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Vishay General Semiconductor - Diodes Division 1.5SMC300AHE3_A/I
- Part No.:
- 1.5SMC300AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC300AHE3_A/I.pdf
- Description:
- TVS DIODE 256VWM 414VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:8,082
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Product details
Overview
1.5SMC300AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, rated for 300 V standoff voltage (VWM), 344 V clamping voltage (VC) at 3.6 A peak pulse current (IPPM), and 1500 W peak pulse power (10/1000 µs). It provides robust overvoltage protection for automotive-grade power rails and high-voltage sensor interfaces.
For engineers reviewing the 1.5SMC300AHE3_A/I datasheet, 1.5SMC300AHE3_A/I pinout, 1.5SMC300AHE3_A/I application, or 1.5SMC300AHE3_A/I equivalent, key selection criteria include its AEC-Q101 qualification, 150 °C maximum junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging a glass-passivated silicon junction to achieve fast response (<1 ns) and stable breakdown behavior under repetitive transients. Its 300 V stand-off voltage enables use in 277 V AC line-derived DC supplies and industrial 24–48 V systems with high-energy surge margins.
The 1.5SMC300AHE3_A/I delivers 1500 W peak pulse power handling per 10/1000 µs waveform at 0.01 % duty cycle, with thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-leads), supporting reliable operation under transient stress without derating below 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 300 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin above nominal 277 V AC-derived DC bus. |
| VBR (Breakdown Voltage) | 315 V min / 345 V max at 1 mA - Tight 9.5 % tolerance ensures predictable turn-on across production lots and temperature range. |
| VC (Clamping Voltage) | 414 V at IPPM = 3.6 A - Limits downstream voltage stress during 10/1000 µs surges; critical for protecting 450 V-rated MOSFETs or capacitors. |
| PPPM (Peak Pulse Power) | 1500 W - Sustains high-energy lightning-induced transients (IEC 61000-4-5 Level 4) without degradation when mounted per recommended pad layout. |
| ID (Reverse Leakage) | 1.0 µA max at 300 V - Negligible standby power loss and minimal signal integrity impact in high-impedance sensing circuits. |
| TJ max | 150 °C - Enables deployment in under-hood automotive environments and enclosed industrial enclosures without active cooling. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD; suffix HE3 denotes qualification. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, RoHS-compliant and halogen-free (HM3 variant), MSL level 1 (260 °C reflow peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Protected circuit side (anode tied to ground or low-impedance return) | Clamps positive transients toward ground; polarity must be observed to avoid forward conduction during normal operation. |
| Anode | Ground reference or low-impedance return path | Must connect to system ground plane with minimal inductance; trace inductance directly impacts clamping performance during fast transients. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Enables compliance with IEC 61000-4-5 surge immunity up to 4 kV (line-earth) in properly laid out PCBs with 8 mm² copper pads. |
| Glass passivated chip junction | Ensures long-term stability of breakdown voltage and leakage current under thermal cycling and humidity exposure. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive powertrain, body control, and ADAS modules requiring zero-failure field reliability over 15-year service life. |
| Low profile SMC package | 0.320" height enables use in space-constrained modules such as battery management systems and motor drive inverters. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without pre-baking, reducing manufacturing complexity and cost. |
Applications
| Automotive Power Rail Protection | Industrial 277 V AC-DC Converter Output |
|---|---|
Use Scenario: Protecting 12 V/24 V automotive subsystems powered from alternator or DC-DC converters subject to load dump (ISO 7637-2 Pulse 5a) and coupled transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between power rail and chassis ground to limit voltage excursions during 120 V/350 ms load dump events. Use Value: Clamps peak voltage to ≤414 V, safeguarding 450 V-rated input capacitors and gate drivers without derating or parallel staging. |
Use Scenario: Safeguarding output stage of 277 V AC-powered LED drivers or industrial SMPS where rectified DC bus reaches ~390 V peak. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across bulk capacitor to absorb switching transients and lightning-induced surges on building mains-fed equipment. Use Value: Withstands 1500 W surges while maintaining <1 µA leakage at 300 V, minimizing standby losses and enabling Class I insulation compliance. |
| High-Voltage Sensor Interface Protection | Telecom Power Feeding Circuit |
Use Scenario: Shielding analog front-end inputs of current/voltage sensors monitoring 300–400 V DC bus in solar inverters or EV chargers. IC Role / Device Role / Timing Role: Input-side TVS limiting transient energy entering precision amplifier stages, placed upstream of RC filtering networks. Use Value: Fast sub-nanosecond response prevents latch-up in op-amps; 300 V VWM avoids false triggering during normal 340 V DC bus ripple. |
