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Vishay General Semiconductor - Diodes Division 1.5SMC300AHE3_A/H
- Part No.:
- 1.5SMC300AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC300AHE3_A/H.pdf
- Description:
- TVS DIODE 256VWM 414VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:4,764
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Product details
Overview
1.5SMC300AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 300 V standoff voltage (VWM), 344 V clamping voltage (VC) at 3.6 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive power supply rails and industrial sensor interfaces.
For engineers reviewing the 1.5SMC300AHE3_A/H datasheet, 1.5SMC300AHE3_A/H pinout, 1.5SMC300AHE3_A/H application, or 1.5SMC300AHE3_A/H equivalent, key selection criteria include unidirectional polarity, SMC (DO-214AB) package compatibility, AEC-Q101 qualification status, and clamping performance under repetitive lightning-surge transients per IEC 61000-4-5.
Technical Context
This device operates as a voltage-clamping protector: when reverse-biased voltage exceeds its breakdown threshold (VBR = 285–315 V at 1 mA), it avalanches to divert transient energy away from downstream circuitry. Its low incremental surge resistance ensures minimal voltage overshoot during fast-rising transients (e.g., ESD or inductive switching).
Thermally, it sustains operation up to 150 °C junction temperature with RθJA = 75 °C/W and RθJL = 15 °C/W, enabling reliable performance on standard 8.0 mm × 8.0 mm copper pads. The matte tin-plated leads meet J-STD-002 solderability and JESD22-B102 whisker resistance Class 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 300 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC/AC bias margin. |
| VBR (Breakdown) | 285–315 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping) | 414 V at IPPM = 3.6 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; critical for MOSFET/IC survivability. |
| PPPM | 1500 W - Surge energy-handling capacity under standardized 10/1000 µs waveform; supports IEC 61000-4-5 Level 4 compliance. |
| TJ max | 150 °C - Maximum junction temperature; enables use in under-hood automotive environments and industrial enclosures. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint; compatible with automated pick-and-place and reflow. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads; cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased anode connection point | Connected to protected line; conducts avalanche current during overvoltage to shunt energy to ground. |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return plane; completes clamping current loop. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables robust protection against lightning-induced surges (IEC 61000-4-5) without derating in compact SMC footprint. |
| AEC-Q101 qualification | Validated for automotive powertrain and body electronics where long-term reliability under thermal stress is mandatory. |
| Glass passivated junction | Improves long-term stability and leakage control across temperature (-65 °C to +150 °C operating range). |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast transients (<1 ns response), preserving sensitive downstream ICs. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without moisture-related popcorning or delamination. |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load-dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp positive-going surges above 300 V. Use Value: Limits peak voltage to 414 V during 3.6 A transient, preventing damage to LDOs, microcontrollers, and CAN transceivers. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation systems exposed to motor-switching noise. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to absorb inductive kickback from solenoids or relays. Use Value: Clamps 10/1000 µs surges within 1 ns, maintaining signal integrity of 0–5 V or 4–20 mA sensor outputs. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding Ethernet PHY power pins and auxiliary rails in base station line cards from lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on 3.3 V or 5 V auxiliary supplies to suppress common-mode transients coupled via transformer windings. Use Value: Withstands 1500 W pulses while maintaining <1 µA leakage at 300 V, avoiding false resets or brownouts. |
Use Scenario: Guarding BLDC motor driver ICs in washing machines and HVAC systems against back-EMF spikes during commutation. IC Role / Device Role / Timing Role: Unidirectional TVS across high-side FET drain-source to clamp inductive flyback voltage. Use Value: Delivers 414 V clamping at 3.6 A, keeping MOSFET VDS below breakdown limit during rapid PWM switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ300A-E3/52 | Same VWM (300 V) and VC (414 V), but lower PPPM (600 W); SMB package (smaller footprint, lower thermal mass). | Lower surge rating limits use to non-automotive consumer or light industrial applications with reduced threat levels. | Select when board space is constrained and surge exposure is limited to IEC 61000-4-4 (EFT), not full lightning-level IEC 61000-4-5. |
| 1.5KE300A | Through-hole DO-201 package; identical electrical specs (VWM = 300 V, VC = 414 V, PPPM = 1500 W), no AEC-Q101 qualification. | Lacks automotive qualification and surface-mount compatibility; suited for prototyping or legacy through-hole designs. | Choose only for manual assembly or cost-sensitive non-automotive applications where AEC-Q101 is not required. |
Compared with SMBJ300A-E3/52 and 1.5KE300A, the 1.5SMC300AHE3_A/H uniquely combines 1500 W surge capability, AEC-Q101 qualification, and SMC surface-mount packaging - making it the sole option for production automotive modules requiring both high-energy clamping and automotive-grade reliability in automated manufacturing.
