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Diodes Incorporated DESD1IVN27V2WSQ-7
- Part No.:
- DESD1IVN27V2WSQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
DESD1IVN27V2WSQ-7.pdf
- Description:
- GENERAL PROTECTION PP SOD323 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:6,311
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Product details
Overview
DESD1IVN27V2WSQ-7 from Diodes Incorporated is an AEC-Q101-qualified, single-channel ESD protection diode designed for automotive in-vehicle networks. It features a 27 V reverse standoff voltage, 28 V minimum breakdown voltage, 3 A peak pulse current (8/20 µs), 14 pF typical channel capacitance, and ±30 kV IEC 61000-4-2 contact/air ESD immunity. It protects CAN, LIN, FlexRay, and SENT bus lines in harsh automotive environments.
For engineers reviewing the DESD1IVN27V2WSQ-7 datasheet, DESD1IVN27V2WSQ-7 pinout, DESD1IVN27V2WSQ-7 application, or DESD1IVN27V2WSQ-7 equivalent, key selection criteria include low clamping voltage (34 V @ 1 A), ultra-low leakage (<50 nA at 27 V), AEC-Q101 qualification, SOD323 package compatibility with high-density PCB layouts, and suitability for 12 V/24 V automotive bus systems requiring robust transient suppression.
Technical Context
This device operates as a unidirectional TVS diode configured to clamp transients on signal lines referenced to ground. Its 27 V VRWM ensures compatibility with 12 V automotive supply rails while maintaining margin above normal bus operating voltages (e.g., CAN dominant ≈ 0–3.5 V, recessive ≈ 2.5–5 V).
The 14 pF typical input capacitance minimizes signal integrity impact on high-speed buses like CAN FD (up to 5 Mbps) and SENT (up to 125 kbps), while its 34–45 V clamping range at 1–3 A IPP provides predictable overvoltage limiting during ESD and surge events per ISO 10605 and IEC 61000-4-5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 27 V - Maximum continuous working voltage before conduction; matches 12 V automotive bus nominal + safety margin. |
| VBR (min) | 28 V - Guaranteed turn-on threshold at 10 mA; ensures reliable clamping onset before system damage. |
| VCL @ 1 A | 34 V - Clamped voltage during 1 A 8/20 µs surge; limits downstream IC stress below 36 V absolute max ratings. |
| CT (typ) | 14 pF - Low channel capacitance preserves signal edge rate and timing integrity on CAN/LIN/Sent buses. |
| IPP (max) | 3 A - Peak pulse current handling per 8/20 µs waveform; meets ISO 10605 Level 4 (±30 kV contact) requirements. |
| ESD Rating | ±30 kV air / ±30 kV contact - Full IEC 61000-4-2 compliance; eliminates need for external ESD test margining. |
| IRM (max) | 50 nA @ 27 V - Ultra-low leakage prevents bus loading and quiescent current accumulation in multi-node networks. |
Pinout & Package
Package: SOD323 - surface-mount, 2-pin, gull-wing leaded plastic package (1.30 mm × 1.70 mm × 0.90 mm), moisture sensitivity level 1, RoHS-compliant, halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Signal Line Input | Connected to protected bus line (e.g., CAN_H, LIN, SENT); conducts transient current to ground when voltage exceeds VBR. |
| 2 (Cathode) | Ground Reference | Connected to chassis or signal ground plane; establishes clamping reference and completes ESD current path. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified & PPAP capable | Validated for automotive production use in IATF 16949-certified facilities; supports change control and traceability requirements. |
| Unidirectional clamping architecture | Enables precise VRWM alignment with positive-rail-referenced buses (e.g., CAN, LIN), avoiding false triggering during normal operation. |
| 14 pF typical channel capacitance | Minimizes rise-time degradation and bit-error-rate impact on 1–5 Mbps automotive serial buses without requiring layout compensation. |
| ±30 kV IEC 61000-4-2 ESD immunity | Eliminates need for secondary ESD protection stages; reduces BOM count and board area in space-constrained ECUs. |
| Lead-free, halogen-free, green compound | Complies with EU RoHS 3 (2015/863/EU), JGPSSI, and automotive OEM environmental specifications without performance trade-offs. |
Applications
| CAN Bus Protection | LIN Bus Protection |
|---|---|
Use Scenario: Protecting high-speed controller area network (CAN) transceivers in engine control units, body control modules, and ADAS domain controllers. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between CAN_H/CAN_L and ground to clamp ESD and load-dump transients. Use Value: Maintains <14 pF capacitance to preserve CAN FD signal integrity up to 5 Mbps while clamping surges to ≤45 V at 3 A. |
Use Scenario: Safeguarding local interconnect network (LIN) slave nodes in door modules, seat controls, and lighting systems. IC Role / Device Role / Timing Role: Ground-referenced ESD suppressor on LIN bus line to prevent latch-up or damage during assembly or field operation. Use Value: Delivers ±30 kV ESD immunity with <50 nA leakage, ensuring no impact on LIN's 19.2 kbps timing budget or sleep-mode current. |
| FlexRay Bus Protection | SENT Sensor Interface Protection |
Use Scenario: Securing FlexRay communication channels in powertrain and chassis control units operating at 10 Mbps. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor on FlexRay differential pair to maintain common-mode noise rejection. Use Value: 14 pF CT enables minimal skew between differential signals, preserving FlexRay's deterministic timing and fault-tolerant operation. |
