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Vishay General Semiconductor - Diodes Division 1.5SMC36A-M3/9AT
- Part No.:
- 1.5SMC36A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC36A-M3/9AT.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:4,498
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Product details
Overview
1.5SMC36A-M3/9AT 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 36 V breakdown voltage (VBR = 34.2–37.8 V at 1.0 mA), 30.8 V stand-off voltage (VWM), and clamps transients to ≤49.9 V at 30.1 A peak pulse current (10/1000 μs), delivering 1500 W peak pulse power for automotive and industrial power rail protection.
For engineers reviewing the 1.5SMC36A-M3/9AT datasheet, 1.5SMC36A-M3/9AT pinout, 1.5SMC36A-M3/9AT application, or 1.5SMC36A-M3/9AT equivalent, this device serves as a halogen-free, RoHS-compliant TVS for DC power line and signal line transient suppression where fast response (<1 ns), low clamping ratio (1.63×VWM), and AEC-Q101 qualification readiness are critical selection criteria.
Technical Context
The 1.5SMC36A-M3/9AT operates as a unidirectional avalanche diode with glass-passivated junction, optimized for clamping inductive switching spikes and lightning-induced surges on 24–36 V systems. Its thermal resistance (RθJA = 75 °C/W) and junction temperature limit (TJ = –65 to +150 °C) support operation under sustained ambient conditions up to +125 °C when derated per Fig. 2.
It delivers 1500 W peak pulse power (10/1000 μs waveform, 0.01% duty cycle) with 30.1 A maximum peak pulse current (IPPM) and 49.9 V maximum clamping voltage (VC). Reverse leakage is ≤1.0 μA at VWM, and it meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 34.2 V / 37.8 V at 1.0 mA - defines precise avalanche onset window for reliable overvoltage triggering |
| VWM | 30.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | ≤49.9 V at 30.1 A (10/1000 μs) - clamping level ensures protected ICs see <50 V during worst-case surge |
| PPPM | 1500 W - enables robust protection against IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges on 24 V rails |
| IFSM | 200 A (8.3 ms half-sine) - supports single-event surge survival without bond wire fusing |
| TJ max. | +150 °C - allows use in under-hood automotive environments with minimal derating |
| RθJA | 75 °C/W - requires ≥8 mm × 8 mm copper pads per terminal for full power rating |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile plastic case with matte tin-plated leads; polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to protected circuit ground or lower-potential node; enables unidirectional clamping to ground |
| Cathode | Current exit point during reverse avalanche | Connected to protected line (e.g., 24 V rail); conducts surge current to ground when VIN > VC |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables compliance with IEC 61000-4-5 surge immunity requirements for industrial 24 V systems |
| Clamping voltage ≤49.9 V at 30.1 A | Provides 30% margin below typical 60 V absolute maximum ratings of 24 V-rated MOSFETs and controllers |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a) |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets automotive and industrial environmental compliance mandates without compromising surge performance |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without pre-baking or special handling |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Module Protection |
|---|---|
|
Use Scenario: Suppressing load-dump transients (ISO 16750-2) and alternator ripple on 24 V battery-fed ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 24 V supply rail and chassis ground to clamp surges above 30.8 V. Use Value: Limits voltage seen by downstream DC-DC converters and microcontrollers to ≤49.9 V, preventing latch-up or gate oxide damage. |
Use Scenario: Protecting 24 V digital input channels in programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected across input terminals to shunt ESD and inductive kickback energy. Use Value: Maintains signal integrity by clamping transients within 1 ns while drawing <1 μA leakage at nominal 24 V operation. |
| Telecom DC Power Feeds | Motor Drive Control Board Protection |
|
Use Scenario: Safeguarding 36 V PoE-powered remote units against lightning-induced common-mode surges on DC feed lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC input stage, coordinated with upstream fuse and common-mode chokes. Use Value: Absorbs 1500 W surge energy without degradation, preserving uptime in outdoor telecom cabinets. |
Use Scenario: Shielding gate drivers and current-sense amplifiers from flyback voltages generated by brushed DC motor commutation. IC Role / Device Role / Timing Role: Fast-response unidirectional suppressor across H-bridge supply rails to clamp inductive spikes. Use Value: Prevents false triggering of overvoltage protection circuits and extends lifetime of isolated gate drivers. |
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-T3G | Same VWM (30.8 V), lower PPPM (600 W), SMB package (smaller footprint, higher RθJA) | Limited to lower-energy surges (IEC 61000-4-5 Level 2); unsuitable for automotive load dump | Select when board space is constrained and surge threat level is ≤600 W |
| 1.5KE36A | Through-hole DO-201 package, identical electrical specs but incompatible with SMT assembly | Requires wave soldering or hand assembly; not suitable for automated high-volume production | Choose only for legacy through-hole designs or prototyping where rework tolerance is prioritized |
Compared with SMBJ36A-T3G and 1.5KE36A, the 1.5SMC36A-M3/9AT uniquely balances 1500 W surge capability, SMC surface-mount compatibility, and halogen-free compliance-making it optimal for automotive-grade 24 V systems requiring AEC-Q101 readiness and high-volume SMT manufacturing.
