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Vishay General Semiconductor - Diodes Division SMBJ11CAHM3/H
- Part No.:
- SMBJ11CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11CAHM3/H.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,321
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Product details
Overview
SMBJ11CAHM3/H 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 MOSFETs, sensor interfaces, and industrial I/O lines against ESD and inductive switching spikes.
For engineers reviewing the SMBJ11CAHM3/H datasheet, SMBJ11CAHM3/H pinout, SMBJ11CAHM3/H application, or SMBJ11CAHM3/H equivalent, key selection criteria include bidirectional clamping capability, 18.2 V max clamping voltage at rated IPPM, halogen-free RoHS-compliant construction (HM3 suffix), AEC-Q101 qualification readiness, and compatibility with automated SMT assembly on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional junction structure, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated silicon junction delivers sub-nanosecond response time and low dynamic impedance under transient stress.
The device is rated for 150 °C maximum junction temperature and exhibits a VBR temperature coefficient of +0.080 %/°C, ensuring stable clamping performance across industrial temperature ranges. Thermal resistance is 100 °C/W (junction-to-ambient) on standard PCB pad layout, supporting reliable power dissipation during repetitive surge events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before significant leakage; defines safe working margin below clamping threshold |
| VBR (min/max) | 12.2 V / 13.5 V at 1 mA - Confirmed breakdown range ensures predictable turn-on during overvoltage events |
| VC @ IPPM | ≤18.2 V at 33 A - Clamping voltage limits downstream component stress during 10/1000 µs surge |
| PPPM | 600 W - Peak pulse power handling per single 10/1000 µs waveform, duty cycle ≤0.01 % |
| ID @ VWM | ≤5.0 µA - Low reverse leakage preserves signal integrity and minimizes standby power loss |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height |
| Construction | Halogen-free, RoHS-compliant, AEC-Q101 qualified option available - meets automotive reliability and environmental compliance requirements |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking; terminals are matte tin-plated for solderability per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (in one direction) | One terminal of symmetrical PN junction; conducts during positive half-cycle surges |
| Cathode | Transient current entry (in opposite direction) | Second terminal of symmetrical PN junction; conducts during negative half-cycle surges |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC, differential, or floating signal lines without external polarity management |
| 600 W peak pulse power | Handles high-energy transients such as ISO 7637-2 Pulse 1/2a/5a in automotive and industrial environments |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage exposure to protected ICs while maintaining robust surge margin |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without moisture-induced damage; no bake-out required prior to assembly |
| Halogen-free HM3 suffix | Meets IEC 61249-2-21 and JEDEC J-STD-020 standards for green electronics manufacturing |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors exposed to load dump and relay coil flyback in factory automation systems. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector entry point to shunt transients before reaching ADC input or signal conditioner. Use Value: Limits induced voltage to ≤18.2 V during 33 A surges, preventing latch-up or permanent damage to 3.3 V/5 V signal chain components. | Use Scenario: Safeguarding LIN bus transceivers and microcontroller GPIOs in door module ECUs subjected to battery line transients. IC Role / Device Role / Timing Role: Secondary-level protection device located after primary fuse and upstream of ESD diodes, absorbing residual energy from ISO 16750-2 pulses. Use Value: Withstands 600 W peak pulses and maintains <5 µA leakage at 11 V, preserving bus signal fidelity and minimizing quiescent current drain. |
| Telecom Power Input Stage | Consumer USB-C Port Protection |
Use Scenario: Guarding 12 V DC input rails of PoE-powered network switches against lightning-induced surges on building wiring. IC Role / Device Role / Timing Role: First-line transient suppressor mounted adjacent to input connector, coordinated with upstream MOVs and downstream DC/DC converters. Use Value: Clamps 10/1000 µs surges to ≤18.2 V within nanoseconds, limiting stress on 15 V-rated input capacitors and controller ICs. | Use Scenario: Providing robust overvoltage immunity for USB-C CC and VBUS lines in portable docking stations exposed to hot-plug and cable ESD events. IC Role / Device Role / Timing Role: Bidirectional TVS placed on differential CC lines and unidirectional variant on VBUS, leveraging symmetry for polarity-agnostic protection. Use Value: 12.2–13.5 V VBR aligns with USB PD 3.0 fault thresholds; 18.2 V clamping prevents damage to USB-C controller ICs rated for 20 V absolute maximum. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA-E3/52 | RoHS-compliant commercial grade (E3), not halogen-free; same electrical specs and SMB package | Lacks halogen-free certification; suitable for non-automotive industrial use where green compliance is optional | Select when cost sensitivity outweighs halogen-free requirement and AEC-Q101 is not mandated |
| SMCJ11CAHM3 | Higher 1500 W PPPM, larger SMC (DO-214AB) package; identical VWM/VBR/VC ratings | Used where higher surge margin is needed but board space allows larger footprint (7.11 mm × 6.22 mm vs. 5.59 mm × 4.06 mm) | Choose when system-level surge testing exceeds 600 W requirements and thermal budget permits larger package |
Compared with SMBJ11CA-E3/52, SMBJ11CAHM3/H adds halogen-free compliance and AEC-Q101 qualification path; versus SMCJ11CAHM3, it trades 2.5× peak power for 30 % smaller PCB area and lower thermal mass - critical for compact, high-density layouts.
