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Vishay General Semiconductor - Diodes Division 1.5SMC7.5A-E3/9AT
- Part No.:
- 1.5SMC7.5A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC7.5A-E3/9AT.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,182
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Product details
Overview
1.5SMC7.5A-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 7.13–7.88 V breakdown voltage (VBR at 10 mA), 6.40 V stand-off voltage (VWM), 11.3 V maximum clamping voltage (VC) at 133 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 µs waveform - ideal for safeguarding MOSFETs and sensor interfaces against lightning-induced transients.
For engineers reviewing the 1.5SMC7.5A-E3/9AT datasheet, 1.5SMC7.5A-E3/9AT pinout, 1.5SMC7.5A-E3/9AT application, or 1.5SMC7.5A-E3/9AT equivalent, this part delivers verified unidirectional clamping performance in SMC (DO-214AB) packaging with RoHS-compliant matte tin terminals, MSL Level 1 rating, and AEC-Q101 qualification availability - critical for automotive and industrial surge protection design validation.
Technical Context
The 1.5SMC7.5A-E3/9AT operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology for stable, repeatable clamping under transient stress. Its low incremental surge resistance and fast response time ensure minimal voltage overshoot during ESD or inductive switching events.
Rated for -65 °C to +150 °C operating junction temperature, it supports high-reliability deployment in automotive ECUs and industrial PLC I/O modules. Thermal resistance of 75 °C/W (junction-to-ambient, typical) and 15 °C/W (junction-to-leads) enables effective power dissipation without external heatsinking under standard PCB pad layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.13 V / 7.88 V at 10 mA - defines precise avalanche initiation threshold for predictable clamping onset |
| VWM | 6.40 V - maximum continuous reverse voltage before leakage exceeds 500 µA, ensuring no conduction during normal operation |
| VC @ IPPM | 11.3 V at 133 A - clamped voltage seen by protected circuit during full 1500 W transient, limiting downstream stress |
| PPPM | 1500 W (10/1000 µs) - peak surge energy handling capacity compatible with IEC 61000-4-5 Level 4 requirements |
| IFSM | 200 A (8.3 ms half-sine) - surge current rating for unidirectional forward conduction during rare fault conditions |
| TJ max. | +150 °C - enables operation in under-hood automotive environments and high-temperature industrial enclosures |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 0.305" × 0.320" footprint and 0.126" height for automated assembly |
Pinout & Package
Package: SMC (DO-214AB), molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance return plane; carries full surge current during clamping |
| Cathode | Protected line connection / clamping node | Connected to the line being protected (e.g., 5 V rail); voltage referenced to anode during avalanche conduction |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Enables compliance with IEC 61000-4-5 surge immunity testing up to 4 kV line-to-ground in compact SMC package |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage performance across temperature and lifetime cycling |
| MSL Level 1 (260 °C peak) | Supports standard reflow soldering without preconditioning, reducing manufacturing complexity and cost |
| AEC-Q101 qualified variant available | Validates reliability for automotive applications including body control modules and ADAS sensor interfaces |
| Low clamping ratio (VC/VBR ≈ 1.5) | Minimizes overvoltage exposure to downstream ICs while maintaining margin above VWM |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power rails in vehicle body control units from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND to clamp positive surges above 6.4 V while remaining non-conductive during nominal operation. Use Value: Limits peak voltage to ≤11.3 V during 133 A transients, preventing damage to 5 V/3.3 V LDOs and MCU input stages per ISO 7637-2 Pulse 5a. |
Use Scenario: Safeguarding analog output lines of pressure/temperature sensors in factory automation systems exposed to relay coil flyback. IC Role / Device Role / Timing Role: TVS connected across sensor output and ground to absorb inductive kickback from nearby solenoid drivers. Use Value: Clamps transients within <1 ns, holding output voltage below 12 V to preserve ADC accuracy and prevent op-amp saturation in 4–20 mA transmitter circuits. |
| Consumer USB Port ESD Protection | Telecom DSL Line Surge Suppression |
Use Scenario: Secondary-level protection on USB VBUS lines in set-top boxes and smart displays subjected to system-level ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Standoff-rated TVS placed upstream of USB power switch to shunt ESD current before reaching load switches or PMICs. Use Value: Withstands 15 kV contact discharge while adding <1 pF capacitance, avoiding signal integrity degradation on 480 Mbps USB 2.0 data paths. |
Use Scenario: Primary surge protection on twisted-pair DSL lines entering residential gateways, exposed to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices (one per line) referenced to chassis ground to suppress differential and common-mode transients. Use Value: Delivers 1500 W pulse handling with 11.3 V clamping, enabling compliance with GR-1089-CORE Level 3 telecom surge requirements without gas discharge tube latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A | Lower PPPM (600 W), same SMC-compatible SMB (DO-214AA) package, VBR = 7.78–8.6 V | Suitable for lower-energy transients; not rated for IEC 61000-4-5 Level 4 | Select when board space allows SMB footprint and surge energy demand is ≤600 W |
| 1.5KE7.5A | Through-hole DO-201 package, identical electrical specs but incompatible with SMT assembly | Used in legacy designs or prototyping where manual assembly or socketing is acceptable | Choose only if SMT is not required and thermal mass from lead-frame aids heat dissipation in high-duty-cycle scenarios |
Compared with SMBJ7.0A and 1.5KE7.5A, the 1.5SMC7.5A-E3/9AT uniquely combines 1500 W surge capability, SMC surface-mount compatibility, and RoHS-compliant matte tin terminations - making it the preferred choice for high-volume automotive and industrial PCBs requiring automated assembly and Level 4 surge immunity.
