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Vishay General Semiconductor - Diodes Division 1.5SMC75AHM3/I
- Part No.:
- 1.5SMC75AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC75AHM3/I.pdf
- Description:
- TVS DIODE 64.1VWM 104VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,287
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Product details
Overview
1.5SMC75AHM3/I 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 stand-off voltage (VWM), 104 V maximum clamping voltage (VC) at 14.6 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection circuits.
For engineers reviewing the 1.5SMC75AHM3/I datasheet, 1.5SMC75AHM3/I pinout, 1.5SMC75AHM3/I application, or 1.5SMC75AHM3/I equivalent, key selection criteria include clamping performance under 10/1000 µs transients, unidirectional polarity marking, SMC (DO-214AB) package thermal resistance (RθJA = 75 °C/W), and AEC-Q101 qualification status for automotive-grade reliability.
Technical Context
This device operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its specified breakdown threshold (VBR), diverting surge current away from protected circuitry. Its glass-passivated junction ensures stable leakage (<1 µA at VWM) and fast response time (<1 ns), critical for suppressing ESD and lightning-induced transients.
The 1.5SMC75AHM3/I is rated for 200 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), supports operating junction temperatures from –65 °C to +150 °C, and meets J-STD-020 MSL Level 1 with 260 °C reflow peak - confirming suitability for high-reliability automated SMT assembly without moisture sensitivity concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 71.3 V / 78.8 V at 1 mA - defines precise avalanche initiation range for predictable clamping onset |
| VWM | 64.1 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 104 V at 14.6 A - clamped voltage during 1500 W transient, limiting stress on downstream ICs |
| PPPM | 1500 W (10/1000 µs) - peak surge energy handling capacity for lightning and inductive switching events |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, guiding PCB copper pad design (8.0 mm × 8.0 mm recommended) |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive applications including engine control modules and ADAS sensor interfaces |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased avalanche terminal | Connected to protected line; conducts surge current to ground when VREV > VBR |
| Anode (unmarked end) | Reference/ground return path | Typically tied to system ground or low-impedance return plane to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Enables protection against severe lightning surges and load-dump transients in 12 V/24 V systems |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving margin for 3.3 V/5 V logic interfaces |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure |
| Halogen-free, RoHS-compliant (HM3 suffix) | Meets environmental compliance requirements for automotive and industrial OEM supply chains |
| MSL Level 1, 260 °C reflow compatible | Supports single-pass lead-free reflow without baking or special handling |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from ISO 7637-2 pulses and ESD. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before they reach the transceiver input stage. Use Value: Limits clamped voltage to ≤104 V, preserving integrity of 5 V tolerant receivers and meeting AEC-Q100 stress test margins. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive kickback from solenoids and relays. IC Role / Device Role / Timing Role: Standoff-rated TVS on 24 V DC input lines, absorbing repetitive 1500 W surges without degradation. Use Value: Maintains <1 µA leakage at 64.1 V, preventing false triggering while surviving >1000 surge events per IEC 61000-4-5. |
| Telecom Power Line Protection | Consumer Appliance Motor Control |
Use Scenario: Secondary-side overvoltage suppression on 48 V PoE-powered equipment front-ends. IC Role / Device Role / Timing Role: Unidirectional clamp on DC feed line, coordinated with upstream MOVs to handle combined surge energy. Use Value: 104 V clamping enables use with 60 V-rated DC-DC converters, avoiding overdesign of downstream regulation stages. |
Use Scenario: Protecting microcontroller GPIOs and gate drivers in washing machine motor inverters from commutation spikes. IC Role / Device Role / Timing Role: Localized TVS on low-voltage control signals adjacent to high-current H-bridge outputs. Use Value: Fast <1 ns response prevents latch-up in 3.3 V MCUs; AEC-Q101 qualification validates reliability across thermal cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ75A-E3/57T | Same VWM/VBR/VC specs but lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or lightning-level surges | Select only for space-constrained consumer designs where 400 W surge rating suffices |
| 1.5KE75A | Through-hole DO-201 package, identical electrical specs but no AEC-Q101 qualification, higher RθJA (65 °C/W on infinite heatsink only) | Requires manual insertion or wave soldering; not qualified for automotive electronics | Use for prototyping or legacy through-hole industrial boards where reflow compatibility is not required |
Compared with SMAJ75A-E3/57T and 1.5KE75A, the 1.5SMC75AHM3/I delivers automotive-grade reliability in a surface-mount package optimized for high-energy transient suppression - making it the preferred choice for production automotive and industrial SMT lines requiring AEC-Q101 validation and 1500 W surge handling.
