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onsemi ESD5Z2.5T1
- Part No.:
- ESD5Z2.5T1
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
ESD5Z2.5T1.pdf
- Description:
- TVS DIODE 2.5VWM 10.9VC SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:8,005
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Product details
Overview
ESD5Z2.5T1 from onsemi is a unidirectional ESD protection diode in SOD-523 package, featuring 2.5 V working peak reverse voltage (VRWM), 6.5 V clamping voltage at 5 A (VC), <1 ns response time, and IEC 61000-4-2 Level 4 (±30 kV contact) compliance - deployed for USB data line and low-voltage I/O port protection in smartphones and wearables.
For engineers reviewing the ESD5Z2.5T1 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage under 5 A surge, sub-1 ns transient response, 2.5 V stand-off rating for 3.3 V rail interfaces, and SOD-523 footprint compatibility with space-constrained portable PCBs.
Technical Context
This device operates as a unidirectional TVS diode, leveraging silicon avalanche breakdown to clamp transients before sensitive IC inputs. Its 2.5 V VRWM ensures compatibility with 3.3 V logic while maintaining margin against normal operating voltage excursions.
Clamping behavior is characterized per IEC 61000-4-2 waveform (8/20 µs pulse), with VC = 6.5 V @ IPP = 5 A and Ppk = 120 W. It achieves Class 3 HBM ESD rating (>16 kV) and supports full IEC 61000-4-4 Level 4 EFT immunity (40 A).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 2.5 V - Stand-off voltage ensuring no conduction during normal 3.3 V rail operation with safety margin. |
| VC @ IPP = 5 A | 6.5 V - Maximum voltage seen by protected circuit during 8/20 µs ESD pulse; limits stress on downstream ICs. |
| Response Time | <1 ns - Enables suppression before transient energy couples into signal path, critical for high-speed interfaces. |
| IEC 61000-4-2 Rating | ±30 kV contact - Meets Level 4 immunity without external filtering, simplifying front-end protection design. |
| Capacitance @ 0 V, 1 MHz | 145 pF - Low enough for USB 2.0 and SDIO lines without signal integrity degradation. |
| HBM ESD Rating | >16 kV - Complies with Class 3 human-body model, qualifying for consumer handheld end-equipment. |
| Package | SOD-523 (1.20 × 0.80 × 0.60 mm) - Enables placement directly at connector pins with minimal board area impact. |
Pinout & Package
SOD-523 surface-mount package with cathode marked by polarity band; 0.7 mm body height enables ultra-thin portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded) | Cathode | Connected to protected signal line; conducts during positive transients to ground when used in unidirectional configuration. |
| 2 | Anode | Connected to system ground; completes current path during ESD event, enabling low-impedance discharge. |
Key Features
| Feature | Design Value |
|---|---|
| Low Clamping Voltage | 6.5 V @ 5 A ensures protected ICs experience minimal overvoltage stress during worst-case ESD events. |
| Ultra-Small Footprint | 1.20 mm × 0.80 mm SOD-523 package allows placement at board edge connectors without routing detours. |
| High Surge Robustness | 120 W peak power dissipation supports repeated ESD strikes per IEC 61000-4-2 without degradation. |
| Pb-Free & RoHS Compliant | 100% matte tin lead finish meets global environmental regulations and reflow compatibility up to 260 °C. |
| AEC-Q101 Qualified (SZ variant) | SZESD5Z2.5T1G version satisfies automotive-grade reliability requirements for infotainment and ADAS interfaces. |
Applications
| USB 2.0 Data Lines | Smartphone Button Interfaces |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 ports against electrostatic discharge during cable insertion/removal. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between signal line and ground, activated only during positive transients. Use Value: 145 pF capacitance avoids signal rise-time degradation; 6.5 V clamping prevents damage to USB PHY transceivers rated for ≤6.8 V absolute max. | Use Scenario: Shielding mechanical button inputs (e.g., volume/power keys) from user-induced ESD in compact handsets. IC Role / Device Role / Timing Role: Standby-mode protection element tied between GPIO input and ground, conducting only during ESD events. Use Value: 2.5 V VRWM matches typical microcontroller input threshold; <1 ns response blocks transients before internal ESD structures activate. |
| SD Card Interface Lines | Wearable Sensor I/O Ports |
Use Scenario: Safeguarding CMD, CLK, and DAT lines of embedded SD card slots in tablets and portable medical devices. IC Role / Device Role / Timing Role: Point-of-entry transient suppressor mounted adjacent to SD card connector, shunting surge current to ground. Use Value: 120 W peak power rating handles multiple IEC 61000-4-2 strikes; SOD-523 size fits tight spacing around card edge. | Use Scenario: Protecting analog and digital I/O of motion sensors (e.g., accelerometers, gyroscopes) in fitness trackers and hearables. IC Role / Device Role / Timing Role: Low-leakage (6.0 µA @ 2.5 V) unidirectional diode preserving sensor bias accuracy during normal operation. Use Value: 6.5 V clamping protects 3.3 V supply-referenced sensor outputs; RoHS-compliant finish supports skin-contact device certifications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD5Z3.3T1G | Higher VRWM (3.3 V); higher clamping voltage (8.4 V @ 5 A); lower leakage (0.05 µA) | Better suited for 5 V tolerant I/O or mixed-voltage domains where 2.5 V stand-off is insufficient | Select when protecting 3.3 V systems with tighter noise margins or requiring lower leakage than ESD5Z2.5T1 |
| TPD2E001DRYR | Bi-directional; 15 pF capacitance; 12 V clamping @ 1 A; 0402 package | Lower capacitance ideal for high-speed differential pairs; bi-directional operation required for AC-coupled lines | Choose for HDMI or MIPI interfaces where sub-20 pF loading is mandatory and bidirectional clamping is needed |
Compared with ESD5Z2.5T1, ESD5Z3.3T1G offers higher stand-off for 3.3 V rails but increases clamping voltage, while TPD2E001DRYR provides bi-directionality and lower capacitance at the cost of reduced surge robustness and different package geometry - trade-offs require layout and signal integrity validation.
