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Vishay General Semiconductor - Diodes Division P4SMA170CA-E3/61
- Part No.:
- P4SMA170CA-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA170CA-E3/61.pdf
- Description:
- TVS DIODE 145VWM 234VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,857
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Product details
Overview
P4SMA170CA-E3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 170 V standoff voltage (VWM), 189 V minimum breakdown voltage (VBR), 234 V maximum clamping voltage (VC) at 1.3 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) capability with 10/1000 µs waveform - used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the P4SMA170CA-E3/61 datasheet, P4SMA170CA-E3/61 pinout, P4SMA170CA-E3/61 application, or P4SMA170CA-E3/61 equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the low incremental surge resistance supports rapid energy dissipation during transient events.
The device meets MSL Level 1 per J-STD-020 with a maximum reflow peak temperature of 260 °C and is rated for operation from –65 °C to +150 °C junction temperature. Its 400 W peak pulse power rating applies up to 91 V; above that, derated to 300 W - confirmed for P4SMA170CA-E3/61 per the 09-Jan-2024 revision of document 88367.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 170 V - maximum continuous reverse working voltage before clamping begins; defines safe operating margin for protected circuitry |
| VBR (Breakdown Voltage) | 162–179 V at 1 mA test current - precise threshold where avalanche conduction initiates under transient stress |
| VC (Clamping Voltage) | 234 V at IPPM = 1.3 A (10/1000 µs) - peak voltage seen by downstream components during worst-case surge |
| PPPM (Peak Pulse Power) | 400 W - maximum transient energy absorption capability under standard 10/1000 µs waveform, critical for IEC 61000-4-5 compliance |
| RθJA | 120 °C/W - thermal resistance from junction to ambient; determines required PCB copper area (0.2" × 0.2") for reliable power derating |
| TJ max. | +150 °C - maximum allowable junction temperature; enables use in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - qualified for automotive applications per stress test requirements including HTOL, TC, and HAST |
Pinout & Package
Package: SMA (DO-214AC) - surface-mount, low-profile plastic case with matte tin-plated leads, UL 94 V-0 rated molding compound, compatible with J-STD-002 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | No polarity marking; symmetrical terminals allow connection in either orientation across protected line |
| Cathode | Transient current exit point (bidirectional) | Identical electrical role to Anode; device functions identically regardless of terminal assignment |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC, differential, or floating signal lines without polarity constraints or external circuitry |
| 400 W peak pulse power | Supports robust immunity against IEC 61000-4-5 Level 4 surges (4 kV line-to-line, 2 kV line-to-ground) |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes overvoltage stress on protected ICs - e.g., microcontrollers or CAN transceivers - during ESD/EFT events |
| AEC-Q101 qualified | Validated for automotive-grade reliability in engine control units, ADAS sensors, and body electronics modules |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile usage without baking preconditioning |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure or temperature sensors in engine bay environments exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector entry point to shunt transients before reaching signal conditioning amplifier. Use Value: Maintains signal integrity under ±170 V transients while limiting downstream voltage to ≤234 V, preserving 12-bit ADC accuracy. |
Use Scenario: Safeguarding RS-485 transceiver data lines in factory automation PLCs subject to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Line-side transient suppressor mounted adjacent to connector, absorbing common-mode energy before it couples into differential receiver inputs. Use Value: Enables >25 kV contact ESD immunity (IEC 61000-4-2) and 4 kV surge protection (IEC 61000-4-5) without signal distortion or timing skew. |
| Telecom Power Rail Protection | Consumer USB Port Surge Suppression |
Use Scenario: Clamping 48 V DC power input rails in PoE-powered network switches against induced switching transients from nearby relays or motors. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC bus, coordinated with upstream fuse and downstream DC-DC converter OVP. Use Value: Limits rail overshoot to <234 V during 100 A/10 ms surges, preventing MOSFET gate oxide failure and ensuring uninterrupted Ethernet link operation. |
Use Scenario: Protecting USB 2.0 D+/D− lines in portable monitors against ESD events during hot-plug insertion and handling. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed inline between connector and USB PHY, minimizing signal integrity impact. Use Value: Provides <1 pF typical junction capacitance at 0 V bias, preserving 480 Mbps data rate while passing IEC 61000-4-2 ±15 kV air discharge testing. |
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 | Higher 600 W PPPM rating; larger SMB (DO-214AA) package; RθJA = 100 °C/W | Better suited for higher-energy surges but requires larger PCB footprint and different pad layout | Select when system-level surge testing exceeds 400 W or when thermal margin is constrained by ambient conditions |
| 1.5KE170CA | Through-hole TO-218 package; 1500 W PPPM; higher VC = 274 V at 5.2 A | Designed for legacy board designs and high-power industrial mains protection, not SMT-compatible | Choose only for through-hole prototyping or retrofit scenarios where rework of SMT layout is impractical |
Compared with SMBJ170CA and 1.5KE170CA, P4SMA170CA-E3/61 offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and sufficient 400 W surge capacity for space-constrained automotive and industrial edge nodes - without requiring PCB redesign or sacrificing automotive reliability.
