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Vishay General Semiconductor - Diodes Division 1.5SMC7.5AHM3/I
- Part No.:
- 1.5SMC7.5AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC7.5AHM3/I.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,217
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Product details
Overview
1.5SMC7.5AHM3/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 7.13 V minimum breakdown voltage (VBR), 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 rating with 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and DC power input stages.
For engineers reviewing the 1.5SMC7.5AHM3/I datasheet, 1.5SMC7.5AHM3/I pinout, 1.5SMC7.5AHM3/I application, or 1.5SMC7.5AHM3/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, SMC (DO-214AB) package dimensions, clamping performance under surge conditions, and direct alternative part comparisons for ESD and lightning transient protection design.
Technical Context
The 1.5SMC7.5AHM3/I operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve fast response (<1 ps) and low incremental surge resistance. Its clamping behavior is defined by a 10/1000 µs double-exponential surge waveform, with thermal derating above 25 °C per Fig. 2 and peak pulse current limited by junction temperature rise.
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads, it meets J-STD-020 MSL Level 1 (260 °C peak reflow) and supports repetitive surge duty cycles up to 0.01 %. The cathode band marking identifies polarity, and its halogen-free, RoHS-compliant construction aligns with Vishay HM3 automotive-grade material specifications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 6.40 V - Maximum continuous reverse voltage before leakage exceeds 500 µA; defines safe operating margin below breakdown |
| VBR (Min) | 7.13 V at 10 mA test current - Guaranteed avalanche initiation threshold ensuring predictable turn-on during transients |
| VC (Clamp) | 11.3 V at 133 A IPPM - Peak voltage seen by protected circuit during 1500 W surge; limits stress on downstream ICs |
| PPPM | 1500 W - Peak pulse power handling with 10/1000 µs waveform; enables protection against IEC 61000-4-5 Level 4 surges |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive environments |
| Package | SMC (DO-214AB) - Standardized 2-pin surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, 2-terminal device. Cathode identified by molded band; anode is unmarked end. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H); terminals are matte tin-plated for J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Protected line connection (anode side grounded or referenced) | Reverse-biased terminal during normal operation; conducts avalanche current during positive transients on protected line |
| Anode (unmarked end) | Reference/ground connection | Low-impedance return path for surge current; must be routed with minimal inductance to maintain clamping efficacy |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Enables single-device protection against high-energy lightning-induced surges per IEC 61000-4-5 without external series impedance |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control units, ADAS sensors, and body electronics requiring extended temperature and lifetime reliability |
| Halogen-free & RoHS-compliant | Meets global environmental compliance mandates (e.g., EU RoHS Directive 2011/65/EU) without compromising surge robustness |
| Low clamping ratio (VC/VBR ≈ 1.59) | Minimizes overvoltage overshoot during fast transients, reducing risk of latch-up or gate oxide damage in protected MOSFETs and ICs |
| MSL Level 1 moisture sensitivity | Allows standard SMT reflow without dry-pack or baking, simplifying manufacturing and reducing process cost |
Applications
| Automotive Sensor Interface | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp positive transients while blocking reverse leakage during normal operation. Use Value: Maintains VWM = 6.40 V margin below 12 V nominal supply, clamps to ≤11.3 V during 133 A surge - preserving signal integrity and preventing transceiver latch-up. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input node, coordinated with series current-limiting resistor to limit IPPM within 1500 W rating. Use Value: Withstands repetitive 10/1000 µs surges up to 0.01 % duty cycle; clamping at 11.3 V prevents damage to optocoupler input LEDs and Schmitt-trigger receivers. |
| DC Power Supply Input | Consumer USB Port Protection |
Use Scenario: Secondary-level surge suppression on 5–12 V DC power rails feeding microcontrollers, memory, and communication ICs. IC Role / Device Role / Timing Role: Fast-acting shunt device that activates within picoseconds to divert surge energy away from sensitive downstream components. Use Value: Low VC/VBR ratio ensures protected ICs experience <11.3 V during worst-case surge - well below typical 16 V absolute maximum ratings. |
Use Scenario: Overvoltage guard on VBUS line of USB 2.0 ports in set-top boxes and smart home hubs exposed to ESD and hot-plug transients. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing ±15 kV contact ESD (IEC 61000-4-2) and 100 V fast-rising line transients. Use Value: 6.40 V VWM allows full 5 V operation with headroom; 11.3 V clamping prevents USB PHY damage while meeting USB-IF voltage tolerance limits. |
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), smaller SMB package (DO-214AA), VC = 12.0 V at 50 A | Not AEC-Q101 qualified; suitable for commercial-grade consumer or computing applications only | Select when board space is constrained and surge energy is ≤600 W; verify thermal margin with reduced pad area |
| 1.5SMC7.5AHE3/I | Same electrical specs and SMC package, but RoHS-compliant commercial grade (E3) without halogen-free or AEC-Q101 validation | Lacks automotive qualification; not approved for under-hood or safety-critical vehicle systems | Choose for cost-sensitive industrial or telecom designs where AEC-Q101 is not mandated |
Compared with 1.5SMC7.5AHM3/I, SMBJ7.0A offers smaller footprint but sacrifices 60 % peak power handling and automotive qualification; 1.5SMC7.5AHE3/I matches form/fit/function but omits halogen-free materials and AEC-Q101 validation - making 1.5SMC7.5AHM3/I the sole choice for production automotive designs requiring both environmental compliance and reliability certification.
