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Vishay General Semiconductor - Diodes Division SMBJ11CAHM3_B/I
- Part No.:
- SMBJ11CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11CAHM3_B/I.pdf
- Description:
- 600W,11V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,913
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Product details
Overview
SMBJ11CAHM3_B/I 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 a 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 - used for protecting MOSFET gates, sensor interfaces, and industrial I/O lines against ESD and inductive switching spikes.
For engineers reviewing the SMBJ11CAHM3_B/I datasheet, SMBJ11CAHM3_B/I pinout, SMBJ11CAHM3_B/I application, or SMBJ11CAHM3_B/I equivalent, this page delivers verified electrical specs, bidirectional clamping behavior, thermal derating curves, AEC-Q101 qualification status, and real-world protection use cases - all aligned with Vishay Document #88392 (Rev. 09-Jan-2024).
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR, IPPM, and VC ratings in forward and reverse directions. Its glass-passivated junction ensures stable leakage (<5.0 µA at VWM) and fast response time (<1.0 ns), enabling effective suppression of ESD (IEC 61000-4-2) and lightning-induced surges (IEC 61000-4-5).
Thermal resistance is rated at RθJA = 100 °C/W (on 0.2" × 0.2" copper pads) and RθJL = 20 °C/W, supporting reliable operation up to TJ = +150 °C. The HM3 suffix confirms halogen-free, RoHS-compliant construction and AEC-Q101 qualification for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse/forward voltage before clamping begins; defines safe operating margin for 12 V nominal systems. |
| VBR (min/max) | 12.2 V / 13.5 V at IT = 1 mA - Confirmed bidirectional breakdown threshold; ensures consistent clamping onset across polarity. |
| VC @ IPPM | ≤18.2 V at 33 A (10/1000 µs) - Clamped voltage during worst-case surge; limits stress on downstream ICs like microcontrollers or transceivers. |
| PPPM | 600 W - Peak transient power handling capability; supports repetitive 0.01% duty cycle surges without degradation. |
| ID @ VWM | ≤5.0 µA - Low reverse leakage at standoff voltage; minimizes standby power loss in battery-powered sensor nodes. |
| TJ max. | +150 °C - Maximum junction temperature; enables deployment in under-hood automotive or industrial control cabinets. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline (5.21 mm × 4.06 mm × 2.20 mm); compatible with automated pick-and-place and reflow soldering. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional device - no polarity marking; symmetrical two-terminal construction with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no fixed polarity - enables single-device protection of AC-coupled or differential lines. |
| Terminal 2 | Anode / Cathode (bidirectional) | Electrically identical to Terminal 1; full symmetry allows placement without orientation constraints on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Handles high-energy transients from relay coil collapse or motor commutation without failure - validated per IEC 61000-4-5 Level 3. |
| AEC-Q101 qualified (HM3 suffix) | Qualified for automotive applications including body electronics and infotainment power rails; includes temperature cycling, HTRB, and ESD testing. |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for EU, China RoHS, and JEDEC M101 standards; supports green manufacturing programs. |
| MSL Level 1 (260 °C peak) | Unlimited floor life at ≤30 °C/60% RH; eliminates bake-out requirement prior to reflow - reduces production overhead. |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage exposure during clamping - critical for safeguarding 3.3 V or 5 V logic interfaces adjacent to protected lines. |
Applications
| Automotive Body Control Module (BCM) Power Input | Industrial RS-485 Transceiver Protection |
|---|---|
Use Scenario: Protects 12 V supply rail of BCM from load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between VIN and GND, absorbing >100 V transients within nanoseconds. Use Value: Limits voltage seen by LDO regulators and MCU power pins to ≤18.2 V, preventing latch-up or permanent damage during vehicle cranking events. |
Use Scenario: Shields RS-485 transceiver (e.g., SN65HVD230) data lines against ESD and field-induced surges in factory automation networks. IC Role / Device Role / Timing Role: Differential-line TVS connected across A/B bus terminals, leveraging symmetry to suppress common-mode and differential transients. Use Value: Maintains signal integrity by clamping transients before they exceed transceiver absolute maximum ratings (±15 V), avoiding communication lockup. |
| Consumer Appliance Motor Driver Gate Protection | Smart Meter Sensor Interface Protection |
Use Scenario: Safeguards high-side/low-side MOSFET gate drivers in washing machine motor inverters from Miller-induced voltage spikes. IC Role / Device Role / Timing Role: Placed between gate and source (or gate and driver output), clamping dv/dt-induced overshoot during switching transitions. Use Value: Prevents gate oxide breakdown by limiting gate-source voltage to ≤18.2 V - extends MOSFET lifetime and avoids false turn-on. |
Use Scenario: Protects analog front-end inputs (e.g., current shunt amplifier, temperature ADC) in utility smart meters exposed to lightning-induced surges on current transformer leads. IC Role / Device Role / Timing Role: Connected from sensor input to ground, acting as low-capacitance (<100 pF typical) clamp to preserve signal bandwidth. Use Value: Enables accurate metrology under surge conditions by limiting input overvoltage without distorting <1 kHz measurement signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CAHE3_B/I | Same electrical specs, but RoHS-compliant commercial grade (not AEC-Q101 qualified); uses standard tin plating instead of whisker-tested matte tin. | Lacks automotive qualification; suitable for industrial/commercial designs where AEC-Q101 is not mandated. | Select when cost sensitivity outweighs automotive reliability requirements and lifecycle assurance is not required. |
| SMAJ11CAHM3_A/H | Lower 400 W PPPM, same VWM/VBR; SMA package (smaller footprint, higher RθJA = 140 °C/W). | Reduced surge handling; limited to lower-energy transients (e.g., board-level ESD only, not system-level lightning). | Choose for space-constrained layouts where 600 W rating is unnecessary and thermal margin permits higher junction rise. |
Compared with SMBJ11CAHM3_B/I, the HE3 variant trades automotive qualification for lower cost in non-automotive settings, while the SMAJ11CAHM3_A/H sacrifices surge robustness and thermal performance for smaller PCB area - making SMBJ11CAHM3_B/I optimal for demanding automotive and industrial surge environments.
