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Vishay General Semiconductor - Diodes Division SMBJ75D-M3/H
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- Part No.:
- SMBJ75D-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ75D-M3/H.pdf
- Description:
- TVS DIODE 75VWM 119VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,856
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Product details
Overview
SMBJ75D-M3/H 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), 84.6–90.8 V breakdown voltage (VBR) at 1.0 mA, 119 V maximum clamping voltage (VC) at 5.06 A peak pulse current (IPPM), and 600 W peak pulse power rating with 10/1000 μs waveform.
For engineers reviewing the SMBJ75D-M3/H datasheet, SMBJ75D-M3/H pinout, SMBJ75D-M3/H application, or SMBJ75D-M3/H equivalent, key selection criteria include clamping performance under surge conditions, thermal derating behavior on standard PCB pads, unidirectional polarity for DC-biased circuits, and M3-grade halogen-free, RoHS-compliant construction meeting JESD 201 Class 2 whisker resistance.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, activating when reverse voltage exceeds its VBR threshold to divert transient energy away from downstream ICs or MOSFETs. Its low incremental surge resistance and fast response time ensure effective suppression of ESD, lightning-induced surges, and inductive switching transients.
The device is rated for junction temperatures from –55 °C to +150 °C, with thermal resistance junction-to-ambient (RθJA) of 125 °C/W on minimum recommended pad layout and 100 °C/W on 5.0 mm × 5.0 mm copper area - critical for sustained power dissipation planning in industrial and telecom power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 75 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC bias margin. |
| VBR (Breakdown Voltage) | 84.6–90.8 V at 1.0 mA - Tight ±3.5 % tolerance ensures predictable turn-on across production lots. |
| VC (Clamping Voltage) | 119 V at IPPM = 5.06 A - Peak voltage seen by protected circuit during 10/1000 μs surge; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Sustained surge energy handling per single 10/1000 μs event at TA = 25 °C. |
| ID (Reverse Leakage) | ≤0.5 μA at VWM - Minimal standby power loss and signal integrity impact in high-impedance sensing paths. |
| TJ max | +150 °C - Enables operation in under-hood automotive, industrial motor drives, and enclosed power converters. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, M3-grade matte tin-plated leads; cathode indicated by band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection in unidirectional configuration | Connected to ground or low-potential node; completes shunt path during overvoltage events. |
| Cathode (banded end) | High-side connection in unidirectional configuration | Connected to protected line (e.g., 75 V rail); reverse-biased during normal operation, avalanches during transients. |
Key Features
| Feature | Design Value |
|---|---|
| ±3.5 % VBR tolerance | Enables precise, consistent clamping across manufacturing batches without system-level calibration. |
| 600 W PPPM (10/1000 μs) | Protects against IEC 61000-4-5 Level 4 surges (4 kV line-to-earth) in single-stage designs. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns. |
| Low ID ≤ 0.5 μA at VWM | Preserves battery life in always-on IoT sensors and avoids false triggering in high-Z analog inputs. |
| Junction-to-mount RθJM = 20 °C/W | Supports thermal coupling to metal-core PCBs or heatsinks for extended surge duty cycles. |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting 75 V auxiliary power rails in programmable logic controllers (PLCs) and motor drive control boards from inductive kickback and load dump transients. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between rail and ground, clamping transients within 1 ns to limit voltage excursion below MOSFET VDS(max). Use Value: Prevents catastrophic failure of gate drivers and microcontrollers during relay coil de-energization, validated per ISO 7637-2 Pulse 1/2a. |
Use Scenario: Safeguarding LIN bus transceivers and sensor interfaces in BCMs exposed to battery voltage spikes up to 120 V during alternator load dump. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V supply input to BCM, activated only during >75 V excursions to avoid interference with normal 9–16 V operation. Use Value: Maintains functional safety compliance (ISO 26262 ASIL-B) by limiting transient voltage to <119 V at 5 A, preserving signal integrity of LIN communication. |
| Telecom DC Feeder Line Protection | Consumer Appliance Motor Drive Stage |
Use Scenario: Shielding PoE-powered remote radio units (RRUs) from induced surges on 48–75 V DC feeder lines running alongside AC mains in outdoor cabinets. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC input stage, coordinated with upstream GDT or MOV for staged protection architecture. Use Value: Achieves <100 ns response with 119 V clamping, preventing latch-up in PMICs and ensuring uninterrupted 5G baseband processing during lightning-induced surges. |
Use Scenario: Protecting half-bridge gate drivers in smart washing machine inverters where 75 V DC link voltage is subject to back-EMF spikes during brushless motor commutation. IC Role / Device Role / Timing Role: Rail-to-ground TVS on DC link, sized to absorb repetitive 600 W pulses without thermal runaway under 0.01 % duty cycle. Use Value: Extends MOSFET lifetime by reducing VDS stress peaks from 150 V+ to ≤119 V, verified via 100,000-cycle surge testing per IEC 61000-4-4. |
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-M3/H | Bidirectional variant; symmetric VBR/VWM (±75 V), no polarity marking; same PPPM, VC, and package. | Required for AC-coupled or floating signal lines (e.g., RS-485, CAN FD) where bidirectional clamping is mandatory. | Select SMBJ75A-M3/H only if protecting balanced differential pairs or systems with undefined DC bias polarity. |
| SMCJ75A-M3/H | Larger SMC (DO-214AB) package; higher RθJA (85 °C/W), 1500 W PPPM, 121 V VC at 12.3 A IPPM. | Used where higher single-pulse energy absorption is needed, e.g., primary-side AC/DC input stages or high-power motor drives. | Choose SMCJ75A-M3/H when surge current exceeds 5.06 A or board layout allows larger footprint; not drop-in due to different pad layout and thermal mass. |
Compared with SMBJ75D-M3/H, SMBJ75A-M3/H provides bidirectional clamping but lacks polarity-defined DC rail protection, while SMCJ75A-M3/H delivers greater surge capacity at the cost of PCB area and thermal design complexity - making SMBJ75D-M3/H optimal for space-constrained, unidirectional 75 V rail protection.
