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Vishay General Semiconductor - Diodes Division 1.5SMC39AHM3/H
- Part No.:
- 1.5SMC39AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC39AHM3/H.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,783
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Product details
Overview
1.5SMC39AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, designed for high-energy surge protection. It features a 33.3 V stand-off voltage (VWM), 37.1–41.0 V breakdown voltage (VBR) at 1 mA, and clamps transients to ≤53.9 V at 27.8 A peak pulse current (IPPM) under 10/1000 μs waveform - ideal for safeguarding automotive sensor signal lines against ESD and lightning-induced surges.
For engineers reviewing the 1.5SMC39AHM3/H datasheet, 1.5SMC39AHM3/H pinout, 1.5SMC39AHM3/H application, or 1.5SMC39AHM3/H equivalent, this device delivers AEC-Q101 qualification, halogen-free RoHS compliance, 1500 W peak pulse power capability, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for automotive-grade reliability and automated SMT assembly.
Technical Context
The 1.5SMC39AHM3/H operates as a unidirectional clamping TVS diode with avalanche breakdown behavior, responding in <1 ps to transient overvoltages. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1 μA at VWM), while the SMC package provides thermal resistance of 15 °C/W (junction-to-leads) and supports 200 A non-repetitive forward surge current (IFSM).
Designed for operation across -65 °C to +150 °C junction temperature range, it maintains clamping performance under repetitive 0.01% duty cycle pulses. The cathode-band polarity marking enables unambiguous PCB orientation during placement, and its 75 °C/W junction-to-ambient thermal resistance assumes standard 8.0 mm × 8.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 33.3 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (Breakdown) | 37.1–41.0 V at 1 mA - precise avalanche onset threshold ensuring predictable turn-on |
| VC (Clamping) | ≤53.9 V at 27.8 A (10/1000 μs) - limits downstream IC voltage stress during surge events |
| PPPM | 1500 W - peak pulse power handling capacity for transient suppression per IEC 61000-4-5 |
| IPPM | 27.8 A - maximum non-repetitive surge current the device safely clamps without failure |
| TJ max. | +150 °C - enables use in under-hood automotive environments and industrial enclosures |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 0.320" × 0.246" footprint and MSL Level 1 rating |
Pinout & Package
Package: SMC (DO-214AB), molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. 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 low-side reference; enables unidirectional clamping from line-to-ground |
| Cathode | Current exit point during forward conduction; marked with band | Connected to protected signal line or power rail; defines clamping direction and polarity-sensitive layout |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and ADAS sensor interfaces |
| Halogen-free & RoHS-compliant | Meets global environmental regulations without compromising thermal or electrical performance |
| 1500 W peak pulse power (10/1000 μs) | Withstands severe lightning-induced surges per IEC 61000-4-5 Level 4 (4 kV) |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD >15 kV) |
| MSL Level 1 (260 °C peak reflow) | Enables single-pass lead-free reflow assembly without moisture-related popcorn failure |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus signal lines in automotive cabin sensors (e.g., temperature, pressure, position) exposed to load-dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between signal line and chassis ground to shunt surge energy before reaching transceiver IC. Use Value: Clamps 10/1000 μs surges to ≤53.9 V, preserving signal integrity and preventing damage to 3.3 V/5 V automotive microcontrollers. |
Use Scenario: Safeguarding 24 V DC digital input channels on programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Line-to-ground TVS suppressor mounted at connector entry point to absorb repetitive switching transients. Use Value: Handles 27.8 A peak pulse current with <1 ps response, enabling reliable operation in factory automation environments with frequent inductive switching. |
| Telecom Power Interface | Consumer Device USB Port |
|
Use Scenario: Protecting 48 V PoE-powered Ethernet ports in network switches and IP cameras from lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Primary unidirectional clamp on DC input rail upstream of DC/DC converter and PHY IC. Use Value: Withstands 1500 W peak pulse energy while maintaining VC below 54 V, ensuring safe operation of 50 V-rated front-end components. |
Use Scenario: Secondary-level surge protection on VBUS line of USB 2.0/3.0 ports in smart home hubs and portable media players. IC Role / Device Role / Timing Role: Fast-response TVS placed after ESD diode array to handle higher-energy transients beyond IEC 61000-4-2. Use Value: Provides 33.3 V stand-off compatible with 5 V nominal supply, clamping to 53.9 V to prevent latch-up in USB controller ICs. |
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 | Lower PPPM (600 W), SMB package (smaller footprint), VWM = 36 V, VC = 58.1 V at 10.3 A | Limited to lower-energy transients (IEC 61000-4-5 Level 2); not AEC-Q101 qualified | Select when space-constrained layouts require smaller SMC alternative and surge requirements are ≤600 W |
| 1.5KE39A | Through-hole DO-201 package, same VWM/VBR specs, but slower thermal response and no MSL rating | Not suitable for automated SMT production; requires wave soldering or hand assembly | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ36A and 1.5KE39A, the 1.5SMC39AHM3/H uniquely combines AEC-Q101 qualification, halogen-free compliance, 1500 W surge rating, and SMC package suitability for high-volume automotive SMT - making it the preferred choice for new designs requiring robust, production-ready transient protection.
