My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC540AHE3_A/I
- Part No.:
- 1.5SMC540AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC540AHE3_A/I.pdf
- Description:
- TVS DIODE 459VWM 740VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:5,398
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC540AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power rails and signal lines. It features a 540 V breakdown voltage (VBR = 513–567 V at IT = 1.0 mA), 459 V stand-off voltage (VWM), clamps to ≤740 V at 2.03 A peak pulse current (IPPM), and delivers 1500 W peak pulse power with a 10/1000 µs waveform - used in automotive power supply input stages and industrial DC bus protection.
For engineers reviewing the 1.5SMC540AHE3_A/I datasheet, 1.5SMC540AHE3_A/I pinout, 1.5SMC540AHE3_A/I application, or 1.5SMC540AHE3_A/I equivalent, this AEC-Q101-qualified TVS offers verified clamping performance, low incremental surge resistance, and RoHS-compliant matte tin-plated SMC (DO-214AB) package compatibility with automated placement and J-STD-002 solderability.
Technical Context
This unidirectional TVS operates by avalanche breakdown above its reverse stand-off voltage (VWM = 459 V), entering low-impedance clamping mode within <1 ns to limit transient overvoltages. Its glass-passivated junction ensures stable VBR tolerance (±5%) and long-term reliability under repetitive surges up to 0.01% duty cycle.
The device is rated for TJ = –65 °C to +150 °C, with thermal resistance RθJA = 75 °C/W (on 8.0 mm × 8.0 mm copper pads) and RθJL = 15 °C/W, enabling robust operation in engine bay and industrial control environments where ambient temperatures exceed 105 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 513 V / 567 V at IT = 1.0 mA - defines precise avalanche initiation threshold for predictable clamping onset |
| 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) - actual worst-case clamped voltage seen by protected IC or MOSFET |
| PPPM | 1500 W - peak transient energy absorption capability without failure under standardized surge waveform |
| IFSM | 200 A (8.3 ms half-sine) - surge current rating for unidirectional forward conduction during fault events |
| TJ max. | +150 °C - enables use in under-hood automotive modules and high-temperature industrial enclosures |
| Package | SMC (DO-214AB) - industry-standard 2-pin 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; cathode indicated by band on body; compliant with UL 94 V-0, MSL level 1 (260 °C reflow peak), and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse surge return path | Connected to system ground or low-side reference; completes clamping loop during transient events |
| Cathode | Avalanche breakdown terminal / Surge voltage sensing node | Connected to protected line (e.g., 48 V rail); initiates conduction when voltage exceeds VWM |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity without derating in properly laid-out PCBs |
| AEC-Q101 qualified | Validated for automotive powertrain and chassis applications requiring zero defect rates over 15-year service life |
| Glass passivated junction | Ensures ±5% VBR tolerance stability across temperature and lifetime, critical for consistent clamping margin |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a), protecting downstream SiC MOSFETs |
| MSL Level 1, 260 °C peak | Enables single-pass lead-free reflow assembly without popcorn cracking or delamination risk |
Applications
| Automotive 48 V Power Distribution | Industrial DC Link Protection |
|---|---|
|
Use Scenario: Protecting gate drivers and current sensors on 48 V battery-fed motor controllers against load dump and inductive switching spikes. IC Role / Device Role: Unidirectional TVS placed between high-side switch drain and chassis ground to clamp transients up to 120 V. Use Value: Clamps to ≤740 V at 2.03 A, limiting stress on 650 V SiC MOSFETs and preserving isolation barrier integrity. |
Use Scenario: Safeguarding PLC analog input modules connected to field sensors exposed to lightning-induced surges on 24 V/48 V supply rails. IC Role / Device Role: Primary overvoltage clamp on DC input stage upstream of LDOs and ADC front-ends. Use Value: 459 V VWM allows safe operation on 400 VDC nominal systems while rejecting common-mode noise below breakdown threshold. |
| Telecom Base Station Power Supply | Renewable Energy Inverter DC Bus |
|
Use Scenario: Secondary surge suppression on -48 V telecom rectifier outputs subjected to repeated lightning-induced ring waves per ITU-T K.20. IC Role / Device Role: Standoff-rated TVS in parallel with bulk capacitance to absorb residual energy after primary MOV stage. Use Value: 1500 W PPPM and 2.03 A IPPM provide margin beyond IEC 61000-4-5 2 Ω source impedance test requirements. |
Use Scenario: Overvoltage protection on photovoltaic string combiner box DC inputs where open-circuit voltages reach 1000 V. IC Role / Device Role: High-VWM unidirectional suppressor guarding MPPT controller inputs against arc-fault transients. Use Value: 540 V VBR and 459 V VWM enable direct integration into 600 V-class PV systems without series stacking. |
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 | Same VBR/VWM, but SMB package (smaller 4.5 mm × 3.9 mm footprint); lower PPPM = 600 W | Limited to lower-energy transients (IEC 61000-4-5 Level 2); unsuitable for 48 V automotive load dump | Select only when board space is constrained and surge energy does not exceed 600 W capability. |
| 1.5KE540A | Through-hole DO-201 package; identical electrical specs but no AEC-Q101 qualification or MSL-1 rating | Not approved for automotive production; requires wave soldering; higher thermal resistance (RθJA ≈ 100 °C/W) | Use only in non-automotive industrial prototypes or legacy through-hole designs where rework is acceptable. |
Compared with SMBJ540A-E3/52 and 1.5KE540A, the 1.5SMC540AHE3_A/I uniquely combines AEC-Q101 qualification, 1500 W surge rating, and SMC package manufacturability - making it the sole choice for volume automotive 48 V systems requiring zero-defect reliability and J-STD-020 compliance.
