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Vishay General Semiconductor - Diodes Division SMBG11CAHE3/52
- Part No.:
- SMBG11CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG11CAHE3/52.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,999
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Product details
Overview
SMBG11CAHE3/52 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 11 V stand-off voltage (VWM), 12.2–13.5 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), clamping voltage of 18.2 V at 33 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMBG11CAHE3/52 datasheet, SMBG11CAHE3/52 pinout, SMBG11CAHE3/52 application, or SMBG11CAHE3/52 equivalent, this device is selected for high-reliability transient suppression in automotive sensor interfaces, industrial I/O protection, and bidirectional data line surge hardening where low clamping ratio and MSL Level 1 solderability are critical.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR, IPPM, and VC specifications in forward and reverse directions. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1 ns), enabling effective suppression of ESD, lightning-induced surges, and inductive switching transients.
The SMBG11CAHE3/52 is rated for TJ = –55 °C to +150 °C, has RθJA = 100 °C/W, and meets J-STD-020 MSL Level 1 with 260 °C peak reflow profile - confirming suitability for automated SMT assembly in harsh-environment electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR (min/max) | 12.2 V / 13.5 V at 1 mA - Confirmed breakdown threshold ensuring predictable turn-on during transients. |
| VC @ IPPM | 18.2 V at 33 A - Clamped voltage under 600 W 10/1000 µs surge; limits stress on downstream ICs. |
| PPPM | 600 W - Peak pulse power handling capability per standard waveform; supports repetitive surge events at 0.01% duty cycle. |
| IPPM | 33 A - Peak pulse current corresponding to VC; used to size PCB trace width and verify system-level surge margin. |
| TJ max. | +150 °C - Maximum junction temperature rating; enables operation in under-hood automotive or industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive electronic systems per stress test requirements including HTGB, HTRB, and TCT. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, gull-wing leaded case with matte tin-plated terminals; dimensions 4.57 mm × 3.94 mm × 2.10 mm (L × W × H); UL 94 V-0 molding compound; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Terminal A | One side of symmetrical PN junction; connects to line under protection (e.g., CAN_H or RS-485 A). |
| Cathode | Terminal K | Other side of symmetrical PN junction; connects to same line (e.g., CAN_H or RS-485 A) - bidirectional conduction means both terminals behave identically under reverse/forward surge. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential lines (e.g., CAN, RS-485) without polarity concerns. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) when properly laid out on 5.0 mm × 5.0 mm copper pads. |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control modules, ADAS sensors, and body electronics. |
| MSL Level 1, 260 °C peak | Supports lead-free reflow without preconditioning; eliminates moisture-related popcorning risk during manufacturing. |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage overshoot during clamping - critical for protecting 12 V logic interfaces and 3.3 V/5 V microcontrollers. |
Applications
| Automotive CAN Bus Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting CAN_H/CAN_L lines in vehicle ECUs against load dump, jump-start spikes, and ESD events. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between differential pair and transceiver, shunting surge energy to ground. Use Value: Maintains signal integrity by limiting transient voltage to ≤18.2 V while surviving repeated 33 A pulses - meeting ISO 16750-2 and SAE J1113-11 requirements. | Use Scenario: Safeguarding long-haul RS-485 communication links in factory automation against ground loop surges and lightning induction. IC Role / Device Role / Timing Role: Line-to-line and line-to-ground TVS mounted at connector entry point to absorb common-mode and differential-mode transients. Use Value: Enables >1 km cable runs with immunity to ±30 kV ESD (IEC 61000-4-2) and ±4 kV surge (IEC 61000-4-5), preserving data integrity without added latency. |
| Consumer Sensor Signal Lines | Power Supply Input Stage |
Use Scenario: Shielding analog outputs (e.g., temperature, pressure sensors) from ESD during handling or board insertion. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF at 0 V) shunt protector on signal path to ADC input or microcontroller GPIO. Use Value: Prevents latch-up or damage to 3.3 V/5 V sensor interface ICs while adding <0.5 ns propagation delay - no impact on sampling accuracy. | Use Scenario: Secondary overvoltage clamp on 12 V DC input rails after primary fuse and MOV, targeting fast-rising transients missed by slower protectors. IC Role / Device Role / Timing Role: Fast-response secondary TVS placed directly at regulator input to limit voltage seen by LDO or DC-DC controller. Use Value: Clamps 10/1000 µs surges to 18.2 V within <1 ns, preventing regulator shutdown or internal FET avalanche - extends system uptime in brownout-prone environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA-E3/52 | Same VWM/VBR/VC, but SMB (DO-214AA) package - 0.2 mm taller, 0.3 mm wider; RθJA = 110 °C/W vs. 100 °C/W. | Less suitable for ultra-dense layouts; slightly lower thermal performance in high-power surge scenarios. | Select SMBG11CAHE3/52 when board space is constrained or AEC-Q101 qualification is mandatory - SMBJ11CA-E3/52 lacks automotive qualification. |
| 1.5KE11CA | Through-hole DO-201 package; same electrical specs but higher IFSM (100 A vs. N/A for bidirectional), larger footprint, no MSL rating. | Not compatible with automated SMT lines; unsuitable for high-volume automotive production. | Choose SMBG11CAHE3/52 for surface-mount scalability, reflow compatibility, and automotive compliance - 1.5KE11CA remains viable only for prototyping or legacy through-hole designs. |
Compared with SMBJ11CA-E3/52 and 1.5KE11CA, SMBG11CAHE3/52 delivers superior manufacturability via MSL Level 1 reflow support, tighter thermal resistance, and formal AEC-Q101 validation - making it the preferred choice for production-grade automotive and industrial SMT assemblies requiring long-term supply stability.
