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Vishay General Semiconductor - Diodes Division 1.5SMC36AHM3/I
- Part No.:
- 1.5SMC36AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC36AHM3/I.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,555
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Product details
Overview
1.5SMC36AHM3/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 36 V breakdown voltage (VBR = 34.2–37.8 V at 1 mA), 30.8 V stand-off voltage (VWM), 49.9 V clamping voltage (VC) at 30.1 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O protection, and DC power rail surge suppression.
For engineers reviewing the 1.5SMC36AHM3/I datasheet, 1.5SMC36AHM3/I pinout, 1.5SMC36AHM3/I application, or 1.5SMC36AHM3/I equivalent, key selection considerations include its unidirectional polarity, SMC (DO-214AB) package compatibility, AEC-Q101 qualification status, and thermal resistance (RθJA = 75 °C/W) for board-level thermal design validation.
Technical Context
This TVS diode operates as a clamping device that transitions from high-impedance standby to low-impedance conduction when reverse voltage exceeds VWM (30.8 V), limiting transient energy via avalanche breakdown. Its glass-passivated junction ensures stable VBR tolerance (±5%) and fast response time (<1 ns), critical for protecting MOSFET gates and microcontroller I/O against ESD and lightning-induced surges.
The 1.5SMC36AHM3/I is rated for repetitive 10/1000 µs pulses at 0.01% duty cycle, supports 200 A non-repetitive forward surge current (IFSM), and maintains operation across –65 °C to +150 °C junction temperature range. Its halogen-free, RoHS-compliant construction and JESD201 Class 2 whisker resistance meet automotive-grade reliability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 34.2 V / 37.8 V at 1 mA - defines precise avalanche initiation threshold for repeatable clamping behavior |
| VWM | 30.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 49.9 V at 30.1 A - peak clamped voltage during 1500 W transient, directly limiting stress on downstream ICs |
| PPPM | 1500 W - peak pulse power handling with 10/1000 µs waveform, enabling protection against IEC 61000-4-5 Level 4 surges |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, used to calculate safe power derating above 25 °C |
| TJ max | +150 °C - maximum junction temperature, supporting under-hood automotive and industrial ambient conditions |
| IFSM | 200 A - 8.3 ms half-sine surge rating, validating robustness against motor-switching transients |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased terminal | Connected to protected line; conducts during overvoltage to shunt current to ground |
| Anode (unbanded end) | Reference/ground terminal | Typically tied to system ground or lower-potential rail; completes clamping path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor modules |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global electronics manufacturing and end-of-life recycling |
| 1500 W peak pulse power | Enables single-device protection against severe transients without external current-limiting resistors |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for 3.3 V/5 V logic |
| MSL Level 1 (260 °C reflow) | Supports standard lead-free PCB assembly without moisture sensitivity concerns or baking requirements |
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 load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between sensor signal line and ground, responding within <1 ns to limit voltage to ≤49.9 V. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V analog front-ends and communication ICs during vehicle battery transients. |
Use Scenario: Safeguarding digital input/output channels of programmable logic controllers against field-wiring induced surges and electrostatic discharge. IC Role / Device Role / Timing Role: Standoff-rated TVS (30.8 V) installed at connector interface to clamp induced spikes before reaching isolation barriers or MCU GPIOs. Use Value: Eliminates need for secondary protection stages while maintaining immunity to 1 kV/2 kV contact ESD per IEC 61000-4-2. |
| DC Power Rail Surge Suppression | Motor Drive Gate Protection |
Use Scenario: Securing 24 V or 36 V DC power distribution networks in factory automation equipment against switching transients and lightning-coupled surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main supply rail, absorbing up to 1500 W for 1 ms with minimal voltage rise. Use Value: Maintains system uptime by preventing brownouts or reset events caused by transient-induced undervoltage lockout. |
Use Scenario: Shielding high-side/low-side MOSFET gate drivers in BLDC inverters from Miller-induced voltage spikes during fast switching. IC Role / Device Role / Timing Role: Fast-response TVS connected between gate and source, clamping gate-source voltage to ≤49.9 V during dV/dt events. Use Value: Avoids unintended turn-on or gate oxide breakdown, extending MOSFET lifetime in high-frequency motor control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A-E3/52 | Lower peak pulse power (600 W), SMB (DO-214AA) package, same VWM/VC specs | Not AEC-Q101 qualified; suitable for commercial-grade consumer or computing systems only | Select when cost or board space is constrained and automotive qualification is unnecessary |
| 1.5KE36A | Through-hole DO-201 package, identical electrical specs but higher RθJA (~100 °C/W), no AEC-Q101 option | Limited to prototyping or legacy through-hole designs; not compatible with automated SMT assembly | Choose only for manual assembly or repair scenarios where SMT infrastructure is unavailable |
Compared with 1.5SMC36AHM3/I, SMBJ36A-E3/52 offers smaller footprint but reduced surge capacity and no automotive qualification, while 1.5KE36A provides identical clamping performance in a legacy through-hole form factor unsuitable for modern high-density PCBs.
Availability
1.5SMC36AHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and DC power rail surge suppression requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for 1.5SMC36AHM3/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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where robustness, compact SMT packaging, and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC36AHM3/I under maximum rated surge current?
The 1.5SMC36AHM3/I has a maximum clamping voltage (VC) of 49.9 V at 30.1 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The 1.5SMC36AHM3/I maintains this clamping performance across its full operating temperature range.
Is the 1.5SMC36AHM3/I qualified for automotive applications?
Yes, the 1.5SMC36AHM3/I is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's 1.5SMC Series datasheet (Document Number 88303). This qualification validates its reliability for use in automotive subsystems including body electronics, powertrain sensors, and infotainment interfaces subjected to extended temperature cycling and mechanical shock.
What does the "HM3" suffix indicate in 1.5SMC36AHM3/I?
The "HM3" suffix in 1.5SMC36AHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "H" indicates tape-and-reel packaging in 13-inch reels (I-type carrier), and "M3" specifies the halogen-free material set meeting JEDEC standards. This distinguishes it from commercial-grade M3 variants lacking automotive qualification.
Can the 1.5SMC36AHM3/I be used in bidirectional configurations?
No, the 1.5SMC36AHM3/I is a unidirectional TVS diode, as indicated by its "A" suffix and cathode band marking. Bidirectional operation requires a "CA" suffix part (e.g., 1.5SMC36CA). Using the 1.5SMC36AHM3/I in reverse-biased signal paths would result in forward conduction and failure to suppress positive transients.
What is the thermal resistance and how does it affect layout for the 1.5SMC36AHM3/I?
The 1.5SMC36AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To maintain safe junction temperatures under sustained power dissipation, PCB layout must provide adequate copper area and avoid thermal bottlenecks - especially critical in automotive under-hood applications where ambient temperatures exceed 85 °C.
1.5SMC36AHM3/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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 30.1A
- 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)
1.5SMC36AHM3/I FAQ
1.How can I place an order for 1.5SMC36AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC36AHM3/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 1.5SMC36AHM3/I reliable?
The price and inventory of 1.5SMC36AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC36AHM3/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC36AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC36AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC36AHM3/I?
1.5SMC36AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC36AHM3/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 1.5SMC36AHM3/I?
For technical support, including 1.5SMC36AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC36AHM3/I requirements.
6.How does Aetrix verify that 1.5SMC36AHM3/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC36AHM3/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 1.5SMC36AHM3/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC36AHM3/I?
All 1.5SMC36AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC36AHM3/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 1.5SMC36AHM3/I part is unused and in its original packaging.
Return procedure for 1.5SMC36AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC36AHM3/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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