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Vishay General Semiconductor - Diodes Division 1.5SMC250AHM3_A/H
- Part No.:
- 1.5SMC250AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC250AHM3_A/H.pdf
- Description:
- TVS DIODE 214VWM 344VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,669
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Product details
Overview
1.5SMC250AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 250 V standoff voltage (VWM), 274 V clamping voltage (VC) at 4.4 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 μs waveform. It is AEC-Q101 qualified and housed in an SMC (DO-214AB) package for automotive and industrial power rail protection.
For engineers reviewing the 1.5SMC250AHM3_A/H datasheet, 1.5SMC250AHM3_A/H pinout, 1.5SMC250AHM3_A/H application, or 1.5SMC250AHM3_A/H equivalent, key selection criteria include its 250 V stand-off rating, 274 V clamping performance under 4.4 A transient current, unidirectional polarity with cathode band marking, SMC package thermal resistance (RθJA = 75 °C/W), and AEC-Q101 qualification status for automotive-grade reliability.
Technical Context
This TVS diode operates as a voltage-clamping protector in series with DC power rails or parallel to sensitive inputs. Its silicon avalanche junction provides sub-nanosecond response to transients, with low incremental surge resistance ensuring stable clamping during repetitive 10/1000 μs surges at 0.01% duty cycle.
Designed for unidirectional operation, it blocks reverse current up to 250 V (VWM) and triggers avalanche conduction above 237–263 V (VBR range). The device meets MSL Level 1 per J-STD-020 and supports lead-free soldering at 260 °C peak reflow temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 250 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (Breakdown) | 237–263 V at 1 mA - Guaranteed avalanche initiation range for reliable overvoltage detection |
| VC (Clamping) | 344 V at 4.4 A - Peak voltage seen by protected circuit during 10/1000 μs transient event |
| PPPM | 1500 W - Surge energy handling capacity with standard 10/1000 μs waveform |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient, defining derating above 25 °C |
| TJ max | +150 °C - Maximum allowable junction temperature for sustained operation |
| Package | SMC (DO-214AB) - Surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal requirement |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection point in unidirectional configuration | Connected to protected line; clamps when voltage exceeds VBR relative to anode |
| Anode | Reference/ground return path | Typically tied to system ground or lower-potential rail; defines polarity and conduction direction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V/24 V systems |
| Glass passivated junction | Ensures long-term stability and low leakage (<1 μA at VWM) across temperature and life cycle |
| Low profile SMC package | Enables automated placement and achieves 75 °C/W thermal resistance with minimal PCB area |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for industrial and automotive supply chains |
Applications
| Automotive Power Rail Protection | Industrial DC Power Input |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs against load dump transients (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor. Use Value: Clamps surge to ≤344 V, preventing damage to downstream DC-DC converters and microcontrollers. |
Use Scenario: Safeguarding programmable logic controller (PLC) 24 V DC inputs from inductive switching spikes. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor on field-side power entry. Use Value: Responds in <1 ns to limit voltage overshoot to safe levels for optocoupler and ASIC inputs. |
| Telecom Line Interface | Renewable Energy Inverter DC Link |
Use Scenario: Shielding Ethernet PHY power pins from ESD and lightning-induced surges in outdoor base stations. IC Role / Device Role / Timing Role: Secondary-level protection after gas discharge tube (GDT) primary stage. Use Value: Provides low-clamping backup with precise 250 V threshold matching telecom DC bias requirements. |
Use Scenario: Suppressing commutation spikes on photovoltaic string inverters' DC bus during MOSFET turn-off. IC Role / Device Role / Timing Role: Clamp diode across DC link capacitors to absorb stored inductive energy. Use Value: Handles repetitive 1500 W pulses without degradation, supporting >100,000 surge cycles per IEC 61000-4-5. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ250A | Lower PPPM (600 W), same VWM (250 V), SMB package (smaller footprint, higher RθJA = 100 °C/W) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a without derating | Select when board space is constrained and surge energy remains below 600 W |
| 1.5KE250A | Through-hole DO-201 package, identical electrical specs but no AEC-Q101 qualification or halogen-free option | Not suitable for automated SMT production or automotive qualification requirements | Choose only for legacy through-hole designs where rework or manual assembly is acceptable |
Compared with 1.5SMC250AHM3_A/H, SMBJ250A offers smaller size but reduced surge margin, while 1.5KE250A lacks SMT compatibility and automotive qualification-making 1.5SMC250AHM3_A/H the sole choice for AEC-Q101-compliant, high-power SMT TVS deployment.
