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Vishay General Semiconductor - Diodes Division SMBJ11HE3/5B
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- Part No.:
- SMBJ11HE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11HE3/5B.pdf
- Description:
- TVS DIODE 11VWM 20.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,282
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Product details
Overview
SMBJ11HE3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in 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 of industrial sensor interfaces.
For engineers reviewing the SMBJ11HE3/5B datasheet, SMBJ11HE3/5B pinout, SMBJ11HE3/5B application, or SMBJ11HE3/5B equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (–55 to +150 °C), and RoHS-compliant packaging details for automotive-grade ESD/surge protection design-in.
Technical Context
This unidirectional TVS diode operates as a fast-acting shunt clamp during transient events, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response time and low incremental surge resistance. Its 18.2 V clamping voltage at 33 A ensures reliable protection of downstream 12 V logic and analog circuitry without overstressing IC inputs.
The device is rated for 100 A non-repetitive forward surge current (IFSM) and exhibits a temperature coefficient of VBR of +0.080 %/°C, enabling stable performance across automotive ambient conditions. It meets MSL Level 1 per J-STD-020 and supports reflow soldering up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before clamping begins; sets safe margin above nominal 12 V rail. |
| VBR (min/max) | 12.2 V / 13.5 V at IT = 1 mA - Confirmed breakdown threshold ensuring predictable turn-on during transients. |
| VC @ IPPM | 18.2 V at 33 A - Clamped voltage under 600 W 10/1000 µs surge; limits stress on protected 12 V ICs. |
| PPPM | 600 W - Peak pulse power handling capability; sufficient for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges. |
| IFSM | 100 A - Single half-sine surge rating (8.3 ms); supports high-energy load dump protection in automotive systems. |
| TJ Range | –55 °C to +150 °C - Full automotive-grade junction temperature range; validated for under-hood deployment. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads; informs board-level thermal design. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads. Cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to ground or lower-potential node in unidirectional clamp configuration. |
| Cathode | Current exit terminal during reverse-biased clamping | Connected to protected line (e.g., 12 V supply or CAN_H); band-marked end defines polarity. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics. |
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy transients common in 12 V vehicle electrical systems without degradation. |
| Glass passivated junction | Ensures stable leakage current (<5 µA at VWM) and long-term reliability under thermal cycling. |
| MSL Level 1, 260 °C peak reflow | Enables compatibility with standard lead-free SMT assembly processes without moisture sensitivity concerns. |
| RoHS-compliant, halogen-free option available | Base P/NHE3 denotes RoHS-compliant and AEC-Q101 qualified; meets global environmental compliance mandates. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply lines in engine control modules against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between battery rail and LDO input. Use Value: Limits clamped voltage to 18.2 V during 33 A surge, preventing damage to 24 V-tolerant regulators and microcontrollers. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) in factory automation sensors. IC Role / Device Role / Timing Role: Bidirectional-capable variant not used; SMBJ11HE3/5B serves as unidirectional clamp to ground on signal return path. Use Value: Sub-ns response and <5 µA leakage at 11 V ensure minimal impact on precision current-loop accuracy while blocking ESD events. |
| Telecom DC Power Input Protection | Consumer Device USB Port Surge Suppression |
|
Use Scenario: Guarding primary DC input of PoE-powered network switches against lightning-induced surges. IC Role / Device Role / Timing Role: First-stage TVS on 48 V input rail, upstream of DC-DC converter. Use Value: 600 W rating and 100 °C/W RθJA allow effective energy absorption without thermal runaway on standard PCB layouts. |
Use Scenario: Adding secondary-level surge immunity to USB VBUS lines in smart home hubs. IC Role / Device Role / Timing Role: Unidirectional clamp from VBUS to ground, sized for 5 V operation with 11 V VWM. Use Value: 18.2 V clamping prevents latch-up in USB controller ICs during contact discharge ESD (IEC 61000-4-2 ±8 kV). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11A-E3/5B | No AEC-Q101 qualification; commercial-grade only; identical electrical specs and SMB package. | Not suitable for automotive production; acceptable for industrial or consumer prototyping where qualification is not mandated. | Select SMBJ11A-E3/5B when cost optimization is prioritized and automotive qualification is unnecessary. |
| SAC11H | Same VWM (11 V) but higher VC (20.0 V at 30 A); lower PPPM (400 W); TO-277 package (smaller footprint, no cathode band). | Limited surge handling; suited for space-constrained designs where 600 W margin is not required. | Choose SAC11H only if board area is critical and peak surge energy remains below 400 W capability. |
Compared with SMBJ11A-E3/5B, SMBJ11HE3/5B adds AEC-Q101 validation for automotive use without altering electrical behavior; versus SAC11H, it trades footprint size for 50 % higher surge power rating and tighter clamping - making it preferable for mission-critical 12 V rail protection.
