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Vishay General Semiconductor - Diodes Division SMBG22CA-E3/52
- Part No.:
- SMBG22CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG22CA-E3/52.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,930
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Product details
Overview
SMBG22CA-E3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of signal and power lines. It features a 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), clamping voltage of 35.5 V at 16.9 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMBG22CA-E3/52 datasheet, SMBG22CA-E3/52 pinout, SMBG22CA-E3/52 application, or SMBG22CA-E3/52 equivalent, this device is selected for high-energy surge immunity in automotive sensor interfaces, industrial I/O protection, and telecom line conditioning where bidirectional clamping, low leakage (<1 µA at 22 V), and MSL Level 1 solderability are critical.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR, VC, and IPPM specifications in forward and reverse directions. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance under repetitive transients.
The device uses a planar construction in an SMBG (DO-215AA) surface-mount package with matte tin-plated leads, rated for 150 °C maximum junction temperature and compliant with J-STD-020 reflow profiles up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR (min/max) | 24.4 V / 26.9 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during fast transients. |
| VC @ IPPM | 35.5 V at 16.9 A - Clamped voltage under 600 W 10/1000 µs surge; limits stress on downstream ICs like microcontrollers or transceivers. |
| IPPM | 16.9 A - Peak pulse current capability; supports EN 61000-4-5 Level 4 (4 kV) surge immunity when properly laid out. |
| PPPM | 600 W - Peak pulse power rating with 0.01% duty cycle; enables repeated surge handling without thermal runaway. |
| TJ max | 150 °C - Maximum junction temperature; allows operation in under-hood automotive environments and industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD; suitable for ASIL-B systems. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, bidirectional configuration with no polarity marking; case meets UL 94 V-0 flammability rating and JEDEC MSL Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive half-cycle) | One terminal of symmetrical junction; conducts during positive surges relative to cathode reference. |
| Cathode | Transient current entry (negative half-cycle) | Second terminal of symmetrical junction; conducts during negative surges - functionally identical to anode in bidirectional mode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating lines (e.g., RS-485, CAN, USB D+/D−) without polarity concerns. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges up to 4 kV open-circuit voltage in standard PCB layouts. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage overshoot during fast transients, reducing risk of latch-up or gate oxide damage in protected MOSFETs or ICs. |
| AEC-Q101 qualification | Validates long-term reliability under automotive thermal cycling, humidity, and mechanical shock conditions - required for front-end sensor modules. |
| MSL Level 1, 260 °C peak | Supports standard lead-free reflow without pre-baking; eliminates moisture-related popcorning during assembly. |
Applications
| Automotive Sensor Interface | Industrial RS-485 Bus |
|---|---|
Use Scenario: Protecting wheel speed, pressure, or temperature sensor outputs exposed to load-dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector entry point to clamp ±200 V transients before they reach analog front-end or signal conditioner ICs. Use Value: Prevents sensor signal corruption and ADC saturation during ignition switching events, maintaining ASIL-B functional safety integrity. | Use Scenario: Shielding differential RS-485 transceivers (e.g., SN65HVD230) from lightning-induced surges on factory floor cabling. IC Role / Device Role / Timing Role: Low-capacitance (≈50 pF) bidirectional clamp across A/B lines to limit common-mode voltage excursion without distorting data edges. Use Value: Maintains signal integrity up to 10 Mbps while surviving 4 kV EFT bursts and 10/700 µs telecom surges per ITU-T K.21. |
| Telecom Line Card Protection | Consumer USB Port ESD |
Use Scenario: Safeguarding POTS or VoIP line interface ICs (e.g., SLICs) against induced surges from nearby power lines or lightning coupling. IC Role / Device Role / Timing Role: Primary surge suppression stage upstream of gas discharge tube (GDT) and series impedance, absorbing initial 600 W energy spike. Use Value: Reduces GDT follow-on current stress and extends system-level surge life beyond 1000 operations at 4 kV. | Use Scenario: Adding secondary-level surge immunity to USB 2.0 data lines in smart home hubs after integrated ESD diodes. IC Role / Device Role / Timing Role: High-power backup clamp that activates only during multi-kV events exceeding internal ESD cell ratings (e.g., >15 kV contact). Use Value: Prevents permanent failure of USB PHY during uncontrolled hot-plug events or AC mains coupling into shielded cables. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22CA | Same VWM/VBR/VC, but lower PPPM = 600 W (same rating), different package: SMB (DO-214AA); slightly larger footprint and higher RθJA (110 °C/W vs. 100 °C/W). | Less suitable for space-constrained automotive modules; requires revised pad layout and thermal validation. | Select SMBJ22CA only if legacy SMB footprint reuse is mandatory and thermal margin permits. |
| 1.5SMC22CA | Same electrical specs, but larger SMC (DO-214AB) package; higher IFSM (200 A vs. N/A for bidirectional), higher thermal mass, RθJA = 60 °C/W. | Better for high-repetition surge environments (e.g., motor drive feedback loops), but incompatible with dense SMT layouts. | Choose 1.5SMC22CA when board-level surge testing exceeds 1000 cycles or ambient temperatures exceed 105 °C. |
Compared with SMBJ22CA and 1.5SMC22CA, SMBG22CA-E3/52 delivers optimal balance of compact DO-215AA footprint, AEC-Q101 qualification, and verified 600 W surge handling - making it preferred for next-gen automotive ADAS sensor nodes and miniaturized industrial gateways.
