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Vishay General Semiconductor - Diodes Division SMBG15A-E3/5B
- Part No.:
- SMBG15A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG15A-E3/5B.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBG15A-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power rails and signal lines. It features a 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 - deployed in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMBG15A-E3/5B datasheet, SMBG15A-E3/5B pinout, SMBG15A-E3/5B application, or SMBG15A-E3/5B equivalent, key selection criteria include unidirectional polarity, DO-215AA (SMBG) package compatibility, AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.4), and 1.0 μA max reverse leakage at VWM.
Technical Context
This TVS diode operates as a shunt-type transient protector, conducting only when reverse voltage exceeds its specified breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5 %), fast response time (<1 ps), and low incremental surge resistance - critical for suppressing ESD, lightning-induced surges, and inductive switching transients.
Thermal performance is defined by RθJA = 100 °C/W (on 5.0 mm × 5.0 mm copper pads) and TJ(max) = +150 °C, supporting operation in under-hood automotive environments and industrial control cabinets where ambient temperatures exceed 85 °C.
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 (e.g., 12 V nominal bus) |
| VBR (min/max) | 16.7 V / 18.5 V at IT = 1 mA - defines precise conduction onset; tight 5 % tolerance enables predictable protection threshold |
| VC @ IPPM | 24.4 V at 24.6 A - clamped voltage during 600 W transient; limits stress on downstream ICs like MCUs or CAN transceivers |
| PPPM | 600 W - peak pulse power handling per 10/1000 μs waveform; validates compliance with ISO 7637-2 Pulse 1/2/5a test levels |
| IFSM | 100 A - non-repetitive forward surge rating (8.3 ms half-sine); supports protection against load dump events in 12 V automotive systems |
| TJ(max) | +150 °C - maximum junction temperature; enables use in AEC-Q101-qualified power modules and engine control units |
| Leakage @ VWM | ≤1.0 μA - ultra-low reverse current preserves battery life in always-on circuits and low-power sensor nodes |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount gull-wing lead frame with matte tin-plated terminals; meets UL 94 V-0, MSL Level 1 (260 °C reflow), and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line (e.g., 12 V rail); conducts surge current to ground when VREV > VBR |
| Anode | Reference/ground return path | Typically tied to system ground plane; must be low-inductance connection to maintain clamping effectiveness |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics per stress test requirements (HTOL, TC, UHAST) |
| Glass passivated junction | Ensures long-term VBR stability and reduced parameter drift across 15-year service life |
| 600 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 5a (500 W typical) with design margin for aging and temperature derating |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage overshoot during fast transients - critical for protecting 3.3 V or 5 V logic interfaces |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly without pre-baking or special handling |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump (ISO 16750-2) and jump-start surges. IC Role / Device Role / Timing Role: Shunt TVS placed between battery rail and input filter capacitor; clamps transients within nanoseconds. Use Value: Limits voltage to ≤24.4 V during 600 W pulses, preventing damage to upstream DC/DC controllers and microcontrollers. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional TVS on 0–10 V or 4–20 mA output lines, referenced to system ground. Use Value: Suppresses EFT bursts (IEC 61000-4-4) and cable discharge events while adding <1 pF capacitance to preserve signal integrity. |
| Consumer Device USB Port Protection | Telecom Power Supply Inrush Suppression |
Use Scenario: Secondary-level surge protection on VBUS line of USB-C ports in portable monitors and docking stations. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after primary fuse and common-mode choke; handles hot-plug transients. Use Value: Clamps VBUS to 24.4 V during ±1 kV ESD contact discharge (IEC 61000-4-2), preserving USB PD controller functionality. | Use Scenario: Front-end protection of AC/DC power supplies in base station remote radio units exposed to lightning-induced surges. IC Role / Device Role / Timing Role: First-stage TVS on DC output rail (e.g., +48 V), coordinated with MOV and gas discharge tube. Use Value: Absorbs 600 W energy from induced surges without thermal runaway, enabling fail-safe shutdown via upstream OVP circuitry. |
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-E3/5B | Same VWM (15 V), but lower PPPM = 600 W (identical), higher VC = 24.4 V (same), yet rated for IFSM = 100 A (same); differs only in package outline (DO-214AA vs. DO-215AA) | DO-214AA footprint requires PCB layout change; identical electrical specs support drop-in replacement if board supports both packages | Select SMBJ15A-E3/5B only when legacy DO-214AA land pattern is fixed and no redesign is permitted. |
| 1.5SMC15A-E3/5B | Same VWM/VBR/VC, but larger SMC (DO-214AB) package; higher thermal mass yields RθJA = 40 °C/W (vs. 100 °C/W), enabling higher duty-cycle operation | Requires larger PCB area (7.11 mm × 6.22 mm vs. 4.57 mm × 3.94 mm); suited for high-reliability telecom power where surge repetition is expected | Choose 1.5SMC15A-E3/5B when thermal management under repetitive surges is prioritized over space-constrained layouts. |
Compared with SMBJ15A-E3/5B and 1.5SMC15A-E3/5B, SMBG15A-E3/5B delivers identical clamping performance in the smallest footprint (DO-215AA), making it optimal for space-limited automotive modules and portable industrial devices where board area is at premium.
