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Vishay General Semiconductor - Diodes Division SMBJ75HE3/52
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- Part No.:
- SMBJ75HE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ75HE3/52.pdf
- Description:
- TVS DIODE 75VWM 134VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,518
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Product details
Overview
SMBJ75HE3/52 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 DC power rails and signal lines. It features a 75 V stand-off voltage (VWM), 83.3–92.1 V breakdown voltage (VBR) at 1 mA, 121 V maximum clamping voltage (VC) at 5.0 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive ECUs, industrial sensor interfaces, and telecom power supplies.
For engineers reviewing the SMBJ75HE3/52 datasheet, SMBJ75HE3/52 pinout, SMBJ75HE3/52 application, or SMBJ75HE3/52 equivalent, key selection criteria include its AEC-Q101 qualification, low incremental surge resistance, fast response time (<1 ps), and compatibility with automated SMT assembly on standard PCB pad layouts per JEDEC DO-214AA footprint.
Technical Context
This TVS diode operates as a unidirectional clamping device: reverse-biased during normal operation (blocking up to 75 V), then avalanche-conducting within nanoseconds when transients exceed VBR. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and repeatable clamping performance across temperature (-55 °C to +150 °C).
The SMBJ75HE3/52 is rated for 600 W peak pulse power (10/1000 µs), 100 A non-repetitive forward surge current (8.3 ms half-sine), and exhibits a typical thermal resistance of 100 °C/W (junction-to-ambient) on standard 5.0 mm × 5.0 mm copper pads - enabling reliable operation without heatsinking in space-constrained designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 75 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 83.3–92.1 V at 1.0 mA - Avalanche onset range; ensures predictable turn-on during transients |
| VC (Clamping Voltage) | 121 V at 5.0 A - Peak voltage seen by protected circuit during 10/1000 µs surge; limits stress on downstream ICs |
| PPPM (Peak Pulse Power) | 600 W - Withstands high-energy surges (e.g., ISO 7637-2 Pulse 1/2a/5a) without failure |
| IPPM (Peak Pulse Current) | 5.0 A - Corresponds to 121 V clamping; validates protection level for defined surge waveforms |
| TJmax | +150 °C - Enables use in under-hood automotive environments and high-temperature industrial enclosures |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads; meets UL 94 V-0, MSL Level 1 (260 °C reflow peak), and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when VWM exceeded |
| Anode | Reference/ground return path | Typically tied to system ground plane; completes clamping loop with minimal inductance |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Protects against high-energy transients like load dump (ISO 7637-2 Pulse 5a) without degradation |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive electronics requiring long-term reliability in harsh thermal/vibration environments |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage overshoot during clamping - critical for safeguarding 75 V-rated MOSFETs or controllers |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage (<1.0 µA) across lifetime and temperature extremes |
| MSL Level 1 moisture sensitivity | Enables direct placement into reflow ovens without baking - reduces manufacturing cost and handling risk |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
|
Use Scenario: Protects 12 V supply rail from load-dump transients (up to 35 V, 400 ms) and inductive switching spikes in door lock actuators and lighting drivers. IC Role / Device Role: Unidirectional TVS placed between fused battery input and LDO regulator input. Use Value: Clamps surges to ≤121 V, preventing damage to 36 V-rated input capacitors and enabling compliance with ISO 16750-2. |
Use Scenario: Shields 24 V digital input optocoupler interface from field-wiring induced surges (IEC 61000-4-4, 4 kV EFT). IC Role / Device Role: Primary front-end protection on isolated 24 V input channel before series resistor and opto-LED. Use Value: Limits transient voltage to <121 V, ensuring optocoupler CTR stability and avoiding false triggering during EMC testing. |
| Telecom Power Supply DC Output | Motor Drive Gate Driver Supply |
|
Use Scenario: Safeguards +48 V DC output of telecom rectifier modules against lightning-induced surges on distribution bus. IC Role / Device Role: Parallel-connected TVS on output rail, coordinated with upstream MOV and filter inductors. Use Value: Absorbs 600 W pulses without thermal runaway, maintaining output regulation during 10/1000 µs surges per IEC 61000-4-5. |
Use Scenario: Protects isolated 15 V gate driver supply (e.g., for SiC MOSFETs) from Miller-induced voltage spikes during high-dV/dt switching. IC Role / Device Role: Local clamping device mounted directly at gate driver IC VDD pin. Use Value: Fast response (<1 ps) and low VC prevent gate oxide overstress and ensure reliable turn-off during fault conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A-E3/52 | Commercial-grade (non-AEC-Q101); identical electrical specs but no automotive qualification testing | Lacks validation for automotive temperature cycling, HTRB, and mechanical shock per AEC-Q101 | Select SMBJ75A-E3/52 only for industrial or consumer applications where automotive reliability is not required |
| SMCJ75AHE3_A/H | Higher-power SMC (DO-214AB) package; same VWM/VBR, but 1500 W PPPM and 12.3 A IPPM | Requires larger PCB footprint and higher thermal mass; suited for systems with >1 kV surge requirements | Choose SMCJ75AHE3_A/H when surge energy exceeds 600 W capability or when legacy SMC layout exists |
Compared with SMBJ75A-E3/52, the SMBJ75HE3/52 adds AEC-Q101 qualification for automotive deployment, while versus SMCJ75AHE3_A/H, it trades lower surge capacity for compact SMB footprint and reduced board area - making SMBJ75HE3/52 optimal for space-constrained AEC-Q101-compliant designs.
