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Vishay General Semiconductor - Diodes Division SMBG5.0CAHE3/5B
- Part No.:
- SMBG5.0CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5.0CAHE3/5B.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,588
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Product details
Overview
SMBG5.0CAHE3/5B 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 5.0 V stand-off voltage (VWM), 6.4–7.25 V breakdown voltage (VBR), 600 W peak pulse power (10/1000 µs), <1 ns response time, and AEC-Q101 qualification - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMBG5.0CAHE3/5B datasheet, SMBG5.0CAHE3/5B pinout, SMBG5.0CAHE3/5B application, or SMBG5.0CAHE3/5B equivalent, key selection criteria include bidirectional clamping capability, low VC (9.2 V at IPPM), TJ max. of +150 °C, RoHS-compliant HE3 suffix with AEC-Q101 qualification, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped crowbar during transient events: when reverse voltage exceeds VBR (min. 6.4 V), it avalanches into low-impedance conduction to divert surge current away from protected circuitry. Its bidirectional symmetry enables use on AC-coupled or differential lines without polarity concerns.
Clamping performance is defined by VC = 9.2 V at IPPM = 65.2 A (10/1000 µs), with incremental surge resistance <0.14 Ω derived from (VC − VBR)/IPPM. Thermal design relies on RθJA = 100 °C/W (on 5.0 mm × 5.0 mm pads) and junction temperature limit of +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before leakage exceeds 800 µA; sets upper limit for normal-mode signal swing. |
| VBR (min/max) | 6.4 V / 7.25 V at IT = 10 mA - Ensures reliable avalanche initiation across process variation and temperature (−55 °C to +150 °C). |
| VC @ IPPM | 9.2 V at 65.2 A - Clamped voltage seen by protected IC during 600 W surge; determines minimum safe margin for downstream logic rails. |
| PPPM | 600 W (10/1000 µs) - Peak transient energy handling capacity; validated per ANSI/IEEE C62.35 waveform definition. |
| IFSM | Not applicable - Bidirectional device has no forward surge rating; only unidirectional variants specify 100 A (8.3 ms half-sine). |
| Junction Temp | −55 °C to +150 °C - Enables operation in under-hood automotive environments and industrial enclosures without derating. |
| Qualification | AEC-Q101 qualified - Validated for automotive electronics reliability including temperature cycling, HTRB, and ESD testing. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, gull-wing leads, matte tin-plated, MSL Level 1 (260 °C peak reflow), UL 94 V-0 molding compound. Dimensions: 4.57 mm × 3.94 mm × 2.10 mm (L × W × H); cathode band omitted (bidirectional symmetry).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive polarity event) | One terminal of symmetrical PN junction; conducts during positive overvoltage relative to other terminal. |
| Cathode | Transient current entry (negative polarity event) | Other terminal of symmetrical PN junction; conducts during negative overvoltage relative to Anode; functionally identical to Anode in bidirectional mode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC, differential, or floating signal lines (e.g., CAN, RS-485, sensor bridges) without polarity constraints. |
| 600 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) when mounted per recommended 5.0 mm × 5.0 mm pad layout. |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control modules, ADAS sensors, and body electronics. |
| Low clamping voltage (VC = 9.2 V) | Provides ≥1.8 V margin above 5 V logic rails, preventing latch-up or damage to MCU GPIOs and transceivers. |
| Fast response (<1 ns) | Activates before most microsecond-scale transients propagate, protecting sensitive analog front-ends and high-speed interfaces. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) in engine bay modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role: Bidirectional TVS placed between sensor output and MCU input pin, shunting transients to ground. Use Value: Maintains signal integrity during 100 V/50 ms load dump events while preserving <1 µA leakage at 5.0 V nominal supply. | Use Scenario: Safeguarding PLC digital input channels connected to 24 V DC field wiring subject to inductive switching spikes. IC Role / Device Role: Parallel-connected TVS across input terminals, clamping transients before they reach optocoupler or Schmitt trigger inputs. Use Value: Limits voltage to ≤9.2 V during 65 A surges, preventing false triggering and enabling robust 24 V logic level detection. |
| USB Port ESD Protection | RS-485 Transceiver Protection |
Use Scenario: Board-level ESD protection for USB 2.0 D+/D− lines in portable medical devices requiring IEC 61000-4-2 ±15 kV contact discharge compliance. IC Role / Device Role: Low-capacitance bidirectional TVS placed directly at USB connector, referenced to ground. Use Value: Achieves <0.5 pF typical junction capacitance at 0 V bias, minimizing signal distortion while passing ±15 kV ESD strikes. | Use Scenario: Surge protection for RS-485 transceivers in factory automation networks exposed to lightning-induced ground potential differences. IC Role / Device Role: TVS pair (line-to-line and line-to-ground) using SMBG5.0CAHE3/5B on A/B differential pair and common-mode nodes. Use Value: Withstands 4 kV IEC 61000-4-5 common-mode surges while maintaining differential signal fidelity up to 10 Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0CA | Same VWM/VBR/VC, but lower PPPM = 600 W (same rating), different package (SMB vs SMBG); RθJA = 110 °C/W vs 100 °C/W. | Compatible for board space-constrained designs where SMB footprint is preferred; slightly higher thermal resistance requires larger copper area for same power dissipation. | Select SMBJ5.0CA if existing layout uses SMB footprint and thermal margin allows 10 °C/W higher RθJA. |
| 1.5KE5.0CA | Higher PPPM = 1500 W, axial DO-201 package, VC = 9.6 V, slower response due to lead inductance. | Used in through-hole prototyping or legacy industrial systems; not suitable for high-density SMT or >1 Mbps data lines. | Choose 1.5KE5.0CA only for cost-sensitive, non-SMT, low-frequency applications where 1.5 kW surge headroom justifies larger size and slower response. |
Compared with SMBJ5.0CA and 1.5KE5.0CA, SMBG5.0CAHE3/5B delivers superior thermal performance (RθJA = 100 °C/W) and AEC-Q101 qualification in a compact gull-wing package - making it optimal for automotive and high-reliability SMT deployments where board space and qualification compliance are critical.
