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Vishay General Semiconductor - Diodes Division SMBG14AHE3/5B
- Part No.:
- SMBG14AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG14AHE3/5B.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,856
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Product details
Overview
SMBG14AHE3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of sensitive electronics. It features 14 V stand-off voltage (VWM), 15.6–17.2 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 μs), 23.2 V clamping voltage (VC) at 25.9 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMBG14AHE3/5B datasheet, SMBG14AHE3/5B pinout, SMBG14AHE3/5B application, or SMBG14AHE3/5B equivalent, key selection criteria include clamping performance under 10/1000 μs surge, junction temperature derating above 25 °C, unidirectional polarity with cathode band marking, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a shunt-clamping device that remains high-impedance below VWM = 14 V and rapidly transitions to low-impedance conduction once VBR (15.6–17.2 V) is exceeded. Its glass-passivated junction ensures stable avalanche characteristics and low incremental surge resistance, enabling consistent clamping at VC = 23.2 V under 25.9 A IPPM.
The SMBG14AHE3/5B is rated for TJ = –55 °C to +150 °C, with thermal resistance RθJA = 100 °C/W (on 0.2" × 0.2" pads) and RθJL = 20 °C/W, supporting reliable operation in thermally constrained automotive and industrial PCB layouts without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 15.6 V / 17.2 V at IT = 1 mA - Ensures precise, repeatable avalanche initiation across production lots |
| VC @ IPPM | 23.2 V at 25.9 A - Limits downstream IC voltage stress during 600 W transient events |
| PPPM | 600 W (10/1000 μs) - Withstands automotive load-dump and ISO 7637-2 pulse 1/2/5a surges |
| IFSM | 100 A (8.3 ms half-sine) - Supports single-event surge immunity in power-line interfaces |
| TJ max | +150 °C - Enables placement near heat-generating components in engine control units |
| Qualification | AEC-Q101 qualified - Validated for automotive electronic systems per stress-test requirements |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile gull-wing leadframe with matte tin-plated terminals solderable per J-STD-002. Cathode identified by molded band; anode is opposite end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane; completes clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Protects against high-energy transients like ISO 7637-2 Pulse 5a without degradation |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity |
| AEC-Q101 qualification | Validates reliability for automotive ECUs, ADAS sensors, and infotainment power rails |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns rise time) |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-supplied microcontrollers and CAN transceivers from load dump and alternator ripple. IC Role / Device Role / Timing Role: Shunt-clamping TVS placed between VBAT and GND, activated within <1 ns upon overvoltage detection. Use Value: Limits voltage to ≤23.2 V during 600 W surges, preventing latch-up or gate oxide damage in downstream ICs. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC inputs against ESD and inductive switching noise. IC Role / Device Role / Timing Role: Unidirectional clamp on signal line referenced to local ground, absorbing ±15 kV HBM ESD per IEC 61000-4-2. Use Value: Maintains signal integrity below 14 V normal operation while clamping transients to safe levels without loading the sensor output. |
| Consumer USB Power Input Protection | Telecom Line Card Surge Suppression |
Use Scenario: Securing 5 V USB Type-C VBUS lines in portable devices against hot-plug transients and cable-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of USB PD controller and port protection ICs. Use Value: Clamps to 23.2 V before internal 5.5 V-rated ICs reach destructive voltage thresholds, preserving USB compliance. | Use Scenario: Front-end protection of Ethernet PHY power supplies and data lines in telecom base station line cards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level TVS on 3.3 V/5 V bias rails, coordinated with gas discharge tubes and series impedance. Use Value: Provides fast-response, low-VC clamping to protect sensitive PHY ICs without compromising signal bandwidth due to low junction capacitance. |
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/VBR/VC, but SMB (DO-214AA) package; RθJA = 110 °C/W vs. 100 °C/W | Lower power density handling; less suitable for high-ambient automotive under-hood use | Select SMBG14AHE3/5B when thermal margin is critical or AEC-Q101 validation is required. |
| 1.5SMC14A | Same electrical specs, but larger SMC (DO-214AB) package; higher IPPM (31.3 A) and PPPM (1500 W) | Overqualified for 600 W needs; occupies >2× PCB area; not AEC-Q101 qualified | Choose SMBG14AHE3/5B for space-constrained, automotive-compliant designs where 600 W rating suffices. |
Compared with SMBJ14A-E3/52 and 1.5SMC14A, the SMBG14AHE3/5B delivers optimal balance of AEC-Q101 qualification, thermal performance (RθJA = 100 °C/W), and compact SMBG footprint-making it preferred for next-generation automotive and industrial modules requiring validated reliability in minimal board area.
