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Vishay General Semiconductor - Diodes Division SMBJ7.5D-M3/I
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- Part No.:
- SMBJ7.5D-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.5D-M3/I.pdf
- Description:
- TVS DIODE 7.5VWM 12.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,431
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Product details
Overview
SMBJ7.5D-M3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, with 7.5 V stand-off voltage (VWM), 8.46–9.08 V breakdown voltage (VBR) at 1.0 mA, 12.7 V clamping voltage (VC) at 47.2 A peak pulse current (IPPM), and 600 W peak pulse power rating (10/1000 μs waveform). It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in industrial and telecom power rails.
For engineers reviewing the SMBJ7.5D-M3/I datasheet, SMBJ7.5D-M3/I pinout, SMBJ7.5D-M3/I application, or SMBJ7.5D-M3/I equivalent, key selection criteria include unidirectional polarity, ±3.5 % VBR tolerance, low 0.5 μA reverse leakage at VWM, M3-grade halogen-free RoHS-compliant construction, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, entering avalanche conduction when transient voltage exceeds its VBR threshold. Its low incremental surge resistance ensures minimal voltage overshoot during fast transients, while the 10/1000 μs waveform rating reflects standardized surge immunity testing per ANSI/IEEE C62.35.
Thermal performance is defined by RθJA = 125 °C/W (on minimum recommended pad) and RθJM = 20 °C/W, supporting operation up to TJ = 150 °C. The device meets J-STD-020 MSL Level 1 and JESD 201 Class 2 whisker resistance, confirming suitability for high-reliability reflow assembly without moisture sensitivity concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 8.46 V / 9.08 V at IT = 1.0 mA - tight ±3.5 % tolerance ensures predictable turn-on across production lots |
| VC @ IPPM | 12.7 V at 47.2 A - clamping voltage limits downstream component stress during 600 W surge events |
| PPPM | 600 W (10/1000 μs) - industry-standard surge rating for transient immunity compliance |
| ID @ VWM | 0.5 μA - ultra-low leakage preserves signal integrity and minimizes standby power loss |
| TJ max | 150 °C - enables use in high-ambient environments such as industrial motor drives and outdoor telecom equipment |
| Package | SMB (DO-214AA) - 2-pin surface-mount outline with cathode band marking, compatible with JEDEC-standard pick-and-place |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, halogen-free and RoHS-compliant (M3 suffix), polarity indicated by cathode band on unidirectional types.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage rail; forms current path during reverse-biased clamping |
| Cathode (banded end) | High-side input terminal | Connected to protected line; avalanche conduction initiates here when V > VBR |
Key Features
| Feature | Design Value |
|---|---|
| ±3.5 % VBR tolerance | Enables precise overvoltage protection thresholds without design margin inflation |
| 600 W peak pulse power | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-earth) in properly designed circuits |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing without baking preconditioning |
| Low 0.5 μA ID at VWM | Minimizes parasitic loading on high-impedance sensor or communication lines |
| JESD 201 Class 2 whisker resistance | Ensures long-term solder joint reliability in thermal cycling environments |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of gate drivers and DC-link sensing circuits against flyback spikes from IGBT/MOSFET switching. IC Role / Device Role / Timing Role: Unidirectional TVS placed across power rail inputs to clamp inductive kickback transients within safe voltage margins. Use Value: Limits transient voltage to ≤12.7 V, preventing latch-up or oxide breakdown in 12 V-rated control ICs and isolated gate drivers. | Use Scenario: Input-stage surge suppression on -48 V DC telecom rectifier outputs feeding base station backplane logic. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing lightning-induced surges coupled onto distribution bus before reaching PMICs and FPGAs. Use Value: Withstands 600 W pulses without degradation, maintaining system uptime under repeated 10/1000 μs surge events per IEC 61000-4-5. |
| Automotive Body Control Modules | Consumer Sensor Interfaces |
Use Scenario: Protection of LIN bus transceivers and microcontroller I/O pins against load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional clamping device connected between LIN line and ground, referenced to vehicle chassis. Use Value: Fast response time and low VC ensure signal integrity is preserved during 12 V system transients up to ±100 V. | Use Scenario: ESD protection for analog output lines of temperature/humidity sensors in smart home hubs. IC Role / Device Role / Timing Role: Low-leakage TVS shunting HBM/CDM transients away from precision ADC front-ends and op-amps. Use Value: 0.5 μA reverse leakage avoids DC offset errors in μA-level sensor bias networks while clamping 8 kV contact ESD per IEC 61000-4-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5A-M3/I | Same VWM/VBR/VC specs but A-suffix denotes automotive-grade qualification (AEC-Q101) | Required for automotive ECUs; not necessary for industrial or consumer designs | Select SMBJ7.5A-M3/I only if AEC-Q101 compliance is mandated |
| P6SMB7.5A | Identical electrical specs but different branding; manufactured by ON Semiconductor, same SMB package and pinout | No functional difference; used where multi-source procurement is required | Valid second-source option with identical layout and test conditions |
Compared with SMBJ7.5D-M3/I, SMBJ7.5A-M3/I adds AEC-Q101 qualification for automotive use without altering clamping behavior, while P6SMB7.5A provides a functionally identical second-source alternative with matching SMB footprint and surge ratings-both require no PCB redesign.
