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Vishay General Semiconductor - Diodes Division SMBJ75CAHM3_A/H
- Part No.:
- SMBJ75CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ75CAHM3_A/H.pdf
- Description:
- TVS DIODE 75VWM 121VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,671
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Product details
Overview
SMBJ75CAHM3_A/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_A/H datasheet, SMBJ75CAHM3_A/H pinout, SMBJ75CAHM3_A/H application, or SMBJ75CAHM3_A/H equivalent, this device is selected for robust ESD and surge protection where bidirectional clamping, low leakage (<1.0 µA at VWM), AEC-Q101 qualification, and halogen-free RoHS compliance are required in automotive and industrial control systems.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance regardless of transient polarity. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while the low incremental surge resistance supports effective energy diversion during repetitive 10/1000 µs surges at 0.01% duty cycle.
The device is rated for TJ = −55 °C to +150 °C operation and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its thermal resistance (RθJA = 100 °C/W) and RθJL = 20 °C/W enable reliable power dissipation when mounted on 5.0 mm × 5.0 mm copper pads per datasheet layout guidance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - Maximum continuous reverse operating voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (min/max) | 83.3 V / 92.1 V at IT = 1 mA - Confirmed breakdown range ensuring predictable turn-on under transient stress. |
| VC @ IPPM | 121 V at 5.0 A - Clamped voltage seen by protected circuit during full-rated 600 W surge, limiting downstream stress. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; validates suitability for IEC 61000-4-5 Level 3/4 surge immunity. |
| ID @ VWM | <1.0 µA - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
| TJ max. | +150 °C - Enables use in under-hood automotive environments and thermally demanding industrial enclosures. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with automated placement. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration with no polarity marking; symmetrical terminals function as anode and cathode depending on applied voltage polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no band marking required. |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; enables symmetric clamping across AC or floating DC lines. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 surge testing up to 4 kV (line-to-ground) without degradation when properly mounted. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements for green manufacturing. |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free soldering without moisture sensitivity concerns or pre-bake requirement. |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V/5 V logic and automotive microcontrollers. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between power rail and ground to shunt surge energy away from LDOs and MCU inputs. Use Value: Withstands 600 W surges and maintains VC ≤ 121 V, preventing latch-up or damage to 3.3 V/5 V domain components downstream. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in PLC modules exposed to field wiring transients. IC Role / Device Role / Timing Role: Low-capacitance TVS placed differential across signal pair or common-mode to ground to suppress EFT and surge coupling. Use Value: Sub-1 µA leakage at 75 V ensures minimal impact on mV-level sensor accuracy; fast response prevents transient-induced ADC errors. |
| Telecom DC Power Input Protection | Consumer USB-C Port Surge Suppression |
|
Use Scenario: Securing −48 V telecom rectifier outputs against lightning-induced surges on central office equipment. IC Role / Device Role / Timing Role: Primary-stage TVS on input bus, coordinated with upstream fuses and secondary-stage polymer PTCs. Use Value: 121 V clamping limits stress on downstream DC/DC converters rated for 36–75 V input, extending MTBF under repeated surge events. |
Use Scenario: Adding robustness to USB-C receptacles in portable monitors and docking stations against hot-plug ESD and cable-borne surges. IC Role / Device Role / Timing Role: Bidirectional clamp across VBUS and GND, positioned after connector but before port controller and PD controller. Use Value: Halogen-free HM3 construction satisfies consumer brand sustainability mandates; AEC-Q101 grade provides margin for high-reliability consumer use. |
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_A/H | Same electrical specs, RoHS-compliant but not halogen-free; uses standard matte tin plating without whisker mitigation class 2. | Lacks AEC-Q101 qualification and halogen-free certification; suitable for commercial-grade industrial equipment only. | Select when cost sensitivity outweighs automotive qualification or halogen-free requirements. |
| SMAJ75CAHM3_A/H | Lower 400 W PPPM, same VWM/VBR; SMA (DO-214AC) package with smaller 4.5 mm × 2.7 mm footprint. | Reduced surge margin; limited to lower-energy threats (e.g., IEC 61000-4-2 ESD, not full IEC 61000-4-5). | Choose for space-constrained designs where 400 W rating suffices and PCB area is premium. |
Compared with SMBJ75CAHE3_A/H, the SMBJ75CAHM3_A/H adds halogen-free compliance and AEC-Q101 qualification without sacrificing clamping performance; versus SMAJ75CAHM3_A/H, it delivers 50% higher surge power handling in a slightly larger but more robust SMB package.
