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Vishay General Semiconductor - Diodes Division SMBJ75A-M3/52
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- Part No.:
- SMBJ75A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ75A-M3/52.pdf
- Description:
- TVS DIODE 75VWM 121VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,837
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Product details
Overview
SMBJ75A-M3/52 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 DC power rails and signal lines. It features a 75 V stand-off voltage (VWM), 83.3–92.1 V breakdown voltage (VBR) at 1.0 mA, and clamps transients to ≤121 V at 5.0 A peak pulse current (IPPM), delivering 600 W peak pulse power with a 10/1000 µs waveform - ideal for safeguarding MOSFETs, microcontrollers, and sensor interfaces in industrial motor drives.
For engineers reviewing the SMBJ75A-M3/52 datasheet, SMBJ75A-M3/52 pinout, SMBJ75A-M3/52 application, or SMBJ75A-M3/52 equivalent, key selection criteria include its halogen-free RoHS-compliant M3 suffix, unidirectional polarity with cathode band marking, 150 °C maximum junction temperature, and compatibility with automated SMT placement on standard PCB pad layouts per JEDEC DO-214AA footprint.
Technical Context
This TVS diode operates as a clamping device: under normal conditions it presents high impedance (>1 µA leakage at 75 V), but triggers avalanche conduction when reverse voltage exceeds VBR, limiting transient energy by diverting surge current to ground. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance.
The SMBJ75A-M3/52 is rated for 600 W peak pulse power (10/1000 µs), supports 100 A non-repetitive forward surge current (8.3 ms half-sine), and exhibits a +0.106 %/°C temperature coefficient of VBR, enabling predictable performance across -55 °C to +150 °C operating range without thermal runaway.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 48 V or 60 V systems. |
| VBR (min/max) | 83.3 V / 92.1 V at 1.0 mA - Confirmed breakdown threshold range; ensures reliable triggering above system nominal voltage with margin. |
| VC @ IPPM | ≤121 V at 5.0 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on protected ICs. |
| PPPM | 600 W - Peak pulse power handling; enables suppression of high-energy transients from inductive switching or ESD events. |
| IFSM | 100 A - Single half-sine surge rating (8.3 ms); supports protection against short-duration line surges in AC/DC front-ends. |
| TJ max | +150 °C - Maximum junction temperature; allows operation in high-ambient environments such as automotive engine bays or industrial enclosures. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with IPC-7351B land patterns. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-side reference | Connected to ground or lower-potential node; forms return path during clamping. |
| Cathode | Reverse voltage sensing / high-side connection | Marked with band; connects to protected line (e.g., 48 V rail or sensor output); conducts avalanche current when VAK > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables suppression of high-energy transients from relay coil de-energization or lightning-induced surges in industrial control cabinets. |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes voltage overshoot during clamping, reducing risk of latch-up or gate oxide damage in downstream MOSFETs and logic ICs. |
| Halogen-free, RoHS-compliant M3 suffix | Meets environmental compliance requirements for export to EU, China, and Japan without compromising thermal or electrical performance. |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow assembly without moisture-related popcorning or delamination. |
| AEC-Q101 qualification available (HM3 variant) | Confirms reliability for automotive applications including body electronics and ADAS sensor power rails when specified with HM3 suffix. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate drivers and MCU I/O pins against back-EMF spikes from brushed DC motor commutation. IC Role / Device Role: Unidirectional clamping TVS placed between motor driver output and ground. Use Value: Limits transient voltage to ≤121 V, preventing gate oxide breakdown in 100 V-rated N-channel MOSFETs while surviving 100 A surge events. |
Use Scenario: Safeguarding LIN bus transceivers and power window control ICs from load dump and jump-start transients. IC Role / Device Role: Primary overvoltage clamp on 12 V supply rail upstream of LDO regulators. Use Value: Withstands 600 W pulses and maintains <1 µA leakage at 75 V, ensuring low quiescent current in always-on vehicle modules. |
| Telecom Power Supply Inputs | Industrial Sensor Signal Conditioning |
|
Use Scenario: Input-stage protection for 48 V telecom rectifiers exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role: First-line transient suppressor on DC input before bulk capacitance and DC/DC converters. Use Value: Clamps 10/1000 µs surges to 121 V while dissipating 600 W, preserving downstream converter FETs rated for 150 V breakdown. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in factory automation PLCs from ESD and cable discharge events. IC Role / Device Role: Low-capacitance (<100 pF) unidirectional TVS on 0–10 V or 4–20 mA output lines. Use Value: Adds <1 µA leakage at 75 V and negligible signal distortion, maintaining 16-bit ADC accuracy in precision measurement circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A-E3/52 | Same electrical specs; RoHS-compliant but contains brominated flame retardants (non-halogen-free). | Acceptable for commercial-grade equipment where halogen-free mandate does not apply. | Select E3/52 only if halogen content is unrestricted and cost sensitivity outweighs environmental compliance requirements. |
| SMBJ75AHM3/52 | Identical clamping and surge ratings; adds AEC-Q101 qualification and extended temperature validation (-40 °C to +125 °C ambient). | Required for automotive under-hood or chassis-mounted modules subject to OEM qualification protocols. | Choose HM3/52 when automotive PPAP submission, long-term reliability data, or extended temperature validation is mandatory. |
Compared with SMBJ75A-M3/52, the E3/52 variant offers identical protection performance but lacks halogen-free certification, while the HM3/52 adds automotive qualification and validated lifetime data - making M3/52 the optimal balance of environmental compliance and industrial-grade reliability without over-specifying for non-automotive use.