Availability
SMBJ7.5D-M3/I is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, automotive body control modules, and consumer sensor interfaces requiring stable component supply and consistent surge immunity performance.
Supply support for SMBJ7.5D-M3/I 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 power MOSFETs for high-reliability applications.
The SMBJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for robust transient suppression in harsh environments including industrial automation, telecom infrastructure, and automotive subsystems.
FAQ
What is the breakdown voltage range for SMBJ7.5D-M3/I?
The SMBJ7.5D-M3/I has a guaranteed breakdown voltage (VBR) range of 8.46 V to 9.08 V at a test current of 1.0 mA, reflecting a tight ±3.5 % tolerance. This specification is measured per ANSI/IEEE C62.35 standards and ensures consistent clamping initiation across manufacturing lots. The SMBJ7.5D-M3/I maintains this VBR stability over its full operating temperature range of –55 °C to +150 °C.
Does SMBJ7.5D-M3/I support bidirectional transient suppression?
No, SMBJ7.5D-M3/I is a unidirectional TVS diode, indicated by the "D" suffix (as opposed to "CD" for bidirectional variants). It conducts only when the cathode is positive relative to the anode, making it suitable for DC rail protection with defined polarity. For AC or dual-polarity signal lines, a bidirectional variant like SMBJ7.5CD-M3/I must be selected instead.
What is the maximum clamping voltage of SMBJ7.5D-M3/I under surge conditions?
The SMBJ7.5D-M3/I exhibits a maximum clamping voltage (VC) of 12.7 V when subjected to its rated peak pulse current of 47.2 A (10/1000 μs waveform). This value is guaranteed per the datasheet and defines the upper voltage limit imposed on protected circuitry during transient events. The low VC ensures compatibility with 12 V logic and power stages without overstressing downstream components.
Is SMBJ7.5D-M3/I compliant with lead-free and RoHS requirements?
Yes, SMBJ7.5D-M3/I carries the "M3" suffix, which certifies halogen-free, RoHS-compliant construction and adherence to JESD 201 Class 2 whisker resistance standards. Its matte tin-plated terminals meet J-STD-002 and JESD 22-B102 solderability requirements, and the molding compound complies with UL 94 V-0 flammability rating-fully supporting modern lead-free reflow processes.
How does SMBJ7.5D-M3/I differ from SMBJ7.5A-M3/I?
SMBJ7.5D-M3/I is an industrial-grade TVS, while SMBJ7.5A-M3/I is the AEC-Q101-qualified automotive version. Both share identical electrical parameters (VWM, VBR, VC, PPPM), package, and pinout-but only SMBJ7.5A-M3/I undergoes extended stress testing for automotive temperature cycling, humidity, and lifetime reliability. The "A" suffix denotes qualification, not functional differentiation.
SMBJ7.5D-M3/I 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):
- 7.5V
- Voltage - Breakdown (Min):
- 8.46V
- Voltage - Clamping (Max) @ Ipp:
- 12.7V
- Current - Peak Pulse (10/1000µs):
- 47.2A
- 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)
SMBJ7.5D-M3/I FAQ
1.How can I place an order for SMBJ7.5D-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.5D-M3/I 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 SMBJ7.5D-M3/I reliable?
The price and inventory of SMBJ7.5D-M3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ7.5D-M3/I is usually 5 days.
3.What payment methods are accepted for SMBJ7.5D-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.5D-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.5D-M3/I?
SMBJ7.5D-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.5D-M3/I 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 SMBJ7.5D-M3/I?
For technical support, including SMBJ7.5D-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.5D-M3/I requirements.
6.How does Aetrix verify that SMBJ7.5D-M3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ7.5D-M3/I 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 SMBJ7.5D-M3/I meets industry standards.
7.What is the process for return or replacement of SMBJ7.5D-M3/I?
All SMBJ7.5D-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.5D-M3/I, 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 SMBJ7.5D-M3/I part is unused and in its original packaging.
Return procedure for SMBJ7.5D-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.5D-M3/I Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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