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Vishay General Semiconductor - Diodes Division SMBG16A-E3/5B
- Part No.:
- SMBG16A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG16A-E3/5B.pdf
- Description:
- TVS DIODE 16VWM 26VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,189
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Product details
Overview
SMBG16A-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 16 V stand-off voltage (VWM), 17.8–19.7 V breakdown voltage (VBR) at 1 mA, 26.0 V maximum clamping voltage (VC) at 23.1 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive ECUs, industrial I/O modules, and DC power rail protection.
For engineers reviewing the SMBG16A-E3/5B datasheet, SMBG16A-E3/5B pinout, SMBG16A-E3/5B application, or SMBG16A-E3/5B equivalent, key selection criteria include its AEC-Q101 qualification, DO-215AA (SMBG) package compatibility, low 1.0 μA reverse leakage at VWM, and ability to clamp transients while preserving downstream MOSFET or MCU integrity under ISO 7637-2 pulse 1/2a/5a conditions.
Technical Context
This unidirectional TVS diode operates as a shunt-clamping device: it remains high-impedance below VWM = 16 V, then rapidly avalanches above VBR (min 17.8 V) to limit transient energy. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
Thermal design is constrained by RθJA = 100 °C/W (typical, on 5.0 mm × 5.0 mm copper pads) and TJ(max) = +150 °C, requiring careful PCB copper area allocation. The device meets J-STD-020 MSL Level 1 and supports reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin for 12 V nominal systems. |
| VBR (min/max) | 17.8 V / 19.7 V at IT = 1 mA - Confirmed avalanche onset range; ensures predictable turn-on without premature triggering. |
| VC @ IPPM | 26.0 V at 23.1 A - Clamped voltage during 600 W transient; limits stress on protected 24 V logic or gate drivers. |
| IPPM | 23.1 A - Peak pulse current capability with 10/1000 μs waveform; validates immunity to common automotive load-dump surges. |
| ID @ VWM | 1.0 μA - Ultra-low reverse leakage; avoids parasitic loading on high-impedance sensor bias networks. |
| PPPM | 600 W - Peak pulse power rating; enables single-device protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges. |
| TJ(max) | +150 °C - Maximum junction temperature; supports under-hood automotive deployment with thermal derating. |
Pinout & Package
Package: SMBG (DO-215AA) - surface-mount, gull-wing leaded case with 0.235–0.255 inch length, 0.130–0.155 inch width, and 0.075–0.095 inch height; RoHS-compliant matte tin plating; MSL Level 1, 260 °C reflow capable.
| 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 VIN exceeds VBR. |
| Anode | Reference/ground return path | Must be tied to low-inductance system ground plane; determines clamping reference and affects response time. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per stress test plan. |
| 600 W peak pulse power (10/1000 μs) | Withstands repeated ISO 7637-2 pulse 5a (50 V, 500 ms) events without degradation when properly heatsinked. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns rise time), improving protection margin for sensitive ICs. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage across -55 °C to +150 °C operating range. |
| MSL Level 1 moisture sensitivity | Enables standard SMT assembly without dry-pack or baking; compatible with high-volume automated placement. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply inputs of engine control units (ECUs) against load dump and jump-start transients per ISO 7637-2. IC Role / Device Role / Timing Role: Shunt-clamping TVS diode placed between battery rail and local regulator input. Use Value: Limits clamped voltage to ≤26.0 V during 23.1 A surges, preventing damage to downstream 36 V-rated LDOs and microcontrollers. | Use Scenario: Safeguarding analog front-end inputs of pressure or temperature sensors connected to 24 V industrial PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional transient suppressor on sensor VSENSE line, referenced to system ground. Use Value: Blocks >16 V transients induced by relay coil switching while maintaining <1.0 μA leakage for accurate mV-level signal integrity. |
| DC-DC Converter Input Protection | Telecom Line Card Surge Suppression |
Use Scenario: Input-side overvoltage protection for 12 V → 3.3 V buck converters powering FPGAs in base station power supplies. IC Role / Device Role / Timing Role: Primary clamping device upstream of input filter capacitor and converter IC. Use Value: Absorbs 600 W surge energy without failure, preserving converter enable logic and avoiding latch-up in synchronous rectifiers. | Use Scenario: Secondary-level protection on 48 V phantom-powered telecom line cards exposed to lightning-induced surges (IEC 61000-4-5). IC Role / Device Role / Timing Role: Standoff-rated TVS on DC feed line prior to DC/DC isolation stage. Use Value: Clamps 48 V rail to ≤26.0 V during 1 kV/2 Ω surges, enabling use of lower-voltage-rated optocouplers and isolated gate drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16A-E3/5B | Same VWM/VBR/VC specs but rated for 600 W in SMB (DO-214AA) package; RθJA = 110 °C/W vs. 100 °C/W for SMBG. | Suitable where existing layout uses SMB footprint; slightly higher thermal resistance requires larger copper pads for equivalent surge handling. | Select SMBJ16A-E3/5B only if board space or legacy footprint mandates SMB; otherwise SMBG16A-E3/5B offers better thermal performance. |
| 1.5SMC16A | Same electrical specs but in larger SMC (DO-214AB) package; 1000 W PPPM rating, RθJA = 50 °C/W; higher IFSM = 200 A. | Used where higher single-pulse robustness or manual repairability is required; not drop-in due to larger body and different pad layout. | Choose 1.5SMC16A for high-reliability industrial designs needing >600 W headroom or field-serviceable replacement; not suitable for dense automotive PCBs. |
Compared with SMBJ16A-E3/5B and 1.5SMC16A, SMBG16A-E3/5B delivers optimal balance of AEC-Q101 compliance, thermal efficiency (RθJA = 100 °C/W), and compact DO-215AA footprint - making it preferred for space-constrained, thermally demanding automotive and industrial control applications.
