz and a bandwidth of 79 MHz to pass through, while effectively suppressing out-of-band interference. This device is packaged in a 1.1mm × 0.9mm ultra-small surface mount (SMD) format, which is suitable for use on space-sensitive high-density circuit boards. Its operating temperature range is from -30°C to +85°C.

TI

20000

This is a 3V to 5.5V multi-channel RS-232 line driver/receiver (transceiver), conforming to the TIA/EIA-232-F standard. This device integrates 2 drivers and 2 receivers, supporting full-duplex communication. The internal dual charge pump circuit allows for operation with a single power supply ranging from 3V to 5.5V, and generates the required RS-232 levels through 4 0.1μF external capacitors.

ADI

25000

The AD704ARZ-16-REEL is a four-channel, low-power, high-precision bipolar operational amplifier introduced by ADI. It adopts a 16-pin SOIC wide-body surface-mount packaging.

ST

20000

L7915CV-DG is a fixed-output -15V three-terminal negative voltage linear regulator launched by STMicroelectronics. It is packaged in a TO-220-3 through-hole style. This device belongs to the L79xxC series and is a complementary negative voltage regulator to the L78xx positive voltage series. It is particularly suitable for isolated power supply systems that require both positive and negative voltages. The input voltage range of this voltage regulator is from -23V to -35V, with a fixed output of -15V and a maximum output current of 1.5A. The typical voltage drop is 1.1V at 1A, and it has a power supply ripple rejection ratio (PSRR @ 120Hz) of 60dB. This device is equipped with thermal overload protection, short circuit protection and output conversion safety working area protection functions.

Zilog

20000

Z8018008VSG is an 8-bit enhanced Z180 microprocessor (MPU) launched by Zilog Company. It adopts a 68-pin PLCC surface mount packaging. This chip is based on the classic Z80 core and belongs to the Z80180 series. It is specifically designed for embedded control and communication applications. The Z80180 core processor is compatible with the Z80 instruction set target code. It also adds some enhanced instructions (including 8-bit multiplication and division), and adopts a microcode architecture, resulting in fewer clock cycles for the execution of many instructions. Its internal components include multiple system resources: the Memory Management Unit (MMU) supports addressing up to a 1MB physical address space, a 2-channel DMA controller, a 2-channel asynchronous serial communication interface (ASCI), 2 programmable reloadable timers, and a clock serial I/O (CSIO) interface.

ST

15000

LD1117DT33CTR is a fixed 3.3V output low-dropout linear regulator (LDO) introduced by STMicroelectronics. It adopts a DPAK (TO-252-3) surface mount packaging. This device belongs to the LD1117 series and is specifically designed for general power management applications that require moderate current and low power consumption.

C&K

10000

TDA02H0SB1R is a 2-position ultra-small surface-mounted dip switch (DIP Switch) introduced by C&K, belonging to the TDA series.This switch features a single-pole, single-throw (SPST) circuit configuration with two positions and normally open (OFF-ON) functionality. It uses a recessed flat rocker actuator for intuitive operation. This device is used to configure the working mode, address, or other logical states of electronic equipment through manual operation, providing reliable control of circuit on-off. This switch has a single-pole single-throw (SPST) circuit structure with 2 positions and an on-off (OFF-ON) function.

ESPRESSIF

2000

ESP32-S3-WROOM-1-N8 is a universal Wi-Fi + low-power Bluetooth MCU module launched by Espressif Technology, equipped with the ESP32-S3 series chip. This module is in SMD packaging and has a size of 18mm × 25.5mm × 3.1mm. The core processor is the Xtensa® 32-bit LX7 dual-core processor, with a maximum operating frequency of 240 MHz and a single-precision floating-point unit support. In terms of storage, it is equipped with 384 KB ROM, 512 KB SRAM, and a built-in 8 MB Quad SPI Flash, without onboard PSRAM. Wireless connection supports 2.4 GHz Wi-Fi (802.11 b/g/n) and low-power Bluetooth 5 (BLE). The Wi-Fi data rate can reach up to 150 Mbps. The built-in PCB board is equipped with an antenna, supporting multiple encryption methods such as AES, ECC, RSA, and SHA. This module offers a wide range of peripheral interfaces, including ADC, GPIO, I2C, I2S, SPI, UART, USB OTG, PWM, JTAG, SDIO, etc. The operating voltage range is 3.0V to 3.6V, and the operating temperature range is from -40°C to +85°C.

ADI

5000

LTC2051IDD#PBF is a dual-channel zero-drift operational amplifier introduced by ADI. It adopts a DFN-8 (3mm × 3mm) micro surface-mount package. This device combines almost zero direct offset and drift with excellent AC performance, and is specifically designed for precise measurement applications that require extremely high accuracy and long-term stability. This device employs the Chopper-Stabilized technology, which is an automatic zero-stabilization architecture. It can continuously self-calibrate to eliminate input offset errors, thereby ensuring the device maintains extremely high accuracy throughout its operating temperature range.

YE

30000

DSWB01LHGET is a 1-bit red toggle-style potentiometer switch, installed using through-hole plug-in (DIP) method. This component belongs to the DSWB series and is used for manually configuring the working mode, address, or other logical states of the device. Its core parameters are as follows: single-pole single-throw (SPST) circuit, 1-bit switch. Rated voltage 24V DC, rated current 25mA. Mechanical life approximately 2000 times. It adopts a red protruding push-rod design, making the operation intuitive. Operating temperature range -20°C to +70°C.

Diodes

15000

BAT54S-7-F is a Schottky switching diode introduced by Diodes Inc., featuring a SOT-23 micro surface-mount package. Internally, this device consists of two diodes connected in series, offering low on-state voltage and extremely fast switching speed. It is specifically designed for high-frequency switching and circuit protection applications. The reverse recovery time of this diode is only 5ns, enabling high-frequency switching. Its main parameters are: reverse peak voltage 30V, average rectification current 200mA, and forward drop 800mV @ 100mA.