Availability
SMBJ75HE3/52 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, and telecom DC power rail stabilization requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBJ75HE3/52 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-reliability transient suppression in automotive, industrial, and telecom infrastructure - delivering consistent clamping performance under repetitive surge stress and extreme ambient conditions.
FAQ
What is the clamping voltage of SMBJ75HE3/52 at its rated peak pulse current?
The SMBJ75HE3/52 has a maximum clamping voltage (VC) of 121 V at 5.0 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuits during surge events. The SMBJ75HE3/52 maintains this clamping performance across its qualified operating temperature range (-55 °C to +150 °C), supporting robust design margins in automotive and industrial applications.
Is SMBJ75HE3/52 suitable for bidirectional transient protection?
No, SMBJ75HE3/52 is a unidirectional TVS diode - its cathode band indicates polarity, and it conducts only in reverse bias above VBR. For bidirectional protection, Vishay offers the SMBJ75CA variant. Using SMBJ75HE3/52 in bidirectional configurations risks forward conduction during negative transients and inadequate protection. Always verify polarity alignment during PCB layout; the SMBJ75HE3/52 must be oriented with cathode toward the protected line and anode to ground.
Does SMBJ75HE3/52 meet automotive qualification standards?
Yes, the "HE3" suffix explicitly denotes AEC-Q101 qualification. The SMBJ75HE3/52 has undergone stress testing including high-temperature reverse bias (HTRB), temperature cycling, mechanical shock, and ESD per AEC-Q101 Rev D. This makes it suitable for automotive applications such as body control modules, infotainment power rails, and ADAS sensor interfaces where component-level reliability is mandated. Documentation of test reports is available upon request from Vishay or Aetrix Electronics.
What is the maximum operating temperature for SMBJ75HE3/52?
The SMBJ75HE3/52 has a maximum junction temperature (TJmax) of +150 °C and an operating storage temperature range of -55 °C to +150 °C. Its thermal resistance (RθJA) is 100 °C/W on standard 5.0 mm × 5.0 mm copper pads, allowing operation at full power rating up to +85 °C ambient without derating. At higher ambient temperatures, power dissipation must be reduced per the derating curve in Figure 2 of the Vishay datasheet 88392. The SMBJ75HE3/52 remains fully functional throughout this range when properly mounted.
How does the SMBJ75HE3/52 compare to SMAJ75HE3 in terms of surge capability?
The SMBJ75HE3/52 delivers 600 W peak pulse power (10/1000 µs), whereas the SMAJ75HE3 is rated for 400 W - a 50 % higher surge capacity. This difference arises from the larger SMB package's superior thermal mass and lower junction-to-lead resistance (RθJL = 20 °C/W vs. ~30 °C/W for SMA). In practice, the SMBJ75HE3/52 sustains higher surge currents (5.0 A vs. 3.3 A) at the same clamping voltage, making it preferable for applications exposed to ISO 7637-2 Pulse 5a or IEC 61000-4-5 Level 3/4 threats. Both share identical VWM, VBR, and AEC-Q101 qualification.
SMBJ75HE3/52 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):
- 75V
- Voltage - Breakdown (Min):
- 83.3V
- Voltage - Clamping (Max) @ Ipp:
- 134V
- Current - Peak Pulse (10/1000µs):
- 4.5A
- 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)
SMBJ75HE3/52 FAQ
1.How can I place an order for SMBJ75HE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ75HE3/52 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 SMBJ75HE3/52 reliable?
The price and inventory of SMBJ75HE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ75HE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ75HE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ75HE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ75HE3/52?
SMBJ75HE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ75HE3/52 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 SMBJ75HE3/52?
For technical support, including SMBJ75HE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ75HE3/52 requirements.
6.How does Aetrix verify that SMBJ75HE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ75HE3/52 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 SMBJ75HE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ75HE3/52?
All SMBJ75HE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ75HE3/52, 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 SMBJ75HE3/52 part is unused and in its original packaging.
Return procedure for SMBJ75HE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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