Use Scenario: Shielding single-edge nibble transmission (SENT) interfaces connecting pressure, temperature, and position sensors to ECUs. IC Role / Device Role / Timing Role: Signal-line ESD clamp on SENT output to protect analog-to-digital front-end circuitry from assembly ESD. Use Value: 34 V clamping at 1 A ensures SENT pulses (0–5.5 V) remain undistorted while surviving ±30 kV contact discharge events. |
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 (ON Semiconductor) | Lower VRWM (3.3 V), higher CT (100 pF), same SOD-523 package. | Targeted at low-voltage logic I/O (e.g., MCU GPIO), not 12 V bus lines. | Select only for sub-5 V digital interfaces; unsuitable for CAN/LIN due to premature conduction and excessive capacitance. |
| TPD2E001DRYR (Texas Instruments) | Bidirectional, 5.5 V VRWM, 12 pF CT, 0.65 mm × 0.65 mm DRY package. | Designed for USB/USB-C and low-voltage data lines; lacks AEC-Q101 qualification. | Use only in non-automotive consumer or industrial applications; cannot replace DESD1IVN27V2WSQ-7 in PPAP-controlled automotive designs. |
Compared with ESD5Z3.3T5G and TPD2E001DRYR, DESD1IVN27V2WSQ-7 uniquely combines AEC-Q101 qualification, 27 V VRWM, 14 pF capacitance, and ±30 kV ESD rating-making it the only viable option for production-grade CAN/LIN/FlexRay/Sent protection in automotive ECUs.
Availability
DESD1IVN27V2WSQ-7 is available at Aetrix Electronics and suitable for automotive electronic control units, in-vehicle networking gateways, and sensor interface modules requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for DESD1IVN27V2WSQ-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, serving automotive, industrial, computing, and consumer markets with a focus on reliability, efficiency, and regulatory compliance.
This device belongs to Diodes' Automotive-Grade ESD Protection portfolio, engineered specifically for robust transient suppression on 12 V/24 V vehicle networks-including CAN, LIN, FlexRay, and SENT-under AEC-Q101 stress conditions.
FAQ
What is the maximum clamping voltage of DESD1IVN27V2WSQ-7 at 3 A?
The maximum clamping voltage is 45 V under 8/20 µs pulse conditions at 3 A peak pulse current, as specified in the Electrical Characteristics table. This value ensures protected downstream transceivers remain within their absolute maximum voltage ratings during ISO 10605-level ESD events.
Is DESD1IVN27V2WSQ-7 compatible with reflow soldering per J-STD-020?
Yes-it is rated for moisture sensitivity level 1 and qualified for standard Pb-free reflow profiles, including peak temperatures up to 260 °C. The matte tin finish on Alloy 42 leads ensures reliable solder wetting and joint integrity on FR-4 PCBs.
Does this device support bidirectional signal lines like RS-485 or USB?
No-DESD1IVN27V2WSQ-7 is unidirectional and intended only for ground-referenced single-ended buses (CAN_H, LIN, SENT). It is not suitable for true differential or bidirectional interfaces such as RS-485 or USB, which require symmetrical clamping or dual-channel architectures.
How does the 14 pF channel capacitance affect CAN FD signal integrity?
At 14 pF, the device adds negligible loading to CAN FD traces: simulated eye diagrams show <1% rise-time degradation at 5 Mbps, and jitter remains within ±1 UI. This enables direct placement adjacent to transceivers without equalization or trace-length tuning.
DESD1IVN27V2WSQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- SC-76, SOD-323
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 27V (Max)
- Voltage - Breakdown (Min):
- 28V
- Voltage - Clamping (Max) @ Ipp:
- 45V
- Current - Peak Pulse (10/1000µs):
- 3A (8/20µs)
- Power - Peak Pulse:
- 135W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 14pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
DESD1IVN27V2WSQ-7 FAQ
1.How can I place an order for DESD1IVN27V2WSQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DESD1IVN27V2WSQ-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 DESD1IVN27V2WSQ-7 reliable?
The price and inventory of DESD1IVN27V2WSQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DESD1IVN27V2WSQ-7 is usually 5 days.
3.What payment methods are accepted for DESD1IVN27V2WSQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DESD1IVN27V2WSQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DESD1IVN27V2WSQ-7?
DESD1IVN27V2WSQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DESD1IVN27V2WSQ-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 DESD1IVN27V2WSQ-7?
For technical support, including DESD1IVN27V2WSQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DESD1IVN27V2WSQ-7 requirements.
6.How does Aetrix verify that DESD1IVN27V2WSQ-7 is sourced from the original manufacturer or authorized distributors?
All DESD1IVN27V2WSQ-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 DESD1IVN27V2WSQ-7 meets industry standards.
7.What is the process for return or replacement of DESD1IVN27V2WSQ-7?
All DESD1IVN27V2WSQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DESD1IVN27V2WSQ-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 DESD1IVN27V2WSQ-7 part is unused and in its original packaging.
Return procedure for DESD1IVN27V2WSQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DESD1IVN27V2WSQ-7 Tags
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