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Vishay General Semiconductor - Diodes Division SMBJ150AHE3_A/H
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- Part No.:
- SMBJ150AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ150AHE3_A/H.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,225
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Product details
Overview
SMBJ150AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for robust overvoltage protection of DC 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, and 600 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the SMBJ150AHE3_A/H datasheet, SMBJ150AHE3_A/H pinout, SMBJ150AHE3_A/H application, or SMBJ150AHE3_A/H equivalent, this device is selected for high-reliability DC bus protection in automotive power modules, industrial motor drives, and telecom power supplies where fast response (<1 ns), low clamping ratio, and AEC-Q101 qualification are critical.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, leveraging a glass-passivated silicon junction to deliver sub-nanosecond response to transients. Its thermal resistance (RθJA = 100 °C/W) and junction temperature limit (TJ = 150 °C) support operation under sustained surge conditions when mounted on 5.0 mm × 5.0 mm copper pads.
The device complies with ANSI/IEEE C62.35 for surge suppression and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. The HE3 suffix confirms RoHS compliance and AEC-Q101 qualification-required for automotive-grade power rail protection in engine control units and ADAS power domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA; sets upper limit for protected line voltage. |
| VBR (min/max) | 167 V / 185 V at IT = 1 mA - Confirmed breakdown range ensures reliable triggering above normal operating voltage with margin. |
| VC @ IPPM | 243 V at 2.5 A - Clamping voltage during 10/1000 µs surge; defines worst-case voltage seen by downstream ICs. |
| PPPM | 600 W - Peak pulse power handling capability; supports repetitive 0.01% duty cycle surges without degradation. |
| IFSM | 100 A - Non-repetitive forward surge current rating (8.3 ms half-sine); validates robustness against inrush or fault currents. |
| TJ max | 150 °C - Maximum junction temperature; enables operation in under-hood automotive environments and enclosed industrial enclosures. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient; requires minimum 5.0 mm × 5.0 mm copper pad per terminal for rated derating. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by band marking on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path (cathode-biased during clamping) | Connected to lower-potential side of protected line; forms series path with cathode during transient clamp. |
| Cathode | Reverse-biased terminal during normal operation | Marked end; connected to higher-potential rail (e.g., +12 V, +24 V, +48 V); conducts avalanche current during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power electronics including ECU, body control modules, and infotainment power rails. |
| 600 W peak pulse power (10/1000 µs) | Withstands ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 Level 4 surges without failure. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes stress on downstream MOSFETs, gate drivers, and PMICs during clamping events. |
| Glass passivated junction | Ensures stable VBR over temperature and lifetime; eliminates risk of moisture-induced parameter drift. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning or baking. |
Applications
| Automotive Power Rail Protection | Industrial DC Motor Drive Control |
|---|---|
|
Use Scenario: Protecting 24 V supply inputs of engine control units (ECUs) against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and input filter capacitor. Use Value: Limits transient voltage to ≤243 V during 12 V system load dump (ISO 16750-2), preventing damage to 36 V-rated DC-DC controllers. |
Use Scenario: Safeguarding gate driver ICs and IGBTs in 48 V industrial motor inverters from switching-induced voltage spikes. IC Role / Device Role / Timing Role: Parallel-connected TVS across DC bus to clamp commutation spikes before they reach power stage. Use Value: Sub-1 ns response captures fast dV/dt spikes (≥100 V/ns), reducing gate oxide stress and preventing false turn-on of power devices. |
| Telecom 48 V Backup Power Interface | Medical Imaging Power Supply Input |
|
Use Scenario: Shielding primary-side rectifier and PFC controller in -48 V telecom backup systems from lightning-induced surges on battery feed lines. IC Role / Device Role / Timing Role: Standoff-rated TVS on input after fuse but before bulk capacitor; coordinated with upstream MOV. Use Value: 150 V VWM allows full utilization of -48 V nominal range while clamping to 243 V - within safe margin of 300 V-rated input capacitors. |
Use Scenario: Securing auxiliary 24 V logic supply in MRI and CT scanner subsystems against ESD and EFT events in hospital environments. IC Role / Device Role / Timing Role: Final-stage TVS on regulated output rail feeding FPGA and ADC power domains. Use Value: AEC-Q101 qualification ensures long-term reliability under thermal cycling and vibration; RθJA = 100 °C/W supports convection-cooled medical chassis design. |
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, but commercial-grade (non-AEC-Q101); RoHS-compliant only. | Lacks automotive qualification; unsuitable for under-hood or safety-critical ECUs. | Select when cost sensitivity outweighs automotive qualification requirements. |
| SMCJ150AHE3_A/H | Same VWM/VBR/VC, but SMC (DO-214AB) package - larger footprint, higher IPPM (40 A vs. 2.5 A). | Higher surge capacity suits mains-connected equipment; incompatible PCB layout due to larger body. | Choose for >10 kA surge immunity needs where board space permits larger package. |
Compared with SMBJ150A-E3/52, the SMBJ150AHE3_A/H adds AEC-Q101 validation for automotive use; versus SMCJ150AHE3_A/H, it trades surge current headroom for compact SMB footprint - enabling dense placement near connectors and IC power pins.
