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Vishay General Semiconductor - Diodes Division SMBJ75CAHE3/52
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- Part No.:
- SMBJ75CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ75CAHE3/52.pdf
- Description:
- TVS DIODE 75VWM 121VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,479
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Product details
Overview
SMBJ75CAHE3/52 from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in the 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 capability with a 10/1000 µs waveform - deployed in industrial sensor interfaces and telecom power rails.
For engineers reviewing the SMBJ75CAHE3/52 datasheet, SMBJ75CAHE3/52 pinout, SMBJ75CAHE3/52 application, or SMBJ75CAHE3/52 equivalent, key selection criteria include bidirectional surge protection capability, AEC-Q101 qualification status, clamping performance under repetitive 10/1000 µs surges, thermal resistance (RθJA = 100 °C/W), and RoHS-compliant matte tin-plated terminals compatible with J-STD-002 soldering standards.
Technical Context
This device operates as a voltage-clamping protector using an avalanche junction structure, responding in <1 ps to transient overvoltages. Its bidirectional symmetry enables suppression of both positive and negative polarity surges without polarity-sensitive placement, and its glass-passivated chip junction ensures stable leakage and long-term reliability under repeated stress.
Designed for surface-mount assembly on 0.2" × 0.2" copper pads per terminal, it delivers 600 W peak pulse power with 0.01% duty cycle and derates linearly above 25 °C ambient per Fig. 2. The 150 °C maximum junction temperature and MSL Level 1 rating support reflow compatibility up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working margin. |
| VBR min/max | 83.3 V / 92.1 V at 1 mA - Breakdown threshold range; ensures consistent turn-on across production lots. |
| VC @ IPPM | 121 V at 5.0 A - Clamped voltage during 10/1000 µs surge; determines protected circuit's maximum transient exposure. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; supports IEC 61000-4-5 Level 4 surge immunity. |
| ID @ VWM | 1.0 µA - Reverse leakage at rated stand-off; negligible power loss in standby, critical for low-power sensor nodes. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or industrial enclosures. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard PCB pad layout; informs heatsinking requirements. |
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); matte tin-plated leads, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Accepts reverse surge current during negative excursions; symmetrical with cathode for bidirectional conduction. |
| Cathode | Transient current entry (positive polarity) | Accepts forward surge current during positive excursions; identical electrical behavior to anode due to bidirectional design. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines or differential signals without external polarity management. |
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics where reliability under thermal cycling and vibration is mandatory. |
| 600 W 10/1000 µs rating | Meets IEC 61000-4-5 surge immunity requirements for industrial and telecom infrastructure equipment. |
| MSL Level 1, 260 °C peak | Supports standard lead-free reflow profiles without moisture-induced damage or delamination. |
| Glass passivated junction | Reduces parameter drift over time and improves stability under high-humidity or high-temperature storage conditions. |
Applications
| Industrial Sensor Interface | Telecom Power Rail Protection |
|---|---|
|
Use Scenario: Protecting 24 V DC supply inputs of PLC analog input modules from inductive switching transients and EFT bursts. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed directly at connector entry point to shunt surge energy before reaching LDOs and ADC front-ends. Use Value: Limits rail voltage to ≤121 V during 5 A surges, preventing latch-up or permanent damage to downstream 3.3 V logic. |
Use Scenario: Safeguarding -48 V DC telecom rectifier outputs against lightning-induced surges on distribution backplanes. IC Role / Device Role / Timing Role: Bidirectional clamp absorbing both positive and negative polarity transients on shared power bus lines. Use Value: Maintains system uptime by surviving repetitive 600 W surges without degradation, verified per Telcordia GR-1089-CORE. |
| Automotive Body Control Module | Consumer Appliance Motor Drive |
|
Use Scenario: Suppressing load-dump and jump-start transients on 12 V CAN/LIN bus power domains in BCMs. IC Role / Device Role / Timing Role: AEC-Q101-qualified TVS mounted adjacent to power entry filter, clamping within nanoseconds. Use Value: Prevents false resets and communication errors by holding microcontroller supply within 121 V clamping limit during ISO 16750-2 pulses. |
Use Scenario: Shielding BLDC motor driver ICs from commutation spikes generated by brushed universal motors in washing machines. IC Role / Device Role / Timing Role: Low-inductance SMB package placed at motor terminal interface to minimize voltage overshoot propagation. Use Value: Extends driver IC lifetime by limiting transient voltage stress to 121 V, reducing gate oxide wear and ESD failure modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA-M3/52 | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification. | No difference in surge protection performance or thermal behavior; differs only in material composition. | Select when halogen-free compliance is mandated by OEM environmental policy or regional regulations. |
| SMCJ75CAHE3/52 | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package; higher RθJA (50 °C/W) and 1500 W PPPM rating. | Requires larger PCB footprint; suited for higher-energy surge environments where 600 W is insufficient. | Choose when system-level surge testing exceeds IEC 61000-4-5 Level 4 and board space allows SMC footprint. |
Compared with SMBJ75CAHE3/52, SMBJ75CA-M3/52 offers identical protection performance with halogen-free materials, while SMCJ75CAHE3/52 trades compactness for higher 1500 W surge capacity - making SMBJ75CAHE3/52 optimal for space-constrained, AEC-Q101-compliant 600 W applications.
