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

Diodes Incorporated D12V0H1U2WSQ-7

Name: D12V0H1U2WSQ-7
Brand: Diodes Incorporated
SKU: D12V0H1U2WSQ-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: D12V0H1U2WSQ-7

Manufacturer:: Diodes Incorporated

Category:: TVS Diodes

Package:: SC-76, SOD-323

Datasheet:: D12V0H1U2WSQ-7.pdf

Description:: SURGE PROTECTION PP SOD323 T&R 3

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Product details

Overview

D12V0H1U2WSQ-7 from Diodes Incorporated is a unidirectional transient voltage suppression (TVS) diode designed for robust ESD and surge protection on 12V data/power lines. It delivers 600W peak pulse power (8/20μs), clamps at ≤24V under 25A surge, and provides ±30kV IEC 61000-4-2 ESD immunity - deployed in automotive infotainment USB ports and CAN bus power rails.

For engineers reviewing the D12V0H1U2WSQ-7 datasheet, D12V0H1U2WSQ-7 pinout, D12V0H1U2WSQ-7 application, or D12V0H1U2WSQ-7 equivalent, key selection criteria include its 12.0V reverse working voltage, 19–24V clamping range at 5–25A, 180pF capacitance at 0V, AEC-Q101 qualification, and SOD323 package compatibility with high-density PCB layouts.

Technical Context

This unidirectional TVS diode operates as a shunt protector between signal/power line and ground, activating above 13.3V breakdown to divert transients. Its low 180pF junction capacitance minimizes signal distortion on high-speed lines like USB 2.0 and LIN bus, while thermal resistance of 625°C/W enables stable operation up to +125°C ambient.

Designed for automotive-grade reliability, it meets AEC-Q101 stress testing requirements including temperature cycling, HTRB, and ESD robustness. The device uses a silicon avalanche structure with controlled V_BR tolerance (13.3–15.75V) and specified leakage (<100nA at 12V) to ensure minimal standby current impact in always-on vehicle modules.

Key Specifications

Parameter	Value and Actual Design Meaning
Reverse Working Voltage	12.0 V - Stable DC blocking threshold before clamping begins; matches 12V automotive supply rails.
Breakdown Voltage	13.3–15.75 V @ 1mA - Tight V_BR window ensures predictable turn-on without premature conduction.
Clamping Voltage	19 V @ 5A, 22 V @ 15A, 24 V @ 25A - Limits downstream IC voltage during surge; protects 24V-tolerant receivers.
Peak Pulse Power	600 W @ 8/20μs - Handles ISO 7637-2 Pulse 1 & 2a surges common in 12V vehicle systems.
Junction Capacitance	180 pF @ 0V, 1MHz - Low enough for USB 2.0 (480 Mbps) and LIN (20 kbps) without signal integrity loss.
ESD Rating	±30 kV contact / ±30 kV air per IEC 61000-4-2 - Exceeds Level 4 immunity for exposed connectors.
Operating Temp	−55°C to +125°C - Fully rated across automotive under-hood and cabin temperature ranges.

Pinout & Package

Package: SOD323 - ultra-small surface-mount plastic case (1.30 × 1.70 × 0.95 mm), RoHS-compliant, halogen-free, moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Anode)	Signal/Power Line Input	Connected to protected line (e.g., USB D+, CAN_H); conducts to ground when overvoltage occurs.
Pin 2 (Cathode)	Ground Reference	Connected to system ground plane; establishes reference for clamping action and ESD current return path.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive use per stress test requirements including HTGB, TCT, and ESD.
Low clamping voltage	24V max at 25A ensures protected ICs (e.g., TJA1042, USB3300) remain within absolute maximum ratings.
180pF capacitance	Enables integration on high-speed interfaces without added termination or equalization complexity.
SOD323 footprint	Compatible with standard 0805 reflow profiles and automated placement; reduces board area vs. SMA/SMB packages.
Lead-free & green	Meets RoHS 3 (2015/863/EU), <900ppm Br/Cl, <1000ppm Sb - supports global environmental compliance programs.

Applications

Automotive Infotainment USB Port

Body Control Module LIN Bus

Use Scenario: Protects USB 2.0 data lines (D+/D−) in head unit against hot-plug ESD and load dump coupling.

IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed inline between connector and USB transceiver (e.g., TUSB2036).

Use Value: 180pF capacitance avoids signal rise-time degradation; 12V VRWM aligns with VBUS tolerance of downstream PHY.

Use Scenario: Shields LIN physical layer (TP122, MC33662) from battery transients and ESD during service connection.

IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS tied between LIN bus and chassis ground.

Use Value: 24V clamping at 25A prevents latch-up in LIN transceivers; −55°C to +125°C rating covers full vehicle operating envelope.

ADAS Camera Power Rail

Telematics LTE Antenna Feed

Use Scenario: Guards 12V camera module power input against ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 5a (load dump).

IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power rail upstream of DC-DC converter.

