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Vishay General Semiconductor - Diodes Division SMBG75CAHE3/52
- Part No.:
- SMBG75CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG75CAHE3/52.pdf
- Description:
- TVS DIODE 75VWM 121VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,173
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Product details
Overview
SMBG75CAHE3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for clamping voltage transients on signal or power 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 automotive sensor interfaces and industrial I/O circuits against ESD and load dump.
For engineers reviewing the SMBG75CAHE3/52 datasheet, SMBG75CAHE3/52 pinout, SMBG75CAHE3/52 application, or SMBG75CAHE3/52 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.34), junction temperature range (–55 °C to +150 °C), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped surge protector with symmetrical avalanche breakdown in both polarities, enabling protection of AC-coupled or floating signal paths without polarity constraints. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ps typical), while the low incremental surge resistance supports consistent clamping under repetitive 0.01% duty cycle surges.
The SMBG75CAHE3/52 is rated for 600 W peak pulse power per 10/1000 μs waveform, derated linearly above 25 °C ambient using a 100 °C/W junction-to-ambient thermal resistance. It meets J-STD-020 MSL Level 1 and is qualified to AEC-Q101 for automotive under-hood and chassis applications requiring robust transient immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 83.3 V / 92.1 V at 1 mA - guaranteed avalanche onset range defining minimum system overvoltage threshold |
| VC @ IPPM | 121 V at 5.0 A - clamped voltage during 10/1000 μs surge, limiting downstream stress |
| PPPM | 600 W - peak transient energy absorption capacity under standardized surge waveform |
| ID @ VWM | ≤1.0 μA - ultra-low leakage preserves signal integrity in high-impedance sensor lines |
| TJ max | +150 °C - enables operation in under-hood automotive environments and industrial enclosures |
| MSL Level | Level 1 (260 °C peak reflow) - supports standard lead-free SMT assembly without preconditioning |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount gull-wing, RoHS-compliant matte tin-plated leads, AEC-Q101 qualified, no polarity marking (bidirectional).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; clamping node in negative transients | Connected to protected line; symmetrical with cathode for bidirectional operation |
| Cathode | Current exit terminal in forward bias; clamping node in positive transients | Connected to protected line; functionally identical to anode due to bidirectional design |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., CAN, RS-485), and floating sensors without polarity concerns |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules, ADAS sensor interfaces, and body electronics |
| 600 W 10/1000 μs rating | Withstands ISO 7637-2 Pulse 1 (inductive switch-off) and IEC 61000-4-5 Combination Wave surges up to 4 kV |
| Low clamping ratio (VC/VBR ≈ 1.34) | Minimizes voltage overshoot during surge events, reducing risk of latch-up or gate oxide damage in protected ICs |
| MSL Level 1 compliance | Eliminates floor-life management and baking requirements during PCB assembly |
Applications
| Automotive Sensor Protection | Industrial I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine control units exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Voltage clamping element placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤121 V, preventing ADC saturation and preserving measurement accuracy during 12 V system faults. | Use Scenario: Shielding 24 V PLC digital input channels from inductive kickback caused by relay or solenoid switching. IC Role / Device Role / Timing Role: Primary surge suppression device mounted at connector interface before optocoupler or level-shifter. Use Value: Absorbs 600 W surge energy within 1000 μs, maintaining logic-level integrity and avoiding false triggering of input latches. |
| Automotive CAN Bus Protection | Consumer Appliance Motor Control |
Use Scenario: Safeguarding high-speed CAN FD transceivers (e.g., TJA1044) against ESD and coupled transients on vehicle wiring harnesses. IC Role / Device Role / Timing Role: Bidirectional TVS placed across CANH–CANL differential pair near connector. Use Value: Symmetrical clamping ensures equal protection of both lines, preserving common-mode rejection and bit error rate below 10⁻¹². | Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines or HVAC blowers connected to MCU GPIOs. IC Role / Device Role / Timing Role: Clamp device installed between motor driver output and microcontroller feedback pin. Use Value: Prevents voltage excursions beyond 121 V from damaging 3.3 V or 5 V MCU inputs during motor stall or direction reversal. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA-E3/52 | Same VWM (75 V), same SMB package, but lower PPPM (600 W vs. SMBJ's 600 W - identical rating), slightly higher VC (124 V vs. 121 V) | Identical use cases; minor clamping voltage difference may affect margin in high-precision analog sensing | Select SMBG75CAHE3/52 when AEC-Q101 qualification is mandatory; SMBJ75CA-E3/52 suffices for industrial-only designs |
| SMCJ75CAHE3_A/H | Higher power rating (1500 W), larger SMC (DO-214AB) package, same VWM and VBR range | Used where higher surge repetition or longer duration transients (e.g., ISO 16750-2) require greater energy handling | Choose SMBG75CAHE3/52 for space-constrained PCBs; SMCJ75CAHE3_A/H where board area allows and surge severity exceeds 600 W |
Compared with SMBJ75CA-E3/52 and SMCJ75CAHE3_A/H, the SMBG75CAHE3/52 offers optimal balance of AEC-Q101 compliance, compact SMBG footprint, and precise 121 V clamping - making it preferred for automotive sensor nodes and dense industrial modules where layout area and qualification rigor are critical.
