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Diodes Incorporated DESD1FLEX2SOQ-7
- Part No.:
- DESD1FLEX2SOQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DESD1FLEX2SOQ-7.pdf
- Description:
- TVS DIODE 24VWM 70VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,990
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Product details
Overview
DESD1FLEX2SOQ from Diodes Incorporated is a dual-channel AEC-Q101-qualified ESD protection diode for automotive FlexRay bus lines, featuring 25.4V breakdown voltage, 3A peak pulse current (8/20µs), 11pF typical channel capacitance, ±30kV IEC 61000-4-2 contact/air ESD rating, and SOT23 package. It protects high-speed differential FlexRay transceivers in vehicle communication networks.
For engineers reviewing the DESD1FLEX2SOQ datasheet, DESD1FLEX2SOQ pinout, DESD1FLEX2SOQ application, or DESD1FLEX2SOQ equivalent, key selection criteria include channel-to-channel capacitance matching (≤0.12% ΔCT), low leakage (<50nA at 24V), clamping voltage (70V at 3A), and automotive-grade qualification with PPAP support.
Technical Context
This device implements bidirectional TVS architecture per channel to clamp transient overvoltages on FlexRay differential pairs without distorting signal integrity. Its low 11pF typical capacitance and tight 0.02–0.34pF inter-channel capacitance mismatch preserve >10Mbps FlexRay signaling fidelity.
Designed for placement directly at connector or transceiver I/O pins, it operates across –65°C to +150°C and dissipates up to 200W per channel under 8/20µs surge events while maintaining <1µA leakage below 24V reverse standoff.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 25.4V min - ensures reliable triggering above FlexRay common-mode range (±2.5V) and below transceiver ABS max ratings. |
| Clamping Voltage (VCL) | 70V at 3A - limits transient voltage seen by downstream FlexRay PHY during 8/20µs surges. |
| Channel Capacitance (CT) | 11pF typ at 0V - maintains signal rise/fall time integrity for 10Mbps differential bus operation. |
| ESD Rating | ±30kV contact/air per IEC 61000-4-2 - exceeds automotive OEM ESD immunity requirements for external interfaces. |
| Peak Pulse Power | 200W per channel - sustains robust protection against ISO 7637-3 coupled transients in vehicle harnesses. |
| Leakage Current (IRM) | <50nA at 24V - avoids loading bias networks or degrading common-mode rejection in differential receivers. |
Pinout & Package
Package: SOT23 - surface-mount, 3-pin plastic case (2.4mm × 1.3mm × 1.0mm), moisture sensitivity level 1, lead-free matte tin plating, UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Channel 1 Anode | Connects to FlexRay CH0 line; forms cathode-to-rail clamp path for negative transients. |
| Pin 2 | Cathode (Common) | Shared cathode tied to ground plane; enables bidirectional clamping for both channels. |
| Pin 3 | Channel 2 Anode | Connects to FlexRay CH1 line; symmetric clamping path with Pin 1 for differential protection. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified & PPAP capable | Validated for automotive production use in IATF 16949-certified facilities with full change control traceability. |
| Dual-channel matched capacitance | 0.12% max capacitance mismatch between channels preserves FlexRay differential signal skew & jitter performance. |
| Low-leakage TVS architecture | <50nA IR at VRWM = 24V prevents DC loading of bias resistors in FlexRay termination networks. |
| Green, halogen/antimony-free | Meets RoHS 3 (2015/863/EU) with Br+Cl <1500ppm and Sb <1000ppm - compliant for global automotive supply chains. |
Applications
| FlexRay Vehicle Network Node | Automotive Gateway Module |
|---|---|
Use Scenario: Protecting FlexRay transceiver I/O pins in body control modules exposed to harness-induced ESD and load dump. IC Role / Device Role / Timing Role: Dual-channel bidirectional TVS diode placed at board edge before transceiver input pins. Use Value: Maintains signal integrity at 10Mbps while clamping 30kV ESD strikes and 200W surges without latch-up or degradation. | Use Scenario: Safeguarding FlexRay interface in central gateway units connecting powertrain, chassis, and infotainment domains. IC Role / Device Role / Timing Role: Common-cathode dual TVS providing symmetrical protection for differential CH0/CH1 lines. Use Value: Enables compliance with ISO 10605 and OEM-specific EMC test plans due to matched channel capacitance and low leakage. |
| ADAS Sensor Fusion Hub | Electric Powertrain Control Unit |
Use Scenario: Shielding FlexRay links between radar/EoL sensor clusters and domain controllers in autonomous driving systems. IC Role / Device Role / Timing Role: High-reliability ESD guard at connector interface, operating continuously from –40°C to +125°C ambient. Use Value: Prevents false resets or data corruption during roadside ESD events while sustaining thermal stability across extended temperature range. | Use Scenario: Protecting FlexRay communication between inverter control and battery management systems in BEV platforms. IC Role / Device Role / Timing Role: Automotive-grade transient suppressor mounted adjacent to transceiver IC on high-vibration motor control PCB. Use Value: Survives mechanical shock and thermal cycling per AEC-Q200 while delivering consistent 70V clamping at 3A surge current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel automotive ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SP1006-02HTG | Higher CT (15pF typ), lower VBR (17V), same SOT23-3 package | Better suited for CAN FD (5Mbps) than FlexRay (10Mbps) due to higher capacitance and lower standoff | Select only if system operates below 20V rail and prioritizes cost over speed fidelity. |
| ESD7L5.0DT5G | Single-channel, 5V VBR, 12pF CT, SOD-523 package | Requires two devices per FlexRay pair; lacks AEC-Q101 qualification and PPAP support | Acceptable for non-automotive industrial FlexRay prototypes but not for production vehicle programs. |
Compared with SP1006-02HTG and ESD7L5.0DT5G, DESD1FLEX2SOQ uniquely delivers FlexRay-optimized 25.4V VBR, sub-12pF capacitance, and full automotive qualification - making it the only drop-in solution for OEM-compliant FlexRay node protection.
