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Vishay General Semiconductor - Diodes Division SMBJ150AHM3_B/I
- Part No.:
- SMBJ150AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ150AHM3_B/I.pdf
- Description:
- 600W,150V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,877
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Product details
Overview
SMBJ150AHM3_B/I 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, 600 W peak pulse power (10/1000 µs), and clamps to ≤243 V at 2.5 A peak pulse current - deployed in industrial motor drives and automotive power supply rails.
For engineers reviewing the SMBJ150AHM3_B/I datasheet, SMBJ150AHM3_B/I pinout, SMBJ150AHM3_B/I application, or SMBJ150AHM3_B/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, 150 V operating margin, thermal resistance (RθJA = 100 °C/W), and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, entering avalanche conduction when reverse voltage exceeds VBR. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while the 10/1000 µs waveform rating reflects standardized surge immunity testing per ANSI/IEEE C62.35.
The SMBJ150AHM3_B/I is rated for -55 °C to +150 °C junction temperature, supports 100 A non-repetitive forward surge (IFSM), and exhibits 0.108 %/°C VBR temperature coefficient - enabling predictable clamping across wide thermal ranges in high-reliability embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 167 V / 185 V at 1 mA - guaranteed avalanche onset range defining minimum system overvoltage margin |
| VC @ IPPM | 243 V at 2.5 A - clamped voltage during 10/1000 µs transient, limiting stress on downstream ICs |
| PPPM | 600 W - peak surge energy absorption capability under standardized lightning/surge test waveform |
| ID @ VWM | ≤1.0 µA - ultra-low reverse leakage preserves efficiency in high-impedance bias networks |
| TJ max. | +150 °C - enables operation in under-hood automotive and industrial power converter environments |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with automated assembly and 5.0 mm × 5.0 mm copper pad thermal layout |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; defines current path during transient clamping |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., 12 V rail); avalanche conduction occurs from cathode to anode |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 4 surges without degradation in industrial power inputs |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain and body electronics requiring zero-failure reliability |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements |
| MSL Level 1 (260 °C reflow) | Supports single-pass lead-free soldering without moisture-induced popcorning |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., inductive switch-off) |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
|
Use Scenario: 12 V battery-fed ECU power input subjected to load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed upstream of DC/DC converter input. Use Value: Limits voltage to ≤243 V during 600 W surges, preventing damage to buck controller ICs and MOSFETs. |
Use Scenario: 24 V digital input module exposed to field-wiring induced switching transients. IC Role / Device Role / Timing Role: Standoff protection element parallel to optocoupler input stage. Use Value: Maintains <1.0 µA leakage at 24 V nominal, preserving input logic threshold integrity over temperature. |
| Telecom DC Power Feeds | Motor Drive Gate Driver Protection |
|
Use Scenario: -48 V telecom rectifier output feeding base station backplane with lightning-induced surges. IC Role / Device Role / Timing Role: Reverse-polarity protected clamping diode on primary DC bus. Use Value: Withstands 100 A single-half-sine surge (IFSM), ensuring survivability during AC-line coupled events. |
Use Scenario: Isolated gate driver supply rail in 3-phase inverter subject to Miller-induced dv/dt spikes. IC Role / Device Role / Timing Role: Fast-response clamp suppressing >150 V transients on 15 V gate bias rail. Use Value: 0.108 %/°C VBR coefficient ensures stable clamping across -40 °C to +125 °C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150AHE3_B/I | RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification | Suitable for commercial-grade industrial equipment without automotive certification needs | Select when halogen-free content and automotive qualification are not required |
| SMCJ150A-HM3 | Same VWM/VBR specs but SMC (DO-214AB) package - larger footprint, higher thermal mass (RθJA = 50 °C/W) | Better suited for higher average power dissipation scenarios where board space allows | Choose for enhanced thermal performance in high-duty-cycle surge environments |
Compared with SMBJ150AHM3_B/I, the HE3 variant trades halogen-free construction and AEC-Q101 validation for lower cost in non-automotive use, while the SMCJ150A-HM3 offers superior thermal handling at the expense of PCB area - making SMBJ150AHM3_B/I optimal for space-constrained, certified automotive modules.
Availability
SMBJ150AHM3_B/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, and telecom power supplies requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ150AHM3_B/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 designs and manufactures discrete semiconductors including diodes, MOSFETs, and TVS devices, with emphasis on reliability, precision, and application-specific performance.
The SMBJ series targets robust transient suppression in harsh environments - engineered for automotive, industrial, and telecom systems where voltage surges threaten system uptime and safety-critical operation.
FAQ
What is the clamping voltage of SMBJ150AHM3_B/I at its rated peak pulse current?
The SMBJ150AHM3_B/I clamps to a maximum of 243 V when subjected to its specified peak pulse current of 2.5 A under the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and ensures downstream components remain within safe voltage limits during surge events. The SMBJ150AHM3_B/I achieves this with low incremental surge resistance and stable avalanche characteristics.
Is SMBJ150AHM3_B/I qualified for automotive applications?
Yes, SMBJ150AHM3_B/I is AEC-Q101 qualified, as confirmed by the HM3 suffix in its ordering code - indicating full stress testing per automotive reliability standards including temperature cycling, humidity bias HAST, and mechanical shock. This makes SMBJ150AHM3_B/I suitable for under-hood and chassis-mounted modules where failure is not acceptable.
What does the "HM3" suffix indicate in SMBJ150AHM3_B/I?
The "HM3" suffix in SMBJ150AHM3_B/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from E3 (RoHS only) and HE3 (RoHS + AEC-Q101 but not halogen-free). The "B/I" indicates tape-and-reel packaging in 13-inch reels (3200 units), optimized for high-volume SMT placement.
How does SMBJ150AHM3_B/I differ from bidirectional TVS diodes like SMBJ150CA?
SMBJ150AHM3_B/I is unidirectional and features a cathode band marking, supporting DC-biased protection where polarity is fixed - unlike SMBJ150CA, which protects both polarities and has no polarity marking. The SMBJ150AHM3_B/I offers lower leakage (<1.0 µA) and higher IFSM (100 A), making it preferred for power rail clamping in automotive and industrial DC systems.
What is the thermal resistance of SMBJ150AHM3_B/I, and how does it affect layout?
SMBJ150AHM3_B/I 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 requires careful PCB layout: minimum recommended pad area must be maintained, and adjacent copper pours should avoid thermal isolation. For sustained surge duty, derating above TA = 25 °C per Figure 2 in the SMBJ150AHM3_B/I datasheet is essential.
SMBJ150AHM3_B/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):
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ150AHM3_B/I FAQ
1.How can I place an order for SMBJ150AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ150AHM3_B/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 SMBJ150AHM3_B/I reliable?
The price and inventory of SMBJ150AHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ150AHM3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ150AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ150AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ150AHM3_B/I?
SMBJ150AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ150AHM3_B/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 SMBJ150AHM3_B/I?
For technical support, including SMBJ150AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ150AHM3_B/I requirements.
6.How does Aetrix verify that SMBJ150AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ150AHM3_B/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 SMBJ150AHM3_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ150AHM3_B/I?
All SMBJ150AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ150AHM3_B/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 SMBJ150AHM3_B/I part is unused and in its original packaging.
Return procedure for SMBJ150AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ150AHM3_B/I Tags
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