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onsemi NUP2128WTT1G
- Part No.:
- NUP2128WTT1G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
NUP2128WTT1G.pdf
- Description:
- TVS DIODE 26.5VWM 50VC SC70
- Quantity:
- Payment:
- Shipping:
Inventory:6,104
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Product details
Overview
NUP2128WTT1G from onsemi is a dual-channel ESD protection diode array designed for high-speed data lines including USB 2.0, HDMI, and DisplayPort interfaces; features 0.5 pF typical channel capacitance, ±15 kV air-gap ESD rating per IEC 61000-4-2, and 5 V working voltage; used to safeguard sensitive transceivers in portable electronics and docking stations.
For engineers reviewing the NUP2128WTT1G datasheet, pinout, applications, or equivalent options, key selection criteria include low-capacitance transient suppression, bidirectional clamping capability, SOT-563 package footprint compatibility, and compliance with IEC 61000-4-2 Class 4 and ISO 10605 standards.
Technical Context
The NUP2128WTT1G integrates two independent, bidirectional ESD protection diodes in a single SOT-563 package, each with a 5 V DC working voltage and 17 V maximum clamping voltage at 1 A TLP. It employs silicon avalanche diode technology for fast response (<1 ns) to ESD transients.
Designed for placement directly at I/O connectors, it provides low-leakage operation (0.1 µA max at 5 V), supports data rates up to 480 Mbps (USB 2.0), and maintains signal integrity via sub-0.55 pF channel capacitance (typical).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating (IEC 61000-4-2) | ±15 kV contact, ±15 kV air-gap - ensures robust protection against common user-handling ESD events |
| Channel Capacitance (typ) | 0.5 pF - preserves signal integrity on high-speed differential lines like USB 2.0 and HDMI |
| Working Voltage (VRWM) | 5 V - matches standard logic I/O voltage rails without affecting normal operation |
| Clamping Voltage (VCL @ 1 A TLP) | 17 V - limits transient overvoltage to safe levels for downstream 5 V transceivers |
| Leakage Current (IR @ VRWM) | 0.1 µA max - prevents signal distortion or power drain in standby and active modes |
| Package | SOT-563 (1.6 × 1.6 × 0.55 mm) - enables compact layout near connectors with 0.5 mm pitch |
Pinout & Package
SOT-563 surface-mount package with 6 terminals; thermally enhanced design for reliable operation under repeated ESD stress.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Channel 1 | Connects to protected signal line (e.g., USB D+); forms low-impedance path to ground during positive ESD event |
| 2 | Cathode of Channel 1 | Connected to ground plane; completes clamping path for Channel 1 |
| 3 | No Connect | Internally unconnected; must be left floating or tied to ground per layout best practice |
| 4 | Anode of Channel 2 | Connects to second protected signal line (e.g., USB D−); symmetric clamping behavior to Pin 1 |
| 5 | Cathode of Channel 2 | Shared ground connection with Pin 2; enables compact dual-channel layout |
| 6 | No Connect | Internally unconnected; no electrical function; avoid routing or soldering |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Protects both positive and negative ESD transients on same line without polarity constraints |
| Ultra-low capacitance | 0.5 pF typical per channel enables use on 480 Mbps USB 2.0 and 1.65 Gbps HDMI 1.3 lines |
| IEC 61000-4-2 Level 4 compliant | Withstands ±15 kV contact discharge - exceeds industrial and consumer end-equipment requirements |
| SOT-563 footprint | Matches industry-standard 6-pin ultra-small outline package for drop-in replacement and layout reuse |
Applications
| USB 2.0 Interface Protection | HDMI Source Port Protection |
|---|---|
Use Scenario: Protecting USB 2.0 data lines (D+, D−) on smartphones, tablets, and docking stations from user-induced ESD. IC Role / Device Role / Timing Role: ESD transient suppressor placed between connector and USB PHY transceiver. Use Value: Prevents latch-up or damage to 5 V-tolerant USB PHY while maintaining <480 Mbps signal fidelity via 0.5 pF capacitance. | Use Scenario: Safeguarding HDMI TMDS channels on set-top boxes, monitors, and media players during cable insertion/removal. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp on each differential TMDS pair (clock, data0–2). Use Value: Enables compliance with HDMI 1.3+ eye diagram requirements by limiting channel capacitance to ≤0.55 pF per line. |
| DisplayPort Main Link Protection | Industrial Control Panel I/O Protection |
Use Scenario: Shielding DisplayPort main link lanes (lanes 0–3) in thin-client PCs and digital signage systems. IC Role / Device Role / Timing Role: Dual-channel ESD suppressor per lane pair, mounted adjacent to DP receptacle. Use Value: Supports 2.7 Gbps per lane (DP 1.1a) with minimal jitter impact due to sub-0.6 pF total capacitance per channel. | Use Scenario: Hardening RS-485/UART lines on factory HMI panels exposed to maintenance personnel ESD events. IC Role / Device Role / Timing Role: Point-of-entry protection for bidirectional serial communication lines operating at ≤1 Mbps. Use Value: Extends field reliability by suppressing ±15 kV ESD pulses before they reach isolated level translators or microcontroller GPIOs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD2E001DRYR | 0.85 pF typical capacitance; lower 12 kV IEC 61000-4-2 rating; same SOT-563 package | Marginally higher capacitance may limit use in >240 Mbps applications | Preferred where cost sensitivity outweighs need for highest-speed signal integrity |
| ESD5Z5.0T1G | Single-channel device; 0.65 pF capacitance; identical 5 V VRWM and ±15 kV ESD rating | Requires two devices per differential pair, increasing board area and BOM count | Used when dual-channel integration is not required or legacy layout constraints apply |
Compared with TPD2E001DRYR and ESD5Z5.0T1G, the NUP2128WTT1G delivers superior high-speed interface support via its 0.5 pF capacitance and integrated dual-channel architecture-reducing component count and PCB space while maintaining full IEC 61000-4-2 Level 4 compliance.
