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Vishay General Semiconductor - Diodes Division SMBG7.5CAHE3/5B
- Part No.:
- SMBG7.5CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG7.5CAHE3/5B.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,008
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Product details
Overview
SMBG7.5CAHE3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for clamping ESD and surge transients on signal/power lines. It features 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 1.0 mA, 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, industrial I/O ports, and USB data lines.
For engineers reviewing the SMBG7.5CAHE3/5B datasheet, SMBG7.5CAHE3/5B pinout, SMBG7.5CAHE3/5B application, or SMBG7.5CAHE3/5B equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.55), MSL Level 1 moisture sensitivity, 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 bias it presents high impedance (<1.0 μA leakage at 7.5 V), but triggers into low-impedance conduction when transient voltage exceeds its symmetric breakdown threshold in either polarity. Its glass-passivated junction ensures stable VBR tolerance and low dynamic resistance during surge events.
Designed for repetitive surge suppression with 0.01% duty cycle, SMBG7.5CAHE3/5B sustains 600 W peak pulse power while maintaining clamping voltage ≤12.9 V up to 46.5 A - enabling robust protection of 3.3 V and 5 V logic interfaces without overstressing downstream ICs like CAN transceivers or ADC front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA; defines safe operating margin for 5 V systems. |
| VBR (min/max) | 8.33 V / 9.21 V at 1.0 mA - symmetric breakdown threshold in both directions; ensures consistent clamping onset regardless of transient polarity. |
| VC @ IPPM | 12.9 V at 46.5 A - maximum clamped voltage during 10/1000 μs surge; limits stress on protected ICs to safe levels. |
| PPPM | 600 W - peak pulse power handling per JEDEC standard; supports IEC 61000-4-5 Level 4 (4 kV) surge testing with proper PCB layout. |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments and industrial enclosures. |
| Qualification | AEC-Q101 qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD (HBM ≥8 kV). |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, bidirectional configuration with no polarity marking; case meets UL 94 V-0, matte tin-plated leads, MSL Level 1 (260 °C reflow peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Acts as cathode during positive transients and anode during negative transients; symmetrical conduction enables dual-polarity clamping. |
| Cathode | Transient return path (bidirectional) | Electrically identical to Anode in bidirectional construction; terminals are interchangeable with no marking required. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., RS-485, CAN, audio) without polarity concerns. |
| 600 W peak pulse power | Withstands 4 kV IEC 61000-4-5 surges on 50 Ω/42 Ω coupling networks when mounted on recommended 5.0 mm × 5.0 mm copper pads. |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules, body electronics, and ADAS sensor interfaces. |
| Low clamping ratio | VC/VBR ≈ 1.55 ensures minimal overvoltage overshoot during fast transients - critical for protecting 3.3 V/5 V logic rails. |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) in engine compartments subject to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt TVS diode placed between signal line and ground, triggered within <1 ns to clamp transients before reaching MCU ADC or LIN transceiver. Use Value: Maintains signal integrity by limiting clamped voltage to 12.9 V while surviving repeated 100 A surge events per AEC-Q101 stress profiles. | Use Scenario: Safeguarding PLC digital input channels connected to 24 V industrial field wiring exposed to inductive switching noise and lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional voltage clamp across input terminal and common rail, absorbing ±1 kV/500 A transients per IEC 61000-4-4. Use Value: Eliminates need for separate unidirectional devices per polarity; reduces BOM count and PCB area vs. discrete diode+Zener solutions. |
| USB 2.0 Data Line Protection | Automotive Infotainment Display Link |
Use Scenario: ESD protection for D+ and D− lines in automotive USB host ports subjected to ±15 kV contact discharge (IEC 61000-4-2). IC Role / Device Role / Timing Role: Low-capacitance (typ. 200 pF at 0 V) bidirectional TVS placed directly at connector, shunting ESD current away from USB PHY. Use Value: Clamps ESD pulses to <15 V within 1 ns, preserving signal rise/fall times and ensuring USB 2.0 eye diagram compliance. | Use Scenario: Transient suppression on FPD-Link III or LVDS video interface cables connecting head unit to TFT display in vehicles. IC Role / Device Role / Timing Role: Symmetric clamping device across differential pair, referenced to chassis ground to suppress common-mode surges induced by motor actuation. Use Value: Prevents pixel corruption or display reset by limiting differential surge voltage to <13 V while maintaining signal integrity up to 3 Gbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5CA | Same VWM (7.5 V), higher VC (13.4 V at 43.3 A), lower PPPM (600 W same), larger SMB (DO-214AA) package (3.56 mm × 4.60 mm vs. SMBG's 3.94 mm × 6.48 mm). | Less space-efficient; thermal resistance RθJA = 110 °C/W vs. SMBG7.5CAHE3/5B's 100 °C/W - slightly reduced surge derating at elevated ambient. | Select SMBJ7.5CA only if legacy SMB footprint is required; SMBG offers better power density and AEC-Q101 qualification out-of-box. |
| 1.5KE7.5CA | Same VWM and bidirectional function, but axial DO-201 package, 1500 W PPPM, higher VC (13.9 V), no AEC-Q101 qualification. | Through-hole mounting only; unsuitable for automated SMT lines or space-constrained automotive modules. | Choose 1.5KE7.5CA only for prototyping or non-automotive industrial repairs where board real estate and qualification are not constraints. |
Compared with SMBJ7.5CA and 1.5KE7.5CA, SMBG7.5CAHE3/5B delivers superior SMT manufacturability, tighter thermal performance, and automotive-grade reliability certification - making it the preferred choice for production-grade automotive and industrial designs requiring zero rework risk and long-term supply stability.
