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Vishay General Semiconductor - Diodes Division SMBG7.5CAHE3/52
- Part No.:
- SMBG7.5CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG7.5CAHE3/52.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,875
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Product details
Overview
SMBG7.5CAHE3/52 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 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 1.0 mA test current, 12.9 V maximum clamping voltage (VC) at 46.5 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 SMBG7.5CAHE3/52 datasheet, SMBG7.5CAHE3/52 pinout, SMBG7.5CAHE3/52 application, or SMBG7.5CAHE3/52 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.55), 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 shunt protector: under normal conditions it presents high impedance (>1 MΩ leakage at VWM), then rapidly avalanches into low-impedance conduction when transient voltage exceeds VBR. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
Designed for bidirectional protection, SMBG7.5CAHE3/52 has symmetrical electrical characteristics in both polarities - no polarity marking on package - and meets JESD201 Class 2 whisker resistance and MSL Level 1 (260 °C reflow peak). Thermal resistance is 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead) under specified mounting conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum continuous reverse operating voltage before clamping begins; defines safe signal swing margin for protected line |
| VBR (min/max) | 8.33 V / 9.21 V at 1.0 mA - guaranteed avalanche onset range; ensures consistent turn-on across production lots |
| VC @ IPPM | 12.9 V at 46.5 A - clamping voltage during 10/1000 μs surge; limits downstream IC stress to safe level |
| PPPM | 600 W - peak pulse power handling capacity; supports automotive ISO 7637-2 Pulse 1/2/5a compliance |
| IPPM | 46.5 A - maximum non-repetitive surge current; derived from 10/1000 μs waveform with 0.01% duty cycle |
| TJ Range | −55 °C to +150 °C - extended junction temperature range enables use in engine bay or industrial enclosures |
| Qualification | AEC-Q101 qualified - validated for automotive-grade reliability including HTOL, TCT, and ESD HBM ≥ 8 kV |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, bidirectional configuration with no polarity marking. Case dimensions: 4.57 mm × 3.94 mm × 2.10 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional terminal pair | No functional distinction - either terminal serves as anode or cathode depending on transient polarity; enables single-device protection of AC or differential lines |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Supports robust protection against ISO 7637-2 Pulse 5a (load dump) up to 120 V/100 ms in 12 V systems |
| AEC-Q101 qualification | Validated for automotive under-hood applications including temperature cycling, humidity bias, and mechanical shock |
| Glass passivated junction | Ensures stable VBR tolerance and low parameter drift over 15+ year service life in industrial environments |
| MSL Level 1 rating | Enables standard SMT reflow without pre-baking; compatible with high-volume automated assembly at 260 °C peak |
| Low clamping ratio (VC/VBR) | ~1.55 - minimizes overvoltage stress on protected ICs while maintaining fast response (<1 ns typical) |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from ESD and switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt clamping TVS placed directly at connector entry point to divert surge energy before reaching ASIC input pins. Use Value: Limits transient voltage to ≤12.9 V during 46.5 A surges, preventing latch-up or gate oxide damage in 5 V-tolerant sensor interface ICs. |
Use Scenario: Safeguarding PLC digital input modules against induced surges from relay coil flyback or nearby motor drives. IC Role / Device Role / Timing Role: Bidirectional clamp on 24 V DC input lines, absorbing repetitive 10/1000 μs transients up to 600 W without degradation. Use Value: Maintains system uptime by eliminating false triggering or component failure due to >1 kV transients on field wiring. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Protecting RS-485 transceiver inputs in base station backhaul equipment exposed to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary-level TVS on differential pair, working in coordination with GDT or MOV secondary protection stages. Use Value: Clamps common-mode transients to <13 V within nanoseconds, preserving signal integrity and meeting IEC 61000-4-5 Level 3 (2 kV) |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Parallel-mounted across motor terminals to clamp inductive kickback before it couples into MCU power rails. Use Value: Prevents brownouts and resets in 3.3 V microcontrollers by limiting rail disturbance to <150 mV during 100 A flyback events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5CA | Same VWM (7.5 V) and VC (12.9 V), but lower PPPM = 600 W (same rating) and higher IPPM = 46.5 A; identical SMB (DO-214AA) footprint but 0.1 mm taller case | Not AEC-Q101 qualified; intended for commercial/industrial use only | Select SMBJ7.5CA only if automotive qualification is not required and board space allows minor height increase |
| 1.5KE7.5CA | Higher PPPM = 1500 W, larger DO-201AD package (5.3 mm × 5.3 mm), VC = 12.9 V at 114 A; slower thermal response due to higher RθJA | Through-hole mounting; unsuitable for high-density SMT layouts or automated placement | Choose 1.5KE7.5CA only for legacy through-hole designs requiring higher single-pulse energy absorption |
Compared with SMBG7.5CAHE3/52, SMBJ7.5CA offers identical electrical performance but lacks automotive qualification and uses a slightly taller package, while 1.5KE7.5CA trades SMT compatibility and thermal responsiveness for higher pulse energy handling in through-hole form.
