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Diodes Incorporated DESD32VS2SO-7
- Part No.:
- DESD32VS2SO-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DESD32VS2SO-7.pdf
- Description:
- TVS DIODE 32VWM 50VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:103,645
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Product details
Overview
DESD32VS2SO-7 from Diodes Incorporated is a bidirectional ESD and surge protection diode designed for LIN and CAN bus data line protection in automotive and industrial networks. It features a 32V reverse working voltage (VRWM), 34V minimum breakdown voltage (VBR), ±30kV IEC 61000-4-2 contact/air ESD rating, 200W peak pulse power (8/20µs), and 36–42pF channel capacitance - enabling robust transient suppression without signal integrity degradation in 1Mbps CAN FD and 20kbps LIN systems.
For engineers reviewing the DESD32VS2SO-7 datasheet, DESD32VS2SO-7 pinout, DESD32VS2SO-7 application, or DESD32VS2SO-7 equivalent, key selection criteria include clamping voltage at 4A (50V), low leakage (<100nA at 32V), AEC-Q101 qualification, SOT23 package compatibility with high-density PCB layouts, and verified performance under EFT (80A) and HBM (±16kV) stress conditions.
Technical Context
This device is a dual-channel unidirectional TVS array configured as two back-to-back Zener diodes between pins 1–3 and 2–3, providing symmetrical clamping for differential bus lines. Its 36–42pF capacitance per channel (measured pin-to-pin 3) ensures minimal signal distortion on LIN/CAN buses operating up to 1Mbps, while the 42V clamping voltage at 1A and 50V at 4A defines its transient energy absorption envelope under standardized 8/20µs surges.
The SOT23-3L package supports automated placement and reflow soldering per J-STD-020 Level 1 moisture sensitivity, with thermal resistance RθJA = 417°C/W on FR-4 (2oz Cu). Its AEC-Q101 qualification confirms operation across –65°C to +150°C junction temperature range, meeting automotive-grade reliability requirements for under-hood and body-control module deployments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 32V - Maximum continuous reverse voltage before leakage exceeds 100nA; sets upper limit for safe operation on 12V automotive CAN/LIN buses. |
| VBR (min) | 34V @ 1mA - Ensures reliable turn-on during transients above system supply rails without false triggering during normal operation. |
| VCL @ 4A | 50V - Clamped voltage during 4A 8/20µs surge; limits stress on downstream CAN/LIN transceivers (e.g., TJA1042, MCP2551). |
| Capacitance (Pin1–3) | 36–42pF @ 1MHz - Low enough to preserve signal edge integrity in 1Mbps CAN FD and 20kbps LIN without added jitter or rise-time degradation. |
| ESD Rating | ±30kV contact/air (IEC 61000-4-2) - Meets ISO 10605 requirements for direct discharge immunity in vehicle assembly and service environments. |
| IPP | 4A @ 8/20µs - Peak current handling capacity aligned with ISO 7637-3 Pulse 2b and 5a surge test profiles for automotive networks. |
| IR @ VRWM | <100nA - Negligible leakage current prevents bus loading or false wake-up in low-power LIN sleep modes. |
Pinout & Package
SOT23-3L package: 2.9mm × 1.3mm × 1.0mm body, matte tin-plated alloy 42 leadframe, UL 94V-0 molding compound, weight 0.009g. Moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | LIN/CAN Data Line A (CAN_H / LIN) | Input terminal for first protected channel; connects to transceiver TX/RX line A. |
| Pin 2 | LIN/CAN Data Line B (CAN_L / GND-referenced) | Input terminal for second protected channel; connects to transceiver TX/RX line B or ground reference point. |
| Pin 3 | Common Cathode / Ground Reference | Shared cathode node tied to system ground; enables dual-channel clamping to earth reference during transients. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel bidirectional protection | Independent clamping paths for both LIN/CAN differential lines using shared cathode architecture - eliminates need for discrete dual-diode arrays and reduces PCB footprint by 40% vs. SO-8 solutions. |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces - guarantees reliability over 15-year vehicle lifetime under thermal cycling and vibration stress. |
| Low 36–42pF channel capacitance | Preserves signal integrity on high-speed CAN FD (up to 5Mbps) and legacy CAN (1Mbps) without requiring trace length compensation or termination adjustments. |
| ±30kV IEC 61000-4-2 ESD rating | Exceeds ISO 10605 Level 4 (±30kV contact) for manufacturing ESD-safe handling and field-level electrostatic discharge immunity in service workshops. |
| Green, halogen-free construction | Meets EU RoHS 2 (2011/65/EU) and automotive ELV Directive; <900ppm Br+Cl, <1000ppm Sb - supports end-of-life recycling and avoids corrosive outgassing in sealed modules. |
Applications
| Automotive CAN Bus Protection | Automotive LIN Bus Protection |
|---|---|
Use Scenario: Protecting CAN_H/CAN_L lines in powertrain ECUs exposed to load dump, jump-start, and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Transient voltage suppressor placed directly at connector interface before CAN transceiver (e.g., NXP TJA1055). Use Value: Limits clamped voltage to ≤50V during 4A surges, preventing latch-up or permanent damage to transceiver silicon while maintaining <1ns response time. | Use Scenario: Shielding LIN slave nodes (e.g., door modules, seat controllers) from ESD events during assembly and service. IC Role / Device Role / Timing Role: ESD clamp mounted adjacent to LIN transceiver input (e.g., Infineon TLE7259-3GE), referenced to chassis ground. Use Value: Absorbs ±30kV contact discharges without degrading 20kbps data timing or inducing false wake-up via leakage current (<100nA). |
| Industrial Control Network Interface | Body Electronics Module Protection |
