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Vishay General Semiconductor - Diodes Division SMBJ150A-M3/52
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- Part No.:
- SMBJ150A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ150A-M3/52.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,611
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Product details
Overview
SMBJ150A-M3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 150 V stand-off voltage (VWM), 167–185 V breakdown voltage (VBR) at 1 mA, 243 V maximum clamping voltage (VC) at 2.5 A peak pulse current (IPPM), and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and telecom infrastructure.
For engineers reviewing the SMBJ150A-M3/52 datasheet, SMBJ150A-M3/52 pinout, SMBJ150A-M3/52 application, or SMBJ150A-M3/52 equivalent, key selection criteria include unidirectional polarity, 150 V stand-off capability, 243 V clamping performance under 2.5 A surge, halogen-free RoHS-compliant construction (M3 suffix), and compatibility with automated SMT placement on PCBs with 5.0 mm × 5.0 mm copper pads per terminal.
Technical Context
This TVS diode operates as a voltage-clamping protection device in series with DC power rails or parallel to sensitive inputs. Its glass-passivated junction enables fast response (<1 ns), low incremental surge resistance, and stable clamping over temperature (0.108 %/°C VBR coefficient). The device is rated for repetitive 0.01 % duty cycle surges and meets J-STD-020 MSL Level 1 reflow profile (260 °C peak).
Designed for single-polarity transient suppression, SMBJ150A-M3/52 conducts only when reverse voltage exceeds VBR, limiting downstream voltage to ≤243 V during 10/1000 μs transients. It is not intended for bidirectional use - bidirectional variants require "CA" suffix (e.g., SMBJ150CA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 150 V - maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 167–185 V at 1 mA - guaranteed conduction onset range; ensures reliable triggering above normal operating voltage |
| VC (Clamping Voltage) | 243 V at IPPM = 2.5 A (10/1000 μs) - peak voltage seen by protected circuit during worst-case surge |
| PPPM (Peak Pulse Power) | 600 W - transient energy handling capacity under standardized 10/1000 μs waveform with 0.01 % duty cycle |
| ID (Reverse Leakage) | 1.0 μA max at VWM - minimal standby power loss and negligible loading on source circuits |
| TJ max. | 150 °C - maximum junction temperature; supports operation in high-ambient industrial environments |
| Package | SMB (DO-214AA) - surface-mount outline with 5.59 mm × 4.06 mm footprint, compatible with standard SMT pick-and-place |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; cathode indicated by band marking on one end; terminals solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side of protected line (e.g., GND or return path); defines unidirectional conduction direction |
| Cathode | Clamping output / Surge sink | Connected to higher-potential side (e.g., VCC or signal line); conducts surge current to ground when V > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 3/4 surges without derating in typical PCB layouts |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., inductive switch-off), improving clamping fidelity |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for industrial and telecom equipment without compromising thermal or electrical performance |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies manufacturing logistics |
| Glass passivated chip junction | Ensures long-term reliability and stable VBR over temperature and lifetime, critical for field-deployed systems |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
|
Use Scenario: Protection of gate drivers and bus voltage sensing circuits against switching transients from IGBT/MOSFET turn-off. IC Role / Device Role / Timing Role: Unidirectional clamping device placed across DC bus or gate resistor network to limit voltage spikes to safe levels. Use Value: Prevents destructive overvoltage on 150 V-rated control ICs and isolators, maintaining system uptime in variable-frequency drives. |
Use Scenario: Input-stage surge suppression on +48 V telecom rectifier outputs exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary TVS element shunting transient energy before it reaches DC/DC converters and PMICs. Use Value: Clamps 10/1000 μs surges to ≤243 V while sustaining 600 W peak power, meeting GR-1089-CORE Level 3 immunity requirements. |
| Automotive Body Control Modules | Industrial Sensor Signal Conditioning |
|
Use Scenario: Protection of LIN bus transceivers and microcontroller I/O pins against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Standoff-rated TVS on power rail and data lines, activated only during overvoltage events. Use Value: Withstands 150 V stand-off and clamps to 243 V, enabling direct integration into 12 V/24 V systems with AEC-Q101-compatible variants available. |
Use Scenario: Shielding analog front-end amplifiers and ADC inputs in factory-floor pressure/temperature sensors. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 μA) clamping element on sensor excitation lines and output traces. Use Value: Maintains signal integrity with <1 μA leakage at 150 V, preventing measurement drift while suppressing ESD and EFT bursts. |
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-E3/52 | Same electrical specs; RoHS-compliant but contains brominated flame retardants (non-halogen-free) | Acceptable where halogen-free requirement is not mandated (e.g., non-automotive commercial gear) | Select when cost sensitivity outweighs halogen-free compliance; identical footprint and assembly process |
| SMBJ150AHM3_B/I | AEC-Q101 qualified; same M3 halogen-free construction but supplied in 13" tape-and-reel (3200 pcs) | Required for automotive-grade production with traceability and qualification documentation | Choose for automotive BOMs needing full AEC-Q101 validation and extended reel packaging |
Compared with SMBJ150A-M3/52, the E3 variant trades halogen-free status for lower unit cost in non-regulated applications, while the HM3_B/I variant adds automotive qualification and larger reel quantity - neither is pin-compatible drop-in replacement without verifying qualification and packaging requirements.
