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onsemi ESD5Z12T1G
- Part No.:
- ESD5Z12T1G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
ESD5Z12T1G.pdf
- Description:
- TVS DIODE 12VWM 25VC SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:49,147
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Product details
Overview
ESD5Z12T1G from onsemi is a unidirectional ESD protection diode in SOD-523 package, featuring 12 V working peak reverse voltage (VRWM), 17 V breakdown voltage (VBR), 25 V clamping voltage (VC) at 5 A, 240 W peak power dissipation, and 55 pF capacitance. It delivers IEC 61000-4-2 Level 4 (±30 kV contact/air) and HBM Class 3 (>16 kV) protection for high-speed data lines in space-constrained portable electronics.
For engineers reviewing the ESD5Z12T1G datasheet, pinout, applications, or equivalent options, key selection criteria include clamping performance under 8/20 µs surge, low capacitance for USB 2.0/MIPI D-PHY signal integrity, and compatibility with automated SMT assembly at 260 °C reflow.
Technical Context
This unidirectional TVS diode operates with cathode-anode polarity and clamps transient overvoltages above 12 V while maintaining sub-100 nA leakage at VRWM. Its fast <1 ns response time and low 55 pF junction capacitance enable protection of high-frequency interfaces without signal degradation.
The device uses silicon planar construction in a void-free thermosetting plastic package (UL 94 V-0), qualified to MSL 1 and rated for −55 °C to +150 °C junction temperature. It meets AEC-Q101 requirements when ordered as SZESD5Z12T1G/T5G variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 12 V - Maximum continuous reverse operating voltage before conduction begins; sets minimum system rail margin for protected line. |
| VBR @ IT=1 mA | 14.1 V min - Breakdown initiates reliably above 14.1 V, ensuring no false triggering during normal operation. |
| VC @ IPP=5 A | 25 V max - Clamps 8/20 µs surges to ≤25 V, limiting stress on downstream ICs such as USB transceivers. |
| Ppk | 240 W - Withstands 8/20 µs transients up to 240 W, exceeding IEC 61000-4-2 Level 4 surge energy. |
| C @ VR=0 V, f=1 MHz | 55 pF - Low capacitance preserves signal integrity on 480 Mbps USB 2.0 or 1.5 Gbps MIPI D-PHY buses. |
| IR @ VRWM | 10 nA max - Negligible leakage prevents battery drain in always-on portable device rails. |
| ESD Rating | ±30 kV contact per IEC 61000-4-2 - Full Level 4 immunity without external shielding or layout reinforcement. |
Pinout & Package
ESD5Z12T1G is housed in an ultra-compact SOD-523 (Case 502) surface-mount package measuring 1.20 mm × 0.80 mm × 0.60 mm, with matte tin lead finish and MSL 1 rating for lead-free reflow up to 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Protected Line Input / Anode of internal PN junction | Connected to signal line requiring ESD protection; reverse-biased during normal operation. |
| 2 (Anode) | Ground Reference / Cathode of internal PN junction | Tied directly to system ground plane to provide low-inductance return path for transient current. |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 Level 4 Compliance | Guarantees ±30 kV contact/air ESD immunity without system-level redesign or additional filtering. |
| Low 55 pF Capacitance | Enables use on high-speed differential pairs (e.g., USB 2.0, HDMI, MIPI) without measurable rise-time degradation. |
| 12 V Stand-off Voltage | Supports protection of 3.3 V, 5 V, and 12 V logic rails while avoiding premature conduction during normal operation. |
| 260 °C Reflow Compatible | Validated for standard Pb-free SMT processes without delamination or parametric shift. |
| −55 °C to +150 °C Operating Range | Suitable for automotive cabin modules, industrial handhelds, and outdoor IoT edge nodes with wide thermal cycling. |
Applications
| USB 2.0 Data Lines | MIPI D-PHY Interfaces |
|---|---|
Use Scenario: Protecting D+ and D− pins of USB 2.0 transceivers in smartphones and tablets against repeated ESD events during cable insertion. IC Role / Device Role: Unidirectional clamping diode placed between signal line and ground, absorbing ESD energy before it reaches the PHY IC. Use Value: 55 pF capacitance avoids signal distortion at 480 Mbps; 25 V clamping ensures downstream PHY remains below absolute maximum ratings. | Use Scenario: Safeguarding camera sensor interface lines in compact digital cameras and automotive ADAS modules. IC Role / Device Role: High-speed ESD suppressor on MIPI D-PHY clock and data lanes, mounted adjacent to connector or sensor IC. Use Value: Sub-1 ns response captures ESD transients before propagation; 12 V VRWM aligns with typical MIPI supply rails. |
| Industrial HMI Touch Panels | Portable Medical Sensors |
Use Scenario: Shielding capacitive touch controller inputs from user-induced ESD in factory-floor HMIs exposed to dry environments. IC Role / Device Role: Point-of-entry protection on I²C or SPI bus lines connecting touch controller to MCU. Use Value: 240 W peak power handles multiple ESD strikes; low leakage (<10 nA) prevents drift in analog sensing paths. | Use Scenario: Protecting analog front-end inputs of wearable ECG or SpO₂ sensors from patient-handling ESD. IC Role / Device Role: Low-capacitance transient suppressor on biopotential amplifier inputs referenced to isolated ground. Use Value: 12 V VRWM accommodates medical-grade 5 V or 3.3 V analog rails; RoHS/Pb-free compliance supports regulatory submissions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD5Z12T5G | Same electrical specs and package; differs only in tape-and-reel quantity (8000 vs. 3000 units). | No functional difference; selected for higher-volume SMT line efficiency. | Direct form-fit-function replacement; identical marking (ZM) and reflow profile. |
| TPD2E001DRYR | Bidirectional, 15 pF capacitance, 12 V VRWM, but lower 120 W Ppk and 18 V VC @ 5 A. | Better for ultra-high-speed lines (e.g., USB 3.0 Gen 1), less robust for severe industrial ESD exposure. | Choose when lower capacitance is critical and surge energy is limited to IEC Level 3. |
Compared with ESD5Z12T1G, ESD5Z12T5G offers identical protection performance in larger reels for production scale, while TPD2E001DRYR trades clamping robustness for reduced capacitance-making ESD5Z12T1G preferable where IEC Level 4 immunity and 240 W surge handling are mandatory.