Availability
SMBG11CAHE3/52 is available at Aetrix Electronics and suitable for automotive CAN bus protection, industrial RS-485 interface hardening, and consumer sensor signal line safeguarding requiring stable component supply across multi-year production cycles.
Supply support for SMBG11CAHE3/52 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 environments - combining AEC-Q101 validation, low-profile packaging, and precise clamping performance.
FAQ
What is the clamping voltage of SMBG11CAHE3/52 at its rated peak pulse current?
The SMBG11CAHE3/52 has a maximum clamping voltage (VC) of 18.2 V at its peak pulse current (IPPM) of 33 A, measured under the standardized 10/1000 µs waveform. This value is guaranteed per Vishay's datasheet revision 09-Jan-2024 (Document Number: 88456) and reflects actual device behavior when mounted on 5.0 mm × 5.0 mm copper pads - critical for validating voltage margins in protected circuits.
Is SMBG11CAHE3/52 suitable for automotive applications?
Yes, SMBG11CAHE3/52 is AEC-Q101 qualified per the Vishay datasheet, confirming its suitability for automotive applications including engine control units, ADAS sensor interfaces, and body electronics. The "HE3" suffix explicitly denotes AEC-Q101 qualification and RoHS compliance, and the device meets MSL Level 1 reflow requirements - essential for modern automotive SMT manufacturing.
How does the bidirectional nature of SMBG11CAHE3/52 affect its use in circuit design?
The bidirectional configuration of SMBG11CAHE3/52 allows symmetrical clamping on both polarities, eliminating the need for orientation awareness during placement. This makes it ideal for protecting differential buses like CAN or RS-485, where transients can appear with either polarity - unlike unidirectional TVS diodes, SMBG11CAHE3/52 requires no cathode band alignment and functions identically regardless of terminal connection order.
What is the thermal resistance of SMBG11CAHE3/52, and how does it impact layout?
SMBG11CAHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value guides PCB layout: reducing pad area increases thermal impedance, risking junction overheating during repetitive surges; maintaining minimum pad size ensures the SMBG11CAHE3/52 stays within its 150 °C TJ limit during sustained transient events.
Does SMBG11CAHE3/52 have a polarity marking on the package?
No, SMBG11CAHE3/52 does not feature a polarity marking such as a cathode band because it is a bidirectional TVS diode. As confirmed in the Vishay datasheet, "no marking on bidirectional types" - both terminals are functionally identical, and orientation during placement has no effect on electrical performance or clamping behavior.
SMBG11CAHE3/52 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):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 33A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG11CAHE3/52 FAQ
1.How can I place an order for SMBG11CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG11CAHE3/52 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 SMBG11CAHE3/52 reliable?
The price and inventory of SMBG11CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG11CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG11CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG11CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG11CAHE3/52?
SMBG11CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG11CAHE3/52 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 SMBG11CAHE3/52?
For technical support, including SMBG11CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG11CAHE3/52 requirements.
6.How does Aetrix verify that SMBG11CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG11CAHE3/52 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 SMBG11CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG11CAHE3/52?
All SMBG11CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG11CAHE3/52, 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 SMBG11CAHE3/52 part is unused and in its original packaging.
Return procedure for SMBG11CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG11CAHE3/52 Tags
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