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Vishay General Semiconductor - Diodes Division 1.5SMC250A-E3/57T
- Part No.:
- 1.5SMC250A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC250A-E3/57T.pdf
- Description:
- TVS DIODE 214VWM 344VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,309
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Product details
Overview
1.5SMC250A-E3/57T 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 - deployed in automotive power supplies, industrial motor drives, and telecom line interfaces.
For engineers reviewing the 1.5SMC250A-E3/57T datasheet, 1.5SMC250A-E3/57T pinout, 1.5SMC250A-E3/57T application, or 1.5SMC250A-E3/57T equivalent, key selection criteria include unidirectional polarity, SMC (DO-214AB) package compatibility, clamping performance under 10/1000 μs transients, thermal resistance (RθJA = 75 °C/W), and AEC-Q101 qualification status for automotive use.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR (237–263 V), it avalanches to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown and low leakage (<1 μA at VWM), while the low incremental surge resistance enables rapid energy absorption without thermal runaway.
The device is rated for 1500 W peak pulse power (10/1000 μs), supports 200 A non-repetitive forward surge (8.3 ms half-sine), and maintains operation across –65 °C to +150 °C junction temperature range. Its MSL Level 1 rating (260 °C peak reflow) and matte tin-plated leads ensure compatibility with automated SMT assembly processes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 214 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below breakdown. |
| VBR (Breakdown) | 237–263 V at 1 mA - Confirmed avalanche onset range; ensures predictable triggering during overvoltage events. |
| VC (Clamping) | 344 V at IPPM = 4.4 A - Peak voltage seen by protected circuit during full-rated 10/1000 μs surge; determines stress on downstream components. |
| PPPM | 1500 W - Surge energy handling capacity per IEC 61000-4-5; validates suitability for lightning-induced transients in industrial/commercial systems. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on standard 8.0 mm × 8.0 mm copper pads; informs heatsinking requirements for sustained power dissipation. |
| TJ max. | +150 °C - Maximum allowable junction temperature; sets upper limit for ambient + self-heating in enclosed or high-power environments. |
| ID (Leakage) | <1 μA at VWM - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads; cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to lower-potential side of protected line. | Enables unidirectional clamping - only conducts when cathode is >237 V above anode; blocks reverse current until breakdown threshold. |
| Cathode | Current exit point in forward bias; marked with band; connected to higher-potential side (e.g., supply rail). | Defines polarity-sensitive placement - incorrect orientation disables protection and may cause catastrophic failure under surge. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Validates robustness against IEC 61000-4-5 Level 4 surges (4 kV line-to-ground) in industrial power inputs and DC bus lines. |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure - critical for automotive under-hood applications. |
| AEC-Q101 qualified (suffix B variant) | Confirms reliability for automotive electronics including engine control modules, body controllers, and ADAS power domains. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow soldering without popcorn cracking or delamination - eliminates post-assembly rework risk. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., inductive switch-off), reducing stress on MOSFETs and gate drivers. |
Applications
| Automotive Power Rail Protection | Industrial DC Motor Drive Input |
|---|---|
|
Use Scenario: Protecting 24 V battery-fed ECUs from load dump transients (ISO 16750-2, up to 120 V/100 ms) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between battery rail and ground, triggered within nanoseconds of overvoltage onset. Use Value: Clamps peak voltage to ≤344 V during 1500 W surges, preventing damage to MCU power regulators and CAN transceivers. |
Use Scenario: Safeguarding 48 V DC input stage of variable-frequency drives against switching-induced voltage spikes from IGBT commutation. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main DC bus, absorbing repetitive 10/1000 μs transients generated by PWM inverter stages. Use Value: Limits transient overshoot to <344 V at 4.4 A, preserving electrolytic capacitor lifetime and preventing IGBT desaturation faults. |
| Telecom Line Interface Protection | Renewable Energy Inverter DC Link |
|
Use Scenario: Shielding PoE-powered Ethernet ports (IEEE 802.3af/at) from induced surges on twisted-pair cabling exposed to outdoor environments. IC Role / Device Role / Timing Role: Secondary-level TVS on isolated DC feed path, coordinated with primary gas discharge tube (GDT) for staged clamping. Use Value: Provides sub-100 ns response to fast-rising lightning-induced transients, limiting residual voltage to protect PHY ICs and isolation transformers. |
Use Scenario: Protecting 600 V-class photovoltaic inverter DC link capacitors from grid-switching transients and partial shading-induced voltage reversals. IC Role / Device Role / Timing Role: High-voltage unidirectional TVS mounted directly across DC bus terminals, rated for 250 V working voltage and 344 V clamping. Use Value: Absorbs 1500 W surges without degradation, maintaining bus voltage stability and avoiding false overvoltage trips in MPPT controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ250A | Same VWM (214 V), lower PPPM (600 W), SMB package (smaller footprint, higher RθJA = 90 °C/W) | Limited to lower-energy surges; unsuitable for IEC 61000-4-5 Level 4 or automotive load dump. | Select when board space is constrained and surge threat level is ≤600 W (e.g., consumer USB-C PD protection). |
| 1.5KE250A | Same VWM/VBR/VC ratings, axial-lead DO-201AD package, higher RθJA (100 °C/W), no MSL rating | Not compatible with automated SMT; requires through-hole assembly and manual rework; not suitable for high-density PCBs. | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required. |
Compared with SMBJ250A and 1.5KE250A, the 1.5SMC250A-E3/57T delivers superior surge robustness (1500 W vs. 600 W or 1500 W with inferior thermal management), SMT-ready packaging, and automotive-grade reliability - making it the preferred choice for production-grade industrial and automotive power protection.
