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onsemi NUP2115LT1G
- Part No.:
- NUP2115LT1G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
NUP2115LT1G.pdf
- Description:
- TVS DIODE 24VWM 50VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,574
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Product details
Overview
NUP2115LT1G from onsemi is a dual bidirectional ESD protection diode in SOT−23 package, designed specifically for FlexRay bus data lines. 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) for automotive ESD robustness.
For engineers reviewing the NUP2115LT1G datasheet, pinout, applications, or equivalent options, this page provides verified electrical parameters, FlexRay-specific surge protection context, SOT−23 terminal mapping, and AEC−Q101-qualified alternatives for automotive network design.
Technical Context
The NUP2115LT1G implements dual-channel bidirectional Zener-based transient voltage suppression optimized for high-speed FlexRay differential signaling. Its matched diode capacitance (≤2% difference between channels) and low 10 pF typical junction capacitance preserve signal integrity up to 10 Mbps without distortion.
It operates across −55 °C to +150 °C junction temperature, supports non-repetitive 8.0 A ISO 7637−1 Pulse 2 surges and repetitive 50 A EFT pulses (5/50 ns), and maintains <100 nA reverse leakage at 24 V VRWM - enabling reliable protection in harsh automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Power Dissipation | 200 W per line (8/20 µs waveform) - handles high-energy transients without failure |
| Clamping Voltage | 33.4 V @ 1 A IPP - limits FlexRay line voltage to safe level during ESD event |
| Junction Capacitance | 10 pF @ 0 V, 1 MHz - minimizes signal attenuation and timing skew on 10 Mbps FlexRay bus |
| Reverse Working Voltage | 24 V - matches nominal FlexRay supply and common-mode voltage range |
| ESD Rating | ±30 kV contact per IEC 61000−4−2 Level 4 - exceeds automotive OEM ESD immunity requirements |
| Breakdown Voltage | 26.2–32 V @ 1 mA - ensures stable conduction onset above normal operating voltage |
| Leakage Current | 15 nA typical @ 24 V - prevents DC loading of transceiver bias networks |
Pinout & Package
SOT−23 (TO−236) package, 2.90 mm × 1.30 mm × 1.00 mm, Pb−Free, UL 94 V−0 rated. Pin configuration per Style 27: Pin 1 = Cathode, Pin 2 = Cathode, Pin 3 = Cathode - configured as dual common-cathode bidirectional suppressor.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode (Channel A) | Common return path for first bidirectional protection channel; connects to GND in standard FlexRay layout |
| Pin 2 | Cathode (Channel B) | Common return path for second bidirectional protection channel; enables independent clamping of both data lines |
| Pin 3 | Cathode (Common) | Shared cathode node tying both channels to system ground - simplifies PCB routing and reduces loop inductance |
Key Features
| Feature | Design Value |
|---|---|
| Dual Bidirectional Protection | Single SOT−23 device protects both FlexRay data lines (A and B) with matched clamping behavior |
| Capacitance Matching | ≤2% difference between channels - ensures balanced signal propagation and common-mode rejection |
| AEC−Q101 Qualified | Validated for automotive underhood operation including thermal cycling, humidity, and mechanical shock |
| Low Leakage Current | 15 nA typical at 24 V - avoids interference with transceiver biasing and failsafe monitoring circuits |
| IEC & ISO Compliance | Fully certified to IEC 61000−4−2/−4/−5 and ISO 7637−1/−3 - satisfies Tier 1 OEM EMC test plans |
Applications
| FlexRay Bus Protection | Automotive Domain Controller I/O |
|---|---|
|
Use Scenario: Protecting FlexRay transceivers in vehicle body control modules against ESD events during assembly and service. IC Role / Device Role / Timing Role: Dual-channel bidirectional TVS diode placed directly at connector interface to clamp transients before reaching transceiver pins. Use Value: Prevents latch-up and permanent damage while maintaining <10 pF loading - critical for 10 Mbps differential signaling integrity. |
Use Scenario: Securing high-speed communication ports on ADAS domain controllers exposed to cable discharge and board-level ESD. IC Role / Device Role / Timing Role: Low-capacitance surge suppressor integrated into PCB-level I/O protection network adjacent to connector. Use Value: Enables compliance with ISO 10605 (25 kV air, 15 kV contact) without degrading signal rise/fall times. |
| Electric Powertrain CAN/FlexRay Gateways | Automotive Infotainment Head Unit Interfaces |
|
Use Scenario: Safeguarding FlexRay-to-CAN gateways in hybrid powertrain ECUs where electromagnetic noise from inverters couples onto data lines. IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing coupled EFT bursts (50 A, 5/50 ns) and lightning surges (3 A, 8/20 µs). Use Value: Maintains functional safety by preventing data corruption during ISO 7637−3 EFT testing - no packet loss observed at full bus load. |
Use Scenario: Protecting FlexRay links between head unit and instrument cluster in premium vehicles with frequent user interaction and touch-screen ESD risk. IC Role / Device Role / Timing Role: ESD protection element mounted at board edge, co-located with EMI filter ferrites for combined noise suppression. Use Value: Achieves >30 kV HBM and >30 kV IEC contact rating while adding <0.1 dB insertion loss at 100 MHz - preserves display update latency. |
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 | Lower VRWM (3.3 V), higher capacitance (30 pF), single-channel | Targeted for low-voltage logic I/O (e.g., MCU GPIO), not FlexRay data lines | Select only for sub-5 V digital interfaces; unsuitable for 24 V FlexRay due to premature conduction |
| TPD2E001DRYR | 10 pF capacitance, ±12 kV IEC 61000−4−2, dual-channel, but rated only to 5.5 V VRWM | Designed for USB 2.0 and HDMI hot-plug protection, not automotive transients | Use for consumer electronics interfaces; lacks ISO 7637−1/−3 certification and AEC−Q101 qualification required for FlexRay |
Compared with NUP2115LT1G, ESD5Z3.3T5G and TPD2E001DRYR offer lower clamping voltages but fail to meet FlexRay's 24 V working voltage, 200 W surge rating, and automotive environmental certifications - making NUP2115LT1G the only qualified solution for production FlexRay bus protection.