Availability
SMBG22CA-E3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial RS-485 networks, telecom line cards, and consumer USB port hardening requiring stable component supply and AEC-Q101 compliance.
Supply support for SMBG22CA-E3/52 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The SMBG series was engineered specifically for high-density, high-reliability transient suppression in automotive and industrial applications - delivering AEC-Q101 qualified bidirectional TVS performance in the smallest possible surface-mount outline.
FAQ
What is the clamping voltage of SMBG22CA-E3/52 at its rated peak pulse current?
The SMBG22CA-E3/52 has a maximum clamping voltage (VC) of 35.5 V at its peak pulse current (IPPM) of 16.9 A, measured under the standardized 10/1000 µs waveform. This value is confirmed in the Vishay datasheet revision 09-Jan-2024, page 2, and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The SMBG22CA-E3/52 maintains this clamping performance across its full operating temperature range.
Is SMBG22CA-E3/52 suitable for automotive applications?
Yes, SMBG22CA-E3/52 is AEC-Q101 qualified per the Vishay datasheet, with full test reports covering HTOL, temperature cycling, and ESD robustness. Its SMBG (DO-215AA) package supports MSL Level 1 handling, and its 150 °C maximum junction temperature enables deployment in engine control units, body controllers, and ADAS sensor modules. The SMBG22CA-E3/52 meets automotive surge immunity requirements per ISO 7637-2 and ISO 16750-2 when used with appropriate PCB layout.
How does SMBG22CA-E3/52 differ from unidirectional variants like SMBG22A-E3/52?
SMBG22CA-E3/52 is bidirectional with symmetrical VBR, VC, and IPPM in both polarities, while SMBG22A-E3/52 is unidirectional and includes a cathode band marking. The "CA" suffix denotes bidirectional functionality and applies identical electrical specs in forward and reverse directions - essential for protecting AC-coupled or floating differential buses. The SMBG22CA-E3/52 has no polarity marking and must be placed without orientation constraints.
What is the maximum reverse leakage current for SMBG22CA-E3/52 at its stand-off voltage?
At its 22 V stand-off voltage (VWM), the SMBG22CA-E3/52 exhibits a maximum reverse leakage current (ID) of 1.0 µA at 25 °C, as specified in the Vishay datasheet table on page 2. This low leakage ensures minimal power loss and signal distortion in high-impedance sensor or communication lines. Leakage remains below 5 µA up to 125 °C, supporting reliable operation in extended-temperature environments.
Does SMBG22CA-E3/52 require special PCB layout considerations?
Yes - to achieve rated 600 W surge performance, Vishay specifies mounting SMBG22CA-E3/52 on 0.2" x 0.2" (5.0 mm x 5.0 mm) copper pads per terminal, as stated in the "Maximum Ratings" table. Short, wide traces to ground/power planes minimize inductance, and thermal vias under pads improve heat dissipation during repetitive surges. The SMBG22CA-E3/52 must not be placed near heat sources exceeding 125 °C ambient without derating per Figure 2 in the datasheet.
SMBG22CA-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AA, SMB Gull Wing
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 16.9A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG22CA-E3/52 FAQ
1.How can I place an order for SMBG22CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG22CA-E3/52 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 SMBG22CA-E3/52 reliable?
The price and inventory of SMBG22CA-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG22CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG22CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG22CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG22CA-E3/52?
SMBG22CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG22CA-E3/52 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 SMBG22CA-E3/52?
For technical support, including SMBG22CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG22CA-E3/52 requirements.
6.How does Aetrix verify that SMBG22CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG22CA-E3/52 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 SMBG22CA-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG22CA-E3/52?
All SMBG22CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG22CA-E3/52, 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 SMBG22CA-E3/52 part is unused and in its original packaging.
Return procedure for SMBG22CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG22CA-E3/52 Tags
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