Availability
SMBJ11HE3/5B is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and consumer USB power delivery systems requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for SMBJ11HE3/5B 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 automotive-grade qualification.
The SMBJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where robustness against ESD, lightning, and load dump is mandatory.
FAQ
What is the clamping voltage of SMBJ11HE3/5B and how is it measured?
The SMBJ11HE3/5B has a maximum clamping voltage (VC) of 18.2 V, measured at a peak pulse current (IPPM) of 33 A using a 10/1000 µs waveform. This value is guaranteed per Vishay's datasheet (Document Number: 88392, Rev. 09-Jan-2024) and reflects the voltage seen across the SMBJ11HE3/5B terminals during standardized surge testing - critical for verifying protection margins of downstream 12 V ICs.
Is SMBJ11HE3/5B qualified for automotive applications?
Yes, SMBJ11HE3/5B is AEC-Q101 qualified, as confirmed by its "HE3" suffix and documentation in Vishay's official datasheet. This qualification validates the SMBJ11HE3/5B for use in automotive electronic systems including engine control, body electronics, and ADAS modules where reliability under thermal cycling, humidity, and mechanical stress is required.
What does the "5B" in SMBJ11HE3/5B indicate?
The "5B" in SMBJ11HE3/5B specifies the packaging format: 13-inch diameter plastic tape and reel, containing 3200 units. This differs from "52", which denotes 7-inch reels of 750 units. The "HE3" portion confirms RoHS-compliance and AEC-Q101 qualification, distinguishing SMBJ11HE3/5B from commercial-grade variants like SMBJ11A-E3/5B.
Can SMBJ11HE3/5B be used in bidirectional protection circuits?
No, SMBJ11HE3/5B is a unidirectional TVS diode, identifiable by its cathode band marking. For bidirectional protection, Vishay offers the SMBJ11CA variant. Using SMBJ11HE3/5B in a bidirectional configuration would result in forward conduction during negative transients, potentially damaging the device or failing to suppress the event - always match polarity to circuit requirements.
What is the thermal resistance of SMBJ11HE3/5B and how does it affect layout?
The SMBJ11HE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value directly impacts PCB copper pour sizing: reducing pad area increases thermal impedance, risking junction overheating during repetitive surges. Layouts must adhere to Vishay's recommended mounting pad dimensions to maintain rated 600 W pulse capability.
SMBJ11HE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 20.1V
- Current - Peak Pulse (10/1000µs):
- 29.9A
- 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)
SMBJ11HE3/5B FAQ
1.How can I place an order for SMBJ11HE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11HE3/5B 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 SMBJ11HE3/5B reliable?
The price and inventory of SMBJ11HE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ11HE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ11HE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11HE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11HE3/5B?
SMBJ11HE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11HE3/5B 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 SMBJ11HE3/5B?
For technical support, including SMBJ11HE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11HE3/5B requirements.
6.How does Aetrix verify that SMBJ11HE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ11HE3/5B 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 SMBJ11HE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ11HE3/5B?
All SMBJ11HE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11HE3/5B, 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 SMBJ11HE3/5B part is unused and in its original packaging.
Return procedure for SMBJ11HE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ11HE3/5B Tags
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