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Vishay General Semiconductor - Diodes Division SMBG15-E3/52
- Part No.:
- SMBG15-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG15-E3/52.pdf
- Description:
- TVS DIODE 15VWM 26.9VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,829
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Product details
Overview
SMBG15-E3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-215AA (SMBG) package, designed for clamping inductive load switching surges and lightning-induced transients on power rails and signal lines. It features 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR at 1 mA), 24.4 V clamping voltage (VC) at 24.6 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used in automotive body control modules and industrial sensor interface protection.
For engineers reviewing the SMBG15-E3/52 datasheet, SMBG15-E3/52 pinout, SMBG15-E3/52 application, or SMBG15-E3/52 equivalent, key selection criteria include unidirectional polarity, 150 °C maximum junction temperature, AEC-Q101 qualification (via HE3 variant), RoHS-compliant matte tin plating, and MSL Level 1 moisture sensitivity per J-STD-020.
Technical Context
This TVS diode operates as a voltage-clamping protection device in series with DC power inputs or parallel to sensitive IC pins. Its glass-passivated silicon junction enables sub-nanosecond response time and low incremental surge resistance, ensuring effective suppression of fast-rising transients up to 24.6 A under standardized 10/1000 µs surge conditions.
The SMBG15-E3/52 is rated for -55 °C to +150 °C operating junction temperature, exhibits 1.0 µA max reverse leakage at 15 V, and delivers stable clamping performance when mounted on 5.0 mm × 5.0 mm copper pads per Vishay's recommended layout - critical for thermal dissipation during repetitive surge events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 15 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 16.7–18.5 V at 1 mA - Confirmed minimum/maximum threshold where avalanche conduction initiates reliably. |
| VC (Clamping Voltage) | 24.4 V at 24.6 A - Peak voltage seen by protected circuit during full-rated 600 W transient; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability under 10/1000 µs waveform; validates robustness against IEC 61000-4-5 surges. |
| IPPM (Peak Pulse Current) | 24.6 A - Maximum non-repetitive surge current the device safely diverts without degradation. |
| TJmax | 150 °C - Maximum allowable junction temperature; sets thermal design limits for PCB pad sizing and airflow. |
| Leakage (ID) | 1.0 µA at VWM - Minimal standby power loss and signal integrity impact in high-impedance circuits. |
Pinout & Package
Package: DO-215AA (SMBG), surface-mount gull-wing lead configuration. Cathode indicated by molded band on case end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes clamping loop during positive transients on cathode side. |
| Cathode | High-side connection point | Connected to protected line (e.g., 12 V rail); conducts avalanche current to anode during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified variant available | SMBG15HE3/52 meets automotive-grade reliability testing including temperature cycling, HTRB, and ESD. |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under humidity and thermal stress. |
| MSL Level 1 rating | Allows unlimited floor life and reflow up to 260 °C peak, compatible with standard SMT assembly processes. |
| 600 W peak pulse power | Validated per 10/1000 µs waveform; supports protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3/4 surges. |
| Matte tin plated leads | Complies with J-STD-002 and JESD 22-B102 solderability standards; prevents intermetallic growth during reflow. |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Line |
|---|---|
|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load dump and alternator ripple in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between LIN line and ground to clamp negative transients while blocking normal signal swing. Use Value: Limits voltage excursion to ≤24.4 V during 24.6 A surges, preventing latch-up or gate oxide damage in connected transceivers. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors interfacing with PLC analog input cards. IC Role / Device Role / Timing Role: Parallel-connected clamping device across 4–20 mA current loop terminals to absorb field-wiring induced surges. Use Value: Maintains <1.0 µA leakage at 15 V, avoiding offset errors in precision current-loop measurement circuits. |
| Consumer Power Adapter Input | Telecom DC Power Distribution |
|
Use Scenario: Secondary-side overvoltage protection on 5–19 V SMPS outputs feeding USB-C PD controllers or display logic. IC Role / Device Role / Timing Role: Standoff-rated clamping element placed between regulated output and ground to suppress transformer ringing and MOSFET turn-off spikes. Use Value: Clamps within 1 ns to 24.4 V, limiting transient duration and energy delivered to downstream LDOs or USB interface ICs. |
Use Scenario: Front-end protection on -48 V telecom power feeds entering base station backplanes or remote radio units. IC Role / Device Role / Timing Role: Unidirectional TVS installed between -48 V rail and chassis ground to shunt positive-going surges from lightning coupling. Use Value: Withstands 150 °C junction temperature and 100 A IFSM, enabling reliable operation in sealed, high-ambient telecom enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A-E3/52 | Same VWM (15 V), identical DO-214AA (SMB) package but 600 W rating at 10/1000 µs; slightly higher VC (24.5 V) and lower IPPM (24.4 A). | Compatible with existing SMB footprint; requires verification of pad thermal mass due to different thermal resistance (RθJA = 110 °C/W vs. SMBG's 100 °C/W). | Select when legacy SMB layout reuse is required and minor clamping voltage increase is acceptable. |
| 1.5SMC15A | Same electrical specs (VWM = 15 V, VC = 24.4 V), but in larger DO-214AB (SMC) package with higher thermal mass and RθJA = 60 °C/W. | Requires PCB redesign; suited for high-reliability industrial systems needing extended surge endurance beyond single-event rating. | Choose for applications demanding >1000 surge cycles or operation above 125 °C ambient. |
Compared with SMBG15-E3/52, SMBJ15A-E3/52 offers footprint compatibility but reduced thermal margin, while 1.5SMC15A provides superior thermal handling at the cost of board space - making SMBG15-E3/52 optimal for space-constrained automotive and consumer designs requiring AEC-Q101 alignment and MSL Level 1 process compatibility.
