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Vishay General Semiconductor - Diodes Division SMBJ11AHE3/5B
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- Part No.:
- SMBJ11AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11AHE3/5B.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,609
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Product details
Overview
SMBJ11AHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 11 V stand-off voltage (VWM), 12.2–13.5 V breakdown voltage (VBR) at 1 mA, 18.2 V maximum clamping voltage (VC) at 33 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed on power rails and signal lines in industrial sensor interfaces.
For engineers reviewing the SMBJ11AHE3/5B datasheet, SMBJ11AHE3/5B pinout, SMBJ11AHE3/5B application, or SMBJ11AHE3/5B equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (–55 to +150 °C), and RoHS-compliant packaging details required for automotive-grade ESD/surge protection design-in.
Technical Context
The SMBJ11AHE3/5B operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold (12.2–13.5 V), thereby shunting transient energy to ground while maintaining low clamping voltage (18.2 V @ 33 A). Its glass-passivated junction ensures stable leakage performance (<5 µA at VWM) and fast response time (<1 ns).
Designed for automated SMT assembly, it meets J-STD-020 MSL Level 1 (peak reflow 260 °C), has matte tin-plated leads compliant with JESD 22-B102, and supports repetitive surge duty cycle ≤0.01 % under derated conditions above 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 11 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 12.2–13.5 V @ 1 mA - Confirmed avalanche onset range; ensures predictable triggering during transients. |
| VC (Clamping Voltage) | 18.2 V @ 33 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; limits stress on downstream ICs. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy absorption capability without failure; validated per IEC 61000-4-5. |
| IPPM (Peak Pulse Current) | 33 A - Maximum non-repetitive surge current handled at rated waveform; determines PCB trace and grounding requirements. |
| TJmax | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial environments. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads; informs heatsinking needs. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated for solderability per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse surge return path | Connected to protected line (e.g., 12 V rail or sensor output); conducts during overvoltage events to divert current to ground. |
| Cathode | Reverse-biased terminal / Clamping reference | Marked with band; tied to system ground or lower-potential node; establishes polarity-sensitive clamping behavior. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensors; supports extended temperature and reliability requirements. |
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy surges from load dump or inductive switching without degradation - critical for 12 V vehicle systems. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes voltage overshoot during clamping; protects 3.3 V/5 V logic interfaces even when placed upstream of LDOs. |
| MSL Level 1 moisture sensitivity | Enables direct placement without baking; compatible with standard lead-free reflow profiles up to 260 °C peak. |
| Glass-passivated junction | Ensures stable leakage (<5 µA at VWM) and long-term reliability under thermal cycling and humidity exposure. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from ISO 7637-2 pulses and ESD events in engine compartments. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between signal line and chassis ground, absorbing transients before they reach the transceiver input stage. Use Value: Maintains signal integrity under 100 V/500 ms load dump and ±8 kV contact ESD per IEC 61000-4-2, preventing latch-up or permanent damage to ASICs. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers against induced surges from relay coil flyback and motor drive noise in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff-rated TVS on 24 V DC input lines, triggered only during overvoltage events to avoid false triggering during normal operation. Use Value: Enables reliable operation with <5 µA leakage at 11 V, eliminating false trips while clamping 33 A surges to ≤18.2 V - preserving optocoupler and microcontroller input thresholds. |
| Consumer Power Adapter Input | Telecom Line Interface Protection |
|
Use Scenario: Secondary-side surge suppression on 12 V DC outputs of wall adapters used in smart home hubs and set-top boxes exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Final-stage TVS on regulated DC output, acting as last-line defense after primary MOV and secondary filter stages. Use Value: Provides precise 11 V standoff and 18.2 V clamping to protect USB-PD controllers and PMICs without compromising efficiency or regulation stability. |
Use Scenario: Protecting Ethernet PHY interface pins and PoE detection circuits in network switches and IP cameras from induced transients on RJ45 lines. IC Role / Device Role / Timing Role: Unidirectional TVS on VDDIO supply rails feeding PHY ICs, referenced to local ground plane to limit common-mode overvoltage. Use Value: Delivers sub-1 ns response and 600 W pulse handling to meet GR-1089-CORE telecom immunity requirements without adding capacitance that degrades 100BASE-TX signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11AHM3/5B | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification; same SMB package and pinout. | Required where halogen-free compliance is mandated by OEM environmental specifications (e.g., EU automotive Tier 1s). | Select SMBJ11AHM3/5B when material declarations require bromine/chlorine restriction beyond standard RoHS. |
| SMCJ11AHE3/5B | Same VWM, VBR, and VC, but in larger SMC (DO-214AB) package; higher PPPM = 1500 W and IPPM = 83 A due to improved thermal mass. | Suitable for higher-energy surge environments (e.g., outdoor telecom enclosures, solar inverters) where 600 W is insufficient. | Choose SMCJ11AHE3/5B only if layout allows larger footprint and system-level testing confirms need for >600 W rating. |
Compared with SMBJ11AHM3/5B, SMBJ11AHE3/5B offers identical protection performance with standard RoHS compliance; versus SMCJ11AHE3/5B, it trades 2.5× higher surge capacity for 30 % smaller PCB area - making it optimal for space-constrained automotive ECUs and compact industrial modules.
