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Vishay General Semiconductor - Diodes Division 1.5SMC30AHM3/H
- Part No.:
- 1.5SMC30AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC30AHM3/H.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,089
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Product details
Overview
1.5SMC30AHM3/H 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 30 V standoff voltage (VWM), 33.3 V minimum breakdown voltage (VBR), 41.4 V maximum clamping voltage at 36.2 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and operates across -65 °C to +150 °C junction temperature range - deployed in automotive power supply rails and industrial sensor interfaces.
For engineers reviewing the 1.5SMC30AHM3/H datasheet, 1.5SMC30AHM3/H pinout, 1.5SMC30AHM3/H application, or 1.5SMC30AHM3/H equivalent, this page delivers verified electrical specs, SMC (DO-214AB) package details, AEC-Q101 qualification status, clamping performance under surge conditions, and direct alternatives for automotive-grade circuit protection design.
Technical Context
The 1.5SMC30AHM3/H employs a glass-passivated silicon junction optimized for fast response (<1 ps) to transient events such as ESD, lightning-induced surges, and inductive switching spikes. Its unidirectional polarity uses a cathode band marking and exhibits low incremental surge resistance (Rdyn) to maintain stable clamping during repetitive 10/1000 µs pulses at 0.01% duty cycle.
Thermally, it achieves RθJA = 75 °C/W and RθJL = 15 °C/W on standard 8.0 mm × 8.0 mm copper pads, enabling reliable operation up to 150 °C junction temperature. The device meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow peak and is halogen-free, RoHS-compliant, and AEC-Q101 qualified (HM3 suffix).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 25.6 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working margin in protected line. |
| VBR (min) | 28.5 V at 1.0 mA test current - Guaranteed breakdown initiation threshold; ensures predictable turn-on during transients. |
| VC | 41.4 V at 36.2 A IPPM - Peak clamped voltage seen by downstream ICs/MOSFETs; limits stress on 3.3 V–48 V systems. |
| PPPM | 1500 W (10/1000 µs) - Surge energy handling capacity; supports IEC 61000-4-5 Level 4 (4 kV) compliance with proper layout. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive and high-ambient industrial environments. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint; compatible with automated pick-and-place and reflow. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT; suffix HM3 confirms qualification. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or lower-potential rail in unidirectional TVS configuration. | Enables low-forward-voltage conduction path during positive transients when cathode is tied to protected line. |
| Cathode | Current exit terminal in forward bias; connected to the line requiring protection (e.g., 24 V supply or CAN_H). | Clamps reverse transients by avalanche breakdown; cathode band identifies this terminal for correct PCB orientation. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Withstands 4 kV IEC 61000-4-5 surges on 2 Ω/12 Ω source impedance when mounted per recommended pad layout. |
| Fast response time | <1 ps junction response enables clamping before sensitive logic or analog circuitry sustains damage from ESD or fast transients. |
| Glass passivated chip junction | Enhances long-term reliability and moisture resistance versus epoxy-passivated alternatives; critical for automotive under-hood use. |
| AEC-Q101 qualified (HM3) | Validated for automotive Grade 2 (-40 °C to +105 °C ambient) and Grade 1 (-40 °C to +125 °C ambient) applications. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC JS709E; supports sustainability requirements without compromising surge performance. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs against load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp transients above 25.6 V. Use Value: Limits peak voltage to 41.4 V during 36.2 A surges, preventing damage to 36 V-rated DC-DC converters and microcontrollers. |
Use Scenario: Safeguarding 4–20 mA current-loop transmitters and RS-485 nodes from field-induced surges in factory automation. IC Role / Device Role / Timing Role: TVS installed across signal pair (e.g., A/B lines) or from signal to ground to absorb common-mode transients. Use Value: Clamps induced voltages within 100 ns, preserving signal integrity and avoiding false triggering of analog front-end ADCs. |
| Telecom Line Card Surge Suppression | Consumer Power Adapter Input Protection |
Use Scenario: Front-end protection of PoE-powered switches and DSLAM line cards exposed to lightning-induced surges on twisted-pair feeds. IC Role / Device Role / Timing Role: Primary unidirectional TVS on DC input bus upstream of DC-DC stage; coordinated with GDT or MOV secondary protection. Use Value: Absorbs 1500 W surge energy without degradation, maintaining system uptime and reducing need for costly redundancy. |
Use Scenario: Input-stage overvoltage protection in AC/DC adapters for smart home hubs and IoT gateways. IC Role / Device Role / Timing Role: Standoff-rated TVS on rectified DC bus to suppress differential-mode surges from mains transients. Use Value: Enables compact design with SMC footprint while meeting UL 62368-1 surge withstand requirements for Class II power supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A-E3/52 | Lower PPPM (600 W), SMB package (smaller footprint), same VWM/VC but higher dynamic impedance. | Best suited for space-constrained consumer electronics where 1500 W surge headroom is not required. | Select when board area is limited and surge threat level is ≤IEC 61000-4-5 Level 2 (1 kV). |
| 1.5KE30A | Through-hole DO-201 package, identical electrical specs but no AEC-Q101 qualification or halogen-free certification. | Applicable in industrial control panels where surface-mount assembly is not mandatory and automotive qualification is unnecessary. | Choose for legacy through-hole designs or cost-sensitive non-automotive applications needing identical clamping behavior. |
Compared with 1.5SMC30AHM3/H, SMBJ30A-E3/52 trades surge robustness for compactness, while 1.5KE30A retains full electrical equivalence but lacks automotive qualification and RoHS/halogen-free compliance - making 1.5SMC30AHM3/H the sole choice for new AEC-Q101-compliant designs requiring 1500 W capability in SMC form factor.
