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Vishay General Semiconductor - Diodes Division SMBJ7.5AHE3_A/H
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- Part No.:
- SMBJ7.5AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.5AHE3_A/H.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,074
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Product details
Overview
SMBJ7.5AHE3_A/H 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 signal lines in industrial and automotive electronics.
For engineers reviewing the SMBJ7.5AHE3_A/H datasheet, SMBJ7.5AHE3_A/H pinout, SMBJ7.5AHE3_A/H application, or SMBJ7.5AHE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 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 protection device that enters avalanche conduction when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable leakage and low incremental surge resistance, enabling sub-nanosecond response to ESD and lightning-induced transients.
Designed for mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, it delivers 600 W peak pulse power with 0.01 % duty cycle and supports repetitive surge events under derated conditions above TA = 25 °C. Junction temperature range spans −55 °C to +150 °C, and it meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (min/max) | 8.33 V / 9.21 V at IT = 1.0 mA - Confirmed breakdown window ensures reliable turn-on without premature conduction. |
| VC @ IPPM | 12.9 V at 46.5 A - Clamping voltage limits downstream component stress during 10/1000 µs surge events. |
| PPPM | 600 W - Peak pulse power handling capability with standardized 10/1000 µs waveform; validates robustness against IEC 61000-4-5 surges. |
| IPPM | 46.5 A - Peak surge current supported at rated clamping voltage; determines minimum trace width and PCB pad design. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance under standard mounting; informs thermal derating for high-temperature environments. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or industrial control cabinet applications. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity indicated by cathode band; unidirectional configuration only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return plane; completes clamping loop during transient events. |
| Cathode | Protected line connection / Surge sink node | Connected to the line being protected (e.g., 12 V rail or sensor input); conducts avalanche current to anode during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - required for engine control, ADAS, and body electronics. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<100 µA at VWM) across temperature and lifetime, critical for low-power sensor interfaces. |
| 600 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity on 12 V systems without external series impedance. |
| MSL Level 1, 260 °C peak | Enables single-pass lead-free reflow without moisture sensitivity concerns - eliminates bake requirements in high-volume SMT lines. |
| RoHS-compliant & halogen-free option | Base P/NHE3 denotes RoHS-compliant and AEC-Q101 qualified; satisfies EU automotive and industrial environmental compliance mandates. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients in passenger vehicles. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power rail and chassis ground to clamp spikes up to ±100 V. Use Value: Limits voltage seen by downstream DC-DC converters and microcontrollers to ≤12.9 V during 46.5 A surge events, preventing latch-up or gate oxide damage. |
Use Scenario: Safeguarding analog outputs of pressure or temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted directly at connector interface to suppress ESD and inductive kickback from solenoid actuation. Use Value: Maintains signal integrity with <100 µA leakage at 7.5 V, while clamping transients within 1 ns to preserve 12-bit ADC accuracy. |
| Consumer Power Adapter Input Stage | Telecom DC Feeder Line Protection |
|
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters and AC/DC wall adapters. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after primary-side isolation to absorb residual switching spikes and surge coupling. Use Value: Withstands repeated 600 W pulses at 0.01 % duty cycle, extending adapter MTBF in high-surge environments like shared office outlets. |
Use Scenario: Protecting PoE-powered devices (e.g., IP cameras) from lightning-induced surges on 48 V DC feeder lines. IC Role / Device Role / Timing Role: Unidirectional TVS installed at RJ45 jack entry point to divert common-mode surges to local ground plane. Use Value: 12.9 V clamping ensures powered device ICs (e.g., Ethernet PHYs) remain within absolute maximum ratings during 10/1000 µs line surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient 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 qualification testing is not mandated. | Select when cost sensitivity outweighs automotive reliability requirements and lifecycle assurance. |
| SAC7.5 | Same VWM and VC, but in smaller SOD-123 package (lower PPPM = 400 W); higher RθJA (~150 °C/W). | Suitable only for lower-energy transients or space-constrained designs where 600 W headroom is unnecessary. | Choose only if board area is critical and surge threat level is limited to IEC 61000-4-2 ESD or low-duty-cycle switching noise. |
Compared with SMBJ7.5AHE3_A/H, the SMBJ7.5A-E3/52 offers identical protection performance without AEC-Q101 validation, while SAC7.5 trades peak power and thermal capability for footprint reduction - making SMBJ7.5AHE3_A/H the optimal choice for automotive and high-reliability industrial deployments requiring full 600 W surge margin and extended temperature operation.