Availability
SMBJ11CAHM3_B/I is available at Aetrix Electronics and suitable for automotive body electronics, industrial communications interfaces, appliance motor control, and smart metering applications requiring stable component supply, AEC-Q101 validation, and long-term lifecycle support.
Supply support for SMBJ11CAHM3_B/I 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series targets high-reliability transient suppression in automotive, industrial, and telecom infrastructure - engineered for robust clamping, low leakage, and seamless integration into automated SMT assembly lines.
FAQ
What is the clamping voltage of SMBJ11CAHM3_B/I at its rated peak pulse current?
The SMBJ11CAHM3_B/I 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 per ANSI/IEEE C62.35 and confirmed in Vishay Document #88392, Table 1. The clamping voltage directly determines the maximum stress imposed on protected circuitry during surge events, making it a critical parameter for interface-level protection design using SMBJ11CAHM3_B/I.
Is SMBJ11CAHM3_B/I suitable for automotive applications?
Yes, SMBJ11CAHM3_B/I is AEC-Q101 qualified, as indicated by the "HM3" suffix and confirmed in Vishay's ordering information table (page 3, Document #88392). It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD qualification - making SMBJ11CAHM3_B/I appropriate for under-hood and cabin electronics such as lighting modules, body control units, and ADAS sensor power rails.
How does the bidirectional configuration of SMBJ11CAHM3_B/I affect its circuit placement?
The bidirectional configuration of SMBJ11CAHM3_B/I means it has no polarity marking and functions identically in both directions - eliminating orientation constraints during PCB layout. This allows SMBJ11CAHM3_B/I to be placed across AC-coupled lines, differential buses (e.g., CAN, RS-485), or ungrounded power rails without concern for anode/cathode alignment, simplifying design and reducing assembly errors compared to unidirectional TVS diodes.
What is the maximum junction temperature rating for SMBJ11CAHM3_B/I?
The SMBJ11CAHM3_B/I has a maximum junction temperature (TJ) rating of +150 °C, specified in the "Maximum Ratings" table (page 1, Document #88392). This rating enables reliable operation in high-ambient environments such as engine compartments or enclosed industrial enclosures, provided thermal design accounts for RθJA = 100 °C/W and appropriate copper pad area per the recommended mounting layout.
Does SMBJ11CAHM3_B/I meet RoHS and halogen-free requirements?
Yes, SMBJ11CAHM3_B/I meets both RoHS compliance and halogen-free requirements, as explicitly stated in the "Mechanical Data" section (page 1, Document #88392): the "HM3" suffix denotes halogen-free, RoHS-compliant construction. This satisfies environmental mandates for EU, China RoHS, and major OEM sustainability programs - confirmed by Vishay's material categorization documentation (www.vishay.com/doc?99912).
SMBJ11CAHM3_B/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ11CAHM3_B/I FAQ
1.How can I place an order for SMBJ11CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11CAHM3_B/I 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 SMBJ11CAHM3_B/I reliable?
The price and inventory of SMBJ11CAHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ11CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ11CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11CAHM3_B/I?
SMBJ11CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11CAHM3_B/I 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 SMBJ11CAHM3_B/I?
For technical support, including SMBJ11CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11CAHM3_B/I requirements.
6.How does Aetrix verify that SMBJ11CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ11CAHM3_B/I 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 SMBJ11CAHM3_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ11CAHM3_B/I?
All SMBJ11CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11CAHM3_B/I, 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 SMBJ11CAHM3_B/I part is unused and in its original packaging.
Return procedure for SMBJ11CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ11CAHM3_B/I Tags
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