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Vishay General Semiconductor - Diodes Division P4SMA170A-E3/61
- Part No.:
- P4SMA170A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA170A-E3/61.pdf
- Description:
- TVS DIODE 145VWM 234VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA170A-E3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for clamping inductive voltage transients on power and signal lines. It features a 170 V standoff voltage (VWM), 194.5 V minimum breakdown voltage (VBR), 234 V maximum clamping voltage (VC) at 1.3 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the P4SMA170A-E3/61 datasheet, P4SMA170A-E3/61 pinout, P4SMA170A-E3/61 application, or P4SMA170A-E3/61 equivalent, key selection criteria include clamping voltage margin vs. protected device VDS/VDD rating, thermal resistance (RθJA = 120 °C/W), unidirectional polarity marking, AEC-Q101 qualification status, and SMA (DO-214AC) package compatibility with automated SMT placement.
Technical Context
This TVS operates as a voltage-clamping protection device triggered by transient overvoltage events exceeding its breakdown threshold. Its glass-passivated junction ensures stable avalanche characteristics and low leakage (<1 µA at 145 V), while the unidirectional configuration provides forward conduction path only during reverse overvoltage surges.
The device complies with IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and ISO 7637-2 (automotive load dump) immunity requirements when applied with appropriate PCB layout - including short trace lengths, low-inductance grounding, and thermal pad coupling per 5.0 mm × 5.0 mm copper area per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 145 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC bias margin below clamping onset. |
| VBR (Breakdown Voltage) | 162–179 V at 1 mA - Verified avalanche initiation range; ensures reliable triggering above system nominal voltage. |
| VC (Clamping Voltage) | 234 V at IPPM = 1.3 A (10/1000 µs) - Peak voltage seen by protected circuit during surge; must stay below downstream component absolute max rating. |
| PPPM (Peak Pulse Power) | 400 W - Energy-handling capacity for standardized 10/1000 µs surge; derates to 300 W above 91 V per spec. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" pads; determines temperature rise under sustained power dissipation. |
| Package | SMA (DO-214AC) - Surface-mount plastic package with matte tin-plated leads; MSL Level 1, compatible with reflow profiles up to 260 °C peak. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with cathode band marking on unidirectional variants. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); terminals are solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; enables normal forward bias operation in series configurations. |
| Cathode | Avalanche clamping terminal | Marked with band; connected to higher-potential side (e.g., VBUS or signal line); conducts reverse surge current to ground. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-4 EFT bursts and automotive load-dump transients without thermal runaway. |
| Glass passivated junction | Ensures stable, repeatable avalanche characteristics over lifetime and temperature; reduces parameter drift vs. epoxy-passivated alternatives. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and compatibility with standard SMT reflow without baking; supports high-volume automated assembly. |
| AEC-Q101 qualified (P4SMA170AHE3 variant) | Validated for automotive under-hood applications; includes stress testing for temperature cycling, HTRB, and mechanical shock. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response time), improving clamping fidelity for sensitive logic inputs. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate drivers and microcontroller I/O pins against inductive kickback from relay coils and solenoid loads. IC Role / Device Role: Unidirectional TVS placed across relay coil or in series with MCU input lines to clamp negative flyback spikes. Use Value: Limits transient voltage to ≤234 V, preventing latch-up or oxide breakdown in 3.3 V/5 V logic interfaces and 200 V-rated MOSFET gates. |
Use Scenario: Safeguarding LIN bus transceivers and sensor supply rails from battery line transients during jump-start or alternator load dump. IC Role / Device Role: Standoff-connected TVS on 12 V rail upstream of LDO regulators and communication ICs. Use Value: Withstands 400 W surges while maintaining <1 µA leakage at 145 V, preserving low-power sleep mode integrity in BCM ECUs. |
| Telecom Power Rectification | Consumer Appliance Control Boards |
|
Use Scenario: Secondary-side surge suppression on AC/DC adapter outputs feeding PoE injectors or base station RF modules. IC Role / Device Role: Parallel-connected TVS on +48 V output rail to absorb lightning-induced surges coupled via Ethernet or power cabling. Use Value: Clamps to 234 V within nanoseconds, protecting 50 V-rated DC-DC controllers and isolators without degrading steady-state efficiency. |
Use Scenario: Input line protection for microcontrollers managing washing machine motor control and water valve actuation. IC Role / Device Role: Unidirectional TVS on 24 V auxiliary supply feeding MCU and driver ICs, referenced to chassis ground. Use Value: Survives repeated 1.3 A surge events per IEC 61000-4-4; RoHS-compliant E3 suffix meets global environmental compliance mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170A | Same VWM (145 V) and VC (234 V), but SMB package (DO-214AA); RθJA = 85 °C/W vs. 120 °C/W. | Higher power density handling due to lower thermal resistance; requires larger PCB pad area than SMA. | Select SMBJ170A when board space allows larger footprint and thermal performance is prioritized over minimal height. |
| 1.5SMC170A | Same electrical specs but SMC (DO-214AB) package; 1.5 kW peak power rating (vs. 400 W), larger body size. | Designed for higher-energy transients (e.g., ISO 16750-2 long-duration surges); not drop-in due to 7.1 mm × 6.2 mm footprint. | Choose 1.5SMC170A only when surge energy exceeds P4SMA170A-E3/61 capability and layout permits larger package. |
Compared with SMBJ170A and 1.5SMC170A, P4SMA170A-E3/61 offers optimal balance of low-profile mounting (2.29 mm height), automated assembly compatibility, and sufficient 400 W surge rating for most industrial and consumer-level transients - making it preferred where board height and SMT throughput are critical constraints.
