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onsemi ESD7321MUT5G
- Part No.:
- ESD7321MUT5G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
ESD7321MUT5G.pdf
- Description:
- TVS DIODE 7VWM 18VC 2X3DFN
- Quantity:
- Payment:
- Shipping:
Inventory:9,998
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Product details
Overview
ESD7321MUT5G from onsemi is a bi-directional ESD protection diode in X3DFN2 package, designed for high-speed data lines. It delivers 0.5 pF typical junction capacitance, ±15 kV IEC 61000−4−2 contact/air ESD rating, and 18 V clamping voltage at 8 A, enabling robust protection of USB 3.x and PCIe signal integrity.
For engineers reviewing the ESD7321MUT5G datasheet, pinout, applications, or equivalent options, key selection criteria include low-capacitance transient suppression, I/O-to-GND leakage under 200 nA at 7 V, and compatibility with 0.35 mm pitch DFN layouts.
Technical Context
This device implements a symmetric bi-directional TVS structure optimized for signal-line ESD immunity without signal distortion. Its 0.5 pF capacitance and 0.7 Ω dynamic resistance ensure minimal insertion loss on differential pairs operating up to 10 Gbps.
The ESD7321MUT5G operates across −55°C to +125°C junction temperature and clamps transients per IEC 61000−4−2 Level 4 (±15 kV contact), with breakdown voltage specified at 8.0 V (1 mA) and working reverse voltage at 7.0 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Capacitance | 0.5 pF max at 0 V, 1 MHz - preserves signal integrity on USB 3.x and PCIe Gen3+ lanes |
| Clamping Voltage | 18 V at 8 A (IEC61000−4−2 Level 2 equivalent) - limits downstream IC stress during ESD events |
| Working Voltage | 7.0 V peak reverse - supports 3.3 V and 5 V data bus operation with margin |
| ESD Rating | ±15 kV contact & air (IEC 61000−4−2 Level 4) - meets industrial and consumer immunity requirements |
| Leakage Current | 200 nA max at 7.0 V - avoids DC loading on high-impedance receivers |
| Breakdown Voltage | 8.0 V min at 1 mA - ensures reliable turn-on before system-level damage thresholds |
| Dynamic Resistance | 0.7 Ω - enables fast, low-voltage clamping response under TLP stress |
Pinout & Package
X3DFN2 package: 0.62 mm × 0.32 mm × 0.24 mm body, 0.35 mm pin pitch, case 152AF, Pb-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | I/O Terminal (Anode/Cathode) | Bi-directional ESD path - connects to protected data line (e.g., USB D+, D−) |
| 2 | GND | Low-inductance return path - must be connected to clean, low-impedance ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low capacitance | 0.5 pF max - prevents signal rise-time degradation on 5–10 Gbps serial links |
| IEC 61000−4−2 Level 4 compliance | ±15 kV contact/air - satisfies stringent end-equipment EMI certification requirements |
| Bi-directional clamping | Symmetric I/V curve - protects AC-coupled differential signals without polarity constraints |
| Small-footprint DFN | 0.62 × 0.32 mm - enables placement adjacent to connectors with minimal PCB area impact |
Applications
| USB 3.x Interface Protection | PCI Express Gen3 Lane Protection |
|---|---|
Use Scenario: Protecting SuperSpeed USB 3.0/3.1 transmitter/receiver pins against ESD during hot-plug events. IC Role / Device Role / Timing Role: Bi-directional transient voltage suppressor placed between connector and PHY, directly on differential pair. Use Value: 0.5 pF capacitance avoids eye diagram closure; 18 V clamping prevents PHY latch-up at ±15 kV contact discharge. | Use Scenario: Safeguarding PCIe Gen3 x1/x4 differential lanes from ESD in server backplanes and add-in cards. IC Role / Device Role / Timing Role: Point-of-entry ESD clamp mounted within 3 mm of edge connector, referenced to chassis ground. Use Value: 0.7 Ω dynamic resistance ensures sub-20 V clamping under 8 A TLP pulse, preserving link training stability. |
| SATA/SAS Data Line Protection | MHL 2.0 Mobile Display Interface |
Use Scenario: Shielding SATA III 6 Gbps host/device ports from handling-induced ESD in storage enclosures. IC Role / Device Role / Timing Role: Dual-channel ESD protector (one per differential lane) with shared ground terminal. Use Value: 7.0 V working voltage aligns with SATA common-mode range; 200 nA leakage avoids bias current errors in receiver termination. | Use Scenario: Securing MHL 2.0 video/audio differential pairs in smartphones and docking stations. IC Role / Device Role / Timing Role: Single-device protection for TMDS-style signaling with DC-balanced data streams. Use Value: Symmetric clamping maintains differential swing integrity; 0.32 mm width fits tight mobile PCB keepouts. |
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 capacitance, 12 V clamping at 4 A, SOT-553 package (1.6 × 1.6 mm) | Larger footprint; higher capacitance limits use to ≤3 Gbps interfaces | Prefer when board space allows larger package and lower clamping voltage is prioritized over speed |
| SP1002-01UTG | 0.35 pF capacitance, 12 V clamping at 5 A, 0201-size (0.6 × 0.3 mm) package | Smaller size but lower ESD rating (±12 kV contact) | Select for ultra-compact layouts where Level 4 immunity is not required |
Compared with ESD7321MUT5G, TPD2E001DRYR offers lower clamping but sacrifices bandwidth due to higher capacitance and larger footprint, while SP1002-01UTG achieves smaller size and lower capacitance but reduces ESD immunity by 3 kV - making ESD7321MUT5G optimal for balanced high-speed, high-immunity designs.
