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onsemi SZSL15T1G
- Part No.:
- SZSL15T1G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZSL15T1G.pdf
- Description:
- TVS DIODE 15VWM 30VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,990
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Product details
Overview
SZSL15T1G from onsemi is a unidirectional ESD protection diode in SOT-23 package, featuring 15 V working peak reverse voltage (VRWM), <10 pF junction capacitance at 1 MHz, 300 W peak pulse power (8 × 20 µs), ±12 kV IEC 61000−4−2 contact discharge rating, and AEC-Q101 qualification for automotive interfaces.
For engineers reviewing the SZSL15T1G datasheet, pinout, applications, or equivalent options, key selection criteria include low-capacitance transient suppression for high-speed USB/PCIe lines, unidirectional clamping behavior, thermal derating on FR-5 boards, and Pb-free SOT-23 assembly compatibility.
Technical Context
The SZSL15T1G implements a series-compensated diode architecture to achieve sub-5 pF typical capacitance-significantly lower than conventional TVS diodes-by leveraging series capacitance cancellation between surge and compensating diodes. It operates as a unidirectional clamping device with 16.7 V minimum breakdown voltage (VBR) at 1 mA.
Clamping occurs at ≤24 V under 5 A transient current (VC), with 1.0 µA max reverse leakage at VRWM. Its thermal resistance is 556 °C/W on FR-5 board, and it supports reflow soldering up to 260 °C for 10 seconds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 15 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min) | 16.7 V @ 1 mA - Ensures reliable avalanche initiation above signal swing in 12–15 V I/O rails |
| VC @ 5 A | 24 V - Clamping voltage limits downstream IC stress during 5 A transients |
| CJ @ 0 V | 10 pF typ - Enables use on >1 Gbps data lines without signal integrity degradation |
| Ppk | 300 W @ 8 × 20 µs - Withstands lightning-surge-level energy per IEC 61000−4−5 |
| IEC 61000−4−2 | ±12 kV contact - Meets automotive-grade ESD immunity for infotainment and ADAS ports |
| AEC−Q101 | Qualified - Validated for temperature cycling, HTRB, and ESD robustness in automotive environments |
Pinout & Package
SOT-23 (TO-236) package, void-free thermosetting plastic case, UL 94 V-0 rated, optimized for automated placement and reflow soldering. Dimensions conform to CASE 318, STYLE 26.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to protected I/O line; forward-biased during positive transients |
| 2 | Cathode | Connected to ground reference; reverse-biased during normal operation |
| 3 | No Connect | Internally isolated terminal; no PCB routing or external connection required |
Key Features
| Feature | Design Value |
|---|---|
| Series-compensated diode topology | Reduces effective junction capacitance to 10 pF max-critical for USB 3.0, HDMI, and MIPI D-PHY compliance |
| Unidirectional clamping | Protects only against negative transients on grounded-cathode configurations; avoids DC path disruption on bidirectional buses |
| AEC-Q101 qualification | Validated for −55 °C to +150 °C operation with 1000-cycle temperature cycling and 1000-hr HTRB reliability testing |
| Pb-free, Halogen-free/BFR-free | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) |
Applications
| USB 3.0 Data Lines | HDMI Source Port Protection |
|---|---|
Use Scenario: Protecting SuperSpeed differential pairs in laptop docking stations against ESD events during cable insertion. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed inline between connector and USB controller PHY. Use Value: 10 pF capacitance prevents eye diagram closure; ±12 kV contact ESD rating exceeds USB-IF compliance requirements. | Use Scenario: Shielding HDMI transmitter pins in automotive head units from hot-plug transients and dashboard ESD. IC Role / Device Role / Timing Role: Ground-referenced transient suppressor on TMDS clock and data channels. Use Value: 24 V clamping voltage ensures HDMI sink ICs remain below absolute maximum ratings during 5 A surges. |
| Automotive Infotainment I/O | Industrial Camera Interface (LVDS) |
Use Scenario: Safeguarding CAN-FD debug headers and SD card slots in telematics control units exposed to cabin ESD. IC Role / Device Role / Timing Role: AEC-Q101-qualified unidirectional protector on 3.3 V/5 V auxiliary I/O lines. Use Value: 15 V VRWM aligns with 5 V logic rail margins; MSL1 rating supports lead-free reflow in high-volume automotive PCB assembly. | Use Scenario: Guarding LVDS clock and data pairs in machine vision cameras connected to robotic arms subject to motion-induced static discharge. IC Role / Device Role / Timing Role: Low-capacitance shunt element on differential pairs referenced to chassis ground. Use Value: Sub-10 pF capacitance preserves LVDS common-mode rejection and jitter performance up to 800 Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD5Z15T1G | Same SOT-23 package, identical 15 V VRWM and 24 V VC @ 5 A, but 12 pF max capacitance (vs. 10 pF) | Marginally higher capacitance may affect >1 Gbps signaling integrity | Preferred where cost sensitivity outweighs ultra-low capacitance requirement |
| TPD2E001DRYR | 2-channel array in X2SON-4, 15 V VRWM, 12 V VC @ 1 A, 3.5 pF typical capacitance | Lower clamping voltage but limited to 1 A peak current; not rated for 300 W surges | Selected for space-constrained dual-line protection where 5 A surge immunity is not required |
Compared with ESD5Z15T1G and TPD2E001DRYR, the SZSL15T1G delivers superior 300 W surge handling and tighter 10 pF capacitance-making it optimal for automotive and industrial high-speed interfaces demanding both robustness and signal fidelity.