Availability
SMBG15-E3/52 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and telecom power distribution requiring stable component supply with traceable sourcing and lifecycle continuity.
Supply support for SMBG15-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 application-specific optimization.
The SMBG series was engineered for high-power, surface-mount transient suppression in automotive and industrial environments - delivering AEC-Q101 compliance, low-profile packaging, and consistent clamping performance across temperature and surge repetition rates.
FAQ
What is the polarity configuration of SMBG15-E3/52?
SMBG15-E3/52 is a unidirectional transient voltage suppressor diode, meaning it conducts only in reverse-bias avalanche mode. The cathode is marked by a visible band on the SMBG package body, and the device blocks forward current up to its rated IFSM of 100 A. This polarity ensures precise clamping on positive transients applied to the cathode terminal while maintaining high impedance during normal 15 V DC operation.
Does SMBG15-E3/52 meet automotive qualification standards?
SMBG15-E3/52 itself is RoHS-compliant commercial-grade; however, its AEC-Q101-qualified counterpart SMBG15HE3/52 is explicitly certified for automotive use. The HE3 suffix denotes qualification per AEC-Q101 stress tests including HTGB, TCT, and H3TRB. For automotive designs, SMBG15HE3/52 must be specified - SMBG15-E3/52 is not qualified and should not be deployed in safety-critical vehicle systems.
What is the maximum clamping voltage of SMBG15-E3/52 under rated surge conditions?
The maximum clamping voltage (VC) of SMBG15-E3/52 is 24.4 V when subjected to its rated peak pulse current of 24.6 A using the standardized 10/1000 µs waveform. This value is measured at the device terminals under defined test conditions (TA = 25 °C, mounted on 5.0 mm × 5.0 mm copper pads), and represents the upper bound voltage imposed on protected circuitry during worst-case transient events.
How does the SMBG package differ from SMB in mechanical and thermal performance?
The SMBG (DO-215AA) package has gull-wing leads with tighter pitch and lower profile than the SMB (DO-214AA) package, enabling finer-pitch placement and improved automated assembly yield. Thermally, SMBG15-E3/52 achieves RθJA = 100 °C/W versus ~110 °C/W for SMBJ variants - a 10 °C/W improvement that enhances sustained surge handling in compact layouts without additional heatsinking.
Can SMBG15-E3/52 be used in bi-directional protection applications?
No - SMBG15-E3/52 is strictly unidirectional and lacks symmetrical breakdown characteristics. For bi-directional protection, Vishay specifies parts with the "CA" suffix (e.g., SMBG15CA), which feature matched avalanche thresholds in both polarities. Using SMBG15-E3/52 in AC or bidirectional signal paths would result in forward conduction during half-cycles, causing failure or system malfunction.
SMBG15-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 26.9V
- Current - Peak Pulse (10/1000µs):
- 22.3A
- 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)
SMBG15-E3/52 FAQ
1.How can I place an order for SMBG15-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG15-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 SMBG15-E3/52 reliable?
The price and inventory of SMBG15-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 SMBG15-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG15-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG15-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG15-E3/52?
SMBG15-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG15-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 SMBG15-E3/52?
For technical support, including SMBG15-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG15-E3/52 requirements.
6.How does Aetrix verify that SMBG15-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG15-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 SMBG15-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG15-E3/52?
All SMBG15-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG15-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 SMBG15-E3/52 part is unused and in its original packaging.
Return procedure for SMBG15-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG15-E3/52 Tags
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