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Vishay General Semiconductor - Diodes Division P4SMA170AHE3/61
- Part No.:
- P4SMA170AHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA170AHE3/61.pdf
- Description:
- TVS DIODE 145VWM 234VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,701
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Product details
Overview
P4SMA170AHE3/61 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 170 V standoff voltage (VWM), 195 V minimum breakdown voltage (VBR), 234 A peak pulse current (IPPM) at 10/1000 µs, and 400 W peak pulse power capability - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and automotive control modules.
For engineers reviewing the P4SMA170AHE3/61 datasheet, P4SMA170AHE3/61 pinout, P4SMA170AHE3/61 application, or P4SMA170AHE3/61 equivalent, key selection criteria include clamping voltage (VC = 234 V), unidirectional polarity with cathode band marking, AEC-Q101 qualification, MSL Level 1 rating, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
The P4SMA170AHE3/61 operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology for stable reverse breakdown behavior under transient overvoltage events. Its clamping action begins at VBR ≥ 195 V and limits voltage to ≤ 234 V at 234 A, with low incremental surge resistance ensuring minimal voltage overshoot during fast transients.
Thermally, it exhibits RθJA = 120 °C/W and RθJL = 30 °C/W, enabling reliable operation up to TJ = +150 °C. The device is rated for 40 A non-repetitive forward surge current (IFSM) and meets J-STD-020 MSL Level 1 with 260 °C reflow peak temperature tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 170 V - maximum continuous reverse working voltage before clamping initiates |
| VBR (Breakdown Voltage) | 195–215 V at IT = 1 mA - guaranteed avalanche conduction threshold for transient suppression |
| VC (Clamping Voltage) | 234 V at IPPM = 234 A (10/1000 µs) - peak voltage seen by protected circuit during worst-case surge |
| PPPM (Peak Pulse Power) | 400 W - transient energy absorption capacity under standard 10/1000 µs waveform |
| ID (Reverse Leakage) | 1.0 µA max at VWM - negligible standby current, preserving system efficiency |
| TJ max | +150 °C - maximum junction temperature supporting operation in under-hood automotive and industrial environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability per stress test requirements |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode identified by black band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side of protected line; defines unidirectional conduction path |
| Cathode | Avalanche clamping node / Transient sink | Connected to higher-potential side (e.g., VBUS); conducts surge current to ground during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 400 W Peak Pulse Power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges without derating above 91 V |
| AEC-Q101 Qualified | Validated for automotive powertrain and body electronics requiring extended temperature cycling and humidity exposure |
| MSL Level 1, 260 °C Reflow Compatible | Supports single-pass lead-free reflow assembly without moisture sensitivity concerns |
| Glass-Passivated Junction | Ensures stable VBR and low leakage across 1000+ thermal cycles and 10-year field life |
| Low Incremental Surge Resistance | Minimizes VC overshoot during sub-microsecond transients, critical for protecting fast-switching MOSFET gates |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protects microcontroller GPIOs and CAN transceiver power rails from load-dump and inductive switching transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS clamps reverse transients on 12 V supply rail while allowing normal forward bias operation. Use Value: Limits voltage to ≤234 V during 100 V/50 ms load dump, preventing latch-up or gate oxide damage in downstream logic and drivers. |
Use Scenario: Shields 24 V digital input channels from field-wiring induced surges caused by relay coil de-energization or ESD events. IC Role / Device Role / Timing Role: Fast-response avalanche diode placed between input terminal and ground to shunt transient energy before reaching optocoupler input stage. Use Value: Withstands 400 W pulses without degradation, maintaining >10⁶ surge cycles per IEC 61000-4-5 compliance testing. |
| Telecom Power Supply DC Bus | Sensor Signal Line Protection (e.g., Pressure Sensor) |
Use Scenario: Guards primary-side DC bus (e.g., 170 V intermediate bus) in telecom rectifiers against lightning-induced surges and cross-talk coupling. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across bulk capacitor to clamp overvoltage before it propagates to downstream converters. Use Value: 170 V VWM matches typical 160–180 V nominal bus, avoiding false triggering while delivering 234 V clamping at full rated surge current. |
Use Scenario: Installed on analog output lines (e.g., 4–20 mA loop) of industrial pressure sensors exposed to cable discharge and nearby motor noise. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA) unidirectional suppressor referenced to loop ground, minimizing signal offset error. Use Value: Preserves sensor accuracy with <0.01% full-scale error contribution while suppressing ±1 kV ESD per IEC 61000-4-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ170A-E3/5A | Same VWM (170 V), identical SMA package, but rated for 400 W only up to 150 V; 300 W above 150 V (vs. 400 W for P4SMA170AHE3/61) | Limited peak power at high-voltage nodes; less margin for 170 V bus clamping under repetitive surges | Select P4SMA170AHE3/61 when full 400 W clamping at 170 V is required for IEC 61000-4-5 compliance. |
| 1.5SMC170A | Higher package thermal resistance (RθJA ≈ 150 °C/W vs. 120 °C/W); same VWM/VBR but larger SMC (DO-214AB) footprint | Requires PCB layout change; not suitable for space-constrained SMA layouts | Choose P4SMA170AHE3/61 for compact designs needing AEC-Q101 qualification and superior thermal performance in DO-214AC. |
Compared with SMAJ170A-E3/5A and 1.5SMC170A, the P4SMA170AHE3/61 delivers full 400 W clamping at its rated 170 V standoff, tighter thermal resistance, and automotive qualification - making it optimal for high-reliability 170 V rail protection where board area and surge margin are constrained.
