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Vishay General Semiconductor - Diodes Division 1.5SMC250AHE3_A/H
- Part No.:
- 1.5SMC250AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC250AHE3_A/H.pdf
- Description:
- TVS DIODE 214VWM 344VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,304
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Product details
Overview
1.5SMC250AHE3_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), 237–263 V breakdown voltage (VBR) at 1 mA, 344 V maximum clamping voltage (VC) at 4.4 A peak pulse current (IPPM), 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-grade reliability.
For engineers reviewing the 1.5SMC250AHE3_A/H datasheet, 1.5SMC250AHE3_A/H pinout, 1.5SMC250AHE3_A/H application, or 1.5SMC250AHE3_A/H equivalent, this device serves as a robust overvoltage clamp for DC power rails, sensor interfaces, and automotive ECUs where precise voltage thresholding and fast transient response (<1 ns) are required under IEC 61000-4-2/4-5 conditions.
Technical Context
The 1.5SMC250AHE3_A/H operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its specified breakdown range (237–263 V). Its low incremental surge resistance ensures minimal voltage overshoot during 10/1000 μs transients, while its glass-passivated junction provides stable leakage performance (<1 μA at 214 V) and long-term reliability.
Thermally, it exhibits RθJA = 75 °C/W and RθJL = 15 °C/W, enabling effective heat dissipation on standard 8.0 mm × 8.0 mm copper pads. It supports repetitive surge duty cycles up to 0.01 % and is rated for operation from –65 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 214 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin. |
| VBR (Breakdown) | 237–263 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on across production lot. |
| VC (Clamping) | 344 V at IPPM = 4.4 A - Peak voltage seen by protected circuit during full-rated 10/1000 μs surge; limits stress on downstream ICs. |
| PPPM | 1500 W - Energy-handling capacity per IEC 61000-4-5 surge test; validates robustness against lightning-induced transients. |
| ID (Leakage) | <1 μA at 214 V - Ultra-low reverse leakage preserves efficiency in high-impedance sensing or battery-powered circuits. |
| TJ max. | +150 °C - Enables deployment in under-hood automotive environments without thermal derating penalties. |
| Package | SMC (DO-214AB) - Industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and matte tin-plated leads. |
Pinout & Package
Package: SMC (DO-214AB), molded epoxy case meeting UL 94 V-0 flammability rating; cathode indicated by band on one end; terminals are matte tin plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential rail in unidirectional clamp configuration. |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 24 V supply); conducts avalanche current when VREV > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics use including engine control, body modules, and ADAS sensors. |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-to-earth) without degradation. |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage drift over temperature and lifetime. |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns. |
| Low clamping ratio (VC/VBR ≈ 1.36) | Minimizes overvoltage margin between breakdown and clamping-critical for protecting 28 V-rated components. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs of engine control units (ECUs) against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and input filter capacitor. Use Value: Limits transient voltage to ≤344 V, preventing damage to upstream DC/DC controllers and microcontrollers rated for 40 V absolute maximum. |
Use Scenario: Safeguarding analog outputs of pressure or temperature sensors in factory automation systems exposed to relay switching noise. IC Role / Device Role / Timing Role: Point-of-load TVS on 4–20 mA loop output line, referenced to local ground. Use Value: Clamps induced spikes within <1 ns, preserving signal integrity and avoiding false readings or ADC saturation. |
| Telecom DC Feeder Protection | Renewable Energy Inverter DC Link |
Use Scenario: Shielding PoE-powered equipment (e.g., IP cameras) from surges on 48 V DC feeder lines. IC Role / Device Role / Timing Role: Primary overvoltage suppressor on input side of DC/DC converter stage. Use Value: Handles repeated 1500 W surges without parameter shift, supporting compliance with GR-1089-CORE telecom immunity requirements. |
Use Scenario: Guarding DC link capacitors in solar inverters against grid-switching transients and lightning coupling. IC Role / Device Role / Timing Role: Parallel-mounted TVS across 300–400 V DC bus, coordinated with MOVs for multi-level protection. Use Value: Provides precise 250 V clamping threshold to avoid premature triggering while maintaining margin below capacitor 450 V rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ250A | Same VWM (250 V), but lower PPPM (400 W); SOD-123FL package (smaller, lower thermal mass). | Not suitable for IEC 61000-4-5 Level 4; limited to low-energy ESD and inductive kick scenarios. | Select only when space-constrained and surge energy is ≤400 W; verify thermal derating on PCB. |
| 1.5KE250A | Through-hole DO-201 package; identical electrical specs but higher RθJA (~100 °C/W) and no AEC-Q101 qualification. | Lacks automotive qualification; requires wave soldering; unsuitable for automated SMT lines. | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required. |
Compared with SMAJ250A and 1.5KE250A, the 1.5SMC250AHE3_A/H delivers superior surge handling (1500 W vs. 400 W or 1500 W with inferior thermal performance), AEC-Q101 validation for automotive use, and SMT-ready packaging-making it the optimal choice for production-grade 24–48 V systems requiring field reliability and regulatory compliance.
