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onsemi 1.5SMC7.5AT3G
- Part No.:
- 1.5SMC7.5AT3G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC7.5AT3G.pdf
- Description:
- TVS DIODE 6.4V 11.3V SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
1.5SMC7.5AT3G from onsemi is a unidirectional 1500 W transient voltage suppressor (TVS) diode designed for parallel overvoltage protection of DC power rails and signal lines. It features a 7.5 V nominal Zener breakdown voltage, 11.3 V maximum clamping voltage at 10 A peak pulse current, and <1.0 ns response time - enabling robust ESD and surge protection in automotive power supplies, industrial I/O modules, and medical equipment front-ends.
For engineers reviewing the 1.5SMC7.5AT3G datasheet, pinout, applications, or equivalent options, key selection criteria include working peak reverse voltage (VRWM = 6.4 V), clamping performance under 10/1000 µs transients, UL 497B certification for isolated loop circuits, and Pb-free SMC (Case 403) surface-mount compatibility with automated assembly.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VRWM (6.4 V), it avalanches into low-impedance conduction to divert surge current away from downstream circuitry. Its design centers on fast turn-on (<1.0 ns), low dynamic impedance, and stable temperature coefficient (0.061 %/°C) to maintain clamping accuracy across operating temperatures.
The device uses a planar junction structure in an epoxy-molded SURMETIC® package with modified L-bend leads for enhanced solder joint reliability. It meets AEC-Q101 stress testing requirements and supports non-repetitive 1500 W surges per 10/1000 µs waveform - validated under UL 497B for isolated loop protection in telecom and process control systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W @ 1.0 ms - sustains single high-energy transients without failure |
| Working Peak Reverse Voltage (VRWM) | 6.4 V - sets minimum operating voltage threshold before clamping begins |
| Clamping Voltage (VC) | 11.3 V @ IPP = 10 A - maximum voltage seen by protected circuit during surge |
| Zener Breakdown Voltage (VBR) | 7.5 V @ IT = 10 A - precise avalanche initiation point for predictable protection |
| Response Time | <1.0 ns - enables suppression before transient energy couples into sensitive nodes |
| ESD Rating | Class 3 (>16 kV HBM) - withstands human-body-model electrostatic discharge events |
| UL Recognition | UL 497B QVGQ2 - certified for use in isolated loop circuit protection applications |
Pinout & Package
Package: SMC (Case 403), surface-mount, Pb-free, void-free thermosetting plastic housing with cathode indicated by molded notch. Dimensions: 5.59–6.10 mm (D) × 6.60–7.11 mm (E) × 1.90–2.41 mm (A).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current return path during clamping | Connected to system ground or low-side reference; completes surge current path |
| Cathode | Protected line connection | Connected to rail or signal line requiring overvoltage protection; polarity notch identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse rating | Enables single-event protection against IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) |
| Low clamping ratio (VC/VBR = 1.51) | Minimizes voltage overshoot during surge, reducing stress on downstream ICs |
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics under extended temperature and life stress |
| UL 497B recognition | Approved for safety-critical isolated loop protection in medical and industrial control systems |
| Pb-free SURMETIC® package | RoHS-compliant with 260°C/10s soldering tolerance and corrosion-resistant finish |
Applications
| Automotive Power Supply Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt TVS placed between power rail and ground to clamp transients before they reach regulator ICs and microcontrollers. Use Value: Withstands 1500 W surges and maintains clamping below 11.3 V - preventing brownout or latch-up in 5 V/3.3 V logic domains. |
Use Scenario: 24 V digital input channels in programmable logic controllers interfacing with field sensors. IC Role / Device Role / Timing Role: Unidirectional TVS connected across input terminals to suppress induced surges from relay switching or lightning coupling. Use Value: VRWM = 6.4 V ensures no leakage during normal 24 V operation; fast response prevents false triggering of input comparators. |
| Medical Equipment Front-End Protection | Telecom Isolated Loop Interface |
Use Scenario: Patient-connected monitoring devices requiring reinforced isolation and low leakage. IC Role / Device Role / Timing Role: Secondary-side TVS on isolated DC-DC output rails protecting analog front-end amplifiers and ADCs. Use Value: UL 497B certification validates suitability for patient-isolation barrier protection; IR < 500 nA @ VRWM minimizes measurement error. |
Use Scenario: 4–20 mA current-loop transmitters in hazardous area instrumentation. IC Role / Device Role / Timing Role: TVS placed across loop terminals to absorb surges while maintaining loop integrity per IEC 61000-4-5. Use Value: Low dynamic impedance and 0.061 %/°C tempco ensure stable clamping across ambient range - critical for precision current-loop accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.0A | Lower peak power (400 W), SMA package (smaller footprint), VRWM = 7.0 V | Not rated for UL 497B; unsuitable for certified isolated loop designs | Select only for space-constrained, lower-energy environments where UL certification is not required |
| 1.5KE7.5A | Through-hole DO-201 package, same 7.5 V VBR, but slower response (~1.5 ns) and no AEC-Q101 qualification | Lacks automotive qualification and surface-mount compatibility for modern PCB assembly | Use only in legacy through-hole designs where reworkability outweighs surge margin and qualification needs |
Compared with 1.5SMC7.5AT3G, SMAJ7.0A trades surge capacity and safety certification for compactness, while 1.5KE7.5A sacrifices mounting flexibility and automotive compliance for cost-sensitive through-hole builds - neither matches the integrated qualification, clamping precision, and layout-ready SMC form factor of the 1.5SMC7.5AT3G.
