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Vishay General Semiconductor - Diodes Division SMBJ7.5AHE3_B/I
- Part No.:
- SMBJ7.5AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.5AHE3_B/I.pdf
- Description:
- 600W,7.5V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,480
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Product details
Overview
SMBJ7.5AHE3_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 DC power rails and signal lines. It features 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 to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ7.5AHE3_B/I datasheet, SMBJ7.5AHE3_B/I pinout, SMBJ7.5AHE3_B/I application, or SMBJ7.5AHE3_B/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, 12.9 V clamping performance at rated surge current, thermal resistance (RθJA = 100 °C/W), and RoHS-compliant matte tin-plated leads suitable for automated SMT assembly.
Technical Context
This TVS diode operates as a fast-acting shunt protector: under normal bias it presents high impedance (<100 µA leakage at 7.5 V), then avalanches sharply at VBR ≥8.33 V to clamp transient overvoltages. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance, enabling sub-nanosecond response to ESD and lightning-induced surges.
Designed for PCB-level protection of 5–12 V systems, SMBJ7.5AHE3_B/I supports repetitive surge duty cycles up to 0.01 % and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. The cathode-band-marked SMB package allows unambiguous orientation during placement and ensures reliable thermal dissipation via 0.2" × 0.2" copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 7.5 V - Maximum continuous reverse voltage before significant leakage; sets operating margin for 5 V or 9 V rail protection. |
| VBR (Breakdown) | 8.33–9.21 V at 1.0 mA - Confirmed avalanche onset range; ensures reliable triggering above nominal system voltage. |
| VC (Clamping) | 12.9 V at 46.5 A (10/1000 µs) - Maximum voltage seen by protected circuit during worst-case surge; defines safe stress limit for downstream ICs. |
| PPPM | 600 W - Peak pulse power handling capability; enables robust protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges. |
| IPPM | 46.5 A - Peak surge current supported without failure; validated with 10/1000 µs waveform and derated above 25 °C. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in enclosed industrial enclosures with ambient up to +85 °C. |
| RθJA | 100 °C/W - Thermal resistance junction-to-ambient; requires minimum 0.2" × 0.2" copper pad per terminal for rated power dissipation. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode-indicated by black band. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or common return path; forms current sink during transient clamping. |
| Cathode | Protected line input | Connected to the line being protected (e.g., 5 V rail or sensor output); avalanche conduction occurs from cathode to anode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; suffix HE3 denotes qualification. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges up to 1 kV open-circuit / 0.5 kA short-circuit without degradation. |
| 12.9 V clamping at 46.5 A | Ensures protected ICs (e.g., microcontrollers, CAN transceivers) remain below absolute maximum ratings during surge events. |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles; no floor life limitation or baking required prior to assembly. |
| Glass passivated junction | Provides stable VBR tolerance and low leakage (<100 µA at VWM) across -55 °C to +150 °C operating range. |
Applications
| Industrial Power Supply Protection | Automotive Sensor Interface Protection |
|---|---|
|
Use Scenario: 12 V DC input stage of programmable logic controller (PLC) power module exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between input rail and ground to clamp transients before they reach DC/DC converter ICs. Use Value: Limits voltage excursion to ≤12.9 V during 46.5 A surges, preventing latch-up or gate oxide damage in upstream regulators and controllers. |
Use Scenario: Signal line (e.g., analog output of pressure sensor) in engine control unit (ECU) subject to ISO 7637-2 pulse 1 and pulse 2a. IC Role / Device Role / Timing Role: Fast-response TVS connected inline with sensor output trace to suppress coupled transients before reaching ADC input. Use Value: Clamps induced spikes within nanoseconds while maintaining <100 µA leakage at 5 V, preserving sensor accuracy and offset stability. |
| Telecom Line Card Surge Protection | Consumer Device USB Port Protection |
|
Use Scenario: -48 V DC feed line in telecom base station line card vulnerable to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary shunt protector on power entry point, coordinated with upstream fuse and secondary filtering. Use Value: Absorbs 600 W transient energy without thermal runaway, enabling compliance with GR-1089-CORE Level 3 surge immunity requirements. |
Use Scenario: VBUS line of USB 2.0 port in smart home hub exposed to ESD events per IEC 61000-4-2 ±8 kV contact discharge. IC Role / Device Role / Timing Role: Secondary-level TVS after common-mode choke, providing low-capacitance (<100 pF) overvoltage clamping. Use Value: Responds in <1 ns to divert >30 A ESD current away from USB PHY, preserving signal integrity and preventing data corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5A-E3/52 | Commercial-grade (non-AEC-Q101), same electrical specs and SMB package; RoHS-compliant but not automotive-qualified. | Limited to non-automotive industrial or consumer use where AEC-Q101 is not mandated. | Select when cost sensitivity outweighs automotive qualification requirement and full lifecycle traceability is not needed. |
| SMBJ7.5CAHE3_B/I | Bidirectional variant; symmetric VBR = 8.33–9.21 V, same VC = 12.9 V, but supports AC-coupled or floating signal lines. | Required for differential or bidirectional bus protection (e.g., RS-485, CAN FD) where polarity reversal may occur. | Choose only if the protected line lacks defined DC bias or must tolerate reverse voltage transients. |
Compared with SMBJ7.5A-E3/52, SMBJ7.5AHE3_B/I adds AEC-Q101 qualification and enhanced process controls for automotive use; compared with SMBJ7.5CAHE3_B/I, it provides lower capacitance and optimized clamping for unidirectional DC rails - making SMBJ7.5AHE3_B/I the preferred choice for 5–12 V power rail protection in harsh-environment OEM designs.
