My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC250A-M3/9AT
- Part No.:
- 1.5SMC250A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC250A-M3/9AT.pdf
- Description:
- TVS DIODE 214VWM 344VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:8,613
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC250A-M3/9AT 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 (IPPM), and 1500 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive power supplies, industrial motor drives, and telecom DC feed lines.
For engineers reviewing the 1.5SMC250A-M3/9AT datasheet, 1.5SMC250A-M3/9AT pinout, 1.5SMC250A-M3/9AT application, or 1.5SMC250A-M3/9AT equivalent, key selection criteria include clamping performance under 10/1000 μs transients, thermal resistance (RθJA = 75 °C/W), unidirectional polarity marking, SMC (DO-214AB) package compatibility, and halogen-free RoHS compliance per M3 suffix.
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 = 214 V).
Designed for repetitive 10/1000 μs surges at 0.01% duty cycle, it sustains 1500 W peak pulse power with derating above 25 °C (per Fig. 2), and handles 200 A non-repetitive forward surge (IFSM) - critical for inductive load switching events in 24–48 V industrial systems.
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 clamping threshold. |
| VBR (Breakdown) | 237–263 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping) | 344 V at IPPM = 4.4 A - Peak voltage seen by protected circuit during full-rated 10/1000 μs transient; determines minimum IC withstand rating. |
| PPPM | 1500 W - Surge energy handling capacity with standard 10/1000 μs waveform; enables robust protection against lightning-induced surges. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on recommended 8.0 mm × 8.0 mm copper pads; informs PCB thermal layout requirements. |
| Polarity | Unidirectional - Cathode marked by band; blocks forward current until VF ≈ 3.5 V at 100 A, enabling DC-biased line protection. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place and reflow. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case meeting UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side of protected line; establishes reference for clamping action during reverse transients. |
| Cathode | Clamping output / Surge current sink | Marked by band; sinks transient current to ground or return path when reverse voltage exceeds VBR; must route with low-inductance trace. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 24–48 V DC rails without cascaded stages. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response), improving protection margin for sensitive gate drivers. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets IPC-1752A material declaration requirements and automotive ELV directive for sustainable manufacturing. |
| MSL Level 1 (J-STD-020), 260 °C peak reflow | Supports single-pass lead-free reflow assembly without moisture sensitivity concerns or baking preconditioning. |
| AEC-Q101 qualified (HM3_B variant) | Validated for automotive powertrain and body electronics applications requiring zero-defect reliability under temperature cycling and HTRB stress. |
Applications
| Automotive Power Supply Protection | Industrial Motor Drive DC Bus |
|---|---|
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 across input filter capacitor to clamp surges before LDOs or microcontrollers. Use Value: Clamps to 344 V at 4.4 A, ensuring downstream 40 V-rated MOSFETs and 3.3 V logic remain within absolute maximum ratings during 1500 W surge events. |
Use Scenario: Safeguarding IGBT gate driver supply rails in variable-frequency drives exposed to inductive kickback from 3-phase motors. IC Role / Device Role / Timing Role: Mounted at driver IC input to suppress >1 kV/μs transients induced by fast-switching power stages. Use Value: Sub-1 ns response time and low clamping voltage limit gate-source overvoltage, preventing false triggering or destruction of 5–15 V logic-level drivers. |
| Telecom DC Feeder Line Protection | Renewable Energy Charge Controller Input |
Use Scenario: Shielding PoE-powered equipment and remote radio units from lightning-induced surges on -48 V DC distribution lines. IC Role / Device Role / Timing Role: First-stage protector upstream of DC-DC converters and Ethernet PHYs, coordinated with GDTs or MOVs. Use Value: 1500 W rating and 344 V clamping enable coordination with 600 V AC-rated secondary protectors while maintaining <100 V residual across protected ICs. |
Use Scenario: Securing solar charge controller inputs connected to PV arrays subject to open-circuit voltage spikes (>600 V) during partial shading or disconnect events. IC Role / Device Role / Timing Role: Parallel-connected TVS on MPPT input stage to clamp transients before buck converter MOSFETs and sensing amplifiers. Use Value: 214 V VWM allows operation up to 90% of 250 V nominal array voltage, while 344 V VC prevents overvoltage damage to 36 V-rated analog front-end components. |
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 | Lower PPPM (600 W), same VWM/VBR range, SMB package (smaller footprint, higher RθJA = 110 °C/W) | Less suitable for high-energy lightning surges; preferred where board space is constrained and surge levels are ≤2 kV. | Select SMBJ250A only if system-level testing confirms 600 W rating meets IEC 61000-4-5 immunity requirements. |
| 1.5KE250A | Through-hole DO-201 package, identical electrical specs but higher mounting thermal resistance and no MSL Level 1 rating | Not suitable for automated SMT production; limited to prototyping or legacy through-hole designs. | Choose 1.5KE250A only for hand-soldered repairs or legacy board rework where SMC footprint is unavailable. |
Compared with SMBJ250A and 1.5KE250A, the 1.5SMC250A-M3/9AT delivers superior surge robustness (1500 W vs. 600 W or 1500 W with inferior thermal management), SMT scalability, and halogen-free compliance - making it optimal for volume-manufactured automotive and industrial power systems requiring AEC-Q101 alignment and reflow compatibility.