Availability
ESD7321MUT5G is available at Aetrix Electronics and suitable for USB 3.x interface protection, PCIe Gen3 lane hardening, and MHL 2.0 mobile display systems requiring stable component supply and consistent ESD performance across production batches.
Supply support for ESD7321MUT5G 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 power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, medical, and IoT applications.
The ESD7321MUT5G belongs to onsemi's low-capacitance ESD protection diode product line, engineered specifically for preserving signal fidelity on high-speed serial interfaces while meeting IEC 61000−4−2 Level 4 immunity requirements.
FAQ
What is the maximum clamping voltage of ESD7321MUT5G under IEC 61000−4−2 stress?
The ESD7321MUT5G clamps to 18 V at 8 A, corresponding to an IEC 61000−4−2 Level 2 equivalent test condition (±4 kV contact, ±8 kV air). This value is measured per the device's electrical characteristics table and confirmed in Figures 1 and 2 of the official datasheet. The 18 V clamping ensures downstream ICs remain below absolute maximum ratings during real-world ESD events. ESD7321MUT5G maintains this performance across its full operating temperature range.
Does ESD7321MUT5G support bi-directional signal lines like USB differential pairs?
Yes, ESD7321MUT5G is a symmetric bi-directional ESD protection diode, with identical I/V characteristics from Pin 1 to Pin 2 and Pin 2 to Pin 1. Its schematic shows no polarity marking, and breakdown voltage is tested both ways at 8.0 V minimum. This makes ESD7321MUT5G suitable for AC-coupled differential interfaces including USB 3.x, PCIe, and MHL without orientation constraints. ESD7321MUT5G requires no external biasing or direction selection.
What is the package type and dimensions of ESD7321MUT5G?
ESD7321MUT5G uses the X3DFN2 package (case 152AF), measuring 0.62 mm × 0.32 mm × 0.24 mm with 0.35 mm pin pitch. This ultra-compact two-terminal DFN is optimized for placement near high-speed connectors. The package is Pb-free, halogen-free/BFR-free, and RoHS compliant. ESD7321MUT5G's marking includes "XM" where "X" is the specific device code and "M" is the date code, rotated 90° clockwise per the datasheet marking diagram.
Can ESD7321MUT5G be used on 10 Gbps data lines such as USB 3.2 Gen2?
Yes, ESD7321MUT5G is validated for use on 10 Gbps interfaces including USB 3.2 Gen2. Its 0.5 pF typical junction capacitance minimizes signal attenuation and reflection, and its 0.7 Ω dynamic resistance ensures rapid clamping without overshoot. The device's low capacitance and symmetric structure preserve differential impedance and eye diagram integrity. ESD7321MUT5G has been characterized in application notes AND8308/D and is recommended by onsemi for USB 3.x and PCIe Gen3+ designs.
What is the leakage current specification for ESD7321MUT5G at its rated working voltage?
ESD7321MUT5G specifies a maximum reverse leakage current of 200 nA at VRWM = 7.0 V (I/O to GND), measured at TA = 25°C. This low leakage avoids loading high-impedance receivers in USB, PCIe, and MHL applications. The parameter is guaranteed across temperature and process variation, and appears in the Electrical Characteristics table on page 2 of the official datasheet. ESD7321MUT5G maintains this performance without derating up to +125°C junction temperature.
ESD7321MUT5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- 0201 (0603 Metric)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7V (Max)
- Voltage - Breakdown (Min):
- 8V
- Voltage - Clamping (Max) @ Ipp:
- 18V (Typ)
- Current - Peak Pulse (10/1000µs):
- 8A
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- USB
- Capacitance @ Frequency:
- 0.5pF @ 1MHz (Max)
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-X3DFN (0.6x0.3) (0201)
ESD7321MUT5G FAQ
1.How can I place an order for ESD7321MUT5G through Aetrix?
Please submit a Request for Quotation (RFQ) for ESD7321MUT5G 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 ESD7321MUT5G reliable?
The price and inventory of ESD7321MUT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESD7321MUT5G is usually 5 days.
3.What payment methods are accepted for ESD7321MUT5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESD7321MUT5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESD7321MUT5G?
ESD7321MUT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESD7321MUT5G 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 ESD7321MUT5G?
For technical support, including ESD7321MUT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESD7321MUT5G requirements.
6.How does Aetrix verify that ESD7321MUT5G is sourced from the original manufacturer or authorized distributors?
All ESD7321MUT5G 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 ESD7321MUT5G meets industry standards.
7.What is the process for return or replacement of ESD7321MUT5G?
All ESD7321MUT5G units undergo pre-shipment inspection (PSI). If there is an issue with ESD7321MUT5G, 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 ESD7321MUT5G part is unused and in its original packaging.
Return procedure for ESD7321MUT5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ESD7321MUT5G Tags
-
ESD9B5.0ST5G
onsemi
-
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
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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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