Availability
1.5SMC36A-M3/9AT is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC I/O protection, and telecom DC power feed applications requiring stable component supply, long-term lifecycle assurance, and traceable halogen-free sourcing.
Supply support for 1.5SMC36A-M3/9AT 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 diodes, rectifiers, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The 1.5SMC Series was developed for high-power, surface-mount transient suppression in harsh environments-targeting automotive, industrial, and telecom applications where 1500 W surge capability and AEC-Q101 readiness are essential.
FAQ
What is the maximum clamping voltage of the 1.5SMC36A-M3/9AT at its rated peak pulse current?
The 1.5SMC36A-M3/9AT has a maximum clamping voltage (VC) of 49.9 V at 30.1 A peak pulse current (IPPM) under the standardized 10/1000 μs waveform. This value is guaranteed per Vishay's datasheet (Document Number: 88303, Rev. 09-Mar-2026) and reflects the device's ability to limit transient overvoltage to a safe level for downstream 36 V-rated components. The 1.5SMC36A-M3/9AT achieves this with low incremental surge resistance and fast avalanche response.
Is the 1.5SMC36A-M3/9AT qualified to AEC-Q101?
The 1.5SMC36A-M3/9AT is not AEC-Q101 qualified; it carries the M3 suffix indicating halogen-free, RoHS-compliant commercial grade construction. AEC-Q101 qualified versions use the HM3 suffix (e.g., 1.5SMC36AHM3_A/I). The 1.5SMC36A-M3/9AT meets all electrical and mechanical specifications of the series but lacks the extended stress testing required for automotive qualification. For automotive applications requiring AEC-Q101, specify the HM3 variant.
What is the thermal resistance and recommended PCB layout for the 1.5SMC36A-M3/9AT?
The 1.5SMC36A-M3/9AT 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 achieve full 1500 W pulse rating, the PCB must provide these minimum pad dimensions with adequate copper thickness (≥2 oz) and thermal vias to inner layers if needed. The 1.5SMC36A-M3/9AT datasheet explicitly states that derating applies above TA = 25 °C per Figure 2.
How does the 1.5SMC36A-M3/9AT differ from bidirectional variants like 1.5SMC36CA?
The 1.5SMC36A-M3/9AT is unidirectional, with polarity marked by a cathode band and intended for clamping positive transients to ground. In contrast, 1.5SMC36CA is bidirectional, symmetric in both directions, and used for AC line or data-line protection where polarity reversal occurs. Their VBR, VWM, and VC values differ: 1.5SMC36CA has VWM = 30.8 V (same), but VBR min/max = 34.2–37.8 V in both directions and VC = 49.9 V at ±30.1 A. The 1.5SMC36A-M3/9AT cannot replace 1.5SMC36CA in AC-coupled applications.
What is the reverse leakage current specification for the 1.5SMC36A-M3/9AT at its stand-off voltage?
The 1.5SMC36A-M3/9AT exhibits a maximum reverse leakage current (ID) of 1.0 μA at its rated stand-off voltage (VWM = 30.8 V) and TA = 25 °C. This low leakage ensures minimal power loss and no interference with normal 24–36 V system operation. Leakage remains well below 10 μA up to 80% of VWM, supporting precision sensing and low-quiescent-current designs. All values are confirmed in the Electrical Characteristics table of the official Vishay 1.5SMC36A-M3/9AT datasheet.
1.5SMC36A-M3/9AT 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:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC36A-M3/9AT FAQ
1.How can I place an order for 1.5SMC36A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC36A-M3/9AT 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 1.5SMC36A-M3/9AT reliable?
The price and inventory of 1.5SMC36A-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC36A-M3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC36A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC36A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC36A-M3/9AT?
1.5SMC36A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC36A-M3/9AT 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 1.5SMC36A-M3/9AT?
For technical support, including 1.5SMC36A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC36A-M3/9AT requirements.
6.How does Aetrix verify that 1.5SMC36A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC36A-M3/9AT 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 1.5SMC36A-M3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC36A-M3/9AT?
All 1.5SMC36A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC36A-M3/9AT, 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 1.5SMC36A-M3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC36A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC36A-M3/9AT Tags
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