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onsemi SZESD5B5.0ST1G
- Part No.:
- SZESD5B5.0ST1G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
SZESD5B5.0ST1G.pdf
- Description:
- TVS DIODE 5VWM SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:3,414
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Product details
Overview
SZESD5B5.0ST1G from onsemi is a bi-directional ESD protection diode designed for audio line and high-speed data interface protection in portable electronics. It features a 5.0 V reverse working voltage, 32 pF capacitance, <1 ns response time, 7.8 V max clamping voltage at 1 A IPP, and IEC 61000-4-2 Level 4 (±30 kV contact) compliance - enabling robust transient suppression in space-constrained USB, headset, and microphone circuits.
For engineers reviewing the SZESD5B5.0ST1G datasheet, pinout, applications, or equivalent options, key selection criteria include low-capacitance signal integrity preservation, automotive-grade AEC-Q101 qualification, SOD-523 footprint compatibility, and Class 3 HBM ESD rating (>16 kV) for handheld device front-end protection.
Technical Context
This device operates as a bi-directional TVS diode with symmetrical clamping behavior across both polarities, optimized for I/O line protection where signal fidelity and fast transient response are critical. Its 32 pF capacitance at 0 V ensures minimal distortion on audio and USB 2.0 signals, while the 5.0 V VRWM aligns with 3.3 V and 5 V logic rail interfaces.
The SOD-523 package enables placement directly at connector entry points to minimize inductance and maximize ESD energy shunting efficiency. AEC-Q101 qualification confirms suitability for automotive infotainment and telematics modules requiring validated reliability under thermal cycling and humidity exposure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Stand-off Voltage | 5.0 V - matches 3.3 V/5 V system rails without leakage-induced bias shift |
| Clamping Voltage @ 1 A IPP | 7.8 V max - limits transient overvoltage to safe levels for downstream ICs |
| Capacitance @ 0 V | 32 pF - preserves signal integrity on audio and USB 2.0 differential pairs |
| ESD Rating (HBM) | Class 3 (>16 kV) - exceeds JEDEC JS-001 requirements for consumer portables |
| IEC 61000-4-2 Level | Level 4 (±30 kV contact) - certified for direct user-interface ESD immunity |
| Response Time | <1 ns typical - engages before sensitive transceivers experience overstress |
| Peak Pulse Power | 50 W @ 8 × 20 µs - handles multiple ESD strikes without degradation |
Pinout & Package
Package: SOD-523 (1.6 mm × 0.8 mm × 0.6 mm), Pb-free, matte tin lead finish, MSL 1, 260 °C reflow compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Input/Output Line Terminal | Connects to protected signal line (e.g., MIC+, USB D+); forms one side of bi-directional clamp path |
| Cathode (Pin 2) | Input/Output Line Terminal | Connects to same protected signal line (e.g., MIC−, USB D−); completes symmetrical ESD current path to ground |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional Clamping | Enables single-device protection of AC-coupled or differential lines without polarity constraints |
| AEC-Q101 Qualified | Validated for automotive infotainment, body control, and ADAS sensor interfaces |
| Low 32 pF Capacitance | Maintains >100 MHz bandwidth on audio paths and full-speed USB 2.0 signals |
| 0.6 mm Profile | Permits placement adjacent to connectors in ultra-thin mobile enclosures |
| ±30 kV IEC Contact ESD | Meets stringent end-equipment certification requirements for consumer and industrial handhelds |
Applications
| Smartphone Audio Jack Protection | USB 2.0 Data Line Protection |
|---|---|
Use Scenario: Protecting 3.5 mm TRRS headset jack pins from user-hand ESD during plug insertion/removal. IC Role / Device Role: Bi-directional transient voltage suppressor placed between jack contacts and codec input buffers. Use Value: 32 pF capacitance avoids high-frequency attenuation; 7.8 V clamping prevents codec latch-up or damage. | Use Scenario: Safeguarding USB 2.0 D+ and D− lines against ESD events in portable OTG accessories. IC Role / Device Role: Low-capacitance TVS diode mounted at USB micro-B connector entry point. Use Value: Sub-1 ns response captures ESD energy before it propagates to USB PHY; ±30 kV rating satisfies USB-IF compliance testing. |
| Automotive Infotainment Touchscreen Interface | Wearable Device Microphone Input |
Use Scenario: Shielding resistive/capacitive touchscreen controller I²C lines in vehicle head units. IC Role / Device Role: ESD clamp on SDA/SCL traces routed near display bezel openings. Use Value: AEC-Q101 qualification ensures operation across −40 °C to +125 °C junction range; 5.0 V VRWM avoids interference with 3.3 V I²C logic. | Use Scenario: Protecting MEMS microphone analog output in Bluetooth earbuds exposed to pocket discharge. IC Role / Device Role: Series-connected ESD diode on mic bias and output lines before ADC input. Use Value: 0.6 mm height allows integration beneath compact speaker modules; low leakage (<1 µA) prevents DC offset drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD5B5.0ST1G | Non-automotive grade; standard qualification; same electrical specs and SOD-523 package | Targeted for consumer portables, not automotive systems | Select when AEC-Q101 is not required and cost sensitivity is higher |
| TPD2E001DRYR | 2-channel array in X2SON-4; 15 pF capacitance; 5.5 V VRWM; 12 V clamping @ 1 A | Designed for dual-line protection (e.g., USB D+/D−) in single package | Choose for space-constrained dual-signal protection where lower capacitance outweighs higher clamping voltage |
Compared with ESD5B5.0ST1G and TPD2E001DRYR, SZESD5B5.0ST1G provides automotive-qualified reliability and tighter clamping (7.8 V vs. 12 V) in a single-line configuration, making it optimal for safety-critical or thermally demanding environments where individual line control and proven AEC-Q101 performance are mandatory.
