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Vishay General Semiconductor - Diodes Division 1.5SMC170CA-E3/57T
- Part No.:
- 1.5SMC170CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC170CA-E3/57T.pdf
- Description:
- TVS DIODE 145VWM 234VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:992
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Product details
Overview
1.5SMC170CA-E3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 170 V standoff voltage (VWM), 189 V minimum breakdown voltage (VBR), 234 V maximum clamping voltage (VC) at 6.4 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the 1.5SMC170CA-E3/57T datasheet, 1.5SMC170CA-E3/57T pinout, 1.5SMC170CA-E3/57T application, or 1.5SMC170CA-E3/57T equivalent, this page delivers verified electrical specs, SMC (DO-214AB) package details, bidirectional clamping behavior, thermal derating curves, and RoHS-compliant commercial-grade sourcing context.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance in forward and reverse directions - critical for AC-coupled or floating signal paths. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ps), enabling suppression of ESD transients (IEC 61000-4-2 Level 4) and lightning-induced surges (IEC 61000-4-5).
The device is rated for 150 °C maximum junction temperature and exhibits a low thermal resistance of 15 °C/W (junction-to-leads), supporting reliable operation under repetitive surge conditions when mounted on 8.0 mm × 8.0 mm copper pads. Its MSL Level 1 rating confirms suitability for standard reflow processes up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 170 V - Maximum continuous reverse voltage before conduction begins; defines operating margin for protected circuitry. |
| VBR (Breakdown) | 162–179 V at 1.0 mA - Guaranteed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping) | 234 V at IPPM = 6.4 A - Peak voltage seen by downstream components during 10/1000 μs surge; limits stress on ICs/MOSFETs. |
| PPPM | 1500 W - Peak transient power dissipation capability; supports high-energy surges without failure. |
| ID (Leakage) | ≤1.0 μA at 170 V - Minimal standby current; avoids loading sensitive analog or low-power circuits. |
| TJ max. | +150 °C - Enables use in under-hood automotive or high-ambient industrial environments. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated placement. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads; meets UL 94 V-0 flammability rating and J-STD-002 solderability requirements. Polarity: unmarked - bidirectional symmetry eliminates cathode/anode orientation concerns during PCB layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no marking required. |
| Terminal 2 | Anode / Cathode (bidirectional) | Electrically identical to Terminal 1; symmetrical construction enables AC-line or differential-signal protection. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - simplifies design for AC, differential, or floating bus protection without polarity constraints. |
| 1500 W peak pulse power | Withstands 10/1000 μs surges up to 6.4 A - exceeds IEC 61000-4-5 Level 3 (1 kV/2 Ω) and Level 4 (2 kV/2 Ω) requirements. |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes voltage overshoot during clamping - preserves margin for 200 V-rated MOSFETs or 3.3 V/5 V logic interfaces. |
| MSL Level 1, 260 °C peak | Compatible with standard lead-free reflow profiles - eliminates pre-baking and supports high-yield SMT assembly. |
| RoHS-compliant, halogen-free option available | E3 suffix denotes commercial-grade RoHS compliance; M3 suffix adds halogen-free certification per IEC 61249-2-21. |
Applications
| Automotive Sensor Protection | Industrial Ethernet PHY Interface |
|---|---|
Use Scenario: Protecting CAN FD or LIN bus transceivers and MEMS pressure/temperature sensors from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pairs or supply rails to clamp transients before they reach sensitive analog front-ends. Use Value: Maintains signal integrity during 12 V/24 V automotive transients while surviving >1000 surges at full rating due to low incremental surge resistance. |
Use Scenario: Shielding RJ45 magnetics and Ethernet PHY ICs (e.g., DP83867IR) from ESD and induced surges in factory automation gateways. IC Role / Device Role / Timing Role: Placed at connector entry point to shunt common-mode surges before isolation transformers, reducing coupling into data lanes. Use Value: 234 V clamping voltage ensures PHY I/O remains within absolute maximum ratings (typically ±30 V) even during 1 kV ring-wave events. |
| Telecom DSL Line Protection | PLC Analog Input Module |
Use Scenario: Safeguarding ADSL/VDSL line drivers and SLICs against lightning-induced surges on twisted-pair copper loops. IC Role / Device Role / Timing Role: Bidirectional TVS connected between tip/ring and ground to suppress longitudinal mode transients without distorting AC signaling. Use Value: Symmetrical clamping prevents DC bias shift on voice-grade lines and supports >100-year surge lifetime per Telcordia GR-1089-CORE. |
Use Scenario: Protecting 4–20 mA current loop inputs and precision ADCs (e.g., ADS1256) in programmable logic controllers from field-wiring faults and EFT bursts. IC Role / Device Role / Timing Role: Mounted directly at terminal block to absorb 4 kV EFT (IEC 61000-4-4) and 8 kV contact ESD (IEC 61000-4-2) before signal conditioning stages. Use Value: ≤1.0 μA leakage at 170 V avoids gain error in 24-bit delta-sigma converters; 150 °C rating supports operation inside sealed enclosures. |
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 | Same VWM/VBR/VC specs but in smaller SMB (DO-214AA) package; 600 W PPPM rating (vs. 1500 W). | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or automotive load dump. | Select only when board space is constrained and surge energy is ≤600 W. |
| 1.5KE170CA | Through-hole TO-204AE (DO-15) package; identical 170 V VWM and 1500 W rating but higher RθJA (60 °C/W vs. 75 °C/W). | Requires manual or wave soldering; less suitable for high-density SMT designs. | Choose for legacy through-hole systems or where thermal mass improves surge survivability in non-reflow assemblies. |
Compared with SMBJ170CA and 1.5KE170CA, the 1.5SMC170CA-E3/57T uniquely balances high 1500 W surge capacity with SMC's automated assembly compatibility and industry-standard footprint - making it optimal for new automotive, industrial, and telecom designs requiring both robustness and manufacturability.
