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Vishay General Semiconductor - Diodes Division P4SMA170CAHE3/61
- Part No.:
- P4SMA170CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA170CAHE3/61.pdf
- Description:
- TVS DIODE 145VWM 234VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,748
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Product details
Overview
P4SMA170CAHE3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in the P4SMA series, designed for clamping voltage transients on signal or power lines. It features a 170 V standoff voltage (VWM), 190 V minimum breakdown voltage (VBR), 400 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for automotive use - deployed to protect MOSFETs and sensor signal lines in industrial and automotive control units.
For engineers reviewing the P4SMA170CAHE3/61 datasheet, P4SMA170CAHE3/61 pinout, P4SMA170CAHE3/61 application, or P4SMA170CAHE3/61 equivalent, key selection criteria include bidirectional clamping capability at 170 V, 234 V maximum clamping voltage at rated IPPM, RoHS-compliant AEC-Q101 qualification, SMA (DO-214AC) package compatibility, and thermal resistance of 120 °C/W junction-to-ambient.
Technical Context
The P4SMA170CAHE3/61 operates as a bidirectional avalanche diode with symmetrical clamping in both polarities, enabling transient suppression without polarity sensitivity. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at VWM), while the 10/1000 μs waveform rating reflects standardized surge immunity testing per IEC 61000-4-5.
Thermally, it exhibits RθJA = 120 °C/W and RθJL = 30 °C/W, indicating dependency on PCB copper pad area for effective heat dissipation. The device is rated for TJ = –65 °C to +150 °C and meets MSL Level 1 per J-STD-020, supporting lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 170 V - Maximum continuous reverse voltage before clamping begins; defines operating margin for 24 V/48 V bus protection. |
| VBR (Breakdown Voltage) | 190–210 V at IT = 1 mA - Ensures reliable avalanche conduction onset within tight tolerance band for predictable clamping. |
| VC (Clamping Voltage) | 234 V at IPPM - Limits peak transient voltage seen by downstream ICs during 400 W surge events. |
| PPPM (Peak Pulse Power) | 400 W (10/1000 μs) - Supports robust immunity against lightning-induced surges and inductive switching spikes. |
| ID (Reverse Leakage) | <1.0 μA at VWM - Minimizes standby power loss and avoids false triggering in high-impedance signal paths. |
| TJ max. | +150 °C - Enables operation in under-hood automotive environments and industrial enclosures without derating. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per AEC standard. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); cathode band absent (bidirectional type).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | One terminal of symmetrical avalanche junction; conducts during negative transients. |
| Cathode | Transient current entry (positive polarity) | Other terminal of symmetrical junction; conducts during positive transients - no marking on bidirectional devices. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 400 W peak pulse power | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial and automotive interfaces. |
| AEC-Q101 qualification | Validates long-term reliability in automotive ECUs, body control modules, and ADAS sensor interfaces. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, simplifying SMT manufacturing. |
| Glass passivated junction | Ensures stable VBR over temperature and lifetime, with low leakage and repeatable clamping performance. |
Applications
| Automotive Sensor Signal Protection | Industrial CAN Bus Line Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control units exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamping transient energy before it reaches ADC input or op-amp front-end. Use Value: Prevents sensor signal corruption and microcontroller reset events during 12 V/24 V system transients. |
Use Scenario: Safeguarding CAN_H and CAN_L differential pair against ESD and coupled surges in factory automation nodes. IC Role / Device Role / Timing Role: Fast-response voltage clamp placed at connector interface to limit common-mode transients to <234 V. Use Value: Maintains CAN bit timing integrity and prevents transceiver latch-up during 4 kV contact ESD events. |
| Power Supply Input Stage Clamping | Telecom Line Interface Protection |
Use Scenario: Secondary-side transient suppression on 24 V DC input rails feeding PLC I/O modules and motor drivers. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing inductive kickback from relay coils and solenoid loads. Use Value: Eliminates need for additional RC snubbers while maintaining <100 ns response time and low clamping overshoot. |
Use Scenario: Protecting Ethernet PHY or RS-485 transceivers connected to outdoor telecom cabinets subject to lightning-induced surges. IC Role / Device Role / Timing Role: First-line defense clamping common-mode transients on twisted-pair data lines before isolation barrier. Use Value: Achieves >400 W surge handling with <234 V clamping, preserving signal integrity across 10/100BASE-TX links. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170CA | Same VWM/VBR/VC specs but SMB (DO-214AA) package - 2.5 mm wider, higher RθJA (140 °C/W). | Requires larger PCB footprint; less suitable for dense automotive modules where space is constrained. | Select when existing layout uses SMB footprint or higher thermal mass is acceptable. |
| 1.5KE170CA | Through-hole TO-218 package; 1.5 kW PPPM rating but slower response due to higher junction capacitance (~100 pF vs. ~30 pF). | Not suitable for high-speed data lines; limited to power rail protection only. | Choose only for legacy through-hole designs or where higher single-pulse energy absorption is prioritized over speed. |
Compared with SMBJ170CA and 1.5KE170CA, the P4SMA170CAHE3/61 offers optimal balance of compact SMA footprint, AEC-Q101 qualification, fast response, and 400 W surge capability - making it preferred for new automotive and space-constrained industrial designs requiring surface-mount reliability.
