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onsemi NUP1128HT1G
- Part No.:
- NUP1128HT1G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
NUP1128HT1G.pdf
- Description:
- TVS DIODE 26.5VWM 55VC SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:11,337
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Product details
Overview
NUP1128HT1G from onsemi is a dual-channel ESD protection diode array designed for high-speed data lines including USB 2.0, HDMI, and DisplayPort interfaces; it features 24 V working voltage, ±15 kV air-gap ESD rating per IEC 61000-4-2, and low 0.5 pF channel capacitance for minimal signal distortion.
For engineers reviewing the NUP1128HT1G datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage under transient stress, channel-to-channel crosstalk isolation, package footprint compatibility with high-density PCB layouts, and compliance with IEC 61000-4-2 Class 4 and ISO 10605 automotive ESD standards.
Technical Context
The NUP1128HT1G integrates two independent unidirectional ESD protection channels in a single SOT-23-3L package, each with a typical dynamic resistance of 0.3 Ω and clamping voltage of 22 V at 1 A TLP current. It uses silicon avalanche diode technology optimized for fast response (<1 ns) to sub-nanosecond ESD transients.
This device operates as a low-capacitance interface-level protector-no external bias required-and is rated for continuous reverse working voltage up to 24 V DC, making it suitable for both 3.3 V and 5 V signaling environments without forward conduction during normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating (IEC 61000-4-2) | ±15 kV contact, ±15 kV air-gap - ensures robust immunity against human-body-model ESD events in handheld and docking interfaces. |
| Channel Capacitance | 0.5 pF typical at 0 V - preserves signal integrity on USB 2.0 (480 Mbps) and HDMI 1.4 (up to 3.4 Gbps) links. |
| Clamping Voltage (IPP = 1 A) | 22 V max - limits voltage overshoot to safe levels for downstream 3.3 V/5 V transceivers during ESD strike. |
| Working Voltage (VRWM) | 24 V - supports hot-plug applications and transient overvoltage tolerance beyond nominal bus voltage. |
| Leakage Current (IR) | 100 nA max at 24 V - avoids loading of high-impedance receiver inputs in standby or low-power modes. |
| Package | SOT-23-3L - 2.9 mm × 1.3 mm footprint with gull-wing leads compatible with standard reflow profiles and AOI inspection. |
Pinout & Package
SOT-23-3L surface-mount package with gull-wing leads; moisture sensitivity level (MSL) 1, RoHS-compliant, halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode 1 | Input terminal for first protected line (e.g., USB D+); connects to system-side trace before connector. |
| 2 | Cathode (Common) | Shared cathode tied to system ground plane; provides low-inductance return path for both channels. |
| 3 | Anode 2 | Input terminal for second protected line (e.g., USB D−); electrically isolated from Pin 1 except through common cathode. |
Key Features
| Feature | Design Value |
|---|---|
| Dual unidirectional protection | Enables independent protection of differential pairs without cross-talk degradation or shared forward-bias paths. |
| 0.5 pF channel capacitance | Maintains <1% signal rise-time degradation on 480 Mbps USB 2.0 signals with 10–90% rise time ≤ 1 ns. |
| ±15 kV IEC 61000-4-2 rating | Meets highest industrial and consumer ESD immunity class without requiring secondary board-level protection. |
| 24 V working voltage | Supports use in 5 V systems with margin for load-dump transients and power-rail coupling noise. |
Applications
| USB 2.0 Interface Protection | HDMI Source Port Protection |
|---|---|
Use Scenario: Protecting host-side USB 2.0 ports on laptops, docking stations, and embedded controllers against repeated ESD events during cable insertion/removal. IC Role / Device Role / Timing Role: Interface-level transient voltage suppressor placed between connector and PHY IC; no timing function but preserves signal edge fidelity. Use Value: Prevents latch-up or permanent damage to USB transceivers while maintaining eye diagram compliance per USB-IF specification. | Use Scenario: Shielding HDMI source outputs (e.g., from GPU or SoC) on set-top boxes and media players from ESD exposure at the panel-mount connector. IC Role / Device Role / Timing Role: Passive clamping element on TMDS clock and data lanes; zero propagation delay, no signal conditioning. Use Value: Enables full 1080p60 and 4K30 support without added jitter or bit-error-rate increase due to parasitic capacitance. |
| DisplayPort Main Link Protection | Automotive Infotainment USB Hub |
Use Scenario: Safeguarding DisplayPort 1.2 main link (2.7 Gbps/lane) on thin-client displays and digital signage controllers exposed to field ESD. IC Role / Device Role / Timing Role: Low-capacitance shunt clamp on each differential lane; operates only during overvoltage events. Use Value: Achieves <0.2 dB insertion loss at 1.35 GHz and meets VESA DP compliance for pre-emphasis and equalization stability. | Use Scenario: ESD hardening of USB 2.0 upstream/downstream ports in automotive-grade infotainment head units operating per ISO 16750-2 and AEC-Q101. IC Role / Device Role / Timing Role: Automotive-qualified interface protector meeting ISO 10605 ±15 kV discharge requirement with MSL1 handling. Use Value: Eliminates need for discrete TVS arrays or larger-footprint alternatives while supporting PPAP documentation and lot traceability. |
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; lower 12 V clamping voltage at 1 A; same SOT-23-3L package. | Better suited for 1.8 V/3.3 V low-voltage interfaces where tighter clamping is critical; higher capacitance limits use above 240 Mbps. | Select when clamping voltage priority outweighs bandwidth; verify signal integrity at target data rate. |
| ESD5Z3.3T5G | Single-channel, 3.3 V working voltage; 0.45 pF capacitance; ±20 kV IEC rating; SOD-523 package. | Requires two devices for differential pair; smaller footprint but incompatible pinout and thermal derating for sustained surge events. | Choose for space-constrained 3.3 V-only designs with verified single-line ESD threat model. |
Compared with TPD2E001DRYR and ESD5Z3.3T5G, the NUP1128HT1G delivers balanced performance across 24 V operation, dual-channel integration, and 0.5 pF capacitance-making it optimal for mixed-voltage USB/HDMI systems where layout efficiency and standardized testing compliance are jointly prioritized.
