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Vishay General Semiconductor - Diodes Division P4SMA170AHE3_A/I
- Part No.:
- P4SMA170AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA170AHE3_A/I.pdf
- Description:
- TVS DIODE 145VWM 234VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA170AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 170 V standoff voltage (VWM), 162–179 V breakdown voltage (VBR) at 1 mA, and 234 V clamping voltage (VC) at 1.3 A peak pulse current (IPPM), designed to protect power rails and signal lines in automotive and industrial electronics against ESD and inductive switching transients.
For engineers reviewing the P4SMA170AHE3_A/I datasheet, P4SMA170AHE3_A/I pinout, P4SMA170AHE3_A/I application, or P4SMA170AHE3_A/I equivalent, this AEC-Q101 qualified TVS offers verified 400 W peak pulse power (10/1000 μs), low thermal resistance (RθJL = 30 °C/W), and RoHS-compliant matte tin-plated leads - critical for high-reliability board-level surge protection design.
Technical Context
The P4SMA170AHE3_A/I operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable avalanche behavior and fast response time (<1 ns). Its 170 V VWM enables use on 150 V DC bus lines while maintaining margin against normal operating overvoltage.
Thermal performance is defined by RθJA = 120 °C/W (on standard 0.2" × 0.2" copper pads) and RθJL = 30 °C/W, supporting sustained 3.3 W power dissipation at TA = 50 °C. It meets J-STD-020 MSL Level 1 and withstands 40 A IFSM (8.3 ms half-sine) without degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 145 V - Maximum continuous reverse voltage before clamping begins; sets operating margin for 150 V systems. |
| VBR (Breakdown Voltage) | 162–179 V at IT = 1 mA - Confirmed avalanche onset range; ensures predictable turn-on under transient stress. |
| VC (Clamping Voltage) | 234 V at IPPM = 1.3 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge. |
| PPPM (Peak Pulse Power) | 400 W - Sustains 10/1000 μs surges per IEC 61000-4-5; derates to 300 W above 91 V per spec. |
| ID (Reverse Leakage) | 1.0 μA at VWM - Negligible standby current; avoids loading sensitive 150 V bias networks. |
| TJ max | 150 °C - Enables operation in under-hood automotive environments and sealed industrial enclosures. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness. |
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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to system ground or low-side reference | Provides low-impedance path to ground during transient clamping; must be routed with minimal inductance. |
| Cathode | Current exit terminal in forward bias; connected to protected line (e.g., 150 V rail) | Defines clamping polarity; band-marked end ensures correct orientation on PCB for unidirectional suppression. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Enables compliance with IEC 61000-4-5 Level 4 surge immunity on 150 V DC inputs without external series impedance. |
| Glass-passivated junction | Ensures stable VBR over lifetime and temperature; eliminates parameter drift due to moisture or contamination. |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow assembly without popcorn cracking or delamination risk. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring extended temperature and life testing. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a), improving protection margin. |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 150 V battery-fed ECUs from load dump and alternator ripple transients in 48 V mild-hybrid vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 150 V rail and chassis ground to clamp surges exceeding 170 V. Use Value: Limits transient voltage to ≤234 V, preventing damage to downstream DC-DC controllers and CAN transceivers. |
Use Scenario: Safeguarding analog output lines of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: TVS mounted at connector interface to suppress ESD (IEC 61000-4-2 ±8 kV contact) and inductive kickback. Use Value: Sub-1 ns response ensures clamping occurs before sensor amplifier input stages are overstressed. |
| Telecom DC Feeder Protection | Renewable Energy Inverter DC Link |
Use Scenario: Shielding remote radio unit (RRU) power feeds from lightning-induced surges on outdoor telecom towers. IC Role / Device Role / Timing Role: Primary clamping device on -48 V or +150 V DC feeder lines upstream of DC-DC conversion. Use Value: 400 W rating handles multi-kA induced surges; AEC-Q101 grade ensures long-term field reliability. |
Use Scenario: Protecting IGBT gate drivers and auxiliary supplies in solar string inverters exposed to grid-switching transients. IC Role / Device Role / Timing Role: Secondary protection on 150 V auxiliary supply rail feeding isolated gate drivers. Use Value: 150 °C TJ max allows placement near heat-generating power stages without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170A-E3/52 | Same VWM/VBR/VC specs but SMB (DO-214AA) package; 50 % larger footprint, higher RθJA (150 °C/W) | Preferred where board space permits and lower thermal demand exists; not suitable for ultra-dense layouts | Select when thermal margin is abundant and legacy SMB layout reuse is required. |
| 1.5KE170A | Through-hole TO-204AE (DO-201AE); 1500 W PPPM but 3× larger size and no AEC-Q101 qualification | Used in non-automotive industrial equipment where manual assembly and higher surge margin outweigh size constraints | Choose only for cost-sensitive, non-automotive designs needing >400 W surge handling and no surface-mount requirement. |
Compared with SMBJ170A-E3/52 and 1.5KE170A, the P4SMA170AHE3_A/I delivers identical electrical protection in a smaller, AEC-Q101-qualified surface-mount package - enabling compact, automotive-grade designs without sacrificing clamping performance or thermal robustness.
