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Vishay General Semiconductor - Diodes Division 1.5SMC540AHE3_ALL
- Part No.:
- 1.5SMC540AHE3_ALL
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC540AHE3_ALL.pdf
- Description:
- TVS DIODE 459VWM 740VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,312
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Product details
Overview
1.5SMC540AHE3_ALL from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 540 V breakdown voltage (VBR = 513–567 V at IT = 1.0 mA), 740 V maximum clamping voltage (VC) at 2.03 A peak pulse current, 1500 W peak pulse power (10/1000 µs), and SMC (DO-214AB) surface-mount package. It is AEC-Q101 qualified and RoHS-compliant, targeting automotive power rail protection.
For engineers reviewing the 1.5SMC540AHE3_ALL datasheet, 1.5SMC540AHE3_ALL pinout, 1.5SMC540AHE3_ALL application, or 1.5SMC540AHE3_ALL equivalent, key selection criteria include standoff voltage (VWM = 459 V), clamping performance under 10/1000 µs transients, thermal resistance (RθJA = 75 °C/W), AEC-Q101 qualification status, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The 1.5SMC540AHE3_ALL operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve fast response (<1 ps) and low incremental surge resistance. Its clamping action begins at VBR = 513–567 V and limits transient voltage to ≤740 V at IPPM = 2.03 A under standardized 10/1000 µs waveform conditions.
Rated for -65 °C to +150 °C operating junction temperature, it delivers 6.5 W steady-state power dissipation at TA = 50 °C and supports 200 A non-repetitive forward surge current (8.3 ms half-sine). The device meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101 for automotive under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 513 V / 567 V at IT = 1.0 mA - defines precise avalanche onset threshold for reliable overvoltage triggering |
| VWM | 459 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 740 V at IPPM = 2.03 A (10/1000 µs) - ensures protected circuitry sees no more than 740 V during worst-case surge |
| PPPM | 1500 W - sustains high-energy transients common in automotive load-dump and ISO 7637-2 pulse 5a events |
| RθJA | 75 °C/W - requires minimum 8.0 mm × 8.0 mm copper pad per terminal for thermal management at full power |
| TJ max. | +150 °C - enables operation in under-hood environments without derating below ambient 125 °C |
| AEC-Q101 | Qualified - validated for automotive reliability including HTOL, TC, UHAST, and ESD per AEC standard |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified. Cathode indicated by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | High-side connection in unidirectional clamp configuration | Connected to protected line (e.g., battery rail); conducts during positive transients to ground |
| Anode (unmarked end) | Reference/return path | Typically tied to system ground or low-impedance return plane; completes clamping current path |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Withstands automotive load-dump surges up to ISO 7637-2 Pulse 5a without failure |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without preconditioning |
| AEC-Q101 qualification (HE3 suffix) | Validated for automotive use including temperature cycling, mechanical shock, and board-level reliability |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD, inductive switching) |
Applications
| Automotive Power Rail Protection | Industrial DC Power Input Stage |
|---|---|
Use Scenario: Protecting 48 V battery management systems and ADAS ECUs against ISO 7637-2 load-dump pulses up to 110 V and 500 ms duration. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and downstream DC/DC converter input. Use Value: Limits transient voltage to ≤740 V while absorbing 1500 W peak energy, preventing damage to sensitive PMICs and microcontrollers. |
Use Scenario: Safeguarding programmable logic controllers (PLCs) and motor drives from inductive kickback and lightning-induced surges on 24–48 V DC inputs. IC Role / Device Role / Timing Role: Primary overvoltage suppression device mounted directly at connector entry point. Use Value: Clamps transients within nanoseconds and maintains <1 µA leakage at 459 V, preserving system standby power integrity. |
| Telecom Base Station Power Supply | Renewable Energy Inverter DC Link |
Use Scenario: Shielding remote radio head (RRH) power inputs from induced surges due to nearby lightning strikes on tower-mounted equipment. IC Role / Device Role / Timing Role: Secondary surge protector cascaded after GDT or MOV, providing precise low-clamp voltage tailoring. Use Value: Delivers 740 V clamping at 2.03 A with ±5% VBR tolerance, enabling tighter design margins than generic 1.5KE series. |
Use Scenario: Protecting solar inverter DC link capacitors and IGBT gate drivers from grid-switching transients and PV array fault currents. IC Role / Device Role / Timing Role: High-voltage unidirectional TVS placed across DC bus terminals upstream of main filter capacitor. Use Value: Withstands repetitive 10/1000 µs surges at 0.01% duty cycle and operates reliably up to +150 °C junction temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ540A | Same VBR range (513–567 V) but lower PPPM (400 W); SMA package (smaller footprint, higher RθJA = 110 °C/W) | Limited to lower-energy transients; unsuitable for automotive load-dump or industrial 1500 W requirements | Select only when space-constrained and surge energy is ≤400 W; verify thermal margin with smaller pad layout |
| 1.5KE540A | Through-hole DO-201 package; identical electrical specs but no AEC-Q101 qualification; RθJA ≈ 50 °C/W on PCB | Not suitable for automated SMT production or automotive under-hood vibration environments | Use only for prototyping or legacy through-hole designs; avoid where AEC-Q101 or SMT assembly is required |
Compared with SMAJ540A and 1.5KE540A, the 1.5SMC540AHE3_ALL uniquely combines 1500 W surge capability, AEC-Q101 qualification, SMC surface-mount form factor, and 75 °C/W thermal resistance-making it the only option qualified for volume automotive SMT production with full load-dump immunity.
