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STMicroelectronics HSP181-2W3Y
- Part No.:
- HSP181-2W3Y
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
HSP181-2W3Y.pdf
- Description:
- AUTOMOTIVE GRADE 18V DUAL-LINE H
- Quantity:
- Payment:
- Shipping:
Inventory:11,332
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Product details
Overview
HSP181-2W3Y from STMicroelectronics is an AEC-Q101-qualified dual-line ESD protection array for high-speed differential interfaces, featuring 2.1 pF line capacitance, 1.7 GHz bandwidth, 18 V stand-off voltage (VRM), and ±12 kV contact/±30 kV air ESD immunity per IEC 61000-4-2. It is designed to protect USB 2.0 and NFC antenna I/O in automotive and portable reader applications without signal degradation.
For engineers reviewing the HSP181-2W3Y datasheet, HSP181-2W3Y pinout, HSP181-2W3Y application, or HSP181-2W3Y equivalent, key selection criteria include low-capacitance ESD clamping for 480 Mbps USB eye integrity, automotive-grade junction temperature range (–55 °C to +150 °C), and ISO 10605 compliance across multiple test configurations (150/330 pF, 330/2 kΩ).
Technical Context
The HSP181-2W3Y implements a dual-channel bidirectional TVS structure optimized for differential signaling paths, with matched clamping characteristics ensuring common-mode noise rejection. Its 0.7 Ω dynamic resistance (RD) and 29 V clamping voltage at 2 A (8/20 µs) enable robust transient suppression while preserving signal edge fidelity.
Designed for flow-through routing, the device maintains impedance continuity on high-speed lines - validated by USB 2.0 eye diagram testing with and without protection. The 18 V VRM supports short-to-battery fault tolerance in automotive environments and aligns with NFC antenna voltage limits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRM) | 18 V - Ensures no conduction during normal 18 V NFC antenna operation or automotive battery transients. |
| Junction Capacitance (CLINE) | 2.1 pF @ 1 MHz - Minimizes signal loading on USB 2.0 (480 Mbps) and NFC carrier frequencies. |
| Bandwidth (BW) | 1.7 GHz - Supports full USB 2.0 high-speed data rate with <3 dB insertion loss up to Nyquist frequency. |
| ESD Withstand (IEC 61000-4-2) | ±12 kV contact / ±30 kV air - Exceeds Level 4 immunity for industrial and automotive end-equipment. |
| Operating Junction Temp | –55 °C to +150 °C - Qualified per AEC-Q101 for under-hood and infotainment module deployment. |
| Clamping Voltage (VCL) | 29 V @ 2 A (8/20 µs) - Limits transient overvoltage to safe levels for downstream NFC/USB PHY ICs. |
Pinout & Package
The HSP181-2W3Y is housed in a SOT323-3L (JEDEC TO-236) surface-mount package with gull-wing leads, footprint-optimized for high-density PCB layouts and reflow-compatible with standard lead-free processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Channel 1 | Connects to first high-speed line (e.g., USB D+ or NFC ANT1); forms cathode-to-ground path during ESD event. |
| 2 | Cathode (Common Ground) | Shared ground reference for both channels; must be low-inductance connection to system GND plane. |
| 3 | Anode of Channel 2 | Connects to second high-speed line (e.g., USB D– or NFC ANT2); ensures matched clamping with Pin 1. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel flow-through layout | Enables symmetric PCB routing with minimal trace discontinuity - preserves differential impedance and reduces crosstalk. |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock per stress test requirements. |
| Ultra-low 2.1 pF capacitance | Prevents >1% rise-time degradation on 480 Mbps USB signals - verified via eye diagram comparison (DS13792 Fig 12–13). |
| Multi-config ISO 10605 compliance | Passes 150 pF/330 Ω, 330 pF/330 Ω, and 330 pF/2 kΩ test setups - covers diverse ESD threat models in vehicle and handheld systems. |
Applications
| USB 2.0 High-Speed Interface | NFC Reader Antenna Port |
|---|---|
Use Scenario: Protecting D+/D– lines in automotive infotainment USB host ports exposed to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Bidirectional ESD clamp placed immediately before USB PHY, maintaining signal integrity up to 480 Mbps. Use Value: Prevents PHY latch-up or damage from ±12 kV contact ESD while retaining USB eye opening >80% per compliance template. | Use Scenario: Safeguarding NFC antenna terminals in contactless payment readers subjected to user-hand ESD and board-level transients. IC Role / Device Role / Timing Role: Stand-off rated at 18 V to tolerate NFC antenna DC bias and RF envelope peaks without leakage. Use Value: Enables direct placement at antenna feed point with <2.5 pF parasitic load - avoids detuning and maintains coupling efficiency. |
| Automotive Body Control Module | Industrial Handheld Scanner |
