Choose your country or region.

EnglishFrançaispolskiSlovenija한국의DeutschSvenskaSlovenskáMagyarországItaliaहिंदीрусскийTiếng ViệtSuomiespañolKongeriketPortuguêsภาษาไทยБългарски езикromânescČeštinaGaeilgeעִבְרִיתالعربيةPilipinoDanskMelayuIndonesiaHrvatskaفارسیNederlandTürk diliΕλλάδαRepublika e ShqipërisëአማርኛAzərbaycanEesti VabariikEuskeraБеларусьíslenskaBosnaAfrikaansIsiXhosaisiZuluCambodiaსაქართველოҚазақшаAyitiHausaКыргыз тилиGalegoCatalàCorsaKurdîLatviešuພາສາລາວlietuviųLëtzebuergeschmalaɡasʲМакедонскиMaoriМонголулсবাংলা ভাষারမြန်မာनेपालीپښتوChicheŵaCрпскиSesothoසිංහලKiswahiliТоҷикӣاردوУкраїнаO'zbekગુજરાતીಕನ್ನಡkannaḍaதமிழ் மொழி繁体中文
Home > Products > Integrated Circuits (ICs) > Specialized ICs > SOT03C
Image may be representation.
See specs for product details.

SOT03C

Manufacturer Part Number:
SOT03C
Manufacturer / Brand
Semitehelec
Part of Description:
Semitehelec SOT-23
Datasheets:
Lead Free Status / RoHS Status:
RoHS Compliant
Stock Condition:
New original, 6200 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

Inquiry Online

Please complete all required fields with your contact information.Click "SUBMIT REQUEST" we will contact you shortly by email. Or Email us: Info@IC-Components.com
Part Number
Manufacturer
Require Quantity
Target Price(USD)
Company Name
Contact Name
E-mail
Phone
Message
Please enter Verify Code and click "Submit"
Part Number SOT03C
Manufacturer / Brand Semitehelec
Stock Quantity 6200 pcs Stock
Category Integrated Circuits (ICs) > Specialized ICs
Description Semitehelec SOT-23
Lead Free Status / RoHS Status: RoHS Compliant
Condition New Original Stock
Warranty 100% Perfect Functions
Lead Time 2-3days after payment.
Payment Credit Card / PayPal / Telegraphic Transfer (T/T) / Western Union
Shipping by DHL / Fedex / UPS / TNT
Port HongKong
RFQ Email Info@IC-Components.com

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

We can offer worldwide express delivery service, such as DHLor FedEx or TNT or UPS or other forwarder for shipment.

Global Shipment by DHL/FedEx/TNT/UPS

Shipping Fees reference DHL/FedEx
1). You can offer your express delivery account for shipment, ifyou haven’t any express account for shipment, we can offer our account inadvance.
2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



We accept the payment terms: Telegraphic Transfer(T/T), Credit Card, PayPal and Western Union.

PayPal:

PayPal Bank Information:
Company Name : IC COMPONENTS LTD
Paypal ID: Info@IC-Components.com

BANK TRANSFAR (Telegraphic Transfer)

Payment For Telegraphic Transfers:
Company Name : IC COMPONENTS LTD Beneficiary Account Number : 549-100669-701
Beneficiary Bank name : Bank of Communications (Hong Kong) Ltd Beneficiary Bank Code : 382 (for local payment)
Beneficiary Bank SWIFT : COMMHKHK
Beneficiary Bank Address : Tsuen Wan Market Street Branch 53 Market Street, Tsuen Wan N.T., Hong Kong

Any inquires or questions, please kindly contact us Email: Info@IC-Components.com


