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onsemi SZESDM3551MXT5G
- Part No.:
- SZESDM3551MXT5G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
SZESDM3551MXT5G.pdf
- Description:
- TVS DIODE 5.5VWM 7.5VC 2X3DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,836
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Product details
Overview
SZESDM3551MXT5G from onsemi is a bi-directional TVS diode designed for IEC 61000−4−2 Level 4 ESD protection of voltage-sensitive signal lines, featuring 5.5 V stand-off voltage, 21 pF junction capacitance at 0 V, 6.0 V clamping voltage at 1 A, and 8.2 V clamping voltage at 8 A peak pulse current - deployed in USB ID line, SD card, audio line, and GPIO protection.
For engineers reviewing the SZESDM3551MXT5G datasheet, pinout, applications, or equivalent options, key selection criteria include clamping performance under 8/20 µs transients, low-capacitance signal integrity preservation, AEC−Q101 qualification for automotive use, and X3DFN2 (0201) footprint compatibility with space-constrained PCB layouts.
Technical Context
The SZESDM3551MXT5G employs a bi-directional silicon avalanche structure optimized for fast response to ±30 kV contact/air ESD events per IEC 61000−4−2. Its low dynamic resistance (0.11 Ω) and sub-10 ns turn-on enable effective voltage clamping before sensitive ICs are overstressed.
Designed for signal-line protection, it delivers 21 pF capacitance at 0 V and only 0.01 dB insertion loss at 10 MHz - ensuring minimal impact on high-speed digital or analog signal integrity in USB, SD, and audio interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage | 5.5 V - maximum continuous reverse working voltage before leakage exceeds 0.1 µA; sets upper limit for protected line DC bias. |
| Clamping Voltage @ 1 A | 6.0 V - peak voltage across device during 8/20 µs transient at 1 A; ensures downstream ICs see <6.0 V stress. |
| Clamping Voltage @ 8 A | 8.2 V - clamped voltage under severe 8 A surge; critical for robustness against repeated ESD strikes. |
| Junction Capacitance | 21 pF @ 0 V, 1 MHz - low enough to avoid signal distortion on USB 2.0 or SD card clock/data lines. |
| ESD Rating | ±30 kV contact & air per IEC 61000−4−2 Level 4 - exceeds industrial and automotive immunity requirements. |
| Peak Pulse Current | 9.9 A @ 8/20 µs - quantifies maximum transient energy the device can safely shunt without degradation. |
| AEC−Q101 Qualified | Yes - validated for automotive applications including infotainment and body electronics with temperature cycling and HTRB testing. |
Pinout & Package
X3DFN2 package (Case 152AF), 0.62 mm × 0.32 mm × 0.24 mm body, 0.35 mm pitch, 0.3 mm max height - ultra-compact 0201 footprint optimized for dense portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode (Bi-directional) | Common terminal for dual-diode configuration; connects to protected signal line (e.g., USB ID). |
| Pin 2 | Cathode (Bi-directional) | Common terminal tied to ground plane; completes low-inductance ESD current path to chassis or system GND. |
Key Features
| Feature | Design Value |
|---|---|
| Low Clamping Voltage | 6.0 V at 1 A enables protection of 5 V logic and USB PHYs without violating absolute maximum ratings. |
| Ultra-Small 0201 Footprint | 0.62 mm × 0.32 mm area saves >50% board space vs. 0402 alternatives - critical for thin smartphones and wearables. |
| Automotive-Qualified | AEC−Q101 certification confirms reliability under −40°C to +125°C operation and thermal cycling stress for automotive ECUs. |
| Low Dynamic Resistance | 0.11 Ω measured via TLP - minimizes IR drop during ESD, sustaining lower clamping voltage across full current range. |
| IEC61000−4−2 Level 4 Compliance | Validated for ±30 kV contact discharge - meets highest system-level ESD immunity standard without external filtering. |
Applications
| USB ID Line Protection | SD Card Protection |
|---|---|
Use Scenario: Protecting USB On-The-Go (OTG) ID pin from ESD during cable insertion/removal in smartphones and tablets. IC Role / Device Role / Timing Role: Bi-directional TVS clamp placed directly at connector, shunting ESD current to ground before reaching USB controller. Use Value: Prevents latch-up or gate oxide damage in USB PHYs while maintaining <21 pF loading for reliable ID detection timing. |
Use Scenario: Safeguarding SD card interface data and command lines (CMD, DAT0–DAT3) in portable media devices. IC Role / Device Role / Timing Role: Low-capacitance ESD suppressor mounted adjacent to SD card slot, minimizing trace inductance for fast transient response. Use Value: Ensures uninterrupted SD card enumeration and read/write operations by limiting clamped voltage to ≤8.2 V during ±15 kV air discharge. |
| Audio Line Protection | GPIO Protection |
Use Scenario: Shielding stereo headphone output (L/R) and microphone input lines in headsets and voice-enabled IoT devices. IC Role / Device Role / Timing Role: Signal-line protector placed between codec and jack, preserving analog signal fidelity up to 20 kHz. Use Value: Delivers 0.01 dB insertion loss at 10 MHz and 21 pF capacitance - avoids bass roll-off or treble attenuation in audio paths. |
Use Scenario: Hardening general-purpose I/O pins on microcontrollers used in industrial sensors and automotive body modules. IC Role / Device Role / Timing Role: Standalone ESD guard for uncommitted MCU pins exposed to user-accessible connectors or buttons. Use Value: Provides AEC−Q101-qualified protection with 5.5 V stand-off - compatible with 3.3 V and 5 V GPIO voltage domains without level-shifting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD3551MXT5G | Same die, non-automotive grade; lacks SZ prefix and AEC−Q101 qualification; identical electrical specs and X3DFN2 package. | Not approved for automotive production; suitable for consumer electronics where PPAP and extended temperature validation not required. | Select SZESDM3551MXT5G when automotive compliance, site-specific control, or PPAP documentation is mandatory. |
| TPD2E001DRYR | 2-channel, 0.65 mm × 0.65 mm DRY package; 12 pF capacitance; 6.5 V clamping @ 1 A; supports higher bandwidth but larger footprint. | Preferred for multi-line protection (e.g., USB D+/D−); less optimal for single-line space-critical placements like ID or MIC. | Choose SZESDM3551MXT5G for single-line, ultra-dense 0201 layouts; choose TPD2E001DRYR when protecting two lines simultaneously with tighter capacitance budget. |
Compared with ESD3551MXT5G and TPD2E001DRYR, SZESDM3551MXT5G uniquely combines AEC−Q101 qualification, 0201 size, and 21 pF capacitance - making it the only option qualified for automotive signal-line ESD protection in space-constrained modules.
