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Vishay General Semiconductor - Diodes Division 1.5SMC75A-E3/9AT
- Part No.:
- 1.5SMC75A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC75A-E3/9AT.pdf
- Description:
- TVS DIODE 64.1VWM 104VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,551
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Product details
Overview
1.5SMC75A-E3/9AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 75 V breakdown voltage (VBR = 71.3–78.8 V at 1 mA), 64.1 V standoff voltage (VWM), 104 V clamping voltage (VC) at 14.6 A peak pulse current, and 1500 W peak pulse power capability with 10/1000 µs waveform - deployed to safeguard MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5SMC75A-E3/9AT datasheet, 1.5SMC75A-E3/9AT pinout, 1.5SMC75A-E3/9AT application, or 1.5SMC75A-E3/9AT equivalent, this device delivers verified clamping performance, RoHS-compliant SMC (DO-214AB) packaging, AEC-Q101 qualification readiness (via HE3/HM3 variants), and design-ready thermal resistance (RθJA = 75 °C/W) for automotive, industrial, and telecom power rail protection.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: under normal bias it presents high impedance (<1 µA leakage at 64.1 V), then rapidly avalanches near its 71.3–78.8 V breakdown threshold to divert surge energy away from downstream circuitry. Its glass-passivated junction ensures stable avalanche characteristics and low incremental surge resistance.
It is rated for 1500 W peak pulse power (10/1000 µs), supports 200 A non-repetitive forward surge current (8.3 ms half-sine), and maintains operation across –65 °C to +150 °C junction temperature range. The SMC package enables automated placement and meets J-STD-020 MSL Level 1 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 71.3 V / 78.8 V at 1 mA - defines precise avalanche onset window for predictable clamping initiation |
| VWM | 64.1 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 104 V at 14.6 A - clamping voltage during full 1500 W surge, limiting protected node stress |
| PPPM | 1500 W (10/1000 µs) - peak surge energy handling capacity for lightning and load-switching events |
| IFSM | 200 A (8.3 ms half-sine) - surge current tolerance for short-duration power-line disturbances |
| TJ max | +150 °C - enables reliable operation in under-hood automotive and industrial ambient environments |
| RθJA | 75 °C/W - thermal resistance from junction to ambient on standard 8 mm × 8 mm copper pads |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, polarity indicated by cathode band. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H), compliant with UL 94 V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (unidirectional) | Connected to lower-potential side of protected line; conducts during forward surge or ESD event |
| Cathode | Reverse-biased terminal (marked with band) | Connected to higher-potential side; avalanches into conduction when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables single-device protection against IEC 61000-4-5 Level 4 (4 kV surge) on 12–48 V rails |
| Low clamping ratio (VC/VBR ≈ 1.36) | Minimizes overvoltage overshoot during surge, reducing stress on downstream MOSFET gate oxides or IC inputs |
| Glass-passivated junction | Ensures stable, repeatable avalanche characteristics and long-term reliability under repetitive surge stress |
| MSL Level 1, 260 °C reflow compatible | Supports lead-free assembly without popcorn cracking or parametric shift |
| AEC-Q101 qualification path | HE3/HM3 variants available for automotive applications requiring qualified TVS components |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs and body control modules from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed across input rail, clamping surges before they reach DC-DC converters and microcontrollers. Use Value: Withstands 1500 W surges and clamps to 104 V, keeping downstream 36 V-rated regulators within safe operating area. |
Use Scenario: Safeguarding analog outputs and digital communication lines (e.g., CAN, LIN) of pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground, suppressing ESD and fast transients induced by nearby motor switching. Use Value: 14.6 A peak pulse current rating and <1 µA leakage at 64.1 V preserve signal integrity while enabling fail-safe shutdown during fault conditions. |
| Telecom Power Supply Input | Consumer Equipment AC-DC Adapter Output |
|
Use Scenario: Secondary-side overvoltage protection on 48 V PoE-powered switches and base station RF modules. IC Role / Device Role / Timing Role: Standoff-rated TVS installed at DC input stage to absorb coupled lightning surges from Ethernet cabling or external power feeds. Use Value: 104 V clamping voltage ensures compliance with IEC 61000-4-5 surge immunity requirements for Class B equipment. |
Use Scenario: Output rail protection in wall-mounted AC-DC adapters powering smart home hubs and IoT gateways. IC Role / Device Role / Timing Role: Unidirectional clamp between regulated 5 V/12 V output and ground, absorbing capacitive discharge and board-level ESD. Use Value: Low-profile SMC package fits tight PCB layouts; RoHS-compliant E3 suffix meets global environmental compliance mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A | Same VBR range (71.3–78.8 V), but SMB package (smaller footprint, lower PPPM = 600 W) | Limited to lower-energy surges; unsuitable for IEC 61000-4-5 Level 4 | Select SMBJ75A only where space constraints outweigh surge margin requirements |
| 1.5KE75A | Through-hole TO-204AA (DO-41); identical electrical specs but incompatible mounting and thermal profile | Requires manual assembly; not suitable for automated SMT production | Choose 1.5KE75A only for prototyping or legacy through-hole designs |
Compared with SMBJ75A and 1.5KE75A, the 1.5SMC75A-E3/9AT uniquely balances high 1500 W surge capability, SMT compatibility, and commercial-grade RoHS compliance in a standardized SMC outline - making it optimal for volume-manufactured automotive and industrial power systems requiring validated surge resilience.
