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Vishay General Semiconductor - Diodes Division 1.5SMC250AHM3_A/I
- Part No.:
- 1.5SMC250AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC250AHM3_A/I.pdf
- Description:
- TVS DIODE 214VWM 344VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,237
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Product details
Overview
1.5SMC250AHM3_A/I 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), 263 V maximum breakdown voltage (VBR), 344 V clamping voltage (VC) at 4.4 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive power supply rails, industrial motor drive I/O protection, and telecom DC feed lines.
For engineers reviewing the 1.5SMC250AHM3_A/I datasheet, 1.5SMC250AHM3_A/I pinout, 1.5SMC250AHM3_A/I application, or 1.5SMC250AHM3_A/I equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS-compliant HM3 packaging, SMC (DO-214AB) footprint compatibility, and verified clamping performance under repetitive 0.01% duty cycle surges.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging a glass-passivated silicon junction to achieve fast response (<1 ns) and low incremental surge resistance. Its thermal design supports operation up to +150 °C junction temperature, with RθJA = 75 °C/W on standard 8.0 mm × 8.0 mm copper pads.
The 1.5SMC250AHM3_A/I is rated for 200 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), and exhibits a +0.110 %/°C temperature coefficient of VBR - enabling stable overvoltage protection across wide ambient ranges in automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 214 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC/AC line tolerance margin. |
| VBR (Breakdown) | 237–263 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during transients. |
| VC (Clamping) | 344 V at IPPM = 4.4 A - Measured clamping voltage under 10/1000 μs surge; determines protected circuit's maximum stress level. |
| PPPM | 1500 W - Peak pulse power handling with 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 surge immunity. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 7.75 mm × 6.22 mm body and 2.06 mm height; compatible with automated placement and reflow. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; suffix HM3 denotes halogen-free compliance. |
| Operating TJ | –65 °C to +150 °C - Full industrial and extended automotive temperature range; enables under-hood and power-conversion use. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads; polarity indicated by cathode band on one end. Mounting requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal per JEDEC standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected line ground or low-side reference | Enables unidirectional clamping from line-to-ground; must be tied to lowest potential node in protected path. |
| Cathode | Current exit point in forward bias; marked with band; connected to protected line input | Defines clamping direction: reverse-biased during overvoltage events; absorbs surge energy into ground return path. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Supports IEC 61000-4-5 surge testing up to 4 kV (line-earth) without degradation when properly mounted. |
| Glass passivated junction | Ensures long-term stability and low leakage (<1 μA at VWM); critical for low-power sensor and battery-backed circuits. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles; no floor-life management required prior to assembly. |
| Halogen-free & RoHS-compliant (HM3) | Fulfills EU ELV and IPC-1752a material declarations; eliminates brominated flame retardants in molding compound. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a), improving system-level robustness. |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive I/O |
|---|---|
|
Use Scenario: Protecting 24 V DC power inputs in engine control units (ECUs) against load dump and alternator transients per ISO 16750-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and downstream DC/DC converter input. Use Value: Clamps 120 V load dump spikes to ≤344 V within <1 ns, preventing damage to 40 V-rated input MOSFETs and controllers. |
Use Scenario: Safeguarding analog feedback signals (e.g., current sense outputs) in servo drives exposed to switching noise and back-EMF coupling. IC Role / Device Role / Timing Role: Low-capacitance TVS installed at connector interface, shunting transient energy to chassis ground. Use Value: Limits induced voltage to <344 V while maintaining signal integrity via sub-100 pF junction capacitance at zero bias. |
| Telecom DC Feed Line Protection | Renewable Energy Inverter DC Link |
|
Use Scenario: Shielding PoE-powered equipment (e.g., remote radios) from lightning-induced surges on 48 V DC feed lines. IC Role / Device Role / Timing Role: Primary clamping device on DC input side, upstream of DC/DC isolation stage. Use Value: Absorbs 1500 W surge energy per IEC 61000-4-5, meeting EN 61000-4-5 Level 4 requirements without derating. |
Use Scenario: Protecting high-voltage DC link monitoring circuits in solar inverters subjected to grid-switching transients. IC Role / Device Role / Timing Role: Standoff-rated TVS on voltage divider network feeding isolated ADC inputs. Use Value: Maintains 214 V working voltage margin above nominal 200 V DC link, ensuring no false triggering during normal operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ250A-E3/52 | Lower PPPM (600 W), SMB package (smaller thermal mass), same VWM/VBR range | Not qualified to AEC-Q101; limited to commercial-grade industrial use | Select when board space is constrained and surge energy is ≤600 W; verify thermal derating at elevated TA. |
| 1.5KE250A | Through-hole DO-201 package, identical electrical specs but no AEC-Q101 or halogen-free rating | Requires wave soldering; unsuitable for fully SMT automotive production | Use only for prototyping or legacy through-hole designs where rework flexibility outweighs production efficiency. |
Compared with SMBJ250A-E3/52 and 1.5KE250A, the 1.5SMC250AHM3_A/I uniquely delivers automotive-grade reliability, halogen-free compliance, and full 1500 W surge capacity in an SMT-optimized SMC package - making it the preferred choice for volume automotive and industrial OEM programs requiring traceable, lifecycle-managed components.
