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Vishay General Semiconductor - Diodes Division SMBJ150-E3/52
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- Part No.:
- SMBJ150-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ150-E3/52.pdf
- Description:
- TVS DIODE 150VWM 268VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,462
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Product details
Overview
SMBJ150-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power rails and signal lines. It features a 150 V standoff voltage (VWM), 167–185 V breakdown range (VBR at 1 mA), 243 V maximum clamping voltage (VC) at 2.5 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in industrial motor drives, telecom power supplies, and automotive body control modules.
For engineers reviewing the SMBJ150-E3/52 datasheet, SMBJ150-E3/52 pinout, SMBJ150-E3/52 application, or SMBJ150-E3/52 equivalent, key selection criteria include clamping performance under 2.5 A surge, thermal resistance (RθJA = 100 °C/W), unidirectional polarity marking, RoHS-compliant matte tin plating, and SMB (DO-214AA) package compatibility with automated SMT placement.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM = 150 V, it avalanches into low-impedance conduction to divert transients away from downstream ICs or MOSFETs. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM).
Designed for single-polarity DC systems, SMBJ150-E3/52 responds in <1 ps to fast transients and sustains repetitive surges at 0.01% duty cycle. It meets J-STD-020 MSL Level 1 (260 °C reflow peak) and supports operation from –55 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 150 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin. |
| VBR (Breakdown Voltage) | 167–185 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering above nominal system voltage. |
| VC (Clamping Voltage) | 243 V at IPPM = 2.5 A - Peak voltage seen by protected circuit during 10/1000 µs surge; limits stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy-handling capacity per transient event; validated with standard 10/1000 µs waveform. |
| IFSM (Surge Current) | 100 A - Single half-sine (8.3 ms) forward surge rating; relevant for fault-current limiting in unidirectional configurations. |
| RθJA (Thermal Resistance) | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs derating above 25 °C ambient. |
| Package | SMB (DO-214AA) - Surface-mount outline with cathode band marking; footprint compatible with automated pick-and-place. |
Pinout & Package
Package: SMB (DO-214AA), 2-terminal surface-mount device with molded epoxy case, matte tin-plated leads, and cathode band marking on the anode side. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); compliant with UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | High-side connection point for reverse-biased operation | Connected to protected line (e.g., +150 V rail); conducts when transient exceeds VWM. |
| Anode | Low-side reference terminal | Tied to ground or common return path; completes shunt path during clamping event. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 150 V DC systems without external series impedance. |
| 243 V clamping at 2.5 A | Provides ≥10% voltage margin below typical 275 V AC-derived DC bus ratings, preventing latch-up in downstream regulators. |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage (<1 µA) across temperature and lifetime, critical for high-reliability industrial use. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without preconditioning, reducing manufacturing complexity and cost. |
| RoHS-compliant, halogen-free option available | E3 suffix confirms compliance with EU RoHS Directive 2011/65/EU and material restrictions for global market access. |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of gate drivers and DC-link sensing circuits against switching-induced transients in 3-phase inverters. IC Role / Device Role / Timing Role: Shunt TVS placed across +150 V DC bus to clamp inductive kickback from IGBT/MOSFET turn-off. Use Value: Limits voltage overshoot to ≤243 V during 2.5 A surge, preserving gate oxide integrity and enabling use of 250 V-rated SiC drivers. |
Use Scenario: Input-stage surge suppression on 48 V telecom rectifier outputs exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side distribution rail feeding PoE controllers and PMICs. Use Value: Clamps 10/1000 µs transients to 243 V within nanoseconds, preventing latch-up in 3.3 V/5 V LDOs downstream of DC-DC converters. |
| Automotive Body Control Modules | Consumer Appliance Power Boards |
Use Scenario: Protection of LIN bus transceivers and microcontroller I/O pins against load-dump and jump-start events. IC Role / Device Role / Timing Role: Unidirectional TVS on 12 V supply rail upstream of local regulators powering MCU peripherals. Use Value: Withstands 100 A surge (8.3 ms) and clamps to 243 V, meeting ISO 7637-2 Pulse 5a requirements for 150 V clamping threshold. |
Use Scenario: Overvoltage guard on main SMPS output in washing machine control boards subject to relay contact bounce. IC Role / Device Role / Timing Role: Standoff-rated TVS on 150 V DC bus feeding motor driver ICs and communication interfaces. Use Value: Maintains <1 µA leakage at 150 V, avoiding standby power penalty while delivering 600 W transient immunity per event. |
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-M3/52 | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package. | No functional difference; selected where halogen-free materials are mandated (e.g., EU WEEE, specific OEM specs). | Choose M3/52 when halogen-free compliance is required; E3/52 remains optimal for general commercial use. |
| SMCJ150A-E3/52 | Same VWM/VC but in larger SMC (DO-214AB) package; rated for 1500 W PPPM, RθJA = 50 °C/W. | Higher power handling and lower thermal resistance, but requires larger PCB area and different pad layout. | Select SMCJ150A-E3/52 only when >600 W surge capability is needed and board space permits SMC footprint. |
Compared with SMBJ150-E3/52, the M3/52 alternative offers identical protection performance with halogen-free construction, while the SMCJ150A-E3/52 provides higher surge capacity at the cost of larger size and thermal design overhead - making SMBJ150-E3/52 the optimal balance of compactness, manufacturability, and 600 W capability for space-constrained 150 V systems.
