SHENZHEN GANGXINLI ELECTRONICS CO.,LTD
Professional Electronic Component Distributor!
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SHENZHEN GANGXINLI ELECTRONICS CO.,LTD
Professional Electronic Component Distributor!
2026/5/28
The SP1003-01ETG is a unidirectional TVS diode manufactured by Littelfuse Inc., belonging to the classic SPA® series. It is specially designed for fast transient surge suppression to protect sensitive electronic circuits from overvoltage and electrostatic damage.
Category:Circuit Protection,Transient Voltage Suppressors (TVS),TVS Diodes
Voltage - Clamping (Max) @ Ipp:12V (Typ)
Mfr:Littelfuse Inc.
Current - Peak Pulse (10/1000µs):7A (8/20µs)
Series:SP1003, SPA®
Packaging:Tape & Reel
Operating Temperature:-40°C ~ 125°C (TJ)
Part Status:Active
Type:Zener
Unidirectional Channels:1
Mounting Type:Surface Mount
Voltage - Reverse Standoff (Typ):5V (Max)
Package / Case:SOD-882
Voltage - Breakdown (Min):6V
Unidirectional Protection: This single-channel unidirectional TVS diode can precisely suppress one-way transient surges, providing targeted overvoltage protection for single-polarity signal and power circuits.
Low Clamping Voltage:It features a typical maximum clamping voltage of 12V, which can quickly limit surge voltage within a safe range and effectively avoid breakdown of sensitive chip pins.
Strong Surge Resistance:It supports a peak pulse current of 7A under 8/20µs surge test conditions, delivering excellent transient impact resistance for sudden voltage surges in circuits.
Stable Voltage Rating:With a 5V maximum reverse standoff voltage and 6V minimum breakdown voltage, it matches low-voltage 5V circuit systems without interfering with normal circuit operation.
Miniature Packaging:Adopting compact SOD-882 surface-mount package, it occupies minimal PCB space and supports high-density and miniaturized electronic product design.
High Reliability:As an active mass-produced component with mature Zener diode process, it features stable performance and long service life for long-term continuous circuit protection.
USB Port Protection:Applied to 5V USB power and signal ports of mobile power banks and Bluetooth speakers to suppress static electricity and plug-in surge voltage damage.
Sensor Circuit Guard:Used for low-voltage signal protection of temperature and humidity sensors and pressure sensors in smart home devices to prevent transient voltage from distorting sampling signals.
MCU Pin Defense:Deployed on the I/O pins of 5V single-chip microcontrollers in wearable devices to avoid burnout of control pins caused by accidental surge impact.
Audio Interface Protection:Installed on the audio input and output interfaces of headsets and portable audio players to eliminate static interference and ensure clear audio signal transmission.
Module Power Guard:Used in the 5V power supply circuit of wireless communication modules such as WiFi and Bluetooth to stabilize power voltage and prevent surge damage to module chips.
Automotive Circuit Shield:Applied to vehicle-mounted small electronic accessories such as car chargers and vehicle Bluetooth modules to adapt to complex automotive power surge environments for circuit protection.
The SP1003-01ETG is a high-performance miniature unidirectional TVS diode with low clamping voltage and strong surge resistance, perfectly matching 5V low-voltage circuit protection scenarios. With reliable performance and compact size, it is an ideal protection component for consumer electronics, smart devices and vehicle electronic systems.