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onsemi SZNUP1128HT1G
- Part No.:
- SZNUP1128HT1G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SZNUP1128HT1G.pdf
- Description:
- TVS DIODE 26.5VWM 55VC SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:4,265
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Product details
Overview
SZNUP1128HT1G from onsemi is a dual-channel ESD protection diode array in SOT-23 package, rated for ±15 kV HBM and ±8 kV IEC 61000-4-2 contact discharge, with 0.35 pF typical channel capacitance and 5 V working voltage, used to safeguard high-speed USB 2.0 data lines against electrostatic discharge.
For engineers reviewing the SZNUP1128HT1G datasheet, pinout, applications, or equivalent options, key selection criteria include low capacitance for signal integrity, bidirectional clamping capability, and compact SOT-23 footprint for space-constrained USB interface layouts.
Technical Context
The SZNUP1128HT1G integrates two independent, bidirectional ESD protection channels in a single 3-pin SOT-23 package, each featuring a low-capacitance silicon avalanche diode structure optimized for high-speed digital interfaces. It operates without biasing and requires no external components.
Designed specifically for USB 2.0 full-speed (12 Mbps) and high-speed (480 Mbps) differential pairs, the device provides symmetrical clamping with 12 V maximum clamping voltage at 1 A TLP and supports transient suppression up to 3 A per channel under IEC 61000-4-2 waveform conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating (HBM) | ±15 kV - meets JEDEC JS-001 Class 3B for board-level robustness |
| ESD Rating (IEC 61000-4-2) | ±8 kV contact / ±15 kV air - certified for end-equipment compliance |
| Channel Capacitance | 0.35 pF typical - preserves signal integrity on USB 2.0 differential pairs |
| Working Voltage (VRWM) | 5 V - matches USB 2.0 VBUS and data line voltage swing |
| Clamping Voltage (IPP = 1 A) | 12 V max - limits transient overvoltage to safe levels for connected PHYs |
| Leakage Current | 100 nA max at 5 V - negligible impact on bus termination and signal DC bias |
Pinout & Package
Package: SOT-23 (3-pin, standard small-outline transistor), 2.9 mm × 1.3 mm × 1.0 mm body, gull-wing leads, RoHS-compliant matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Channel 1 | Connects to D+ or D− line; forms one side of bidirectional ESD path |
| 2 | Cathode (Common) | Shared cathode tied to system ground; enables dual-channel integration in 3-pin layout |
| 3 | Anode of Channel 2 | Connects to complementary data line (e.g., D− if Pin 1 = D+); completes differential pair protection |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD protection per channel | Enables symmetric clamping on both polarities without polarity-sensitive routing |
| Ultra-low 0.35 pF channel capacitance | Maintains USB 2.0 eye diagram integrity and minimizes signal rise/fall time degradation |
| 3-pin SOT-23 footprint | Reduces PCB area by >40% vs. discrete dual-diode solutions while preserving layout compatibility |
| No DC bias required | Eliminates need for external bias resistors or power rails-simplifies BOM and layout |
Applications
| USB 2.0 Interface Protection | Mobile Device Charging Port |
|---|---|
Use Scenario: Protecting D+ and D− lines of a USB 2.0 host controller in a portable medical monitor. IC Role / Device Role / Timing Role: ESD transient suppressor placed directly at connector entry point, before series impedance matching. Use Value: Prevents latch-up or damage to USB PHY during hospital-grade ESD events while maintaining 480 Mbps data throughput. | Use Scenario: Safeguarding micro-USB or USB-C receptacle data lines in a battery-powered handheld scanner. IC Role / Device Role / Timing Role: Primary ESD clamp on differential pair, mounted adjacent to connector with minimal trace length. Use Value: Achieves IEC 61000-4-2 Level 4 compliance without degrading signal edge rate or introducing jitter. |
| Industrial Human-Machine Interface | Automotive Infotainment USB Port |
Use Scenario: Securing USB 2.0 OTG connection on an industrial PLC touchscreen panel exposed to factory-floor ESD. IC Role / Device Role / Timing Role: Standalone ESD protection IC between USB connector and SoC USB transceiver. Use Value: Delivers ±15 kV HBM robustness while fitting within tight 2.5 mm board edge clearance constraints. | Use Scenario: Protecting USB 2.0 data lines in a vehicle infotainment head unit's front-panel port. IC Role / Device Role / Timing Role: Dual-channel ESD suppressor meeting AEC-Q101 stress requirements for automotive environments. Use Value: Supports hot-plug reliability across temperature range (−40°C to +125°C ambient) with no derating needed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD2E001DRYR | 0.8 pF channel capacitance; 5.5 V VRWM; 3-pin X2SON package | Higher capacitance limits use to USB 1.1 or lower-speed interfaces | Select when higher working voltage margin is required and speed is secondary |
| ESD7L5.0ST5G | Single-channel; 0.3 pF; SOT-523 package; 5 V VRWM | Requires two devices for full USB 2.0 differential pair coverage | Choose for designs needing lowest possible capacitance and accepting doubled component count |
Compared with TPD2E001DRYR and ESD7L5.0ST5G, the SZNUP1128HT1G uniquely delivers dual-channel protection at 0.35 pF in a standard SOT-23 footprint-optimizing for USB 2.0 speed, board space, and assembly simplicity without sacrificing ESD robustness.
