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Vishay General Semiconductor - Diodes Division SMBG14-E3/5B
- Part No.:
- SMBG14-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG14-E3/5B.pdf
- Description:
- TVS DIODE 14VWM 25.8VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,338
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Product details
Overview
SMBG14-E3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the SMBG package, designed for robust overvoltage protection of sensitive electronics. It features a 14 V standoff voltage (VWM), 15.6–17.2 V breakdown voltage (VBR) at 1 mA, 23.2 V clamping voltage (VC) at 25.9 A peak pulse current, and 600 W peak pulse power dissipation with a 10/1000 µs waveform - deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMBG14-E3/5B datasheet, SMBG14-E3/5B pinout, SMBG14-E3/5B application, or SMBG14-E3/5B equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, DO-215AA package dimensions, thermal resistance data, and direct alternatives for circuit protection design-in and BOM validation.
Technical Context
The SMBG14-E3/5B operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve sub-nanosecond response time and low incremental surge resistance. Its clamping behavior is defined by a 10/1000 µs double-exponential surge waveform, with thermal derating above 25 °C per Fig. 2 and junction-to-ambient thermal resistance of 100 °C/W on standard 5.0 mm × 5.0 mm copper pads.
It supports automated SMT placement per J-STD-002 and JESD 22-B102 solderability standards, with matte tin-plated leads and JESD 201 Class 1A whisker resistance. The cathode band marking enables unambiguous polarity identification during assembly and inspection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA; sets upper limit for protected line voltage |
| VBR (min/max) | 15.6 V / 17.2 V at 1 mA - guaranteed avalanche onset range; ensures consistent turn-on across production lots |
| VC @ IPPM | 23.2 V at 25.9 A - clamped voltage during 600 W transient; defines worst-case overvoltage seen by downstream ICs |
| PPPM | 600 W - peak pulse power handling with 10/1000 µs waveform; validates protection against ISO 7637-2 Pulse 1/2a/5a surges |
| IFSM | 100 A - non-repetitive forward surge rating (8.3 ms half-sine); supports inrush and load-dump immunity in 12 V systems |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments |
| MSL Level | Level 1 (J-STD-020) - no floor life limitation; allows indefinite storage and reflow without baking |
Pinout & Package
Package: DO-215AA (SMBG), surface-mount gull-wing configuration with cathode band marking on one end. Dimensions: 4.57 mm × 3.94 mm × 2.10 mm (L × W × H), 0.255" × 0.155" × 0.083". Mounting requires 5.0 mm × 5.0 mm copper pads per terminal for rated thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to lower-potential side (e.g., ground or return path) in unidirectional clamp configuration |
| Cathode (banded end) | Avalanche clamping node | Connected to protected line (e.g., 12 V rail or CAN_H); conducts when VAK ≥ VBR, shunting surge to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensors |
| Glass-passivated junction | Enables stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| 600 W peak pulse power (10/1000 µs) | Meets ISO 16750-2 and ISO 7637-2 surge immunity requirements for passenger vehicle electronics |
| Low Rsurge (incremental) | Minimizes VC overshoot during fast transients, improving protection margin for 3.3 V/5 V logic interfaces |
| RoHS-compliant, matte tin leads | Ensures compatibility with lead-free reflow profiles and eliminates whisker risk in high-reliability assemblies |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamp |
|---|---|
|
Use Scenario: Protecting 12 V supply inputs in engine control units (ECUs) against load dump and alternator transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and input filter capacitor, conducting only during overvoltage events. Use Value: Limits clamped voltage to 23.2 V, preventing damage to downstream DC/DC controllers and microcontrollers rated for ≤28 V absolute maximum. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Bidirectional-capable but used unidirectionally across signal and return paths to suppress ESD and inductive switching noise. Use Value: Sub-ns response and 23.2 V clamping ensure sensor ICs survive ±8 kV contact ESD (IEC 61000-4-2) without latch-up or parametric shift. |
| Consumer Device USB Port Surge Suppression | Telecom Base Station DC Feed Protection |
|
Use Scenario: Safeguarding USB VBUS lines in portable medical monitors and smart home hubs exposed to human-body-model ESD. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground, cathode-to-VBUS, absorbing positive transients on the 5 V supply line. Use Value: 1 µA max leakage at 14 V preserves standby current budget; 600 W rating handles multiple ESD strikes without degradation. |
Use Scenario: Protecting remote radio head (RRH) DC power feeds (24–48 V) in 5G base stations from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Mounted at power entry point upstream of DC/DC converters, acting as first-line crowbar against multi-kV transients. Use Value: 100 A IFSM and +150 °C TJ rating support operation in uncooled outdoor enclosures with wide ambient temperature swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14A-E3/52 | Same VWM (14 V), identical DO-214AA (SMB) package but 5% VBR tolerance (vs. SMBG14-E3/5B's 6.7%); slightly higher VC (23.2 V vs. 23.2 V - same value, different test condition basis) | Designed for commercial-grade use; lacks AEC-Q101 qualification and MSL Level 1 rating | Select when automotive qualification is not required and cost optimization is prioritized in consumer or industrial designs |
| SMBG14HE3/5B | Identical electrical specs and DO-215AA package; differs only in AEC-Q101 qualification suffix (HE3) and JESD 201 Class 2 whisker rating (vs. E3 Class 1A) | Targeted specifically for automotive safety-critical modules requiring extended whisker reliability testing | Choose SMBG14HE3/5B for ASIL-B systems where enhanced metallurgical reliability is mandated beyond baseline AEC-Q101 |
Compared with SMBJ14A-E3/52 and SMBG14HE3/5B, the SMBG14-E3/5B provides certified AEC-Q101 compliance and MSL Level 1 handling in the DO-215AA footprint - making it optimal for automotive Tier 1 suppliers needing both qualification and process robustness without over-specifying whisker class.