Availability
1.5SMC250AHM3_A/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial motor drive I/O safeguarding, and telecom DC feed line surge suppression requiring stable component supply, AEC-Q101 validation, and halogen-free compliance.
Supply support for 1.5SMC250AHM3_A/I 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, TVS devices, and optoelectronics with emphasis on reliability, power efficiency, and automotive qualification.
The 1.5SMC Series was developed specifically for high-energy transient suppression in harsh-environment applications - targeting automotive, industrial, and telecom systems needing robust, standardized SMT TVS solutions with validated AEC-Q101 performance.
FAQ
What is the clamping voltage of the 1.5SMC250AHM3_A/I under a 10/1000 μs surge?
The 1.5SMC250AHM3_A/I 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.
Is the 1.5SMC250AHM3_A/I qualified for automotive applications?
Yes, the 1.5SMC250AHM3_A/I is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's 1.5SMC Series datasheet (Rev. 09-Mar-2026). It undergoes stress testing for temperature cycling, high-temperature reverse bias, and mechanical shock - meeting requirements for under-hood and powertrain ECUs.
What does the "HM3" suffix indicate for the 1.5SMC250AHM3_A/I?
The "HM3" suffix on the 1.5SMC250AHM3_A/I denotes halogen-free, RoHS-compliant construction with matte tin-plated leads, compliant with JESD201 Class 2 whisker resistance. It also signifies qualification to AEC-Q101 and packaging in 13" tape-and-reel (I-type) format with 3500 units per reel.
Can the 1.5SMC250AHM3_A/I be used in bidirectional configurations?
No, the 1.5SMC250AHM3_A/I is a unidirectional TVS diode, as indicated by its "A" suffix and cathode band marking. For bidirectional protection, Vishay specifies part numbers ending in "CA" (e.g., 1.5SMC250CA); using the 1.5SMC250AHM3_A/I in reverse-biased mode risks permanent junction failure.
What is the thermal resistance junction-to-ambient for the 1.5SMC250AHM3_A/I?
The 1.5SMC250AHM3_A/I has a typical thermal resistance of RθJA = 75 °C/W when mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This value assumes still air conditions and is critical for calculating junction temperature rise under sustained power dissipation.
1.5SMC250AHM3_A/I 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/I FAQ
1.How can I place an order for 1.5SMC250AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC250AHM3_A/I 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/I reliable?
The price and inventory of 1.5SMC250AHM3_A/I 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/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC250AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC250AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC250AHM3_A/I?
1.5SMC250AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC250AHM3_A/I 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/I?
For technical support, including 1.5SMC250AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC250AHM3_A/I requirements.
6.How does Aetrix verify that 1.5SMC250AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC250AHM3_A/I 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/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC250AHM3_A/I?
All 1.5SMC250AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC250AHM3_A/I, 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/I part is unused and in its original packaging.
Return procedure for 1.5SMC250AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC250AHM3_A/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
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