Availability
SMBG16A-E3/5B is available at Aetrix Electronics and suitable for automotive ECU designs, industrial PLC I/O protection, and telecom power feed circuits requiring stable component supply with full traceability and AEC-Q101 assurance.
Supply support for SMBG16A-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, power efficiency, and automotive qualification.
The SMBG TransZORB® series is engineered specifically for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 compliance and repeatable clamping performance are mandatory.
FAQ
What is the maximum clamping voltage of SMBG16A-E3/5B under specified surge conditions?
The SMBG16A-E3/5B has a maximum clamping voltage (VC) of 26.0 V when subjected to its rated peak pulse current (IPPM) of 23.1 A using the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected circuitry downstream will not experience voltages exceeding 26.0 V during such transients - critical for safeguarding 24 V-rated components in automotive and industrial systems. The SMBG16A-E3/5B maintains this clamping performance across its full operating temperature range.
Is SMBG16A-E3/5B qualified for automotive applications?
Yes, SMBG16A-E3/5B is AEC-Q101 qualified, meaning it has passed rigorous stress tests including temperature cycling, highly accelerated life testing (HALT), and surge endurance specifically defined for discrete semiconductor devices in automotive environments. This qualification confirms its suitability for under-hood and chassis-mounted applications such as body control modules, ADAS power supplies, and infotainment system protection - where reliability under thermal shock and repetitive transients is non-negotiable. The SMBG16A-E3/5B carries the HE3/HE3-compatible suffix lineage confirming its automotive-grade status.
What does the "-E3/5B" suffix indicate in SMBG16A-E3/5B?
The "-E3" suffix denotes RoHS-compliant, industrial-grade construction with matte tin-plated leads meeting J-STD-002 solderability standards; "/5B" specifies packaging in 13-inch diameter plastic tape and reel containing 3200 units - optimized for high-speed SMT placement. This differs from "/52" (7-inch reel, 750 units) and ensures compatibility with automated pick-and-place equipment used in volume manufacturing. The SMBG16A-E3/5B's packaging supports JESD201 Class 2 whisker resistance and MSL Level 1 handling without baking.
How does SMBG16A-E3/5B compare to bidirectional TVS diodes like SMBG16CA?
SMBG16A-E3/5B is unidirectional and intended for DC line protection where polarity is fixed (e.g., 12 V supply rails), offering lower leakage (<1.0 μA) and tighter VBR tolerance than its bidirectional counterpart SMBG16CA. The SMBG16CA supports AC-coupled or polarity-agnostic paths (e.g., data lines) but exhibits higher leakage and dual-direction clamping. For 12 V automotive power rails, SMBG16A-E3/5B provides superior noise immunity and more predictable turn-on behavior - confirmed by its dedicated cathode band marking and single-VBR specification.
What is the thermal resistance of SMBG16A-E3/5B, and how does it affect layout design?
The SMBG16A-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal - per Vishay's recommended layout. This value directly impacts sustained surge capability: inadequate copper area raises junction temperature, risking thermal runaway during repetitive transients. Designers must allocate ≥25 mm² of 2-oz copper per pad and avoid thermal reliefs on anode/cathode traces. The SMBG16A-E3/5B's RθJA is 10 °C/W lower than SMBJ16A, justifying its use in thermally dense layouts.
SMBG16A-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):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 23.1A
- 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)
SMBG16A-E3/5B FAQ
1.How can I place an order for SMBG16A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG16A-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 SMBG16A-E3/5B reliable?
The price and inventory of SMBG16A-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 SMBG16A-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBG16A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG16A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG16A-E3/5B?
SMBG16A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG16A-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 SMBG16A-E3/5B?
For technical support, including SMBG16A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG16A-E3/5B requirements.
6.How does Aetrix verify that SMBG16A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG16A-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 SMBG16A-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBG16A-E3/5B?
All SMBG16A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG16A-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 SMBG16A-E3/5B part is unused and in its original packaging.
Return procedure for SMBG16A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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