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Vishay General Semiconductor - Diodes Division SMBJ150AHM3/I
- Part No.:
- SMBJ150AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ150AHM3/I.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,527
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Product details
Overview
SMBJ150AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 150 V standoff voltage (VWM), 167–185 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), clamping voltage of 243 V at 2.5 A, and operates across –55 °C to +150 °C junction temperature range - deployed in industrial motor drives, telecom power supplies, and automotive ECUs.
For engineers reviewing the SMBJ150AHM3/I datasheet, SMBJ150AHM3/I pinout, SMBJ150AHM3/I application, or SMBJ150AHM3/I equivalent, key selection criteria include its unidirectional polarity, SMB (DO-214AA) package compatibility with automated SMT assembly, AEC-Q101 qualification status (HM3 suffix), and verified clamping performance under repetitive surge conditions per IEC 61000-4-5.
Technical Context
This TVS diode employs a glass-passivated silicon junction optimized for fast response (<1 ps) to transient events such as ESD, lightning-induced surges, and inductive switching spikes. Its low incremental surge resistance (Rdyn) ensures stable clamping during high-current transients up to 2.5 A IPPM, while maintaining tight VBR tolerance (±5%) and low leakage (<1 µA at VWM).
The device is rated for 600 W peak pulse power with a 10/1000 µs waveform at 0.01% duty cycle and derates linearly above 25 °C ambient per Fig. 2 in the datasheet. Thermal resistance is 100 °C/W (junction-to-ambient, on recommended 5.0 mm × 5.0 mm copper pads) and 20 °C/W (junction-to-lead), enabling reliable operation without external heatsinking in most board-level applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 150 V - maximum continuous reverse operating voltage before significant conduction begins; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 167–185 V at 1 mA - precise voltage at which avalanche conduction initiates; ensures predictable turn-on during overvoltage events |
| VC (Clamping Voltage) | 243 V at 2.5 A IPPM - maximum voltage seen by protected circuit during specified 10/1000 µs surge; determines downstream component stress |
| PPPM (Peak Pulse Power) | 600 W - energy-handling capability under standardized 10/1000 µs waveform; validates suitability for IEC 61000-4-5 Level 4 compliance |
| IPPM (Peak Pulse Current) | 2.5 A - maximum non-repetitive surge current the device sustains without degradation; directly tied to PCB trace and layout design |
| TJ max. | +150 °C - maximum junction temperature rating; supports operation in under-hood automotive and industrial environments |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with J-STD-020 MSL Level 1 reflow |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, RoHS-compliant and halogen-free (HM3 suffix), MSL Level 1, 260 °C peak reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | High-side connection in unidirectional configuration | Connected to protected line (e.g., VIN); conducts when line voltage exceeds VBR relative to anode ground reference |
| Anode | Low-side reference terminal | Typically tied to system ground or common return path; establishes reference for clamping action and defines unidirectional polarity |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - enables use in engine control modules and ADAS power rails |
| 600 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 surge immunity testing up to Level 4 (4 kV line-to-earth) without derating in standard PCB layouts |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes voltage overshoot during transients - critical for protecting 150 V-rated MOSFETs and gate drivers in DC-DC converters |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free reflow assembly without moisture sensitivity concerns or baking requirements |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure - improves field lifetime in industrial enclosures |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
|
Use Scenario: Protection of IGBT gate driver inputs against voltage spikes induced by transformer leakage inductance during PWM switching. IC Role / Device Role / Timing Role: Unidirectional TVS placed between gate and source, clamping transient excursions above 150 V to prevent gate oxide rupture. Use Value: Limits gate-source voltage to ≤243 V during 2.5 A surge events, preserving IGBT reliability without adding propagation delay or loading. |
Use Scenario: Input-stage surge suppression on 48 V DC distribution bus feeding PoE injectors and base station RF amplifiers. IC Role / Device Role / Timing Role: Primary overvoltage clamp on bulk input rail, absorbing lightning-induced surges per IEC 61000-4-5. Use Value: Maintains <1 µA leakage at 150 V standby, minimizing no-load power loss while delivering 600 W transient handling with <1 ps response. |
| Automotive Body Control Modules | Consumer Appliance Power Inputs |
|
Use Scenario: Load-dump protection on 12 V battery-fed microcontroller supply rails in BCMs exposed to ISO 7637-2 Pulse 5a (110 V/100 ms). IC Role / Device Role / Timing Role: Standoff-rated TVS placed upstream of LDO regulators, conducting only during overvoltage events. Use Value: Withstands 150 V continuous operation and clamps load dump peaks to 243 V, preventing regulator shutdown and MCU brownout. |
Use Scenario: Surge protection on AC-DC adapter input stage in smart home hubs subjected to mains-borne transients. IC Role / Device Role / Timing Role: Secondary-level TVS after MOV, providing precise clamping where MOV let-through voltage exceeds IC ratings. Use Value: Delivers tighter VBR tolerance (±5%) and lower clamping than MOVs - essential for safeguarding 150 V-rated bridge rectifiers and primary-side controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150AHE3/I | Same electrical specs but RoHS-compliant commercial grade (E3), not AEC-Q101 qualified; higher ID leakage (≤1 µA vs. ≤0.5 µA typical for HM3) | Lacks automotive qualification; suitable for industrial/commercial designs where AEC-Q101 is not mandated | Select SMBJ150AHE3/I for cost-sensitive non-automotive applications requiring identical clamping and footprint |
| SMAJ150A-M3/5B | Lower PPPM (400 W), larger SMA package (DO-214AC), 100 °C TJ max., same VWM/VBR range | Reduced surge margin and thermal capability; requires larger PCB area and limits high-temp deployment | Choose SMAJ150A-M3/5B only if legacy SMA footprint must be retained and 400 W surge rating suffices |
Compared with SMBJ150AHM3/I, SMBJ150AHE3/I offers identical protection performance without automotive qualification, while SMAJ150A-M3/5B trades 33% lower surge power and reduced thermal robustness for backward-compatible packaging - making SMBJ150AHM3/I the optimal choice for new AEC-Q101-compliant or high-reliability industrial designs.
