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Vishay General Semiconductor - Diodes Division SMBJ75CAHE3_B/H
- Part No.:
- SMBJ75CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ75CAHE3_B/H.pdf
- Description:
- 600W,75V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,190
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Product details
Overview
SMBJ75CAHE3_B/H from Vishay General Semiconductor is a bidirectional 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 75 V stand-off voltage (VWM), 83.3–92.1 V breakdown voltage (VBR) at 1 mA, 121 V maximum clamping voltage (VC) at 5.0 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in industrial sensor interfaces and telecom line protection.
For engineers reviewing the SMBJ75CAHE3_B/H datasheet, SMBJ75CAHE3_B/H pinout, SMBJ75CAHE3_B/H application, or SMBJ75CAHE3_B/H equivalent, this device is selected for robust ESD and surge immunity in bidirectional AC-coupled circuits, high-reliability automotive-grade designs (AEC-Q101 qualified), and space-constrained PCB layouts requiring MSL Level 1 moisture sensitivity compliance.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling protection of AC signal paths, differential buses, and floating power rails without polarity concerns. Its glass-passivated junction ensures stable VBR tolerance and low leakage (<1.0 µA at VWM), while the low incremental surge resistance supports consistent clamping under repetitive transient events.
The device is rated for 150 °C maximum junction temperature and exhibits a +0.106 %/°C temperature coefficient of VBR - critical for thermal stability in wide-temperature industrial environments. Its 100 °C/W junction-to-ambient thermal resistance requires appropriate copper pad area (0.2" × 0.2") to sustain 5.0 W steady-state dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 75 V - maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 83.3–92.1 V at 1.0 mA - guaranteed conduction onset range; ensures predictable turn-on during overvoltage events |
| VC (Clamping Voltage) | 121 V at 5.0 A IPPM - peak voltage seen by protected circuit during 10/1000 µs surge; determines stress on downstream components |
| PPPM (Peak Pulse Power) | 600 W - energy-handling capacity for standardized 10/1000 µs transient; validates suitability for IEC 61000-4-5 Level 3/4 surges |
| ID (Reverse Leakage) | ≤1.0 µA at 75 V - minimal standby power loss and signal integrity impact in high-impedance sensing nodes |
| TJ max. | 150 °C - enables operation in under-hood automotive or enclosed industrial enclosures without derating |
| AEC-Q101 Qualified | Yes - certified for automotive electronics per stress test requirements including HTOL, TC, HTRB, and UHAST |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking; matte tin-plated leads, MSL Level 1 compliant (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Identical terminals - bidirectional clamping allows connection across any two points in AC or floating node without orientation check |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validates robustness against lightning-induced surges and inductive switching spikes in industrial control systems |
| AEC-Q101 qualification (HE3 suffix) | Confirms reliability for automotive body electronics, infotainment power rails, and ADAS sensor interfaces |
| Low profile SMB package (DO-214AA) | Enables automated placement and fits 5.0 mm × 5.0 mm thermal pads for optimal heat dissipation in dense layouts |
| 1.0 µA max. reverse leakage at VWM | Preserves accuracy in precision analog front-ends and battery-powered sensor nodes with microamp-level sleep currents |
| MSL Level 1, 260 °C peak reflow | Eliminates pre-baking requirement and supports standard lead-free SMT assembly processes |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
|
Use Scenario: Protecting RS-485 transceivers and analog sensor outputs (e.g., pressure, temperature) from EFT and surge in factory automation PLCs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential signal pair or supply rail to limit transient overvoltage. Use Value: Prevents latch-up or damage to 3.3 V/5 V interface ICs during 4 kV contact ESD or 1 kV surge events per IEC 61000-4-4/5. |
Use Scenario: Safeguarding LIN bus transceivers and LED driver inputs in door modules and lighting control units. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected between LIN line and ground, absorbing load dump and ISO 7637-2 pulses. Use Value: Maintains communication integrity during 12 V system transients up to ±100 V, meeting automotive OEM EMC requirements. |
| Telecom Line Protection | Power Supply Input Stage |
|
Use Scenario: Shielding Ethernet PHY magnetics and PoE injectors from induced surges on outdoor cabling in security camera systems. IC Role / Device Role / Timing Role: Primary surge clamp on secondary-side DC lines (e.g., 48 V PoE output), coordinated with upstream GDT or MOV. Use Value: Limits clamped voltage to ≤121 V, ensuring downstream DC-DC converters survive 10/1000 µs 600 W surges without overvoltage shutdown. |
Use Scenario: Secondary-side overvoltage suppression on 24 V industrial SMPS outputs feeding PLC I/O cards. IC Role / Device Role / Timing Role: Fast-response TVS placed after output filter capacitor to clamp regulator failure or backfeed transients. Use Value: Responds in <1 ps to clamp 75 V nominal rails to 121 V within 100 ns, preventing damage to 30 V-rated MOSFETs and logic ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CAHM3_B/H | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification | Required where halogen-free material compliance is mandated (e.g., EU public infrastructure projects) | Select SMBJ75CAHM3_B/H when halogen-free construction is specified; otherwise SMBJ75CAHE3_B/H satisfies standard commercial and automotive use cases |
| SMAJ75CA-E3/52 | Lower 400 W PPPM rating, SMA (DO-214AC) package, same VWM/VBR/VC but higher RθJA (150 °C/W) | Suitable only for lower-energy transients or less thermally demanding layouts due to reduced power handling and inferior thermal performance | Choose SMAJ75CA-E3/52 only if board space is constrained to SMA footprint and surge threat level is limited to IEC 61000-4-2 Level 4 (±15 kV air) without 10/1000 µs surge exposure |
Compared with SMBJ75CAHE3_B/H, SMBJ75CAHM3_B/H offers identical protection performance with halogen-free materials, while SMAJ75CA-E3/52 trades 33 % lower surge power rating and poorer thermal dissipation for smaller footprint - making SMBJ75CAHE3_B/H the optimal choice for full-spec automotive and industrial surge immunity.