Availability
P4SMA170AHE3/61 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input stages, telecom DC bus protection, and sensor interface circuits requiring stable component supply with AEC-Q101 validation and RoHS compliance.
Supply support for P4SMA170AHE3/61 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, precision, and application-specific optimization.
The P4SMA Series targets cost-sensitive, high-volume transient suppression needs in automotive, industrial, and telecom systems - engineered for automated assembly, AEC-Q101 compliance, and consistent clamping performance across temperature and lifetime.
FAQ
What is the clamping voltage of the P4SMA170AHE3/61 at its rated peak pulse current?
The P4SMA170AHE3/61 has a maximum clamping voltage (VC) of 234 V when subjected to its rated peak pulse current (IPPM) of 234 A under the standard 10/1000 µs waveform. This value is measured at TJ = 25 °C and confirms the device's ability to limit transient overvoltage to a predictable, safe level for downstream components.
Is the P4SMA170AHE3/61 qualified for automotive applications?
Yes, the P4SMA170AHE3/61 is AEC-Q101 qualified, as indicated by the "HE3" suffix. It has undergone stress testing per the AEC-Q101 standard for discrete semiconductors, including temperature cycling, humidity bias, and mechanical shock - validating its suitability for automotive body electronics, powertrain subsystems, and infotainment power rails.
What does the "HE3" suffix signify in P4SMA170AHE3/61?
The "HE3" suffix in P4SMA170AHE3/61 denotes RoHS-compliant construction and AEC-Q101 qualification. It distinguishes this variant from commercial-grade "E3" parts and confirms compliance with automotive reliability standards, halogen-free material content, and JESD201 Class 2 whisker resistance.
Can the P4SMA170AHE3/61 be used in bidirectional configurations?
No, the P4SMA170AHE3/61 is a unidirectional TVS diode, as confirmed by its part number ending in "A" (not "CA"). Bidirectional operation requires the "CA" suffix (e.g., P4SMA170CA). Using P4SMA170AHE3/61 in reverse-biased AC applications would result in forward conduction and failure.
What is the maximum operating junction temperature for the P4SMA170AHE3/61?
The P4SMA170AHE3/61 has a maximum operating junction temperature (TJ max) of +150 °C, enabling reliable operation in under-hood automotive environments and high-temperature industrial enclosures. Derating curves in the datasheet (Fig. 2) define allowable power dissipation versus ambient temperature.
P4SMA170AHE3/61 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:
- 1
- Bidirectional Channels:
- -
- 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)
P4SMA170AHE3/61 FAQ
1.How can I place an order for P4SMA170AHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA170AHE3/61 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 P4SMA170AHE3/61 reliable?
The price and inventory of P4SMA170AHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA170AHE3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA170AHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA170AHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA170AHE3/61?
P4SMA170AHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA170AHE3/61 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 P4SMA170AHE3/61?
For technical support, including P4SMA170AHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA170AHE3/61 requirements.
6.How does Aetrix verify that P4SMA170AHE3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA170AHE3/61 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 P4SMA170AHE3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA170AHE3/61?
All P4SMA170AHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA170AHE3/61, 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 P4SMA170AHE3/61 part is unused and in its original packaging.
Return procedure for P4SMA170AHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA170AHE3/61 Tags
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