Availability
1.5SMC540AHE3_ALL is available at Aetrix Electronics and suitable for automotive electronics, industrial power supplies, telecom infrastructure, and renewable energy inverters requiring stable component supply, AEC-Q101 compliance, and high-reliability surge protection.
Supply support for 1.5SMC540AHE3_ALL 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 passive components with emphasis on reliability, efficiency, and automotive-grade qualification.
The 1.5SMC Series is engineered for robust transient suppression in harsh environments-specifically targeting automotive, industrial, and telecom applications where high peak power, low clamping, and AEC-Q101 validation are mandatory.
FAQ
What is the standoff voltage rating of the 1.5SMC540AHE3_ALL?
The 1.5SMC540AHE3_ALL has a maximum reverse standoff voltage (VWM) of 459 V. This is the highest DC or continuous reverse voltage the device can block without exceeding 1.0 µA leakage current at 25 °C. It ensures stable operation in 48 V and 60 V nominal systems where transient margins must be preserved during normal operation.
Is the 1.5SMC540AHE3_ALL qualified for automotive applications?
Yes, the 1.5SMC540AHE3_ALL is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's 1.5SMC Series datasheet (Doc. #88303). It undergoes stress testing including high-temperature operating life, temperature cycling, and unbiased HAST to meet automotive reliability requirements for under-hood and powertrain modules.
What is the clamping voltage of the 1.5SMC540AHE3_ALL under surge conditions?
The 1.5SMC540AHE3_ALL clamps to a maximum of 740 V when subjected to a 10/1000 µs surge waveform at IPPM = 2.03 A. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case transient events such as load dump or inductive switching.
Does the 1.5SMC540AHE3_ALL have a bidirectional variant?
No-the 1.5SMC540AHE3_ALL is strictly unidirectional. Bidirectional variants in the same voltage class use the "CA" suffix (e.g., 1.5SMC540CA), but no CA version is offered for 540 V in the 1.5SMC family. The "A" suffix denotes unidirectional construction, and the cathode band identifies polarity for correct PCB orientation.
What is the thermal resistance and recommended pad layout for the 1.5SMC540AHE3_ALL?
The 1.5SMC540AHE3_ALL has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To maintain safe junction temperature under 6.5 W steady-state dissipation, this pad size must be implemented per Vishay's recommended layout in datasheet Figure 6.
1.5SMC540AHE3_ALL 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 459V
- Voltage - Breakdown (Min):
- 513V
- Voltage - Clamping (Max) @ Ipp:
- 740V
- Current - Peak Pulse (10/1000µs):
- 2.03A
- 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)
1.5SMC540AHE3_ALL FAQ
1.How can I place an order for 1.5SMC540AHE3_ALL through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC540AHE3_ALL 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 1.5SMC540AHE3_ALL reliable?
The price and inventory of 1.5SMC540AHE3_ALL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC540AHE3_ALL is usually 5 days.
3.What payment methods are accepted for 1.5SMC540AHE3_ALL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC540AHE3_ALL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC540AHE3_ALL?
1.5SMC540AHE3_ALL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC540AHE3_ALL 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 1.5SMC540AHE3_ALL?
For technical support, including 1.5SMC540AHE3_ALL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC540AHE3_ALL requirements.
6.How does Aetrix verify that 1.5SMC540AHE3_ALL is sourced from the original manufacturer or authorized distributors?
All 1.5SMC540AHE3_ALL 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 1.5SMC540AHE3_ALL meets industry standards.
7.What is the process for return or replacement of 1.5SMC540AHE3_ALL?
All 1.5SMC540AHE3_ALL units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC540AHE3_ALL, 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 1.5SMC540AHE3_ALL part is unused and in its original packaging.
Return procedure for 1.5SMC540AHE3_ALL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC540AHE3_ALL Tags
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