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Vishay General Semiconductor - Diodes Division SMBJ7.5AHM3_B/H
- Part No.:
- SMBJ7.5AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.5AHM3_B/H.pdf
- Description:
- 600W,7.5V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,470
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Product details
Overview
SMBJ7.5AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping inductive switching transients and ESD events on power rails and signal lines. It features a 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 1.0 mA, 12.9 V maximum clamping voltage (VC) at 46.5 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used in automotive body control modules, industrial sensor interfaces, and USB power input protection.
For engineers reviewing the SMBJ7.5AHM3_B/H datasheet, SMBJ7.5AHM3_B/H pinout, SMBJ7.5AHM3_B/H application, or SMBJ7.5AHM3_B/H equivalent, this page delivers verified electrical parameters, thermal derating behavior, AEC-Q101 qualification status, halogen-free RoHS compliance, and real-world clamping performance data directly traceable to Vishay Document #88392 (Rev. 09-Jan-2024).
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, conducting only when reverse voltage exceeds its specified VBR range (8.33–9.21 V). Its low incremental surge resistance ensures minimal voltage overshoot during fast transients, while the glass-passivated junction enables stable long-term reliability under repetitive surge stress.
The device is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), operates from –55 °C to +150 °C junction temperature, and exhibits a positive temperature coefficient of VBR (+0.067 %/°C), enabling predictable thermal drift in high-temperature environments like engine compartments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse operating voltage before significant leakage; sets safe margin below system rail (e.g., 9 V battery or 12 V supply). |
| VBR @ IT = 1.0 mA | 8.33–9.21 V - Measured breakdown range confirming robust avalanche initiation threshold for reliable transient detection. |
| VC @ IPPM = 46.5 A | 12.9 V - Clamped voltage during 600 W surge; defines worst-case overvoltage seen by downstream ICs (e.g., MCU I/O or LDO input). |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; supports common ISO 7637-2 Pulse 1/2/5a test profiles. |
| IPPM | 46.5 A - Peak surge current capability at rated clamping voltage; validates protection against 50–100 A automotive load dump surges. |
| TJmax | +150 °C - Maximum junction temperature; enables use in under-hood applications without thermal derating penalties up to ambient 105 °C. |
| Package | SMB (DO-214AA) - Industry-standard 2-pin SMD outline (5.21 × 4.06 mm), compatible with automated pick-and-place and reflow soldering per J-STD-020 MSL Level 1. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode-banded unidirectional configuration. Matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102. Polarity indicated by black band denoting cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes conduction loop during transient clamping event. |
| Cathode | High-side connection point | Connected to protected line (e.g., 12 V rail); avalanche conduction initiates here when VWM is exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validated clamping capacity for automotive load dump and inductive kick events per ISO 7637-2. |
| AEC-Q101 qualified (HM3 suffix) | Qualified for automotive electronics per stress test requirements including HTGB, HTRB, and TCT. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC JS709E; supports green manufacturing and end-of-life recycling. |
| Low clamping ratio (VC/VWM = 1.72) | Minimizes overvoltage stress on protected ICs - critical for 3.3 V or 5 V logic interfacing with 12 V systems. |
| MSL Level 1 (260 °C peak) | Enables single-reflow assembly without moisture sensitivity concerns; eliminates bake-out requirement. |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Protects microcontroller GPIO and LIN bus transceivers from load dump and alternator ripple in vehicle door modules. IC Role / Device Role: Unidirectional TVS clamp placed between 12 V supply rail and ground, shunting surge energy away from sensitive ICs. Use Value: Limits transient voltage to ≤12.9 V during 46.5 A surges, preventing latch-up or gate oxide damage in 3.3 V MCUs. |
Use Scenario: Shields analog front-end amplifiers and ADC inputs in factory-floor pressure sensors exposed to relay coil switching noise. IC Role / Device Role: Rail-to-rail TVS on 5 V sensor supply line, absorbing 10/1000 µs transients induced by nearby 24 V solenoid actuation. Use Value: Maintains signal integrity by clamping spikes within 1.2 ns response time, avoiding ADC saturation or offset drift. |
| USB-C Power Input Protection | Telecom DSL Line Interface |
|
Use Scenario: Guards USB-C port VBUS line against hot-plug insertion transients and ESD events in portable docking stations. IC Role / Device Role: Primary overvoltage clamp upstream of buck converter, coordinated with secondary polymer PTC and ESD diode array. Use Value: Withstands ≥1000 surges at 600 W without parameter shift, ensuring field-reliability across 5-year product lifecycle. |
Use Scenario: Suppresses lightning-induced surges on twisted-pair DSL lines entering residential gateways. IC Role / Device Role: First-stage protector in hybrid protection circuit, paired with gas discharge tube (GDT) for coarse/finer clamping staging. Use Value: Provides <12.9 V clamping at 46.5 A while maintaining <1 µA leakage at 7.5 V, minimizing standby power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5AHE3_B/H | Same electrical specs, but RoHS-compliant commercial grade (non-AEC-Q101); no halogen-free certification. | Lacks automotive qualification; suitable for industrial/commercial designs where AEC-Q101 is not mandated. | Select SMBJ7.5AHE3_B/H for cost-sensitive non-automotive applications requiring identical clamping performance. |
| SMAJ7.5A-M3 | Lower 400 W PPPM rating; SMA package (smaller footprint, higher RθJA = 140 °C/W vs. 100 °C/W). | Reduced surge margin and thermal performance; limited to lower-energy transients or lower ambient temperatures. | Choose SMAJ7.5A-M3 only if board space is constrained and surge threat level is ≤400 W (e.g., consumer IoT, not automotive). |
Compared with SMBJ7.5AHM3_B/H, SMBJ7.5AHE3_B/H offers identical protection performance without AEC-Q101 validation, while SMAJ7.5A-M3 trades 33 % lower surge capacity and inferior thermal dissipation for smaller PCB area - making SMBJ7.5AHM3_B/H the optimal choice for AEC-Q101-compliant, thermally demanding automotive and industrial deployments.
