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Vishay General Semiconductor - Diodes Division 1.5SMC540A-E3/9AT
- Part No.:
- 1.5SMC540A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC540A-E3/9AT.pdf
- Description:
- TVS DIODE 459VWM 740VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:7,761
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Product details
Overview
1.5SMC540A-E3/9AT 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 540 V breakdown voltage (VBR min = 513 V, max = 567 V), 1500 W peak pulse power (10/1000 µs), clamping voltage of 740 V at 2.03 A, and operates across -65 °C to +150 °C junction temperature range - deployed in automotive power supply rails and industrial DC bus protection.
For engineers reviewing the 1.5SMC540A-E3/9AT datasheet, 1.5SMC540A-E3/9AT pinout, 1.5SMC540A-E3/9AT application, or 1.5SMC540A-E3/9AT equivalent, key selection criteria include unidirectional polarity, SMC (DO-214AB) package compatibility, 459 V stand-off voltage (VWM), <1 µA reverse leakage at VWM, and AEC-Q101 qualification readiness via HE3/HM3 variants.
Technical Context
This TVS diode operates as a clamping device that enters avalanche conduction when transient voltage exceeds its breakdown threshold (513–567 V), limiting downstream voltage to ≤740 V under 2.03 A peak pulse current. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance.
Designed for 10/1000 µs waveform compliance, it delivers 1500 W peak pulse power with 0.01% duty cycle repeatability and meets MSL Level 1 per J-STD-020 (260 °C reflow peak). Thermal resistance is 75 °C/W (junction-to-ambient) on standard 8.0 mm × 8.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 513 V / 567 V - guaranteed avalanche initiation range under 1 mA test current; defines minimum overvoltage threshold before clamping begins |
| VWM | 459 V - maximum continuous reverse operating voltage; system must stay below this to avoid leakage or premature conduction |
| VC @ IPPM | 740 V at 2.03 A - clamped voltage during full 1500 W surge; determines worst-case stress on protected IC or MOSFET |
| PPPM | 1500 W - peak pulse power handling with 10/1000 µs waveform; validates robustness against lightning-induced transients |
| IFSM | 200 A - non-repetitive forward surge rating (8.3 ms half-sine); supports unidirectional placement in DC power paths |
| TJ Range | -65 °C to +150 °C - extended thermal operation enables use in under-hood automotive and industrial environments |
| Package | SMC (DO-214AB) - standardized surface-mount outline with cathode band marking; compatible with automated pick-and-place |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, footprint dimensions 7.11 mm × 6.22 mm × 2.62 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to lower-potential side of protected line; reverse-biased during normal operation |
| Cathode | Forward current exit / surge sink | Marked with band; tied to higher-potential rail or ground return path to shunt transient energy |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables protection against severe lightning surges (IEC 61000-4-5 Level 4) on 48 V–400 V DC systems without derating |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage (<1 µA at VWM) across temperature and lifetime |
| MSL Level 1 rating | Supports single-reflow assembly at 260 °C peak without moisture-induced damage or parametric shift |
| AEC-Q101 qualification path | HE3/HM3 variants available for automotive applications; this E3/9AT variant shares identical die and construction |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., inductive switch-off), improving clamping precision |
Applications
| Automotive Power Rail Protection | Industrial DC Bus Clamping |
|---|---|
Use Scenario: Protecting 48 V battery management system (BMS) input stages from load-dump transients up to 60 V and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery+ and ground to clamp positive-going surges before they reach DC-DC converters or microcontrollers. Use Value: Limits voltage to ≤740 V during 1500 W events, preventing gate oxide rupture in downstream 600 V MOSFETs and ensuring ASIL-B functional safety compliance. |
Use Scenario: Safeguarding PLC analog input modules connected to 24 V or 48 V field wiring exposed to motor switching noise and ESD. IC Role / Device Role / Timing Role: Standoff-rated TVS on signal/power rail inputs to absorb repetitive 10/1000 µs transients induced by relay contact bounce or solenoid de-energization. Use Value: Maintains 459 V VWM margin above nominal rail while delivering sub-1 µA leakage - preserving measurement accuracy and reducing self-heating in sealed enclosures. |
| Telecom Power Supply Input | Renewable Energy Inverter DC Link |
Use Scenario: Front-end surge suppression for PoE-powered equipment (IEEE 802.3bt) subjected to induced surges on Ethernet cabling and auxiliary 48 V DC feeds. IC Role / Device Role / Timing Role: Primary clamping device on 48 V input rail, coordinated with upstream fuse and downstream LC filter to meet UL 60950-1 transient immunity requirements. Use Value: Fast response time and 740 V clamping ensure PoE controller ICs (e.g., TPS2375) remain within absolute maximum ratings during combined-mode surges. |