Availability
1.5SMC39AHM3/H is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecom infrastructure requiring stable component supply, long-term lifecycle support, and traceable sourcing for mission-critical surge protection.
Supply support for 1.5SMC39AHM3/H 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, optoelectronics, and passive components for automotive, industrial, and computing markets.
The 1.5SMC Series was developed to deliver high-power, surface-mount TVS protection with AEC-Q101 qualification and halogen-free construction - targeting next-generation automotive ECUs, ADAS sensors, and industrial IoT edge nodes.
FAQ
What is the clamping voltage of the 1.5SMC39AHM3/H at its rated peak pulse current?
The 1.5SMC39AHM3/H clamps to a maximum of 53.9 V at its rated peak pulse current of 27.8 A under the standard 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88303 and reflects worst-case device performance across temperature and manufacturing variation - critical for verifying margin against downstream IC absolute maximum ratings.
Is the 1.5SMC39AHM3/H suitable for automotive applications?
Yes, the 1.5SMC39AHM3/H is AEC-Q101 qualified and carries the HM3 suffix denoting halogen-free, RoHS-compliant, and automotive-grade construction. It is explicitly validated for under-hood and cabin applications including sensor interfaces, body control modules, and infotainment power rails - meeting stringent automotive reliability and thermal cycling requirements.
What does the "H" in the 1.5SMC39AHM3/H part number indicate?
The "H" suffix in 1.5SMC39AHM3/H specifies the packaging format: 7-inch diameter plastic tape and reel containing 850 units. This differs from the "I" suffix (13-inch reel, 3500 units) and aligns with standard SMT pick-and-place feeder compatibility for high-volume automotive manufacturing lines.
How does the 1.5SMC39AHM3/H compare to bidirectional TVS diodes like 1.5SMC39CHM3/H?
The 1.5SMC39AHM3/H is unidirectional and intended for line-to-ground protection where polarity is fixed, offering tighter VBR tolerance (±5%) and lower leakage. In contrast, 1.5SMC39CHM3/H is bidirectional for AC or floating-line applications but exhibits higher leakage and wider VBR spread - the 1.5SMC39AHM3/H is preferred for DC power rails and signal lines with defined ground reference.
What is the maximum operating junction temperature for the 1.5SMC39AHM3/H?
The 1.5SMC39AHM3/H has a maximum operating junction temperature (TJ) of +150 °C, verified per JEDEC JESD22-A103. This rating enables deployment in high-temperature environments such as automotive engine compartments, industrial motor drives, and enclosed telecom equipment - provided PCB thermal design meets the specified 8.0 mm × 8.0 mm copper pad requirement.
1.5SMC39AHM3/H 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):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 27.8A
- 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)
1.5SMC39AHM3/H FAQ
1.How can I place an order for 1.5SMC39AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC39AHM3/H 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 1.5SMC39AHM3/H reliable?
The price and inventory of 1.5SMC39AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC39AHM3/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC39AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC39AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC39AHM3/H?
1.5SMC39AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC39AHM3/H 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 1.5SMC39AHM3/H?
For technical support, including 1.5SMC39AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC39AHM3/H requirements.
6.How does Aetrix verify that 1.5SMC39AHM3/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC39AHM3/H 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 1.5SMC39AHM3/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC39AHM3/H?
All 1.5SMC39AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC39AHM3/H, 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 1.5SMC39AHM3/H part is unused and in its original packaging.
Return procedure for 1.5SMC39AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC39AHM3/H Tags
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