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Home > Products > Circuit Protection > Transient Voltage Suppressors (TVS) > TVS Diodes

Nexperia USA Inc. NUP1301-QR

Name: NUP1301-QR
Brand: Nexperia USA Inc.
SKU: NUP1301-QR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NUP1301-QR

Manufacturer:: Nexperia USA Inc.

Category:: TVS Diodes

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: NUP1301-QR.pdf

Description:: NUP1301-Q/SOT23/TO-236AB

Quantity:: RFQ Add To RFQ list

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Inventory:2,472

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Product details

Overview

NUP1301-Q from Nexperia is an ultra-low-capacitance ESD protection array in SOT23 package, designed for rail-to-rail protection of a single high-speed signal line (e.g., I²C, audio, or antenna supply). It delivers 0.6 pF typical diode capacitance, 30 kV IEC 61000-4-2 contact ESD rating, and clamps transients to ≤20 V at 11 A surge current.

For engineers reviewing the NUP1301-Q datasheet, NUP1301-Q pinout, NUP1301-Q application, or NUP1301-Q equivalent, this device is selected for high-fidelity analog interfaces, automotive infotainment data lines, and space-constrained PCBs where sub-1 pF loading and AEC-Q101 qualification are mandatory.

Technical Context

The NUP1301-Q implements a bidirectional rail-to-rail ESD clamp using two series-connected diodes between I/O and GND/VCC. Transient energy above ~715 mV forward drop is shunted either to ground (pin 1) or supply rail (pin 2), enabling low-voltage clamping without external bias.

Its architecture supports fast response (<1 ns rise time per IEC 61000-4-2) and maintains signal integrity via 0.6 pF capacitance at 0 V reverse bias - critical for >100 MHz video and Class-D audio paths. Thermal resistance is 360 K/W junction-to-solder-point, validated on FR4 with standard footprint.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RWM	80 V repetitive peak reverse voltage - ensures safe operation across 24 V automotive rails and 3.3/5 V logic interfaces.
C_d	0.6 pF typical diode capacitance at 1 MHz, 0 V - preserves signal edge rate and minimizes insertion loss in high-speed analog/digital lines.
I_PPM	11 A peak pulse current (8/20 µs) - handles IEC 61000-4-5 surge events without degradation.
V_CL	20 V clamping voltage at 11 A - limits transient overvoltage to levels compatible with 3.3 V and 5 V IC inputs.
I_R	≤30 nA reverse leakage at 25 °C, 25 V - prevents DC loading and battery drain in always-on sensor or antenna circuits.
ESD Rating	30 kV contact discharge (IEC 61000-4-2 Level 4) - exceeds industrial and automotive ESD immunity requirements.
AEC-Q101	Qualified for automotive applications - supports temperature range from −55 °C to +150 °C junction operation.

Pinout & Package

SOT23 (TO-236AB) plastic surface-mount package: 3-terminal, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1.0 mm body. Standard footprint per Fig. 10 (reflow) and Fig. 11 (wave soldering).

Pin/Terminal	Circuit Role	Design Meaning
1	GND	Low-impedance return path for negative-going transients; must be connected to solid system ground plane.
2	V_CC	Positive rail connection for clamping positive transients; ties to local supply with low-inductance decoupling.
3	I/O	Protected signal line terminal; connects directly to connector or IC pin requiring ESD hardening.

Key Features

Feature	Design Value
Rail-to-rail bidirectional clamping	Enables protection of unidirectional or bidirectional signals (e.g., I²C) without polarity constraints or external bias.
0.6 pF capacitance at 0 V	Maintains signal integrity for >100 MHz analog video, audio, and high-speed serial links with minimal phase shift.
30 kV ESD contact rating	Exceeds IEC 61000-4-2 Level 4 - suitable for handheld, dashboard, and exposed connector applications.
AEC-Q101 qualified	Validated for automotive underhood and cabin environments including thermal cycling, humidity, and vibration stress.
20 V clamping at 11 A	Protects downstream 3.3 V/5 V logic inputs during surge events while avoiding latch-up or permanent damage.

Applications

Telecom Data Lines

I²C Bus Protection

Use Scenario: Protecting RS-485 or USB 2.0 D+/D− lines in outdoor telecom gateways exposed to lightning-induced surges.

IC Role / Device Role / Timing Role: Bidirectional ESD clamp placed at board edge connector, shunting transients to local GND/VCC before reaching PHY IC.

Use Value: 0.6 pF loading avoids signal integrity degradation at 480 Mbps; 11 A surge rating withstands induced 8/20 µs waveforms.

Use Scenario: Safeguarding I²C clock/data lines between MCU and EEPROM/sensor in automotive body control modules.

IC Role / Device Role / Timing Role: Rail-to-rail ESD suppressor on SDA/SCL traces, operating without external bias and preserving bus timing.

Use Value: Sub-1 pF capacitance prevents rise-time degradation; AEC-Q101 qualification ensures reliability across −40 °C to +125 °C ambient.

Analog Audio Interface

Class-D Amplifier Input

Use Scenario: Shielding line-in or headphone output paths in infotainment head units from user-hand ESD events.

IC Role / Device Role / Timing Role: Low-capacitance clamp on differential audio pair, minimizing crosstalk and high-frequency attenuation.