Availability
SMBJ150A-M3/52 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, and sensor interface designs requiring stable component supply, halogen-free compliance, and repeatable SMT assembly performance.
Supply support for SMBJ150A-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, 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 harsh environments - targeting industrial automation, telecom infrastructure, and automotive subsystems where robustness and consistent clamping performance are critical.
FAQ
What is the clamping voltage of SMBJ150A-M3/52 under a 10/1000 μs surge?
The SMBJ150A-M3/52 has a maximum clamping voltage (VC) of 243 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 2.5 A. This value is measured per Figure 1 in Vishay document 88392 and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The SMBJ150A-M3/52 maintains this clamping performance across its specified operating temperature range.
Is SMBJ150A-M3/52 suitable for bidirectional transient protection?
No, SMBJ150A-M3/52 is a unidirectional TVS diode - it conducts only in reverse bias above its breakdown voltage and blocks forward current. For bidirectional protection, Vishay specifies the SMBJ150CA variant. Using SMBJ150A-M3/52 in bidirectional applications risks failure during positive-going transients, as it lacks symmetrical clamping capability. The SMBJ150A-M3/52 datasheet explicitly restricts its use to unidirectional configurations.
What does the "M3" suffix indicate in SMBJ150A-M3/52?
"M3" denotes halogen-free, RoHS-compliant construction per Vishay's material categorization standard. It confirms the molding compound contains no brominated or chlorinated flame retardants, satisfying strict environmental regulations for industrial and consumer electronics. This differs from the "E3" suffix (RoHS-compliant but not halogen-free) and "HM3" (halogen-free + AEC-Q101 qualified). The SMBJ150A-M3/52 retains identical electrical and thermal specs as other SMBJ150A variants.
What is the maximum reverse leakage current for SMBJ150A-M3/52 at its stand-off voltage?
The SMBJ150A-M3/52 exhibits a maximum reverse leakage current (ID) of 1.0 μA at its 150 V stand-off voltage (VWM), tested at TA = 25 °C. This ultra-low leakage ensures minimal power loss and avoids loading effects on high-impedance circuits such as sensor bias networks or precision voltage references. The SMBJ150A-M3/52 maintains this specification across its full operating temperature range per the manufacturer's electrical characteristics table.
Can SMBJ150A-M3/52 be used in automotive applications?
The SMBJ150A-M3/52 itself is not AEC-Q101 qualified; it is rated for commercial-grade operation (-55 °C to +150 °C). For automotive use, Vishay offers the SMBJ150AHM3_B/I variant, which carries full AEC-Q101 qualification and traceable lot documentation. While the SMBJ150A-M3/52 shares identical electrical parameters and package, its lack of automotive qualification means it cannot be deployed in safety-critical or production automotive ECUs without additional validation. Always specify HM3-suffixed parts for automotive BOMs.
SMBJ150A-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):
- 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-M3/52 FAQ
1.How can I place an order for SMBJ150A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ150A-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 SMBJ150A-M3/52 reliable?
The price and inventory of SMBJ150A-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 SMBJ150A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ150A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ150A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ150A-M3/52?
SMBJ150A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ150A-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 SMBJ150A-M3/52?
For technical support, including SMBJ150A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ150A-M3/52 requirements.
6.How does Aetrix verify that SMBJ150A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ150A-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 SMBJ150A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ150A-M3/52?
All SMBJ150A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ150A-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 SMBJ150A-M3/52 part is unused and in its original packaging.
Return procedure for SMBJ150A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ150A-M3/52 Tags
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