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Vishay General Semiconductor - Diodes Division 1.5SMC250A-E3/9AT
- Part No.:
- 1.5SMC250A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC250A-E3/9AT.pdf
- Description:
- TVS DIODE 214VWM 344VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:5,676
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Product details
Overview
1.5SMC250A-E3/9AT 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, and 1500 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive power supplies and industrial motor drive I/O protection.
For engineers reviewing the 1.5SMC250A-E3/9AT datasheet, 1.5SMC250A-E3/9AT pinout, 1.5SMC250A-E3/9AT application, or 1.5SMC250A-E3/9AT equivalent, key selection criteria include clamping performance under 10/1000 μs transients, thermal resistance (RθJA = 75 °C/W), unidirectional polarity marking, RoHS-compliant matte tin plating, and SMC (DO-214AB) package compatibility with automated placement.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR (237–263 V), it avalanches to limit transient energy by diverting surge current to ground. Its glass-passivated junction ensures stable breakdown and low leakage (<1 μA at 214 V), while MSL Level 1 rating supports lead-free reflow up to 260 °C.
The device sustains 200 A non-repetitive forward surge (8.3 ms half-sine) and exhibits 0.110 %/°C temperature coefficient of VBR - critical for stable clamping across -65 °C to +150 °C operating range. Thermal resistance (RθJL = 15 °C/W) enables effective heat dissipation through PCB copper pads per JEDEC-standard layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 214 V - maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (Breakdown) | 237–263 V at 1 mA - precise avalanche initiation range ensuring predictable turn-on during overvoltage events |
| VC (Clamping) | 344 V at IPPM = 4.4 A - peak voltage seen by protected circuit during 10/1000 μs surge; determines downstream component stress |
| PPPM | 1500 W - peak transient power handling capability with standard 10/1000 μs waveform; validates robustness against lightning/inductive spikes |
| RθJA | 75 °C/W - junction-to-ambient thermal resistance on standard 8 mm × 8 mm copper pads; guides PCB thermal design for reliability |
| Polarity | Unidirectional - cathode marked by band; blocks forward conduction, clamps only reverse transients - suited for DC-biased rails |
| Package | SMC (DO-214AB) - surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; optimized for high-current routing and reflow compatibility |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage - must route with low-inductance path |
| Anode | Reference node | Typically tied to system ground or low-impedance return; completes clamping path - requires solid grounding plane |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables protection against severe transients like ISO 7637-2 Pulse 5a (load dump) in 24 V automotive systems without derating |
| Glass-passivated junction | Ensures stable VBR over lifetime and temperature; eliminates parameter drift due to moisture or contamination in harsh environments |
| MSL Level 1 rating | Supports single-reflow assembly at 260 °C peak without preconditioning - reduces manufacturing complexity and cost |
| RoHS-compliant E3 suffix | Meets EU Directive 2011/65/EU and China RoHS; contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD or switching noise), improving protection fidelity |
Applications
| Automotive Power Supply Protection | Industrial Motor Drive I/O |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs from load dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Shunt TVS placed between battery rail and ground, clamping surges above 214 V before they reach DC-DC converters or microcontrollers. Use Value: Limits peak voltage to 344 V at 4.4 A, preventing damage to 36 V-rated input stages and enabling compliance with automotive EMC requirements. |
Use Scenario: Safeguarding analog sensor inputs and digital control signals in variable-frequency drives exposed to inductive kickback. IC Role / Device Role / Timing Role: Unidirectional clamp on encoder feedback lines or analog current sense paths, suppressing ±1 kV EFT bursts per IEC 61000-4-4. Use Value: Fast response (<1 ns) and low clamping ratio (VC/VBR ≈ 1.45) preserve signal integrity while absorbing 1500 W pulses without degradation. |
| Telecom Line Interface | Consumer Appliance Power Input |
Use Scenario: Shielding Ethernet PHY power pins and RS-485 bus lines from lightning-induced surges in outdoor base stations. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V PoE injectors or data line terminations, coordinated with GDTs for staged protection. Use Value: 214 V VWM allows operation across wide input range while 344 V VC prevents latch-up in transceivers during 10/1000 μs threats. |
Use Scenario: Guarding AC-DC adapter primary-side rectifier outputs and secondary-side 12 V rails in smart home hubs against mains-borne surges. IC Role / Device Role / Timing Role: Secondary-side unidirectional suppressor on regulated DC outputs, complementing MOV-based primary protection. Use Value: RoHS-compliant E3/9AT tape-and-reel format supports high-volume SMT assembly; 75 °C/W RθJA enables thermal stability on compact PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ250A | Same VWM (214 V) and VC (344 V), but lower PPPM (600 W); SMB package (smaller footprint, higher RθJA = 85 °C/W) | Limited to lower-energy transients; unsuitable for automotive load dump where 1500 W is mandated | Select 1.5SMC250A-E3/9AT when full 1500 W rating and DO-214AB mechanical robustness are required |
| 1.5KE250A | Through-hole TO-204AE (DO-41); identical electrical specs but incompatible with SMT assembly and higher profile | Requires manual or wave soldering; not viable for automated production or space-constrained designs | Choose 1.5SMC250A-E3/9AT for surface-mount scalability, reflow compatibility, and board-level automation |
Compared with SMBJ250A and 1.5KE250A, the 1.5SMC250A-E3/9AT uniquely delivers 1500 W surge capacity in an SMT-optimized SMC package with MSL Level 1 process compatibility - making it the only choice for high-reliability, high-volume automotive and industrial applications requiring both performance and manufacturability.
