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Vishay General Semiconductor - Diodes Division SMBJ11CAHM3_A/I
- Part No.:
- SMBJ11CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11CAHM3_A/I.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,648
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Product details
Overview
SMBJ11CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the 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 - deployed in industrial sensor interfaces and telecom line protection.
For engineers reviewing the SMBJ11CAHM3_A/I datasheet, SMBJ11CAHM3_A/I pinout, SMBJ11CAHM3_A/I application, or SMBJ11CAHM3_A/I equivalent, this page delivers verified electrical specs, bidirectional clamping behavior, thermal resistance (RθJA = 100 °C/W), AEC-Q101 qualification status, and halogen-free RoHS-compliant construction per Vishay's HM3 suffix.
Technical Context
This device operates as a bidirectional avalanche diode with symmetrical clamping in both polarities, enabling transient suppression without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<5.0 µA at VWM), while the 100 °C/W junction-to-ambient thermal resistance requires defined PCB copper pad layout (0.2" × 0.2") for rated 600 W pulse handling.
The SMBJ11CAHM3_A/I meets J-STD-020 MSL Level 1 (peak reflow 260 °C) and supports automotive-grade reliability via AEC-Q101 qualification - confirmed by Vishay's HM3 suffix designation. It exhibits a temperature coefficient of VBR of +0.080 %/°C, ensuring predictable voltage drift over its -55 °C to +150 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 11 V - maximum continuous reverse voltage before significant conduction begins; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 12.2–13.5 V at 1 mA - guaranteed avalanche initiation range; ensures consistent turn-on across production lots |
| VC (Clamping Voltage) | ≤18.2 V at IPPM = 33 A (10/1000 µs) - limits downstream IC stress during ESD or lightning-induced surges |
| PPPM (Peak Pulse Power) | 600 W - sustained transient energy absorption capability under standardized 10/1000 µs waveform |
| IPPM (Peak Pulse Current) | 33 A - maximum non-repetitive surge current the device can safely divert without degradation |
| RθJA (Thermal Resistance) | 100 °C/W - dictates required PCB copper area (0.2" × 0.2" pads per terminal) to maintain TJ ≤ 150 °C |
| TJmax | +150 °C - maximum junction temperature; enables operation in high-ambient industrial environments |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche terminals | No polarity distinction - either terminal serves as anode or cathode depending on transient polarity; enables placement without orientation check |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| 600 W peak pulse power (10/1000 µs) | Handles high-energy transients from inductive switching or lightning surges in industrial control systems |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive subsystems requiring extended temperature cycling, humidity, and mechanical robustness |
| Halogen-free & RoHS-compliant | Meets environmental compliance mandates for consumer, telecom, and industrial end equipment |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow processes without moisture-related failure risk |
Applications
| Industrial Sensor Interface Protection | Telecom Line Surge Suppression |
|---|---|
|
Use Scenario: Protecting analog output lines (e.g., 4–20 mA current loops) in PLC I/O modules from field-induced transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across signal and return lines to clamp ±1 kV EFT or 10/700 µs telecom surges. Use Value: Limits voltage excursion to ≤18.2 V, preventing damage to precision DACs and op-amps while maintaining signal integrity. |
Use Scenario: Shielding Ethernet PHY interface lines (e.g., RJ45 magnetics secondary side) against induced lightning surges. IC Role / Device Role / Timing Role: Primary-level TVS on differential pairs to absorb common-mode transients before reaching PHY IC. Use Value: Withstands 600 W pulses without degradation, preserving data link stability in outdoor network equipment. |
| Automotive Body Control Module (BCM) | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Safeguarding LIN bus transceivers and microcontroller GPIOs in door module ECUs exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element on LIN data line, leveraging AEC-Q101 qualification for automotive reliability. Use Value: Maintains functional safety by limiting transient overvoltage to <18.2 V during 12 V system load dump events. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machine control boards. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to shunt inductive kickback energy away from MCU and driver ICs. Use Value: Absorbs 33 A surge peaks without failure, extending board lifetime in high-cycle domestic appliances. |
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 electrical specs, but RoHS-compliant commercial grade (E3) without halogen-free or AEC-Q101 qualification | Lacks automotive qualification and halogen-free certification; suitable only for non-automotive commercial designs | Select when AEC-Q101 and halogen-free requirements are not mandated |
| SAC11CA | Same VWM/VBR/VC, but SOD-123FL package (smaller footprint, lower IPPM = 25 A, PPPM = 400 W) | Lower surge capacity and different thermal profile; requires layout revision and derating for 600 W events | Choose only if space-constrained and transient energy is confirmed ≤400 W |
Compared with SMBJ11CA-E3/52 and SAC11CA, the SMBJ11CAHM3_A/I uniquely combines AEC-Q101 qualification, halogen-free construction, and full 600 W/33 A surge rating in the industry-standard SMB package - making it the only option meeting automotive and green compliance simultaneously without performance trade-offs.
