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Vishay General Semiconductor - Diodes Division 1.5SMC75A-E3/57T
- Part No.:
- 1.5SMC75A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC75A-E3/57T.pdf
- Description:
- TVS DIODE 64.1VWM 104VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:214
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Product details
Overview
1.5SMC75A-E3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 1500 W peak pulse power (10/1000 μs), 71.3–78.8 V breakdown voltage at 1 mA, and 104 V maximum clamping voltage at 14.6 A peak pulse current. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power electronics.
For engineers reviewing the 1.5SMC75A-E3/57T datasheet, 1.5SMC75A-E3/57T pinout, 1.5SMC75A-E3/57T application, or 1.5SMC75A-E3/57T equivalent, key selection criteria include unidirectional polarity, 64.1 V stand-off voltage, <1 μA reverse leakage at VWM, AEC-Q101 qualification eligibility (via HE3 suffix), and MSL Level 1 moisture sensitivity.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuit nodes, responding to transient overvoltages within picoseconds. Its glass-passivated junction ensures stable breakdown characteristics, while low incremental surge resistance (Rdyn) minimizes voltage overshoot during fast transients like ESD or inductive switching spikes.
The 1.5SMC75A-E3/57T is rated for 150 °C maximum junction temperature and derates linearly above 25 °C ambient per Fig. 2 of the datasheet. It meets UL 497B recognition (QVGQ2) and JESD201 Class 2 whisker resistance, supporting reliable automated placement on PCBs with 8.0 mm × 8.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 71.3 V / 78.8 V at IT = 1 mA - defines precise voltage threshold where avalanche conduction begins reliably |
| VWM | 64.1 V - maximum continuous reverse operating voltage before significant leakage occurs |
| IPPM | 14.6 A (10/1000 μs waveform) - peak surge current it safely clamps without failure |
| VC | 104 V at IPPM - clamped voltage seen by protected circuit during worst-case surge |
| PPPM | 1500 W - peak pulse power handling capability under standardized surge conditions |
| ID @ VWM | <1.0 μA - ultra-low reverse leakage preserves signal integrity in high-impedance circuits |
| TJ max | +150 °C - enables operation in under-hood automotive or industrial environments |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Polarity marked with cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or lower-potential node in unidirectional clamp configuration |
| Cathode | Current exit point during forward conduction; marked with band | Connected to protected line (e.g., power rail or signal trace) to shunt surges to ground |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables robust protection against lightning-induced surges and inductive load switching events in 12 V/24 V systems |
| Glass passivated chip junction | Ensures long-term stability of breakdown voltage and low parameter drift across temperature and life cycles |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free reflow assembly without preconditioning or special handling |
| AEC-Q101 qualification path available | Facilitates use in automotive ECUs and ADAS modules when ordered with HE3/HM3 suffix variants |
| UL 497B recognized (QVGQ2) | Validates compliance for telecom and industrial surge protection applications requiring safety agency approval |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs from load-dump transients up to 35 V and ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND to clamp overvoltage before LDO regulator input. Use Value: Limits clamped voltage to 104 V, preventing damage to downstream 3.3 V/5 V logic while surviving 1500 W pulses. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) from ESD and cable discharge events in factory automation sensors. IC Role / Device Role / Timing Role: TVS mounted directly at connector interface to divert fast transients before signal conditioning amplifier. Use Value: Sub-nanosecond response and 104 V clamping prevent latch-up or parametric shift in precision op-amps and ADC drivers. |
| Telecom DC Power Feeds | Consumer Device USB Port Protection |
Use Scenario: Shielding -48 V telecom power supply outputs from induced surges on long-distance distribution lines. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground on negative rail to suppress positive-going transients. Use Value: Withstands repetitive 10/1000 μs surges at 0.01 % duty cycle and maintains VWM = 64.1 V for stable bias margin. |
Use Scenario: Adding secondary surge immunity to USB VBUS lines in portable chargers and docking stations exposed to hot-plug and ESD. IC Role / Device Role / Timing Role: Clamp device placed upstream of USB switch or power delivery controller to limit VBUS overvoltage. Use Value: Low 1.0 μA leakage at 64.1 V avoids standby current drain; 104 V clamping prevents damage to USB-PD ICs rated ≤ 28 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A-E3/52 | Lower peak power rating (600 W), SMB (DO-214AA) package, same VBR range but higher Rdyn | Not suitable for 1500 W surge requirements; limited to lower-energy transients in space-constrained designs | Select only if board area is critical and surge energy is ≤600 W; verify clamping voltage margin at reduced IPPM |
| 1.5KE75A | Through-hole TO-204AE (DO-41) package, identical electrical specs but incompatible mounting and thermal profile | Requires PCB redesign for through-hole assembly; higher RθJA (100 °C/W vs. 75 °C/W) limits power cycling endurance | Choose only for legacy through-hole production or prototyping; not drop-in for SMC footprint |
Compared with SMBJ75A-E3/52 and 1.5KE75A, the 1.5SMC75A-E3/57T delivers optimal balance of high-energy clamping, SMT compatibility, and thermal performance in automotive and industrial PCBs-without sacrificing standoff margin or leakage control.