Availability
SMBJ7.5AHE3_B/I is available at Aetrix Electronics and suitable for industrial power supply protection, automotive sensor interface hardening, and telecom line card surge mitigation requiring stable component supply, full AEC-Q101 traceability, and RoHS/halogen-free compliance.
Supply support for SMBJ7.5AHE3_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, power efficiency, and automotive-grade validation.
The SMBJ series is engineered for board-level transient suppression in demanding environments - targeting automotive, industrial, and telecom applications where robustness, repeatable clamping, and AEC-Q101 compliance are mandatory design requirements.
FAQ
What is the clamping voltage of SMBJ7.5AHE3_B/I at its rated peak pulse current?
The SMBJ7.5AHE3_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 under specified test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads) and defines the upper voltage limit imposed on protected circuits during surge events. The SMBJ7.5AHE3_B/I maintains this clamping performance across its qualified operating temperature range.
Is SMBJ7.5AHE3_B/I suitable for automotive applications?
Yes, SMBJ7.5AHE3_B/I is AEC-Q101 qualified, as indicated by the "HE3" suffix in its part number. It undergoes rigorous stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD verification per automotive standards. This makes SMBJ7.5AHE3_B/I appropriate for under-hood and cabin electronics such as body control modules, sensor interfaces, and infotainment power rails where reliability under thermal and electrical stress is critical.
What does the "B/I" suffix mean in SMBJ7.5AHE3_B/I?
The "B/I" suffix in SMBJ7.5AHE3_B/I specifies packaging and reel configuration: "B" denotes the revision level (Revision B per Vishay's internal documentation), and "I" indicates 13-inch diameter plastic tape-and-reel packaging containing 3200 units per reel. This format supports high-volume SMT assembly with industry-standard feeder compatibility and moisture-sensitive level (MSL) 1 handling per J-STD-020.
How does SMBJ7.5AHE3_B/I differ from SMBJ7.5A-E3/52?
SMBJ7.5AHE3_B/I and SMBJ7.5A-E3/52 share identical electrical characteristics and SMB (DO-214AA) package dimensions, but differ in qualification and traceability: SMBJ7.5AHE3_B/I is AEC-Q101 qualified and manufactured under automotive process controls, while SMBJ7.5A-E3/52 is commercial-grade only. Both are RoHS-compliant, but SMBJ7.5AHE3_B/I includes full automotive lot traceability and extended reliability testing - essential for Tier 1 automotive suppliers.
What is the maximum reverse leakage current for SMBJ7.5AHE3_B/I at its stand-off voltage?
At its rated stand-off voltage (VWM) of 7.5 V and ambient temperature of 25 °C, the SMBJ7.5AHE3_B/I exhibits a maximum reverse leakage current (ID) of 100 µA. This low leakage ensures minimal power loss in standby mode and preserves accuracy in precision analog circuits. Leakage remains within specification across the full operating temperature range (-55 °C to +150 °C), supporting stable performance in thermally demanding applications.
SMBJ7.5AHE3_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)
SMBJ7.5AHE3_B/I FAQ
1.How can I place an order for SMBJ7.5AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.5AHE3_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 SMBJ7.5AHE3_B/I reliable?
The price and inventory of SMBJ7.5AHE3_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 SMBJ7.5AHE3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ7.5AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.5AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.5AHE3_B/I?
SMBJ7.5AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.5AHE3_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 SMBJ7.5AHE3_B/I?
For technical support, including SMBJ7.5AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.5AHE3_B/I requirements.
6.How does Aetrix verify that SMBJ7.5AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ7.5AHE3_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 SMBJ7.5AHE3_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ7.5AHE3_B/I?
All SMBJ7.5AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.5AHE3_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 SMBJ7.5AHE3_B/I part is unused and in its original packaging.
Return procedure for SMBJ7.5AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.5AHE3_B/I Tags
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Diodes Incorporated
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