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Vishay General Semiconductor - Diodes Division 1.5SMC220CA-M3/9AT
- Part No.:
- 1.5SMC220CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC220CA-M3/9AT.pdf
- Description:
- TVS DIODE 185VWM 328VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,139
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Product details
Overview
1.5SMC220CA-M3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It delivers 1500 W peak pulse power (10/1000 μs), clamps at 328 V under 4.6 A peak pulse current, and features a 185 V standoff voltage (VWM) with ≤1.0 μA leakage at 25 °C. It is used to protect automotive sensor interfaces, industrial I/O ports, and telecom line cards against lightning-induced transients and inductive switching spikes.
For engineers reviewing the 1.5SMC220CA-M3/9AT datasheet, 1.5SMC220CA-M3/9AT pinout, 1.5SMC220CA-M3/9AT application, or 1.5SMC220CA-M3/9AT equivalent, key selection criteria include bidirectional clamping capability, SMC (DO-214AB) package compatibility, 1500 W surge rating, junction temperature range (–65 °C to +150 °C), and halogen-free RoHS compliance per M3 suffix.
Technical Context
This device operates as a voltage-clamped crowbar during transient events: when reverse voltage exceeds its 209–231 V breakdown range (tested at 1 mA), it avalanches rapidly (<1 ns response) to limit downstream voltage to ≤328 V. Its bidirectional symmetry enables protection on AC-coupled or floating lines without polarity concerns.
The 1.5SMC220CA-M3/9AT uses a glass-passivated silicon junction housed in an SMC (DO-214AB) package rated for MSL Level 1 (260 °C reflow peak), with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102. Thermal resistance is 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-leads).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 1500 W - sustains single high-energy surges typical of lightning (IEC 61000-4-5 Level 4) or load dump without failure |
| Standoff Voltage (VWM) | 185 V - maximum continuous operating voltage before significant leakage; ensures no conduction during normal 170 VAC-derived rails |
| Breakdown Voltage (VBR) | 209–231 V at 1 mA - tight tolerance band defines precise clamping onset; critical for protecting 200 V-rated ICs |
| Clamping Voltage (VC) | 328 V at 4.6 A IPPM - actual voltage seen by protected circuit during worst-case surge; determines safe margin for downstream components |
| Leakage Current (ID) | ≤1.0 μA at 185 V - negligible standby power loss and signal integrity impact in high-impedance sensor or data lines |
| Junction Temperature Range | –65 °C to +150 °C - supports operation in under-hood automotive, industrial enclosures, and outdoor telecom equipment |
| Package | SMC (DO-214AB) - industry-standard 2-pin surface-mount outline (7.75 × 6.22 × 2.62 mm) compatible with automated pick-and-place and reflow |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance. Bidirectional construction means no polarity marking; both terminals are functionally symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal may serve as anode or cathode depending on transient polarity; no fixed polarity required in layout |
| Terminal 2 | Anode / Cathode (bidirectional) | Electrically identical to Terminal 1; device functions identically regardless of orientation on PCB |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables robust protection against severe transients (e.g., ISO 7637-2 Pulse 5a) without derating in compact layouts |
| Glass-passivated chip junction | Ensures stable VBR over lifetime and immunity to humidity/moisture-induced parameter drift in harsh environments |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profiles (peak 260 °C) without baking-reduces manufacturing overhead |
| Halogen-free & RoHS-compliant (M3 suffix) | Fulfills environmental compliance requirements for automotive and industrial end-equipment without sacrificing electrical performance |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD or relay bounce), improving protection margin |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus nodes and temperature/pressure sensors exposed to load dump and jump-start transients in engine control units. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pair or supply rail to clamp ±200 V surges before they reach precision ADC front-end or microcontroller I/O. Use Value: Maintains signal integrity during 12 V/24 V system transients while surviving repeated 1500 W pulses-validated per AEC-Q101 when specified with HE3/HM3 suffixes. |
Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers subjected to field wiring faults and electrostatic discharge. IC Role / Device Role / Timing Role: Placed between input terminals and ground to shunt surge energy away from op-amp input stages and isolation amplifiers. Use Value: 328 V clamping voltage provides ≥30 V margin above 300 VDC common-mode surge test levels (IEC 61000-4-5), preventing latch-up or damage. |
| Telecom Line Card Protection | AC-DC Power Supply Input |
Use Scenario: Shielding Ethernet PHYs and DSL line drivers from induced surges on outdoor copper pairs in central office or remote terminal equipment. IC Role / Device Role / Timing Role: Bidirectional TVS mounted at connector entry point to absorb longitudinal mode surges before reaching transformer-coupled interface ICs. Use Value: Symmetric clamping ensures equal protection for positive and negative half-cycles of AC-coupled signals-no polarity-dependent design constraints. |
Use Scenario: Secondary-side transient suppression on DC output rails of industrial switch-mode power supplies feeding sensitive control boards. IC Role / Device Role / Timing Role: Connected between +VOUT and GND to clamp flyback spikes from relay coils or motor drivers sharing the same supply. Use Value: 185 V standoff allows use on 160 VDC outputs (e.g., PoE++ or 48 V telecom systems with ripple), with 328 V clamping preserving downstream 350 V-rated capacitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ220CA | Lower peak power (600 W), same VWM/VBR range, SMB (DO-214AA) package (smaller footprint, higher thermal resistance) | Not suitable for 1500 W surge events; limited to lower-energy IEC 61000-4-2/4-4 environments | Select only if board space is constrained and surge threat level is ≤600 W (e.g., consumer-grade USB or audio interfaces) |
| 1.5KE220CA | Same electrical specs but axial-leaded DO-15 package; higher RθJA (~100 °C/W); not surface-mount | Requires through-hole assembly and manual soldering; incompatible with automated SMT lines | Choose only for prototyping, low-volume repair, or legacy through-hole designs where rework flexibility outweighs production efficiency |
Compared with SMBJ220CA and 1.5KE220CA, the 1.5SMC220CA-M3/9AT uniquely combines 1500 W surge handling, SMC surface-mount compatibility, and halogen-free compliance-making it the optimal choice for high-reliability, volume-manufactured automotive and industrial power electronics.
