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Vishay General Semiconductor - Diodes Division SMBJ150A-M3/5B
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- Part No.:
- SMBJ150A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ150A-M3/5B.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,009
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Product details
Overview
SMBJ150A-M3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients up to 243 V at 2.5 A peak pulse current, with 600 W peak pulse power (10/1000 µs), 150 V standoff voltage, and 167–185 V breakdown voltage range. It protects MOSFETs, ICs, and sensor signal lines in industrial power supplies and telecom interfaces.
For engineers reviewing the SMBJ150A-M3/5B datasheet, SMBJ150A-M3/5B pinout, SMBJ150A-M3/5B application, or SMBJ150A-M3/5B equivalent, key selection criteria include clamping voltage (243 V), standoff voltage (150 V), unidirectional polarity, SMB package thermal resistance (RθJA = 100 °C/W), and AEC-Q101 qualification eligibility via HM3 suffix variants.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuit nodes, conducting only when reverse voltage exceeds its breakdown threshold (VBR = 167–185 V). Its low incremental surge resistance ensures minimal voltage overshoot during transient events, while fast response time (<1 ps) enables protection against ESD and inductive switching spikes.
The device uses a glass-passivated silicon junction and is rated for 150 °C maximum junction temperature. It meets MSL Level 1 per J-STD-020, with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102, and supports halogen-free, RoHS-compliant assembly via the M3 suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VWM) | 150 V - Maximum continuous reverse operating voltage before significant leakage begins. |
| Breakdown Voltage (VBR) | 167–185 V at 1.0 mA test current - Confirmed conduction onset range under controlled DC conditions. |
| Clamping Voltage (VC) | 243 V at 2.5 A peak pulse current (10/1000 µs) - Actual voltage seen by protected circuit during worst-case transient. |
| Peak Pulse Power (PPPM) | 600 W - Sustained transient energy absorption capability without failure under standard waveform. |
| Maximum Leakage (ID) | 1.0 µA at 150 V - Low off-state current minimizes standby power loss and signal interference. |
| Junction Temperature Range | –55 °C to +150 °C - Enables operation in harsh industrial and automotive under-hood environments. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity with cathode band marking on one end. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to system ground or low-side reference in clamping configuration | Provides return path during transient conduction; must be routed with low-inductance ground plane. |
| Cathode | Current exit point in forward bias; connected to protected line (e.g., power rail or signal trace) | Band-marked terminal; reverse-biased during normal operation; conducts when line voltage exceeds VWM. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 surge events up to 4 kV in industrial power inputs. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on downstream components compared to higher-ratio TVS devices. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets IPC-1752A material declaration requirements and supports lead-free reflow profiles up to 260 °C peak. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and eliminates bake requirements prior to reflow soldering. |
| 100 A non-repetitive surge rating (IFSM) | Supports single-event protection against high-energy 8.3 ms half-sine surges in AC/DC front-end stages. |
Applications
| Industrial Motor Drives | Telecom Power Interfaces |
|---|---|
|
Use Scenario: Protection of gate drivers and bus voltage sensing circuits against inductive kickback from IGBT/MOSFET switching. IC Role / Device Role / Timing Role: Unidirectional clamping device placed across DC bus or gate-source terminals to limit voltage excursions. Use Value: Limits transient overvoltage to ≤243 V, preventing gate oxide rupture and ensuring >100,000-cycle reliability under repetitive 600 W pulses. |
Use Scenario: Surge suppression on -48 V DC power feeds in base station remote radio units (RRUs). IC Role / Device Role / Timing Role: Primary overvoltage clamp on input power rail, coordinated with upstream MOVs and downstream POL converters. Use Value: Maintains 150 V standoff while clamping 10/1000 µs surges to 243 V, preserving -48 V rail integrity during lightning-induced transients. |
| Automotive Body Control Modules | Industrial Sensor Signal Conditioning |
|
Use Scenario: Input protection for LIN/CAN transceivers and microcontroller I/O pins exposed to load-dump and jump-start events. IC Role / Device Role / Timing Role: Secondary-level TVS on 12 V supply rails and communication lines, supplementing primary protection. Use Value: Withstands 150 °C junction temperature and delivers <1 µA leakage at 150 V, enabling stable operation in engine bay environments. |
Use Scenario: ESD and EFT protection on analog outputs (e.g., 4–20 mA loops) and digital sensor interfaces (I²C, SPI). IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) clamping element placed directly at connector entry points. Use Value: Clamps ±8 kV contact ESD per IEC 61000-4-2 without distorting 20 kHz bandwidth analog signals due to fast sub-nanosecond response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A-E3/5B | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3). | Preferred for commercial-grade assemblies where halogen content is unrestricted. | Select E3 for cost-sensitive, non-automotive applications requiring RoHS compliance only. |
| SMBJ150AHM3_B/I | AEC-Q101 qualified; identical clamping and thermal specs; HM3 denotes halogen-free + automotive grade. | Required for automotive body electronics, infotainment power rails, and ADAS subsystems. | Choose HM3 variant when automotive qualification and extended temperature validation are mandatory. |
Compared with SMBJ150A-M3/5B, the E3 version offers identical protection performance at lower material cost but lacks halogen-free certification, while the HM3 variant adds AEC-Q101 qualification for automotive use-neither is pin-compatible with different package types, but all share identical SMB (DO-214AA) footprint and polarity marking.