Availability
SMBG7.5CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O conditioning, and telecom line interface applications requiring stable component supply, AEC-Q101 compliance, and high-volume SMT manufacturability.
Supply support for SMBG7.5CAHE3/52 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, precision, and automotive-grade validation.
The SMBG series was developed specifically for high-reliability surface-mount transient suppression in space-constrained automotive and industrial systems, prioritizing low clamping voltage, fast response, and AEC-Q101 qualification.
FAQ
What is the clamping voltage of SMBG7.5CAHE3/52 and how is it measured?
The SMBG7.5CAHE3/52 has a maximum clamping voltage (VC) of 12.9 V, measured at its rated peak pulse current (IPPM) of 46.5 A using a standardized 10/1000 μs double-exponential surge waveform. This value reflects worst-case voltage seen by downstream circuitry during transient events and is guaranteed across temperature and lifetime per Vishay's AEC-Q101 test plan.
Is SMBG7.5CAHE3/52 suitable for automotive applications?
Yes, SMBG7.5CAHE3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its −55 °C to +150 °C operating junction temperature range, MSL Level 1 reflow compatibility, and validation for HTOL, temperature cycling, and ESD (HBM ≥ 8 kV) make it appropriate for ECU, ADAS sensor, and body control module protection.
Does SMBG7.5CAHE3/52 have polarity markings on the package?
No, SMBG7.5CAHE3/52 is a bidirectional TVS diode and carries no polarity marking. The SMBG (DO-215AA) case is symmetric, with identical electrical behavior in both directions - enabling use on AC-coupled lines, differential pairs, or any application where voltage transients may occur with either polarity.
What is the thermal resistance of SMBG7.5CAHE3/52 and how does it affect layout?
SMBG7.5CAHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe operation under repetitive surges, PCB layout must provide adequate copper area and avoid thermal bottlenecks - insufficient copper increases junction temperature and reduces surge endurance.
How does the glass passivation in SMBG7.5CAHE3/52 improve long-term reliability?
The glass passivated chip junction in SMBG7.5CAHE3/52 prevents moisture ingress and metallization migration at elevated temperatures, ensuring stable breakdown voltage (VBR) and low leakage over time. This construction is critical for automotive and industrial deployments where field life exceeds 10 years and thermal cycling exceeds 1000 cycles.
SMBG7.5CAHE3/52 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):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 46.5A
- 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)
SMBG7.5CAHE3/52 FAQ
1.How can I place an order for SMBG7.5CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG7.5CAHE3/52 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 SMBG7.5CAHE3/52 reliable?
The price and inventory of SMBG7.5CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG7.5CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG7.5CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG7.5CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG7.5CAHE3/52?
SMBG7.5CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG7.5CAHE3/52 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 SMBG7.5CAHE3/52?
For technical support, including SMBG7.5CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG7.5CAHE3/52 requirements.
6.How does Aetrix verify that SMBG7.5CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG7.5CAHE3/52 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 SMBG7.5CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG7.5CAHE3/52?
All SMBG7.5CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG7.5CAHE3/52, 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 SMBG7.5CAHE3/52 part is unused and in its original packaging.
Return procedure for SMBG7.5CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG7.5CAHE3/52 Tags
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