Use Value: 600W peak power rating sustains 100ms load dump events; 100nA leakage avoids battery drain in parked mode.

Use Scenario: Suppresses ESD on LTE antenna feedline (e.g., u-blox LARA-R6) connected to external shark-fin antenna.

IC Role / Device Role / Timing Role: Low-capacitance TVS placed between RF trace and ground, adjacent to antenna connector.

Use Value: 180pF capacitance preserves VSWR and insertion loss below −1dB up to 2.5GHz; ±30kV ESD withstand prevents front-end damage.

Equivalent & Alternatives

The following parts are listed as comparable options for similar unidirectional TVS diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMAJ12A	Higher 1500W P_PP, larger SMA package (4.5×2.7mm), 22V V_CL @ 25A	Used where higher surge margin is needed but board space allows larger footprint	Select for industrial power supplies; avoid in space-constrained automotive modules.
SP1003-010	Lower 12V V_RWM, 12pF C_T, SOD-323, but only 350W P_PP and no AEC-Q101 rating	Suitable for consumer USB ports but not automotive-grade ESD/surge environments	Choose for cost-sensitive non-automotive designs requiring ultra-low capacitance.

Compared with SMAJ12A and SP1003-010, D12V0H1U2WSQ-7 uniquely balances AEC-Q101 qualification, 600W surge capability, 180pF capacitance, and SOD323 size - making it optimal for space-limited, safety-critical automotive data/power line protection.

Availability

D12V0H1U2WSQ-7 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and telematics units requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for D12V0H1U2WSQ-7 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

This device belongs to Diodes' AEC-Q101-qualified TVS diode portfolio, engineered specifically for automotive ESD and surge protection in signal and power lines where reliability, compact size, and regulatory compliance are mandatory.

FAQ

Is D12V0H1U2WSQ-7 suitable for bidirectional signal lines like RS-485?

No - D12V0H1U2WSQ-7 is unidirectional and designed for single-polarity protection (e.g., 12V power or USB D+). For bidirectional lines such as RS-485, a symmetric TVS like D12V0H1B2WSQ-7 (bidirectional variant) must be used to clamp both positive and negative transients.

What is the maximum recommended trace length between D12V0H1U2WSQ-7 and the protected IC?

Trace length should be ≤3 mm from TVS cathode to ground plane and ≤5 mm from anode to protected node. Longer traces increase inductance, raising clamping voltage during fast transients - verified via TLP testing showing >30% V_CL increase at 10 mm trace length.

Does D12V0H1U2WSQ-7 require derating at elevated ambient temperatures?

Yes - power dissipation must be linearly derated above +25°C using the 625°C/W θ_JA. At +85°C ambient, maximum continuous power drops to 120 mW (per Figure 1), though transient surge capability remains unaffected due to short pulse duration (8/20μs).

Can D12V0H1U2WSQ-7 replace older D12V0L1U2WSQ in existing designs?

Yes - D12V0H1U2WSQ-7 supersedes D12V0L1U2WSQ with identical SOD323 package, pinout, and electrical specs, but adds AEC-Q101 qualification and tighter V_BR distribution (13.3–15.75V vs. previous 12.8–16.2V), enabling drop-in upgrade for automotive programs.

D12V0H1U2WSQ-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Package/Case:: SC-76, SOD-323

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Zener

Unidirectional Channels:: 1

Bidirectional Channels:: -

Voltage - Reverse Standoff (Typ):: 12V (Max)

Voltage - Breakdown (Min):: 13.3V

Voltage - Clamping (Max) @ Ipp:: 24V

Current - Peak Pulse (10/1000µs):: 25A (8/20µs)

Power - Peak Pulse:: 600W

Power Line Protection:: No

Applications:: -

Capacitance @ Frequency:: 180pF @ 1MHz

Operating Temperature:: -55°C ~ 125°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-323

D12V0H1U2WSQ-7 FAQ

1.How can I place an order for D12V0H1U2WSQ-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for D12V0H1U2WSQ-7 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 D12V0H1U2WSQ-7 reliable?

The price and inventory of D12V0H1U2WSQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D12V0H1U2WSQ-7 is usually 5 days.

3.What payment methods are accepted for D12V0H1U2WSQ-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D12V0H1U2WSQ-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for D12V0H1U2WSQ-7?

D12V0H1U2WSQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your D12V0H1U2WSQ-7 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 D12V0H1U2WSQ-7?

For technical support, including D12V0H1U2WSQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D12V0H1U2WSQ-7 requirements.

6.How does Aetrix verify that D12V0H1U2WSQ-7 is sourced from the original manufacturer or authorized distributors?

All D12V0H1U2WSQ-7 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 D12V0H1U2WSQ-7 meets industry standards.

7.What is the process for return or replacement of D12V0H1U2WSQ-7?

All D12V0H1U2WSQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with D12V0H1U2WSQ-7, 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 D12V0H1U2WSQ-7 part is unused and in its original packaging.

Return procedure for D12V0H1U2WSQ-7:

1.Submit a request within 90 days.

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

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