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Vishay General Semiconductor - Diodes Division 1.5SMC170CAHE3/57T
- Part No.:
- 1.5SMC170CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC170CAHE3/57T.pdf
- Description:
- TVS DIODE 145VWM 234VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,661
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Product details
Overview
1.5SMC170CAHE3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 145 V standoff voltage (VWM), and clamps to ≤234 V at 6.4 A peak pulse current. It provides robust ESD and surge protection for automotive sensor signal lines, industrial I/O ports, and telecom interface circuits.
For engineers reviewing the 1.5SMC170CAHE3/57T datasheet, 1.5SMC170CAHE3/57T pinout, 1.5SMC170CAHE3/57T application, or 1.5SMC170CAHE3/57T equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, 145 V reverse standoff rating, low incremental surge resistance, and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamped transient protector: when reverse voltage exceeds 145 V (VWM), it avalanches to limit transient energy by diverting surge current away from downstream circuitry. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints.
Designed for high-reliability environments, the 1.5SMC170CAHE3/57T features glass-passivated junctions, meets MSL Level 1 per J-STD-020, supports peak solder reflow up to 260 °C, and delivers stable clamping performance across -65 °C to +150 °C operating junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 145 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin for protected circuit. |
| VBR (Breakdown) | 162–179 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping) | 234 V at IPPM = 6.4 A - Peak voltage seen by protected IC during 10/1000 μs surge; determines minimum voltage headroom required. |
| PPPM | 1500 W - Surge energy handling capability under standardized 10/1000 μs waveform; validates suitability for lightning-induced surges. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and high-ambient industrial environments. |
| AEC-Q101 | Qualified - Certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
| Package | SMC (DO-214AB) - Standardized 7.75 mm × 6.22 mm surface-mount outline; compatible with industry-standard pick-and-place and reflow profiles. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | Either terminal serves as anode or cathode depending on transient polarity; no DC bias dependency. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Handles severe lightning-induced surges (IEC 61000-4-5 Level 4) without degradation when mounted per recommended 8.0 mm × 8.0 mm copper pads. |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules, ADAS sensor interfaces, and infotainment bus protection. |
| Glass passivated junction | Ensures long-term stability of breakdown voltage and leakage current under thermal cycling and humidity stress. |
| MSL Level 1 rating | Permits unlimited floor life and standard reflow without baking; simplifies manufacturing logistics. |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes overvoltage stress on protected ICs compared to higher-ratio TVS devices. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt surge energy before reaching signal conditioning ICs. Use Value: Maintains signal integrity during 12 V/24 V system transients while meeting ISO 7637-2 Pulse 1/2a/5a immunity requirements. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers in factory automation controllers exposed to motor drive noise and ground bounce. IC Role / Device Role / Timing Role: Differential-line TVS connected across A/B bus terminals to suppress common-mode surges without affecting data timing. Use Value: Prevents latch-up or permanent damage to MAX13487/MCP2561-level transceivers during 4 kV EFT bursts per IEC 61000-4-4. |
| Telecom Line Card Protection | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHYs and PoE injectors on telecom line cards from induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Primary-level TVS on RJ45 port side, coordinated with secondary GDT or polymer PTC for staged protection. Use Value: Limits let-through voltage to <234 V during 10/700 μs telecom surges (ITU-T K.21), preserving PHY silicon integrity. |
Use Scenario: Secondary-side transient suppression on 12 V/24 V DC input rails of smart home hubs and set-top boxes. IC Role / Device Role / Timing Role: Fast-response clamp absorbing residual switching spikes after primary-stage MOVs and filters. Use Value: Extends lifetime of DC-DC controllers (e.g., MP2451) by reducing repetitive overstress events from poor-quality wall adapters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA | Lower PPPM (600 W), same VWM (150 V), SMB package (smaller footprint, higher thermal resistance). | Limited to lower-energy surges; unsuitable for IEC 61000-4-5 Level 4 compliance. | Select when board space is constrained and surge threat level is limited to IEC 61000-4-4 EFT only. |
| 1.5KE150CA | Through-hole DO-201AE package, identical electrical specs but incompatible with SMT assembly. | Requires manual or wave-solder process; not viable for high-volume automated production. | Choose only for legacy through-hole designs or prototyping where rework flexibility outweighs production efficiency. |
Compared with SMBJ150CA and 1.5KE150CA, the 1.5SMC170CAHE3/57T uniquely combines AEC-Q101 qualification, 1500 W surge capacity, and SMC package compatibility-enabling automotive-grade protection in modern SMT production without layout or process compromise.
