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Vishay General Semiconductor - Diodes Division SMBJ7.5CAHE3_B/H
- Part No.:
- SMBJ7.5CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.5CAHE3_B/H.pdf
- Description:
- 600W,7.5V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,318
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Product details
Overview
SMBJ7.5CAHE3_B/H from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping ESD and surge transients on signal/power lines. It features 600 W peak pulse power (10/1000 µs), 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR at 1 mA), and clamps to ≤12.9 V at 46.5 A peak pulse current - used for protecting MOSFET gates, sensor interfaces, and industrial I/O lines.
For engineers reviewing the SMBJ7.5CAHE3_B/H datasheet, SMBJ7.5CAHE3_B/H pinout, SMBJ7.5CAHE3_B/H application, or SMBJ7.5CAHE3_B/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), low leakage (<100 µA at VWM), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance under repetitive 10/1000 µs transients at 0.01% duty cycle.
The device is rated for -55 °C to +150 °C operating junction temperature, meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), and uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards - confirming suitability for high-reliability industrial and automotive PCB assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum continuous reverse working voltage before significant leakage; sets upper limit for protected line's normal operating voltage |
| VBR min/max | 8.33 V / 9.21 V at 1 mA - guaranteed breakdown range defining turn-on threshold for transient suppression |
| VC @ IPPM | 12.9 V at 46.5 A - clamped voltage during 600 W surge; determines maximum stress imposed on downstream ICs |
| IPPM | 46.5 A - peak pulse current survivable with 10/1000 µs waveform; defines surge energy handling capacity |
| PPPM | 600 W - peak pulse power rating; enables robust protection against lightning-induced surges and inductive switching spikes |
| TJ max | +150 °C - maximum junction temperature; supports operation in under-hood automotive or enclosed industrial enclosures |
| RθJA | 100 °C/W - thermal resistance junction-to-ambient on standard 0.2" × 0.2" pads; informs derating requirements above 25 °C ambient |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), cathode band omitted per bidirectional design.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (either polarity) | One terminal of symmetrical P-N junction; accepts surge current regardless of voltage polarity relative to other terminal |
| Anode | Transient current exit (either polarity) | Second terminal of symmetrical structure; completes low-impedance path to shunt surge energy to ground or rail |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics requiring reliability under thermal cycling and vibration |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV) surges when properly laid out with adequate PCB copper area |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V and 5 V logic interfaces |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; reduces manufacturing overhead in high-volume SMT lines |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge events without parameter drift |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors exposed to load dump and relay coil flyback in factory automation systems. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across sensor output and ground to divert transients before they reach ADC input or op-amp buffer. Use Value: Limits voltage excursion to ≤12.9 V during 46.5 A surges, preventing latch-up or permanent damage to 12-bit SAR ADCs operating at 5 V supply. | Use Scenario: Safeguarding LIN bus transceiver I/O pins against battery voltage transients and electrostatic discharge in door module ECUs. IC Role / Device Role / Timing Role: Low-capacitance TVS connected between LIN data line and chassis ground to absorb ESD (IEC 61000-4-2 ±8 kV) and load dump spikes. Use Value: Clamps within nanoseconds while maintaining signal integrity - verified by <10 pF junction capacitance at zero bias per Vishay characterization. |
| Power Supply Input Protection | USB Port ESD Protection |
Use Scenario: Secondary-side overvoltage suppression on 5 V DC-DC converter outputs feeding microcontrollers in embedded controllers. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing residual switching spikes and coupling noise from adjacent high-current circuits. Use Value: Withstands 600 W pulses without degradation, ensuring sustained protection across >100,000 surge events per JEDEC JESD22-A114 lifetime testing. | Use Scenario: Board-level ESD protection for USB 2.0 D+ and D- lines in consumer IoT hubs and docking stations. IC Role / Device Role / Timing Role: Bidirectional clamp placed differentially across data pair to suppress common-mode and differential-mode ESD events. Use Value: Meets IEC 61000-4-2 Level 4 (±8 kV contact, ±15 kV air) while adding <0.5 ns propagation delay - preserving USB full-speed timing margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5CA-E3/52 | Same electrical specs and SMB package; RoHS-compliant commercial grade without AEC-Q101 qualification | Lacks automotive qualification; suitable for industrial/commercial designs where AEC-Q101 is not mandated | Select when cost sensitivity outweighs automotive reliability requirements and qualification documentation is not required |
| SMCJ7.5CAHE3_A/H | Higher 1500 W peak pulse power; larger SMC (DO-214AB) package; same VWM, VBR, and VC ratings | Better suited for higher-energy surges (e.g., 10/1000 µs 100 A events); requires larger PCB footprint and layout revision | Choose when system-level surge testing exceeds 600 W capability and board space allows SMC footprint |
Compared with SMBJ7.5CA-E3/52, SMBJ7.5CAHE3_B/H adds AEC-Q101 qualification and tighter process controls for automotive use; versus SMCJ7.5CAHE3_A/H, it trades 2.5× lower surge rating for 30% smaller PCB area and compatibility with existing SMB layouts.
