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Vishay General Semiconductor - Diodes Division 1.5SMC540AHM3_A/I
- Part No.:
- 1.5SMC540AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC540AHM3_A/I.pdf
- Description:
- TVS DIODE 459VWM 740VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,727
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Product details
Overview
1.5SMC540AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, rated for 540 V breakdown voltage (VBR = 513–567 V at IT = 1 mA), 459 V stand-off voltage (VWM), and 1500 W peak pulse power (10/1000 μs). It clamps transients to ≤740 V at 2.03 A peak pulse current and is halogen-free, RoHS-compliant, and AEC-Q101 qualified - designed for automotive-level surge protection on high-voltage DC bus lines.
For engineers reviewing the 1.5SMC540AHM3_A/I datasheet, 1.5SMC540AHM3_A/I pinout, 1.5SMC540AHM3_A/I application, or 1.5SMC540AHM3_A/I equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under standardized surge waveforms, and precise mechanical mounting requirements for reliable PCB integration in harsh-environment systems.
Technical Context
This device operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response (<1 ns) to transient overvoltages and low incremental surge resistance for stable clamping during repetitive 10/1000 μs surges at 0.01% duty cycle. Its VBR tolerance is ±5%, and temperature coefficient of VBR is +0.110%/°C - critical for high-temperature automotive operation up to TJ = 150 °C.
Mounted on 8.0 mm × 8.0 mm copper pads per terminal, it achieves RθJA = 75 °C/W and RθJL = 15 °C/W, supporting sustained 6.5 W power dissipation at TA = 50 °C. Reverse leakage is limited to 1.0 μA at VWM = 459 V, ensuring minimal standby power loss in high-impedance monitoring circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 513 V / 567 V at IT = 1 mA - defines guaranteed avalanche initiation range under standardized test conditions |
| VWM | 459 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 740 V at IPPM = 2.03 A - clamping voltage during full 1500 W surge, directly limiting downstream component stress |
| PPPM | 1500 W (10/1000 μs waveform) - peak transient energy handling capacity for lightning and inductive switching events |
| IFSM | 200 A (8.3 ms half-sine) - surge current rating for unidirectional forward conduction during fault conditions |
| TJ max. | +150 °C - maximum junction temperature enabling use in under-hood automotive environments |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C reflow peak), polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection point for unidirectional TVS operation | Connected to protected line; reverse-biased during normal operation; conducts when line voltage exceeds VWM |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return plane; completes clamping path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC J-STD-20E; no brominated flame retardants or chlorine-based compounds |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV line-earth, 2 kV line-line) surges without degradation when properly mounted |
| Low incremental surge resistance | Ensures tight VC control across IPPM range - critical for protecting sensitive gate drivers and MCU I/O pins |
| Glass-passivated junction | Provides stable leakage characteristics and long-term reliability under thermal cycling and humidity exposure |
Applications
| Automotive Power Supply Protection | Industrial DC Bus Surge Suppression |
|---|---|
Use Scenario: Protecting 48 V and 60 V battery-fed ECUs against load dump and alternator transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp spikes above 459 V. Use Value: Limits peak voltage to ≤740 V during 1500 W surges, preventing damage to buck controllers and CAN transceivers downstream. |
Use Scenario: Safeguarding motor drive inverters against IGBT turn-off spikes and regenerative energy feedback. IC Role / Device Role / Timing Role: Mounted across DC link capacitors to absorb inductive kickback from 400–800 V bus systems. Use Value: Clamps transients within nanoseconds while sustaining 200 A non-repetitive forward surge capability during fault clearing. |
| Telecom Rectifier Output Protection | Renewable Energy Charge Controller Input |
Use Scenario: Shielding PoE-powered equipment inputs from induced surges on outdoor telecom lines. IC Role / Device Role / Timing Role: Front-end TVS on rectified -48 V DC supply rails exposed to lightning-induced common-mode transients. Use Value: Maintains <1 μA leakage at 459 V, minimizing standby power loss while delivering 1500 W transient immunity. |
Use Scenario: Protecting solar charge controller inputs connected to ungrounded PV arrays subject to rapid voltage transients. IC Role / Device Role / Timing Role: Unidirectional suppressor installed between PV+ and chassis ground to shunt negative-going surges. Use Value: Operates reliably from -65 °C to +150 °C ambient, meeting extended temperature requirements for rooftop installations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ540A | Same VBR range (513–567 V), but SMB package (smaller footprint, lower PPPM = 600 W) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or IEC 61000-4-5 Level 4 | Select only when board space is constrained and surge energy does not exceed 600 W |
| 1.5KE540A | Through-hole DO-201 package, identical VBR/VWM/VC, but higher RθJA (100 °C/W) and no AEC-Q101 qualification | Not suitable for automated SMT assembly or automotive under-hood environments requiring vibration resistance | Choose for prototyping or legacy through-hole designs where reflow compatibility is not required |
Compared with SMBJ540A and 1.5KE540A, the 1.5SMC540AHM3_A/I uniquely combines AEC-Q101 qualification, SMC package robustness, 1500 W surge rating, and halogen-free compliance - making it the only option qualified for production automotive and industrial SMT applications demanding full IEC/ISO compliance.
