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Vishay General Semiconductor - Diodes Division SMBG15CA-E3/52
- Part No.:
- SMBG15CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG15CA-E3/52.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,059
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Product details
Overview
SMBG15CA-E3/52 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 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR) at 1 mA, 24.4 V maximum clamping voltage (VC) at 24.6 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMBG15CA-E3/52 datasheet, SMBG15CA-E3/52 pinout, SMBG15CA-E3/52 application, or SMBG15CA-E3/52 equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.43), 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 bidirectional TVS operates symmetrically in both polarities, with identical VBR, VC, and IPPM specifications for positive and negative transients. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ns), critical for protecting high-speed analog and digital signal paths against ESD per IEC 61000-4-2 and lightning surges per IEC 61000-4-5.
The device is rated for 600 W peak pulse power under 10/1000 μs waveform at 0.01% duty cycle, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead). It meets MSL level 1 per J-STD-020 and is qualified to AEC-Q101 for automotive under-hood and chassis applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping begins; sets safe margin below system rail voltage. |
| VBR (min/max) | 16.7 V / 18.5 V at 1 mA - Confirmed breakdown threshold in both directions; defines minimum overvoltage triggering point. |
| VC @ IPPM | 24.4 V at 24.6 A - Clamped voltage during 10/1000 μs surge; determines protected circuit's maximum stress level. |
| PPPM | 600 W - Peak transient power handling capability; supports robust protection against repetitive surges in harsh environments. |
| ID @ VWM | ≤1.0 μA - Ultra-low reverse leakage ensures minimal standby power loss and signal integrity in high-impedance circuits. |
| TJ Range | –55 °C to +150 °C - Full automotive-grade operating temperature range; validated for engine control units and ADAS sensors. |
| Package | SMBG (DO-215AA) - Surface-mount, low-profile package with matte tin-plated leads; compatible with J-STD-002 soldering standards. |
Pinout & Package
SMBG15CA-E3/52 uses the SMBG (DO-215AA) package: a two-terminal, bidirectional surface-mount device with no polarity marking. Terminals are symmetrical - either end functions as anode or cathode depending on transient polarity. The package measures 4.57 mm × 3.94 mm × 2.10 mm (L × W × H) with 0.76 mm lead thickness and 1.47 mm terminal width.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Transient Input/Output Node | Connects to protected line (e.g., CAN_H or LIN bus); conducts surge current bidirectionally to ground or rail. |
| Terminal 2 | Transient Input/Output Node | Second connection point to same protected line; completes symmetrical clamping path with Terminal 1. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including powertrain, body electronics, and ADAS; supports 15-year vehicle lifecycle requirements. |
| 600 W peak pulse power (10/1000 μs) | Withstands repeated lightning-induced surges in industrial fieldbus and automotive data networks without degradation. |
| Clamping voltage ≤24.4 V at 24.6 A | Ensures downstream ICs (e.g., RS-485 transceivers, microcontrollers) remain below absolute maximum ratings during transients. |
| MSL Level 1, 260 °C reflow compatible | Enables single-pass lead-free reflow assembly without moisture-related popcorn failure or delamination. |
| Glass-passivated junction | Provides stable VBR tolerance (±5%), low leakage, and long-term reliability under thermal cycling and humidity stress. |
Applications
| Automotive Sensor Interface | Industrial RS-485 Bus Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between sensor output and microcontroller ADC input, shunting transients to ground. Use Value: Maintains signal fidelity by limiting transient overshoot to ≤24.4 V while supporting –40 °C to +125 °C ambient operation. |
Use Scenario: Safeguarding differential data lines in factory automation PLCs connected to long cable runs susceptible to induced surges. IC Role / Device Role / Timing Role: Line-to-line and line-to-ground TVS pair on RS-485 A/B terminals, suppressing common-mode and differential-mode transients. Use Value: Prevents communication lockup by clamping surges within 1 ns, preserving data integrity across 10 Mbps full-duplex links. |
| Consumer USB Port ESD Protection | Telecom DSL Line Surge Suppression |
Use Scenario: Secondary-level ESD protection on USB 2.0 D+/D– lines in set-top boxes and smart displays subjected to IEC 61000-4-2 ±8 kV contact discharge. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp placed after primary polymer-based TVS, absorbing residual energy post-clamp. Use Value: Reduces junction capacitance impact (typ. <50 pF at 0 V) while delivering sub-25 V clamping to preserve signal rise/fall times. |
