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onsemi SZNUP2115LT1G
- Part No.:
- SZNUP2115LT1G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZNUP2115LT1G.pdf
- Description:
- TVS DIODE 24VWM 50VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,057
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Product details
Overview
SZNUP2115LT1G from onsemi is a dual bidirectional ESD protection diode in SOT−23 package, designed specifically for FlexRay bus transceivers. It delivers 200 W peak power dissipation per line (8/20 µs), clamps at 33.4 V @ 1 A, exhibits ≤10 pF capacitance at 1 MHz, and meets IEC 61000−4−2 Level 4 (±30 kV contact). Its role is transient voltage suppression on high-speed automotive data lines.
For engineers reviewing the SZNUP2115LT1G datasheet, pinout, applications, or equivalent options, key selection criteria include bidirectional clamping voltage matching, low capacitance for >10 Mbps FlexRay signaling, AEC−Q101 qualification, and SOT−23 footprint compatibility with space-constrained automotive ECUs.
Technical Context
The SZNUP2115LT1G integrates two matched Zener-based bidirectional surge suppressors in a single SOT−23 package, each protecting one FlexRay differential line (CAN/FlexRay-compatible layout). It uses optimized PN junction area to absorb transient energy without latch-up, supporting non-repetitive surges up to 8.0 A (ISO 7637−1 Pulse 2) and repetitive EFT bursts of 50 A (5/50 ns).
Its electrical behavior is defined by reverse working voltage (VRWM = 24 V), breakdown voltage (VBR = 26.2–32 V @ 1 mA), and tight capacitance matching (<2% difference between lines), ensuring signal integrity across differential pairs. Clamping performance is validated at IPP = 1 A (VC = 33.4–36.6 V) and IPP = 3 A (VC = 44–50 V), enabling robust system-level EMI immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Device Type | Dual bidirectional ESD protection diode array for differential data lines |
| VRWM | 24 V - Maximum continuous reverse voltage before conduction; matches FlexRay DC bias levels |
| VBR (min) | 26.2 V @ 1 mA - Ensures reliable turn-on above normal operating voltage while avoiding false triggering |
| VC @ 1 A | 33.4 V max - Clamps transients to safe level below FlexRay transceiver absolute maximum ratings |
| CJ | ≤10 pF @ 0 V, 1 MHz - Enables <10 Mbps FlexRay signaling without signal distortion or rise-time degradation |
| Capacitance Matching | ≤2% difference between lines - Maintains common-mode rejection and differential signal symmetry |
| Peak Power | 200 W @ 8/20 µs - Withstands automotive ESD and EFT events per IEC 61000−4−2/−4 and ISO 7637 |
Pinout & Package
SZNUP2115LT1G uses the SOT−23 (TO−236) package (2.90 × 1.30 × 1.00 mm, 1.90 mm pitch), case 318, style 27 - confirmed per onsemi mechanical drawing 98ASB42226B. Pin configuration is cathode-cathode-cathode (C-C-C), with Pin 1 and Pin 2 both connected to cathodes of respective protection paths, and Pin 3 serving as shared anode reference (ground connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode (Line 1) | Connects to FlexRay CHA or TX+ line; provides low-impedance path to ground during positive transients |
| Pin 2 | Cathode (Line 2) | Connects to FlexRay CHB or TX− line; enables matched bidirectional clamping with Pin 1 |
| Pin 3 | Anode (Common Ground) | Shared ground return for both protection paths; must be low-inductance connection to system GND |
Key Features
| Feature | Design Value |
|---|---|
| AEC−Q101 qualified | Validated for automotive underhood temperature range (−55 °C to +150 °C junction) and mechanical stress |
| IEC 61000−4−2 Level 4 | Withstands ±30 kV contact discharge - exceeds standard automotive ESD requirements |
| Low leakage current | <100 nA @ 24 V - Prevents signal loading and battery drain in always-on FlexRay nodes |
| UL 94 V−0 rating | Flame-retardant epoxy package - satisfies automotive interior material safety standards |
| Pb−Free (RoHS compliant) | Meets EU RoHS Directive 2011/65/EU and JESD204B process requirements |
Applications
| FlexRay Bus Protection | Automotive Domain Controller I/O |
|---|---|
|
Use Scenario: Protecting FlexRay communication interfaces in ADAS domain controllers against ESD events during vehicle assembly or service. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed directly at connector entry point before transceiver input pins. Use Value: Limits clamping voltage to ≤36.6 V at 1 A, keeping transceiver inputs within safe operating area while preserving 10 Mbps data integrity via ≤10 pF capacitance. |
Use Scenario: Securing high-speed diagnostic and firmware update ports in body control modules exposed to shop-floor ESD. IC Role / Device Role / Timing Role: Dual-line ESD clamp integrated into PCB-level surge protection network alongside TVS arrays and ferrites. Use Value: Matches capacitance across differential pair (<2% mismatch) to maintain common-mode noise rejection and minimize bit error rate during UDS diagnostics. |
| Electric Powertrain CAN/FlexRay Gateways | Automotive Camera Link Interfaces |
|
Use Scenario: Shielding FlexRay-to-CAN gateway modules in electric drivetrain systems from conducted surges induced by high-current switching. IC Role / Device Role / Timing Role: Primary ESD protection element meeting ISO 7637−1 Pulse 2 (8.0 A) and IEC 61000−4−4 EFT (50 A) requirements. Use Value: Absorbs 200 W peak transient energy without degradation, enabling compliance with OEM EMC test plans for powertrain ECUs. |
Use Scenario: Protecting serialized camera links (e.g., GMSL/FlexRay hybrid) in surround-view systems from handling ESD during manufacturing. IC Role / Device Role / Timing Role: Low-capacitance Zener array placed adjacent to serializer/deserializer IC inputs to prevent latch-up. Use Value: Delivers <100 nA reverse leakage at 24 V, eliminating DC offset errors and ensuring stable biasing of high-gain analog front-ends. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD5Z3.3T5G | Single-line, 3.3 V VRWM; lower clamping (10.5 V @ 1 A); higher capacitance (110 pF) | Targeted at low-voltage logic I/O (e.g., MCU GPIO), not differential high-speed buses | Select only for sub-5 Mbps interfaces where capacitance tolerance >50 pF is acceptable |
| TPD2E001DRYR | Dual-line, 5 V VRWM; 12 pF capacitance; supports USB 2.0 but not AEC−Q101 qualified | Designed for consumer USB/DisplayPort; lacks automotive surge ratings (ISO 7637, EFT 50 A) | Use only in non-automotive industrial or infotainment subsystems with no EMI certification requirements |
Compared with SZNUP2115LT1G, ESZ5Z3.3T5G offers lower clamping but cannot protect FlexRay's 24 V bias or meet automotive surge standards, while TPD2E001DRYR provides dual-line protection but lacks AEC−Q101 validation and fails ISO 7637−1 Pulse 2 compliance - making SZNUP2115LT1G the only qualified solution for production FlexRay nodes.