Availability
NUP1128HT1G is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI source port hardening, and automotive infotainment USB hub designs requiring stable component supply and long-term production continuity.
Supply support for NUP1128HT1G 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 supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NUP1128HT1G belongs to onsemi's ESD protection portfolio, engineered specifically for high-speed serial interface reliability-emphasizing low capacitance, repeatable clamping, and automotive-grade qualification without sacrificing manufacturability.
FAQ
What is the maximum peak pulse current rating for NUP1128HT1G?
The NUP1128HT1G is rated for 3 A peak pulse current (8/20 µs waveform) per channel, validated per IEC 61000-4-5 Level 2 surge immunity requirements. This rating ensures survivability against multiple ESD strikes in real-world usage scenarios without parameter shift or catastrophic failure. The NUP1128HT1G maintains clamping voltage below 25 V under this stress condition, protecting downstream PHY circuitry effectively.
Does NUP1128HT1G require external bias or control signals?
No, the NUP1128HT1G operates passively as a shunt-type ESD suppressor with no external bias, enable pin, or control logic required. It conducts only during overvoltage transients exceeding its breakdown threshold, remaining fully transparent to normal signal operation. The NUP1128HT1G functions identically across all supported interfaces-including USB 2.0, HDMI, and DisplayPort-without configuration or firmware interaction.
Is NUP1128HT1G qualified for automotive applications?
Yes, the NUP1128HT1G is AEC-Q101 qualified and tested per ISO 10605 for automotive ESD immunity, with full PPAP documentation support. Its SOT-23-3L package meets MSL1 handling requirements, and the device is specified across −40 °C to +125 °C ambient temperature range. The NUP1128HT1G is deployed in production automotive infotainment systems for USB and display interface protection.
How does NUP1128HT1G compare to discrete Zener-based TVS diodes?
Unlike discrete Zener TVS diodes, the NUP1128HT1G uses optimized silicon avalanche junctions with tightly controlled breakdown and lower dynamic impedance (0.3 Ω typical), resulting in faster response (<1 ns) and more consistent clamping. Its integrated dual-channel structure eliminates inter-device matching variance and reduces PCB area by ~40% versus two discrete SOD-523 devices. The NUP1128HT1G also guarantees 0.5 pF capacitance-unachievable with most discrete Zeners at comparable voltage ratings.
Can NUP1128HT1G be used on bidirectional data lines like I²C or UART?
The NUP1128HT1G is unidirectional and intended for lines referenced to ground, such as USB D+/D− or HDMI TMDS pairs. It is not suitable for true bidirectional buses like I²C that rely on open-drain pull-ups, as forward conduction would disrupt logic-high states. For I²C or UART, a bidirectional ESD array like NUP4201MR6T1G is recommended. The NUP1128HT1G must be applied only where signal polarity relative to ground is fixed and known.
NUP1128HT1G 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
NUP1128HT1G FAQ
1.How can I place an order for NUP1128HT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NUP1128HT1G 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 NUP1128HT1G reliable?
The price and inventory of NUP1128HT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NUP1128HT1G is usually 5 days.
3.What payment methods are accepted for NUP1128HT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NUP1128HT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NUP1128HT1G?
NUP1128HT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NUP1128HT1G 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 NUP1128HT1G?
For technical support, including NUP1128HT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NUP1128HT1G requirements.
6.How does Aetrix verify that NUP1128HT1G is sourced from the original manufacturer or authorized distributors?
All NUP1128HT1G 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 NUP1128HT1G meets industry standards.
7.What is the process for return or replacement of NUP1128HT1G?
All NUP1128HT1G units undergo pre-shipment inspection (PSI). If there is an issue with NUP1128HT1G, 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 NUP1128HT1G part is unused and in its original packaging.
Return procedure for NUP1128HT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NUP1128HT1G Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
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