Availability
1.5SMC170CAHE3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, and telecom line card protection requiring stable component supply and long-term lifecycle support.
Supply support for 1.5SMC170CAHE3/57T 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, precision, and application-specific optimization.
The 1.5SMC Series targets high-energy transient suppression in automotive, industrial, and telecom systems-designed to replace older axial-leaded TVS families with surface-mount scalability and AEC-Q101 compliance.
FAQ
What does the "CA" suffix indicate in 1.5SMC170CAHE3/57T?
The "CA" suffix denotes a bidirectional configuration: the 1.5SMC170CAHE3/57T provides symmetrical clamping for both positive and negative transients, making it suitable for AC signal lines, differential buses like RS-485, and ungrounded sensor outputs. Unlike unidirectional variants (e.g., 1.5SMC170A), it has no cathode marking and functions identically regardless of voltage polarity applied across its terminals.
Is 1.5SMC170CAHE3/57T qualified for automotive use?
Yes, the 1.5SMC170CAHE3/57T is AEC-Q101 qualified, as confirmed by Vishay's documentation (Revision 09-Mar-2026, Doc. #88303). This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD-validating its suitability for under-hood and cabin-mounted automotive electronics such as body control modules and ADAS sensor interfaces.
What is the maximum clamping voltage of 1.5SMC170CAHE3/57T under surge conditions?
The maximum clamping voltage (VC) of the 1.5SMC170CAHE3/57T is 234 V at a peak pulse current (IPPM) of 6.4 A, measured with a 10/1000 μs waveform. This value is guaranteed per Vishay's datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
How does the SMC (DO-214AB) package of 1.5SMC170CAHE3/57T compare to SMB or SOD-123 in surge handling?
The SMC package of the 1.5SMC170CAHE3/57T offers significantly higher surge capability than SMB or SOD-123 due to larger die area and superior thermal dissipation: it delivers 1500 W PPPM versus 600 W for SMBJ-series and <100 W for SOD-123 devices. Its 7.75 mm × 6.22 mm footprint also supports robust copper pad layouts essential for IEC 61000-4-5 compliance.
Can 1.5SMC170CAHE3/57T be used in place of 1.5SMC150CA in an existing design?
Substituting 1.5SMC170CAHE3/57T for 1.5SMC150CA increases standoff voltage from 136 V to 145 V and clamping voltage from 207 V to 234 V. This raises protection threshold and may reduce clamping effectiveness for transients below 145 V; verify that protected circuitry tolerates the higher let-through voltage and confirm coordination with upstream protection stages before replacement.
1.5SMC170CAHE3/57T 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:
- -
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC170CAHE3/57T FAQ
1.How can I place an order for 1.5SMC170CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC170CAHE3/57T 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 1.5SMC170CAHE3/57T reliable?
The price and inventory of 1.5SMC170CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC170CAHE3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC170CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC170CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC170CAHE3/57T?
1.5SMC170CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC170CAHE3/57T 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 1.5SMC170CAHE3/57T?
For technical support, including 1.5SMC170CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC170CAHE3/57T requirements.
6.How does Aetrix verify that 1.5SMC170CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC170CAHE3/57T 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 1.5SMC170CAHE3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC170CAHE3/57T?
All 1.5SMC170CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC170CAHE3/57T, 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 1.5SMC170CAHE3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC170CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC170CAHE3/57T Tags
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