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Vishay General Semiconductor - Diodes Division SMBG14HE3/52
- Part No.:
- SMBG14HE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG14HE3/52.pdf
- Description:
- TVS DIODE 14VWM 25.8VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,188
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Product details
Overview
SMBG14HE3/52 from Vishay General Semiconductor is a uni-directional transient voltage suppressor (TVS) diode in DO-215AA (SMBG) package, designed for clamping inductive load switching surges and ESD events on power rails and signal lines. It features 14 V stand-off voltage (VWM), 15.6–17.2 V breakdown voltage (VBR) at 1 mA, 23.2 V maximum clamping voltage (VC) at 25.9 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform).
For engineers reviewing the SMBG14HE3/52 datasheet, SMBG14HE3/52 pinout, SMBG14HE3/52 application, or SMBG14HE3/52 equivalent, this device is selected for automotive-grade overvoltage protection where AEC-Q101 qualification, low incremental surge resistance, and fast response time are critical - especially in 12 V battery rail conditioning, sensor interface protection, and MOSFET gate drive line safeguarding.
Technical Context
The SMBG14HE3/52 operates as a silicon avalanche diode with glass-passivated junction, enabling sub-nanosecond response to transients. Its uni-directional polarity uses a cathode band marking and supports unidirectional clamping only - reverse conduction is blocked below VBR.
Thermal performance is defined by RθJA = 100 °C/W (junction-to-ambient, on 5.0 mm × 5.0 mm copper pads) and RθJL = 20 °C/W (junction-to-lead), supporting reliable operation up to TJ = +150 °C. It meets MSL Level 1 per J-STD-020 and passes JESD 201 Class 2 whisker testing due to its HE3 suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 14 V - Maximum continuous reverse working voltage before clamping begins; sets operating margin for 12 V nominal systems. |
| VBR (Breakdown Voltage) | 15.6–17.2 V at IT = 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 23.2 V at IPPM = 25.9 A - Peak voltage seen by protected circuit under 600 W surge; defines safe stress limit for downstream ICs. |
| PPPM (Peak Pulse Power) | 600 W (10/1000 µs waveform) - Sustains high-energy transients common in automotive load-dump and inductive kick scenarios. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Negligible standby current; avoids power loss in always-on battery-connected circuits. |
| TJ max | +150 °C - Enables use in under-hood automotive environments without thermal derating penalties. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics per stress test requirements including temperature cycling, HTRB, and ESD. |
Pinout & Package
Package: DO-215AA (SMBG), surface-mount gull-wing lead frame with matte tin-plated terminals solderable per J-STD-002 and JESD 22-B102. Cathode indicated by molded band on case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge current sink (in reverse-biased clamping mode) | Connected to protected line (e.g., 12 V rail); conducts surge current to ground when VC exceeded. |
| Cathode | Reference terminal / Clamping reference node | Connected to system ground or low-impedance return path; defines clamping reference plane for protected circuit. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness - required for engine control, ADAS, and body electronics. |
| Glass-passivated junction | Ensures stable VBR and low leakage over lifetime; resists moisture ingress and contamination in harsh environments. |
| 600 W peak pulse power (10/1000 µs) | Handles ISO 7637-2 Pulse 1, 2a, 3a/b and IEC 61000-4-5 surge waveforms without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.48) | Minimizes overvoltage stress on protected devices - critical for 16 V-tolerant microcontrollers and CAN transceivers. |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT assembly processes without pre-baking or special handling. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Uni-directional TVS clamp placed between battery input and DC-DC converter input stage. Use Value: Limits transient voltage to ≤23.2 V, preventing damage to 36 V-rated input stages while maintaining >14 V functional margin. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors exposed to cable discharge events in factory automation. IC Role / Device Role / Timing Role: Point-of-entry clamping on 4–20 mA loop or 0–10 V output line before signal conditioning amplifier. Use Value: Sub-1 ns response prevents latch-up in op-amps; 1.0 µA leakage avoids offset error in precision current loops. |
| MOSFET Gate Drive Line Protection | Automotive CAN Transceiver Protection |
Use Scenario: Shielding high-side N-channel MOSFET gates from inductive flyback during PWM switching in motor drivers. IC Role / Device Role / Timing Role: Clamp connected between gate and source, referenced to local power rail ground. Use Value: 23.2 V clamping prevents gate oxide rupture on 20 V-rated MOSFETs; low Rsurge avoids voltage overshoot during fast dI/dt events. |
Use Scenario: Secondary-level surge suppression on CAN_H/CAN_L lines in vehicle infotainment modules subjected to ESD and board-level transients. IC Role / Device Role / Timing Role: Paired SMBG14HE3/52 units (one per line) placed upstream of CAN transceiver inputs. Use Value: Matches 12 V CAN bus operating range; AEC-Q101 qualification ensures compliance with OEM EMC validation protocols. |
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), but lower PPPM (600 W vs. SMBJ's 600 W - identical rating); slightly higher VC (23.2 V vs. SMBJ14A's 23.2 V - same); identical DO-214AA (SMB) package footprint but different mechanical outline (DO-215AA vs. DO-214AA). | Not AEC-Q101 qualified; intended for commercial/industrial use only. | Select SMBG14HE3/52 when automotive qualification, MSL Level 1, or JESD 201 Class 2 whisker resistance is mandatory. |
| SMCJ14AHE3/52 | Higher PPPM (1500 W), larger DO-214AB (SMC) package, same VWM (14 V), higher VC (25.7 V at 58.3 A), same AEC-Q101 qualification. | Used where higher energy absorption is needed (e.g., alternator output lines), but requires larger PCB area and higher clamping voltage tolerance. | Choose SMBG14HE3/52 for space-constrained 12 V rail protection where 600 W suffices and tighter VC is preferred. |
Compared with SMBJ14A-E3/52 and SMCJ14AHE3/52, the SMBG14HE3/52 uniquely balances AEC-Q101 compliance, compact DO-215AA footprint, and optimized clamping performance - making it the preferred choice for cost- and space-sensitive automotive modules requiring validated reliability.