Availability
SMBJ7.5AHE3_A/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC feeder line surge suppression requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for SMBJ7.5AHE3_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, efficiency, and application-specific optimization.
The SMBJ series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial automation, and communications infrastructure where failure modes must be mitigated without compromising signal integrity or thermal performance.
FAQ
What is the clamping voltage of SMBJ7.5AHE3_A/H at its rated peak pulse current?
The SMBJ7.5AHE3_A/H has a maximum clamping voltage (VC) of 12.9 V at its rated peak pulse current (IPPM) of 46.5 A, measured using the standardized 10/1000 µs double-exponential waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is confirmed in the Vishay datasheet revision 09-Jan-2024, page 2. The SMBJ7.5AHE3_A/H maintains this clamping performance across its full operating temperature range.
Is SMBJ7.5AHE3_A/H suitable for automotive applications?
Yes, SMBJ7.5AHE3_A/H is AEC-Q101 qualified, as indicated by the "HE3" suffix in its part number, confirming compliance with stress tests including temperature cycling, high-temperature reverse bias, and surge endurance. It is explicitly intended for automotive power rail and signal line protection - such as in body control modules, infotainment power supplies, and ADAS sensor interfaces - where reliability under vibration, thermal cycling, and load dump conditions is mandatory.
What does the "_A/H" suffix in SMBJ7.5AHE3_A/H signify?
The "_A/H" suffix in SMBJ7.5AHE3_A/H denotes the packaging configuration: "H" indicates a 7-inch diameter plastic tape-and-reel format with 750 units per reel, while "A" refers to the revision code per Vishay's internal documentation system. This ordering code aligns with Vishay's preferred package code "H" in the Ordering Information table (page 3 of document 88392), confirming commercial and automotive-grade packaging consistency for SMT placement.
How does SMBJ7.5AHE3_A/H differ from bidirectional TVS diodes like SMBJ7.5CA?
The SMBJ7.5AHE3_A/H is unidirectional and features a cathode band marking; it conducts only in reverse bias above VBR, making it ideal for DC power line protection. In contrast, SMBJ7.5CA is bidirectional with no polarity marking and symmetrical clamping in both directions - suited for AC signal lines or differential buses. Electrical differences include higher ID (leakage) limits for low-VWM bidirectional types, whereas SMBJ7.5AHE3_A/H guarantees ≤100 µA at 7.5 V.
What is the thermal resistance and maximum junction temperature of SMBJ7.5AHE3_A/H?
The SMBJ7.5AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal, and a maximum junction temperature (TJ) of +150 °C. These values enable operation in under-hood automotive environments and industrial enclosures up to 85 °C ambient, provided PCB layout adheres to Vishay's recommended pad dimensions and thermal relief guidelines in the datasheet.
SMBJ7.5AHE3_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):
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ7.5AHE3_A/H FAQ
1.How can I place an order for SMBJ7.5AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.5AHE3_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 SMBJ7.5AHE3_A/H reliable?
The price and inventory of SMBJ7.5AHE3_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 SMBJ7.5AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ7.5AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.5AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.5AHE3_A/H?
SMBJ7.5AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.5AHE3_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 SMBJ7.5AHE3_A/H?
For technical support, including SMBJ7.5AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.5AHE3_A/H requirements.
6.How does Aetrix verify that SMBJ7.5AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ7.5AHE3_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 SMBJ7.5AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ7.5AHE3_A/H?
All SMBJ7.5AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.5AHE3_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 SMBJ7.5AHE3_A/H part is unused and in its original packaging.
Return procedure for SMBJ7.5AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.5AHE3_A/H Tags
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