Availability
SMBJ75CAHE3_B/H is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body electronics, and telecom line protection requiring stable component supply, AEC-Q101 traceability, and long-term production continuity.
Supply support for SMBJ75CAHE3_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, 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 ESD, EFT, and lightning-induced surges is mission-critical.
FAQ
What does the "CA" suffix indicate in SMBJ75CAHE3_B/H?
The "CA" suffix denotes a bidirectional configuration, meaning SMBJ75CAHE3_B/H provides symmetrical clamping for both positive and negative transients - essential for protecting AC-coupled signals, differential buses like RS-485, or floating power domains where polarity is undefined. Unlike unidirectional "A" variants, it has no cathode band marking.
Is SMBJ75CAHE3_B/H suitable for automotive applications?
Yes - SMBJ75CAHE3_B/H carries the HE3 suffix, confirming AEC-Q101 qualification per stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing. It is approved for under-hood and cabin applications such as body control modules, lighting drivers, and sensor hubs.
What is the maximum clamping voltage of SMBJ75CAHE3_B/H and at what current is it specified?
The maximum clamping voltage (VC) of SMBJ75CAHE3_B/H is 121 V, measured at a peak pulse current (IPPM) of 5.0 A using the standardized 10/1000 µs waveform. This value defines the worst-case voltage imposed on protected circuitry during a surge event and is critical for ensuring downstream ICs remain within absolute maximum ratings.
How does the SMB (DO-214AA) package of SMBJ75CAHE3_B/H compare thermally to SMA (DO-214AC)?
SMBJ75CAHE3_B/H in SMB package delivers superior thermal performance versus SMA equivalents: its typical junction-to-ambient thermal resistance (RθJA) is 100 °C/W (vs. ~150 °C/W for SMA), enabled by larger copper pad area compatibility (0.2" × 0.2"). This allows SMBJ75CAHE3_B/H to sustain higher average power dissipation and maintain lower junction temperatures under repetitive surge conditions.
Does SMBJ75CAHE3_B/H require orientation during PCB placement?
No - SMBJ75CAHE3_B/H is a bidirectional TVS with symmetrical terminals and no polarity marking. It can be placed in either orientation across a protected node without affecting clamping behavior, simplifying automated assembly and eliminating orientation-related field failures common with unidirectional variants.
SMBJ75CAHE3_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):
- 75V
- Voltage - Breakdown (Min):
- 83.3V
- Voltage - Clamping (Max) @ Ipp:
- 121V
- Current - Peak Pulse (10/1000µs):
- 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)
SMBJ75CAHE3_B/H FAQ
1.How can I place an order for SMBJ75CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ75CAHE3_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 SMBJ75CAHE3_B/H reliable?
The price and inventory of SMBJ75CAHE3_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 SMBJ75CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ75CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ75CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ75CAHE3_B/H?
SMBJ75CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ75CAHE3_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 SMBJ75CAHE3_B/H?
For technical support, including SMBJ75CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ75CAHE3_B/H requirements.
6.How does Aetrix verify that SMBJ75CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ75CAHE3_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 SMBJ75CAHE3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ75CAHE3_B/H?
All SMBJ75CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ75CAHE3_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 SMBJ75CAHE3_B/H part is unused and in its original packaging.
Return procedure for SMBJ75CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ75CAHE3_B/H Tags
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