Availability
P4SMA170CAHE3/61 is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC I/O modules, and telecom line interface circuits requiring stable component supply, AEC-Q101 compliance, and consistent surge performance across production batches.
Supply support for P4SMA170CAHE3/61 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 was developed specifically for surface-mount transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where compact size, AEC-Q101 compliance, and repeatable clamping performance are critical.
FAQ
What is the clamping voltage of P4SMA170CAHE3/61 at its rated peak pulse current?
The P4SMA170CAHE3/61 has a maximum clamping voltage (VC) of 234 V at its rated peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured at the specified IPPM derived from its 400 W peak pulse power rating and ensures downstream circuitry remains below destructive voltage thresholds during surge events.
Is P4SMA170CAHE3/61 suitable for automotive applications?
Yes, P4SMA170CAHE3/61 is AEC-Q101 qualified and carries the HE3 suffix denoting RoHS-compliant and automotive-grade qualification. It is validated for temperature cycling, high-temperature reverse bias, and ESD stress - making it appropriate for engine control units, body electronics, and ADAS sensor interfaces.
What does the "CA" suffix indicate in P4SMA170CAHE3/61?
The "CA" suffix in P4SMA170CAHE3/61 designates a bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P4SMA170A), it has no polarity marking and functions identically in either direction.
What is the thermal resistance of P4SMA170CAHE3/61, and how does it affect PCB layout?
P4SMA170CAHE3/61 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. To maintain safe junction temperature under repetitive surges, designers must allocate adequate copper area and avoid excessive trace length between the device and ground/power planes.
How does P4SMA170CAHE3/61 differ from P4SMA170AHE3/61?
P4SMA170CAHE3/61 is bidirectional with symmetrical clamping, while P4SMA170AHE3/61 is unidirectional and requires correct polarity orientation. The "CA" version supports AC-coupled or floating signal lines without concern for anode/cathode placement, whereas the "A" version must be oriented with the cathode band toward the protected circuit's positive rail.
P4SMA170CAHE3/61 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:
- 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):
- 1.3A
- Power - Peak Pulse:
- 300W
- 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-214AC (SMA)
P4SMA170CAHE3/61 FAQ
1.How can I place an order for P4SMA170CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA170CAHE3/61 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 P4SMA170CAHE3/61 reliable?
The price and inventory of P4SMA170CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA170CAHE3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA170CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA170CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA170CAHE3/61?
P4SMA170CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA170CAHE3/61 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 P4SMA170CAHE3/61?
For technical support, including P4SMA170CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA170CAHE3/61 requirements.
6.How does Aetrix verify that P4SMA170CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA170CAHE3/61 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 P4SMA170CAHE3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA170CAHE3/61?
All P4SMA170CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA170CAHE3/61, 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 P4SMA170CAHE3/61 part is unused and in its original packaging.
Return procedure for P4SMA170CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA170CAHE3/61 Tags
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