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Vishay General Semiconductor - Diodes Division SMBJ11CAHE3/5B
- Part No.:
- SMBJ11CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11CAHE3/5B.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,421
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Product details
Overview
SMBJ11CAHE3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features 11 V standoff voltage (VWM), 12.2–13.5 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), and clamps to ≤18.2 V at 33 A peak surge current - deployed in industrial sensor interfaces and telecom line protection.
For engineers reviewing the SMBJ11CAHE3/5B datasheet, SMBJ11CAHE3/5B pinout, SMBJ11CAHE3/5B application, or SMBJ11CAHE3/5B equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (–55 to +150 °C), and compliance with UL 497B for protector classification.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical electrical characteristics in forward and reverse directions. Its glass-passivated junction enables fast response time (<1 ns), low incremental surge resistance, and stable clamping under repetitive 10/1000 µs transients at 0.01% duty cycle.
The device is rated for 600 W peak pulse power dissipation and 5.0 W steady-state power on infinite heatsink at 50 °C. Thermal performance is defined by RθJA = 100 °C/W and RθJL = 20 °C/W, supporting reliable operation in compact PCB layouts with 0.2" × 0.2" copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - maximum continuous reverse stand-off voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (min/max) | 12.2 V / 13.5 V at IT = 1 mA - guaranteed breakdown onset range; ensures predictable turn-on during overvoltage events |
| VC @ IPPM | ≤18.2 V at 33 A - clamped voltage under 600 W 10/1000 µs surge; determines protected circuit's maximum transient exposure |
| IPPM | 33 A - peak pulse current handling capacity; defines survivability against standardized lightning/surge waveforms |
| PPPM | 600 W - peak pulse power rating with 10/1000 µs waveform; validates robustness for IEC 61000-4-5 Level 3/4 compliance |
| Junction Temp Range | –55 °C to +150 °C - operational and storage temperature envelope; supports automotive under-hood and industrial ambient conditions |
| Package | SMB (DO-214AA) - surface-mount outline with 0.205" × 0.130" footprint; compatible with automated placement and reflow soldering |
Pinout & Package
Package: SMB (DO-214AA), molded case with matte tin-plated leads, MSL Level 1 (JEDEC J-STD-020), 260 °C peak reflow profile. Polarity: unmarked for bidirectional types; symmetrical terminals with no anode/cathode designation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Transient Input/Output Node | Bidirectional connection point - accepts surge energy from either polarity; connects directly to protected line (e.g., RS-485 bus, sensor supply) |
| Terminal 2 | Transient Input/Output Node | Second symmetrical terminal - completes low-inductance clamping path to ground or reference rail; requires minimal trace length for effective suppression |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and ADAS sensor interfaces; meets stress test requirements for temperature cycling, HTRB, and ESD |
| 600 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges up to 4 kV (open-circuit)/2 kA (short-circuit) without degradation |
| Low clamping ratio (VC/VBR ≈ 1.4) | Ensures tight voltage margin between breakdown and clamping - critical for protecting 12 V logic rails and analog front-ends |
| UL 497B recognized | Approved as a primary protector for telecommunications and data line applications; certified under file E136766 |
| MSL Level 1 moisture sensitivity | Zero bake requirement prior to reflow; supports standard SMT assembly without dry-pack or floor-life constraints |
Applications
| Industrial Sensor Interface | Telecom Data Line Protection |
|---|---|
|
Use Scenario: Protecting 4–20 mA current-loop transmitters and RS-485 nodes from ESD and inductive switching transients in factory automation systems. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential bus lines or supply-to-ground, absorbing surge energy before it reaches interface ICs. Use Value: Limits transient voltage to ≤18.2 V, preventing latch-up or damage to MAX1487 or ADuM1201-level isolators and precision DACs. |
Use Scenario: Shielding Ethernet PHYs and DSL line drivers from lightning-induced surges on twisted-pair telecom infrastructure. IC Role / Device Role / Timing Role: Primary line-side protector mounted at connector entry point, shunting common-mode transients to chassis ground. Use Value: Maintains signal integrity by clamping within 1 ns while surviving repeated 600 W pulses - validated per GR-1089-CORE Section 4.5.2.2. |
| Automotive Body Control Module | Consumer Appliance Power Supply |
|
Use Scenario: Safeguarding LIN bus transceivers and window motor drivers against load dump and ISO 7637-2 Pulse 5a/b transients in 12 V vehicle networks. IC Role / Device Role / Timing Role: Secondary protection stage downstream of fuse and upstream of TJA1020 transceiver, providing fast-response clamping. Use Value: AEC-Q101 qualification ensures reliability over 15-year service life; 150 °C max junction temp supports under-dash mounting near HVAC ducts. |
Use Scenario: Suppressing switching noise and capacitor discharge spikes on AC/DC adapter outputs feeding microcontrollers in smart home devices. IC Role / Device Role / Timing Role: Output-stage TVS across +5 V rail and GND, absorbing 100–200 V transients generated by relay coil de-energization. Use Value: 11 V VWM provides safe margin above nominal 5 V rail while enabling rapid clamping to prevent brownout resets in ESP32-based controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA-E3/5B | No AEC-Q101 qualification; commercial-grade only; same VWM, VBR, PPPM, and package | Not suitable for automotive production; acceptable for industrial prototypes or non-safety-critical consumer designs | Select when AEC-Q101 is not required and cost optimization is prioritized |
| SAC11CA | Same VWM and bidirectional function but in SOD-123FL package; lower PPPM (400 W); higher VC (20 V) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or automotive load dump | Choose only for space-constrained consumer PCBs where 600 W rating is unnecessary |
Compared with SMBJ11CAHE3/5B, the E3/5B variant lacks automotive qualification but matches all electrical specs, while SAC11CA trades surge robustness for smaller footprint - making SMBJ11CAHE3/5B the sole choice for AEC-Q101-compliant, high-energy transient suppression in SMB layout.