Availability
P4SMA170A-E3/61 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power rectification, and consumer appliance control boards requiring stable component supply and RoHS-compliant sourcing.
Supply support for P4SMA170A-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, TVS devices, and optoelectronics with emphasis on reliability, ruggedness, and application-specific validation.
The P4SMA Series was developed for cost-effective, high-volume transient protection in space-constrained SMT designs - targeting automotive, industrial, and telecom systems where consistent clamping performance and AEC-Q101 qualification matter.
FAQ
What is the maximum clamping voltage of P4SMA170A-E3/61 under standard test conditions?
The maximum clamping voltage (VC) of P4SMA170A-E3/61 is 234 V when subjected to a 10/1000 µs waveform at a peak pulse current (IPPM) of 1.3 A. This value is measured per JEDEC standards and represents the highest voltage the device allows to pass through during a defined transient event - critical for ensuring protected components remain within their absolute maximum voltage ratings. The P4SMA170A-E3/61 maintains this clamping performance across its specified operating temperature range.
Is P4SMA170A-E3/61 suitable for automotive applications?
P4SMA170A-E3/61 itself is RoHS-compliant and commercial-grade; however, the AEC-Q101 qualified version is designated as P4SMA170AHE3_A. That variant undergoes extended stress testing including temperature cycling, high-temperature reverse bias, and mechanical shock - validating suitability for automotive under-hood and body electronics. For non-automotive use, P4SMA170A-E3/61 remains fully functional but lacks formal automotive qualification documentation.
What does the "-E3/61" suffix indicate in P4SMA170A-E3/61?
The "-E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 solderability requirements. The "/61" indicates packaging in 7-inch diameter plastic tape and reel, with a standard quantity of 1800 units per reel. This format supports automated pick-and-place assembly and is compatible with industry-standard SMT equipment feeders.
How does the thermal resistance of P4SMA170A-E3/61 affect its surge handling capability?
P4SMA170A-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" copper pads. This value directly impacts how quickly heat dissipates after a surge event: higher RθJA limits repetitive surge duty cycle and may require derating above 25 °C ambient. For example, at 70 °C ambient, its 400 W peak rating drops to ~280 W - meaning P4SMA170A-E3/61 must be applied with attention to PCB copper area and airflow in thermally demanding environments.
Can P4SMA170A-E3/61 be used in bidirectional configurations?
No - P4SMA170A-E3/61 is a unidirectional TVS diode, identifiable by its cathode band marking. Bidirectional operation requires the CA-suffixed variant (e.g., P4SMA170CA). Using P4SMA170A-E3/61 in a bidirectional signal path would result in forward conduction during half-cycles, causing malfunction or damage. Always match polarity: cathode to higher potential for clamping, anode to lower potential or ground reference.
P4SMA170A-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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA170A-E3/61 FAQ
1.How can I place an order for P4SMA170A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA170A-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 P4SMA170A-E3/61 reliable?
The price and inventory of P4SMA170A-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 P4SMA170A-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA170A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA170A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA170A-E3/61?
P4SMA170A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA170A-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 P4SMA170A-E3/61?
For technical support, including P4SMA170A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA170A-E3/61 requirements.
6.How does Aetrix verify that P4SMA170A-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA170A-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 P4SMA170A-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA170A-E3/61?
All P4SMA170A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA170A-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 P4SMA170A-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA170A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA170A-E3/61 Tags
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