Availability
SZESD5B5.0ST1G is available at Aetrix Electronics and suitable for smartphone audio jack protection, USB 2.0 data line hardening, and automotive infotainment interface shielding requiring stable component supply and long-term lifecycle support.
Supply support for SZESD5B5.0ST1G 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 and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The ESD5B Series, including SZESD5B5.0ST1G, was engineered specifically for high-density portable electronics requiring ultra-low capacitance, bi-directional clamping, and automotive-grade reliability in sub-1 mm packages.
FAQ
What is the primary function of the SZESD5B5.0ST1G?
The SZESD5B5.0ST1G is a bi-directional ESD protection diode designed to clamp transient voltages on signal lines. It safeguards sensitive IC inputs from electrostatic discharge events per IEC 61000-4-2 Level 4 and HBM Class 3 standards. Its 5.0 V stand-off voltage and 7.8 V clamping ensure compatibility with 3.3 V and 5 V interfaces without interfering with normal operation - a core function of the SZESD5B5.0ST1G in portable and automotive electronics.
Is the SZESD5B5.0ST1G qualified for automotive use?
Yes, the SZESD5B5.0ST1G is AEC-Q101 qualified and PPAP capable, with the "SZ" prefix indicating automotive and other applications requiring unique site and control change requirements. It meets rigorous stress tests including temperature cycling, humidity bias, and mechanical shock - confirming its suitability for infotainment systems, body electronics, and ADAS sensor interfaces where reliability under harsh conditions is essential. This qualification applies specifically to the SZESD5B5.0ST1G.
What package type does the SZESD5B5.0ST1G use?
The SZESD5B5.0ST1G uses the SOD-523 surface-mount package (Case 502), measuring 1.6 mm × 0.8 mm × 0.6 mm with a nominal 0.024″ body height. It features void-free transfer-molded thermosetting plastic, UL 94 V-0 rated epoxy, and 100% matte tin lead finish. The SOD-523 footprint supports high-density PCB layouts and is compatible with standard reflow profiles up to 260 °C - a defining physical attribute of the SZESD5B5.0ST1G.
How does the capacitance of the SZESD5B5.0ST1G affect signal integrity?
The SZESD5B5.0ST1G has a typical capacitance of 32 pF at 0 V, measured at 1 MHz. This low value minimizes loading on high-speed or analog signal paths - preserving bandwidth on audio lines (e.g., headset jacks) and maintaining signal rise/fall times on USB 2.0 D+/D− lines. Excessive capacitance would degrade edge rates and cause intersymbol interference; the 32 pF spec of the SZESD5B5.0ST1G balances ESD robustness with minimal signal distortion.
What is the maximum clamping voltage of the SZESD5B5.0ST1G during an ESD event?
The maximum clamping voltage of the SZESD5B5.0ST1G is 7.8 V at a peak pulse current (IPP) of 1 A, per the 8 × 20 µs waveform. This value is measured across the device terminals during standardized IEC 61000-4-2 testing and represents the upper limit of voltage imposed on protected circuitry. Maintaining clamping below 8 V ensures downstream components like audio codecs or USB transceivers remain within safe operating limits - a critical specification confirmed in the SZESD5B5.0ST1G datasheet.
SZESD5B5.0ST1G 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 5.8V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- 50W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 32pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
SZESD5B5.0ST1G FAQ
1.How can I place an order for SZESD5B5.0ST1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZESD5B5.0ST1G 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 SZESD5B5.0ST1G reliable?
The price and inventory of SZESD5B5.0ST1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZESD5B5.0ST1G is usually 5 days.
3.What payment methods are accepted for SZESD5B5.0ST1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZESD5B5.0ST1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZESD5B5.0ST1G?
SZESD5B5.0ST1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZESD5B5.0ST1G 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 SZESD5B5.0ST1G?
For technical support, including SZESD5B5.0ST1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZESD5B5.0ST1G requirements.
6.How does Aetrix verify that SZESD5B5.0ST1G is sourced from the original manufacturer or authorized distributors?
All SZESD5B5.0ST1G 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 SZESD5B5.0ST1G meets industry standards.
7.What is the process for return or replacement of SZESD5B5.0ST1G?
All SZESD5B5.0ST1G units undergo pre-shipment inspection (PSI). If there is an issue with SZESD5B5.0ST1G, 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 SZESD5B5.0ST1G part is unused and in its original packaging.
Return procedure for SZESD5B5.0ST1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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