Availability
1.5SMC250AHM3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, telecom power interfaces, and renewable energy inverters requiring stable component supply with full traceability and lifecycle support.
Supply support for 1.5SMC250AHM3_A/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, rectifiers, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series targets high-energy transient suppression in automotive, industrial, and telecom systems, delivering standardized 1500 W surge capability in compact SMC packaging with AEC-Q101 and halogen-free variants.
FAQ
What is the clamping voltage of the 1.5SMC250AHM3_A/H under standard test conditions?
The 1.5SMC250AHM3_A/H has a maximum clamping voltage (VC) of 344 V at 4.4 A peak pulse current with a 10/1000 μs waveform. This value is measured per JEDEC standards and reflects the upper limit of voltage imposed on the protected circuit during a defined transient event. The 1.5SMC250AHM3_A/H maintains this clamping performance across its specified operating temperature range and is validated for repetitive surge duty cycles up to 0.01%.
Is the 1.5SMC250AHM3_A/H suitable for automotive applications?
Yes, the 1.5SMC250AHM3_A/H is AEC-Q101 qualified and specifically designated for automotive use with the "HM3" suffix indicating halogen-free, RoHS-compliant, and AEC-Q101-qualified construction. It meets requirements for under-hood and chassis-mounted modules subject to ISO 7637-2 load dump and ISO 16750-2 supply voltage variation tests. The 1.5SMC250AHM3_A/H is commonly deployed in engine control units, body control modules, and ADAS power supplies.
What does the "_A/H" suffix mean in 1.5SMC250AHM3_A/H?
The "_A/H" suffix in 1.5SMC250AHM3_A/H indicates revision level "A" and packaging in 7-inch diameter plastic tape and reel (code "H"), with a base quantity of 850 units per reel. This ordering code aligns with Vishay's standardized format where "HM3" denotes halogen-free and AEC-Q101 qualification, and "_A/H" specifies manufacturing revision and reel configuration. The 1.5SMC250AHM3_A/H is not a functional variant-it retains identical electrical and thermal specifications as other HM3-suffixed 250 V parts.
How does the thermal performance of the 1.5SMC250AHM3_A/H compare to similar TVS diodes?
The 1.5SMC250AHM3_A/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-superior to SMB-package alternatives like SMBJ250A (RθJA = 100 °C/W). This enables higher sustained power dissipation and better derating above 25 °C ambient. The 1.5SMC250AHM3_A/H also features low thermal impedance to leads (RθJL = 15 °C/W), supporting efficient heat transfer to PCB copper planes in high-reliability applications.
Can the 1.5SMC250AHM3_A/H be used in bidirectional configurations?
No, the 1.5SMC250AHM3_A/H is a unidirectional TVS diode, as indicated by the "A" suffix (not "CA"). It conducts only in reverse breakdown and must be oriented with the cathode band toward the protected line. For bidirectional protection at 250 V, Vishay offers the 1.5SMC250CA variant-but that part has different VBR (237–263 V) and VC (344 V) values and is not pin-compatible or electrically interchangeable with the 1.5SMC250AHM3_A/H.
1.5SMC250AHM3_A/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):
- 214V
- Voltage - Breakdown (Min):
- 237V
- Voltage - Clamping (Max) @ Ipp:
- 344V
- Current - Peak Pulse (10/1000µs):
- 4.4A
- 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)
1.5SMC250AHM3_A/H FAQ
1.How can I place an order for 1.5SMC250AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC250AHM3_A/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 1.5SMC250AHM3_A/H reliable?
The price and inventory of 1.5SMC250AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC250AHM3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC250AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC250AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC250AHM3_A/H?
1.5SMC250AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC250AHM3_A/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 1.5SMC250AHM3_A/H?
For technical support, including 1.5SMC250AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC250AHM3_A/H requirements.
6.How does Aetrix verify that 1.5SMC250AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC250AHM3_A/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 1.5SMC250AHM3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC250AHM3_A/H?
All 1.5SMC250AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC250AHM3_A/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 1.5SMC250AHM3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC250AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC250AHM3_A/H Tags
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