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STMicroelectronics HSP051-2W3Y
- Part No.:
- HSP051-2W3Y
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
HSP051-2W3Y.pdf
- Description:
- TVS DIODE 18VC SOT323-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,684
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Product details
Overview
HSP051-2W3Y from STMicroelectronics is a dual-line automotive-grade ESD protection array for high-speed differential interfaces, featuring 0.7 pF typical junction capacitance, 5.3 V breakdown voltage (VBR), and ±12 kV contact/±15 kV air ISO 10605 ESD immunity. It maintains signal integrity on APIX, LVDS, USB 3.0, and Ethernet lines via flow-through routing and 3 GHz bandwidth.
For engineers reviewing the HSP051-2W3Y datasheet, HSP051-2W3Y pinout, HSP051-2W3Y application, or HSP051-2W3Y equivalent, key selection criteria include ultra-low capacitance variation (<0.03 fC), clamping voltage of 18 V at +8 kV contact discharge, AEC-Q101 qualification, and SOT323-3L package compatibility with high-density PCB layouts.
Technical Context
The HSP051-2W3Y implements a dual-channel unidirectional TVS structure optimized for differential signaling paths, with independent I/O-to-GND protection per line and no internal coupling between channels. Its low-leakage design (100 nA @ 3 V) and stable capacitance across reverse bias (0.7–1.0 pF) minimize skew and insertion loss in >1 Gbps serial links.
It meets stringent automotive transient immunity requirements: ±8 kV/±12 kV per ISO 10605 (C = 330 pF), ±12 kV/±15 kV (C = 150 pF), and supports continuous operation from –40 °C to +150 °C junction temperature - critical for under-hood and ADAS domain controller deployments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR | 5.3 V min @ 1 mA - ensures reliable turn-on before IC I/O damage threshold in automotive transceivers |
| CI/O–GND | 0.7 pF typ - preserves signal rise time and eye diagram integrity on USB 3.0/LVDS buses |
| VCL | 18 V @ +8 kV contact discharge - limits transient overvoltage to safe levels for 3.3 V interface receivers |
| Bandwidth | 3 GHz - supports full-frequency response up to PCIe Gen3 and 1000BASE-T1 without attenuation |
| Tj range | –40 °C to +150 °C - enables placement near power converters or radar MMICs in automotive ECUs |
| ESD rating | ±12 kV contact / ±15 kV air (ISO 10605, C = 150 pF) - exceeds automotive OEM Level 4 requirements |
Pinout & Package
SOT323-3L (JEDEC TO-236) package: 3-terminal surface-mount device with gull-wing leads, 0.65 mm pitch, 2.0 mm × 1.25 mm footprint, and 1.1 mm height. RoHS-compliant, lead-free, UL 94 V0 epoxy.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | I/O Line 1 Anode | Input path for first high-speed differential pair (e.g., LVDS+) |
| 2 | GND | Common reference for both ESD clamps; must connect to low-impedance chassis ground |
| 3 | I/O Line 2 Anode | Input path for second high-speed differential pair (e.g., LVDS–) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, mechanical shock, and humidity testing |
| Flow-through routing | Minimizes trace discontinuity and impedance mismatch on differential pairs routed through the device |
| Ultra-low ∆C vs. bias | 0.03 fC variation - prevents duty-cycle distortion in asymmetric high-speed data streams |
| Extended Tj range | –40 °C to +150 °C - eliminates derating in engine bay or ADAS sensor modules |
Applications
| APIX Interface Protection | LVDS Video Link Protection |
|---|---|
Use Scenario: Protecting camera sensor output lines in automotive surround-view systems using APIX2/3 protocols. IC Role / Device Role / Timing Role: Dual-line ESD clamp placed directly at connector entry point before serializer IC. Use Value: Prevents latch-up in serializer inputs during assembly ESD events while maintaining <10 ps skew between differential lanes. | Use Scenario: Shielding infotainment display video links against ESD in dashboard head units. IC Role / Device Role / Timing Role: I/O-to-GND transient suppressor on LVDS clock/data pairs running at 1.2 Gbps. Use Value: Enables compliance with CISPR 25 Class 5 radiated emissions by eliminating post-ESD signal ringing. |
| USB 3.0 SuperSpeed Protection | Ethernet BroadR-Reach Protection |
Use Scenario: Safeguarding USB 3.0 host ports in telematics control units exposed to frequent cable hot-plug events. IC Role / Device Role / Timing Role: Bidirectional ESD suppression on SSTX+/SSTX– and SSRX+/SSRX– lanes. Use Value: Maintains 5 Gbps eye margin (≥30% vertical opening) after ±15 kV air discharge per IEC 61000-4-2. | Use Scenario: Securing 100BASE-T1 automotive Ethernet PHY connections in zonal gateways. IC Role / Device Role / Timing Role: Low-capacitance transient protector on differential MDI pins before magnetics. Use Value: Ensures <0.5 dB insertion loss at 66 MHz and passes ISO 10605 Level 4 without signal degradation. |
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 |
|---|---|---|---|
| TPD2E001DRYR | 0.8 pF typ capacitance; 5.5 V VBR; rated to +125 °C only | Limited to cabin electronics; not AEC-Q101 qualified | Use where cost sensitivity outweighs under-hood thermal requirements |
| ESD56081D05 | 0.5 pF typ; 5.0 V VBR; 12 kV contact rating only | Lower ESD robustness; no ISO 10605 C = 150 pF validation | Select when tighter capacitance tolerance is required but automotive qualification is optional |
Compared with TPD2E001DRYR and ESD56081D05, the HSP051-2W3Y uniquely delivers AEC-Q101 qualification, 150 °C operation, and full ISO 10605 C = 150 pF validation - making it the only option qualified for front-radar and ADAS domain controller deployment.