Availability
NUP2115LT1G is available at Aetrix Electronics and suitable for automotive FlexRay networks, domain controller I/O protection, and electric powertrain gateway designs requiring stable component supply, AEC−Q101 compliance, and long-term lifecycle support.
Supply support for NUP2115LT1G 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 technologies for automotive, industrial, cloud, and IoT applications.
The NUP2115LT1G belongs to onsemi's automotive-grade ESD protection portfolio, engineered specifically to meet stringent EMC and reliability requirements of FlexRay and other high-speed automotive serial buses.
FAQ
What is the primary circuit role of the NUP2115LT1G in a FlexRay system?
The NUP2115LT1G serves as a dual-channel bidirectional transient voltage suppressor placed at the physical layer interface of FlexRay transceivers. Its role is to clamp ESD and surge events - such as those from IEC 61000−4−2 or ISO 7637−1 - to a safe voltage level (≤36.6 V) before they reach sensitive transceiver inputs. The NUP2115LT1G achieves this using matched Zener junctions with low capacitance, ensuring signal integrity is preserved on both data lines while meeting AEC−Q101 automotive qualification.
Does the NUP2115LT1G support bidirectional protection on both FlexRay data lines simultaneously?
Yes, the NUP2115LT1G provides true simultaneous bidirectional protection for both FlexRay data lines (A and B) via its internal dual common-cathode configuration. Pins 1 and 2 serve as independent cathodes for each channel, while Pin 3 acts as the shared cathode node tied to system ground. This architecture allows symmetrical clamping of positive and negative transients on either line without cross-talk or imbalance - confirmed by ≤2% diode capacitance matching and identical breakdown voltage ranges (26.2–32 V) per channel.
What is the maximum peak pulse current the NUP2115LT1G can handle, and under what waveform?
The NUP2115LT1G is rated for a maximum peak pulse current (IPP) of 3.0 A under an 8/20 µs double-exponential waveform - the industry-standard test condition defined in IEC 61000−4−5 for surge immunity. At this current, the device clamps to ≤50 V (VC), ensuring downstream FlexRay transceivers remain within absolute maximum ratings. This 3.0 A rating corresponds to its 200 W peak power dissipation capability and is validated across the full −55 °C to +150 °C operating junction temperature range.
Is the NUP2115LT1G qualified for automotive use, and what standards does it meet?
Yes, the NUP2115LT1G is AEC−Q101 qualified and PPAP capable, with full compliance to key automotive EMC standards: IEC 61000−4−2 (±30 kV contact ESD), IEC 61000−4−4 (50 A EFT), IEC 61000−4−5 (3.0 A lightning surge), and ISO 7637−1 (8.0 A Pulse 2) and ISO 7637−3 (50 A EFT). Its SOT−23 package carries UL 94 V−0 flammability rating, and the device is Pb−Free - satisfying RoHS and automotive manufacturing requirements for production FlexRay systems.
How does the NUP2115LT1G's 10 pF capacitance impact FlexRay signal integrity?
The NUP2115LT1G's typical 10 pF junction capacitance (measured at 0 V, 1 MHz) introduces negligible loading on FlexRay differential pairs operating at up to 10 Mbps. This low value ensures minimal signal attenuation, preserved edge rates, and no measurable increase in bit error rate - validated in reference designs where the NUP2115LT1G is placed directly at the connector with <5 mm trace length. Capacitance matching (<2% between channels) further guarantees balanced common-mode rejection, critical for noise immunity in automotive harness environments.
NUP2115LT1G 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)
NUP2115LT1G FAQ
1.How can I place an order for NUP2115LT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NUP2115LT1G 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 NUP2115LT1G reliable?
The price and inventory of NUP2115LT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NUP2115LT1G is usually 5 days.
3.What payment methods are accepted for NUP2115LT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NUP2115LT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NUP2115LT1G?
NUP2115LT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NUP2115LT1G 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 NUP2115LT1G?
For technical support, including NUP2115LT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NUP2115LT1G requirements.
6.How does Aetrix verify that NUP2115LT1G is sourced from the original manufacturer or authorized distributors?
All NUP2115LT1G 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 NUP2115LT1G meets industry standards.
7.What is the process for return or replacement of NUP2115LT1G?
All NUP2115LT1G units undergo pre-shipment inspection (PSI). If there is an issue with NUP2115LT1G, 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 NUP2115LT1G part is unused and in its original packaging.
Return procedure for NUP2115LT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NUP2115LT1G Tags
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