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Vishay General Semiconductor - Diodes Division SMBJ9.0D-M3/I
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- Part No.:
- SMBJ9.0D-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0D-M3/I.pdf
- Description:
- TVS DIODE 9VWM 15.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,029
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Product details
Overview
SMBJ9.0D-M3/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. It features a 9.0 V stand-off voltage (VWM), 10.2–10.9 V breakdown voltage (VBR) at 1 mA, 15.1 V clamping voltage (VC) at 39.7 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 μs waveform).
For engineers reviewing the SMBJ9.0D-M3/I datasheet, SMBJ9.0D-M3/I pinout, SMBJ9.0D-M3/I application, or SMBJ9.0D-M3/I equivalent, key selection criteria include unidirectional polarity, ±3.5 % VBR tolerance, low leakage (<5.0 μA at VWM), M3 halogen-free RoHS-compliant industrial-grade 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 reverse voltage exceeds VBR to limit transient energy. Its low incremental surge resistance and fast response time ensure effective suppression of ESD and surge events per IEC 61000-4-2/4-5 standards.
The SMBJ9.0D-M3/I is rated for junction temperatures from –55 °C to +150 °C, with thermal resistance RθJA = 125 °C/W (on minimum pad layout) and RθJM = 20 °C/W, enabling reliable operation in industrial and automotive environments where ambient temperatures exceed 85 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 10.2 V / 10.9 V at 1.0 mA - tight ±3.5 % tolerance ensures predictable turn-on across production lots |
| VC @ IPPM | 15.1 V at 39.7 A - clamping voltage limits downstream IC stress during 600 W transient events |
| PPPM | 600 W (10/1000 μs) - peak surge power handling capability for repetitive surge protection |
| ID @ VWM | <5.0 μA - low leakage preserves signal integrity and minimizes standby power loss |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline compatible with JEDEC MS-012AC |
| Operating TJ | –55 °C to +150 °C - supports extended temperature range applications without derating below 125 °C |
Pinout & Package
Two-terminal unidirectional TVS diode in SMB (DO-214AA) package. Cathode indicated by band marking; anode is unmarked end. Matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 whisker resistance (Class 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward bias; connected to ground or lower-potential rail in unidirectional protection | Provides reference node for clamping; must be routed with low-inductance path to system ground plane |
| Cathode | Current exit terminal during reverse avalanche; connected to protected line (e.g., I/O, power rail) | Band-marked end; determines polarity orientation during PCB placement-critical for correct transient shunting direction |
Key Features
| Feature | Design Value |
|---|---|
| ±3.5 % VBR tolerance | Enables precise overvoltage threshold control without margin stacking in safety-critical designs |
| 600 W peak pulse rating (10/1000 μs) | Supports robust protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-earth) on 12 V systems |
| Low leakage <5.0 μA at VWM | Maintains high impedance during normal operation-no loading effect on sensor or communication lines |
| M3 suffix compliance | Halogens-free, RoHS-compliant, and passes JESD 201 Class 2 whisker test for long-term reliability in industrial deployments |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns or baking requirements |
Applications
| Industrial Motor Control | Automotive Body Electronics |
|---|---|
Use Scenario: Protection of gate drivers and microcontroller I/O pins against back-EMF spikes from brushed DC motor commutation. IC Role / Device Role / Timing Role: Unidirectional TVS placed between motor driver output and ground to clamp negative transients. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic interfaces while maintaining <5 μA standby leakage. | Use Scenario: Surge suppression on LIN bus lines and door module sensor inputs exposed to battery dump and load-dump events. IC Role / Device Role / Timing Role: Standoff-rated clamping device on 12 V supply rails feeding body control units. Use Value: Withstands 600 W pulses without degradation, ensuring functional safety compliance per ISO 7637-2 Pulse 1/2a/5a. |
| Consumer Power Adapters | Telecom Interface Protection |
Use Scenario: Input-stage transient protection for AC-DC adapters subjected to lightning-induced surges on primary-side rectifier outputs. IC Role / Device Role / Timing Role: Parallel-connected TVS across bulk capacitor to absorb line-to-ground transients. Use Value: 15.1 V clamping voltage prevents overvoltage stress on downstream PWM controllers rated for ≤20 V absolute max. | Use Scenario: Secondary-side protection of RS-485 transceiver data lines in base station remote units. IC Role / Device Role / Timing Role: Bidirectional-capable variant not used; SMBJ9.0D-M3/I applied on single-ended power rails feeding isolated interface ICs. Use Value: Low capacitance (typ. <100 pF) avoids signal integrity degradation on 10 Mbps differential buses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A-M3/I | Bidirectional version; symmetric VBR (10.2–10.9 V) applies in both polarities; same VWM (9.0 V) and VC (15.1 V) | Required for AC-coupled or floating signal lines where polarity reversal occurs (e.g., Ethernet PHY pairs) | Select SMBJ9.0A-M3/I only when bidirectional clamping is mandated; SMBJ9.0D-M3/I is optimal for DC rails with defined ground reference. |
| P6SMB9.0A | Same SMB package but older Vishay series; wider VBR tolerance (±5 %), higher ID (10 μA), and no M3 qualification | Lacks halogen-free and whisker-test compliance; unsuitable for new industrial designs requiring long-term reliability assurance | Use P6SMB9.0A only for legacy repair or cost-sensitive non-critical consumer applications; SMBJ9.0D-M3/I preferred for new designs. |
Compared with SMBJ9.0A-M3/I and P6SMB9.0A, the SMBJ9.0D-M3/I delivers tighter VBR tolerance, lower leakage, and full industrial-grade M3 qualification-making it the optimal choice for new designs demanding precision clamping and long-term supply continuity.