Availability
1.5SMC220CA-M3/9AT is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, and telecom line card protection requiring stable component supply, long-term lifecycle support, and full traceability.
Supply support for 1.5SMC220CA-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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive qualification.
The 1.5SMC Series was engineered specifically for high-power transient suppression in space-constrained, high-reliability applications-including automotive powertrain, industrial automation, and infrastructure communications-where consistent clamping and AEC-Q101 readiness matter.
FAQ
What is the clamping voltage of the 1.5SMC220CA-M3/9AT under maximum rated surge current?
The 1.5SMC220CA-M3/9AT has a maximum clamping voltage (VC) of 328 V when subjected to its peak pulse current (IPPM) of 4.6 A using the standard 10/1000 μs waveform. This value is measured at TJ = 25 °C and defines the upper voltage limit imposed on protected circuits during worst-case transient events. The 1.5SMC220CA-M3/9AT maintains this clamping performance across its full operating temperature range, with minimal derating up to +125 °C.
Is the 1.5SMC220CA-M3/9AT suitable for automotive applications?
Yes-the 1.5SMC220CA-M3/9AT is halogen-free and RoHS-compliant per its M3 suffix, and the underlying 1.5SMC220CA device is AEC-Q101 qualified when ordered with HE3 or HM3 suffixes (e.g., 1.5SMC220CAHE3_A). While the M3/9AT variant itself is commercial-grade, its electrical specs, thermal robustness (–65 °C to +150 °C), and SMC package make it suitable for non-safety-critical automotive subsystems like body control modules and infotainment power rails.
How does the bidirectional configuration of the 1.5SMC220CA-M3/9AT affect PCB layout?
The 1.5SMC220CA-M3/9AT has no polarity marking and functions identically regardless of orientation, simplifying PCB layout for AC-coupled or floating lines. Unlike unidirectional TVS diodes, it eliminates the need for orientation verification during placement or rework. This symmetry also avoids risk of incorrect installation in high-volume SMT assembly-reducing defect rates and eliminating polarity-related field failures in differential or transformer-isolated interfaces.
What is the thermal resistance of the 1.5SMC220CA-M3/9AT, and how does it impact power dissipation?
The 1.5SMC220CA-M3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-leads resistance (RθJL) of 15 °C/W. Under continuous DC conditions, its 6.5 W power dissipation rating assumes TA = 50 °C on an infinite heatsink; however, in real-world PCB layouts with 8 mm × 8 mm copper pads per terminal, derating curves (Fig. 2) show usable power drops to ~4.2 W at 100 °C ambient. The 1.5SMC220CA-M3/9AT's low RθJL supports effective heat transfer to copper planes during short-duration surges.
Does the 1.5SMC220CA-M3/9AT meet any international surge immunity standards?
The 1.5SMC220CA-M3/9AT is designed to support compliance with IEC 61000-4-5 (surge immunity) Level 4 (4 kV line-earth, 2 kV line-line) when applied with appropriate PCB layout (e.g., minimized trace inductance, proper grounding). Its 1500 W peak pulse rating directly aligns with the energy content of the 10/1000 μs waveform defined in that standard. While the device itself is not "certified" to IEC standards, its parameters enable system-level validation-confirmed by Vishay's application notes for telecom and industrial equipment using the 1.5SMC series.
1.5SMC220CA-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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 185V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 328V
- Current - Peak Pulse (10/1000µs):
- 4.6A
- 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)
1.5SMC220CA-M3/9AT FAQ
1.How can I place an order for 1.5SMC220CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC220CA-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 1.5SMC220CA-M3/9AT reliable?
The price and inventory of 1.5SMC220CA-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 1.5SMC220CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC220CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC220CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC220CA-M3/9AT?
1.5SMC220CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC220CA-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 1.5SMC220CA-M3/9AT?
For technical support, including 1.5SMC220CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC220CA-M3/9AT requirements.
6.How does Aetrix verify that 1.5SMC220CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC220CA-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 1.5SMC220CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC220CA-M3/9AT?
All 1.5SMC220CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC220CA-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 1.5SMC220CA-M3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC220CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC220CA-M3/9AT Tags
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