Availability
1.5SMC75A-E3/57T is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC I/O modules, telecom power supplies, and consumer USB power delivery systems requiring stable component supply and RoHS-compliant sourcing.
Supply support for 1.5SMC75A-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, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The 1.5SMC Series was developed specifically for surface-mount transient suppression in harsh environments, targeting AEC-Q101 readiness, high pulse power density, and compatibility with automated SMT lines.
FAQ
What is the maximum clamping voltage of the 1.5SMC75A-E3/57T under a 10/1000 μs surge?
The 1.5SMC75A-E3/57T has a maximum clamping voltage (VC) of 104 V when subjected to its rated peak pulse current of 14.6 A using the 10/1000 μs waveform. This value is measured per Figure 1 and Table on page 2 of the Vishay datasheet 88303 and represents the upper bound voltage imposed on the protected circuit during worst-case transient events. The 1.5SMC75A-E3/57T maintains this clamping performance across its specified operating temperature range.
Is the 1.5SMC75A-E3/57T AEC-Q101 qualified?
The 1.5SMC75A-E3/57T itself carries the commercial-grade E3 suffix and is not AEC-Q101 qualified out-of-box. However, Vishay offers AEC-Q101 qualified versions under the HE3 suffix (e.g., 1.5SMC75AHE3_A), which share identical electrical parameters and SMC packaging but undergo additional stress testing per AEC-Q101. For automotive applications requiring qualification, specify the HE3 variant-not the 1.5SMC75A-E3/57T.
What is the standoff voltage (VWM) of the 1.5SMC75A-E3/57T, and why does it matter?
The standoff voltage (VWM) of the 1.5SMC75A-E3/57T is 64.1 V, meaning it remains in high-impedance blocking mode up to this reverse voltage level with leakage <1.0 μA. This parameter ensures no interference with normal circuit operation-critical for protecting 48 V or 60 V nominal rails where margin between operating voltage and breakdown must be preserved. Exceeding VWM risks premature conduction and system instability.
Can the 1.5SMC75A-E3/57T be used in bidirectional configurations?
No-the 1.5SMC75A-E3/57T is strictly unidirectional, as indicated by the "A" suffix and cathode band marking. Bidirectional operation requires the "CA" suffix (e.g., 1.5SMC75CA). Using the 1.5SMC75A-E3/57T in reverse-biased configurations will result in forward conduction and potential failure. Always match suffix and polarity marking to system topology: "A" for unidirectional, "CA" for bidirectional.
What is the thermal resistance (RθJA) of the 1.5SMC75A-E3/57T, and how does it affect layout?
The typical junction-to-ambient thermal resistance (RθJA) of the 1.5SMC75A-E3/57T is 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, per datasheet Figure 2. This value assumes minimum recommended pad layout; reducing pad area increases RθJA, raising junction temperature during repetitive surges. To maintain reliability, ensure each terminal connects to ≥8 mm² of internal or external copper, especially in high-duty-cycle applications.
1.5SMC75A-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 104V
- Current - Peak Pulse (10/1000µs):
- 14.6A
- 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)
1.5SMC75A-E3/57T FAQ
1.How can I place an order for 1.5SMC75A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC75A-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 1.5SMC75A-E3/57T reliable?
The price and inventory of 1.5SMC75A-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 1.5SMC75A-E3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC75A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC75A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC75A-E3/57T?
1.5SMC75A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC75A-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 1.5SMC75A-E3/57T?
For technical support, including 1.5SMC75A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC75A-E3/57T requirements.
6.How does Aetrix verify that 1.5SMC75A-E3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC75A-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 1.5SMC75A-E3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC75A-E3/57T?
All 1.5SMC75A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC75A-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 1.5SMC75A-E3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC75A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC75A-E3/57T Tags
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