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onsemi SESDONCAN1LT1G
- Part No.:
- SESDONCAN1LT1G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SESDONCAN1LT1G.pdf
- Description:
- TVS DIODE 24VWM 50VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:11,520
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Product details
Overview
SESDONCAN1LT1G from onsemi is a dual bidirectional ESD protection diode in SOT-23 package, designed specifically for CAN and CAN-FD bus lines. It provides 24 V working peak reverse voltage, 32 V breakdown voltage (min), 44 V clamping voltage at 3 A, 10 pF line-to-GND capacitance, and meets IEC 61000-4-2 Level 4 (±23 kV contact) for automotive and industrial networks.
For engineers reviewing the SESDONCAN1LT1G datasheet, pinout, applications, or equivalent options, this device serves as a compact, AEC-Q101-qualified transient suppressor for high-speed CAN physical layer protection where low capacitance, precise clamping, and bidirectional surge immunity are critical to signal integrity and system reliability.
Technical Context
The SESDONCAN1LT1G implements Zener-based bidirectional voltage suppression across two independent CAN data lines (CANH/CANL), with matched diode capacitance (≤2%) enabling balanced high-speed signal integrity. Its clamping behavior is characterized using both 8/20 µs surge waveforms and Transmission Line Pulse (TLP) testing up to 20 A, confirming stable turn-on at ≥26.2 V and sub-50 V clamping at 3 A.
It operates over −55 °C to +150 °C junction temperature, supports Pb-free reflow (260 °C/10 s), and is qualified to AEC-Q101 with PPAP capability-making it suitable for automotive ECUs and industrial CAN nodes requiring robust EMI/ESD resilience without degrading bit-rate performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 24 V - Ensures reliable operation without leakage during normal CAN bus DC bias (±12 V differential, ~24 V common-mode max). |
| VBR (min) | 26.2 V - Guarantees early conduction before transceiver damage threshold under fast transients. |
| VC @ 3 A | 44 V - Limits peak voltage seen by CAN transceiver during 3 A 8/20 µs surge, preserving ISO 11898-2 compliance. |
| CJ (line–GND) | 10 pF - Minimizes signal distortion and insertion loss (<1 dB at 5 GHz), supporting CAN FD up to 5 Mbps. |
| IR @ VRWM | ≤100 nA - Prevents measurable bus loading or offset drift in low-power wake-up or sleep modes. |
| IEC 61000-4-2 | ±23 kV contact - Exceeds automotive OEM requirements for ESD immunity on exposed harness connectors. |
| ISO 7637-3 EFT | 50 A (5/50 ns) - Withstands repetitive burst noise in vehicle powertrain and body control modules. |
Pinout & Package
SOT-23 (TO-236) package, 2.90 mm × 1.30 mm × 1.00 mm, 3-pin surface-mount, Pb-free, marked "25EM".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode (Line 1) | Connects to CANH or CANL - forms one leg of bidirectional clamp path to GND. |
| Pin 2 | Cathode (Line 2) | Connects to complementary CAN line - enables symmetrical dual-line protection in single footprint. |
| Pin 3 | Anode (Common GND) | Shared ground reference for both clamping paths; must be low-inductance connection to system GND plane. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Zener Clamping | Enables identical positive/negative transient suppression on CANH and CANL without polarity constraints. |
| Capacitance Matching ≤2% | Maintains differential signal symmetry and minimizes skew-induced jitter in high-speed CAN FD links. |
| 150 W Peak Power (8×20 µs) | Handles repeated EFT bursts and lightning-surge energy without degradation in automotive gateways. |
| AEC-Q101 Qualified | Validated for automotive underhood and chassis applications per stress test conditions including HTGB, TCT, and HTRB. |
| Low Leakage (≤100 nA) | Eliminates false wake-up or bus contention in ultra-low-power CAN partial networking (PN) modes. |
Applications
| Automotive CAN FD Node | Industrial DeviceNet Interface |
|---|---|
Use Scenario: Protection of CAN FD transceiver (e.g., TCAN1042) in ADAS domain controller exposed to connector-level ESD and load dump coupling. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed between connector and transceiver pins, operating transparently during 5 Mbps data transmission. Use Value: Maintains <1 dB insertion loss at 5 GHz while clamping surges to ≤44 V, preventing transceiver latch-up and ensuring ISO 11898-2 compliance. | Use Scenario: ESD hardening of DeviceNet slave node in factory automation panel with long cable runs and unshielded wiring. IC Role / Device Role / Timing Role: Dual-line surge protector on differential pair, referenced to chassis ground, enabling robust operation in electrically noisy PLC environments. Use Value: Delivers ±23 kV IEC 61000-4-2 contact immunity and 50 A ISO 7637-3 EFT tolerance without adding propagation delay or signal attenuation. |
| Smart Distribution System (SDS) | Heavy-Duty Vehicle Control Network |
Use Scenario: CAN bus protection in Honeywell SDS lighting controllers deployed in outdoor parking structures subject to lightning-induced surges. IC Role / Device Role / Timing Role: Primary ESD/surge guard on CANH/CANL lines upstream of isolated signal conditioning stage. Use Value: Withstands 3.0 A (8/20 µs) lightning surge per IEC 61000-4-5 and maintains 10 pF capacitance to avoid resonance with 120 Ω termination. | Use Scenario: Protection of J1939-compliant engine control module in off-highway equipment operating in extreme temperature (-40 °C to +125 °C ambient). IC Role / Device Role / Timing Role: AEC-Q101-qualified transient suppressor mounted directly at connector interface, sharing GND with CAN transceiver. Use Value: Operates reliably from −55 °C to +150 °C junction temperature and passes 8.0 A non-repetitive pulse (ISO 7637-1 Pulse 2) without parametric shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NUP2114MR6T1G | Single-channel, 12 V VRWM, 15 V VBR, 22 V VC @ 1 A - lower voltage rating and no capacitance matching spec. | Targeted at 12 V LIN or low-speed CAN; insufficient for 24 V CAN FD common-mode margin. | Select only for cost-sensitive 12 V systems where full CAN FD compliance is not required. |
| TPD2E001DRYR | 2-channel, 5 V VRWM, 6.5 V VBR, 12 pF CJ - optimized for USB/I²C, not CAN bus voltage levels. | Designed for consumer electronics interfaces; lacks ISO 7637-3 and AEC-Q101 qualification. | Not recommended for automotive or industrial CAN; use only in non-automotive embedded microcontroller I/O protection. |
Compared with NUP2114MR6T1G and TPD2E001DRYR, the SESDONCAN1LT1G uniquely combines 24 V VRWM, matched 10 pF capacitance, AEC-Q101 qualification, and CAN-FD-specific clamping performance-making it the only drop-in solution for high-reliability CAN physical layer protection.