Use Scenario: Front-end surge protection for ADSL/VDSL line cards interfacing with outdoor copper pairs vulnerable to lightning-induced surges. IC Role / Device Role / Timing Role: Primary line-to-line protector on twisted-pair inputs, coordinated with gas discharge tube (GDT) for staged energy handling. Use Value: Handles 600 W peak power without thermal runaway, enabling compliance with ITU-T K.20/K.21 telecom surge immunity standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA-E3/52 | Same VWM (15 V) and VC (24.4 V), but lower PPPM = 600 W (same rating), higher IFSM = 100 A vs. SMBG15CA's unidirectional-only IFSM. | Designed for general-purpose PCB layouts; lacks AEC-Q101 qualification and MSL Level 1 reflow rating. | Select when automotive qualification is not required and cost optimization is prioritized over extended reliability validation. |
| SMCJ15CA-E3/52 | Same electrical specs but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm); higher thermal mass yields RθJA = 35 °C/W vs. SMBG's 100 °C/W. | Better suited for high-power, low-density boards where footprint is less constrained and heat dissipation is critical. | Choose when board space allows and sustained surge duty cycles demand superior thermal performance over compactness. |
Compared with SMBJ15CA-E3/52 and SMCJ15CA-E3/52, SMBG15CA-E3/52 delivers AEC-Q101 assurance and MSL Level 1 compatibility in the smallest qualified footprint, making it optimal for space-constrained automotive and industrial modules requiring zero rework risk in high-volume SMT production.
Availability
SMBG15CA-E3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial RS-485 interface hardening, and telecom DSL line surge suppression requiring stable component supply across multi-year production programs.
Supply support for SMBG15CA-E3/52 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, efficiency, and automotive-grade qualification.
The SMBG series was engineered specifically for high-reliability surface-mount transient suppression in space-constrained automotive and industrial systems, balancing low profile, AEC-Q101 compliance, and repeatable clamping performance.
FAQ
What is the clamping voltage of SMBG15CA-E3/52 at its rated peak pulse current?
The SMBG15CA-E3/52 has a maximum clamping voltage (VC) of 24.4 V at 24.6 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured bidirectionally and confirmed per Vishay Document Number 88456. The SMBG15CA-E3/52 maintains this clamping performance across its full operating temperature range of –55 °C to +150 °C.
Is SMBG15CA-E3/52 qualified for automotive applications?
Yes, SMBG15CA-E3/52 is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet (Document Number 88456, Revision 09-Jan-2024). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD robustness - validating its use in engine control units, ADAS sensors, and body electronics. The SMBG15CA-E3/52 carries the HE3 suffix variant for AEC-Q101 compliance.
What is the standoff voltage and breakdown voltage range for SMBG15CA-E3/52?
The SMBG15CA-E3/52 has a reverse stand-off voltage (VWM) of 15 V and a breakdown voltage (VBR) range of 16.7 V to 18.5 V at 1 mA test current, applicable in both directions. These values are specified in the "ELECTRICAL CHARACTERISTICS" table of the Vishay datasheet and reflect bidirectional symmetry essential for protecting AC-coupled or differential signal lines.
Does SMBG15CA-E3/52 have polarity markings on the package?
No, SMBG15CA-E3/52 does not have polarity markings because it is a bidirectional TVS diode. The SMBG (DO-215AA) package is symmetrical with no cathode band or other orientation indicators - either terminal functions identically regardless of applied transient polarity. This simplifies layout and eliminates orientation errors during automated placement.
What is the thermal resistance and maximum junction temperature of SMBG15CA-E3/52?
The SMBG15CA-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and a maximum junction temperature (TJ) of +150 °C. These parameters are defined under standard mounting conditions (0.2" × 0.2" copper pads per terminal) and enable reliable operation in under-hood automotive environments. The SMBG15CA-E3/52 also features RθJL = 20 °C/W for improved heat transfer to PCB traces.
SMBG15CA-E3/52 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):
- 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-E3/52 FAQ
1.How can I place an order for SMBG15CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG15CA-E3/52 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 SMBG15CA-E3/52 reliable?
The price and inventory of SMBG15CA-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG15CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG15CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG15CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG15CA-E3/52?
SMBG15CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG15CA-E3/52 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 SMBG15CA-E3/52?
For technical support, including SMBG15CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG15CA-E3/52 requirements.
6.How does Aetrix verify that SMBG15CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG15CA-E3/52 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 SMBG15CA-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG15CA-E3/52?
All SMBG15CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG15CA-E3/52, 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 SMBG15CA-E3/52 part is unused and in its original packaging.
Return procedure for SMBG15CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG15CA-E3/52 Tags
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