Availability
SMBJ75A-M3/52 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power inputs, automotive body electronics, and sensor interface protection requiring stable component supply and full traceability.
Supply support for SMBJ75A-M3/52 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series was engineered for high-power transient suppression in space-constrained SMT designs, targeting industrial automation, automotive subsystems, and communications infrastructure where robustness and repeatable clamping behavior are critical.
FAQ
What is the maximum clamping voltage of SMBJ75A-M3/52 under a 10/1000 µs surge?
The SMBJ75A-M3/52 clamps to a maximum of 121 V when subjected to its rated 5.0 A peak pulse current (IPPM) under a 10/1000 µs waveform. This value is guaranteed per Vishay's datasheet (Document Number: 88392, Rev. 09-Jan-2024) and defines the upper voltage limit imposed on protected circuitry during transient events. Designers must ensure downstream components tolerate this clamped level.
Does SMBJ75A-M3/52 meet automotive qualification standards?
The SMBJ75A-M3/52 itself is not AEC-Q101 qualified; it is a commercial-grade, halogen-free RoHS-compliant part. However, the functionally identical SMBJ75AHM3/52 variant carries full AEC-Q101 qualification. For automotive applications requiring OEM validation, SMBJ75AHM3/52 - not SMBJ75A-M3/52 - must be specified and sourced.
What is the meaning of the "M3" suffix in SMBJ75A-M3/52?
The "M3" suffix in SMBJ75A-M3/52 indicates halogen-free, RoHS-compliant construction meeting IEC 61249-2-21 requirements, with matte tin-plated leads and JESD 201 Class 2 whisker resistance. It distinguishes the part from the E3 (RoHS-compliant but non-halogen-free) and HM3 (AEC-Q101 qualified + halogen-free) variants, confirming environmental compliance without automotive qualification.
Can SMBJ75A-M3/52 be used in bidirectional protection circuits?
No - SMBJ75A-M3/52 is strictly unidirectional. Its cathode band marking and electrical specification (e.g., forward voltage drop, no symmetrical VBR) confirm single-polarity operation. For bidirectional protection, the SMBJ75CA-M3/52 variant must be used, which provides matched breakdown in both directions and no polarity marking.
What is the thermal resistance from junction to ambient for SMBJ75A-M3/52?
The SMBJ75A-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes no additional heatsinking and is critical for calculating steady-state temperature rise under continuous power dissipation (PD = 5.0 W).
SMBJ75A-M3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 75V
- Voltage - Breakdown (Min):
- 83.3V
- Voltage - Clamping (Max) @ Ipp:
- 121V
- Current - Peak Pulse (10/1000µs):
- 5A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ75A-M3/52 FAQ
1.How can I place an order for SMBJ75A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ75A-M3/52 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 SMBJ75A-M3/52 reliable?
The price and inventory of SMBJ75A-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ75A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ75A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ75A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ75A-M3/52?
SMBJ75A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ75A-M3/52 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 SMBJ75A-M3/52?
For technical support, including SMBJ75A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ75A-M3/52 requirements.
6.How does Aetrix verify that SMBJ75A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ75A-M3/52 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 SMBJ75A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ75A-M3/52?
All SMBJ75A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ75A-M3/52, 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 SMBJ75A-M3/52 part is unused and in its original packaging.
Return procedure for SMBJ75A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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