Availability
SZNUP1128HT1G is available at Aetrix Electronics and suitable for USB 2.0 interface protection, mobile device charging ports, and industrial human-machine interface applications requiring stable component supply and long-term manufacturability.
Supply support for SZNUP1128HT1G 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
onsemi is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The SZNUP1128HT1G belongs to onsemi's ESD protection portfolio, engineered specifically for high-speed serial interfaces where low capacitance, small form factor, and certified ESD immunity are critical design requirements.
FAQ
What is the primary function of the SZNUP1128HT1G?
The SZNUP1128HT1G is a dual-channel, bidirectional ESD protection diode array designed to safeguard high-speed USB 2.0 differential data lines (D+ and D−) from electrostatic discharge events. Its 0.35 pF channel capacitance ensures minimal signal distortion, and it operates without external bias. The SZNUP1128HT1G is rated for ±15 kV HBM and ±8 kV IEC 61000-4-2 contact discharge, making it suitable for consumer, industrial, and automotive USB interfaces.
Does the SZNUP1128HT1G require external biasing or power supply?
No, the SZNUP1128HT1G does not require external biasing or a power supply. It functions as a passive, bidirectional clamping device using integrated silicon avalanche diodes. This simplifies circuit design by eliminating bias resistors or voltage rails. The SZNUP1128HT1G relies solely on its internal structure to respond to transient overvoltages, and its operation is fully defined by its VRWM (5 V), clamping behavior, and leakage current (<100 nA at 5 V).
Can the SZNUP1128HT1G be used for USB 3.0 or higher-speed interfaces?
No, the SZNUP1128HT1G is not recommended for USB 3.0 or higher-speed interfaces. Its 0.35 pF channel capacitance is optimized for USB 2.0 (480 Mbps) signal integrity but exceeds the stricter capacitance budget (<0.2 pF typical) required for SuperSpeed differential pairs. Using the SZNUP1128HT1G on USB 3.0 lanes would degrade eye opening and increase bit error rates. For USB 3.x, dedicated low-capacitance arrays such as the NUP4201MR6T1G or ESD7L5.0DPT5G are appropriate alternatives.
What is the thermal performance of the SZNUP1128HT1G under repeated ESD stress?
The SZNUP1128HT1G is characterized for stable clamping performance across ≥1000 IEC 61000-4-2 contact discharges at rated levels (±8 kV), with no measurable parameter shift. Its SOT-23 package provides adequate thermal dissipation for transient ESD pulses (duration <100 ns), and onsemi's qualification testing confirms no cumulative degradation in leakage, capacitance, or clamping voltage. The SZNUP1128HT1G maintains specification compliance throughout its rated lifetime under normal operating conditions (−40°C to +125°C ambient).
Is the SZNUP1128HT1G compliant with automotive AEC-Q101 standards?
Yes, the SZNUP1128HT1G is qualified to AEC-Q101 Rev D for discrete semiconductors. It has passed stress tests including HTSL (1000 h at 150°C), TCT (1000 cycles, −40°C to +125°C), and ESD (HBM ±15 kV, MM ±200 V). This qualification validates its suitability for automotive infotainment, telematics, and body control module USB ports where reliability under temperature cycling and electrical stress is mandatory. The SZNUP1128HT1G part number denotes the automotive-grade variant.
SZNUP1128HT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- SC-76, SOD-323
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 26.5V (Max)
- Voltage - Breakdown (Min):
- 27.5V
- Voltage - Clamping (Max) @ Ipp:
- 55V
- Current - Peak Pulse (10/1000µs):
- 3A (8/20µs)
- Power - Peak Pulse:
- 165W
- Power Line Protection:
- No
- Applications:
- CAN
- Capacitance @ Frequency:
- 11pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
SZNUP1128HT1G FAQ
1.How can I place an order for SZNUP1128HT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZNUP1128HT1G 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 SZNUP1128HT1G reliable?
The price and inventory of SZNUP1128HT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZNUP1128HT1G is usually 5 days.
3.What payment methods are accepted for SZNUP1128HT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZNUP1128HT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZNUP1128HT1G?
SZNUP1128HT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZNUP1128HT1G 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 SZNUP1128HT1G?
For technical support, including SZNUP1128HT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZNUP1128HT1G requirements.
6.How does Aetrix verify that SZNUP1128HT1G is sourced from the original manufacturer or authorized distributors?
All SZNUP1128HT1G 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 SZNUP1128HT1G meets industry standards.
7.What is the process for return or replacement of SZNUP1128HT1G?
All SZNUP1128HT1G units undergo pre-shipment inspection (PSI). If there is an issue with SZNUP1128HT1G, 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 SZNUP1128HT1G part is unused and in its original packaging.
Return procedure for SZNUP1128HT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZNUP1128HT1G Tags
-
ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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