Availability
1.5SMC250A-E3/57T is available at Aetrix Electronics and suitable for automotive ECU power rails, industrial motor drive inputs, telecom line interfaces, and renewable energy inverter DC links requiring stable component supply, RoHS-compliant sourcing, and AEC-Q101 validation.
Supply support for 1.5SMC250A-E3/57T 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, rectifiers, and protection devices for demanding industrial, automotive, and computing applications.
The 1.5SMC Series was engineered specifically for high-power, surface-mount transient suppression in harsh environments - emphasizing clamping precision, surge endurance, and process compatibility for automotive and industrial power systems.
FAQ
What is the maximum clamping voltage of the 1.5SMC250A-E3/57T under full-rated surge conditions?
The 1.5SMC250A-E3/57T exhibits a maximum clamping voltage (VC) of 344 V when subjected to its rated peak pulse current of 4.4 A using the standardized 10/1000 μs waveform. This value is measured per Figure 1 in Vishay Document 88303 and defines the highest voltage imposed on protected circuitry during worst-case transient events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the 1.5SMC250A-E3/57T suitable for automotive applications?
Yes, the 1.5SMC250A-E3/57T is AEC-Q101 qualified (as confirmed by suffix "B" variants like 1.5SMC250AHM3_B/H in the ordering table), supporting deployment in automotive power systems including engine control units, body electronics, and ADAS modules. Its glass-passivated junction, MSL Level 1 reflow rating, and –65 °C to +150 °C operating range meet stringent automotive reliability requirements.
What does the "-E3/57T" suffix indicate in 1.5SMC250A-E3/57T?
The "-E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads, while "/57T" specifies packaging in 7-inch plastic tape-and-reel format containing 850 units. This configuration ensures compatibility with high-speed pick-and-place equipment and satisfies environmental compliance mandates for industrial and consumer electronics manufacturing.
How does the thermal performance of the 1.5SMC250A-E3/57T affect PCB layout?
The 1.5SMC250A-E3/57T 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. To maintain TJ ≤ 150 °C under sustained 6.5 W power dissipation, designers must allocate adequate copper area and avoid routing heat-sensitive components nearby - underscoring the need for verified pad layout per Vishay's mechanical drawings.
Can the 1.5SMC250A-E3/57T be used in bidirectional configurations?
No - the 1.5SMC250A-E3/57T is strictly unidirectional, as indicated by the "A" suffix and absence of "CA" in the part number. Bidirectional operation requires the CA variant (e.g., 1.5SMC250CA). Using this part in reverse-biased AC applications will result in unintended conduction and potential failure due to lack of symmetrical breakdown characteristics.
1.5SMC250A-E3/57T 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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC250A-E3/57T FAQ
1.How can I place an order for 1.5SMC250A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC250A-E3/57T 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 1.5SMC250A-E3/57T reliable?
The price and inventory of 1.5SMC250A-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC250A-E3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC250A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC250A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC250A-E3/57T?
1.5SMC250A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC250A-E3/57T 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 1.5SMC250A-E3/57T?
For technical support, including 1.5SMC250A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC250A-E3/57T requirements.
6.How does Aetrix verify that 1.5SMC250A-E3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC250A-E3/57T 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 1.5SMC250A-E3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC250A-E3/57T?
All 1.5SMC250A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC250A-E3/57T, 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 1.5SMC250A-E3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC250A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC250A-E3/57T Tags
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