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Vishay General Semiconductor - Diodes Division SMBJ150A-E3/52
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- Part No.:
- SMBJ150A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ150A-E3/52.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:1,890
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Product details
Overview
SMBJ150A-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 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 a 10/1000 µs waveform - deployed in industrial motor drives to safeguard MOSFET gate drivers against inductive switching transients.
For engineers reviewing the SMBJ150A-E3/52 datasheet, SMBJ150A-E3/52 pinout, SMBJ150A-E3/52 application, or SMBJ150A-E3/52 equivalent, key selection criteria include clamping voltage margin relative to protected IC's absolute maximum rating, thermal derating above 25 °C ambient, unidirectional polarity alignment with DC rail topology, and SMB (DO-214AA) package compatibility with automated SMT placement and IPC Class 2 whisker-resistant soldering requirements.
Technical Context
This TVS operates as a silicon avalanche diode with glass-passivated junction, triggering conduction when reverse voltage exceeds its specified VBR range. Its low incremental surge resistance ensures minimal voltage overshoot during fast transients, while the 10/1000 µs waveform rating reflects standardized IEC 61000-4-5 surge immunity testing conditions.
The device exhibits a +0.108 %/°C temperature coefficient of VBR, enabling predictable breakdown shift across -55 °C to +150 °C operating junction range. With 100 °C/W junction-to-ambient thermal resistance and 5.0 W steady-state power dissipation capability, it relies on PCB copper pad area (0.2" × 0.2") for effective heat spreading under repetitive surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 150 V - Maximum continuous reverse voltage before significant leakage; sets upper limit for protected circuit DC bias. |
| VBR (Breakdown Voltage) | 167–185 V at 1 mA - Confirmed avalanche initiation range; defines minimum overvoltage threshold for clamping action. |
| VC (Clamping Voltage) | 243 V at IPPM = 2.5 A - Peak voltage seen by downstream circuit during 10/1000 µs surge; determines safe margin vs. IC absolute max rating. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capacity per transient event; validated per IEC 61000-4-5 waveform definition. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Ensures negligible standby current draw in high-impedance sensor or control circuits. |
| TJ max. | +150 °C - Maximum allowable junction temperature; supports operation in enclosed industrial enclosures without forced cooling. |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline with cathode band marking; compatible with J-STD-020 MSL Level 1 reflow profile. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, compliant with UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance. Cathode indicated by band marking on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or lowest potential point in protected circuit; completes conduction path during reverse-biased transient. |
| Cathode | High-side surge input node | Connected to line being protected (e.g., 150 V DC bus); carries full transient current into anode during clamping event. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-event suppression of high-energy surges common in industrial motor control and power supply outputs. |
| 243 V clamping voltage at 2.5 A | Provides ≥15 % margin below typical 270 V DC-link absolute maximum ratings for IGBT/MOSFET gate drivers. |
| Glass passivated chip junction | Ensures stable VBR and low leakage over 10+ year field life in humid or thermally cycled environments. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies SMT manufacturing flow. |
| RoHS-compliant, commercial grade (E3 suffix) | Meets EU RoHS Directive 2011/65/EU and JEDEC J-STD-020 reflow standards for lead-free assembly. |
Applications
| Industrial Motor Drives | DC Power Supply Outputs |
|---|---|
|
Use Scenario: Protection of IGBT gate driver ICs against voltage spikes induced by rapid turn-off of high-current motor windings. IC Role / Device Role / Timing Role: Unidirectional TVS placed between gate driver output and ground to clamp negative-going transients and prevent gate oxide rupture. Use Value: Limits transient voltage to 243 V, maintaining >20 V safety margin below gate driver's -20 V absolute minimum rating. |
Use Scenario: Safeguarding downstream DC-DC converter inputs connected to 150 V industrial power supplies subject to load dump events. IC Role / Device Role / Timing Role: Standoff-rated TVS installed across input terminals to shunt surge energy before it reaches primary-side controller ICs. Use Value: Absorbs up to 600 W of transient energy without degradation, preserving long-term reliability of isolated feedback optocouplers. |
| Telecom Line Cards | Automotive Body Control Modules |
|
Use Scenario: Shielding Ethernet PHY interface power pins from ESD and lightning-induced surges on outdoor telecom infrastructure. IC Role / Device Role / Timing Role: High-VWM TVS integrated into front-end protection network to prevent latch-up in 10/100BASE-TX transceivers. Use Value: Delivers sub-nanosecond response time and <1 µA leakage at 150 V, avoiding signal integrity impact on 100 MHz differential pairs. |
Use Scenario: Protecting LIN bus transceiver power rails in body control units exposed to battery disconnect transients. IC Role / Device Role / Timing Role: Unidirectional clamping device placed between VBAT and GND to suppress positive-going spikes up to 180 V. Use Value: Maintains 1.0 µA max reverse leakage at 150 V, preventing excessive quiescent current drain in always-on vehicle modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ150A | Same VWM (150 V), slightly higher VC (246 V), identical SMB package and 600 W rating. | Validated for UL 497B telecom surge compliance; less common in automotive-qualified BOMs. | Select when UL recognition is prioritized over AEC-Q101 qualification; verify layout clearance for Littelfuse's slightly longer body. |
| ON Semiconductor 1.5SMC150A | Identical electrical specs (VWM, VBR, VC, PPPM), same SMB footprint, but rated for 150 °C TJ max and MSL Level 1. | Widely used in industrial automation BOMs with documented long-term supply continuity. | Preferred for multi-source procurement strategies where second-source validation is required without layout change. |
Compared with SMBJ150A-E3/52, SMAJ150A offers stronger UL certification leverage but lacks AEC-Q101 qualification, while 1.5SMC150A provides identical performance with broader industrial supply chain adoption - both require no PCB revision but differ in qualification scope and regional compliance documentation.