Availability
SESDONCAN1LT1G is available at Aetrix Electronics and suitable for automotive ECUs, industrial DeviceNet nodes, smart distribution systems, and heavy-duty vehicle control networks requiring stable component supply and long-term lifecycle support.
Supply support for SESDONCAN1LT1G 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 innovation for automotive, industrial, cloud, and IoT applications.
The SESDONCAN1LT1G belongs to onsemi's CAN/CAN-FD Bus Protector family, engineered specifically to meet stringent ESD, EFT, and surge immunity requirements of modern automotive and industrial serial communication networks.
FAQ
What is the primary function of the SESDONCAN1LT1G in a CAN bus system?
The SESDONCAN1LT1G functions as a dual bidirectional ESD and surge protection diode for CANH and CANL lines. It clamps transient voltages-such as those from ESD events or inductive switching-to safe levels (e.g., ≤44 V at 3 A) while maintaining low capacitance (10 pF) to preserve signal integrity. This ensures CAN transceivers remain operational during harsh electrical disturbances without compromising bit-rate performance in CAN FD networks.
Does the SESDONCAN1LT1G support CAN FD data rates up to 5 Mbps?
Yes, the SESDONCAN1LT1G supports CAN FD up to 5 Mbps due to its 10 pF line-to-GND capacitance, ≤2% capacitance matching between channels, and <1 dB insertion loss at 5 GHz. These parameters prevent signal distortion, timing skew, and resonance with standard 120 Ω termination, enabling clean differential signaling essential for high-speed CAN FD operation.
Is the SESDONCAN1LT1G qualified for automotive applications?
Yes, the SESDONCAN1LT1G carries the "S" prefix indicating AEC-Q101 qualification and PPAP capability. It has been tested per automotive stress standards including HTGB, TCT, and HTRB, and meets ISO 7637-1 (8.0 A surge), ISO 7637-3 (50 A EFT), and IEC 61000-4-2 (±23 kV contact), making it suitable for under-hood and chassis-mounted CAN nodes.
What is the meaning of the marking "25EM" on the SESDONCAN1LT1G package?
The marking "25EM" on the SESDONCAN1LT1G indicates device code "25E", date code "M", and Pb-free packaging. Per onsemi's SOT-23 marking convention (Style 27), Pin 1 is cathode (CANH side), Pin 2 is cathode (CANL side), and Pin 3 is the common anode tied to system ground-enabling correct orientation during automated placement and inspection.
How does the SESDONCAN1LT1G differ from generic TVS diodes like SMAJ24A?
Unlike general-purpose unidirectional TVS diodes such as SMAJ24A, the SESDONCAN1LT1G is a dual bidirectional Zener device with matched capacitance (≤2%), AEC-Q101 qualification, and CAN-FD-optimized clamping (44 V @ 3 A). SMAJ24A lacks capacitance matching, has higher clamping voltage (~48 V), and is not rated for CAN FD signal integrity or automotive EFT immunity-making it unsuitable as a direct replacement for SESDONCAN1LT1G in high-speed automotive networks.
SESDONCAN1LT1G 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:
- -
- Power Line Protection:
- No
- Applications:
- CAN
- 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)
SESDONCAN1LT1G FAQ
1.How can I place an order for SESDONCAN1LT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SESDONCAN1LT1G 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 SESDONCAN1LT1G reliable?
The price and inventory of SESDONCAN1LT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SESDONCAN1LT1G is usually 5 days.
3.What payment methods are accepted for SESDONCAN1LT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SESDONCAN1LT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SESDONCAN1LT1G?
SESDONCAN1LT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SESDONCAN1LT1G 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 SESDONCAN1LT1G?
For technical support, including SESDONCAN1LT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SESDONCAN1LT1G requirements.
6.How does Aetrix verify that SESDONCAN1LT1G is sourced from the original manufacturer or authorized distributors?
All SESDONCAN1LT1G 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 SESDONCAN1LT1G meets industry standards.
7.What is the process for return or replacement of SESDONCAN1LT1G?
All SESDONCAN1LT1G units undergo pre-shipment inspection (PSI). If there is an issue with SESDONCAN1LT1G, 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 SESDONCAN1LT1G part is unused and in its original packaging.
Return procedure for SESDONCAN1LT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SESDONCAN1LT1G Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
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DESD5V0U1BA-7
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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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