Availability
SMBG14-E3/5B is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and telecom DC feed hardening requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBG14-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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SMBG series was engineered for high-power transient suppression in space-constrained SMT layouts, targeting AEC-Q101-compliant automotive subsystems and harsh-environment industrial controls where failure modes must be rigorously controlled.
FAQ
What is the clamping voltage of SMBG14-E3/5B and how is it measured?
The SMBG14-E3/5B has a maximum clamping voltage (VC) of 23.2 V, measured at a peak pulse current (IPPM) of 25.9 A using a 10/1000 µs waveform. This value represents the worst-case voltage imposed on the protected circuit during a standardized surge event and is confirmed per ANSI/IEEE C62.35. The SMBG14-E3/5B achieves this clamping performance while maintaining low incremental surge resistance for minimal overshoot.
Is SMBG14-E3/5B qualified for automotive applications?
Yes, SMBG14-E3/5B is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet revision 12-Nov-12 (Document Number: 88456). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, validating its suitability for under-hood and cabin electronics. The SMBG14-E3/5B meets the reliability requirements for automotive power distribution and sensor interface protection.
What does the "E3/5B" suffix mean in SMBG14-E3/5B?
The "E3" suffix indicates RoHS-compliant, commercial-grade construction with JESD 201 Class 1A whisker resistance; "5B" denotes packaging in 13-inch diameter plastic tape and reel with a base quantity of 3200 units. This differs from "52" (7-inch reel, 750 units) and "HE3" (AEC-Q101 qualified variant). The SMBG14-E3/5B is therefore optimized for high-volume SMT production with full environmental compliance and logistics scalability.
How does SMBG14-E3/5B differ from SMBJ14A in package and performance?
SMBG14-E3/5B uses the DO-215AA (SMBG) package, which has gull-wing leads and tighter dimensional tolerances than the DO-214AA (SMB) used by SMBJ14A. Electrically, SMBG14-E3/5B offers identical VWM (14 V) and VC (23.2 V), but with AEC-Q101 qualification and MSL Level 1 - whereas SMBJ14A is commercial-grade only. The SMBG14-E3/5B also specifies lower leakage (1 µA vs. 5 µA) at VWM.
Can SMBG14-E3/5B be used in bidirectional configurations?
No - SMBG14-E3/5B is a unidirectional TVS diode, indicated by the "A" suffix (not "CA"). Bidirectional operation requires the CA variant (e.g., SMBG14CA). The SMBG14-E3/5B has a cathode band marking and conducts only when the cathode is more positive than the anode by ≥VBR; using it in reverse-biased AC signal paths would result in unintended conduction and potential failure.
SMBG14-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 25.8V
- Current - Peak Pulse (10/1000µs):
- 23.3A
- 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)
SMBG14-E3/5B FAQ
1.How can I place an order for SMBG14-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG14-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 SMBG14-E3/5B reliable?
The price and inventory of SMBG14-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 SMBG14-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBG14-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG14-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG14-E3/5B?
SMBG14-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG14-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 SMBG14-E3/5B?
For technical support, including SMBG14-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG14-E3/5B requirements.
6.How does Aetrix verify that SMBG14-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG14-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 SMBG14-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBG14-E3/5B?
All SMBG14-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG14-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 SMBG14-E3/5B part is unused and in its original packaging.
Return procedure for SMBG14-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG14-E3/5B Tags
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