Availability
1.5SMC300AHE3_A/H is available at Aetrix Electronics and suitable for automotive power distribution units, industrial PLC I/O modules, telecom line card protection, and consumer appliance motor drives requiring stable component supply across extended product lifecycles.
Supply support for 1.5SMC300AHE3_A/H 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The 1.5SMC Series was engineered for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where robustness against lightning, ESD, and inductive switching is mission-critical.
FAQ
What is the clamping voltage of the 1.5SMC300AHE3_A/H under a 10/1000 µs surge?
The 1.5SMC300AHE3_A/H has a maximum clamping voltage (VC) of 414 V at a peak pulse current (IPPM) of 3.6 A with a 10/1000 µs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream components like MOSFETs or microcontrollers remain within safe operating limits.
Is the 1.5SMC300AHE3_A/H qualified for automotive applications?
Yes, the 1.5SMC300AHE3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, validating its suitability for automotive powertrain, body control, and infotainment systems where long-term reliability under thermal and electrical stress is required.
What does the "A/H" suffix mean in 1.5SMC300AHE3_A/H?
The "A/H" suffix in 1.5SMC300AHE3_A/H indicates packaging configuration: "A" denotes AEC-Q101 qualification level for this voltage grade (per Vishay's note that _A applies to 1.5SMC6.8A–1.5SMC220A, and _B applies to higher voltages), while "H" specifies 7-inch diameter plastic tape-and-reel delivery with 850 units per reel - a standard format for automated SMT assembly lines.
How does the 1.5SMC300AHE3_A/H differ from bidirectional variants like 1.5SMC300CA?
The 1.5SMC300AHE3_A/H is unidirectional, meaning it protects against positive-going transients only (cathode-to-anode conduction), with polarity marked by a band. In contrast, 1.5SMC300CA is bidirectional and symmetrical - suppressing surges of either polarity - making it suitable for AC lines or differential data paths. The 1.5SMC300AHE3_A/H is selected when polarity is known and ground-referenced DC protection is needed.
What is the thermal resistance of the 1.5SMC300AHE3_A/H, and how does it affect layout?
The 1.5SMC300AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-leads resistance (RθJL) of 15 °C/W. To maintain safe junction temperatures, PCB layout must use minimum recommended 8.0 mm × 8.0 mm copper pads per terminal - undersized pads increase thermal impedance and risk exceeding the 150 °C max TJ during repetitive surges.
1.5SMC300AHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 256V
- Voltage - Breakdown (Min):
- 285V
- Voltage - Clamping (Max) @ Ipp:
- 414V
- Current - Peak Pulse (10/1000µs):
- 3.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC300AHE3_A/H FAQ
1.How can I place an order for 1.5SMC300AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC300AHE3_A/H 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 1.5SMC300AHE3_A/H reliable?
The price and inventory of 1.5SMC300AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC300AHE3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC300AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC300AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC300AHE3_A/H?
1.5SMC300AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC300AHE3_A/H 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 1.5SMC300AHE3_A/H?
For technical support, including 1.5SMC300AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC300AHE3_A/H requirements.
6.How does Aetrix verify that 1.5SMC300AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC300AHE3_A/H 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 1.5SMC300AHE3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC300AHE3_A/H?
All 1.5SMC300AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC300AHE3_A/H, 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 1.5SMC300AHE3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC300AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC300AHE3_A/H Tags
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