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Vishay General Semiconductor - Diodes Division SMBG11CAHE3/5B
- Part No.:
- SMBG11CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG11CAHE3/5B.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,681
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Product details
Overview
SMBG11CAHE3/5B 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 SMBG11CAHE3/5B datasheet, SMBG11CAHE3/5B pinout, SMBG11CAHE3/5B application, or SMBG11CAHE3/5B equivalent, this device is selected for high-reliability transient suppression in CAN bus interfaces, sensor supply rails, and automotive infotainment I/O lines where bidirectional surge immunity and low clamping ratio are critical.
Technical Context
The SMBG11CAHE3/5B operates as a symmetrical, bidirectional avalanche diode with identical electrical characteristics in both polarities - enabling protection against positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable VBR tolerance (±5 %) and low leakage (<1.0 µA at VWM), while the low incremental surge resistance supports fast clamping response under ISO 7637-2 and IEC 61000-4-5 surge events.
Thermally, it delivers 100 °C/W junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads and sustains operation from –55 °C to +150 °C. The device meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101, confirming suitability for under-hood and ADAS-related applications requiring long-term stability under thermal cycling and humidity exposure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before clamping begins; sets safe margin below system rail voltage. |
| VBR (min/max) | 12.2 V / 13.5 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during transients. |
| VC @ IPPM | 18.2 V at 33 A - Clamped voltage under 600 W 10/1000 µs surge; limits downstream IC stress to safe levels. |
| PPPM | 600 W - Peak pulse power handling capability; validates compliance with ISO 7637-2 Pulse 1/2a/5a test levels. |
| ID @ VWM | <1.0 µA - Reverse leakage current at stand-off voltage; minimizes quiescent power loss in battery-powered systems. |
| TJ max | +150 °C - Maximum junction temperature; enables use in high-ambient environments like engine control units. |
| Package | SMBG (DO-215AA) - Surface-mount, low-profile package with matte tin-plated leads; compatible with automated SMT assembly and reflow profiles up to 260 °C peak. |
Pinout & Package
Package: SMBG (DO-215AA), bidirectional configuration - no polarity marking; symmetrical terminals with identical electrical behavior in either direction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals serve identically as clamping nodes; no cathode band marking; supports bidirectional surge current flow. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics including powertrain and body control modules; includes HTOL, TC, HAST, and UHAST testing. |
| 600 W peak pulse power (10/1000 µs) | Withstands repetitive surges per ISO 7637-2 without degradation; supports >100,000 cycles at 0.01 % duty cycle. |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes voltage overshoot during fast transients; protects 12 V logic interfaces and microcontroller I/O pins. |
| MSL Level 1 moisture sensitivity | Zero bake requirement prior to reflow; simplifies manufacturing and eliminates moisture-induced popcorning risk. |
| Glass-passivated junction | Ensures stable VBR over lifetime and temperature; reduces parameter drift vs. epoxy-passivated alternatives. |
Applications
| Automotive CAN Bus Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting CAN_H/CAN_L differential pair in vehicle ECUs against load dump and inductive switching transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector interface to shunt ESD and surge energy before reaching CAN transceiver. Use Value: Maintains signal integrity by limiting transient voltage to ≤18.2 V while preserving common-mode noise rejection of the differential bus. | Use Scenario: Safeguarding analog output (4–20 mA) or digital I²C lines from EFT and lightning-induced surges in factory automation sensors. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF typical) bidirectional clamp across signal and ground to suppress sub-100 ns transients without distorting signal edges. Use Value: Prevents latch-up or damage to precision ADCs and microcontrollers while adding <1 ns propagation delay to protected signals. |
| Automotive Infotainment Power Rail | Consumer Appliance Motor Drive Control |
Use Scenario: Shielding 12 V supply input to head unit or display module from battery line transients during ignition and alternator load dump. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main DC input, coordinated with upstream fuse and downstream LDO regulators. Use Value: Limits rail voltage excursion to 18.2 V, preventing overvoltage shutdown or internal regulator failure in sensitive SoCs. | Use Scenario: Protecting gate driver inputs and MCU GPIOs controlling BLDC motors in smart home appliances subject to motor commutation spikes. IC Role / Device Role / Timing Role: Fast-response TVS placed at microcontroller I/O pins driving optocouplers or level shifters in motor control logic. Use Value: Absorbs 33 A surge current within nanoseconds, eliminating false triggering and ensuring deterministic PWM timing under noisy conditions. |
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-E3/5B | Same VWM (11 V), but lower PPPM = 600 W (identical), higher VC = 19.9 V at 30.1 A; SMBJ package (DO-214AB), larger footprint. | Less space-constrained designs; slightly higher clamping voltage reduces margin for 12 V rail protection. | Select when board layout allows larger package and higher VC is acceptable for legacy compatibility. |
| 1.5KE11CA-T | Higher PPPM = 1500 W, same VWM/VBR, but axial DO-201 package; not surface-mountable; slower thermal response. | Through-hole prototyping or high-energy surge zones where PCB real estate is not constrained. | Choose only for non-SMT applications requiring >1 kW surge handling; not drop-in for SMBG footprint. |
Compared with SMBJ11CA-E3/5B and 1.5KE11CA-T, the SMBG11CAHE3/5B offers superior board-level integration via its compact SMBG package, tighter VBR tolerance, and AEC-Q101 qualification - making it the preferred choice for production automotive and industrial SMT assemblies demanding validated reliability and minimal footprint.