Availability
1.5SMC250A-M3/9AT is available at Aetrix Electronics and suitable for automotive ECU protection, industrial motor drive DC bus safeguarding, and telecom DC feeder line surge suppression requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC250A-M3/9AT 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, rectifiers, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The 1.5SMC Series was engineered for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where compact size, repeatable clamping, and AEC-Q101 compliance are mandatory.
FAQ
What is the maximum clamping voltage of the 1.5SMC250A-M3/9AT under rated surge conditions?
The 1.5SMC250A-M3/9AT 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 Figure 1 in the Vishay datasheet (Document Number: 88303) and defines the upper voltage limit imposed on protected circuitry during full-rated transient events. The 1.5SMC250A-M3/9AT maintains this clamping performance across its specified operating temperature range.
Is the 1.5SMC250A-M3/9AT suitable for automotive applications requiring AEC-Q101 qualification?
The base 1.5SMC250A-M3/9AT is halogen-free and RoHS-compliant but not AEC-Q101 qualified. However, Vishay offers the AEC-Q101-qualified variant 1.5SMC250AHM3_B/I (or HM3_B/H), which shares identical electrical characteristics and SMC packaging. For automotive use, specify the HM3_B suffix - the 1.5SMC250A-M3/9AT itself requires validation per customer-specific AEC-Q101 test plans if used in safety-critical systems.
What is the thermal resistance and recommended PCB layout for optimal performance of the 1.5SMC250A-M3/9AT?
The 1.5SMC250A-M3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as defined in the Vishay datasheet. To achieve this rating, use minimum 2 oz. copper, thermal vias under pads, and avoid narrow traces. The 1.5SMC250A-M3/9AT must not be operated above 150 °C junction temperature under sustained power dissipation.
How does the 1.5SMC250A-M3/9AT differ from bidirectional TVS diodes like 1.5SMC250CA?
The 1.5SMC250A-M3/9AT is unidirectional and features a cathode band for polarity identification; it conducts only in reverse breakdown and blocks forward current until ~3.5 V. In contrast, 1.5SMC250CA is bidirectional with symmetrical clamping in both directions and no polarity marking. The 1.5SMC250A-M3/9AT is selected for DC-biased lines (e.g., +24 V supply), whereas the CA version suits AC or floating signal lines where polarity reversal may occur.
What is the surge current rating and test condition for the 1.5SMC250A-M3/9AT's 1500 W peak pulse power specification?
The 1500 W peak pulse power rating for the 1.5SMC250A-M3/9AT is defined using a 10/1000 μs double-exponential waveform per REA/IEC 61000-4-5, with a 0.01% duty cycle. At VWM = 214 V, this corresponds to a peak pulse current (IPPM) of 4.4 A. Derating applies above TA = 25 °C per Figure 2 in the Vishay datasheet, and the 1.5SMC250A-M3/9AT must be applied within its safe operating area to avoid thermal runaway.
1.5SMC250A-M3/9AT 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-M3/9AT FAQ
1.How can I place an order for 1.5SMC250A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC250A-M3/9AT 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-M3/9AT reliable?
The price and inventory of 1.5SMC250A-M3/9AT 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-M3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC250A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC250A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC250A-M3/9AT?
1.5SMC250A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC250A-M3/9AT 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-M3/9AT?
For technical support, including 1.5SMC250A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC250A-M3/9AT requirements.
6.How does Aetrix verify that 1.5SMC250A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC250A-M3/9AT 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-M3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC250A-M3/9AT?
All 1.5SMC250A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC250A-M3/9AT, 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-M3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC250A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC250A-M3/9AT Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