Availability
ESD5Z12T1G is available at Aetrix Electronics and suitable for USB 2.0 interface protection, MIPI D-PHY safeguarding, and industrial HMI ESD hardening requiring stable component supply across design-in, prototyping, and volume manufacturing phases.
Supply support for ESD5Z12T1G 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 focused on energy-efficient technologies for automotive, industrial, cloud, and intelligent edge applications.
The ESD5Z Series was engineered specifically for board-level ESD suppression in ultra-thin portable electronics, balancing low capacitance, high surge capability, and minimal footprint for next-generation mobile and wearable platforms.
FAQ
What is the maximum clamping voltage of ESD5Z12T1G under IEC 61000-4-2 surge conditions?
The ESD5Z12T1G exhibits a maximum clamping voltage (VC) of 25 V at 5 A peak pulse current (IPP), measured using the 8/20 µs waveform per IEC 61000-4-2. This value is confirmed in the Electrical Characteristics table on page 3 of the official onsemi datasheet (Rev. 16, February 2024). The actual clamping voltage seen by protected circuitry depends on PCB layout inductance, but ESD5Z12T1G maintains consistent performance across its rated surge range.
Is ESD5Z12T1G suitable for protecting USB 2.0 high-speed differential signals?
Yes, ESD5Z12T1G is well-suited for USB 2.0 protection due to its 55 pF capacitance, which introduces negligible signal distortion at 480 Mbps. Its unidirectional configuration matches the DC bias of USB data lines, and its 25 V clamping voltage ensures the protected PHY stays within safe operating limits. Layout best practices-such as symmetric placement and minimized trace length-must be followed to preserve ESD5Z12T1G's full effectiveness.
Does ESD5Z12T1G meet automotive qualification standards?
The base ESD5Z12T1G is not AEC-Q101 qualified; however, the SZESD5Z12T1G variant-identical in all electrical and mechanical specifications-is explicitly qualified to AEC-Q101 and PPAP capable. For automotive applications requiring formal qualification, engineers must specify the SZ-prefix version. ESD5Z12T1G remains appropriate for non-automotive industrial and consumer designs requiring robust ESD immunity.
What is the polarity configuration of ESD5Z12T1G and how is it marked on the device?
ESD5Z12T1G is a unidirectional diode with cathode (pin 1) and anode (pin 2). It is marked with a polarity band on the cathode end and the code "ZM" per the marking diagram in the datasheet. The "ZM" identifier appears adjacent to the cathode band on the top surface of the SOD-523 package, confirming the exact ESD5Z12T1G variant and distinguishing it from other voltages in the series.
Can ESD5Z12T1G be used in place of ESD5Z5.0T1G for higher-voltage rail protection?
No-ESD5Z12T1G is not a drop-in replacement for ESD5Z5.0T1G because its 12 V VRWM is incompatible with 5 V systems: it would fail to clamp transients below 14.1 V (VBR min), leaving the protected IC vulnerable. Selecting ESD5Z12T1G for a 5 V rail risks undervoltage protection failure. Always match VRWM to the protected line's nominal voltage plus margin; ESD5Z5.0T1G (5 V VRWM) remains correct for 5 V applications, while ESD5Z12T1G serves 12 V rails or higher.
ESD5Z12T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- SC-79, SOD-523
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 12V (Max)
- Voltage - Breakdown (Min):
- 14.1V
- Voltage - Clamping (Max) @ Ipp:
- 25V
- Current - Peak Pulse (10/1000µs):
- 9.6A (8/20µs)
- Power - Peak Pulse:
- 240W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 55pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
ESD5Z12T1G FAQ
1.How can I place an order for ESD5Z12T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for ESD5Z12T1G 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 ESD5Z12T1G reliable?
The price and inventory of ESD5Z12T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESD5Z12T1G is usually 5 days.
3.What payment methods are accepted for ESD5Z12T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESD5Z12T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESD5Z12T1G?
ESD5Z12T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESD5Z12T1G 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 ESD5Z12T1G?
For technical support, including ESD5Z12T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESD5Z12T1G requirements.
6.How does Aetrix verify that ESD5Z12T1G is sourced from the original manufacturer or authorized distributors?
All ESD5Z12T1G 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 ESD5Z12T1G meets industry standards.
7.What is the process for return or replacement of ESD5Z12T1G?
All ESD5Z12T1G units undergo pre-shipment inspection (PSI). If there is an issue with ESD5Z12T1G, 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 ESD5Z12T1G part is unused and in its original packaging.
Return procedure for ESD5Z12T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ESD5Z12T1G Tags
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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
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D12V0L1B2LP-7B
Diodes Incorporated
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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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