Availability
1.5SMC250A-E3/9AT is available at Aetrix Electronics and suitable for automotive electronics, industrial motor controls, telecom infrastructure, and consumer appliance power systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for 1.5SMC250A-E3/9AT 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, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered for high-power transient suppression in demanding environments - targeting automotive, industrial, and telecom applications where consistent clamping, thermal resilience, and AEC-Q101 qualification matter.
FAQ
What is the maximum clamping voltage of the 1.5SMC250A-E3/9AT under a 10/1000 μs surge?
The 1.5SMC250A-E3/9AT has a maximum clamping voltage (VC) of 344 V when subjected to its rated peak pulse current of 4.4 A with a 10/1000 μs waveform. This value is measured per Figure 1 in Vishay Document 88303 and defines the upper voltage limit imposed on protected circuitry during standardized surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the 1.5SMC250A-E3/9AT suitable for automotive applications requiring AEC-Q101 qualification?
No - the 1.5SMC250A-E3/9AT carries the commercial-grade E3 suffix and is not AEC-Q101 qualified. For automotive use, Vishay specifies the HM3_B or HE3_B variants (e.g., 1.5SMC250AHM3_B/I). The 1.5SMC250A-E3/9AT is rated for industrial and telecom applications with operating junction temperatures from -65 °C to +150 °C but lacks the extended test validation required for automotive qualification.
What does the "/9AT" suffix indicate in 1.5SMC250A-E3/9AT?
The "/9AT" suffix denotes packaging: 13-inch diameter plastic tape-and-reel with 3500 units per reel. This format supports high-speed pick-and-place assembly and is distinct from "/57T" (7-inch reel, 850 units). The "E3" prefix confirms RoHS-compliant, commercial-grade construction with matte tin plating - verified per JESD 22-B102 and J-STD-002.
How does the thermal resistance of the 1.5SMC250A-E3/9AT affect PCB layout?
The 1.5SMC250A-E3/9AT has a typical RθJA of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. To maintain junction temperature below 150 °C under worst-case 6.5 W steady-state dissipation, designers must allocate ≥64 mm² of 2-oz copper per pad and avoid thermal isolation - undersized pads or thin traces will cause excessive temperature rise and premature failure.
Can the 1.5SMC250A-E3/9AT be used in bidirectional configurations?
No - the 1.5SMC250A-E3/9AT is strictly unidirectional, indicated by the "A" suffix and cathode band marking. Bidirectional operation requires the "CA" suffix (e.g., 1.5SMC250CA). Using this part in AC-coupled or symmetrical signal lines would result in forward conduction during negative half-cycles, causing malfunction or damage.
1.5SMC250A-E3/9AT 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-E3/9AT FAQ
1.How can I place an order for 1.5SMC250A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC250A-E3/9AT 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-E3/9AT reliable?
The price and inventory of 1.5SMC250A-E3/9AT 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-E3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC250A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC250A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC250A-E3/9AT?
1.5SMC250A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC250A-E3/9AT 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-E3/9AT?
For technical support, including 1.5SMC250A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC250A-E3/9AT requirements.
6.How does Aetrix verify that 1.5SMC250A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC250A-E3/9AT 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-E3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC250A-E3/9AT?
All 1.5SMC250A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC250A-E3/9AT, 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-E3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC250A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC250A-E3/9AT Tags
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