Availability
ESD5Z2.5T1 is available at Aetrix Electronics and suitable for smartphone USB ports, wearable sensor nodes, and portable medical device I/O requiring stable component supply across high-mix, low-volume production runs.
Supply support for ESD5Z2.5T1 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 (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, and consumer markets.
The ESD5Z Series is engineered specifically for board-level ESD protection in space-constrained portable electronics, balancing low clamping voltage, minimal capacitance, and robust IEC-level immunity in micro-packages.
FAQ
What is the maximum clamping voltage of ESD5Z2.5T1 under IEC 61000-4-2 conditions?
The ESD5Z2.5T1 exhibits a maximum clamping voltage of 6.5 V when subjected to a 5 A peak pulse current (IPP), per the 8/20 µs waveform defined in IEC 61000-4-2. This value is measured across the device terminals during standardized ESD testing and ensures downstream ICs see limited overvoltage stress. The ESD5Z2.5T1 datasheet confirms this parameter under "Electrical Characteristics" with test conditions explicitly stated.
Is ESD5Z2.5T1 suitable for protecting 3.3 V logic interfaces?
Yes, ESD5Z2.5T1 is designed for 3.3 V logic protection: its 2.5 V working peak reverse voltage (VRWM) provides adequate margin below the 3.3 V rail while avoiding false triggering during normal operation. The 6.5 V clamping voltage ensures protected circuits remain within safe operating limits during ESD events. This makes ESD5Z2.5T1 appropriate for GPIO, USB D+/D−, and SD card lines in 3.3 V systems.
Does ESD5Z2.5T1 have AEC-Q101 qualification?
The SZESD5Z2.5T1G variant - not the base ESD5Z2.5T1 - is AEC-Q101 qualified and PPAP capable for automotive applications. The standard ESD5Z2.5T1G is intended for commercial and industrial use. Both share identical electrical specs and SOD-523 packaging, but only the SZ-prefix version undergoes automotive-grade stress testing and process control per AEC-Q101 requirements.
What is the leakage current specification for ESD5Z2.5T1 at its rated VRWM?
ESD5Z2.5T1 specifies a maximum reverse leakage current (IR) of 6.0 µA at its working peak reverse voltage of 2.5 V and ambient temperature of 25 °C. This low leakage preserves signal integrity and battery life in always-on portable applications. The value is confirmed in the "Electrical Characteristics" table on page 3 of the official onsemi datasheet ESD5Z2.5T1/D.
Can ESD5Z2.5T1 be used in bidirectional signal paths like audio or RF lines?
No - ESD5Z2.5T1 is a unidirectional diode and must be used with correct polarity: cathode to signal line, anode to ground. It does not protect against negative transients on the signal line unless paired with a second diode. For bidirectional protection (e.g., audio jacks or RF antenna feeds), a dedicated bi-directional ESD suppressor such as ESD5Z5.0T1G or TPD2E001DRYR is required instead of ESD5Z2.5T1.
ESD5Z2.5T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- SC-79, SOD-523
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 2.5V (Max)
- Voltage - Breakdown (Min):
- 4V
- Voltage - Clamping (Max) @ Ipp:
- 10.9V
- Current - Peak Pulse (10/1000µs):
- 11A (8/20µs)
- Power - Peak Pulse:
- 120W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 145pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
ESD5Z2.5T1 FAQ
1.How can I place an order for ESD5Z2.5T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ESD5Z2.5T1 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 ESD5Z2.5T1 reliable?
The price and inventory of ESD5Z2.5T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESD5Z2.5T1 is usually 5 days.
3.What payment methods are accepted for ESD5Z2.5T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESD5Z2.5T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESD5Z2.5T1?
ESD5Z2.5T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESD5Z2.5T1 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 ESD5Z2.5T1?
For technical support, including ESD5Z2.5T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESD5Z2.5T1 requirements.
6.How does Aetrix verify that ESD5Z2.5T1 is sourced from the original manufacturer or authorized distributors?
All ESD5Z2.5T1 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 ESD5Z2.5T1 meets industry standards.
7.What is the process for return or replacement of ESD5Z2.5T1?
All ESD5Z2.5T1 units undergo pre-shipment inspection (PSI). If there is an issue with ESD5Z2.5T1, 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 ESD5Z2.5T1 part is unused and in its original packaging.
Return procedure for ESD5Z2.5T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ESD5Z2.5T1 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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