Availability
1.5SMC30AHM3/H is available at Aetrix Electronics and suitable for automotive ECU power rails, industrial sensor interfaces, telecom line cards, and consumer power adapter inputs requiring stable component supply with guaranteed AEC-Q101 qualification and halogen-free compliance.
Supply support for 1.5SMC30AHM3/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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability, power efficiency, and automotive-grade validation.
The 1.5SMC Series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, 1500 W surge handling, and SMC surface-mount compatibility are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC30AHM3/H at its rated peak pulse current?
The 1.5SMC30AHM3/H has a maximum clamping voltage (VC) of 41.4 V at its rated peak pulse current (IPPM) of 36.2 A, measured using a 10/1000 µs waveform. This value ensures downstream components like 36 V-rated DC-DC controllers remain within safe operating limits during surge events. The 1.5SMC30AHM3/H maintains this clamping performance across its full operating temperature range.
Is the 1.5SMC30AHM3/H qualified for automotive applications?
Yes, the 1.5SMC30AHM3/H is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's 88303 datasheet. It undergoes stress testing including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT) to ensure reliability in automotive environments. The 1.5SMC30AHM3/H is approved for use in engine control units, body electronics, and ADAS power domains.
What does the "HM3" suffix indicate in 1.5SMC30AHM3/H?
The "HM3" suffix in 1.5SMC30AHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. "H" specifies the tape-and-reel packaging format (850 units per 7-inch reel), while "M3" confirms halogen-free molding compound and compliance with JEDEC JS709E. This distinguishes it from commercial-grade "M3" parts lacking automotive qualification and from "HE3" variants that are RoHS-compliant but not halogen-free.
How does the 1.5SMC30AHM3/H compare to bidirectional TVS diodes in surge protection?
The 1.5SMC30AHM3/H is unidirectional and intended for DC power line protection where polarity is fixed - it offers lower leakage and tighter VBR tolerance than equivalent bidirectional devices. Unlike bidirectional types (e.g., 1.5SMC30CHM3/H), the 1.5SMC30AHM3/H cannot protect AC or differential-signal lines without external biasing. Its cathode-band marking ensures correct orientation during placement.
What is the thermal resistance of the 1.5SMC30AHM3/H, and how does it affect PCB layout?
The 1.5SMC30AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal, as specified in the datasheet. To maintain safe junction temperatures under repeated surges, PCB layout must replicate this pad area and avoid excessive trace length or isolation. Reducing pad size increases RθJA, risking thermal runaway during high-duty-cycle transients.
1.5SMC30AHM3/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):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 36.2A
- 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)
1.5SMC30AHM3/H FAQ
1.How can I place an order for 1.5SMC30AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC30AHM3/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 1.5SMC30AHM3/H reliable?
The price and inventory of 1.5SMC30AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC30AHM3/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC30AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC30AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC30AHM3/H?
1.5SMC30AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC30AHM3/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 1.5SMC30AHM3/H?
For technical support, including 1.5SMC30AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC30AHM3/H requirements.
6.How does Aetrix verify that 1.5SMC30AHM3/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC30AHM3/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 1.5SMC30AHM3/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC30AHM3/H?
All 1.5SMC30AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC30AHM3/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 1.5SMC30AHM3/H part is unused and in its original packaging.
Return procedure for 1.5SMC30AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC30AHM3/H Tags
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