Availability
SMBJ11CAHE3/5B is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom data line protection, and automotive body control modules requiring stable component supply and long-term lifecycle support.
Supply support for SMBJ11CAHE3/5B 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 reliability and application-specific validation.
The SMBJ series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for repeatable clamping performance, low leakage, and robust surge endurance under real-world thermal and mechanical stress.
FAQ
What is the maximum clamping voltage of SMBJ11CAHE3/5B at its rated peak pulse current?
The SMBJ11CAHE3/5B clamps to a maximum of 18.2 V at its rated peak pulse current of 33 A (10/1000 µs waveform). This value is measured under standardized test conditions with 0.2" × 0.2" copper pads per terminal and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ11CAHE3/5B maintains this clamping performance across its full operating temperature range.
Is SMBJ11CAHE3/5B suitable for automotive applications?
Yes, SMBJ11CAHE3/5B is AEC-Q101 qualified, making it suitable for automotive applications including body control modules, infotainment interfaces, and ADAS sensor protection. Its construction meets stress test requirements for temperature cycling, highly accelerated life testing, and ESD immunity. The SMBJ11CAHE3/5B is explicitly designated for automotive use via the "HE3" suffix in its ordering code.
How does the bidirectional configuration of SMBJ11CAHE3/5B affect its circuit implementation?
The bidirectional configuration of SMBJ11CAHE3/5B allows it to suppress transients of either polarity without regard to orientation - ideal for AC-coupled lines, differential buses like RS-485, or floating power domains. Unlike unidirectional TVS diodes, SMBJ11CAHE3/5B has no cathode marking and connects symmetrically across the protected nodes. This eliminates polarity-checking during assembly and simplifies layout for balanced signal paths.
What is the thermal resistance specification for SMBJ11CAHE3/5B, and how does it impact PCB layout?
SMBJ11CAHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W. These values assume mounting on 0.2" × 0.2" copper pads per terminal. To maintain safe junction temperatures under repeated surges, designers must provide adequate copper area and avoid excessive trace length - the SMBJ11CAHE3/5B's thermal performance is highly dependent on PCB copper mass and proximity to ground planes.
Does SMBJ11CAHE3/5B meet any safety certification standards?
Yes, SMBJ11CAHE3/5B is Underwriters Laboratories (UL) recognized under standard UL 497B for protectors, with file number E136766. It also complies with RoHS Directive 2011/65/EU and meets JESD201 Class 2 whisker resistance. The molding compound carries UL 94 V-0 flammability rating, confirming suitability for safety-critical end equipment requiring flame-retardant components.
SMBJ11CAHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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 (SMBJ)
SMBJ11CAHE3/5B FAQ
1.How can I place an order for SMBJ11CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11CAHE3/5B 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 SMBJ11CAHE3/5B reliable?
The price and inventory of SMBJ11CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ11CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ11CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11CAHE3/5B?
SMBJ11CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11CAHE3/5B 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 SMBJ11CAHE3/5B?
For technical support, including SMBJ11CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11CAHE3/5B requirements.
6.How does Aetrix verify that SMBJ11CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ11CAHE3/5B 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 SMBJ11CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ11CAHE3/5B?
All SMBJ11CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11CAHE3/5B, 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 SMBJ11CAHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ11CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ11CAHE3/5B Tags
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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