Availability
SMBJ150-E3/52 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, and automotive body control modules requiring stable component supply, RoHS compliance, and automated SMT assembly support.
Supply support for SMBJ150-E3/52 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, TVS devices, and optoelectronics with emphasis on reliability, precision, and application-specific optimization.
The SMBJ series was engineered for high-energy transient suppression in compact SMT form factors, targeting industrial, automotive, and communications systems where board space, surge robustness, and reflow compatibility are critical.
FAQ
What is the maximum clamping voltage of SMBJ150-E3/52 under standard test conditions?
The SMBJ150-E3/52 has a maximum clamping voltage (VC) of 243 V when subjected to a 10/1000 µs waveform at a peak pulse current (IPPM) of 2.5 A. This value is measured per JEDEC standards and reflects the upper limit of voltage imposed on the protected circuit during a defined transient event - a critical parameter for ensuring downstream components remain within their absolute maximum ratings. The SMBJ150-E3/52 maintains this clamping performance across its full operating temperature range.
Is SMBJ150-E3/52 suitable for automotive applications?
SMBJ150-E3/52 is rated for operation from –55 °C to +150 °C and meets MSL Level 1 reflow requirements, but it is not AEC-Q101 qualified. For automotive-grade use, Vishay offers the SMBJ150AHE3_B/H variant (with HE3 suffix), which carries AEC-Q101 qualification. The SMBJ150-E3/52 remains appropriate for non-safety-critical automotive subsystems where qualification is not mandated - such as infotainment power rails or lighting control - provided system-level validation confirms robustness. Always verify against OEM-specific stress test requirements before deployment.
How does the SMBJ150-E3/52 differ from bidirectional TVS diodes like SMBJ150CA?
The SMBJ150-E3/52 is unidirectional and features a cathode band marking; it conducts only during reverse overvoltage events and blocks forward current beyond ~3.5 V. In contrast, SMBJ150CA is bidirectional with no polarity marking and clamps symmetrically in both directions - suitable for AC lines or differential signal protection. The SMBJ150-E3/52 offers lower leakage (<1.0 µA at 150 V) and higher surge current rating (100 A IFSM) than its bidirectional counterpart, making it preferred for DC power rail protection where polarity is fixed and forward conduction must be avoided.
What is the thermal resistance of SMBJ150-E3/52, and how does it affect layout?
The SMBJ150-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimal copper area and no internal plane connections. To maintain safe junction temperatures under repetitive surges, designers should increase pad size, add thermal vias to inner ground planes, or reduce ambient temperature. Derating curves in the Vishay datasheet (Fig. 2) show that at 75 °C ambient, the device's peak pulse power must be reduced to ~420 W - a key consideration for high-temperature environments like enclosed motor drives.
Can SMBJ150-E3/52 be used in parallel for higher surge current handling?
Parallel connection of SMBJ150-E3/52 devices is not recommended due to mismatch in breakdown voltage (VBR tolerance: 167–185 V) and dynamic impedance, leading to uneven current sharing and potential thermal runaway. For higher surge capability, Vishay specifies the SMCJ150A-E3/52 (1500 W, same VWM/VC) or SMAJ150A-E3/52 (400 W, smaller footprint) as functionally aligned alternatives. If parallel use is unavoidable, individual current-limiting resistors or matched-bin devices would be required - but this adds cost and board area without guaranteed improvement over a single correctly sized TVS like SMBJ150-E3/52.
SMBJ150-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 268V
- Current - Peak Pulse (10/1000µs):
- 2.2A
- 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)
SMBJ150-E3/52 FAQ
1.How can I place an order for SMBJ150-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ150-E3/52 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 SMBJ150-E3/52 reliable?
The price and inventory of SMBJ150-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ150-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ150-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ150-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ150-E3/52?
SMBJ150-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ150-E3/52 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 SMBJ150-E3/52?
For technical support, including SMBJ150-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ150-E3/52 requirements.
6.How does Aetrix verify that SMBJ150-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ150-E3/52 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 SMBJ150-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ150-E3/52?
All SMBJ150-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ150-E3/52, 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 SMBJ150-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ150-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ150-E3/52 Tags
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