Availability
SMBG14HE3/52 is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and MOSFET gate drive safeguarding requiring stable component supply across production lifecycles.
Supply support for SMBG14HE3/52 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 developed for high-reliability surface-mount transient suppression in automotive and industrial environments, combining AEC-Q101 qualification, robust thermal design, and precise clamping performance in a low-profile gull-wing package.
FAQ
What is the clamping voltage of SMBG14HE3/52 and how is it measured?
The SMBG14HE3/52 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 per IEC 61000-4-5. This value represents the highest voltage the device allows across its terminals during a standardized surge event - directly defining the overvoltage stress imposed on protected circuitry. The SMBG14HE3/52 achieves this clamping level while maintaining low incremental surge resistance, ensuring consistent performance across production lots.
Is SMBG14HE3/52 suitable for bi-directional transient protection?
No, SMBG14HE3/52 is a uni-directional TVS diode, indicated by the "A" suffix (not "CA"). It conducts only in reverse bias above VBR and blocks forward current beyond VF ≈ 3.5 V at 50 A. For bi-directional protection, Vishay offers SMBG14CA variants - which have symmetric breakdown in both directions and no polarity marking. Using SMBG14HE3/52 in bi-directional applications risks failure during positive-going transients, so correct polarity orientation is mandatory in circuit layout.
What does the "HE3/52" suffix mean in SMBG14HE3/52?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance; "52" specifies packaging in 7″ diameter plastic tape and reel with 750 units per reel. This distinguishes it from commercial-grade "E3/52" versions (no AEC-Q101) and "HE3/5B" (3200 units per 13″ reel). The HE3 qualification confirms suitability for automotive under-hood and chassis applications where long-term reliability under thermal and mechanical stress is required.
How does SMBG14HE3/52 compare to SMAJ14A in terms of surge capability?
SMBG14HE3/52 delivers identical 600 W peak pulse power (10/1000 µs) and comparable clamping voltage (23.2 V) to SMAJ14A, but differs critically in qualification and package: SMBG14HE3/52 is AEC-Q101 qualified and housed in DO-215AA (SMBG), whereas SMAJ14A is commercial-grade in DO-214AC (SMA). The SMBG14HE3/52 also features lower thermal resistance (RθJL = 20 °C/W vs. SMAJ's ~30 °C/W), enabling better power dissipation in dense layouts - a key advantage in automotive module designs.
Can SMBG14HE3/52 be used in parallel for higher surge current handling?
Parallel connection of SMBG14HE3/52 devices is not recommended due to mismatch in VBR (15.6–17.2 V range) causing current imbalance during clamping - one device may absorb most of the surge and fail prematurely. Vishay specifies single-device operation only. For higher current needs, select a higher-rated part like SMCJ14AHE3/52 (1500 W) or verify matched-bin devices with tight VBR tolerance (±2 %), though no such binned version exists for SMBG14HE3/52 in standard distribution.
SMBG14HE3/52 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):
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG14HE3/52 FAQ
1.How can I place an order for SMBG14HE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG14HE3/52 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 SMBG14HE3/52 reliable?
The price and inventory of SMBG14HE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG14HE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG14HE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG14HE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG14HE3/52?
SMBG14HE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG14HE3/52 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 SMBG14HE3/52?
For technical support, including SMBG14HE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG14HE3/52 requirements.
6.How does Aetrix verify that SMBG14HE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG14HE3/52 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 SMBG14HE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG14HE3/52?
All SMBG14HE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG14HE3/52, 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 SMBG14HE3/52 part is unused and in its original packaging.
Return procedure for SMBG14HE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG14HE3/52 Tags
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