Use Value: 30 nA leakage avoids DC offset drift; 20 V clamping prevents amplifier input stage saturation during ESD strikes.

Use Scenario: Protecting PWM input pins of Class-D audio amplifiers in vehicle sound systems from ESD coupling via speaker cables.

IC Role / Device Role / Timing Role: High-speed transient suppressor on digital control lines, placed within 3 mm of amplifier input pad.

Use Value: <1 ns response time prevents false triggering; 0.6 pF capacitance avoids PWM edge rounding at >500 kHz switching frequencies.

Equivalent & Alternatives

The following parts are listed as comparable options for similar ESD protection applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor ESD9X3.3S	0.8 pF capacitance, 3.3 V working voltage, unidirectional configuration.	Requires separate GND and V_CC connections; not rail-to-rail - unsuitable for bidirectional buses like I²C.	Select only when protecting unidirectional 3.3 V lines with higher voltage margin and no need for rail-to-rail symmetry.
Infineon ESD204-B1-W02	0.35 pF capacitance, 4-channel array, 5 V working voltage, AEC-Q101 qualified.	Higher channel count but larger 0402 DFN package; lacks integrated V_CC pin - requires external TVS on supply rail.	Prefer for multi-line protection in compact layouts; avoid when single-line rail-to-rail clamping with minimal BOM is required.

Compared with ESD9X3.3S and ESD204-B1-W02, the NUP1301-Q uniquely combines rail-to-rail operation, 0.6 pF capacitance, and integrated V_CC/GND terminals in SOT23 - making it optimal for space-limited, bidirectional, automotive-grade signal protection.

Availability

NUP1301-Q is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial HMI touch interfaces, and consumer audio equipment requiring stable component supply with AEC-Q101 compliance and traceable sourcing.

Supply support for NUP1301-Q includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert specializing in high-performance, reliable discrete, logic, and MOSFET devices, with manufacturing rooted in process technology and automotive-grade quality systems.

The NUP1301-Q belongs to Nexperia's ultra-low-capacitance ESD protection portfolio, engineered specifically for high-speed analog and digital interfaces in automotive and industrial environments where signal fidelity and robustness are co-critical.

FAQ

What is the maximum recommended trace length between NUP1301-Q and the protected I/O pin?

Per Nexperia application guidance, the trace from pin 3 (I/O) to the protected IC pin must be ≤3 mm, and the ground path from pin 1 to system ground plane must be as short and low-inductance as possible. Longer traces increase inductance, degrading clamping performance during fast ESD events and raising peak voltage seen by downstream components.

Can NUP1301-Q protect both 3.3 V and 5 V I/O rails without modification?

Yes - its 80 V V_RWM and rail-to-rail architecture allow direct use on 3.3 V or 5 V systems. The clamping voltage remains ≤20 V regardless of supply level, and the 30 kV ESD rating applies independently of V_CC value, provided V_CC is stable and adequately decoupled.

Does NUP1301-Q require external capacitors or resistors for basic ESD protection?

No - the device operates standalone with only three connections: I/O (pin 3), GND (pin 1), and V_CC (pin 2). External 100 nF ceramic decoupling near pin 2 is recommended for surge current return path integrity, but no series resistors or RC filters are needed for core ESD functionality.

How does NUP1301-Q perform under elevated temperature conditions?

At T_j = 150 °C, reverse leakage rises to 35 µA (vs. 100 nA at 25 °C), and clamping voltage increases modestly - V_CL remains ≤22 V at 11 A. Its AEC-Q101 qualification confirms full functionality across −55 °C to +150 °C junction temperature, with derated power dissipation per R_th(j-a) = 500 K/W.

NUP1301-QR Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Package/Case:: TO-236-3, SC-59, SOT-23-3

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Zener

Unidirectional Channels:: 2

Bidirectional Channels:: -

Voltage - Reverse Standoff (Typ):: 80V (Max)

Voltage - Breakdown (Min):: 100V

Voltage - Clamping (Max) @ Ipp:: 20V

Current - Peak Pulse (10/1000µs):: 11A (8/20µs)

Power - Peak Pulse:: 220W

Power Line Protection:: No

Applications:: Telecom

Capacitance @ Frequency:: 0.6pF @ 1MHz

Operating Temperature:: -55°C ~ 150°C (TA)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

NUP1301-QR FAQ

1.How can I place an order for NUP1301-QR through Aetrix?

Please submit a Request for Quotation (RFQ) for NUP1301-QR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for NUP1301-QR reliable?

The price and inventory of NUP1301-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NUP1301-QR is usually 5 days.

3.What payment methods are accepted for NUP1301-QR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NUP1301-QR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NUP1301-QR?

NUP1301-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NUP1301-QR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for NUP1301-QR?

For technical support, including NUP1301-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NUP1301-QR requirements.

6.How does Aetrix verify that NUP1301-QR is sourced from the original manufacturer or authorized distributors?

All NUP1301-QR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that NUP1301-QR meets industry standards.

7.What is the process for return or replacement of NUP1301-QR?

All NUP1301-QR units undergo pre-shipment inspection (PSI). If there is an issue with NUP1301-QR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The NUP1301-QR part is unused and in its original packaging.

Return procedure for NUP1301-QR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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