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Vishay General Semiconductor - Diodes Division SMBJ7.5AHM3_B/I
- Part No.:
- SMBJ7.5AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.5AHM3_B/I.pdf
- Description:
- 600W,7.5V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,891
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Product details
Overview
SMBJ7.5AHM3_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 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 1.0 mA test current, 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 to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ7.5AHM3_B/I datasheet, SMBJ7.5AHM3_B/I pinout, SMBJ7.5AHM3_B/I application, or SMBJ7.5AHM3_B/I equivalent, this page delivers verified electrical parameters, thermal derating behavior, AEC-Q101 qualification status, halogen-free RoHS compliance, and real-world clamping performance under surge conditions per IEC 61000-4-5.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, responding within <1 ps to fast-rising transients. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<100 µA at VWM), while the SMB package supports automated placement and meets MSL Level 1 reflow profile (260 °C peak).
It is rated for 150 °C maximum junction temperature and exhibits 0.067 %/°C temperature coefficient of VBR. The device handles 100 A non-repetitive forward surge (8.3 ms half-sine) and maintains clamping integrity across -55 °C to +150 °C operating range - critical for automotive and industrial environments where thermal cycling and ESD immunity are design constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse working voltage before clamping begins; sets upper limit for normal circuit operation without leakage-induced stress. |
| VBR min/max | 8.33 V / 9.21 V at 1.0 mA - Confirmed breakdown threshold range; ensures reliable turn-on during overvoltage events above nominal rail. |
| VC @ IPPM | 12.9 V at 46.5 A - Measured clamping voltage under 10/1000 µs surge; defines worst-case voltage seen by protected downstream components. |
| PPPM | 600 W - Peak pulse power handling capacity; determines survivability against lightning-induced surges (IEC 61000-4-5 Level 4). |
| IFSM | 100 A - Single half-sine surge current rating (8.3 ms); validates robustness against inductive switch-off transients in motor drives. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive modules and high-ambient industrial controllers. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs PCB layout requirements for sustained power dissipation. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode-banded end. Matte tin-plated leads, compliant with J-STD-002 and JESD 22-B102 solderability standards. Molding compound meets UL 94 V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or return path; establishes reference for unidirectional clamping action toward cathode. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 12 V rail or sensor output); absorbs positive transients by avalanche conduction to anode. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against severe transients per IEC 61000-4-5 up to Level 4 (4 kV surge) without degradation. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for ADAS power rails. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC J-STD-20E; eliminates brominated flame retardants for safer end-of-life processing. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns rise time), reducing stress on sensitive CMOS inputs. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and single-reflow processing at 260 °C peak - compatible with standard SMT assembly lines. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Suppressing load-dump transients (up to 35 V, 100 ms) on 12 V battery-fed ECUs in passenger vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and DC-DC input, conducting only during overvoltage events. Use Value: Limits voltage seen by downstream regulators to ≤12.9 V, preventing latch-up or permanent damage to buck controller ICs. |
Use Scenario: Guarding analog outputs of pressure sensors in factory automation PLC modules exposed to relay coil kickback. IC Role / Device Role / Timing Role: Fast-response surge absorber on 0–5 V or 4–20 mA signal lines, shunting energy away from ADC front-end. Use Value: Maintains signal integrity by clamping spikes within 1 ns, avoiding ADC saturation and measurement corruption. |
| Telecom DC Power Input Protection | Consumer Device USB Port ESD Suppression |
|
Use Scenario: Safeguarding 48 V PoE-powered switches against induced surges from nearby AC mains cabling. IC Role / Device Role / Timing Role: Primary-level TVS on secondary-side DC bus, coordinated with upstream MOVs for staged clamping. Use Value: Absorbs 600 W pulses without failure, preserving uptime in network infrastructure equipment operating 24/7. |
Use Scenario: Protecting USB 2.0 data lines and VBUS in smart home hubs subjected to human-body-model (HBM) ESD events. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp on VBUS line, triggered only during overvoltage (not signal toggling). Use Value: Prevents port lockup by limiting VBUS excursions to 12.9 V during ±15 kV contact discharge, per IEC 61000-4-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5AHE3_B/I | RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification; same VWM, VBR, VC, and PPPM. | Approved for commercial/industrial use only; unsuitable for automotive OEM designs requiring halogen-free and AEC-Q101 compliance. | Select when cost-sensitive non-automotive applications require identical clamping performance without halogen-free mandate. |
| SMBJ7.5A-M3/5B | Same halogen-free RoHS compliance and AEC-Q101 qualification; differs only in packaging - 13" reel (3200 pcs) vs. SMBJ7.5AHM3_B/I's 13" reel with B/I marking variant. | No functional difference; identical electrical and thermal specs; intended for volume procurement with alternate tape/reel coding. | Choose for large-volume production where distributor inventory uses M3/5B nomenclature but full specification match is confirmed. |
Compared with SMBJ7.5AHM3_B/I, the HE3 variant trades halogen-free content and automotive qualification for lower cost in commercial systems, while the M3/5B variant offers identical performance in a different packaging format - enabling flexibility in supply chain sourcing without design change.
