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Vishay General Semiconductor - Diodes Division SMBJ15HE3/52
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- Part No.:
- SMBJ15HE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ15HE3/52.pdf
- Description:
- TVS DIODE 15VWM 26.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,495
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Product details
Overview
SMBJ15HE3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping inductive switching transients and ESD events on power and signal lines. It features a 15 V stand-off voltage (VWM), 24.4 V maximum clamping voltage at 24.6 A peak pulse current (IPPM), and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O protection, and DC power rail surge suppression.
For engineers reviewing the SMBJ15HE3/52 datasheet, SMBJ15HE3/52 pinout, SMBJ15HE3/52 application, or SMBJ15HE3/52 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance data, clamping performance under standardized surge conditions, and direct alternative part comparisons for robust circuit protection design.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its breakdown range of 16.7–18.5 V at 1 mA test current. Its low incremental surge resistance ensures minimal voltage overshoot during fast transients, while the glass-passivated junction enables stable, repeatable clamping over temperature (−55 °C to +150 °C).
Designed for automated SMT assembly, SMBJ15HE3/52 meets J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance requirements. The matte tin-plated leads support lead-free reflow up to 260 °C peak, and its AEC-Q101 qualification confirms suitability for automotive electronics where reliability under thermal cycling and mechanical stress is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 15 V - Maximum continuous reverse operating voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 16.7–18.5 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 24.4 V at IPPM = 24.6 A - Peak voltage seen by protected circuit during 10/1000 µs surge; directly limits stress on downstream ICs/MOSFETs. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability per single 10/1000 µs transient; validates protection against IEC 61000-4-5 Level 3 surges. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs derating above 25 °C ambient. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode-band marked end. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), with 1.52 mm lead spacing and matte tin-plated terminals solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | High-side connection in unidirectional configuration | Connected to protected line (e.g., 12 V rail); conducts during reverse overvoltage to shunt surge current to ground. |
| Anode | Low-side reference terminal | Typically tied to system ground or return path; completes clamping loop during transient event. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables reliable suppression of high-energy transients common in automotive load-dump and industrial motor switching. |
| AEC-Q101 qualified variant | Validates long-term reliability in automotive ECUs, body control modules, and ADAS sensor interfaces exposed to harsh thermal/mechanical stress. |
| Glass-passivated junction | Ensures stable VBR and low leakage (<1 µA at VWM) across temperature and lifetime, critical for low-power sensor nodes. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without pre-baking or special handling, reducing manufacturing cost and risk. |
| Low clamping ratio (VC/VWM = 1.63) | Minimizes voltage overshoot relative to operating rail, protecting 15 V-tolerant components such as CAN transceivers and microcontrollers. |
Applications
| Automotive Sensor Protection | Industrial DC Power Rail Clamping |
|---|---|
|
Use Scenario: Protecting 12 V supply inputs of radar modules, camera sensors, and LIN bus nodes from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between input rail and chassis ground to limit transient voltage to <24.4 V. Use Value: Prevents latch-up or gate oxide damage in downstream ASICs and image sensors during vehicle battery disconnect/reconnect events. |
Use Scenario: Safeguarding 24 V PLC I/O channels and programmable logic controller power supplies against inductive kickback from solenoid valves and relays. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input terminals to absorb repetitive 600 W surges without degradation. Use Value: Eliminates need for external fusing or redundant protection stages due to stable clamping and 100 A IFSM surge tolerance. |
| Consumer Device USB Port ESD Suppression | Telecom Line Interface Surge Guard |
|
Use Scenario: Secondary-level ESD protection on VBUS lines of USB-C ports in laptops and docking stations, downstream of primary polymer fuse. IC Role / Device Role / Timing Role: Fast-response unidirectional clamp limiting voltage rise to <24.4 V within <1 ns of 8 kV HBM discharge. Use Value: Maintains USB 2.0/3.2 signal integrity while meeting IEC 61000-4-2 Level 4 (±15 kV air) immunity requirements. |
Use Scenario: Front-end surge protection for Ethernet PHY power rails and auxiliary bias supplies in VoIP gateways and base station management units. IC Role / Device Role / Timing Role: High-energy TVS placed on 3.3 V or 5 V bias lines feeding PoE controllers and isolation amplifiers. Use Value: Withstands repeated lightning-induced surges (IEC 61000-4-5) without parameter shift, ensuring uptime in outdoor telecom infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A-E3/52 | Commercial-grade (non-AEC-Q101), identical VWM/VC/IPPM specs and SMB package. | Lacks automotive qualification; suitable for industrial/commercial designs not requiring AEC validation. | Select SMBJ15A-E3/52 when AEC-Q101 is not mandated and cost optimization is prioritized. |
| SAC15 | Same 15 V VWM and 24.4 V VC, but in smaller SOD-123FL package (RθJA = 150 °C/W vs. 100 °C/W). | Lower power handling margin above 75 °C ambient due to higher thermal resistance; limited to lower-duty-cycle surges. | Choose SAC15 only for space-constrained consumer PCBs where surge repetition rate is low and ambient stays <60 °C. |
Compared with SMBJ15A-E3/52, SMBJ15HE3/52 adds AEC-Q101 qualification without sacrificing clamping performance or footprint; versus SAC15, it delivers superior thermal management and higher sustained surge endurance in automotive and industrial deployments.