Availability
SMBG7.5CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O hardening, and USB interface safeguarding requiring stable component supply, full traceability, and AEC-Q101-compliant sourcing.
Supply support for SMBG7.5CAHE3/5B 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The SMBG series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-reliability transient suppression in automotive, industrial, and telecom infrastructure where compact size, bidirectional symmetry, and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of SMBG7.5CAHE3/5B at its rated peak pulse current?
The SMBG7.5CAHE3/5B has a maximum clamping voltage (VC) of 12.9 V at 46.5 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured under standardized test conditions per JEDEC and ensures predictable overvoltage limiting during surge events. The SMBG7.5CAHE3/5B maintains this clamping performance across its qualified temperature range (–55 °C to +150 °C) when mounted on the recommended 5.0 mm × 5.0 mm copper pad layout.
Is SMBG7.5CAHE3/5B suitable for automotive applications?
Yes, SMBG7.5CAHE3/5B is AEC-Q101 qualified and explicitly rated for automotive use. Its construction includes glass-passivated junctions, MSL Level 1 reflow compatibility (260 °C peak), and validation across temperature cycling, high-temperature reverse bias (HTRB), and human-body-model ESD (≥8 kV). The SMBG7.5CAHE3/5B is deployed in engine control units, body control modules, and ADAS sensor interfaces where transient immunity and long-term reliability are critical.
How does the bidirectional design of SMBG7.5CAHE3/5B affect circuit layout?
The SMBG7.5CAHE3/5B has no polarity marking and identical electrical behavior in both directions, simplifying PCB layout for AC-coupled or floating signals such as RS-485, CAN, or LVDS pairs. Unlike unidirectional TVS diodes, it eliminates orientation checks during assembly and avoids misplacement risk. The SMBG7.5CAHE3/5B requires only two pads - one connected to the protected line and the other to system ground - with no anode/cathode assignment needed.
What is the maximum reverse leakage current for SMBG7.5CAHE3/5B at its stand-off voltage?
At its 7.5 V stand-off voltage (VWM), the SMBG7.5CAHE3/5B exhibits a maximum reverse leakage current (ID) of 1.0 μA at 25 °C. This low leakage ensures minimal power loss and signal distortion in always-on circuits such as automotive LIN bus nodes or industrial 4–20 mA receivers. The SMBG7.5CAHE3/5B maintains leakage below 5.0 μA up to +125 °C, supporting stable operation across extended temperature ranges.
Does SMBG7.5CAHE3/5B meet industry surge immunity standards?
Yes, the SMBG7.5CAHE3/5B supports compliance with IEC 61000-4-2 (ESD ±15 kV contact), IEC 61000-4-4 (EFT ±2 kV), and IEC 61000-4-5 (surge ±1 kV line-earth, ±0.5 kV line-line) when implemented with proper PCB layout - including short traces, dedicated ground planes, and the recommended 5.0 mm × 5.0 mm copper pads per terminal. The SMBG7.5CAHE3/5B's 600 W peak pulse rating and 12.9 V clamping enable robust pass-level performance in these tests.
SMBG7.5CAHE3/5B 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)
SMBG7.5CAHE3/5B FAQ
1.How can I place an order for SMBG7.5CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG7.5CAHE3/5B 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 SMBG7.5CAHE3/5B reliable?
The price and inventory of SMBG7.5CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG7.5CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG7.5CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG7.5CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG7.5CAHE3/5B?
SMBG7.5CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG7.5CAHE3/5B 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 SMBG7.5CAHE3/5B?
For technical support, including SMBG7.5CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG7.5CAHE3/5B requirements.
6.How does Aetrix verify that SMBG7.5CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG7.5CAHE3/5B 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 SMBG7.5CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG7.5CAHE3/5B?
All SMBG7.5CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG7.5CAHE3/5B, 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 SMBG7.5CAHE3/5B part is unused and in its original packaging.
Return procedure for SMBG7.5CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG7.5CAHE3/5B Tags
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