Availability
SMBJ75CAHM3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, telecom power supplies, and USB-C peripheral designs requiring stable component supply with long-term lifecycle support.
Supply support for SMBJ75CAHM3_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, and protection devices with emphasis on reliability and automotive-grade validation.
The SMBJ series was developed specifically for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where consistent clamping and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SMBJ75CAHM3_A/H at its rated peak pulse current?
The SMBJ75CAHM3_A/H has a maximum clamping voltage (VC) of 121 V at 5.0 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during full-rated surge events. The SMBJ75CAHM3_A/H maintains this clamping performance consistently across its operational temperature range.
Is SMBJ75CAHM3_A/H suitable for automotive applications?
Yes, SMBJ75CAHM3_A/H is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials - explicitly designated for automotive use via the "HM3" suffix. It is validated for under-hood and chassis-mounted applications including body control modules, infotainment power rails, and ADAS camera interfaces where sustained operation at +150 °C and resistance to repetitive surges are required. The SMBJ75CAHM3_A/H meets all stress test requirements defined in AEC-Q101 Rev D.
How does the bidirectional design of SMBJ75CAHM3_A/H affect its circuit placement?
The SMBJ75CAHM3_A/H has no polarity marking and functions identically in either orientation, making it ideal for AC-coupled lines, floating DC buses, or differential signal pairs where transient direction is unpredictable. Unlike unidirectional TVS diodes, it eliminates orientation errors during assembly and simplifies layout by removing the need for cathode alignment. This symmetry is intrinsic to the SMBJ75CAHM3_A/H's internal structure and confirmed in Vishay's electrical characteristics table for bidirectional devices.
What is the maximum reverse leakage current for SMBJ75CAHM3_A/H at its stand-off voltage?
The SMBJ75CAHM3_A/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 ensures minimal power loss and signal distortion in high-impedance monitoring circuits and battery-powered systems. Leakage remains within specification up to +125 °C, with typical values well below 500 nA at room temperature - a key parameter verified in the Vishay SMBJ5.0A–SMBJ188A datasheet revision 09-Jan-2024.
Does SMBJ75CAHM3_A/H require derating at elevated ambient temperatures?
Yes, SMBJ75CAHM3_A/H must be derated above 25 °C ambient per Figure 2 in the Vishay datasheet. Its peak pulse power capability decreases linearly: at 85 °C, PPPM is reduced to approximately 420 W (70% of 600 W); at 125 °C, it drops to ~240 W (40%). Derating is based on junction temperature limits (TJ ≤ 150 °C) and thermal resistance (RθJA = 100 °C/W). Proper PCB copper pad sizing (0.2" × 0.2") is essential to maintain SMBJ75CAHM3_A/H performance under thermal stress.
SMBJ75CAHM3_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:
- -
- 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/H FAQ
1.How can I place an order for SMBJ75CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ75CAHM3_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 SMBJ75CAHM3_A/H reliable?
The price and inventory of SMBJ75CAHM3_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 SMBJ75CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ75CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ75CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ75CAHM3_A/H?
SMBJ75CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ75CAHM3_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 SMBJ75CAHM3_A/H?
For technical support, including SMBJ75CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ75CAHM3_A/H requirements.
6.How does Aetrix verify that SMBJ75CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ75CAHM3_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 SMBJ75CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ75CAHM3_A/H?
All SMBJ75CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ75CAHM3_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 SMBJ75CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMBJ75CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ75CAHM3_A/H Tags
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