Availability
SMBJ15HE3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC power rails, and telecom line interface protection requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for SMBJ15HE3/52 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, efficiency, and application-specific performance.
The SMBJ series is engineered for high-reliability transient suppression in automotive, industrial, and communications systems - delivering consistent clamping, AEC-Q101 validation, and robust SMT manufacturability in the SMB footprint.
FAQ
What is the clamping voltage of SMBJ15HE3/52 at its rated peak pulse current?
The SMBJ15HE3/52 has a maximum clamping voltage (VC) of 24.4 V at its specified peak pulse current (IPPM) of 24.6 A, measured under the standard 10/1000 µs waveform. This value is guaranteed per Vishay's datasheet revision 09-Jan-2024 (Document Number: 88392) and defines the upper voltage limit imposed on protected circuits during surge events. The SMBJ15HE3/52 maintains this clamping performance across its full operating temperature range.
Is SMBJ15HE3/52 suitable for automotive applications?
Yes, SMBJ15HE3/52 is AEC-Q101 qualified, confirming its compliance with rigorous automotive reliability standards including temperature cycling, humidity bias, and mechanical shock testing. Its 150 °C maximum junction temperature, MSL Level 1 rating, and matte tin-plated leads support use in engine control units, ADAS camera modules, and body electronics. The "HE3" suffix explicitly denotes the AEC-Q101–qualified RoHS-compliant version of SMBJ15HE3/52.
How does SMBJ15HE3/52 differ from SMBJ15A-E3/52?
SMBJ15HE3/52 and SMBJ15A-E3/52 share identical electrical specifications (VWM = 15 V, VC = 24.4 V, PPPM = 600 W) and SMB (DO-214AA) package, but SMBJ15HE3/52 is AEC-Q101 qualified while SMBJ15A-E3/52 is commercial-grade only. The HE3 variant undergoes additional automotive stress testing and is intended for safety-critical vehicle subsystems. Both parts use the same tape-and-reel packaging (52 = 750 pcs per 7" reel).
What is the thermal resistance of SMBJ15HE3/52, and how does it affect derating?
The SMBJ15HE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. This value governs power derating above 25 °C ambient: for example, at 75 °C ambient, the maximum allowable continuous power dissipation drops to approximately 2.5 W (calculated via linear derating curve in Fig. 2 of the datasheet). SMBJ15HE3/52's RθJA enables effective heat dissipation in compact automotive and industrial layouts.
Does SMBJ15HE3/52 have polarity marking, and how is it identified?
Yes, SMBJ15HE3/52 is a unidirectional TVS diode with clear polarity marking: a visible cathode band is printed on the banded end of the SMB (DO-214AA) package. Per Vishay documentation, this band identifies the cathode terminal, which must be connected toward the protected line (e.g., 12 V rail), while the anode connects to ground. Bidirectional variants (e.g., SMBJ15CA) omit this marking - confirming SMBJ15HE3/52's unidirectional function.
SMBJ15HE3/52 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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 26.9V
- Current - Peak Pulse (10/1000µs):
- 22.3A
- 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)
SMBJ15HE3/52 FAQ
1.How can I place an order for SMBJ15HE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ15HE3/52 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 SMBJ15HE3/52 reliable?
The price and inventory of SMBJ15HE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ15HE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ15HE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ15HE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ15HE3/52?
SMBJ15HE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ15HE3/52 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 SMBJ15HE3/52?
For technical support, including SMBJ15HE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ15HE3/52 requirements.
6.How does Aetrix verify that SMBJ15HE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ15HE3/52 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 SMBJ15HE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ15HE3/52?
All SMBJ15HE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ15HE3/52, 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 SMBJ15HE3/52 part is unused and in its original packaging.
Return procedure for SMBJ15HE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ15HE3/52 Tags
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