Availability
SZESDM3551MXT5G is available at Aetrix Electronics and suitable for USB ID line protection, SD card interface hardening, and automotive GPIO protection requiring stable component supply, long-term lifecycle support, and AEC−Q101-compliant sourcing.
Supply support for SZESDM3551MXT5G 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 (Semiconductor Components Industries, LLC) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
SZESDM3551MXT5G belongs to onsemi's ESDM3551 family of ultra-low-capacitance TVS diodes - engineered specifically for high-speed signal-line ESD protection in automotive and portable electronics where board space and signal integrity are critical constraints.
FAQ
What is the clamping voltage of SZESDM3551MXT5G at 8 A peak pulse current?
The clamping voltage of SZESDM3551MXT5G is 8.2 V at 8 A peak pulse current (8/20 µs waveform), as specified in the Electrical Characteristics table. This value reflects the maximum voltage seen across the device during a high-energy ESD event, ensuring protected ICs remain within safe operating limits. The SZESDM3551MXT5G maintains this performance consistently due to its low dynamic resistance of 0.11 Ω.
Is SZESDM3551MXT5G qualified for automotive applications?
Yes, SZESDM3551MXT5G is AEC−Q101 qualified and PPAP capable, with the "SZ" prefix indicating automotive-grade manufacturing controls and site-specific change management. It operates across −55°C to +150°C junction temperature and has passed rigorous stress tests including temperature cycling and highly accelerated life testing - confirming suitability for automotive infotainment and body control modules.
What package does SZESDM3551MXT5G use, and what are its dimensions?
SZESDM3551MXT5G uses the X3DFN2 package (Case 152AF), a 2-terminal 0201-size surface-mount outline measuring 0.62 mm × 0.32 mm × 0.24 mm with 0.35 mm pitch. Its 0.3 mm max height enables ultra-thin designs, and the Pb-free, halogen-free construction complies with RoHS Directive 2011/65/EU.
How does the 21 pF junction capacitance of SZESDM3551MXT5G affect signal integrity?
The 21 pF junction capacitance of SZESDM3551MXT5G at 0 V and 1 MHz is optimized to minimize loading on high-speed signal lines - enabling reliable operation on USB 2.0 (480 Mbps), SD card (up to 104 MB/s), and audio interfaces without measurable signal degradation. Measured insertion loss is only 0.01 dB at 10 MHz, confirming negligible impact on timing margins and rise/fall times.
What ESD standards does SZESDM3551MXT5G meet?
SZESDM3551MXT5G meets IEC 61000−4−2 Level 4 for both contact (±30 kV) and air (±30 kV) discharge, plus ISO 10605 (150 pF/2 kΩ, 330 pF/2 kΩ, 330 pF/330 Ω). These certifications validate its ability to protect downstream circuitry from real-world electrostatic events encountered during handling, assembly, and end-user operation - especially critical in automotive and portable electronics.
SZESDM3551MXT5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- 0201 (0603 Metric)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5.5V (Max)
- Voltage - Breakdown (Min):
- 5.6V
- Voltage - Clamping (Max) @ Ipp:
- 7.5V (Typ)
- Current - Peak Pulse (10/1000µs):
- 16A
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- USB
- Capacitance @ Frequency:
- 21pF @ 1MHz (Max)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-X3DFN (0.6x0.3) (0201)
SZESDM3551MXT5G FAQ
1.How can I place an order for SZESDM3551MXT5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZESDM3551MXT5G 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 SZESDM3551MXT5G reliable?
The price and inventory of SZESDM3551MXT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZESDM3551MXT5G is usually 5 days.
3.What payment methods are accepted for SZESDM3551MXT5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZESDM3551MXT5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZESDM3551MXT5G?
SZESDM3551MXT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZESDM3551MXT5G 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 SZESDM3551MXT5G?
For technical support, including SZESDM3551MXT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZESDM3551MXT5G requirements.
6.How does Aetrix verify that SZESDM3551MXT5G is sourced from the original manufacturer or authorized distributors?
All SZESDM3551MXT5G 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 SZESDM3551MXT5G meets industry standards.
7.What is the process for return or replacement of SZESDM3551MXT5G?
All SZESDM3551MXT5G units undergo pre-shipment inspection (PSI). If there is an issue with SZESDM3551MXT5G, 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 SZESDM3551MXT5G part is unused and in its original packaging.
Return procedure for SZESDM3551MXT5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZESDM3551MXT5G Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
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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
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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
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