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Vishay General Semiconductor - Diodes Division 1.5SMC170CA-M3/9AT
- Part No.:
- 1.5SMC170CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC170CA-M3/9AT.pdf
- Description:
- TVS DIODE 145VWM 234VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:8,996
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Product details
Overview
1.5SMC170CA-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 features a 170 V standoff voltage (VWM), 190 V minimum breakdown voltage (VBR), 1500 W peak pulse power (10/1000 μs), clamps to ≤234 V at 6.4 A, and operates from −65 °C to +150 °C - used in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC170CA-M3/9AT datasheet, 1.5SMC170CA-M3/9AT pinout, 1.5SMC170CA-M3/9AT application, or 1.5SMC170CA-M3/9AT equivalent, key selection criteria include bidirectional clamping capability, DO-214AB package thermal performance, AEC-Q101 qualification status, and compliance with UL 497B for telecom and automotive transient immunity.
Technical Context
This device is a glass-passivated, halogen-free, RoHS-compliant TVS diode optimized for fast response (<1 ns) to ESD, lightning-induced surges, and inductive switching transients. Its bidirectional architecture enables symmetrical clamping across both polarities without polarity marking on the SMC (DO-214AB) case.
Rated for 1500 W peak pulse power under 10/1000 μs waveform with 0.01% duty cycle, it delivers low incremental surge resistance and excellent clamping ratio (VC/VBR ≈ 1.23), while meeting MSL Level 1 per J-STD-020 and supporting reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 171 V - maximum continuous reverse voltage before conduction begins; defines safe operating margin below clamping threshold |
| VBR (Breakdown min) | 190 V at 1 mA - guaranteed minimum voltage at which device enters avalanche breakdown; ensures predictable turn-on behavior |
| VC (Clamping @ IPPM) | 234 V at 6.4 A - peak voltage seen by protected circuit during 10/1000 μs surge; determines downstream component stress level |
| PPPM | 1500 W - peak transient energy absorption capacity; supports robust protection against IEC 61000-4-5 Level 4 surges |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal footprint for 75 °C/W junction-to-ambient dissipation |
| Temperature Range | −65 °C to +150 °C - enables deployment in under-hood automotive, industrial motor drives, and outdoor telecom equipment |
| Compliance | UL 497B recognized (QVGQ2), AEC-Q101 qualified (HM3 suffix), JESD201 Class 2 whisker resistant - validated for automotive-grade reliability |
Pinout & Package
Package: SMC (DO-214AB), molded epoxy case with matte tin-plated leads; no polarity marking for bidirectional operation; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Bidirectional terminals conduct equally in either direction during overvoltage events; no cathode band marking required |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables single-device protection against severe transients per IEC 61000-4-5, reducing need for cascaded protection stages |
| Low clamping voltage (234 V @ 6.4 A) | Minimizes stress on downstream 200 V-rated MOSFETs or microcontrollers in 24 V/48 V industrial bus systems |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements for green manufacturing |
| AEC-Q101 qualified variant available | Supports automotive applications requiring validated reliability for engine control, ADAS sensors, and body electronics |
| MSL Level 1, 260 °C reflow compatible | Eliminates moisture sensitivity concerns and allows standard SMT assembly without baking or special handling |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pair to clamp common-mode surges without distorting data integrity. Use Value: Maintains signal fidelity under 10/1000 μs surges up to 1500 W while enabling compact placement near connector entry points. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring induced transients. IC Role / Device Role / Timing Role: Primary surge suppression element mounted directly at terminal block to shunt energy before reaching optocoupler inputs. Use Value: Prevents false triggering and latch-up in isolation stages by limiting transient voltage to ≤234 V during 1 kV/500 A surge events. |
| Telecom Power Line Protection | Renewable Energy Monitoring |
Use Scenario: Shielding PoE-powered Ethernet switches and base station RF front-end supplies from lightning-induced surges on AC/DC rails. IC Role / Device Role / Timing Role: Secondary-stage TVS after MOVs or GDTs to handle residual fast-rising edges and provide precise clamping. Use Value: Reduces let-through voltage to levels compatible with 200 V DC-DC converters and PMICs in telecom infrastructure. |
Use Scenario: Protecting voltage/current sensing circuits in solar inverter monitoring boards exposed to grid-side transients. IC Role / Device Role / Timing Role: Bidirectional clamping device across analog front-end inputs to prevent ADC saturation and op-amp damage. Use Value: Ensures measurement continuity during 10/1000 μs surges by limiting input voltage excursion to <234 V with sub-nanosecond response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170CA | Lower PPPM (600 W), same VWM/VBR range, SMB (DO-214AA) package with smaller thermal mass | Less suitable for repeated high-energy surges; limited to lower-duty-cycle environments like consumer IoT gateways | Select when board space is constrained and surge severity is moderate (IEC 61000-4-5 Level 2) |
| 1.5KE170CA | Through-hole TO-218 package, identical electrical specs but higher RθJA (100 °C/W), no MSL or AEC-Q101 rating | Not suitable for automated SMT production or automotive qualification; requires wave soldering and manual inspection | Choose only for legacy through-hole designs where rework flexibility outweighs thermal and reliability constraints |
Compared with 1.5SMC170CA-M3/9AT, SMBJ170CA offers reduced surge handling and thermal capability in a smaller footprint, while 1.5KE170CA trades SMT compatibility and automotive qualification for higher mechanical robustness in non-automated assemblies.