Availability
SMBJ11AHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and consumer power adapter outputs requiring stable component supply with AEC-Q101 qualification and RoHS compliance.
Supply support for SMBJ11AHE3/5B 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMBJ series is engineered for high-reliability transient suppression in automotive, industrial, and telecom systems - delivering consistent clamping, low leakage, and AEC-Q101 validation for harsh-environment deployment.
FAQ
What is the maximum clamping voltage of SMBJ11AHE3/5B under a 10/1000 µs surge?
The SMBJ11AHE3/5B has a maximum clamping voltage (VC) of 18.2 V when subjected to a 33 A peak pulse current with a 10/1000 µs waveform. This value is measured per standard test conditions (TA = 25 °C) and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring compatibility with 3.3 V, 5 V, or 12 V ICs downstream of SMBJ11AHE3/5B.
Is SMBJ11AHE3/5B qualified for automotive use?
Yes, SMBJ11AHE3/5B is AEC-Q101 qualified, as confirmed in Vishay's official documentation (Document Number 88392, Revision 09-Jan-2024). This qualification validates its performance across –55 °C to +150 °C operating temperature, mechanical shock/vibration resistance, and long-term reliability under automotive stress conditions - making SMBJ11AHE3/5B suitable for engine control, body electronics, and ADAS subsystems.
What does the "HE3" suffix indicate in SMBJ11AHE3/5B?
The "HE3" suffix in SMBJ11AHE3/5B denotes RoHS-compliant construction with AEC-Q101 qualification. Specifically, "H" indicates AEC-Q101 qualification, "E3" signifies RoHS compliance (lead-free, no restricted substances per EU Directive 2011/65/EU), and the full suffix confirms both certifications are applied to this exact part number - distinguishing it from commercial-grade E3-only or halogen-free HM3 variants.
Can SMBJ11AHE3/5B be used in bidirectional protection circuits?
No, SMBJ11AHE3/5B is a unidirectional TVS diode, identified by its cathode band marking and specified breakdown behavior only in reverse bias. For bidirectional protection, Vishay offers the SMBJ11CA variant (with "CA" suffix); using SMBJ11AHE3/5B in bidirectional configurations would result in forward conduction during negative transients and potential device failure - always match polarity to circuit topology.
What is the thermal resistance junction-to-ambient for SMBJ11AHE3/5B?
The typical thermal resistance junction-to-ambient (RθJA) for SMBJ11AHE3/5B is 100 °C/W, measured on standard 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value guides thermal design - for example, at 5 W steady-state dissipation, junction temperature rise would be ~500 °C above ambient, confirming SMBJ11AHE3/5B is intended for pulsed, not continuous, power dissipation.
SMBJ11AHE3/5B 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:
- 1
- Bidirectional Channels:
- -
- 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)
SMBJ11AHE3/5B FAQ
1.How can I place an order for SMBJ11AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11AHE3/5B 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 SMBJ11AHE3/5B reliable?
The price and inventory of SMBJ11AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ11AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ11AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11AHE3/5B?
SMBJ11AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11AHE3/5B 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 SMBJ11AHE3/5B?
For technical support, including SMBJ11AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11AHE3/5B requirements.
6.How does Aetrix verify that SMBJ11AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ11AHE3/5B 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 SMBJ11AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ11AHE3/5B?
All SMBJ11AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11AHE3/5B, 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 SMBJ11AHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ11AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ11AHE3/5B Tags
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