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Vishay General Semiconductor - Diodes Division SMBJ75CAHM3_A/I
- Part No.:
- SMBJ75CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ75CAHM3_A/I.pdf
- Description:
- TVS DIODE 75VWM 121VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,706
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Product details
Overview
SMBJ75CAHM3_A/I 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 standoff 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 - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ75CAHM3_A/I datasheet, SMBJ75CAHM3_A/I pinout, SMBJ75CAHM3_A/I application, or SMBJ75CAHM3_A/I equivalent, this device is selected for robust ESD and surge protection in automotive-grade commercial systems where halogen-free, AEC-Q101-qualified TVS performance and MSL Level 1 reflow compatibility are required.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping behavior during positive and negative transients. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1.0 ns), while low incremental surge resistance supports effective energy diversion without thermal runaway.
The device is rated for 150 °C maximum junction temperature and derates linearly above 25 °C ambient, with thermal resistance of 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads. It meets UL 497B recognition and complies with JESD22-B102 solderability and JESD201 Class 2 whisker resistance standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR (min/max) | 83.3 V / 92.1 V at 1 mA - guaranteed breakdown threshold ensuring predictable turn-on during overvoltage events. |
| VC @ IPPM | 121 V at 5.0 A - clamping voltage under full-rated 600 W surge; limits stress on downstream components. |
| PPPM | 600 W - peak pulse power handling with 10/1000 µs waveform; validates suitability for IEC 61000-4-5 Level 3/4 surges. |
| ID @ VWM | <1.0 µA - ultra-low reverse leakage preserves signal integrity and minimizes standby power loss. |
| TJ max. | 150 °C - enables reliable operation in under-hood or enclosed industrial environments without forced cooling. |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with automated pick-and-place. |
Pinout & Package
Two-terminal bidirectional device in SMB (DO-214AA) package; no polarity marking. Cathode/anode terminals are functionally interchangeable due to symmetrical construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Connects to ground or common reference plane; completes low-impedance surge shunt path during either polarity event. |
| Cathode | Transient return path (bidirectional) | Functionally identical to Anode; no directional biasing - both terminals serve as symmetrical surge conduction paths. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 600 W peak pulse power | Handles high-energy transients per IEC 61000-4-5 (10/1000 µs) without degradation over 0.01% duty cycle. |
| Halogen-free & RoHS-compliant (HM3) | Fulfills environmental compliance requirements for automotive and industrial end-equipment without compromising surge rating. |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow assembly without moisture-induced damage or popcorn effect. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and microcontroller I/O against inductive kickback from relay coils and solenoid switching. IC Role / Device Role / Timing Role: Transient voltage suppressor placed across DC bus or signal line inputs to clamp spikes before they reach sensitive logic. Use Value: Limits voltage excursion to ≤121 V during 5 A surge, preventing latch-up or permanent damage to 3.3 V/5 V MCU GPIOs and level-shifters. |
Use Scenario: Surge suppression on LIN bus lines and power supply rails in door modules, seat controllers, and lighting ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS connected between LIN signal and chassis ground to absorb ESD and load-dump induced transients. Use Value: Maintains signal integrity under ISO 10605 ±30 kV contact discharge and ISO 7637-2 Pulse 1/2a/5a waveforms without requiring additional filtering. |
| Telecom Power Supplies | Consumer Sensor Interfaces |
Use Scenario: Input-stage protection for 48 V telecom rectifiers and PoE injectors exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary clamping device upstream of DC-DC converters and hot-swap controllers. Use Value: Absorbs up to 600 W transient energy while holding clamped voltage below 121 V, preserving converter MOSFETs and feedback networks. |
Use Scenario: ESD protection for analog outputs of MEMS accelerometers and temperature sensors in smart home hubs and wearables. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector interface to shunt human-body-model (HBM) discharges. Use Value: Delivers sub-1 µA leakage at 75 V, avoiding DC offset errors in precision analog front-ends while responding in <1 ns. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CAHE3_A/I | Same electrical specs, but RoHS-compliant without halogen-free certification; uses standard matte tin plating. | Lacks halogen-free qualification; suitable for non-automotive commercial designs where material restrictions are less stringent. | Select when halogen-free compliance is not mandated and cost optimization is prioritized. |
| SAC75CA | Same VWM/VC, but SOD-123FL package (smaller footprint, lower power: 400 W PPPM). | Lower surge rating limits use to low-energy interfaces (e.g., USB, I²C); not suitable for 600 W industrial surges. | Choose only for space-constrained consumer applications with verified <400 W threat levels. |
Compared with SMBJ75CAHM3_A/I, SMBJ75CAHE3_A/I offers identical protection performance without halogen-free assurance, while SAC75CA trades package size and surge capacity for compactness - making the HM3 variant the sole choice for AEC-Q101 + halogen-free + 600 W requirements.