Availability
1.5SMC75A-E3/9AT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, telecom power supply input conditioning, and consumer equipment adapter output safeguarding requiring stable component supply and traceable sourcing.
Supply support for 1.5SMC75A-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, TVS devices, and optoelectronics with emphasis on reliability, power handling, and automotive qualification.
The 1.5SMC Series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 readiness are critical.
FAQ
What is the clamping voltage of the 1.5SMC75A-E3/9AT under a 1500 W surge?
The 1.5SMC75A-E3/9AT clamps to 104 V at its rated peak pulse current of 14.6 A, corresponding to a 10/1000 µs waveform delivering 1500 W. This value is measured per Figure 1 in the Vishay datasheet 88303 and reflects worst-case VC under defined test conditions with proper PCB pad layout (8.0 mm × 8.0 mm copper).
Is the 1.5SMC75A-E3/9AT RoHS-compliant and halogen-free?
Yes, the 1.5SMC75A-E3/9AT carries the "E3" suffix, indicating RoHS-compliance per EU Directive 2011/65/EU and exemption 7a. It is not halogen-free; for halogen-free compliance, the "M3" variant (e.g., 1.5SMC75A-M3/9AT) must be selected, as confirmed in the Ordering Information table on page 3 of datasheet 88303.
Does the 1.5SMC75A-E3/9AT meet AEC-Q101 for automotive use?
The 1.5SMC75A-E3/9AT itself is commercial-grade. However, Vishay offers AEC-Q101-qualified versions under the HE3 (RoHS + AEC-Q101) and HM3 (halogen-free + RoHS + AEC-Q101) suffixes - for example, 1.5SMC75AHE3_A/I. The E3/9AT variant is not AEC-Q101 certified, though its construction and thermal specs support migration to qualified variants.
What is the standoff voltage (VWM) of the 1.5SMC75A-E3/9AT, and why does it matter?
The 1.5SMC75A-E3/9AT has a maximum reverse standoff voltage VWM of 64.1 V. This is the highest DC or continuous AC voltage the device can block without entering avalanche conduction. It must exceed the system's normal operating voltage (e.g., 48 V nominal rail) with margin to prevent leakage-induced power loss or false triggering during transients.
How does the thermal resistance RθJA of 75 °C/W affect PCB layout for the 1.5SMC75A-E3/9AT?
The 75 °C/W RθJA value assumes mounting on 8.0 mm × 8.0 mm copper pads per terminal. To maintain junction temperature below 150 °C during repeated surges, designers must replicate this pad area and avoid excessive trace narrowing. Reducing pad size increases thermal resistance, risking premature thermal runaway during high-duty-cycle transient events.
1.5SMC75A-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:
- 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-E3/9AT FAQ
1.How can I place an order for 1.5SMC75A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC75A-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 1.5SMC75A-E3/9AT reliable?
The price and inventory of 1.5SMC75A-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 1.5SMC75A-E3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC75A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC75A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC75A-E3/9AT?
1.5SMC75A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC75A-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 1.5SMC75A-E3/9AT?
For technical support, including 1.5SMC75A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC75A-E3/9AT requirements.
6.How does Aetrix verify that 1.5SMC75A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC75A-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 1.5SMC75A-E3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC75A-E3/9AT?
All 1.5SMC75A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC75A-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 1.5SMC75A-E3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC75A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC75A-E3/9AT Tags
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