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Vishay General Semiconductor - Diodes Division 1.5SMC540A-E3/57T
- Part No.:
- 1.5SMC540A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC540A-E3/57T.pdf
- Description:
- TVS DIODE 459VWM 740VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:4,123
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Product details
Overview
1.5SMC540A-E3/57T 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 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. It is used to protect automotive power modules, industrial DC bus lines, and telecom rectifier outputs against lightning-induced transients.
For engineers reviewing the 1.5SMC540A-E3/57T datasheet, 1.5SMC540A-E3/57T pinout, 1.5SMC540A-E3/57T application, or 1.5SMC540A-E3/57T equivalent, key selection criteria include standoff voltage (VWM = 459 V), clamping performance under 10/1000 µs surges, thermal resistance (RθJA = 75 °C/W), AEC-Q101 qualification status, and SMC (DO-214AB) package compatibility with automated SMT placement.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM = 459 V, it avalanches to limit transient energy by diverting current to ground. Its glass-passivated junction ensures stable breakdown and low leakage (<1 µA at VWM), while its 1500 W peak pulse rating supports repetitive 0.01% duty cycle surges per JEDEC standards.
The device is optimized for high-voltage DC systems - its 540 V VBR range targets applications where system operating voltages exceed 400 V, such as EV on-board chargers, solar string inverters, and 48 V–600 V industrial power supplies. It meets MSL Level 1 (260 °C reflow) and offers matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 513 V / 567 V - Ensures reliable avalanche initiation above 459 V operating voltage without premature conduction |
| VWM | 459 V - Maximum continuous reverse working voltage; defines upper limit of normal operation before clamping |
| VC @ IPPM | 740 V at 2.03 A - Clamping voltage during 10/1000 µs surge; determines protected circuit's maximum transient exposure |
| PPPM | 1500 W - Peak pulse power handling capability; enables robust protection against IEC 61000-4-5 Level 4 surges |
| IPPM | 2.03 A - Peak pulse current corresponding to 1500 W at 740 V; used for PCB trace and fuse sizing |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and high-ambient industrial environments |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient; informs heatsinking requirements on standard 8 mm × 8 mm copper pads |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads. Cathode indicated by band; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; tied to system ground or low-side reference | Provides return path for surge current; must connect to lowest-impedance ground plane for effective clamping |
| Cathode | Protected line connection; connected to input/power rail requiring surge suppression | Reverse-biased during normal operation; avalanches to clamp when VIN > VWM, shunting surge to anode/ground |
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 (open-circuit) in high-voltage DC systems |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients, improving protection margin for downstream MOSFETs and controllers |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage current over temperature and lifetime, critical for automotive AEC-Q101 reliability |
| MSL Level 1 (260 °C) | Supports standard lead-free reflow profiles without popcorn cracking or delamination, enabling high-yield automated assembly |
| AEC-Q101 qualified (via HM3_B/H variant) | Validated for automotive powertrain and chassis applications; includes stress testing for temperature cycling, HTRB, and ESD |
Applications
| Automotive On-Board Charger (OBC) Input Stage | Solar Photovoltaic String Inverter DC Link |
|---|---|
Use Scenario: Protects AC/DC front-end rectifiers and PFC stages from grid-side lightning surges and load dump transients. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed across DC bus input, clamping transients before they reach boost converters and gate drivers. Use Value: Withstands 1500 W surges at 740 V clamp, preserving IGBT module integrity and meeting ISO 7637-2 Pulse 5a requirements. |
Use Scenario: Shields high-voltage DC strings (up to 1500 V) from induced surges during thunderstorms or switching events in utility-scale PV farms. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted at string combiner box input, providing first-line defense before MPPT controller inputs. Use Value: 459 V VWM allows safe operation in 1000 V nominal systems; 740 V clamping limits stress on downstream SiC MOSFETs and isolation amplifiers. |
| Industrial 480 V AC Motor Drive DC Bus | Telecom Rectifier Output Protection |
Use Scenario: Guards VFD DC link capacitors and brake choppers against regeneration spikes and contactor bounce transients. IC Role / Device Role / Timing Role: Parallel-connected TVS across bulk capacitor bank, activated within <1 ns to suppress >1 kV spikes. Use Value: Low Rsurge and fast response prevent capacitor overvoltage failure; 150 °C rating supports enclosed cabinet operation. |
Use Scenario: Safeguards -48 V telecom rectifier outputs from backfeed surges, hot-swap transients, and battery backup switching events. IC Role / Device Role / Timing Role: Unidirectional TVS installed between output rail and chassis ground, referenced to system common. Use Value: 459 V standoff avoids false triggering during normal rectifier ripple; 75 °C/W RθJA enables compact layout without forced air cooling. |
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-E3/52 | Lower peak power (600 W), same VBR range (513–567 V), SMB package (smaller footprint, higher RθJA = 110 °C/W) | Suitable for space-constrained low-energy circuits; not recommended for IEC 61000-4-5 Level 4 or automotive load dump | Select only if system surge energy ≤ 600 W and thermal budget permits higher junction temperature rise. |
| 1.5KE540A | Same electrical specs but axial-leaded DO-201AD package; no RoHS-compliant suffix variants; lower surge repetition capability | Used in legacy through-hole designs or prototyping; incompatible with automated SMT lines and high-reliability automotive programs | Choose only for manual assembly, cost-sensitive non-automotive applications, or when board rework requires axial components. |
Compared with 1.5SMC540A-E3/57T, SMBJ540A-E3/52 trades surge robustness for board area savings, while 1.5KE540A sacrifices SMT compatibility and AEC-Q101 support for legacy manufacturability - making 1.5SMC540A-E3/57T the optimal choice for high-reliability, high-power, automated production of automotive and industrial HV DC systems.
