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Vishay General Semiconductor - Diodes Division 1.5SMC7.5AHE3/9AT
- Part No.:
- 1.5SMC7.5AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC7.5AHE3/9AT.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,130
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Product details
Overview
1.5SMC7.5AHE3/9AT 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. It features a 7.13 V minimum breakdown voltage (VBR), 6.40 V standoff voltage (VWM), 11.3 V clamping voltage (VC) at 133 A peak pulse current, and 1500 W peak pulse power capability with 10/1000 µs waveform - ideal for protecting automotive sensor signal lines against ESD and load-switching transients.
For engineers reviewing the 1.5SMC7.5AHE3/9AT datasheet, 1.5SMC7.5AHE3/9AT pinout, 1.5SMC7.5AHE3/9AT application, or 1.5SMC7.5AHE3/9AT equivalent, this device delivers AEC-Q101 qualification, low incremental surge resistance, fast response time, and MSL Level 1 moisture sensitivity - critical for automotive-grade board-level transient suppression where reliability under thermal cycling and repetitive surges is mandatory.
Technical Context
The 1.5SMC7.5AHE3/9AT operates as a unidirectional clamping TVS diode, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response to voltage transients. Its 6.40 V stand-off rating ensures compatibility with 5 V logic and sensor interfaces, while its 11.3 V clamping voltage limits downstream stress during 133 A 10/1000 µs surges.
Thermally, it exhibits RθJA = 75 °C/W and RθJL = 15 °C/W, enabling robust operation up to +150 °C junction temperature. The device is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine), supporting high-energy inductive kickback suppression in automotive power electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 6.40 V - maximum continuous reverse voltage before conduction; sets operating margin for 5 V systems |
| VBR (Min) | 7.13 V at 10 mA - guaranteed breakdown initiation threshold under standardized test conditions |
| VC @ IPPM | 11.3 V at 133 A - clamped voltage during full 1500 W surge; defines worst-case stress on protected IC |
| PPPM | 1500 W - peak pulse power handling with 10/1000 µs waveform; supports automotive ISO 7637-2 Pulse 1/2a/5a |
| IFSM | 200 A - 8.3 ms single half-sine surge rating; enables protection of MOSFET gates and relay drivers |
| TJ max | +150 °C - maximum junction temperature; allows operation in under-hood automotive environments |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal design |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink node | Connected to protected line; conducts transient energy to ground when VIN exceeds VBR |
| Anode | Reference / ground return | Typically tied to system ground plane; completes clamping path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and body electronics |
| Glass passivated junction | Ensures stable VBR and low leakage (<500 µA at VWM) across temperature and lifetime |
| 1500 W peak pulse power | Withstands repeated ISO 7637-2 Pulse 5a (50 V, 500 ms) and IEC 61000-4-5 Combination Wave surges |
| Low clamping ratio (VC/VBR ≈ 1.59) | Minimizes voltage overshoot during clamping - critical for safeguarding 5 V microcontrollers and CAN transceivers |
| MSL Level 1 | Enables standard SMT reflow without baking; compatible with high-volume automotive PCB assembly |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between sensor output and MCU ADC input. Use Value: Limits transient voltage to ≤11.3 V during 133 A surges, preserving 12-bit ADC accuracy and preventing latch-up in automotive-grade microcontrollers. |
Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from inductive switching noise in factory automation. IC Role / Device Role / Timing Role: Standoff-rated transient suppressor on field-side signal entry point before optocoupler isolation. Use Value: Withstands 1500 W surges without degradation, maintaining >10⁶ surge cycles per IEC 61000-4-5 Level 4 compliance. |
| Consumer Power Adapter Input | Telecom Line Interface |
Use Scenario: Secondary-side overvoltage protection on 5 V USB-C PD adapter outputs subjected to hot-plug and cable ESD. IC Role / Device Role / Timing Role: Fast-clamping unidirectional TVS placed after DC-DC converter output filter. Use Value: Responds in <1 ns to 8 kV contact ESD (IEC 61000-4-2), limiting voltage excursion to 11.3 V and preventing damage to USB controller ICs. |
Use Scenario: Surge protection on RS-485 data lines in base station remote radio units exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-line TVS on differential pair, referenced to local ground with low-inductance layout. Use Value: Clamps common-mode transients to <12 V while maintaining signal integrity up to 20 Mbps due to low junction capacitance (~500 pF at 0 V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5A | Same VWM (6.4 V), lower PPPM (400 W), SMA package (smaller thermal mass) | Limited to consumer-grade, low-energy surges; not AEC-Q101 qualified | Select when cost and board space constrain requirements and automotive qualification is unnecessary |
| 1.5KE7.5A | Through-hole DO-201 package, identical electrical specs but higher RθJA (100 °C/W) | Requires wave soldering; unsuitable for automated SMT lines or high-density automotive PCBs | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMAJ7.5A and 1.5KE7.5A, the 1.5SMC7.5AHE3/9AT uniquely combines AEC-Q101 qualification, 1500 W surge capacity, and SMC surface-mount packaging - making it the only option among the three validated for production automotive ECUs requiring zero rework risk and full IATF 16949 traceability.