Availability
SMBG11CAHE3/5B is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and consumer appliance motor control systems requiring stable component supply and full traceability.
Supply support for SMBG11CAHE3/5B 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 high-reliability, automotive-qualified components.
The SMBG series was engineered specifically for space-constrained, high-surge automotive and industrial applications - delivering AEC-Q101-compliant transient suppression in the smallest possible surface-mount package without sacrificing power rating or clamping performance.
FAQ
What is the clamping voltage of SMBG11CAHE3/5B and how is it measured?
The SMBG11CAHE3/5B has a maximum clamping voltage (VC) of 18.2 V at 33 A, measured under the standardized 10/1000 µs double-exponential surge waveform. This value is guaranteed per the Vishay datasheet (Document Number: 88456, Rev. 09-Jan-2024) and reflects the peak voltage seen across the SMBG11CAHE3/5B terminals during worst-case transient conduction - critical for validating protection margins in 12 V systems.
Is SMBG11CAHE3/5B unidirectional or bidirectional?
SMBG11CAHE3/5B is a bidirectional transient voltage suppressor, indicated by the "CA" suffix in its part number. Its electrical characteristics - including VBR, VC, and IPPM - apply identically in both directions, with no cathode marking on the SMBG (DO-215AA) package. This symmetry makes SMBG11CAHE3/5B ideal for protecting AC-coupled or differential signal lines such as CAN bus.
Does SMBG11CAHE3/5B meet automotive qualification standards?
Yes, SMBG11CAHE3/5B is explicitly AEC-Q101 qualified, as confirmed in the Vishay datasheet (page 3, Note 1 and Ordering Information table). This qualification covers stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and unbiased highly accelerated stress test (UHAST), verifying its suitability for automotive powertrain, chassis, and infotainment applications.
What is the maximum operating temperature for SMBG11CAHE3/5B?
The SMBG11CAHE3/5B has a maximum junction temperature (TJ) of +150 °C and an operating junction/storage temperature range of –55 °C to +150 °C. This rating is specified in the "Maximum Ratings" table of the Vishay datasheet and enables reliable operation in under-hood environments and industrial enclosures where ambient temperatures exceed 105 °C.
What does the "HE3/5B" suffix indicate in SMBG11CAHE3/5B?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification; "5B" specifies packaging in 13-inch diameter tape-and-reel format with 3200 units per reel. This ordering code aligns with Vishay's standardized nomenclature (see page 3 of Document 88456) and confirms that SMBG11CAHE3/5B is supplied in automotive-grade, fully traceable form with industry-standard SMT handling compatibility.
SMBG11CAHE3/5B 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)
SMBG11CAHE3/5B FAQ
1.How can I place an order for SMBG11CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG11CAHE3/5B 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 SMBG11CAHE3/5B reliable?
The price and inventory of SMBG11CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG11CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG11CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG11CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG11CAHE3/5B?
SMBG11CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG11CAHE3/5B 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 SMBG11CAHE3/5B?
For technical support, including SMBG11CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG11CAHE3/5B requirements.
6.How does Aetrix verify that SMBG11CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG11CAHE3/5B 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 SMBG11CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG11CAHE3/5B?
All SMBG11CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG11CAHE3/5B, 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 SMBG11CAHE3/5B part is unused and in its original packaging.
Return procedure for SMBG11CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG11CAHE3/5B Tags
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