Availability
P4SMA170AHE3_A/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom DC feeders, and renewable energy inverters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4SMA170AHE3_A/I 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 high-power handling.
The P4SMA Series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for robust, standardized transient suppression in automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of the P4SMA170AHE3_A/I under a 10/1000 μs surge?
The P4SMA170AHE3_A/I has a maximum clamping voltage (VC) of 234 V at 1.3 A peak pulse current (IPPM) using the standard 10/1000 μs waveform. This value is measured with the device mounted on 0.2" × 0.2" copper pads per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during surge events. The P4SMA170AHE3_A/I maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C).
Is the P4SMA170AHE3_A/I qualified for automotive applications?
Yes, the P4SMA170AHE3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and revision notes specifying AEC-Q101 availability for P4SMA6.8A to P4SMA220A variants. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 requirements. The P4SMA170AHE3_A/I is approved for use in automotive powertrain, body electronics, and ADAS subsystems.
What does the "_A/I" suffix mean in P4SMA170AHE3_A/I?
The "_A/I" suffix in P4SMA170AHE3_A/I indicates two attributes: "A" denotes the AEC-Q101 qualification grade for the 6.8 V to 220 V voltage range, and "I" specifies packaging in 13-inch diameter plastic tape and reel with 7500 units per reel. This format aligns with Vishay's ordering nomenclature in Document 88367, where "I" corresponds to high-volume surface-mount assembly logistics.
Can the P4SMA170AHE3_A/I be used in bidirectional configurations?
No, the P4SMA170AHE3_A/I is a unidirectional TVS diode, as indicated by the "A" (not "CA") in its part number and its cathode-band polarity marking. Bidirectional operation requires the "CA" suffix (e.g., P4SMA170CA). Using the P4SMA170AHE3_A/I in reverse-biased configurations will result in forward conduction rather than symmetrical clamping, compromising protection integrity on AC or dual-polarity lines.
What is the thermal resistance from junction to lead (RθJL) for the P4SMA170AHE3_A/I?
The P4SMA170AHE3_A/I has a typical thermal resistance from junction to lead (RθJL) of 30 °C/W, per Vishay's Thermal Characteristics table. This low value enables efficient heat transfer from the silicon die to the PCB copper via the leads, supporting reliable 3.3 W continuous power dissipation at TA = 50 °C. The RθJL value is independent of pad layout and critical for estimating local junction temperature rise under steady-state bias conditions.
P4SMA170AHE3_A/I 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:
- -
- 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_A/I FAQ
1.How can I place an order for P4SMA170AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA170AHE3_A/I 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_A/I reliable?
The price and inventory of P4SMA170AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA170AHE3_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA170AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA170AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA170AHE3_A/I?
P4SMA170AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA170AHE3_A/I 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_A/I?
For technical support, including P4SMA170AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA170AHE3_A/I requirements.
6.How does Aetrix verify that P4SMA170AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA170AHE3_A/I 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_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA170AHE3_A/I?
All P4SMA170AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA170AHE3_A/I, 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_A/I part is unused and in its original packaging.
Return procedure for P4SMA170AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA170AHE3_A/I Tags
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