Availability
SZNUP2115LT1G is available at Aetrix Electronics and suitable for automotive FlexRay networks, domain controller I/O protection, and electric powertrain gateways requiring stable component supply, long-term lifecycle support, and AEC−Q101-compliant sourcing.
Supply support for SZNUP2115LT1G 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 focused on energy-efficient electronics, with core expertise in automotive, industrial, cloud, and sensing solutions.
The SZNUP2115LT1G belongs to onsemi's automotive-grade ESD protection portfolio, engineered specifically to meet stringent OEM requirements for FlexRay, CAN FD, and high-speed serial bus immunity in harsh automotive environments.
FAQ
What is the primary circuit role of the SZNUP2115LT1G in a FlexRay system?
The SZNUP2115LT1G serves as a dual-line bidirectional transient voltage suppressor placed directly at the FlexRay transceiver's input pins. It clamps ESD and surge events to safe voltage levels (≤36.6 V @ 1 A) while maintaining signal fidelity through ≤10 pF capacitance and <2% capacitance matching between lines - preventing damage and ensuring reliable 10 Mbps communication in automotive ECUs.
Does the SZNUP2115LT1G meet AEC−Q101 reliability standards?
Yes, the SZNUP2115LT1G is explicitly AEC−Q101 qualified and PPAP capable, as stated in the onsemi datasheet. It operates across −55 °C to +150 °C junction temperature and passes accelerated stress tests including temperature cycling, humidity bias HAST, and ESD robustness - confirming suitability for under-hood automotive applications.
What is the exact pin configuration and package type of the SZNUP2115LT1G?
The SZNUP2115LT1G uses the SOT−23 (TO−236) package (case 318, style 27) with dimensions 2.90 × 1.30 × 1.00 mm. Pin 1 and Pin 2 are cathodes for Line 1 and Line 2 respectively; Pin 3 is the common anode (ground terminal), confirmed by onsemi mechanical drawing 98ASB42226B and marking diagram.
How does the SZNUP2115LT1G compare to standard Zener diodes in surge protection?
Unlike general-purpose Zener diodes, the SZNUP2115LT1G features a PN junction optimized for high peak energy absorption (200 W @ 8/20 µs) rather than steady-state voltage regulation. Its design ensures low clamping impedance during transients while maintaining <100 nA leakage at 24 V - critical for protecting sensitive FlexRay transceivers without affecting DC bias conditions.
Can the SZNUP2115LT1G be used for CAN FD or other high-speed automotive buses?
The SZNUP2115LT1G is specified and validated for FlexRay (24 V VRWM, 10 Mbps), but its 24 V VRWM, ≤10 pF capacitance, and IEC/ISO compliance make it technically suitable for CAN FD physical layer protection where bus voltage and speed align. However, onsemi positions it explicitly for FlexRay; use for CAN FD requires validation against specific OEM test plans.
SZNUP2115LT1G 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:
- -
- Bidirectional Channels:
- 2
- Voltage - Reverse Standoff (Typ):
- 24V (Min)
- Voltage - Breakdown (Min):
- 26.2V
- Voltage - Clamping (Max) @ Ipp:
- 50V
- Current - Peak Pulse (10/1000µs):
- 3A (8/20µs)
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 10pF @ 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)
SZNUP2115LT1G FAQ
1.How can I place an order for SZNUP2115LT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZNUP2115LT1G 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 SZNUP2115LT1G reliable?
The price and inventory of SZNUP2115LT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZNUP2115LT1G is usually 5 days.
3.What payment methods are accepted for SZNUP2115LT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZNUP2115LT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZNUP2115LT1G?
SZNUP2115LT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZNUP2115LT1G 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 SZNUP2115LT1G?
For technical support, including SZNUP2115LT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZNUP2115LT1G requirements.
6.How does Aetrix verify that SZNUP2115LT1G is sourced from the original manufacturer or authorized distributors?
All SZNUP2115LT1G 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 SZNUP2115LT1G meets industry standards.
7.What is the process for return or replacement of SZNUP2115LT1G?
All SZNUP2115LT1G units undergo pre-shipment inspection (PSI). If there is an issue with SZNUP2115LT1G, 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 SZNUP2115LT1G part is unused and in its original packaging.
Return procedure for SZNUP2115LT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZNUP2115LT1G Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
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ESD5Z3.3T1G
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D5V0H1B2LP-7B
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D5V0P1B2LP-7B
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DESD5V0U1BA-7
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ESD5Z5.0T1G
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
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