Availability
1.5SMC170CA-M3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom power line protection, and renewable energy monitoring systems requiring stable component supply and long-term manufacturability.
Supply support for 1.5SMC170CA-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, TVS devices, and power MOSFETs with emphasis on reliability and application-specific performance.
The 1.5SMC Series was engineered for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom markets where robustness, AEC-Q101 compliance, and standardized SMC packaging are critical.
FAQ
What is the clamping voltage of the 1.5SMC170CA-M3/9AT under a 10/1000 μs surge?
The 1.5SMC170CA-M3/9AT clamps to a maximum of 234 V when subjected to its rated peak pulse current of 6.4 A under a 10/1000 μs waveform. This value is measured per Fig. 1 and Table 1 in Vishay Document 88303 and defines the upper voltage limit imposed on protected circuitry during transient events.
Is the 1.5SMC170CA-M3/9AT suitable for automotive applications?
Yes - the 1.5SMC170CA-M3/9AT is halogen-free and RoHS-compliant, and its HM3 suffix indicates AEC-Q101 qualification. While the exact part number shown uses the M3 commercial-grade suffix, the HM3 variant (e.g., 1.5SMC170CAHM3_A/I) is explicitly qualified for automotive use per Vishay's ordering table and meets stress test requirements for temperature cycling, humidity, and mechanical shock.
Does the 1.5SMC170CA-M3/9AT have polarity markings on the package?
No - the 1.5SMC170CA-M3/9AT is a bidirectional TVS diode and carries no cathode band or polarity marking on the SMC (DO-214AB) case. Its symmetrical construction allows installation in either orientation across protected lines, simplifying layout and eliminating orientation errors during automated placement.
What is the thermal resistance of the 1.5SMC170CA-M3/9AT in standard mounting conditions?
The 1.5SMC170CA-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 specified in Vishay Document 88303. This value assumes standard FR-4 PCB with no internal copper planes and defines steady-state power derating above 25 °C ambient.
How does the 1.5SMC170CA-M3/9AT differ from unidirectional variants like 1.5SMC170A-M3/9AT?
The 1.5SMC170CA-M3/9AT is bidirectional with symmetrical clamping in both directions and no polarity marking, whereas 1.5SMC170A-M3/9AT is unidirectional, features a cathode band, and conducts only in reverse bias. Electrical parameters differ: the CA version has VWM = 171 V and VBR(min) = 190 V, while the A version has VWM = 145 V and VBR(min) = 162 V - making them non-interchangeable without circuit redesign.
1.5SMC170CA-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):
- 145V
- Voltage - Breakdown (Min):
- 162V
- Voltage - Clamping (Max) @ Ipp:
- 234V
- Current - Peak Pulse (10/1000µs):
- 6.4A
- 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)
1.5SMC170CA-M3/9AT FAQ
1.How can I place an order for 1.5SMC170CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC170CA-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 1.5SMC170CA-M3/9AT reliable?
The price and inventory of 1.5SMC170CA-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 1.5SMC170CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC170CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC170CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC170CA-M3/9AT?
1.5SMC170CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC170CA-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 1.5SMC170CA-M3/9AT?
For technical support, including 1.5SMC170CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC170CA-M3/9AT requirements.
6.How does Aetrix verify that 1.5SMC170CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC170CA-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 1.5SMC170CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC170CA-M3/9AT?
All 1.5SMC170CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC170CA-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 1.5SMC170CA-M3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC170CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC170CA-M3/9AT Tags
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