Availability
SMBJ75CAHE3/52 is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom power rail protection, and automotive body control modules requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ75CAHE3/52 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 is engineered for robust transient suppression in harsh environments - targeting industrial automation, automotive electronics, and telecom infrastructure where repeatable clamping and AEC-Q101 validation are essential.
FAQ
What is the clamping voltage of SMBJ75CAHE3/52 under a 10/1000 µs surge?
The SMBJ75CAHE3/52 has a maximum clamping voltage (VC) of 121 V at 5.0 A peak pulse current with a 10/1000 µs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads) and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ75CAHE3/52 maintains this clamping performance across its specified operating temperature range.
Is SMBJ75CAHE3/52 qualified for automotive use?
Yes, SMBJ75CAHE3/52 is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3", which denotes RoHS-compliant and AEC-Q101-qualified variants. This qualification covers stress tests including temperature cycling, humidity bias, and mechanical shock - validating its suitability for automotive body electronics, infotainment power supplies, and CAN/LIN bus protection. The SMBJ75CAHE3/52 meets these requirements without derating.
How does the bidirectional design of SMBJ75CAHE3/52 affect PCB layout?
The SMBJ75CAHE3/52 has no polarity marking and functions identically in both directions, eliminating orientation constraints during automated placement. This simplifies PCB layout by removing the need for silkscreen polarity indicators or directional routing - especially beneficial in differential signal paths or AC-coupled interfaces. The SMBJ75CAHE3/52's symmetric behavior ensures consistent clamping regardless of surge polarity, reducing design iteration cycles.
What is the thermal resistance of SMBJ75CAHE3/52, and how does it impact power dissipation?
The SMBJ75CAHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the recommended 0.2" × 0.2" copper pads per terminal. At its 5.0 W steady-state power dissipation rating, this results in a 500 °C temperature rise - but since the device is intended for transient (not continuous) operation, thermal design focuses on pulse energy absorption. The SMBJ75CAHE3/52 relies on short-duration surge handling rather than sustained thermal management.
Can SMBJ75CAHE3/52 replace unidirectional TVS diodes in existing designs?
No - SMBJ75CAHE3/52 is strictly bidirectional and cannot substitute for unidirectional TVS diodes in DC-only applications where forward conduction must be blocked. Unidirectional parts like SMBJ75AHE3/52 have a defined cathode band and conduct only in reverse bias; replacing them with SMBJ75CAHE3/52 would allow unintended forward current flow during normal operation. The SMBJ75CAHE3/52 is appropriate only where bidirectional surge suppression is explicitly required.
SMBJ75CAHE3/52 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ75CAHE3/52 FAQ
1.How can I place an order for SMBJ75CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ75CAHE3/52 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 SMBJ75CAHE3/52 reliable?
The price and inventory of SMBJ75CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ75CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ75CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ75CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ75CAHE3/52?
SMBJ75CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ75CAHE3/52 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 SMBJ75CAHE3/52?
For technical support, including SMBJ75CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ75CAHE3/52 requirements.
6.How does Aetrix verify that SMBJ75CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ75CAHE3/52 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 SMBJ75CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ75CAHE3/52?
All SMBJ75CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ75CAHE3/52, 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 SMBJ75CAHE3/52 part is unused and in its original packaging.
Return procedure for SMBJ75CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ75CAHE3/52 Tags
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