Availability
1.5SMC250AHE3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and renewable energy inverters requiring stable component supply, AEC-Q101 traceability, and consistent surge performance across production lots.
Supply support for 1.5SMC250AHE3_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, MOSFETs, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The 1.5SMC Series was developed specifically for high-power transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where robustness against lightning, load dump, and switching surges is mission-critical.
FAQ
What is the clamping voltage of the 1.5SMC250AHE3_A/H under full-rated surge current?
The 1.5SMC250AHE3_A/H has a maximum clamping voltage (VC) of 344 V when subjected to its rated peak pulse current (IPPM) of 4.4 A with a 10/1000 μs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 8.0 mm × 8.0 mm copper pads) and represents the highest voltage the protected circuit will experience during a full-energy transient event. The 1.5SMC250AHE3_A/H maintains this clamping performance across its qualified temperature range.
Is the 1.5SMC250AHE3_A/H suitable for automotive applications?
Yes, the 1.5SMC250AHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use, as confirmed by its "HE3" suffix and documentation in Vishay's 1.5SMC series datasheet (Document Number: 88303, Revision: 09-Mar-2026). It meets stringent requirements for temperature cycling, humidity resistance, and surge endurance required in engine control, body electronics, and ADAS subsystems. The 1.5SMC250AHE3_A/H is rated for operation from –65 °C to +150 °C and supports reflow profiles up to 260 °C (MSL Level 1).
What does the "_A/H" suffix mean in 1.5SMC250AHE3_A/H?
The "_A/H" suffix in 1.5SMC250AHE3_A/H indicates two key attributes: "A" denotes the revision level of the device (per Vishay's ordering nomenclature), and "H" specifies the packaging format-7-inch diameter plastic tape and reel with 850 units per reel. This matches the ordering information table in the official datasheet, where "H" corresponds to the delivery mode code for standard SMT reels. The "HE3" portion confirms RoHS-compliant, AEC-Q101-qualified construction.
How does the 1.5SMC250AHE3_A/H compare to bidirectional TVS diodes like 1.5SMC250CA?
The 1.5SMC250AHE3_A/H is unidirectional and intended for DC line protection where polarity is fixed (e.g., 24 V supply rails), offering tighter leakage control and optimized forward conduction characteristics. In contrast, 1.5SMC250CA is bidirectional and used in AC or polarity-agnostic applications (e.g., data lines, antenna ports). The 1.5SMC250AHE3_A/H cannot replace 1.5SMC250CA in AC-coupled circuits due to its asymmetric conduction behavior-its cathode must be correctly oriented relative to system ground.
What is the thermal resistance of the 1.5SMC250AHE3_A/H, and how does it affect layout design?
The 1.5SMC250AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-leads resistance (RθJL) of 15 °C/W, measured on standard 8.0 mm × 8.0 mm copper pads per JEDEC standards. To maintain reliability under repetitive surges, PCB layout must replicate this pad area-undersized copper reduces thermal margin and risks junction overheating. The 1.5SMC250AHE3_A/H datasheet explicitly references this mounting condition for all ratings, including PPPM and derating curves.
1.5SMC250AHE3_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:
- Obsolete
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC250AHE3_A/H FAQ
1.How can I place an order for 1.5SMC250AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC250AHE3_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 1.5SMC250AHE3_A/H reliable?
The price and inventory of 1.5SMC250AHE3_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 1.5SMC250AHE3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC250AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC250AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC250AHE3_A/H?
1.5SMC250AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC250AHE3_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 1.5SMC250AHE3_A/H?
For technical support, including 1.5SMC250AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC250AHE3_A/H requirements.
6.How does Aetrix verify that 1.5SMC250AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC250AHE3_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 1.5SMC250AHE3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC250AHE3_A/H?
All 1.5SMC250AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC250AHE3_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 1.5SMC250AHE3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC250AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC250AHE3_A/H Tags
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