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onsemi SZSD05T1G
- Part No.:
- SZSD05T1G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SZSD05T1G.pdf
- Description:
- TVS DIODE 5VWM 9.8VC SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:4,428
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Product details
Overview
SZSD05T1G from onsemi is a unidirectional ESD protection diode in SOD-323 package, rated for 5.0 V working peak reverse voltage (VRWM), 9.8 V clamping voltage at 5 A peak pulse current (VC), and 350 W peak power dissipation (8/20 µs). It meets IEC61000-4-2 Level 4 (±15 kV air, ±8 kV contact), IEC61000-4-4 Level 4 (40 A), and 30 kV HBM ESD, and is qualified to AEC-Q101 for automotive use.
For engineers reviewing the SZSD05T1G datasheet, pinout, applications, or equivalent options, key selection criteria include clamping performance under 5 A transient stress, low 350 pF capacitance at 0 V bias, compliance with automotive-grade ESD and surge immunity standards, and Pb-free SOD-323 footprint compatibility with space-constrained USB, HDMI, and automotive sensor interfaces.
Technical Context
The SZSD05T1G is a single-channel, unidirectional TVS diode optimized for low-capacitance transient suppression on high-speed data lines. Its silicon avalanche structure delivers precise 6.2–7.3 V breakdown (VBR) at 1 mA test current and maintains sub-10 nA leakage at VRWM, enabling robust protection without signal integrity degradation.
Designed for IEC-compliant system-level ESD and EFT immunity, it sustains 350 W peak pulse power per 8/20 µs waveform while operating across −55 °C to +150 °C junction temperature range. The device uses a thermoset plastic SOD-323 case with matte tin leads and meets MSL 1 reflow requirements up to 260 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 5.0 V - Maximum continuous reverse operating voltage before clamping begins; sets upper limit for protected line DC bias. |
| VBR (min/max) | 6.2 V / 7.3 V - Breakdown initiates within this range at 1 mA; ensures predictable turn-on during transients. |
| VC @ IPP = 5 A | 9.8 V - Clamped voltage seen by downstream circuitry during 5 A ESD event; defines maximum stress on IC I/O. |
| Peak Power (8/20 µs) | 350 W - Transient energy handling capacity; supports Level 4 IEC61000-4-2 and IEC61000-4-4 compliance. |
| Capacitance @ 0 V | 350 pF - Low parasitic loading on high-speed lines such as USB 2.0 or CAN FD, minimizing signal distortion. |
| Leakage @ VRWM | <10 nA - Negligible DC loading on battery-powered or high-impedance sensor inputs. |
| Operating Temp Range | −55 °C to +150 °C - Validated for under-hood automotive and industrial environments requiring extended thermal margin. |
Pinout & Package
SZSD05T1G is housed in a Pb-free SOD-323 surface-mount package (1.70 × 1.25 × 0.85 mm), with cathode indicated by a polarity band. The package is void-free, transfer-molded thermoset plastic (UL 94 V-0), matte tin-plated, and MSL 1 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to system ground or low-impedance return path; conducts avalanche current during positive transients on anode side. |
| 2 (Non-banded End) | Anode | Connected to protected I/O line; provides low-impedance shunt path to ground when transient exceeds VRWM. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive applications including infotainment, ADAS sensors, and body control modules requiring PPAP documentation. |
| IEC61000-4-2 Level 4 Compliance | Withstands ±15 kV air discharge and ±8 kV contact discharge-meets highest standard for end-equipment ESD immunity. |
| Low Capacitance (350 pF) | Preserves signal rise/fall times on 480 Mbps USB 2.0 and 100 Mbps CAN FD buses without added jitter or attenuation. |
| 300 mW Steady-State Power | Supports continuous operation in always-on monitoring circuits without thermal runaway under normal bias conditions. |
| Pb-Free & RoHS Compliant | Meets global environmental regulations and enables lead-free reflow assembly with 260 °C peak profile compatibility. |
Applications
| USB 2.0 Port Protection | HDMI Interface Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of embedded USB host/device ports against ESD events during hot-plug and field use. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between each data line and ground, clamping transients before they reach USB transceiver PHY. Use Value: 350 pF capacitance avoids signal integrity loss at 480 Mbps; 9.8 V clamping prevents damage to 3.3 V tolerant PHY I/O structures. | Use Scenario: Safeguarding TMDS clock and data channels in automotive head-unit HDMI outputs exposed to service technician handling. IC Role / Device Role / Timing Role: Per-channel unidirectional clamp on each TMDS pair, referenced to chassis ground to suppress common-mode surges. Use Value: AEC-Q101 qualification ensures reliability across −40 °C to +105 °C ambient; 350 W peak power handles multiple ESD strikes without degradation. |
| Automotive Sensor I/O Protection | Industrial CAN FD Node Protection |