Availability
SMBJ150A-E3/52 is available at Aetrix Electronics and suitable for industrial motor drives, telecom line cards, and DC power supply outputs requiring stable component supply, RoHS-compliant packaging, and repeatable surge immunity performance across production batches.
Supply support for SMBJ150A-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, and protection devices with emphasis on reliability, precision, and application-specific optimization.
The SMBJ series was engineered for high-energy transient suppression in harsh environments, targeting industrial, telecom, and transportation systems where consistent clamping behavior and long-term stability are critical.
FAQ
What is the maximum clamping voltage of SMBJ150A-E3/52 under standard test conditions?
The SMBJ150A-E3/52 has a maximum clamping voltage (VC) of 243 V when subjected to a 10/1000 µs waveform with a peak pulse current (IPPM) of 2.5 A. This value is measured at TA = 25 °C using the recommended 0.2" × 0.2" copper pad layout per Vishay Document 88392. The SMBJ150A-E3/52 maintains this clamping performance across its full operating temperature range, with minor derating above 25 °C ambient.
Does SMBJ150A-E3/52 meet automotive qualification standards?
No, SMBJ150A-E3/52 is a commercial-grade part with RoHS compliance (E3 suffix) but not AEC-Q101 qualified. For automotive applications, Vishay offers the SMBJ150AHE3 variant (HE3 suffix), which adds AEC-Q101 qualification and halogen-free construction. The SMBJ150A-E3/52 remains suitable for industrial and telecom use cases where AEC-Q101 is not mandated.
How does the temperature coefficient affect SMBJ150A-E3/52's breakdown voltage?
The SMBJ150A-E3/52 has a VBR temperature coefficient of +0.108 %/°C, meaning its breakdown voltage increases linearly with junction temperature. At 125 °C junction temperature, VBR rises approximately 10.8 % above its 25 °C value (167–185 V), reaching ~185–205 V. This positive drift ensures safer margin expansion under thermal stress, and the SMBJ150A-E3/52 remains within specification up to +150 °C TJ.
Can SMBJ150A-E3/52 be used in bidirectional protection circuits?
No, SMBJ150A-E3/52 is a unidirectional TVS diode, identifiable by its cathode band marking. Bidirectional operation requires the CA-suffixed variant (e.g., SMBJ150CA). Using SMBJ150A-E3/52 in AC or bipolar signal paths would result in forward conduction during negative half-cycles, causing failure. Always match polarity: SMBJ150A-E3/52 for DC rails with defined ground reference, SMBJ150CA for symmetrical surge protection.
What is the recommended PCB pad layout for optimal thermal performance of SMBJ150A-E3/52?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad area for each terminal of SMBJ150A-E3/52 to achieve rated 600 W pulse power and 5.0 W steady-state dissipation. These pads must be directly connected to internal ground/power planes via multiple thermal vias. Deviating from this layout reduces thermal resistance and risks exceeding the 150 °C maximum junction temperature during repetitive surges. The SMBJ150A-E3/52 datasheet Figure 2 provides exact dimensional guidance.
SMBJ150A-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:
- 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-E3/52 FAQ
1.How can I place an order for SMBJ150A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ150A-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 SMBJ150A-E3/52 reliable?
The price and inventory of SMBJ150A-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 SMBJ150A-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ150A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ150A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ150A-E3/52?
SMBJ150A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ150A-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 SMBJ150A-E3/52?
For technical support, including SMBJ150A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ150A-E3/52 requirements.
6.How does Aetrix verify that SMBJ150A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ150A-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 SMBJ150A-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ150A-E3/52?
All SMBJ150A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ150A-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 SMBJ150A-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ150A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ150A-E3/52 Tags
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