Availability
SMBJ7.5AHM3_B/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and consumer USB power delivery systems requiring stable component supply with guaranteed halogen-free and AEC-Q101-compliant TVS protection.
Supply support for SMBJ7.5AHM3_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 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 was developed to deliver high-power transient suppression in compact surface-mount packages for automotive, industrial, and communications systems where space, thermal performance, and qualification rigor are critical.
FAQ
What is the maximum clamping voltage of SMBJ7.5AHM3_B/I under surge conditions?
The SMBJ7.5AHM3_B/I has a maximum clamping voltage (VC) of 12.9 V when subjected to its rated peak pulse current of 46.5 A using the standardized 10/1000 µs waveform. This value is measured and guaranteed per Vishay's datasheet revision 09-Jan-2024 (Document Number: 88392), ensuring predictable overvoltage protection for downstream ICs and MOSFETs connected to the same rail as SMBJ7.5AHM3_B/I.
Is SMBJ7.5AHM3_B/I qualified for automotive applications?
Yes, SMBJ7.5AHM3_B/I is AEC-Q101 qualified, as indicated by the "HM3" suffix in its part number. This certification confirms successful completion of stress tests including high-temperature reverse bias, temperature cycling, and ESD robustness - making SMBJ7.5AHM3_B/I suitable for under-hood and body-control module applications where reliability under harsh environmental conditions is mandatory.
Does SMBJ7.5AHM3_B/I meet RoHS and halogen-free requirements?
Yes, SMBJ7.5AHM3_B/I complies with both RoHS Directive 2011/65/EU and halogen-free standards per JEDEC JS709. The "HM3" designation explicitly denotes halogen-free, RoHS-compliant, and AEC-Q101-qualified construction - verified in Vishay's ordering information table and mechanical data section of document 88392.
What is the thermal resistance of SMBJ7.5AHM3_B/I from junction to ambient?
The typical junction-to-ambient thermal resistance (RθJA) of SMBJ7.5AHM3_B/I is 100 °C/W when mounted on the minimum recommended pad layout (0.2" × 0.2" copper pads per terminal). This value is critical for calculating allowable power dissipation at elevated ambient temperatures and must be applied with derating curves from Figure 2 in the Vishay datasheet for SMBJ7.5AHM3_B/I.
How does SMBJ7.5AHM3_B/I differ from SMBJ7.5A-E3/52?
SMBJ7.5AHM3_B/I is halogen-free, RoHS-compliant, and AEC-Q101-qualified, whereas SMBJ7.5A-E3/52 is RoHS-compliant but not halogen-free and lacks automotive qualification. Both share identical electrical parameters (VWM, VBR, VC, PPPM), but SMBJ7.5AHM3_B/I is designated for automotive and high-reliability industrial use, while SMBJ7.5A-E3/52 targets general-purpose commercial applications - a distinction confirmed in Vishay's ordering information table for SMBJ7.5AHM3_B/I.
SMBJ7.5AHM3_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):
- 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/I FAQ
1.How can I place an order for SMBJ7.5AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.5AHM3_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 SMBJ7.5AHM3_B/I reliable?
The price and inventory of SMBJ7.5AHM3_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 SMBJ7.5AHM3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ7.5AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.5AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.5AHM3_B/I?
SMBJ7.5AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.5AHM3_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 SMBJ7.5AHM3_B/I?
For technical support, including SMBJ7.5AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.5AHM3_B/I requirements.
6.How does Aetrix verify that SMBJ7.5AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ7.5AHM3_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 SMBJ7.5AHM3_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ7.5AHM3_B/I?
All SMBJ7.5AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.5AHM3_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 SMBJ7.5AHM3_B/I part is unused and in its original packaging.
Return procedure for SMBJ7.5AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.5AHM3_B/I Tags
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