Availability
1.5SMC540AHE3_A/I is available at Aetrix Electronics and suitable for automotive power distribution, industrial DC link protection, telecom rectifier outputs, and renewable energy inverter DC bus applications requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC540AHE3_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, and passive components for automotive, industrial, and computing markets.
The 1.5SMC Series was engineered specifically for surface-mount transient suppression in harsh-environment applications - emphasizing AEC-Q101 qualification, high-power handling, and automated assembly compatibility.
FAQ
What is the clamping voltage of the 1.5SMC540AHE3_A/I under a 10/1000 µs surge?
The 1.5SMC540AHE3_A/I clamps to a maximum of 740 V when subjected to its rated peak pulse current of 2.03 A using the standard 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88303 and represents the worst-case voltage seen by downstream circuitry during transient events - critical for ensuring voltage margins of protected 650 V SiC devices.
Is the 1.5SMC540AHE3_A/I AEC-Q101 qualified?
Yes, the 1.5SMC540AHE3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in datasheet 88303 (Revision 09-Mar-2026). This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life - validating its suitability for automotive powertrain and chassis applications.
What does the "_A/I" suffix mean in 1.5SMC540AHE3_A/I?
The "_A/I" suffix in 1.5SMC540AHE3_A/I indicates two attributes: "A" denotes the revision level per Vishay's internal part numbering (applicable to 1.5SMC6.8A–1.5SMC220A variants), and "I" specifies packaging in 13-inch diameter plastic tape and reel with a 3500-unit quantity - optimized for high-volume SMT placement equipment.
Can the 1.5SMC540AHE3_A/I be used in bidirectional configurations?
No, the 1.5SMC540AHE3_A/I is strictly unidirectional, as indicated by the "A" suffix (vs. "CA" for bidirectional). Its cathode band marks polarity, and it conducts only in reverse avalanche mode. For bidirectional protection at similar voltage ratings, Vishay offers the 1.5SMC540CA variant - which has symmetric breakdown in both directions and no polarity marking.
What is the thermal resistance of the 1.5SMC540AHE3_A/I?
The 1.5SMC540AHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on minimum recommended 8.0 mm × 8.0 mm copper pads per terminal, and a junction-to-leads resistance (RθJL) of 15 °C/W. These values are essential for calculating maximum allowable power dissipation at elevated ambient temperatures in sealed enclosures.
1.5SMC540AHE3_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):
- 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_A/I FAQ
1.How can I place an order for 1.5SMC540AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC540AHE3_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 1.5SMC540AHE3_A/I reliable?
The price and inventory of 1.5SMC540AHE3_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 1.5SMC540AHE3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC540AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC540AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC540AHE3_A/I?
1.5SMC540AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC540AHE3_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 1.5SMC540AHE3_A/I?
For technical support, including 1.5SMC540AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC540AHE3_A/I requirements.
6.How does Aetrix verify that 1.5SMC540AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC540AHE3_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 1.5SMC540AHE3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC540AHE3_A/I?
All 1.5SMC540AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC540AHE3_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 1.5SMC540AHE3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC540AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC540AHE3_A/I Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
