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Vishay General Semiconductor - Diodes Division SMBG15CA-E3/5B
- Part No.:
- SMBG15CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG15CA-E3/5B.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,397
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Product details
Overview
SMBG15CA-E3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), clamping voltage of 24.4 V at 24.6 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMBG15CA-E3/5B datasheet, SMBG15CA-E3/5B pinout, SMBG15CA-E3/5B application, or SMBG15CA-E3/5B equivalent, this device is selected for high-energy surge suppression on bidirectional signal lines, DC power rails, and sensor interfaces where low clamping ratio, fast response (<1 ns), and repeatable surge handling under automotive thermal conditions are critical.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR, IPPM, and VC specifications in forward and reverse directions. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and low incremental surge resistance, enabling precise clamping without degradation under repetitive transients.
The device uses a planar silicon avalanche structure optimized for 10/1000 µs waveform compliance and meets MSL Level 1 (260 °C reflow). Thermal resistance is RθJA = 100 °C/W (on 5.0 mm × 5.0 mm copper pads), supporting operation from –55 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin for protected line. |
| VBR (min/max) | 16.7 V / 18.5 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during fast transients. |
| VC @ IPPM | 24.4 V at 24.6 A - Clamped voltage under 600 W 10/1000 µs surge; limits downstream IC stress to safe levels. |
| PPPM | 600 W - Peak pulse power rating; supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly laid out. |
| ID @ VWM | <1.0 µA - Ultra-low reverse leakage at rated stand-off; avoids signal distortion or power loss in high-impedance circuits. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments and industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive applications per stress test requirements including HTOL, TCT, and ESD HBM ≥ 8 kV. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, gull-wing lead form, matte tin-plated terminals, RoHS-compliant (E3 suffix), UL 94 V-0 molding compound. No polarity marking - bidirectional symmetry eliminates cathode/anode orientation concerns during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional surge path terminal | Both terminals function identically; connects across protected line (e.g., between signal and ground or differential pair); no orientation dependency in layout. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against IEC 61000-4-5 surges up to 4 kV in standard PCB layouts with 5 mm² copper pads. |
| AEC-Q101 qualified | Validated for automotive powertrain, body control, and ADAS modules requiring long-term reliability under thermal cycling and humidity. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage exposure to downstream ICs-critical for 3.3 V or 5 V logic interfacing with sensors or CAN transceivers. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow without preconditioning; eliminates moisture-related popcorning risk during assembly. |
| Glass passivated junction | Ensures stable electrical parameters over time and temperature; prevents parameter drift under repeated surge stress. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control units and battery management systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across sensor signal and ground to clamp ESD and load-dump transients. Use Value: Maintains signal integrity below 24.4 V clamping level while surviving >1000 surges per AEC-Q101 stress profile. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., SN65HVD230) against induced lightning surges on factory floor cabling. IC Role / Device Role / Timing Role: Differential-line TVS connected between A/B bus lines and ground to suppress common-mode transients. Use Value: Limits bus voltage excursion to ≤24.4 V during 600 W surges, preventing transceiver latch-up or permanent damage. |
| Consumer USB Port ESD | Telecom DSL Line Protection |
Use Scenario: ESD protection on USB 2.0 D+/D− lines in set-top boxes and smart home hubs exposed to human-body-model discharges. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed directly at connector to shunt HBM/CDM events. Use Value: Sub-1 µA leakage preserves signal rise/fall times; clamps 8 kV HBM transients within <1 ns without data corruption. |
Use Scenario: Primary surge protection on POTS/DSL line cards subjected to AC power cross-talk and induced surges. IC Role / Device Role / Timing Role: High-power TVS mounted at line entry point to absorb multi-kV transients before front-end transformer. Use Value: Withstands 600 W pulses without degradation, extending service life of telecom infrastructure under harsh electrical environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA | Same VWM (15 V), lower PPPM (600 W → 400 W), higher VC (24.4 V → 24.5 V), SMB (DO-214AA) package (larger footprint). | Limited to lower-energy surges; not AEC-Q101 qualified; suitable for consumer-grade designs only. | Select SMBJ15CA only if cost is prioritized over automotive qualification and surge margin. |
| SMAJ15CA | Same VWM (15 V), reduced PPPM (400 W), higher VC (24.4 V → 28.5 V), SMA (DO-214AC) package (smaller pad area, higher RθJA). | Lower surge capability and thermal performance; unsuitable for automotive or industrial environments above 85 °C ambient. | Choose SMAJ15CA only for space-constrained, non-automotive applications with verified <400 W surge exposure. |
Compared with SMBJ15CA and SMAJ15CA, SMBG15CA-E3/5B delivers superior automotive qualification, identical clamping performance at higher surge energy, and optimized thermal dissipation in the SMBG package-making it the preferred choice for AEC-Q101–mandated designs requiring full 600 W margin.