Availability
HSP051-2W3Y is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera links, and zonal gateway Ethernet interfaces requiring stable component supply across extended temperature and long production lifecycles.
Supply support for HSP051-2W3Y 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, designing and manufacturing microcontrollers, power ICs, sensors, and analog/mixed-signal devices for automotive, industrial, and consumer markets.
The HSP051 series belongs to ST's automotive-qualified ESD protection portfolio, engineered specifically for high-bandwidth differential bus protection in safety-critical vehicle subsystems.
FAQ
What is the maximum peak pulse current the HSP051-2W3Y can handle?
The HSP051-2W3Y supports 1.8 A peak pulse current (IPP) under 8/20 µs waveform conditions, measured per IEC 61000-4-5. This rating applies to each channel independently and is validated at Tj = 25 °C with proper PCB thermal relief. Derating is required above 85 °C ambient.
Does the HSP051-2W3Y require external biasing or control signals?
No. The HSP051-2W3Y is a passive, unidirectional TVS array with no enable pin, control logic, or bias requirement. It operates solely on voltage-dependent avalanche conduction and requires only direct connection between I/O lines and GND - no additional components or configuration needed.
Can HSP051-2W3Y be used on bidirectional data lines like USB D+/D–?
Yes - its unidirectional architecture protects against negative transients on I/O lines referenced to GND, making it suitable for USB 2.0/3.0 differential pairs when placed with correct polarity (anode to signal, cathode to GND). For true bidirectional protection, two devices per lane or a dedicated bidirectional array would be required.
How does the 0.7 pF capacitance impact 5 Gbps USB 3.0 signal integrity?
At 0.7 pF typical, the HSP051-2W3Y introduces <0.1 dB insertion loss at 2.5 GHz and maintains >30% eye height at 5 Gbps with standard FR-4 PCBs. Measured S21 shows –3 dB point at 3 GHz, confirming minimal high-frequency roll-off and negligible jitter accumulation in SuperSpeed eye diagrams.
HSP051-2W3Y 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):
- -
- Voltage - Breakdown (Min):
- 5.3V
- Voltage - Clamping (Max) @ Ipp:
- 18V (Typ)
- Current - Peak Pulse (10/1000µs):
- 1.8A (8/20µs)
- Power - Peak Pulse:
- 20W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 0.7pF @ 1MHz
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323-3
HSP051-2W3Y FAQ
1.How can I place an order for HSP051-2W3Y through Aetrix?
Please submit a Request for Quotation (RFQ) for HSP051-2W3Y 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 HSP051-2W3Y reliable?
The price and inventory of HSP051-2W3Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HSP051-2W3Y is usually 5 days.
3.What payment methods are accepted for HSP051-2W3Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HSP051-2W3Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HSP051-2W3Y?
HSP051-2W3Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HSP051-2W3Y 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 HSP051-2W3Y?
For technical support, including HSP051-2W3Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HSP051-2W3Y requirements.
6.How does Aetrix verify that HSP051-2W3Y is sourced from the original manufacturer or authorized distributors?
All HSP051-2W3Y 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 HSP051-2W3Y meets industry standards.
7.What is the process for return or replacement of HSP051-2W3Y?
All HSP051-2W3Y units undergo pre-shipment inspection (PSI). If there is an issue with HSP051-2W3Y, 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 HSP051-2W3Y part is unused and in its original packaging.
Return procedure for HSP051-2W3Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HSP051-2W3Y Tags
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