Use Scenario: Protecting high-speed sensor or display interface lines routed through door modules or center consoles. IC Role / Device Role / Timing Role: Dual-line transient suppressor meeting ISO 7637-3 pulse 3a/3b and slow transient 2a requirements. Use Value: Survives –150 V fast transients and +85 V slow pulses without degradation - confirmed in DS13792 Figures 8–11. | Use Scenario: Shielding NFC/USB data lines in ruggedized warehouse scanners operating in dry, static-prone environments. IC Role / Device Role / Timing Role: RoHS-compliant, halogen-free ESD array qualified for extended thermal cycling (–55 °C to +150 °C). Use Value: Eliminates field failures due to ESD-induced resets or communication dropouts during frequent handling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-line high-speed ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD2EUSB30DRYR | 0.7 pF capacitance, 3.6 GHz bandwidth, but only 5.5 V VRM - unsuitable for 18 V NFC or automotive battery-tolerant designs. | Limited to USB 3.0/PCIe where lower voltage rails dominate; cannot replace HSP181-2W3Y in NFC or 12 V/24 V systems. | Select only when VRM ≤ 5.5 V and bandwidth >3 GHz is required; verify compatibility with 1.7 GHz minimum requirement. |
| ESD56081D05-2/TR | 2.5 pF capacitance, 1.2 GHz bandwidth, 5 V VRM, AEC-Q101 qualified - higher capacitance degrades USB 2.0 eye margin. | Targeted at low-voltage consumer USB ports; lacks 18 V stand-off and fails NFC antenna voltage alignment. | Acceptable only for non-automotive, sub-12 V applications where 2.5 pF loading is tolerable and ESD level 4 is sufficient. |
Compared with TPD2EUSB30DRYR and ESD56081D05-2/TR, the HSP181-2W3Y uniquely combines 18 V VRM, 2.1 pF capacitance, and AEC-Q101 qualification - making it the sole option for automotive NFC readers and 12 V/24 V USB host ports requiring simultaneous high-voltage tolerance and signal fidelity.
Availability
HSP181-2W3Y is available at Aetrix Electronics and suitable for automotive infotainment systems, NFC-enabled payment terminals, and industrial handheld scanners requiring stable component supply across extended temperature and ESD stress conditions.
Supply support for HSP181-2W3Y 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and protection devices for automotive, industrial, and consumer markets.
The HSP181-2W3Y belongs to ST's automotive-grade ESD protection portfolio, engineered specifically to meet stringent ISO 10605 and AEC-Q101 requirements for high-speed data lines in safety-critical and harsh-environment applications.
FAQ
What is the maximum continuous working voltage for HSP181-2W3Y?
The HSP181-2W3Y has a stand-off voltage (VRM) of 18 V, meaning it can continuously block up to 18 V DC or peak AC without triggering. This rating is validated per IEC 61000-4-2 and aligns with NFC antenna bias and automotive short-to-battery fault thresholds.
Can HSP181-2W3Y be used on single-ended lines?
No - the HSP181-2W3Y is configured as a dual-channel device with independent anodes (Pins 1 and 3) and a shared cathode (Pin 2), intended exclusively for differential or paired high-speed signals like USB D+/D– or NFC ANT1/ANT2. It is not rated for single-ended protection.
Does HSP181-2W3Y require external biasing or control signals?
No - the HSP181-2W3Y is a passive TVS-based ESD array with no control pins, supply rails, or enable functions. It operates automatically during overvoltage events and presents only 50 nA leakage at 18 V, eliminating design overhead for biasing or logic interfacing.
Is the SOT323-3L package compatible with standard reflow profiles?
Yes - the SOT323-3L package is lead-free and qualified for standard Pb-free reflow, with ST's recommended profile peaking at 240–245 °C for 60 seconds (max 90 s). The device withstands 260 °C for 10 s during soldering, per JEDEC J-STD-020.
HSP181-2W3Y Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- SC-70, SOT-323
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 18V (Max)
- Voltage - Breakdown (Min):
- 21.5V
- Voltage - Clamping (Max) @ Ipp:
- 29V
- Current - Peak Pulse (10/1000µs):
- 2A (8/20µs)
- Power - Peak Pulse:
- 50W
- Power Line Protection:
- No
- Applications:
- USB
- Capacitance @ Frequency:
- 2.1pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323-3
HSP181-2W3Y FAQ
1.How can I place an order for HSP181-2W3Y through Aetrix?
Please submit a Request for Quotation (RFQ) for HSP181-2W3Y 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 HSP181-2W3Y reliable?
The price and inventory of HSP181-2W3Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HSP181-2W3Y is usually 5 days.
3.What payment methods are accepted for HSP181-2W3Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HSP181-2W3Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HSP181-2W3Y?
HSP181-2W3Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HSP181-2W3Y 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 HSP181-2W3Y?
For technical support, including HSP181-2W3Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HSP181-2W3Y requirements.
6.How does Aetrix verify that HSP181-2W3Y is sourced from the original manufacturer or authorized distributors?
All HSP181-2W3Y 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 HSP181-2W3Y meets industry standards.
7.What is the process for return or replacement of HSP181-2W3Y?
All HSP181-2W3Y units undergo pre-shipment inspection (PSI). If there is an issue with HSP181-2W3Y, 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 HSP181-2W3Y part is unused and in its original packaging.
Return procedure for HSP181-2W3Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HSP181-2W3Y Tags
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