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onsemi NUP1105LT3G
- Part No.:
- NUP1105LT3G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
NUP1105LT3G.pdf
- Description:
- TVS DIODE 24VWM 44VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,001
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Product details
Overview
NUP1105LT3G from onsemi is a bidirectional ESD protection diode in SOT-23 package, designed specifically for LIN and single-line CAN bus transceivers. It delivers 350 W peak power dissipation (8 × 20 µs), clamps at 40 V @ 5 A, and exhibits ≤100 nA reverse leakage at 24 V, meeting IEC 61000-4-2 Level 4 and ISO 7637-1/3 surge requirements for automotive networks.
For engineers reviewing the NUP1105LT3G datasheet, pinout, applications, or equivalent options, this page provides verified electrical parameters, validated SOT-23 terminal mapping, automotive-grade EMI/ESD compliance details, and direct alternative part comparisons for LIN/CAN bus protection design.
Technical Context
The NUP1105LT3G implements dual-anode-to-cathode Zener-based transient voltage suppression in a single SOT-23 device, enabling symmetrical bidirectional clamping on one data line. Its architecture supports fast response to ESD events (≤1 ns) and repetitive EFT pulses per IEC 61000-4-4 (40 A, 5/50 ns).
It operates across −55 °C to +150 °C junction temperature, with 24 V reverse working voltage (VRWM) and 25.7–28.4 V breakdown (VBR @ 1 mA), ensuring compatibility with 12 V automotive supply rails and LIN/CAN signaling levels without false triggering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Power Dissipation | 350 W (8 × 20 µs waveform); sustains high-energy transients without failure in automotive surge environments |
| Reverse Working Voltage (VRWM) | 24 V; matches nominal LIN/CAN bus operating voltage, preventing conduction during normal signal swing |
| Clamping Voltage (VC) | 40 V @ 5 A; limits induced overvoltage to safe levels for downstream transceiver ICs |
| Breakdown Voltage (VBR) | 25.7–28.4 V @ 1 mA; ensures reliable turn-on before damage threshold of protected circuitry |
| Capacitance (CJ) | 60 pF (anode-to-GND); low enough to avoid signal integrity degradation on LIN (up to 20 kbps) and single-line CAN |
| ESD Rating | ±30 kV contact discharge (IEC 61000-4-2 Level 4); exceeds automotive OEM requirements for human-hand ESD immunity |
| Operating Temperature | −55 °C to +150 °C; qualified for under-hood and body-control module deployment |
Pinout & Package
SOT-23 (TO-236) package, 2.90 mm × 1.30 mm × 1.00 mm, case 318, style 27, marked "27HM" - Pb-free, RoHS compliant, UL 94 V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | First bidirectional clamping path; connects to LIN/CAN data line |
| Pin 2 | Anode | Second anode tied internally to Pin 1; enables symmetrical bidirectional protection |
| Pin 3 | Cathode | Common reference node; connected to system ground or local chassis return |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Zener Clamping | Single-device protection for both positive and negative transients on one data line-no external polarity selection needed |
| Low Capacitance (60 pF) | Preserves signal rise/fall times on LIN (20 kbps) and single-line CAN without distortion or timing skew |
| AEC-Q101 Qualified | Validated for automotive use including thermal cycling, humidity, and mechanical shock per stress test requirements |
| IEC 61000-4-4 EFT Immunity | Withstands 40 A, 5/50 ns fast transients-critical for robustness in electrically noisy vehicle subsystems |
| Pb-Free & RoHS Compliant | Meets global environmental regulations and solder-reflow compatibility for lead-free assembly processes |
Applications
| LIN Bus Protection | Single-Line CAN Protection |
|---|---|
|
Use Scenario: Protecting LIN slave nodes (e.g., door modules, seat controls) from ESD during service or assembly. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed between LIN transceiver and connector interface. Use Value: Limits clamping voltage to 40 V at 5 A, preventing latch-up or damage to LIN PHY while maintaining <60 pF loading. |
Use Scenario: Safeguarding fault-tolerant single-wire CAN systems in body electronics where cost and space are constrained. IC Role / Device Role / Timing Role: Primary ESD/surge clamp on the CAN data line, referenced to chassis ground. Use Value: Delivers 350 W peak power handling and passes IEC 61000-4-5 (8 A, 8/20 µs), enabling compliance with OEM surge specs. |
| Smart Distribution Systems (SDS®) | DeviceNet™ Networks |
|
Use Scenario: Transient protection for SDS® smart actuators in HVAC and lighting control panels exposed to industrial EFT. IC Role / Device Role / Timing Role: Line-side TVS on bidirectional serial communication link between controller and distributed node. Use Value: Supports repetitive EFT per IEC 61000-4-4 (40 A) and maintains ≤100 nA leakage at 24 V for low-power standby operation. |
Use Scenario: ESD hardening of DeviceNet™ master/slave ports in factory automation equipment subject to frequent cable hot-plug events. IC Role / Device Role / Timing Role: Interface-level protector mounted adjacent to DeviceNet™ transceiver IC input/output pins. Use Value: Provides ±30 kV contact ESD immunity (IEC 61000-4-2 Level 4), exceeding DeviceNet™ physical layer immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD1E05U06DPYR | Lower clamping voltage (12 V @ 1 A), lower capacitance (0.5 pF), but only 120 W peak power (8 × 20 µs) | Better suited for high-speed digital lines (USB, I²C); insufficient for automotive surge energy (IEC 61000-4-5 8 A) | Select only for non-automotive, low-energy interfaces requiring ultra-low capacitance |
| SMF24A | Unidirectional, higher VRWM (24 V), same VBR range, but no AEC-Q101 qualification and 200 W peak power | Lacks bidirectional symmetry and automotive qualification; requires external series resistor for LIN/CAN | Acceptable for industrial LIN where AEC-Q101 is not mandated and layout allows unidirectional configuration |
Compared with TPD1E05U06DPYR and SMF24A, the NUP1105LT3G uniquely combines AEC-Q101 qualification, 350 W surge rating, bidirectional clamping, and 24 V VRWM in SOT-23-making it the only drop-in solution for production automotive LIN and single-line CAN bus protection.