Use Scenario: Securing RS-485-like differential fieldbus links in factory automation PLCs interfacing with CANopen devices. IC Role / Device Role / Timing Role: Front-end protector on isolated CAN bus entry points where galvanic isolation is used but ESD coupling remains possible. Use Value: Provides 200W peak pulse dissipation without derating at +85°C ambient, ensuring sustained protection during extended thermal stress cycles. | Use Scenario: Safeguarding LIN-connected sensors (e.g., ambient light, rain detection) in automotive body control modules. IC Role / Device Role / Timing Role: Low-capacitance ESD guard on LIN bus stubs routed near metal enclosures prone to triboelectric charging. Use Value: Maintains 18–21pF inter-line capacitance (Pin1–Pin2) to avoid resonance effects that could distort LIN header synchronization pulses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD and surge protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SP1003-01WTG | Unidirectional, 3.3V VRWM, 15pF typical capacitance, lower clamping (11.5V @ 1A) | Targeted at 3.3V logic-level I/O protection, not automotive 12V bus systems | Select only for low-voltage microcontroller GPIO protection; unsuitable for CAN/LIN due to insufficient VRWM headroom. |
| SMF33A | Single-channel, 33V VRWM, 100pF capacitance, higher VCL (70V @ 4A) | Requires two devices for differential protection; larger footprint than SOT23-3L | Acceptable for cost-sensitive non-automotive CAN nodes where board space and clamping voltage margin are less critical. |
Compared with SP1003-01WTG and SMF33A, DESD32VS2SO-7 uniquely delivers dual-channel AEC-Q101-compliant protection in SOT23-3L with optimized 32V VRWM, 50V clamping at 4A, and sub-42pF capacitance - making it the only solution qualified for direct integration into automotive CAN/LIN transceiver reference designs without external layout compromises.
Availability
DESD32VS2SO-7 is available at Aetrix Electronics and suitable for automotive ECU design, industrial fieldbus interface development, and body electronics module production requiring stable component supply and long-term lifecycle assurance.
Supply support for DESD32VS2SO-7 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, headquartered in Plano, Texas, with design centers across Asia and Europe, serving automotive, industrial, computing, and consumer markets.
The DESD32VS2SO-7 belongs to Diodes' AEC-Q101-qualified TVS diode portfolio, engineered specifically for high-reliability transient suppression in automotive networking and industrial communication interfaces.
FAQ
What is the maximum operating temperature for DESD32VS2SO-7?
The DESD32VS2SO-7 has a specified operating junction temperature range of –65°C to +150°C, validated per AEC-Q101 stress testing. Its thermal resistance (RθJA = 417°C/W) assumes mounting on a standard FR-4 PCB with 2oz copper; actual max ambient depends on power dissipation and board layout.
Does DESD32VS2SO-7 support CAN FD data rates up to 5Mbps?
Yes - its 36–42pF channel capacitance (pin-to-ground) and fast <1ns response time preserve signal integrity for CAN FD bit rates up to 5Mbps. Layout best practices (short traces, symmetric routing, ground plane proximity) are required to maintain impedance matching and minimize reflections.
How does the SOT23-3L package affect PCB assembly yield?
The SOT23-3L footprint (2.9mm × 1.3mm) is compatible with standard pick-and-place equipment and reflow profiles per J-STD-020 Level 1. Its matte tin finish ensures reliable solder wetting, and the 0.009g mass minimizes tombstoning risk - typical first-pass yield exceeds 99.95% in automated SMT lines.
Can DESD32VS2SO-7 replace older DESD32VS2T-7 in existing designs?
Yes - both share identical electrical specs, SOT23-3L package, and AEC-Q101 qualification. The "-7" suffix denotes 3,000-piece tape-and-reel packaging; no schematic or layout changes are needed for drop-in replacement, though date code tracking and reel size logistics should be verified.
DESD32VS2SO-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:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 32V (Max)
- Voltage - Breakdown (Min):
- 34V
- Voltage - Clamping (Max) @ Ipp:
- 50V
- Current - Peak Pulse (10/1000µs):
- 4A (8/20µs)
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 36pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DESD32VS2SO-7 FAQ
1.How can I place an order for DESD32VS2SO-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DESD32VS2SO-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 DESD32VS2SO-7 reliable?
The price and inventory of DESD32VS2SO-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DESD32VS2SO-7 is usually 5 days.
3.What payment methods are accepted for DESD32VS2SO-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DESD32VS2SO-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DESD32VS2SO-7?
DESD32VS2SO-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DESD32VS2SO-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 DESD32VS2SO-7?
For technical support, including DESD32VS2SO-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DESD32VS2SO-7 requirements.
6.How does Aetrix verify that DESD32VS2SO-7 is sourced from the original manufacturer or authorized distributors?
All DESD32VS2SO-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 DESD32VS2SO-7 meets industry standards.
7.What is the process for return or replacement of DESD32VS2SO-7?
All DESD32VS2SO-7 units undergo pre-shipment inspection (PSI). If there is an issue with DESD32VS2SO-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 DESD32VS2SO-7 part is unused and in its original packaging.
Return procedure for DESD32VS2SO-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DESD32VS2SO-7 Tags
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