Availability
1.5SMC7.5AHM3/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC inputs, and DC power supply protection requiring stable component supply, AEC-Q101 traceability, and halogen-free compliance.
Supply support for 1.5SMC7.5AHM3/I 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, efficiency, and application-specific optimization.
The 1.5SMC Series was developed to deliver high-power, surface-mount transient suppression for automotive, industrial, and telecom systems where compact size, AEC-Q101 compliance, and repeatable clamping performance are critical.
FAQ
What is the clamping voltage of the 1.5SMC7.5AHM3/I under maximum surge conditions?
The 1.5SMC7.5AHM3/I exhibits a maximum clamping voltage (VC) of 11.3 V when subjected to its rated peak pulse current (IPPM) of 133 A using the standardized 10/1000 µs waveform. This value is measured at TA = 25 °C on specified 8.0 mm × 8.0 mm copper pads and represents the upper voltage limit imposed on the protected circuit during surge events - critical for ensuring compatibility with 5 V or 12 V system ICs.
Is the 1.5SMC7.5AHM3/I qualified for automotive applications?
Yes, the 1.5SMC7.5AHM3/I is AEC-Q101 qualified, as confirmed by the "HM3" suffix denoting halogen-free, RoHS-compliant, and automotive-grade validation. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 Rev H, making it suitable for deployment in engine control units, ADAS camera modules, and body electronics where reliability across -40 °C to +125 °C ambient is required.
What does the "HM3" suffix indicate in 1.5SMC7.5AHM3/I?
The "HM3" suffix in 1.5SMC7.5AHM3/I specifies halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade "E3" or "M3" versions and confirms compliance with automotive material requirements, including JESD201 Class 2 whisker resistance and UL 94 V-0 flammability rating for the molding compound - all verified in Vishay document 88303.
How does the 1.5SMC7.5AHM3/I compare to bidirectional TVS diodes like 1.5SMC7.5CA?
The 1.5SMC7.5AHM3/I is unidirectional and intended for circuits with a defined ground reference, offering lower leakage and higher surge capability in one polarity. In contrast, 1.5SMC7.5CA is bidirectional with symmetrical clamping for AC-coupled or floating lines. The 1.5SMC7.5AHM3/I's VWM = 6.40 V and VC = 11.3 V apply only in reverse bias; forward conduction follows standard diode characteristics - unlike the CA version which clamps equally in both directions.
What PCB layout guidance applies to the 1.5SMC7.5AHM3/I for optimal surge performance?
For optimal performance, the 1.5SMC7.5AHM3/I must be mounted on minimum recommended copper pads: 0.31" × 0.31" (8.0 mm × 8.0 mm) per terminal, per Vishay's datasheet Fig. 2 and thermal characterization. Short, wide traces to ground minimize inductance; avoid vias in the surge current path; and ensure the cathode connects directly to the protected line while the anode ties to a low-impedance ground plane - deviations reduce effective clamping voltage and risk thermal failure.
1.5SMC7.5AHM3/I 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC7.5AHM3/I FAQ
1.How can I place an order for 1.5SMC7.5AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC7.5AHM3/I 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 1.5SMC7.5AHM3/I reliable?
The price and inventory of 1.5SMC7.5AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC7.5AHM3/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC7.5AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC7.5AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC7.5AHM3/I?
1.5SMC7.5AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC7.5AHM3/I 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 1.5SMC7.5AHM3/I?
For technical support, including 1.5SMC7.5AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC7.5AHM3/I requirements.
6.How does Aetrix verify that 1.5SMC7.5AHM3/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC7.5AHM3/I 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 1.5SMC7.5AHM3/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC7.5AHM3/I?
All 1.5SMC7.5AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC7.5AHM3/I, 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 1.5SMC7.5AHM3/I part is unused and in its original packaging.
Return procedure for 1.5SMC7.5AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC7.5AHM3/I Tags
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