Availability
SMBJ75CAHM3_A/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supplies requiring stable component supply with long-term lifecycle support.
Supply support for SMBJ75CAHM3_A/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 and application-specific validation.
The SMBJ series delivers standardized, high-power TVS protection optimized for automotive, industrial, and telecom systems where AEC-Q101 qualification, halogen-free materials, and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of SMBJ75CAHM3_A/I at its rated peak pulse current?
The SMBJ75CAHM3_A/I has a maximum clamping voltage (VC) of 121 V at 5.0 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value ensures downstream components see no more than 121 V during a full-rated 600 W transient event. The SMBJ75CAHM3_A/I maintains this clamping performance across its full operating temperature range and after repeated surge exposure per JEDEC standards.
Is SMBJ75CAHM3_A/I suitable for automotive applications?
Yes, SMBJ75CAHM3_A/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction validated for automotive use. It is specified for under-hood and cabin applications including body control modules, lighting ECUs, and sensor interfaces where reliability under thermal cycling and surge stress is critical. The SMBJ75CAHM3_A/I meets UL 497B recognition and supports reflow up to 260 °C per J-STD-020 MSL Level 1.
How does the bidirectional design of SMBJ75CAHM3_A/I affect its circuit placement?
The SMBJ75CAHM3_A/I has no polarity marking and functions identically in both directions, allowing direct placement across AC-coupled lines, differential buses (e.g., LIN, RS-485), or ungrounded power rails without orientation constraints. Unlike unidirectional TVS diodes, the SMBJ75CAHM3_A/I eliminates risk of incorrect installation and simplifies layout by removing the need for cathode alignment checks during assembly.
What is the maximum steady-state power dissipation for SMBJ75CAHM3_A/I?
The SMBJ75CAHM3_A/I has a maximum steady-state power dissipation (PD) of 5.0 W at 50 °C ambient temperature on an infinite heatsink. In typical PCB layouts with 0.2" × 0.2" copper pads per terminal, derating applies above 25 °C ambient per Figure 2 in the datasheet. The SMBJ75CAHM3_A/I is not intended for continuous power dissipation but for transient suppression; sustained DC power must remain well below 5.0 W to avoid thermal failure.
Does SMBJ75CAHM3_A/I meet any safety agency certifications?
Yes, SMBJ75CAHM3_A/I is Underwriters Laboratories (UL) recognized under file E136766 for both unidirectional and bidirectional transient protectors per UL 497B, covering telecommunications and industrial equipment applications. This certification confirms its suitability for use in safety-critical surge protection circuits where third-party validation of dielectric strength, flammability (UL 94 V-0), and surge endurance is required. The SMBJ75CAHM3_A/I achieves this while maintaining its AEC-Q101 and halogen-free qualifications.
SMBJ75CAHM3_A/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:
- Obsolete
- 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)
SMBJ75CAHM3_A/I FAQ
1.How can I place an order for SMBJ75CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ75CAHM3_A/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 SMBJ75CAHM3_A/I reliable?
The price and inventory of SMBJ75CAHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ75CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ75CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ75CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ75CAHM3_A/I?
SMBJ75CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ75CAHM3_A/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 SMBJ75CAHM3_A/I?
For technical support, including SMBJ75CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ75CAHM3_A/I requirements.
6.How does Aetrix verify that SMBJ75CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ75CAHM3_A/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 SMBJ75CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ75CAHM3_A/I?
All SMBJ75CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ75CAHM3_A/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 SMBJ75CAHM3_A/I part is unused and in its original packaging.
Return procedure for SMBJ75CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ75CAHM3_A/I Tags
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ESD9B5.0ST5G
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Diodes Incorporated
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