Use Scenario: Protecting PoE++ (IEEE 802.3bt Type 4) or telecom central office feeding circuits exposed to induced surges on long-line distribution. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 57 V–57 V DC feed lines delivering up to 90 W to remote equipment. Use Value: 414 V clamping voltage provides >100 V margin above 290 V open-circuit feed voltage, preventing damage to downstream DC-DC controllers. |
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 | Lower peak pulse power (600 W), SMB package (smaller footprint, higher RθJA = 85 °C/W), same 300 V VWM and AEC-Q101 option available. | Better suited for space-constrained consumer or telecom modules where 1500 W surge margin is not required. | Select when board area is limited and surge threat level is ≤IEC 61000-4-5 Level 3. |
| 1.5KE300A-T | Through-hole DO-201 package, identical electrical specs (300 V VWM, 414 V VC), but no AEC-Q101 qualification and higher mounting inductance. | Applicable in legacy industrial controls or prototyping where manual assembly or socketing is preferred. | Choose only for non-automotive, non-SMT production environments where reflow compatibility is not required. |
Compared with SMBJ300A-E3/52 and 1.5KE300A-T, the 1.5SMC300AHE3_A/I uniquely combines AEC-Q101 qualification, 1500 W surge rating, and SMC package thermal performance-making it the only choice for automotive-grade, high-reliability SMT deployments demanding full IEC 61000-4-5 Level 4 compliance.
Availability
1.5SMC300AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronics, industrial power conversion, high-voltage sensor interfaces, and telecom power feeding circuits requiring stable component supply, long-term lifecycle support, and AEC-Q101 assurance.
Supply support for 1.5SMC300AHE3_A/I 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered for high-energy transient suppression in automotive, industrial, and telecom infrastructure-delivering consistent clamping performance, AEC-Q101 validation, and SMT manufacturability in the rugged SMC package.
FAQ
What is the clamping voltage of the 1.5SMC300AHE3_A/I at its rated peak pulse current?
The 1.5SMC300AHE3_A/I has a maximum clamping voltage (VC) of 414 V at its rated peak pulse current (IPPM) of 3.6 A, measured using the standardized 10/1000 µs double-exponential surge waveform. This value is guaranteed across the full operating temperature range and ensures predictable overvoltage limiting for downstream 450 V-rated components.
Is the 1.5SMC300AHE3_A/I qualified for automotive applications?
Yes, the 1.5SMC300AHE3_A/I carries the HE3 suffix, confirming full AEC-Q101 qualification per Vishay's documentation. It has passed stress tests including high-temperature operating life (HTOL), temperature cycling (TCT), and ESD (HBM ≥8 kV), making it suitable for under-hood and cabin electronics in passenger vehicles and commercial EVs.
What is the standoff voltage (VWM) and breakdown voltage (VBR) range for the 1.5SMC300AHE3_A/I?
The 1.5SMC300AHE3_A/I has a standoff voltage (VWM) of 300 V and a breakdown voltage (VBR) range of 315 V (min) to 345 V (max) at 1 mA test current. This 9.5 % VBR tolerance ensures tight clamping consistency across production batches and supports robust design margins in high-voltage DC systems.
Does the 1.5SMC300AHE3_A/I have a bidirectional variant?
No-the 1.5SMC300AHE3_A/I is strictly unidirectional, indicated by the "A" suffix. Bidirectional variants use the "CA" suffix (e.g., 1.5SMC300CA), which are electrically symmetrical and lack polarity marking. Using a unidirectional part like the 1.5SMC300AHE3_A/I in bidirectional applications will result in forward conduction during negative transients.
What package type and mounting requirements apply to the 1.5SMC300AHE3_A/I?
The 1.5SMC300AHE3_A/I uses the SMC (DO-214AB) package with matte tin-plated leads, rated MSL Level 1 (260 °C peak reflow). For optimal thermal and surge performance, it must be mounted on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, per Vishay's recommended layout in document 88303.
1.5SMC300AHE3_A/I 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/I FAQ
1.How can I place an order for 1.5SMC300AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC300AHE3_A/I 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/I reliable?
The price and inventory of 1.5SMC300AHE3_A/I 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/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC300AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC300AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC300AHE3_A/I?
1.5SMC300AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC300AHE3_A/I 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/I?
For technical support, including 1.5SMC300AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC300AHE3_A/I requirements.
6.How does Aetrix verify that 1.5SMC300AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC300AHE3_A/I 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/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC300AHE3_A/I?
All 1.5SMC300AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC300AHE3_A/I, 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/I part is unused and in its original packaging.
Return procedure for 1.5SMC300AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC300AHE3_A/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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