Availability
SMBG15CA-E3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial communication ports, consumer USB protection, and telecom line-card surge suppression requiring stable component supply and long-term lifecycle support.
Supply support for SMBG15CA-E3/5B 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 to deliver high-power, AEC-Q101–qualified TVS protection in compact surface-mount packages for automotive and industrial systems demanding consistent surge immunity and thermal resilience.
FAQ
What is the clamping voltage of SMBG15CA-E3/5B at its rated peak pulse current?
The SMBG15CA-E3/5B has a maximum clamping voltage (VC) of 24.4 V at its peak pulse current (IPPM) of 24.6 A, measured under the standardized 10/1000 µs waveform. This value is confirmed in the Vishay datasheet (Document Number: 88456, page 2) and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBG15CA-E3/5B maintains this clamping performance across its full operating temperature range.
Is SMBG15CA-E3/5B suitable for automotive applications?
Yes, SMBG15CA-E3/5B is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet (page 1, "FEATURES" section and page 3, "Note (1)"). It undergoes stress testing for high-temperature operating life, temperature cycling, and ESD (HBM ≥ 8 kV), making it suitable for under-hood and cabin electronics. The SMBG15CA-E3/5B is specified for junction temperatures up to +150 °C and meets MSL Level 1 for lead-free reflow compatibility.
What does the 'CA' suffix indicate in SMBG15CA-E3/5B?
The 'CA' suffix in SMBG15CA-E3/5B denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression in both polarities-no cathode marking is present, and electrical characteristics (VBR, VC, IPPM) apply identically in either direction. This is distinct from unidirectional variants (e.g., SMBG15A), which feature a cathode band and conduct only in reverse bias. The CA designation is defined in the Vishay document's "DEVICES FOR BIDIRECTION APPLICATIONS" section.
What is the maximum reverse leakage current for SMBG15CA-E3/5B at its stand-off voltage?
The SMBG15CA-E3/5B exhibits a maximum reverse leakage current (ID) of 1.0 µA at its rated stand-off voltage (VWM) of 15 V, as specified in the Electrical Characteristics table (page 2 of Document 88456). This ultra-low leakage ensures minimal impact on high-impedance sensor outputs or battery-powered circuits, preserving accuracy and extending operational battery life in portable and automotive applications.
What package type does SMBG15CA-E3/5B use, and what are its key mechanical features?
SMBG15CA-E3/5B uses the SMBG (DO-215AA) package-a low-profile, gull-wing surface-mount outline with 0.235–0.255 inch length and 0.130–0.155 inch width. Key features include matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, UL 94 V-0 flammability-rated molding compound, and MSL Level 1 rating (260 °C peak reflow). The package is detailed in the "MECHANICAL DATA" section and dimensioned on page 5 of the Vishay datasheet.
SMBG15CA-E3/5B 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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 24.6A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG15CA-E3/5B FAQ
1.How can I place an order for SMBG15CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG15CA-E3/5B 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 SMBG15CA-E3/5B reliable?
The price and inventory of SMBG15CA-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG15CA-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBG15CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG15CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG15CA-E3/5B?
SMBG15CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG15CA-E3/5B 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 SMBG15CA-E3/5B?
For technical support, including SMBG15CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG15CA-E3/5B requirements.
6.How does Aetrix verify that SMBG15CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG15CA-E3/5B 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 SMBG15CA-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBG15CA-E3/5B?
All SMBG15CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG15CA-E3/5B, 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 SMBG15CA-E3/5B part is unused and in its original packaging.
Return procedure for SMBG15CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG15CA-E3/5B Tags
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