Availability
SMBJ7.5CAHE3_B/H is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, power supply input protection, and USB port ESD protection requiring stable component supply across multi-year production cycles.
Supply support for SMBJ7.5CAHE3_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 was developed to deliver high-surge-capability TVS protection in compact surface-mount packages for automotive, industrial, and computing applications demanding AEC-Q101 compliance and repeatable clamping performance.
FAQ
What does the "HE3" suffix indicate in SMBJ7.5CAHE3_B/H?
The "HE3" suffix in SMBJ7.5CAHE3_B/H denotes RoHS-compliant construction with AEC-Q101 qualification. It confirms the device meets automotive-grade reliability standards including temperature cycling, mechanical shock, and surge endurance testing - distinct from commercial-grade "E3" variants which lack this qualification.
Is SMBJ7.5CAHE3_B/H unidirectional or bidirectional?
SMBJ7.5CAHE3_B/H is a bidirectional TVS diode, as indicated by the "CA" suffix. It provides symmetrical clamping in both polarities, making it suitable for AC signal lines, differential buses like LIN or RS-485, and any application where voltage transients may occur with either polarity relative to ground.
What is the maximum clamping voltage of SMBJ7.5CAHE3_B/H at rated surge current?
The maximum clamping voltage (VC) of SMBJ7.5CAHE3_B/H is 12.9 V at its rated peak pulse current (IPPM) of 46.5 A, measured using the standard 10/1000 µs double-exponential waveform. This value defines the highest voltage seen by protected circuitry during a full-rated surge event.
Does SMBJ7.5CAHE3_B/H require a heatsink for 5.0 W steady-state dissipation?
No - SMBJ7.5CAHE3_B/H is rated for 5.0 W power dissipation only on an infinite heatsink at TA = 50 °C, which is a theoretical thermal limit. In practice, its RθJA of 100 °C/W means it relies on PCB copper area (minimum 0.2" × 0.2" pads per terminal) for heat spreading; no external heatsink is used or required for transient suppression duty.
How does SMBJ7.5CAHE3_B/H differ from SMBJ7.5AHE3_B/H?
SMBJ7.5CAHE3_B/H is bidirectional (CA), while SMBJ7.5AHE3_B/H is unidirectional (A). The "CA" version clamps equally for positive and negative transients and has no polarity marking; the "A" version has a cathode band and conducts only in reverse bias, requiring correct orientation in-circuit - a critical distinction affecting layout and protection coverage.
SMBJ7.5CAHE3_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:
- -
- Bidirectional Channels:
- 1
- 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)
SMBJ7.5CAHE3_B/H FAQ
1.How can I place an order for SMBJ7.5CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.5CAHE3_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 SMBJ7.5CAHE3_B/H reliable?
The price and inventory of SMBJ7.5CAHE3_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 SMBJ7.5CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ7.5CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.5CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.5CAHE3_B/H?
SMBJ7.5CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.5CAHE3_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 SMBJ7.5CAHE3_B/H?
For technical support, including SMBJ7.5CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.5CAHE3_B/H requirements.
6.How does Aetrix verify that SMBJ7.5CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ7.5CAHE3_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 SMBJ7.5CAHE3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ7.5CAHE3_B/H?
All SMBJ7.5CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.5CAHE3_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 SMBJ7.5CAHE3_B/H part is unused and in its original packaging.
Return procedure for SMBJ7.5CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.5CAHE3_B/H Tags
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