Availability
DESD1FLEX2SOQ is available at Aetrix Electronics and suitable for automotive FlexRay network nodes, gateway modules, ADAS sensor fusion hubs, and electric powertrain control units requiring stable component supply and long-term lifecycle assurance.
Supply support for DESD1FLEX2SOQ 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, serving automotive, industrial, computing, and consumer markets with a focus on reliability and AEC-Q qualification.
The DESD1FLEX2SOQ belongs to Diodes' automotive-grade ESD protection product line, engineered specifically to meet FlexRay physical layer requirements including low capacitance, matched channels, and high-temperature operation.
FAQ
What is the maximum operating temperature for DESD1FLEX2SOQ?
The DESD1FLEX2SOQ is rated for continuous operation from –65°C to +150°C junction temperature. Its thermal resistance (RθJA) is 417°C/W on standard FR-4 PCB layout, enabling reliable performance in engine bay and powertrain environments without derating up to +125°C ambient.
Does DESD1FLEX2SOQ support bidirectional transient suppression?
Yes - each channel uses a bidirectional TVS structure formed by back-to-back Zener-like junctions. With a common cathode (Pin 2), it clamps positive transients from anode-to-ground and negative transients from ground-to-anode on both CH0 (Pin 1) and CH1 (Pin 3), meeting FlexRay's differential surge immunity needs.
How is channel capacitance matching verified for this device?
Diodes Incorporated measures ∆(CT_Ch1–CT_Ch2)/CTMax across production lots, guaranteeing ≤0.12% mismatch (0.02–0.34pF absolute difference) at 0V and 5MHz. This is validated per DS38646 Rev. 3 test procedure using calibrated LCR meters and statistical process control on wafer and final test.
Can DESD1FLEX2SOQ be used for CAN or LIN bus protection?
No - its 25.4V VBR is optimized for FlexRay's ±2.5V differential swing and 55V bus fault tolerance. For CAN (±40V fault) or LIN (18V max), lower-VBR devices like PESD5V0S1BA (5V) or ESDALC6V1-1M2 (6.1V) provide appropriate clamping and lower capacitance trade-offs.
DESD1FLEX2SOQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- 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 (Max)
- Voltage - Breakdown (Min):
- 25.4V
- Voltage - Clamping (Max) @ Ipp:
- 70V
- Current - Peak Pulse (10/1000µs):
- 3A (8/20µs)
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 11pF @ 5MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DESD1FLEX2SOQ-7 FAQ
1.How can I place an order for DESD1FLEX2SOQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DESD1FLEX2SOQ-7 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 DESD1FLEX2SOQ-7 reliable?
The price and inventory of DESD1FLEX2SOQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DESD1FLEX2SOQ-7 is usually 5 days.
3.What payment methods are accepted for DESD1FLEX2SOQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DESD1FLEX2SOQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DESD1FLEX2SOQ-7?
DESD1FLEX2SOQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DESD1FLEX2SOQ-7 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 DESD1FLEX2SOQ-7?
For technical support, including DESD1FLEX2SOQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DESD1FLEX2SOQ-7 requirements.
6.How does Aetrix verify that DESD1FLEX2SOQ-7 is sourced from the original manufacturer or authorized distributors?
All DESD1FLEX2SOQ-7 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 DESD1FLEX2SOQ-7 meets industry standards.
7.What is the process for return or replacement of DESD1FLEX2SOQ-7?
All DESD1FLEX2SOQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DESD1FLEX2SOQ-7, 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 DESD1FLEX2SOQ-7 part is unused and in its original packaging.
Return procedure for DESD1FLEX2SOQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DESD1FLEX2SOQ-7 Tags
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