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Vishay General Semiconductor - Diodes Division SMBJ75CAHM3/H
- Part No.:
- SMBJ75CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ75CAHM3/H.pdf
- Description:
- TVS DIODE 75VWM 121VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,386
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Product details
Overview
SMBJ75CAHM3/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 - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ75CAHM3/H datasheet, SMBJ75CAHM3/H pinout, SMBJ75CAHM3/H application, or SMBJ75CAHM3/H equivalent, this device is selected for robust ESD and surge protection where bidirectional clamping, low leakage (<1.0 µA at VWM), and AEC-Q101 qualification (via HM3 suffix) are required in automotive and industrial control systems.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance in forward and reverse directions. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1.0 ns), while the low incremental surge resistance supports effective energy diversion during transient events.
The device is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its halogen-free, RoHS-compliant construction (HM3 suffix) and matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards.
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 mA - guaranteed conduction onset range; ensures reliable triggering above normal operating voltage |
| 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 - maximum transient energy absorption capability under standard 10/1000 µs waveform; enables IEC 61000-4-5 Level 4 compliance |
| ID (Reverse Leakage) | ≤1.0 µA at 75 V - minimal standby power loss and signal integrity impact in high-impedance circuits |
| TJ max. | 150 °C - allows operation in under-hood automotive and industrial environments without thermal derating penalties |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with automated pick-and-place |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Case dimensions: 5.59 mm × 4.06 mm × 2.20 mm (L × W × H); terminals are matte tin-plated for lead-free soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Terminal 1) | Current entry point in forward bias; symmetrical with cathode in bidirectional mode | Enables clamping during positive- and negative-going transients without external polarity orientation |
| Cathode (Terminal 2) | Current exit point in forward bias; electrically identical to anode for bidirectional operation | Eliminates need for orientation-aware PCB layout; simplifies design for AC-coupled or floating signal lines |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC in both directions - protects AC lines, differential buses, and ungrounded sensors without polarity constraints |
| 600 W peak pulse power | Handles 10/1000 µs surges up to 5.0 A - meets IEC 61000-4-5 surge immunity requirements for industrial equipment |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain and body electronics - supports extended temperature cycling and humidity testing |
| Halogen-free & RoHS-compliant | Meets JEDEC J-STD-20 and JESD201 Class 2 whisker resistance - ensures long-term reliability in lead-free assembly processes |
| Low clamping ratio (VC/VWM = 1.61) | Minimizes overvoltage stress on protected ICs - critical for 75 V-rated DC-DC controllers and gate drivers |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of half-bridge gate driver inputs against inductive kickback from solenoid and relay coils. IC Role / Device Role / Timing Role: Bidirectional TVS placed across driver supply rails to clamp ±100 V transients within 1 ns. Use Value: Prevents latch-up or oxide damage in 75 V-rated gate drivers by limiting rail voltage to ≤121 V during 600 W surge events. |
Use Scenario: Surge suppression on LIN bus lines exposed to load dump and battery reversal in door module ECUs. IC Role / Device Role / Timing Role: Standoff at 75 V with sub-µA leakage preserves bus idle state; clamps bidirectional faults to protect transceiver I/O. Use Value: Enables AEC-Q101-compliant LIN interface operation without additional series impedance or timing delay. |
| Telecom Power Supply Inputs | Industrial Sensor Signal Conditioning |
|
Use Scenario: Input-stage protection for 48 V telecom rectifiers subjected to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary clamping element upstream of DC-DC converters; absorbs 600 W pulses without degradation. Use Value: Maintains system uptime by preventing converter shutdown or MOSFET failure during repeated 10/1000 µs transients. |
Use Scenario: Protection of analog front-end inputs (e.g., 4–20 mA loop receivers) against ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 µA) bidirectional clamp preserving signal accuracy while diverting >8 kV HBM ESD. Use Value: Eliminates need for separate positive/negative TVS devices - reduces BOM count and PCB area in space-constrained modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CAHE3/H | RoHS-compliant but not halogen-free; lacks JESD201 Class 2 whisker resistance certification | Suitable for commercial-grade industrial controls where halogen-free requirement is absent | Select when cost sensitivity outweighs automotive or high-reliability process requirements |
| SMAJ75CAHM3 | Lower PPPM (400 W vs. 600 W); SMA package (smaller footprint, higher thermal resistance) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or automotive load dump | Choose only for space-constrained consumer applications with <400 W surge exposure |
Compared with SMBJ75CAHE3/H and SMAJ75CAHM3, SMBJ75CAHM3/H delivers superior surge handling (600 W), halogen-free compliance, and AEC-Q101 qualification - making it the preferred choice for automotive body electronics and industrial power systems requiring long-term reliability under repetitive surge stress.