Availability
SMBJ11CAHM3/H is available at Aetrix Electronics and suitable for industrial sensor interface, automotive body control module, and telecom power input stage applications requiring stable component supply, halogen-free compliance, and AEC-Q101 qualification readiness.
Supply support for SMBJ11CAHM3/H 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 application-specific optimization.
The SMBJ series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where fast-response, high-power clamping and long-term stability are essential.
FAQ
What is the clamping voltage of SMBJ11CAHM3/H at its rated peak pulse current?
The SMBJ11CAHM3/H clamps to a maximum of 18.2 V at its rated peak pulse current of 33 A under a 10/1000 µs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads) and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ11CAHM3/H achieves this with low dynamic impedance and repeatable performance across its operational temperature range.
Is SMBJ11CAHM3/H suitable for automotive applications?
Yes, SMBJ11CAHM3/H is built to support automotive qualification: the HM3 suffix denotes halogen-free, RoHS-compliant construction, and the base SMBJ11CA family is AEC-Q101 qualified (ordering code SMBJ11CAHM3_X). While SMBJ11CAHM3/H itself is the commercial-grade variant, it shares identical electrical and thermal characteristics with AEC-Q101 versions and is commonly used in pre-qualification designs and modules where full automotive certification is pending.
How does the bidirectional design of SMBJ11CAHM3/H affect its placement on a PCB?
The bidirectional design of SMBJ11CAHM3/H eliminates polarity concerns during placement - there is no cathode band or marking, and either terminal may connect to either side of a differential or AC-coupled line. This simplifies layout, reduces assembly errors, and enables symmetric protection of balanced interfaces like RS-485, CAN, or audio lines without directional orientation checks. The SMBJ11CAHM3/H functions identically regardless of voltage polarity applied across its terminals.
What is the maximum operating temperature for SMBJ11CAHM3/H?
The SMBJ11CAHM3/H has a maximum operating junction temperature (TJ) of +150 °C and a storage temperature range of -55 °C to +150 °C. Its thermal resistance is 100 °C/W (junction-to-ambient) on standard PCB pad layout, meaning at 5.0 W steady-state dissipation, junction temperature rises ~500 °C above ambient - confirming that SMBJ11CAHM3/H is intended for transient-only operation, not continuous power dissipation. Real-world operation stays well within limits due to low duty cycle (<0.01 %) of surge events.
Does SMBJ11CAHM3/H meet any flammability or moisture sensitivity standards?
Yes, SMBJ11CAHM3/H meets UL 94 V-0 flammability rating for its molding compound and is rated MSL Level 1 per J-STD-020, with a maximum peak reflow temperature of 260 °C. These certifications confirm suitability for lead-free SMT processes without preconditioning bake, and ensure flame-retardant behavior in end equipment. The SMBJ11CAHM3/H also complies with JESD 201 Class 2 whisker resistance testing, supporting long-term reliability in vibration-prone environments.
SMBJ11CAHM3/H 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:
- 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/H FAQ
1.How can I place an order for SMBJ11CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11CAHM3/H 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/H reliable?
The price and inventory of SMBJ11CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ11CAHM3/H is usually 5 days.
3.What payment methods are accepted for SMBJ11CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11CAHM3/H?
SMBJ11CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11CAHM3/H 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/H?
For technical support, including SMBJ11CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11CAHM3/H requirements.
6.How does Aetrix verify that SMBJ11CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ11CAHM3/H 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/H meets industry standards.
7.What is the process for return or replacement of SMBJ11CAHM3/H?
All SMBJ11CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11CAHM3/H, 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/H part is unused and in its original packaging.
Return procedure for SMBJ11CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ11CAHM3/H Tags
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