Availability
1.5SMC7.5A-E3/9AT is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, consumer USB power rail hardening, and telecom DSL line surge suppression requiring stable component supply and traceable sourcing.
Supply support for 1.5SMC7.5A-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, and protection devices with emphasis on reliability, precision, and application-specific optimization.
The 1.5SMC7.5A-E3/9AT belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where robustness and repeatability are non-negotiable.
FAQ
What is the clamping voltage of the 1.5SMC7.5A-E3/9AT under maximum surge conditions?
The 1.5SMC7.5A-E3/9AT exhibits a maximum clamping voltage (VC) of 11.3 V when subjected to its rated peak pulse current of 133 A using the standardized 10/1000 µs waveform. This value is measured at the device terminals under specified test conditions (TA = 25 °C, mounted on 8.0 mm × 8.0 mm copper pads), and represents the upper voltage limit imposed on the protected circuit during worst-case transient events. The 1.5SMC7.5A-E3/9AT maintains this clamping performance consistently due to its glass-passivated junction and low dynamic impedance.
Is the 1.5SMC7.5A-E3/9AT RoHS-compliant and halogen-free?
Yes, the 1.5SMC7.5A-E3/9AT carries the "E3" suffix, indicating full RoHS compliance per Directive 2011/65/EU and exemption 6(c). It is not halogen-free; for halogen-free compliance, the "M3" suffix variant (e.g., 1.5SMC7.5A-M3/9AT) must be selected. Both E3 and M3 versions feature matte tin-plated leads qualified to JESD 201 Class 2 whisker resistance and meet J-STD-002 solderability requirements. The 1.5SMC7.5A-E3/9AT is also MSL Level 1 rated for lead-free reflow processing.
Can the 1.5SMC7.5A-E3/9AT be used in bidirectional protection circuits?
No, the 1.5SMC7.5A-E3/9AT is strictly a unidirectional TVS diode, identifiable by its cathode band marking. For bidirectional protection, Vishay specifies the "CA" suffix variant (e.g., 1.5SMC7.5CA), which provides symmetrical clamping in both polarities. Using the 1.5SMC7.5A-E3/9AT in a bidirectional configuration would result in forward conduction during negative transients, potentially damaging the device or failing to protect the circuit. Always match suffix designation to application polarity requirements.
What is the maximum operating temperature range for the 1.5SMC7.5A-E3/9AT?
The 1.5SMC7.5A-E3/9AT is rated for an operating junction and storage temperature range of -65 °C to +150 °C. This wide thermal envelope supports deployment in under-hood automotive locations, industrial motor drives, and outdoor telecom equipment. Derating of peak pulse power begins above TA = 25 °C per Figure 2 in the datasheet, with 50% power capability retained at TJ ≈ 100 °C. The 1.5SMC7.5A-E3/9AT's RθJA of 75 °C/W assumes standard PCB copper pad layout per specification.
How does the 1.5SMC7.5A-E3/9AT compare to the 1.5SMC6.8A-E3/9AT in terms of voltage ratings?
The 1.5SMC7.5A-E3/9AT has a higher breakdown voltage range (7.13–7.88 V vs. 6.45–7.14 V) and stand-off voltage (6.40 V vs. 5.80 V) than the 1.5SMC6.8A-E3/9AT, making it better suited for 6.5–7.0 V nominal systems where tighter margin above VWM is needed. Both share identical 1500 W PPPM, 11.3 V VC, and SMC packaging. The 1.5SMC7.5A-E3/9AT's slightly higher VBR tolerance reduces risk of premature conduction in noisy 5 V or 6 V rail applications compared to the 1.5SMC6.8A-E3/9AT.
1.5SMC7.5A-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):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- Current - Peak Pulse (10/1000µs):
- 133A
- 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)
1.5SMC7.5A-E3/9AT FAQ
1.How can I place an order for 1.5SMC7.5A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC7.5A-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 1.5SMC7.5A-E3/9AT reliable?
The price and inventory of 1.5SMC7.5A-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 1.5SMC7.5A-E3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC7.5A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC7.5A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC7.5A-E3/9AT?
1.5SMC7.5A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC7.5A-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 1.5SMC7.5A-E3/9AT?
For technical support, including 1.5SMC7.5A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC7.5A-E3/9AT requirements.
6.How does Aetrix verify that 1.5SMC7.5A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC7.5A-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 1.5SMC7.5A-E3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC7.5A-E3/9AT?
All 1.5SMC7.5A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC7.5A-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 1.5SMC7.5A-E3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC7.5A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC7.5A-E3/9AT Tags
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