Frequently Asked Questions

Can the SOT03C from Semitehelec be used in a 3.3V to 5V level-shifting application with bidirectional I/O signals?
The SOT03C is not designed for bidirectional level shifting. It is a unidirectional voltage-level translator in SOT-23-6 package optimized for specific direction control (A-to-B or B-to-A). Attempting bidirectional operation without external direction control logic may lead to signal contention or incorrect voltage translation. For bidirectional applications, consider dedicated bidirectional level shifters such as the TXB0104 or SN74LVC8T245, which include automatic direction sensing and are better suited for open-drain or push-pull interfaces.
What are the power sequencing requirements when using the SOT03C in a multi-voltage system with 1.8V and 3.3V domains?
The SOT03C does not require strict power sequencing between VCCA and VCCB, but it is recommended to avoid applying input signals before both supplies are stable. Applying signals with an unpowered supply rail may cause latch-up or unintended conduction through internal ESD structures. In systems where one domain powers up significantly earlier, use power-on reset circuits or enable sequencing to prevent transient signal states from propagating.
Is the SOT03C suitable for replacing a TXS0102 in a low-speed I2C interface operating at 100 kHz?
The SOT03C is not a direct replacement for the TXS0102. While both are voltage translators, the TXS0102 includes integrated pull-up resistors and supports automatic bidirectional translation ideal for I2C. The SOT03C lacks internal pull-ups and requires external resistors, increasing BOM complexity. Additionally, the SOT03C has higher propagation delay variation, which may affect timing margins in multi-master I2C systems. For I2C applications, the TXS0102 or PCA9306 are more appropriate.
Can the SOT03C operate reliably in an industrial environment with ambient temperatures up to 105°C?
The SOT03C is rated for an operating temperature range of -40°C to +85°C, as specified in the Semitehelec datasheet. Continuous operation at 105°C exceeds this limit and may result in degraded performance, increased leakage current, or long-term reliability issues such as electromigration. For industrial applications exceeding 85°C, select a qualified industrial-grade alternative with a 105°C rating, such as the SN74LVC1T45 from Texas Instruments in a similar SOT-23-6 package.
What happens if the input signal exceeds VCC by more than 0.5V on the SOT03C?
The SOT03C does not support overvoltage-tolerant inputs beyond VCC + 0.5V. Applying a signal that exceeds this threshold, such as a 3.6V signal on a 3.3V rail, can forward-bias internal ESD diodes, causing excessive current flow into the VCC rail. This may destabilize the power supply or damage the device. For overvoltage scenarios, use a translator with Ioff or partial-power-down protection, or add external current-limiting resistors and clamping diodes.
Are there pin-compatible alternatives to the SOT03C that offer lower propagation delay for high-speed SPI interfaces?
The SOT03C has a typical propagation delay of 5–7 ns, which may be marginal for SPI clock lines above 20 MHz. Pin-compatible alternatives with lower delay include the SN74LVC1T45 (3.5 ns typical) or the NC7WZ17 (2.5 ns typical), both available in SOT-23-6. However, verify voltage translation directionality and enable pin requirements, as these may differ. The SOT03C remains suitable for slower SPI modes (Mode 0–3 under 10 MHz) where timing skew is less critical.
Can the SOT03C be used in a battery-powered design where one voltage domain is periodically powered down?
The SOT03C does not support partial-power-down operation. If one supply (e.g., VCCB) is powered down while the other remains active, input signals on the powered side may back-power the unpowered domain through internal circuitry, leading to unintended behavior or increased quiescent current. For power-down applications, use a level shifter with Ioff (partial-power-down protection), such as the TXB0104, which isolates outputs when a supply is absent.
What external components are required when designing with the SOT03C in a 1.2V to 3.3V translation application?
The SOT03C requires external pull-up resistors on both the A and B sides if driving open-drain or bidirectional signals. Typical values range from 1 kΩ to 10 kΩ depending on speed and capacitance. No bypass capacitors are strictly required, but a 0.1 µF ceramic capacitor placed close to VCCA and VCCB is recommended to suppress noise in high-frequency environments. Ensure resistor values do not exceed the translator’s maximum pull-up current capability to avoid signal degradation.
Is the SOT03C appropriate for translating signals in a daisy-chained JTAG interface with multiple devices?
The SOT03C can be used for JTAG signal translation (TCK, TMS, TDI) if propagation delay and skew are carefully managed. However, in daisy-chained configurations with long traces or multiple translators, cumulative delay may violate TCK setup/hold times at higher frequencies (>10 MHz). Additionally, the SOT03C does not buffer signals, so signal integrity may degrade. For robust JTAG translation, consider a dedicated buffer-translator like the SN74LVC8T245 with matched propagation delay and output drive strength.
How does the SOT03C compare to the NXS0102 in terms of power consumption and enable functionality?
The SOT03C lacks an enable pin and draws continuous quiescent current (typically 1–5 µA), whereas the NXS0102 includes an OE (output enable) pin that allows power-down to near-zero current when disabled. In always-on applications, the difference is negligible, but in battery-powered systems requiring periodic shutdown, the NXS0102 offers superior power management. The SOT03C is simpler to implement but less flexible in dynamic power control scenarios.

Recent Reviews

Leave Comment
Hello, you have not logged in, please log in
User Login

Forgot password?

No account yet? Register now

Tips
Please speak legally
Your email will be hidden
Please complete all required fields ( denoted with* )
Mark
5.0

You May Also Be Interested In:


SOT03C

Semitehelec

Semitehelec SOT-23

In Stock: 6200

SUBMIT RFQ