Availability
SMBG14AHE3/5B is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, consumer USB power circuits, and telecom line card protection requiring stable component supply and full traceability.
Supply support for SMBG14AHE3/5B 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, efficiency, and application-specific validation.
The SMBG series was developed specifically for high-reliability surface-mount transient suppression in automotive and industrial environments, combining AEC-Q101 qualification, low-profile packaging, and tightly controlled clamping parameters.
FAQ
What is the maximum clamping voltage of the SMBG14AHE3/5B under rated surge conditions?
The SMBG14AHE3/5B has a maximum clamping voltage VC of 23.2 V at IPPM = 25.9 A using a 10/1000 μs waveform. This value is measured per JEDEC standards and guarantees that downstream circuitry sees no more than 23.2 V during a full 600 W transient event, making the SMBG14AHE3/5B suitable for protecting 24 V-tolerant logic and interface ICs.
Is the SMBG14AHE3/5B suitable for automotive applications?
Yes, the SMBG14AHE3/5B is AEC-Q101 qualified and manufactured with HE3 suffix indicating automotive-grade screening and process controls. It operates from –55 °C to +150 °C, meets MSL Level 1, and is validated for use in engine control units, body electronics, and ADAS sensor modules where transient immunity and long-term reliability are mandatory - confirming its suitability as a production-grade automotive TVS.
How does the SMBG14AHE3/5B differ from the SMBJ14A in terms of thermal performance?
The SMBG14AHE3/5B has a typical junction-to-ambient thermal resistance RθJA of 100 °C/W on 0.2" × 0.2" copper pads, compared to 110 °C/W for the SMBJ14A in SMB package. This 10 °C/W improvement allows the SMBG14AHE3/5B to sustain higher ambient temperatures or longer surge duty cycles without exceeding TJ = 150 °C - a critical advantage in under-hood automotive applications.
What is the polarity configuration of the SMBG14AHE3/5B and how is it marked?
The SMBG14AHE3/5B is a unidirectional TVS diode with cathode identified by a molded band on the SMBG (DO-215AA) package body. The banded end connects to the protected line, while the opposite (anode) terminal connects to ground. This polarity must be observed during PCB layout to ensure correct clamping behavior - reverse orientation would prevent proper surge conduction.
Does the SMBG14AHE3/5B meet RoHS and halogen-free requirements?
Yes, the SMBG14AHE3/5B carries the HE3 suffix, indicating it is RoHS compliant and AEC-Q101 qualified. While not explicitly halogen-free (that designation requires HM3 suffix), its molding compound meets UL 94 V-0 flammability rating, and all terminations are matte tin-plated per J-STD-002 - satisfying environmental compliance requirements for industrial and automotive markets without halogen restrictions.
SMBG14AHE3/5B 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):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 25.9A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG14AHE3/5B FAQ
1.How can I place an order for SMBG14AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG14AHE3/5B 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 SMBG14AHE3/5B reliable?
The price and inventory of SMBG14AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG14AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG14AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG14AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG14AHE3/5B?
SMBG14AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG14AHE3/5B 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 SMBG14AHE3/5B?
For technical support, including SMBG14AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG14AHE3/5B requirements.
6.How does Aetrix verify that SMBG14AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG14AHE3/5B 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 SMBG14AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG14AHE3/5B?
All SMBG14AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG14AHE3/5B, 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 SMBG14AHE3/5B part is unused and in its original packaging.
Return procedure for SMBG14AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG14AHE3/5B Tags
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