Availability
SMBG75CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and CAN bus safeguarding requiring stable component supply and long-term lifecycle assurance.
Supply support for SMBG75CAHE3/52 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, automotive qualification, and high-volume manufacturability.
The SMBG series was developed specifically for AEC-Q101-compliant transient suppression in space-constrained automotive and industrial systems, prioritizing low-profile packaging, repeatable clamping, and robust surge endurance.
FAQ
What is the clamping voltage of SMBG75CAHE3/52 under a 10/1000 μs surge?
The SMBG75CAHE3/52 has a maximum clamping voltage (VC) of 121 V at 5.0 A peak pulse current under the standardized 10/1000 μs waveform. This value is measured per Figure 1 in Vishay Document 88456 and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is SMBG75CAHE3/52 suitable for automotive applications?
Yes, SMBG75CAHE3/52 is AEC-Q101 qualified and explicitly rated for automotive use per Vishay's ordering information and mechanical data tables. Its MSL Level 1 rating, –55 °C to +150 °C operating range, and bidirectional clamping make it appropriate for engine control units, ADAS sensor interfaces, and body electronics where reliability under harsh thermal and electrical conditions is required.
How does the SMBG75CAHE3/52 differ from unidirectional variants like SMBG75AHE3/52?
The SMBG75CAHE3/52 is bidirectional, meaning it clamps voltage transients of either polarity symmetrically across its terminals, with no cathode band marking. In contrast, SMBG75AHE3/52 is unidirectional, featuring a cathode band and conducting only in reverse bias - suitable for DC-biased lines. The "CA" suffix denotes bidirectional functionality, confirmed in Vishay's primary characteristics table and device marking code section.
What is the maximum reverse leakage current for SMBG75CAHE3/52 at its stand-off voltage?
At its 75 V stand-off voltage (VWM), the SMBG75CAHE3/52 exhibits a maximum reverse leakage current (ID) of 1.0 μA at 25 °C, as specified in the Electrical Characteristics table on page 2 of Vishay Document 88456. This ultra-low leakage ensures minimal loading on high-impedance sensor outputs and preserves signal fidelity in precision analog monitoring circuits.
Does SMBG75CAHE3/52 require special PCB layout considerations?
Yes - Vishay specifies mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 600 W pulse power dissipation. Smaller pads reduce thermal mass and cause premature failure under surge. Additionally, minimize trace inductance between the SMBG75CAHE3/52 and protected node, and avoid routing sensitive signals near its terminals to prevent coupling during clamping events.
SMBG75CAHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AA, SMB Gull Wing
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG75CAHE3/52 FAQ
1.How can I place an order for SMBG75CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG75CAHE3/52 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 SMBG75CAHE3/52 reliable?
The price and inventory of SMBG75CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG75CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG75CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG75CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG75CAHE3/52?
SMBG75CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG75CAHE3/52 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 SMBG75CAHE3/52?
For technical support, including SMBG75CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG75CAHE3/52 requirements.
6.How does Aetrix verify that SMBG75CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG75CAHE3/52 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 SMBG75CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG75CAHE3/52?
All SMBG75CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG75CAHE3/52, 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 SMBG75CAHE3/52 part is unused and in its original packaging.
Return procedure for SMBG75CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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