Availability
SMBJ75CAHM3/H is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supply inputs requiring stable component supply, long-lifecycle support, and traceable sourcing for production programs.
Supply support for SMBJ75CAHM3/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 was developed for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of SMBJ75CAHM3/H at its rated peak pulse current?
The SMBJ75CAHM3/H has a maximum clamping voltage (VC) of 121 V at 5.0 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring compatibility with 75 V-rated downstream components such as gate drivers and DC-DC controllers.
Is SMBJ75CAHM3/H suitable for automotive applications?
Yes, SMBJ75CAHM3/H is AEC-Q101 qualified (indicated by the HM3 suffix) and specifically validated for automotive use cases including body control modules, lighting systems, and LIN/CAN node protection. Its halogen-free, RoHS-compliant construction, MSL Level 1 rating, and 150 °C junction temperature capability meet stringent automotive reliability and assembly requirements.
How does the bidirectional configuration of SMBJ75CAHM3/H affect PCB layout?
The bidirectional configuration of SMBJ75CAHM3/H eliminates polarity marking - there is no cathode band or orientation requirement on the SMB (DO-214AA) package. This allows placement in either direction on AC-coupled lines, differential buses, or floating sensor interfaces, reducing layout complexity and eliminating risk of reverse installation during automated assembly.
What is the maximum reverse leakage current for SMBJ75CAHM3/H at its stand-off voltage?
The SMBJ75CAHM3/H exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 75 V stand-off voltage (VWM) and 25 °C ambient temperature. This ultra-low leakage preserves signal integrity in high-impedance sensor interfaces and minimizes standby power loss in always-on automotive modules - confirmed per electrical characteristics table in Vishay document 88392.
Does SMBJ75CAHM3/H meet IEC 61000-4-5 surge immunity standards?
Yes, SMBJ75CAHM3/H supports compliance with IEC 61000-4-5 (surge immunity) up to Level 4 (4 kV line-to-line, 2 kV line-to-ground) when applied with appropriate PCB layout - including minimum 5.0 mm × 5.0 mm copper pads per terminal as specified in the Vishay datasheet. Its 600 W peak pulse power rating and 121 V clamping voltage enable effective energy diversion during standardized 10/1000 µs surge waveforms.
SMBJ75CAHM3/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:
- Discontinued at Digi-Key
- 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/H FAQ
1.How can I place an order for SMBJ75CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ75CAHM3/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 SMBJ75CAHM3/H reliable?
The price and inventory of SMBJ75CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ75CAHM3/H is usually 5 days.
3.What payment methods are accepted for SMBJ75CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ75CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ75CAHM3/H?
SMBJ75CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ75CAHM3/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 SMBJ75CAHM3/H?
For technical support, including SMBJ75CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ75CAHM3/H requirements.
6.How does Aetrix verify that SMBJ75CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ75CAHM3/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 SMBJ75CAHM3/H meets industry standards.
7.What is the process for return or replacement of SMBJ75CAHM3/H?
All SMBJ75CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ75CAHM3/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 SMBJ75CAHM3/H part is unused and in its original packaging.
Return procedure for SMBJ75CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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