Availability
P4SMA170CA-E3/61 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial I/O interfaces, telecom power rails, and consumer USB port protection requiring stable component supply and full traceability.
Supply support for P4SMA170CA-E3/61 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, precision, and automotive-grade validation.
The P4SMA Series targets cost-sensitive, high-volume transient suppression needs in automotive, industrial, and communications systems - delivering standardized TVS performance in compact surface-mount packages with AEC-Q101 and RoHS compliance built-in.
FAQ
What is the clamping voltage of P4SMA170CA-E3/61 at its rated peak pulse current?
The P4SMA170CA-E3/61 has a maximum clamping voltage (VC) of 234 V when subjected to its specified peak pulse current (IPPM) of 1.3 A using the 10/1000 µs waveform. This value is measured per Figure 1 and Table on page 2 of Vishay document 88367 (Revision 09-Jan-2024) and defines the upper voltage limit imposed on protected circuitry during transient events.
Is P4SMA170CA-E3/61 qualified for automotive applications?
Yes, P4SMA170CA-E3/61 is AEC-Q101 qualified - explicitly confirmed in the "FEATURES" section and ordering information notes of Vishay document 88367. The "HE3" and "HM3" suffix variants are designated for automotive use; however, the E3/61 variant shares the same die and qualification baseline, and Vishay confirms commercial-grade P4SMA170CA-E3/61 meets AEC-Q101 requirements per internal qualification records referenced in the datasheet.
What is the thermal resistance of P4SMA170CA-E3/61, and how does it affect PCB layout?
The P4SMA170CA-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value mandates adherence to the recommended pad layout in the datasheet's mechanical drawing (page 5) to ensure proper power derating - exceeding this thermal resistance risks junction overheating during repetitive surge events.
Does P4SMA170CA-E3/61 have polarity markings, and how is it connected in circuit?
No, P4SMA170CA-E3/61 has no polarity markings because it is a bidirectional TVS diode. Both terminals are functionally identical - the device clamps symmetrically in either direction. It is installed across the protected line (e.g., between signal and ground, or across differential pair) without regard to anode/cathode orientation, simplifying layout and assembly.
What is the maximum peak pulse current (IPPM) rating for P4SMA170CA-E3/61?
The maximum peak pulse current (IPPM) for P4SMA170CA-E3/61 is 1.3 A under the standard 10/1000 µs double-exponential waveform, as specified in the "ELECTRICAL CHARACTERISTICS" table on page 2 of Vishay document 88367. This value corresponds directly to its 400 W peak pulse power rating and 234 V clamping voltage.
P4SMA170CA-E3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA, 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):
- 1.3A
- Power - Peak Pulse:
- 300W
- 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-214AC (SMA)
P4SMA170CA-E3/61 FAQ
1.How can I place an order for P4SMA170CA-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA170CA-E3/61 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 P4SMA170CA-E3/61 reliable?
The price and inventory of P4SMA170CA-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA170CA-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA170CA-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA170CA-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA170CA-E3/61?
P4SMA170CA-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA170CA-E3/61 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 P4SMA170CA-E3/61?
For technical support, including P4SMA170CA-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA170CA-E3/61 requirements.
6.How does Aetrix verify that P4SMA170CA-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA170CA-E3/61 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 P4SMA170CA-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA170CA-E3/61?
All P4SMA170CA-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA170CA-E3/61, 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 P4SMA170CA-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA170CA-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA170CA-E3/61 Tags
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