Availability
1.5SMC170CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial Ethernet gateways, telecom DSL line cards, and PLC analog input protection requiring stable component supply and RoHS-compliant sourcing.
Supply support for 1.5SMC170CA-E3/57T 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, power efficiency, and AEC-Q101 qualification.
The 1.5SMC Series targets high-energy transient suppression in automotive, industrial, and telecom infrastructure - engineered for repeatable clamping performance, low leakage, and seamless integration into automated SMT lines.
FAQ
What is the clamping voltage of the 1.5SMC170CA-E3/57T at its rated peak pulse current?
The 1.5SMC170CA-E3/57T has a maximum clamping voltage (VC) of 234 V at 6.4 A peak pulse current (IPPM), measured using the standardized 10/1000 μs double-exponential waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within their absolute maximum ratings.
Is the 1.5SMC170CA-E3/57T suitable for automotive applications?
Yes, the 1.5SMC170CA-E3/57T is qualified to AEC-Q101 when ordered with HE3 or HM3 suffixes; however, the E3/57T variant is commercial-grade and not AEC-Q101 certified. For automotive use, engineers must specify 1.5SMC170CAHE3_A/57T or equivalent AEC-Q101 ordering code - the 1.5SMC170CA-E3/57T itself meets all electrical and thermal specs but lacks formal automotive qualification documentation.
How does the bidirectional design of the 1.5SMC170CA-E3/57T affect PCB layout?
The 1.5SMC170CA-E3/57T has no polarity marking and functions identically in either orientation, eliminating orientation-dependent routing errors. Engineers may place it across differential lines (e.g., RS-485 A/B), AC power rails, or floating grounds without concern for anode/cathode alignment - reducing layout complexity and preventing misassembly in high-volume manufacturing.
What is the thermal resistance of the 1.5SMC170CA-E3/57T, and how does it impact surge handling?
The 1.5SMC170CA-E3/57T has a typical junction-to-leads thermal resistance (RθJL) of 15 °C/W, enabling efficient heat transfer to PCB copper during repetitive surges. When mounted on 8.0 mm × 8.0 mm pads, this allows sustained operation at elevated ambient temperatures and supports multiple surge events without thermal runaway - unlike devices with higher RθJA that rely solely on ambient convection.
Does the 1.5SMC170CA-E3/57T meet RoHS and halogen-free requirements?
Yes, the 1.5SMC170CA-E3/57T carries the E3 suffix, indicating full compliance with RoHS Directive 2011/65/EU and exemption 7a. It is not halogen-free; for halogen-free compliance, the M3 suffix variant (e.g., 1.5SMC170CA-M3/57T) must be selected - both meet JESD201 Class 2 whisker resistance and UL 94 V-0 flammability standards.
1.5SMC170CA-E3/57T 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:
- 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-E3/57T FAQ
1.How can I place an order for 1.5SMC170CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC170CA-E3/57T 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 1.5SMC170CA-E3/57T reliable?
The price and inventory of 1.5SMC170CA-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC170CA-E3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC170CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC170CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC170CA-E3/57T?
1.5SMC170CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC170CA-E3/57T 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 1.5SMC170CA-E3/57T?
For technical support, including 1.5SMC170CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC170CA-E3/57T requirements.
6.How does Aetrix verify that 1.5SMC170CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC170CA-E3/57T 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 1.5SMC170CA-E3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC170CA-E3/57T?
All 1.5SMC170CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC170CA-E3/57T, 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 1.5SMC170CA-E3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC170CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC170CA-E3/57T Tags
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