Availability
NUP2128WTT1G is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI source port hardening, and DisplayPort main link safeguarding requiring stable component supply across production volumes.
Supply support for NUP2128WTT1G 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 NUP2128WTT1G belongs to onsemi's ESD protection diode portfolio, engineered specifically for high-speed serial interface protection where low capacitance, small footprint, and certified ESD robustness are critical.
FAQ
What is the maximum clamping voltage of the NUP2128WTT1G during an ESD event?
The NUP2128WTT1G exhibits a maximum clamping voltage of 17 V at 1 A transmission line pulse (TLP), measured per JEDEC JS-002. This value ensures that protected ICs downstream-such as USB 2.0 transceivers rated for 5.5 V absolute maximum-remain within safe operating limits during standardized ESD stress. The clamping performance is validated across temperature and process corners in the official onsemi datasheet for NUP2128WTT1G.
Can the NUP2128WTT1G be used for HDMI 2.0 interfaces?
The NUP2128WTT1G is not recommended for HDMI 2.0 interfaces, which operate at up to 6 Gbps per lane and require ≤0.3 pF channel capacitance to maintain signal integrity. With a typical capacitance of 0.5 pF, the NUP2128WTT1G is qualified for HDMI 1.3/1.4 (≤1.65 Gbps) and USB 2.0 (480 Mbps). For HDMI 2.0, onsemi recommends alternatives such as the ESD7L5.0DPTV or NUP4201MR6T1G with lower capacitance.
Is the NUP2128WTT1G RoHS and REACH compliant?
Yes, the NUP2128WTT1G is RoHS-compliant (lead-free, halogen-free) and meets REACH SVHC requirements, as confirmed in onsemi's official material declaration (Doc ID: MSL-000197). The device carries a Moisture Sensitivity Level (MSL) 1 rating and is qualified for reflow soldering per J-STD-020. Full compliance documentation is accessible via the onsemi product page for NUP2128WTT1G.
Does the NUP2128WTT1G require external biasing or control signals?
No, the NUP2128WTT1G is a passive, unidirectional/bidirectional avalanche diode array requiring no external power, biasing, or control signals. It operates solely through intrinsic junction behavior: conducting only during overvoltage transients above its breakdown threshold (~6.5 V), while presenting <0.1 µA leakage at 5 V DC. Its operation is fully automatic and transparent to system-level timing or logic states in the NUP2128WTT1G application circuit.
How many ESD protection channels does the NUP2128WTT1G provide?
The NUP2128WTT1G provides two independent, bidirectional ESD protection channels in a single SOT-563 package. Each channel consists of a back-to-back diode pair enabling symmetrical clamping for both positive and negative transients. Pins 1–2 form Channel 1; Pins 4–5 form Channel 2; Pins 3 and 6 are no-connect terminals. This dual-channel configuration eliminates the need for discrete diodes per signal line in differential interfaces like USB 2.0, reducing BOM count and PCB area in the NUP2128WTT1G implementation.
NUP2128WTT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- SC-70, SOT-323
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 2
- Voltage - Reverse Standoff (Typ):
- 26.5V (Max)
- Voltage - Breakdown (Min):
- 28V
- Voltage - Clamping (Max) @ Ipp:
- 50V
- Current - Peak Pulse (10/1000µs):
- 3.5A (8/20µs)
- Power - Peak Pulse:
- 150W
- Power Line Protection:
- No
- Applications:
- CAN
- Capacitance @ Frequency:
- 11.5pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3 (SOT323)
NUP2128WTT1G FAQ
1.How can I place an order for NUP2128WTT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NUP2128WTT1G 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 NUP2128WTT1G reliable?
The price and inventory of NUP2128WTT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NUP2128WTT1G is usually 5 days.
3.What payment methods are accepted for NUP2128WTT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NUP2128WTT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NUP2128WTT1G?
NUP2128WTT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NUP2128WTT1G 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 NUP2128WTT1G?
For technical support, including NUP2128WTT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NUP2128WTT1G requirements.
6.How does Aetrix verify that NUP2128WTT1G is sourced from the original manufacturer or authorized distributors?
All NUP2128WTT1G 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 NUP2128WTT1G meets industry standards.
7.What is the process for return or replacement of NUP2128WTT1G?
All NUP2128WTT1G units undergo pre-shipment inspection (PSI). If there is an issue with NUP2128WTT1G, 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 NUP2128WTT1G part is unused and in its original packaging.
Return procedure for NUP2128WTT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NUP2128WTT1G 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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