Availability
SMBJ150AHE3_A/H is available at Aetrix Electronics and suitable for automotive power management, industrial motor control, and telecom infrastructure requiring stable component supply with guaranteed AEC-Q101 compliance and traceable lot history.
Supply support for SMBJ150AHE3_A/H 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, precision, and automotive-grade qualification.
The SMBJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where consistent clamping performance and long-term stability are mandatory.
FAQ
What is the clamping voltage of SMBJ150AHE3_A/H at its rated peak pulse current?
The SMBJ150AHE3_A/H 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 ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ150AHE3_A/H maintains this clamping performance across its qualified temperature range (-55 °C to +150 °C) when mounted per recommended pad layout.
Is SMBJ150AHE3_A/H suitable for automotive applications?
Yes, SMBJ150AHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix. It meets stress test requirements for temperature cycling, humidity, mechanical shock, and surge immunity relevant to engine control units, body electronics, and ADAS power domains. The SMBJ150AHE3_A/H is not a generic commercial part - its qualification data, lot traceability, and packaging (tape-and-reel with humidity indicator) align with automotive supply chain standards.
How does the SMBJ150AHE3_A/H differ from bidirectional variants like SMBJ150CA?
The SMBJ150AHE3_A/H is unidirectional, meaning it conducts only in reverse bias (cathode-to-anode) during clamping and blocks forward current up to 50 A IFSM. In contrast, SMBJ150CA provides symmetrical clamping in both directions - useful for AC lines or differential signal protection. The SMBJ150AHE3_A/H's unidirectional structure yields lower leakage (<1 µA at 150 V) and tighter VBR tolerance than bidirectional equivalents, making it preferred for DC rail protection where polarity is fixed.
What is the thermal resistance and recommended PCB layout for SMBJ150AHE3_A/H?
The SMBJ150AHE3_A/H 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. To achieve rated power dissipation and avoid thermal runaway during repetitive surges, the PCB must provide these minimum pad dimensions with internal or external thermal vias. The SMBJ150AHE3_A/H datasheet specifies this layout in Figure 1 of Document 88392; deviation reduces surge endurance and accelerates parameter drift.
Does SMBJ150AHE3_A/H meet RoHS and halogen-free requirements?
Yes, the "HE3" suffix in SMBJ150AHE3_A/H denotes RoHS-compliant construction per EU Directive 2011/65/EU and exemption 7a. It contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE. While not halogen-free (which would require "HM3"), the SMBJ150AHE3_A/H uses brominated epoxy molding compound meeting UL 94 V-0 flammability rating. Full material declarations are available under Vishay document 99912.
SMBJ150AHE3_A/H 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:
- 243V
- Current - Peak Pulse (10/1000µs):
- 2.5A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ150AHE3_A/H FAQ
1.How can I place an order for SMBJ150AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ150AHE3_A/H 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 SMBJ150AHE3_A/H reliable?
The price and inventory of SMBJ150AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ150AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ150AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ150AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ150AHE3_A/H?
SMBJ150AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ150AHE3_A/H 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 SMBJ150AHE3_A/H?
For technical support, including SMBJ150AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ150AHE3_A/H requirements.
6.How does Aetrix verify that SMBJ150AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ150AHE3_A/H 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 SMBJ150AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ150AHE3_A/H?
All SMBJ150AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ150AHE3_A/H, 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 SMBJ150AHE3_A/H part is unused and in its original packaging.
Return procedure for SMBJ150AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ150AHE3_A/H Tags
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