Availability
SMBJ150AHM3/I is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, automotive body control modules, and consumer appliance power inputs requiring stable component supply, AEC-Q101 validation, and consistent 600 W surge handling.
Supply support for SMBJ150AHM3/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 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 developed to deliver high-power, low-profile transient suppression for automotive, industrial, and telecom systems where space-constrained SMT layouts demand AEC-Q101 compliance and repeatable clamping behavior.
FAQ
What is the clamping voltage of SMBJ150AHM3/I at its rated peak pulse current?
The SMBJ150AHM3/I has a maximum clamping voltage (VC) of 243 V at 2.5 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay Document 88392 and defines the upper voltage limit imposed on protected circuits during surge events. The SMBJ150AHM3/I maintains this clamping performance across its full operating temperature range and is validated for repetitive surge duty cycles up to 0.01%.
Is SMBJ150AHM3/I suitable for automotive applications?
Yes, SMBJ150AHM3/I is AEC-Q101 qualified, as confirmed by the "HM3" suffix denoting halogen-free, RoHS-compliant, and automotive-grade construction. It meets stress tests including temperature cycling, high-temperature reverse bias (HTRB), and surge endurance required for under-hood and chassis-mounted electronics. The SMBJ150AHM3/I is explicitly listed in Vishay's AEC-Q101 qualified product table and supports applications such as body control modules and powertrain sensors.
What does the "HM3" suffix indicate in SMBJ150AHM3/I?
The "HM3" suffix in SMBJ150AHM3/I specifies halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Per Vishay's ordering nomenclature, "H" denotes AEC-Q101 qualification, "M" indicates halogen-free molding compound, and "3" confirms RoHS compliance. This distinguishes it from "E3" (RoHS only) and "HE3" (AEC-Q101 + RoHS, non-halogen-free) variants. The SMBJ150AHM3/I also meets JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 reflow standards.
How does SMBJ150AHM3/I compare to bidirectional TVS diodes like SMBJ150CA?
SMBJ150AHM3/I is unidirectional and intended for DC line protection with defined polarity (cathode band), whereas SMBJ150CA is bidirectional and used in AC or floating signal paths. The SMBJ150AHM3/I exhibits forward voltage drop (~3.5 V at 50 A) and asymmetric conduction, while SMBJ150CA clamps equally in both directions with no polarity marking. Their VBR, VWM, and PPPM are identical, but SMBJ150AHM3/I provides lower leakage in DC-biased applications and avoids false triggering on AC zero-crossings.
What is the thermal resistance of SMBJ150AHM3/I, and how does it affect PCB layout?
The SMBJ150AHM3/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, and 20 °C/W junction-to-lead (RθJL). This means minimal copper pour is required for thermal management in most applications - unlike higher-power TVS devices. Layout best practices for SMBJ150AHM3/I include using full-pad copper fills and avoiding thermal reliefs on anode/cathode traces to maintain low RθJA and ensure reliable 150 °C operation.
SMBJ150AHM3/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:
- Discontinued at Digi-Key
- 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/I FAQ
1.How can I place an order for SMBJ150AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ150AHM3/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/I reliable?
The price and inventory of SMBJ150AHM3/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/I is usually 5 days.
3.What payment methods are accepted for SMBJ150AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ150AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ150AHM3/I?
SMBJ150AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ150AHM3/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/I?
For technical support, including SMBJ150AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ150AHM3/I requirements.
6.How does Aetrix verify that SMBJ150AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ150AHM3/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/I meets industry standards.
7.What is the process for return or replacement of SMBJ150AHM3/I?
All SMBJ150AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ150AHM3/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/I part is unused and in its original packaging.
Return procedure for SMBJ150AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ150AHM3/I Tags
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