Availability
NUP1105LT3G is available at Aetrix Electronics and suitable for automotive electronics, industrial control networks, and smart distribution systems requiring stable component supply despite its discontinued status through legacy channel sourcing and lifecycle management support.
Supply support for NUP1105LT3G 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 focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, and IoT applications.
The NUP1105LT3G belongs to onsemi's automotive-grade ESD protection portfolio, engineered specifically to meet stringent IEC/ISO surge immunity and AEC-Q101 reliability requirements for LIN and single-line CAN bus interfaces.
FAQ
Is NUP1105LT3G still in production?
No, the NUP1105LT3G is officially marked as discontinued by onsemi per revision 8 of the datasheet (January 2026). However, Aetrix Electronics maintains access to remaining inventory and legacy channel stock with full traceability, supporting ongoing production and repair programs until final obsolescence.
What is the pin configuration of NUP1105LT3G?
The NUP1105LT3G uses SOT-23 package style 27: Pin 1 = Anode, Pin 2 = Anode, Pin 3 = Cathode. This dual-anode configuration enables true bidirectional clamping on a single data line without external polarity components-confirmed in the onsemi datasheet Figure 1 and mechanical outline.
Does NUP1105LT3G meet AEC-Q101 requirements?
Yes, the NUP1105LT3G is AEC-Q101 qualified and PPAP capable, as explicitly stated in the onsemi datasheet features section. This qualification covers temperature cycling, mechanical shock, ESD, and accelerated life testing required for automotive under-hood and body electronics deployment.
Can NUP1105LT3G be used for standard two-wire CAN FD?
No, the NUP1105LT3G is specified only for LIN and single-line CAN applications. Its 60 pF capacitance and clamping behavior are optimized for lower-speed, single-ended buses-not for high-speed, differential CAN FD (up to 5 Mbps), which requires dedicated differential TVS arrays like NUP2114.
What is the maximum peak pulse current rating for NUP1105LT3G?
The NUP1105LT3G is rated for 8.0 A maximum peak pulse current under the 8 × 20 µs waveform, as specified in the Electrical Characteristics table. This value corresponds directly to its 350 W peak power rating and validates its capability to handle ISO 7637-3 EFT and IEC 61000-4-5 lightning surge events.
NUP1105LT3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 24V (Min)
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 44V
- Current - Peak Pulse (10/1000µs):
- 8A (8/20µs)
- Power - Peak Pulse:
- 350W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 60pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3 (TO-236)
NUP1105LT3G FAQ
1.How can I place an order for NUP1105LT3G through Aetrix?
Please submit a Request for Quotation (RFQ) for NUP1105LT3G 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 NUP1105LT3G reliable?
The price and inventory of NUP1105LT3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NUP1105LT3G is usually 5 days.
3.What payment methods are accepted for NUP1105LT3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NUP1105LT3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NUP1105LT3G?
NUP1105LT3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NUP1105LT3G 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 NUP1105LT3G?
For technical support, including NUP1105LT3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NUP1105LT3G requirements.
6.How does Aetrix verify that NUP1105LT3G is sourced from the original manufacturer or authorized distributors?
All NUP1105LT3G 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 NUP1105LT3G meets industry standards.
7.What is the process for return or replacement of NUP1105LT3G?
All NUP1105LT3G units undergo pre-shipment inspection (PSI). If there is an issue with NUP1105LT3G, 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 NUP1105LT3G part is unused and in its original packaging.
Return procedure for NUP1105LT3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NUP1105LT3G Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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