Availability
SZSL15T1G is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial camera interfaces, and high-speed USB 3.0 peripherals requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SZSL15T1G 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 (Nasdaq: ON) is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The SZSL15T1G belongs to onsemi's SL05T1G Series of low-capacitance ESD protection diodes, engineered specifically for high-speed data line protection in automotive and industrial environments where signal integrity and AEC-Q101 reliability are mandatory.
FAQ
What is the clamping voltage of SZSL15T1G at 5 A transient current?
The SZSL15T1G has a maximum clamping voltage (VC) of 24 V when subjected to a 5 A peak pulse current (8 × 20 µs waveform). This value is specified in the Electrical Characteristics table and ensures downstream ICs remain within safe operating limits during surge events. The clamping behavior is unidirectional, with cathode tied to ground. SZSL15T1G maintains this performance across its full operating temperature range of −55 °C to +150 °C.
Is SZSL15T1G suitable for bidirectional signal lines like USB 2.0 D+ and D−?
SZSL15T1G is a unidirectional ESD protector and is not inherently suitable for bidirectional lines without additional circuitry. For USB 2.0, two SZSL15T1G devices must be connected in inverse-parallel-one anode-to-line/cathode-to-ground, the other cathode-to-line/anode-to-ground-to achieve symmetrical protection. Direct use on single-ended bidirectional paths risks forward conduction during normal signal swings. SZSL15T1G's design assumes a fixed polarity reference to ground.
Does SZSL15T1G meet AEC-Q101 requirements for automotive use?
Yes, SZSL15T1G is explicitly AEC-Q101 qualified and PPAP capable, as confirmed in the ordering information and features section of the official datasheet. It undergoes stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD robustness validation per AEC-Q101 Rev D. The "SZ" prefix denotes automotive-grade traceability and process controls. SZSL15T1G is approved for use in engine control modules, infotainment systems, and ADAS sensor interfaces.
What is the maximum junction capacitance of SZSL15T1G at zero bias?
The maximum junction capacitance (CJ) of SZSL15T1G is 10 pF at 0 V bias and 1 MHz, as stated in the Electrical Characteristics table. Typical capacitance is lower-approximately 5 pF-enabling minimal signal distortion on high-speed interfaces. This low value results from the integrated series-compensating diode architecture, distinguishing SZSL15T1G from standard TVS diodes. Capacitance remains stable across temperature and bias conditions relevant to USB, HDMI, and LVDS applications.
Can SZSL15T1G replace SL15T1G in existing designs?
Yes, SZSL15T1G is a direct replacement for SL15T1G with identical electrical specifications, SOT-23 package, and pinout. The "SZ" prefix indicates enhanced automotive traceability, AEC-Q101 qualification, and PPAP capability-while retaining all performance parameters of the commercial SL15T1G. No layout or schematic changes are needed. SZSL15T1G offers backward compatibility and added assurance for automotive-tier production, making it the preferred choice where qualification and supply chain rigor are required.
SZSL15T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 30V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 3.5pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3 (TO-236)
SZSL15T1G FAQ
1.How can I place an order for SZSL15T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZSL15T1G 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 SZSL15T1G reliable?
The price and inventory of SZSL15T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZSL15T1G is usually 5 days.
3.What payment methods are accepted for SZSL15T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZSL15T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZSL15T1G?
SZSL15T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZSL15T1G 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 SZSL15T1G?
For technical support, including SZSL15T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZSL15T1G requirements.
6.How does Aetrix verify that SZSL15T1G is sourced from the original manufacturer or authorized distributors?
All SZSL15T1G 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 SZSL15T1G meets industry standards.
7.What is the process for return or replacement of SZSL15T1G?
All SZSL15T1G units undergo pre-shipment inspection (PSI). If there is an issue with SZSL15T1G, 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 SZSL15T1G part is unused and in its original packaging.
Return procedure for SZSL15T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZSL15T1G Tags
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ESD9B5.0ST5G
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D12V0L1B2LP-7B
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PESD2V0Y1BSFYL
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