Availability
1.5SMC540A-E3/57T is available at Aetrix Electronics and suitable for automotive on-board chargers, solar string inverters, industrial motor drives, and telecom rectifier systems requiring stable component supply across extended product lifecycles.
Supply support for 1.5SMC540A-E3/57T 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, power handling, and automotive-grade qualification.
The 1.5SMC Series was developed to deliver high-power, surface-mount transient protection for demanding automotive, industrial, and renewable energy applications - prioritizing AEC-Q101 compliance, low-profile packaging, and consistent clamping performance across temperature.
FAQ
What is the standoff voltage rating of the 1.5SMC540A-E3/57T?
The 1.5SMC540A-E3/57T has a maximum reverse standoff voltage (VWM) of 459 V. This value defines the highest continuous DC or RMS voltage the device can block in normal operation without entering avalanche conduction. It is selected to provide sufficient margin above typical 400–450 V DC bus voltages while ensuring reliable clamping onset during transients exceeding this threshold.
Is the 1.5SMC540A-E3/57T AEC-Q101 qualified?
The base 1.5SMC540A-E3/57T is RoHS-compliant and commercial-grade. However, the AEC-Q101 qualified version is available as 1.5SMC540AHM3_B/H or 1.5SMC540AHM3_B/I - denoted by the HM3_B suffix and specific reel packaging codes. These variants undergo full automotive stress testing including temperature cycling, HTRB, and ESD per AEC-Q101 Rev D.
What does the "E3/57T" suffix indicate in 1.5SMC540A-E3/57T?
The "E3" suffix indicates RoHS-compliant, commercial-grade construction with matte tin-plated leads. The "57T" denotes packaging in a 7-inch diameter plastic tape-and-reel format containing 850 units per reel - optimized for high-speed pick-and-place SMT assembly. This ordering code confirms compliance with J-STD-002 solderability and JESD 22-B102 whisker resistance standards.
How does the 1.5SMC540A-E3/57T compare to bidirectional TVS diodes like 1.5SMC540CA?
The 1.5SMC540A-E3/57T is unidirectional and intended for DC line protection where polarity is fixed, offering tighter leakage control and higher surge current capability in one direction. In contrast, 1.5SMC540CA is bidirectional, suited for AC-coupled or polarity-agnostic signal lines but rated only up to 220 V VWM. They are not interchangeable due to fundamental polarity and voltage-range differences.
What is the thermal resistance and recommended pad layout for the 1.5SMC540A-E3/57T?
The 1.5SMC540A-E3/57T 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 achieve this rating, use minimum recommended SMC (DO-214AB) pad dimensions per Vishay spec 88303 - including 0.126" (3.20 mm) pad length and 0.060" (1.52 mm) pad width - and ensure solid thermal vias beneath pads if ambient exceeds 70 °C.
1.5SMC540A-E3/57T 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-E3/57T FAQ
1.How can I place an order for 1.5SMC540A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC540A-E3/57T 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-E3/57T reliable?
The price and inventory of 1.5SMC540A-E3/57T 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-E3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC540A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC540A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC540A-E3/57T?
1.5SMC540A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC540A-E3/57T 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-E3/57T?
For technical support, including 1.5SMC540A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC540A-E3/57T requirements.
6.How does Aetrix verify that 1.5SMC540A-E3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC540A-E3/57T 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-E3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC540A-E3/57T?
All 1.5SMC540A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC540A-E3/57T, 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-E3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC540A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC540A-E3/57T Tags
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