Availability
SMBG5.0CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, USB port ESD protection, and RS-485 transceiver safeguarding requiring stable component supply and AEC-Q101 traceability.
Supply support for SMBG5.0CAHE3/5B 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBG series was developed for high-power, surface-mount transient suppression in automotive and industrial environments - prioritizing AEC-Q101 qualification, low clamping voltage, and robust thermal performance in compact gull-wing packages.
FAQ
What does the "HE3" suffix indicate in SMBG5.0CAHE3/5B?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification and matte tin-plated gull-wing leads. It confirms compliance with JESD 201 Class 2 whisker resistance, UL 94 V-0 flammability, and automotive-grade reliability testing - distinguishing it from industrial-grade "E3" or halogen-free "HM3" variants. This makes SMBG5.0CAHE3/5B suitable for automotive electronics where qualification traceability is mandatory.
Is SMBG5.0CAHE3/5B unidirectional or bidirectional?
SMBG5.0CAHE3/5B is a bidirectional transient voltage suppressor, as confirmed by the "CA" suffix and electrical specifications showing symmetric VBR (6.4–7.25 V) and VC (9.2 V) in both polarities. Unlike unidirectional "A" variants, it has no polarity marking and protects AC-coupled or differential signal paths without orientation constraints - a key feature for applications like RS-485 or sensor bridge outputs.
What is the maximum clamping voltage (VC) of SMBG5.0CAHE3/5B and under what test condition?
The maximum clamping voltage VC of SMBG5.0CAHE3/5B is 9.2 V, measured at peak pulse current IPPM = 65.2 A using the standardized 10/1000 µs double-exponential surge waveform. This value is guaranteed across temperature (−55 °C to +150 °C) and defines the worst-case voltage imposed on protected circuitry during a 600 W transient event - critical for ensuring compatibility with 5 V logic interfaces.
Can SMBG5.0CAHE3/5B be used in place of SMBJ5.0CA?
SMBG5.0CAHE3/5B is not a direct pin-compatible replacement for SMBJ5.0CA due to differing package outlines: SMBG (DO-215AA) has wider lead spacing (2.16 mm vs 1.90 mm) and longer body (4.57 mm vs 4.06 mm). While both offer identical VWM, VBR, and PPPM, PCB layout modification is required. SMBG5.0CAHE3/5B provides better thermal performance (RθJA = 100 °C/W vs 110 °C/W), making it preferable where thermal headroom is limited.
What is the junction-to-ambient thermal resistance (RθJA) for SMBG5.0CAHE3/5B and how is it measured?
The typical junction-to-ambient thermal resistance RθJA for SMBG5.0CAHE3/5B is 100 °C/W, measured with the device mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal on a standard FR-4 PCB. This value assumes no internal plane layers and defines the temperature rise above ambient per watt of sustained power dissipation - essential for calculating safe operating area during repetitive surge events or elevated ambient conditions.
SMBG5.0CAHE3/5B 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):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 65.2A
- 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)
SMBG5.0CAHE3/5B FAQ
1.How can I place an order for SMBG5.0CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5.0CAHE3/5B 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 SMBG5.0CAHE3/5B reliable?
The price and inventory of SMBG5.0CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5.0CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG5.0CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5.0CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5.0CAHE3/5B?
SMBG5.0CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5.0CAHE3/5B 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 SMBG5.0CAHE3/5B?
For technical support, including SMBG5.0CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5.0CAHE3/5B requirements.
6.How does Aetrix verify that SMBG5.0CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG5.0CAHE3/5B 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 SMBG5.0CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG5.0CAHE3/5B?
All SMBG5.0CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5.0CAHE3/5B, 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 SMBG5.0CAHE3/5B part is unused and in its original packaging.
Return procedure for SMBG5.0CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5.0CAHE3/5B Tags
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