Availability
1.5SMC75AHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom power feeds, and appliance motor control circuits requiring stable component supply, halogen-free compliance, and AEC-Q101 qualification.
Supply support for 1.5SMC75AHM3/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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series was developed for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications demanding AEC-Q101 qualification, 1500 W surge capability, and robust thermal performance.
FAQ
What is the clamping voltage of the 1.5SMC75AHM3/I under a 10/1000 µs surge?
The 1.5SMC75AHM3/I has a maximum clamping voltage (VC) of 104 V at 14.6 A peak pulse current (IPPM) under a 10/1000 µs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 8.0 mm × 8.0 mm copper pads), and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The 1.5SMC75AHM3/I maintains this clamping performance consistently across its qualified temperature range.
Is the 1.5SMC75AHM3/I AEC-Q101 qualified?
Yes, the 1.5SMC75AHM3/I is AEC-Q101 qualified - confirmed by Vishay's ordering code suffix "HM3", which denotes halogen-free, RoHS-compliant, and AEC-Q101-qualified construction. This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, validating its suitability for automotive electronics such as body control modules and ADAS sensor interfaces. The 1.5SMC75AHM3/I data sheet explicitly lists AEC-Q101 under mechanical and qualification notes.
What does the "HM3" suffix mean in 1.5SMC75AHM3/I?
The "HM3" suffix in 1.5SMC75AHM3/I indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "H" denotes halogen-free molding compound, "M3" specifies the commercial-grade RoHS-compliant variant with whisker-resistant matte tin plating, and the "I" suffix identifies 3500-unit tape-and-reel packaging on 13-inch reels. This distinguishes it from "E3" (standard RoHS) and "HE3" (AEC-Q101 + RoHS) variants. The 1.5SMC75AHM3/I meets JESD201 Class 2 whisker testing and UL 94 V-0 flammability standards.
What is the standoff voltage (VWM) of the 1.5SMC75AHM3/I?
The standoff voltage (VWM) of the 1.5SMC75AHM3/I is 64.1 V - the maximum DC or continuous reverse operating voltage at which leakage current remains ≤1 µA. This parameter ensures the device remains non-conductive during normal operation while allowing sufficient margin below its 71.3–78.8 V breakdown range. It is critical for selecting compatible protection on 48 V or 60 V nominal systems where sustained overvoltage must be avoided. The 1.5SMC75AHM3/I's VWM is verified per ANSI/IEEE C62.35 standards.
Does the 1.5SMC75AHM3/I have polarity marking, and how is it oriented?
Yes, the 1.5SMC75AHM3/I is unidirectional and features a cathode band marking on the SMC (DO-214AB) package body. The banded end is the cathode and must be connected toward the protected line (e.g., signal or power rail), while the unmarked end (anode) connects to ground or reference potential. This orientation ensures proper avalanche conduction during reverse overvoltage events. Polarity is confirmed in Vishay's mechanical drawings and electrical characteristics table, and misorientation would prevent effective clamping. The 1.5SMC75AHM3/I's band is visible under standard optical inspection.
1.5SMC75AHM3/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):
- 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:
- 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)
1.5SMC75AHM3/I FAQ
1.How can I place an order for 1.5SMC75AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC75AHM3/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 1.5SMC75AHM3/I reliable?
The price and inventory of 1.5SMC75AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC75AHM3/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC75AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC75AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC75AHM3/I?
1.5SMC75AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC75AHM3/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 1.5SMC75AHM3/I?
For technical support, including 1.5SMC75AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC75AHM3/I requirements.
6.How does Aetrix verify that 1.5SMC75AHM3/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC75AHM3/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 1.5SMC75AHM3/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC75AHM3/I?
All 1.5SMC75AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC75AHM3/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 1.5SMC75AHM3/I part is unused and in its original packaging.
Return procedure for 1.5SMC75AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC75AHM3/I Tags
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