Availability
SMBJ150A-M3/5B is available at Aetrix Electronics and suitable for industrial motor drives, telecom power interfaces, and automotive body control modules requiring stable component supply, long-term lifecycle support, and halogen-free manufacturing compliance.
Supply support for SMBJ150A-M3/5B 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, power efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in space-constrained surface-mount applications, targeting industrial automation, telecom infrastructure, and automotive electronics where robustness and standardized packaging are critical.
FAQ
What is the clamping voltage of SMBJ150A-M3/5B at its rated peak pulse current?
The SMBJ150A-M3/5B has a maximum clamping voltage (VC) of 243 V when subjected to its rated peak pulse current of 2.5 A under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during transient events. The SMBJ150A-M3/5B maintains this clamping performance across its specified operating temperature range.
Is SMBJ150A-M3/5B suitable for automotive applications?
The SMBJ150A-M3/5B itself is not AEC-Q101 qualified; it is a commercial-grade, halogen-free, RoHS-compliant part. However, Vishay offers the functionally identical SMBJ150AHM3_B/I variant with full AEC-Q101 qualification. For automotive body control modules or infotainment systems requiring automotive-grade validation, SMBJ150AHM3_B/I-not SMBJ150A-M3/5B-is the appropriate selection.
What does the "M3" suffix indicate in SMBJ150A-M3/5B?
The "M3" suffix in SMBJ150A-M3/5B denotes halogen-free, RoHS-compliant construction meeting IPC-1752A material declaration standards. It also signifies compliance with JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 handling requirements. This distinguishes it from the "E3" suffix (RoHS-compliant but not halogen-free) and "HM3" (AEC-Q101 qualified + halogen-free).
How does SMBJ150A-M3/5B compare to SMAJ150A in terms of power handling?
The SMBJ150A-M3/5B provides 600 W peak pulse power, whereas the SMAJ150A (in smaller SMA/DO-214AC package) is rated for only 400 W. This 50 % higher power rating stems from the SMB package's larger copper pad area and lower thermal resistance (RθJA = 100 °C/W vs. ~130 °C/W for SMAJ), making SMBJ150A-M3/5B preferable for high-energy surge environments like industrial AC inputs.
What is the standoff voltage and why is it critical for SMBJ150A-M3/5B placement?
The standoff voltage (VWM) of SMBJ150A-M3/5B is 150 V - the maximum continuous reverse voltage it can block without significant leakage. This parameter dictates placement: the device must be installed where normal operating voltage remains below 150 V to avoid thermal runaway. Exceeding VWM causes excessive leakage current, leading to overheating and premature failure of the SMBJ150A-M3/5B.
SMBJ150A-M3/5B 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):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 243V
- Current - Peak Pulse (10/1000µs):
- 2.5A
- 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)
SMBJ150A-M3/5B FAQ
1.How can I place an order for SMBJ150A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ150A-M3/5B 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 SMBJ150A-M3/5B reliable?
The price and inventory of SMBJ150A-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ150A-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ150A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ150A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ150A-M3/5B?
SMBJ150A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ150A-M3/5B 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 SMBJ150A-M3/5B?
For technical support, including SMBJ150A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ150A-M3/5B requirements.
6.How does Aetrix verify that SMBJ150A-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ150A-M3/5B 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 SMBJ150A-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ150A-M3/5B?
All SMBJ150A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ150A-M3/5B, 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 SMBJ150A-M3/5B part is unused and in its original packaging.
Return procedure for SMBJ150A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ150A-M3/5B Tags
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