Availability
SMBJ11CAHM3_A/I is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom line protection, automotive body control modules, and consumer appliance motor drive circuits requiring stable component supply and long-term lifecycle support.
Supply support for SMBJ11CAHM3_A/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMBJ series is engineered for robust transient suppression in harsh environments - targeting industrial automation, automotive electronics, and communications infrastructure where high-energy surge immunity is critical.
FAQ
What does the "HM3" suffix indicate in SMBJ11CAHM3_A/I?
The "HM3" suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Unlike E3 or M3 variants, SMBJ11CAHM3_A/I is certified for automotive use and meets strict environmental standards - confirmed in Vishay's ordering information table and mechanical data section.
Is SMBJ11CAHM3_A/I unidirectional or bidirectional?
SMBJ11CAHM3_A/I is explicitly bidirectional, as indicated by the "CA" in its part number and confirmed in the "DEVICES FOR BIDIRECTION APPLICATIONS" section. Electrical characteristics apply identically in both directions, and the device has no polarity marking - unlike unidirectional "A"-suffix variants.
What is the maximum clamping voltage for SMBJ11CAHM3_A/I at rated surge current?
The maximum clamping voltage (VC) for SMBJ11CAHM3_A/I is 18.2 V at IPPM = 33 A with a 10/1000 µs waveform. This value is specified in the "ELECTRICAL CHARACTERISTICS" table under the SMBJ11A row and applies directly to SMBJ11CAHM3_A/I due to identical core TVS die and SMB package construction.
Does SMBJ11CAHM3_A/I require special PCB layout considerations?
Yes - SMBJ11CAHM3_A/I requires minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve its rated 600 W peak pulse power and 100 °C/W RθJA. Layout deviations reduce thermal dissipation and may cause premature failure during repetitive surge events.
How does SMBJ11CAHM3_A/I differ from SMBJ11A in terms of functionality?
SMBJ11CAHM3_A/I is bidirectional with symmetrical clamping, while SMBJ11A is unidirectional and features a cathode band marking. Both share identical VWM (11 V), VBR (12.2–13.5 V), and VC (18.2 V), but SMBJ11CAHM3_A/I supports AC or floating-line protection without polarity constraints - a key distinction confirmed in Vishay's "LINKS TO ADDITIONAL RESOURCES" section.
SMBJ11CAHM3_A/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:
- Obsolete
- 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_A/I FAQ
1.How can I place an order for SMBJ11CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11CAHM3_A/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_A/I reliable?
The price and inventory of SMBJ11CAHM3_A/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_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ11CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11CAHM3_A/I?
SMBJ11CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11CAHM3_A/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_A/I?
For technical support, including SMBJ11CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11CAHM3_A/I requirements.
6.How does Aetrix verify that SMBJ11CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ11CAHM3_A/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_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ11CAHM3_A/I?
All SMBJ11CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11CAHM3_A/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_A/I part is unused and in its original packaging.
Return procedure for SMBJ11CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ11CAHM3_A/I Tags
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DESD3V3E1BL-7B
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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