Availability
SMBG15A-E3/5B is available at Aetrix Electronics and suitable for automotive power input protection, industrial sensor interface hardening, and consumer USB port surge suppression requiring stable component supply across multi-year production cycles.
Supply support for SMBG15A-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, AEC-Q qualification, and high-volume manufacturability.
The SMBG series is engineered for surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where compact size, AEC-Q101 compliance, and repeatable clamping performance are mandatory.
FAQ
What is the breakdown voltage range of the SMBG15A-E3/5B?
The SMBG15A-E3/5B has a guaranteed breakdown voltage (VBR) range of 16.7 V to 18.5 V at a test current of 1 mA, per the Vishay datasheet revision 09-Jan-2024. This 5 % tolerance ensures consistent clamping behavior across production lots and temperature extremes, directly supporting design margin calculations for protected 12 V systems. The SMBG15A-E3/5B maintains this specification under full AEC-Q101 stress validation.
Is the SMBG15A-E3/5B suitable for automotive applications?
Yes, the SMBG15A-E3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its +150 °C maximum junction temperature, 100 A IFSM rating for load dump immunity, and MSL Level 1 reflow compatibility meet stringent automotive manufacturing and field reliability requirements. The SMBG15A-E3/5B appears in Vishay's automotive-grade ordering codes (e.g., HE3/HM3 suffix variants), confirming its qualification scope.
What is the clamping voltage of the SMBG15A-E3/5B at its rated peak pulse current?
The SMBG15A-E3/5B clamps to a maximum of 24.4 V at its rated peak pulse current of 24.6 A (corresponding to 600 W with a 10/1000 μs waveform). This value is measured per ANSI/IEEE C62.35 standards and defines the upper voltage limit imposed on protected circuitry during worst-case transients. The SMBG15A-E3/5B achieves this with minimal overshoot due to its sub-nanosecond response time and low dynamic impedance.
Does the SMBG15A-E3/5B have polarity marking, and how is it identified?
Yes, the SMBG15A-E3/5B is unidirectional and features a cathode band (dark stripe) on the package body, aligned with the cathode terminal. Per Vishay mechanical drawings, this band corresponds to the shorter lead side in gull-wing configuration and must be oriented toward the protected line (e.g., 12 V rail), while the anode connects to ground. The SMBG15A-E3/5B follows JEDEC DO-215AA pinout conventions, verified in the package outline diagram on page 5 of document 88456.
What is the maximum reverse leakage current of the SMBG15A-E3/5B at its stand-off voltage?
The SMBG15A-E3/5B exhibits a maximum reverse leakage current (ID) of 1.0 μA at its rated stand-off voltage (VWM) of 15 V and ambient temperature of 25 °C. This ultra-low leakage preserves standby power in always-on automotive modules and battery-powered IoT sensors. The SMBG15A-E3/5B maintains leakage <5 μA up to +85 °C, as confirmed by Vishay's thermal derating curves in figure 2 of the datasheet.
SMBG15A-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:
- 1
- Bidirectional Channels:
- -
- 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)
SMBG15A-E3/5B FAQ
1.How can I place an order for SMBG15A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG15A-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 SMBG15A-E3/5B reliable?
The price and inventory of SMBG15A-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 SMBG15A-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBG15A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG15A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG15A-E3/5B?
SMBG15A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG15A-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 SMBG15A-E3/5B?
For technical support, including SMBG15A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG15A-E3/5B requirements.
6.How does Aetrix verify that SMBG15A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG15A-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 SMBG15A-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBG15A-E3/5B?
All SMBG15A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG15A-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 SMBG15A-E3/5B part is unused and in its original packaging.
Return procedure for SMBG15A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG15A-E3/5B Tags
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