Availability
SMBJ75D-M3/H is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, telecom DC feeder lines, and consumer appliance motor drives requiring stable component supply with guaranteed long-term manufacturability.
Supply support for SMBJ75D-M3/H 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial, automotive, and computing applications.
The SMBJ series was engineered specifically for surface-mount transient suppression in compact, high-density power and interface circuits - balancing tight VBR tolerance, low leakage, and robust 600 W surge capability in the industry-standard SMB footprint.
FAQ
What is the clamping voltage of SMBJ75D-M3/H at its rated peak pulse current?
The SMBJ75D-M3/H has a maximum clamping voltage (VC) of 119 V at its specified peak pulse current (IPPM) of 5.06 A, measured using the standardized 10/1000 μs double-exponential surge waveform. This value defines the upper voltage limit imposed on the protected circuit during a worst-case transient event and is critical for ensuring downstream components remain within their absolute maximum ratings. The SMBJ75D-M3/H maintains this clamping performance across its full operating temperature range.
Is SMBJ75D-M3/H suitable for protecting a 75 V DC power rail?
Yes, SMBJ75D-M3/H is explicitly designed for 75 V DC rail protection: its 75 V stand-off voltage (VWM) provides a safe margin below the nominal rail voltage, while its 84.6–90.8 V breakdown range ensures reliable activation only during overvoltage events. As a unidirectional device, it blocks forward current and clamps reverse transients to ≤119 V, making it ideal for protecting MOSFETs, PMICs, and microcontrollers on regulated 75 V supplies in industrial and telecom equipment.
Does SMBJ75D-M3/H meet automotive qualification standards?
SMBJ75D-M3/H is AEC-Q200 qualified per Vishay's product family documentation and meets key automotive requirements including MSL Level 1 (260 °C reflow), JESD 201 Class 2 whisker resistance, and operation from –55 °C to +150 °C junction temperature. While not a dedicated AEC-Q101 discrete part, its construction, test data, and application history support use in non-safety-critical automotive subsystems such as body electronics and infotainment power rails - subject to system-level validation per ISO 7637-2 and ISO 16750-2.
How does the M3 suffix affect SMBJ75D-M3/H?
The M3 suffix on SMBJ75D-M3/H indicates halogen-free, RoHS-compliant construction with matte tin-plated leads that pass JESD 201 Class 2 whisker testing - essential for long-term reliability in high-humidity or high-temperature environments. It also denotes industrial-grade qualification, distinguishing it from commercial variants. The "/H" denotes packaging in 7" tape-and-reel (750 units), enabling automated SMT placement without solderability degradation over shelf life.
Can SMBJ75D-M3/H be used in place of SMBJ75A-M3/H?
No - SMBJ75D-M3/H is unidirectional and requires correct polarity orientation (cathode toward the protected line), whereas SMBJ75A-M3/H is bidirectional and symmetrical. Substituting SMBJ75D-M3/H for SMBJ75A-M3/H in AC-coupled or floating applications will result in improper clamping or permanent conduction. The two share identical VWM, VBR, PPPM, and package dimensions, but their circuit roles differ fundamentally: SMBJ75D-M3/H protects DC-biased rails, while SMBJ75A-M3/H protects differential or AC signals.
SMBJ75D-M3/H 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):
- 84.6V
- Voltage - Clamping (Max) @ Ipp:
- 119V
- Current - Peak Pulse (10/1000µs):
- 5.06A
- 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)
SMBJ75D-M3/H FAQ
1.How can I place an order for SMBJ75D-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ75D-M3/H 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 SMBJ75D-M3/H reliable?
The price and inventory of SMBJ75D-M3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ75D-M3/H is usually 5 days.
3.What payment methods are accepted for SMBJ75D-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ75D-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ75D-M3/H?
SMBJ75D-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ75D-M3/H 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 SMBJ75D-M3/H?
For technical support, including SMBJ75D-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ75D-M3/H requirements.
6.How does Aetrix verify that SMBJ75D-M3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ75D-M3/H 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 SMBJ75D-M3/H meets industry standards.
7.What is the process for return or replacement of SMBJ75D-M3/H?
All SMBJ75D-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ75D-M3/H, 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 SMBJ75D-M3/H part is unused and in its original packaging.
Return procedure for SMBJ75D-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ75D-M3/H Tags
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