Use Scenario: Shielding analog and digital I/O pins of pressure, temperature, or position sensors mounted in engine compartments. IC Role / Device Role / Timing Role: Point-of-entry TVS on sensor harness interface PCB, placed immediately before connector to minimize inductance in clamping path. Use Value: −55 °C to +150 °C operating range matches under-hood thermal profiles; low leakage preserves microamp-level sensor bias accuracy. | Use Scenario: Protecting CAN FD transceiver RX/TX pins in factory automation controllers subject to cable discharge events and switching noise. IC Role / Device Role / Timing Role: Bidirectional protection not required-unidirectional SZSD05T1G used with proper grounding to suppress positive-going transients on dominant bus states. Use Value: 5.0 V VRWM aligns with 5 V CAN FD supply rails; 350 pF capacitance avoids bit error rate increase at 5 Mbps data rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD5Z5.0T1G | Same SOD-323 package, identical VRWM (5.0 V), but lower 240 W peak power (vs. 350 W) and higher 12 V clamping at 5 A. | Less robust for repeated EFT bursts or lightning-simulated surges per IEC61000-4-5; suitable only for light-duty consumer USB ports. | Select when cost sensitivity outweighs surge margin, and system-level testing confirms 240 W suffices. |
| SMF5.0A | SMA package (larger footprint), same 5.0 V VRWM, but 200 W peak power and 14.5 V clamping at 5 A; no AEC-Q101 qualification. | Not automotive-qualified; higher clamping increases risk to 3.3 V logic; requires PCB area increase (~3× SOD-323). | Choose only for non-automotive industrial designs where board space permits and AEC-Q101 is unnecessary. |
Compared with ESD5Z5.0T1G and SMF5.0A, SZSD05T1G offers superior surge robustness (350 W), tighter clamping (9.8 V), and automotive qualification-making it the preferred choice for safety-critical, space-constrained, and high-reliability ESD protection where sustained transient immunity matters.
Availability
SZSD05T1G is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial USB-HID peripherals, and medical patient-monitoring interfaces requiring stable component supply despite its discontinued status through legacy channel support and consignment inventory.
Supply support for SZSD05T1G 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The SZSD05T1G belongs to onsemi's SD05T1/SZSD05T1 series of ultra-low-capacitance TVS diodes, engineered specifically for high-speed data line protection in automotive and industrial systems demanding AEC-Q101 reliability and IEC-compliant surge immunity.
FAQ
Is SZSD05T1G still in active production?
No, SZSD05T1G is officially marked as discontinued per onsemi's September 2025 datasheet revision. However, Aetrix Electronics maintains limited legacy stock and supports design-in continuity via controlled allocation and cross-reference guidance for qualified replacements.
What is the clamping voltage of SZSD05T1G at 5 A peak pulse current?
The clamping voltage (VC) of SZSD05T1G is 9.8 V when subjected to a 5 A peak pulse current with an 8/20 µs waveform. This value is specified in the Electrical Characteristics table and defines the maximum voltage transferred to protected circuitry during an ESD event.
Does SZSD05T1G meet AEC-Q101 qualification requirements?
Yes, SZSD05T1G is explicitly AEC-Q101 qualified and PPAP capable, as confirmed in the datasheet's Specification Features section. This qualification validates its suitability for automotive applications including powertrain, chassis, and infotainment subsystems.
Can SZSD05T1G be used for bidirectional signal lines like RS-485?
No, SZSD05T1G is a unidirectional device intended for single-polarity protection (e.g., 5 V I/O to ground). For bidirectional lines such as RS-485, a symmetric or bidirectional TVS like SZ1.5SMF5.0A would be required-SZSD05T1G lacks reverse-direction clamping capability.
What is the maximum operating temperature range for SZSD05T1G?
The junction and storage temperature range for SZSD05T1G is −55 °C to +150 °C, as stated in the Maximum Ratings table. This wide range supports deployment in under-hood automotive environments and high-temperature industrial enclosures.
SZSD05T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- SC-76, SOD-323
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.2V
- Voltage - Clamping (Max) @ Ipp:
- 9.8V
- Current - Peak Pulse (10/1000µs):
- 24A (8/20µs)
- Power - Peak Pulse:
- 350W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 350pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
SZSD05T1G FAQ
1.How can I place an order for SZSD05T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZSD05T1G 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 SZSD05T1G reliable?
The price and inventory of SZSD05T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZSD05T1G is usually 5 days.
3.What payment methods are accepted for SZSD05T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZSD05T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZSD05T1G?
SZSD05T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZSD05T1G 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 SZSD05T1G?
For technical support, including SZSD05T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZSD05T1G requirements.
6.How does Aetrix verify that SZSD05T1G is sourced from the original manufacturer or authorized distributors?
All SZSD05T1G 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 SZSD05T1G meets industry standards.
7.What is the process for return or replacement of SZSD05T1G?
All SZSD05T1G units undergo pre-shipment inspection (PSI). If there is an issue with SZSD05T1G, 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 SZSD05T1G part is unused and in its original packaging.
Return procedure for SZSD05T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZSD05T1G Tags
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PESD2V0Y1BSFYL
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