Availability
SMBJ9.0D-M3/I is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and consumer power adapter designs requiring stable component supply, long-lifecycle support, and RoHS-compliant manufacturing.
Supply support for SMBJ9.0D-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and performance in harsh environments.
The SMBJ series was developed specifically for high-reliability transient suppression in space-constrained surface-mount applications, targeting industrial automation, automotive subsystems, and telecom infrastructure where consistent clamping behavior and long-term stability are critical.
FAQ
What is the clamping voltage of SMBJ9.0D-M3/I and how is it measured?
The SMBJ9.0D-M3/I has a maximum clamping voltage (VC) of 15.1 V, measured at its peak pulse current (IPPM) of 39.7 A under a standardized 10/1000 μs double-exponential surge waveform. This value is guaranteed per datasheet testing conditions and defines the upper voltage limit imposed on protected circuitry during transient events. The SMBJ9.0D-M3/I maintains this clamping performance across its full operating temperature range.
Is SMBJ9.0D-M3/I suitable for protecting 12 V automotive power rails?
Yes, SMBJ9.0D-M3/I is commonly deployed on 12 V automotive power rails, such as those supplying body control modules or lighting drivers. Its 9.0 V stand-off voltage provides adequate margin above nominal 12 V system levels (accounting for ripple and regulation), while its 15.1 V clamping voltage stays well below the 16–20 V absolute maximum ratings of most automotive-grade ICs. The SMBJ9.0D-M3/I meets ISO 7637-2 Pulse 1 immunity requirements when properly laid out.
Does SMBJ9.0D-M3/I require a heatsink for continuous power dissipation?
No, SMBJ9.0D-M3/I is not intended for continuous power dissipation. Its 1.0 W rating at TA = 25 °C applies only to steady-state conditions-not surge events. During transient suppression, energy is absorbed briefly (microseconds), and heat dissipates into the PCB copper. For repeated surges, thermal design relies on PCB pad area (minimum 5.0 mm × 5.0 mm) rather than external heatsinks. The SMBJ9.0D-M3/I's RθJA = 125 °C/W reflects this board-level thermal path.
How does the M3 suffix affect SMBJ9.0D-M3/I's compliance and reliability?
The M3 suffix on SMBJ9.0D-M3/I certifies halogen-free construction, full RoHS compliance, and successful completion of JESD 201 Class 2 whisker testing-ensuring long-term interconnect reliability in high-vibration or high-humidity environments. Unlike standard variants, M3-qualified parts undergo additional material screening and process controls, making SMBJ9.0D-M3/I appropriate for industrial and automotive applications where field failure risk must be minimized.
Can SMBJ9.0D-M3/I be used in place of a bidirectional TVS like SMBJ9.0CD-M3/I?
No-SMBJ9.0D-M3/I is unidirectional and cannot replace a bidirectional part like SMBJ9.0CD-M3/I in AC-coupled or floating circuits. Attempting substitution risks failure during positive-going transients on the cathode side, since SMBJ9.0D-M3/I conducts only in reverse avalanche. For bidirectional protection, use SMBJ9.0CD-M3/I or SMBJ9.0A-M3/I; the SMBJ9.0D-M3/I is strictly for DC rails with fixed polarity relative to ground.
SMBJ9.0D-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):
- 9V
- Voltage - Breakdown (Min):
- 10.2V
- Voltage - Clamping (Max) @ Ipp:
- 15.1V
- Current - Peak Pulse (10/1000µs):
- 39.7A
- 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)
SMBJ9.0D-M3/I FAQ
1.How can I place an order for SMBJ9.0D-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0D-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 SMBJ9.0D-M3/I reliable?
The price and inventory of SMBJ9.0D-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 SMBJ9.0D-M3/I is usually 5 days.
3.What payment methods are accepted for SMBJ9.0D-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0D-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0D-M3/I?
SMBJ9.0D-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0D-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 SMBJ9.0D-M3/I?
For technical support, including SMBJ9.0D-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0D-M3/I requirements.
6.How does Aetrix verify that SMBJ9.0D-M3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0D-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 SMBJ9.0D-M3/I meets industry standards.
7.What is the process for return or replacement of SMBJ9.0D-M3/I?
All SMBJ9.0D-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0D-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 SMBJ9.0D-M3/I part is unused and in its original packaging.
Return procedure for SMBJ9.0D-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ9.0D-M3/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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