Availability
1.5SMC540AHM3_A/I is available at Aetrix Electronics and suitable for automotive ECU protection, industrial DC bus surge suppression, telecom rectifier output safeguarding, and renewable energy charge controller input hardening requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC540AHM3_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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The 1.5SMC Series was engineered specifically for high-power, surface-mount transient suppression in harsh environments - emphasizing AEC-Q101 qualification, low-profile packaging, and repeatable clamping performance under standardized surge waveforms.
FAQ
What is the maximum clamping voltage of the 1.5SMC540AHM3_A/I under a 1500 W surge?
The 1.5SMC540AHM3_A/I clamps to a maximum of 740 V when subjected to its rated 1500 W peak pulse power (10/1000 μs waveform) at IPPM = 2.03 A. This value is measured per Figure 1 in Vishay Document 88303 and represents the upper limit of voltage seen by downstream circuitry during worst-case transient events.
Is the 1.5SMC540AHM3_A/I suitable for automotive applications?
Yes, the 1.5SMC540AHM3_A/I is AEC-Q101 qualified (suffix HM3_B denotes automotive grade), tested for temperature cycling, highly accelerated life testing, and ESD per JESD22 standards. Its 1500 W surge rating, -65 °C to +150 °C operating range, and halogen-free construction meet stringent automotive under-hood requirements.
What is the meaning of the "HM3_A/I" suffix in 1.5SMC540AHM3_A/I?
In 1.5SMC540AHM3_A/I, "HM3" indicates halogen-free, RoHS-compliant, and AEC-Q101 qualified construction; "A" denotes the revision level (per ordering table note 2); and "I" specifies 3500-unit tape-and-reel packaging on 13-inch diameter reels - distinct from "H" (850-unit reels on 7-inch diameter).
How does the 1.5SMC540AHM3_A/I compare to bidirectional TVS diodes in the same series?
The 1.5SMC540AHM3_A/I is unidirectional and intended for DC line protection where polarity is fixed. Bidirectional variants (e.g., 1.5SMC540CA) have symmetric clamping in both directions but lower VBR range (max 220 V) - so no 540 V bidirectional part exists. For AC or floating lines, separate design selection is required.
What PCB layout guidance applies to the 1.5SMC540AHM3_A/I for optimal thermal performance?
To achieve rated 6.5 W power dissipation and 75 °C/W thermal resistance, Vishay specifies mounting the 1.5SMC540AHM3_A/I on minimum 8.0 mm × 8.0 mm copper pads per terminal. Use thermal vias under pads and connect to internal ground planes to maintain junction temperature below 150 °C at TA = 50 °C.
1.5SMC540AHM3_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:
- Discontinued at Digi-Key
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC540AHM3_A/I FAQ
1.How can I place an order for 1.5SMC540AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC540AHM3_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 1.5SMC540AHM3_A/I reliable?
The price and inventory of 1.5SMC540AHM3_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 1.5SMC540AHM3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC540AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC540AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC540AHM3_A/I?
1.5SMC540AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC540AHM3_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 1.5SMC540AHM3_A/I?
For technical support, including 1.5SMC540AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC540AHM3_A/I requirements.
6.How does Aetrix verify that 1.5SMC540AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC540AHM3_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 1.5SMC540AHM3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC540AHM3_A/I?
All 1.5SMC540AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC540AHM3_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 1.5SMC540AHM3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC540AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC540AHM3_A/I Tags
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