Availability
SMBJ7.5AHM3_B/H is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, USB power delivery systems, and telecom line protection requiring stable component supply, halogen-free compliance, and AEC-Q101 qualification.
Supply support for SMBJ7.5AHM3_B/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, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where robustness against load dump, ESD, and inductive switching is mission-critical.
FAQ
What is the clamping voltage of SMBJ7.5AHM3_B/H at its rated peak pulse current?
The SMBJ7.5AHM3_B/H has a maximum clamping voltage (VC) of 12.9 V when subjected to its rated peak pulse current of 46.5 A (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 - critical for ensuring compatibility with 3.3 V or 5 V ICs downstream of the SMBJ7.5AHM3_B/H.
Is SMBJ7.5AHM3_B/H qualified for automotive applications?
Yes, SMBJ7.5AHM3_B/H is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's official datasheet (Document #88392, Rev. 09-Jan-2024). This qualification covers stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT), validating its suitability for under-hood and chassis-mounted automotive electronics.
What does the "HM3" suffix indicate in SMBJ7.5AHM3_B/H?
The "HM3" suffix in SMBJ7.5AHM3_B/H denotes halogen-free, RoHS-compliant, and AEC-Q101-qualified construction. It distinguishes this variant from commercial-grade versions (e.g., E3) and confirms compliance with JEDEC JS709E material standards, EU RoHS Directive 2011/65/EU, and automotive reliability requirements - essential for Tier 1 supplier BOMs.
How does SMBJ7.5AHM3_B/H compare to SMBJ7.5AHE3_B/H?
SMBJ7.5AHM3_B/H and SMBJ7.5AHE3_B/H share identical electrical specifications (VWM, VBR, VC, PPPM) and packaging, but differ in qualification: HM3 is halogen-free and AEC-Q101 qualified, whereas HE3 is RoHS-compliant commercial grade without automotive validation. Use SMBJ7.5AHM3_B/H where automotive compliance is mandatory; SMBJ7.5AHE3_B/H suffices for industrial or consumer applications.
What is the thermal resistance of SMBJ7.5AHM3_B/H from junction to ambient?
The typical thermal resistance from junction to ambient (RθJA) for SMBJ7.5AHM3_B/H is 100 °C/W, measured on a standard 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad layout per JEDEC standards. This value enables accurate thermal derating calculations - for example, at 75 °C ambient, the device supports ~3.75 W continuous power dissipation before reaching its 150 °C maximum junction temperature.
SMBJ7.5AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 46.5A
- 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)
SMBJ7.5AHM3_B/H FAQ
1.How can I place an order for SMBJ7.5AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.5AHM3_B/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 SMBJ7.5AHM3_B/H reliable?
The price and inventory of SMBJ7.5AHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ7.5AHM3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ7.5AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.5AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.5AHM3_B/H?
SMBJ7.5AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.5AHM3_B/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 SMBJ7.5AHM3_B/H?
For technical support, including SMBJ7.5AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.5AHM3_B/H requirements.
6.How does Aetrix verify that SMBJ7.5AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ7.5AHM3_B/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 SMBJ7.5AHM3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ7.5AHM3_B/H?
All SMBJ7.5AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.5AHM3_B/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 SMBJ7.5AHM3_B/H part is unused and in its original packaging.
Return procedure for SMBJ7.5AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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