Availability
1.5SMC7.5AHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom line interface applications requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for 1.5SMC7.5AHE3/9AT 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 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 environments - emphasizing AEC-Q101 qualification, repeatable clamping performance, and thermal robustness in compact SMC packaging.
FAQ
What is the clamping voltage of the 1.5SMC7.5AHE3/9AT under maximum surge conditions?
The 1.5SMC7.5AHE3/9AT has a maximum clamping voltage (VC) of 11.3 V at 133 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during full-rated surge events - critical for ensuring compatibility with 5 V logic families and automotive sensor interfaces.
Is the 1.5SMC7.5AHE3/9AT qualified for automotive use?
Yes, the 1.5SMC7.5AHE3/9AT is AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code suffix "HE3". This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and surge endurance - making the 1.5SMC7.5AHE3/9AT suitable for engine control units, ADAS camera modules, and other automotive electronic control systems.
What does the "9AT" suffix indicate in 1.5SMC7.5AHE3/9AT?
The "9AT" suffix denotes the packaging configuration: 13-inch diameter plastic tape-and-reel format containing 3500 units per reel. This format is optimized for high-speed SMT placement equipment used in automotive electronics manufacturing, supporting consistent feed reliability and traceable lot control - a key requirement for Tier 1 suppliers using the 1.5SMC7.5AHE3/9AT.
How does the 1.5SMC7.5AHE3/9AT compare to bidirectional TVS diodes like 1.5SMC7.5CA?
The 1.5SMC7.5AHE3/9AT is unidirectional and intended for DC-biased lines (e.g., 5 V supply rails or sensor outputs), whereas 1.5SMC7.5CA is bidirectional for AC-coupled or symmetrical signal paths. The 1.5SMC7.5AHE3/9AT offers tighter VBR tolerance (7.13–7.88 V) and lower leakage at VWM, but cannot protect against negative-going transients without additional circuitry - unlike the CA variant which clamps equally in both polarities.
What thermal derating applies to the 1.5SMC7.5AHE3/9AT above 25 °C ambient?
The 1.5SMC7.5AHE3/9AT follows Vishay's standard derating curve: peak pulse power (PPPM) decreases linearly above 25 °C ambient, reaching ~75 % of 1500 W at +85 °C and ~50 % at +125 °C. This derating is defined in Figure 2 of the datasheet and must be applied when designing for under-hood automotive environments where sustained high ambient temperatures occur - ensuring the 1.5SMC7.5AHE3/9AT maintains reliable clamping performance throughout its operational life.
1.5SMC7.5AHE3/9AT 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:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC7.5AHE3/9AT FAQ
1.How can I place an order for 1.5SMC7.5AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC7.5AHE3/9AT 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 1.5SMC7.5AHE3/9AT reliable?
The price and inventory of 1.5SMC7.5AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC7.5AHE3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC7.5AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC7.5AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC7.5AHE3/9AT?
1.5SMC7.5AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC7.5AHE3/9AT 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 1.5SMC7.5AHE3/9AT?
For technical support, including 1.5SMC7.5AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC7.5AHE3/9AT requirements.
6.How does Aetrix verify that 1.5SMC7.5AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC7.5AHE3/9AT 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 1.5SMC7.5AHE3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC7.5AHE3/9AT?
All 1.5SMC7.5AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC7.5AHE3/9AT, 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 1.5SMC7.5AHE3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC7.5AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC7.5AHE3/9AT Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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