Use Scenario: Overvoltage protection on photovoltaic string combiner box outputs feeding central inverters, where lightning-induced surges exceed 1 kV. IC Role / Device Role / Timing Role: High-voltage unidirectional TVS installed across DC+ and DC− terminals to limit transient excursions on 600–1000 V DC links. Use Value: 540 V VBR and 459 V VWM enable direct integration into 800 V-class solar arrays without series stacking, reducing BOM count and layout area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ540A | Lower peak power (600 W), same VBR range (513–567 V), SMB package (smaller footprint, lower thermal mass) | Not suitable for 1500 W lightning-level surges; limited to lower-energy IEC 61000-4-4 events | Select only if system-level testing confirms 600 W sufficiency and space constraints prohibit SMC mounting |
| 1.5KE540A | Same electrical specs but axial-leaded DO-201AD package; higher RθJA (~100 °C/W), no RoHS-compliant E3 suffix option | Requires through-hole assembly; incompatible with automated SMT lines and high-density PCB layouts | Choose only for legacy repair, prototyping, or low-volume manual assembly where reflow compatibility is not required |
Compared with SMBJ540A and 1.5KE540A, the 1.5SMC540A-E3/9AT uniquely combines 1500 W surge capacity, SMC surface-mount compatibility, RoHS-compliant matte tin terminations, and production-ready tape-and-reel packaging (3500 pcs/reel), making it optimal for high-reliability automotive and industrial SMT production.
Availability
1.5SMC540A-E3/9AT is available at Aetrix Electronics and suitable for automotive battery management, industrial PLC I/O modules, telecom power supplies, and renewable energy inverter designs requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for 1.5SMC540A-E3/9AT 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, thermal performance, and automotive-grade qualification.
The 1.5SMC Series was engineered specifically for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where compact size, repeatable clamping, and AEC-Q101 readiness are mandatory.
FAQ
What is the breakdown voltage tolerance of the 1.5SMC540A-E3/9AT?
The 1.5SMC540A-E3/9AT has a specified breakdown voltage (VBR) range of 513 V to 567 V at 1 mA test current, representing ±5% tolerance around the nominal 540 V rating. This tight distribution ensures predictable clamping onset across production lots and supports reliable system-level surge margin calculations without additional derating.
Is the 1.5SMC540A-E3/9AT RoHS-compliant and halogen-free?
Yes, the 1.5SMC540A-E3/9AT carries the "E3" suffix, indicating full RoHS compliance per EU Directive 2011/65/EU and exemption 7a. It is not halogen-free; for halogen-free and RoHS-compliant versions, specify the "M3" suffix (e.g., 1.5SMC540A-M3/9AT), which meets JEDEC JS709A requirements.
Can the 1.5SMC540A-E3/9AT be used in bidirectional configurations?
No - the 1.5SMC540A-E3/9AT is strictly unidirectional, as indicated by the "A" suffix and cathode band marking. For bidirectional operation at comparable voltage ratings, select the "CA" variant (e.g., 1.5SMC540CA), which provides symmetrical clamping in both polarities and omits the polarity band.
What is the maximum clamping voltage of the 1.5SMC540A-E3/9AT under surge conditions?
The 1.5SMC540A-E3/9AT exhibits a maximum clamping voltage (VC) of 740 V when subjected to its rated peak pulse current of 2.03 A (10/1000 µs waveform). This value is measured per Fig. 1 in Vishay document 88303 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Does the 1.5SMC540A-E3/9AT meet AEC-Q101 qualification?
The base 1.5SMC540A-E3/9AT is not AEC-Q101 qualified; however, Vishay offers functionally identical AEC-Q101 qualified versions under the "HE3" (RoHS-compliant) and "HM3" (halogen-free + RoHS) ordering codes - e.g., 1.5SMC540AHE3_B/I. These share the same die, package, and electrical specs but undergo additional automotive stress testing.
1.5SMC540A-E3/9AT 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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC540A-E3/9AT FAQ
1.How can I place an order for 1.5SMC540A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC540A-E3/9AT 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 1.5SMC540A-E3/9AT reliable?
The price and inventory of 1.5SMC540A-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC540A-E3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC540A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC540A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC540A-E3/9AT?
1.5SMC540A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC540A-E3/9AT 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 1.5SMC540A-E3/9AT?
For technical support, including 1.5SMC540A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC540A-E3/9AT requirements.
6.How does Aetrix verify that 1.5SMC540A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC540A-E3/9AT 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 1.5SMC540A-E3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC540A-E3/9AT?
All 1.5SMC540A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC540A-E3/9AT, 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 1.5SMC540A-E3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC540A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC540A-E3/9AT Tags
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