Availability
1.5SMC7.5AT3G is available at Aetrix Electronics and suitable for automotive power distribution, industrial I/O protection, and medical device isolation barriers requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1.5SMC7.5AT3G 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
onsemi is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, and medical applications.
The 1.5SMC7.5AT3G belongs to onsemi's SMC-series TVS portfolio, engineered specifically for high-reliability, high-power transient suppression in harsh environments - emphasizing fast response, low clamping, and regulatory compliance for mission-critical systems.
FAQ
What is the working peak reverse voltage (VRWM) of the 1.5SMC7.5AT3G?
The 1.5SMC7.5AT3G has a working peak reverse voltage (VRWM) of 6.4 V. This value defines the maximum continuous reverse voltage the device can withstand without entering avalanche conduction. It ensures reliable operation in 5 V or 6 V systems where transient clamping must activate only above normal operating voltage - a critical parameter verified per the onsemi datasheet Table on page 3.
Does the 1.5SMC7.5AT3G meet automotive qualification standards?
Yes, the 1.5SMC7.5AT3G is AEC-Q101 qualified and PPAP capable. This certification confirms its reliability under automotive-grade temperature cycling, humidity, mechanical shock, and lifetime stress tests - making it suitable for engine control units, body electronics, and ADAS power domains where failure modes must be rigorously controlled.
What is the maximum clamping voltage of the 1.5SMC7.5AT3G at its rated peak pulse current?
The 1.5SMC7.5AT3G exhibits a maximum clamping voltage (VC) of 11.3 V at a peak pulse current (IPP) of 10 A, measured using the standard 10/1000 µs waveform. This clamping level directly limits the voltage stress imposed on protected components during surge events - a key specification confirmed in the Electrical Characteristics table on page 3 of the official datasheet.
Is the 1.5SMC7.5AT3G certified for safety-critical isolation applications?
Yes, the 1.5SMC7.5AT3G carries UL 497B recognition (File #E210057, category QVGQ2) for isolated loop circuit protection. This certification covers rigorous testing including strike voltage breakdown, endurance conditioning, and dielectric withstand - validating its use in medical equipment isolation barriers and industrial process control loops where safety compliance is mandatory.
What package type does the 1.5SMC7.5AT3G use, and what are its key mechanical features?
The 1.5SMC7.5AT3G uses the SMC package (Case 403), a Pb-free, surface-mount SURMETIC® housing with dimensions 5.59–6.10 mm × 6.60–7.11 mm × 1.90–2.41 mm. Key features include a molded cathode notch for polarity identification, modified L-bend leads for improved solder pad contact, and 260°C/10s soldering tolerance - all documented in the Package Dimensions section on page 7 of the datasheet.
1.5SMC7.5AT3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- Packaging:
- Bulk
- 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):
- 132A
- 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:
- SMC
1.5SMC7.5AT3G FAQ
1.How can I place an order for 1.5SMC7.5AT3G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC7.5AT3G 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 1.5SMC7.5AT3G reliable?
The price and inventory of 1.5SMC7.5AT3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC7.5AT3G is usually 5 days.
3.What payment methods are accepted for 1.5SMC7.5AT3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC7.5AT3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC7.5AT3G?
1.5SMC7.5AT3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC7.5AT3G 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 1.5SMC7.5AT3G?
For technical support, including 1.5SMC7.5AT3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC7.5AT3G requirements.
6.How does Aetrix verify that 1.5SMC7.5AT3G is sourced from the original manufacturer or authorized distributors?
All 1.5SMC7.5AT3G 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 1.5SMC7.5AT3G meets industry standards.
7.What is the process for return or replacement of 1.5SMC7.5AT3G?
All 1.5SMC7.5AT3G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC7.5AT3G, 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 1.5SMC7.5AT3G part is unused and in its original packaging.
Return procedure for 1.5SMC7.5AT3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC7.5AT3G Tags
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ESD9B5.0ST5G
onsemi
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D12V0L1B2LP-7B
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PESD2V0Y1BSFYL
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