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Vishay General Semiconductor - Diodes Division P4SMA180CAHE3_A/H
- Part No.:
- P4SMA180CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA180CAHE3_A/H.pdf
- Description:
- TVS DIODE 154VWM 246VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,054
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Product details
Overview
P4SMA180CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in the P4SMA series, designed for clamping voltage transients on signal and power lines. It features a 180 V standoff voltage (VWM), 207 V minimum breakdown voltage (VBR), 400 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive applications.
For engineers reviewing the P4SMA180CAHE3_A/H datasheet, P4SMA180CAHE3_A/H pinout, P4SMA180CAHE3_A/H application, or P4SMA180CAHE3_A/H equivalent, this device is selected for robust ESD and surge protection in automotive sensor interfaces, industrial I/O lines, and telecom power rails where bidirectional clamping and high-reliability qualification are required.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with clamping voltage of 246 V at 1.2 A peak pulse current (IPPM), enabling effective suppression of ±180 V transients without polarity constraints. Its glass-passivated junction ensures stable leakage performance (<1.0 µA at VWM) and fast response time under nanosecond-scale surges.
The device uses a DO-214AC (SMA) package with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102, rated for MSL Level 1 (260 °C peak reflow), and achieves thermal resistance of 120 °C/W (junction-to-ambient) on standard 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff Voltage) | 180 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin for 12–48 V systems. |
| VBR (Breakdown Voltage) | 207 V min - Voltage at which device enters avalanche conduction at 1 mA test current; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 246 V max at IPPM = 1.2 A - Peak voltage seen by protected circuit during 10/1000 µs surge; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 400 W - Sustained transient energy absorption capability per 10/1000 µs waveform; supports IEC 61000-4-5 Level 3/4 surge immunity. |
| ID (Reverse Leakage) | ≤1.0 µA at VWM - Minimal standby current draw; critical for low-power sensor nodes and battery-backed circuits. |
| TJ max | +150 °C - Maximum junction temperature rating; enables operation in under-hood automotive environments and industrial enclosures. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing; suitable for ASIL-B system interfaces. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); cathode/anode terminals are symmetrical and non-polarized.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Accepts negative-going surges; forms one side of symmetrical clamping path. |
| Cathode | Transient current entry (positive polarity) | Accepts positive-going surges; completes bidirectional clamping loop with Anode. |
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 (10/1000 µs) | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive power/signal interfaces. |
| AEC-Q101 qualification | Validated for automotive electronics including engine control modules, ADAS sensors, and body controllers. |
| MSL Level 1 moisture sensitivity | Allows direct placement into reflow assembly without baking; reduces manufacturing overhead. |
| Glass passivated junction | Ensures long-term stability of leakage current and breakdown voltage across temperature and lifetime. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface to limit transient excursions before reaching sensitive ICs. Use Value: Prevents latch-up or permanent damage in AEC-Q100 qualified microcontrollers and signal conditioners during vehicle cranking or alternator regulation faults. |
Use Scenario: Shielding digital input/output channels of programmable logic controllers against induced surges from relay switching and motor drives. IC Role / Device Role / Timing Role: Fast-response shunt protector located adjacent to terminal block to divert >1 kV transients within <1 ns. Use Value: Maintains functional safety integrity (IEC 61508 SIL2) by limiting fault voltage to <250 V during 2 kV/1 kA surge tests. |
| Telecom Power Rail Protection | Consumer Device USB/UART Lines |
Use Scenario: Safeguarding 48 V DC power feeds in PoE-powered network equipment and base station backhaul units. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC distribution, coordinated with upstream fuses and MOVs. Use Value: Absorbs up to 400 W of surge energy while holding rail voltage below 250 V, preventing brownout or reset of Ethernet PHYs and PMICs. |
Use Scenario: ESD and lightning-induced transient suppression on USB 2.0 data lines and UART debug ports in smart home hubs and wearables. IC Role / Device Role / Timing Role: Low-capacitance (≈30 pF) bidirectional TVS placed inline with differential pairs to preserve signal integrity. Use Value: Passes IEC 61000-4-2 Level 4 (±15 kV contact) without signal degradation or latch-up in host microcontrollers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180CA | Same VWM (180 V), higher PPPM (600 W), larger SMB (DO-214AA) package (4.58 mm × 3.94 mm). | Better suited for higher-energy surges but requires larger PCB footprint and different pad layout. | Select when surge energy exceeds 400 W or when thermal dissipation demands lower RθJA (85 °C/W typical). |
| 1.5KE180CA | Same VWM (180 V), higher PPPM (1500 W), axial-leaded DO-201AD package; not surface-mount. | Requires through-hole assembly and manual soldering; incompatible with automated SMT lines. | Choose only for legacy through-hole designs or prototyping where board space is unconstrained and reflow compatibility is not required. |
Compared with P4SMA180CAHE3_A/H, SMBJ180CA offers greater surge handling in a slightly larger SMT package, while 1.5KE180CA provides higher power in a non-SMT form factor-neither is pin-compatible, and both require layout revision and thermal reassessment.
Availability
P4SMA180CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom power rail protection requiring stable component supply, AEC-Q101 compliance, and consistent DO-214AC packaging.
Supply support for P4SMA180CAHE3_A/H 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and automotive-grade validation.
The P4SMA series is engineered for high-volume surface-mount transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where compact size, AEC-Q101 qualification, and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of P4SMA180CAHE3_A/H at its rated peak pulse current?
The P4SMA180CAHE3_A/H has a maximum clamping voltage (VC) of 246 V at 1.2 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88367 and defines the upper voltage limit imposed on protected circuitry during surge events. The clamping performance remains stable across temperature due to the device's low temperature coefficient of VBR (0.108 %/°C).
Is P4SMA180CAHE3_A/H suitable for automotive applications?
Yes, P4SMA180CAHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix and "_A/H" revision code. It meets stress test requirements including temperature cycling, highly accelerated life testing (HALT), and ESD robustness per AEC-Q101 Rev G. The device is deployed in engine control units, ADAS camera modules, and body electronics where bidirectional surge immunity and under-hood temperature resilience (+150 °C TJ max) are essential.
How does the bidirectional design of P4SMA180CAHE3_A/H affect its circuit placement?
The bidirectional design of P4SMA180CAHE3_A/H eliminates polarity constraints, allowing it to be placed across any two points needing symmetrical overvoltage protection-such as differential signal pairs (RS-485, CAN), AC-coupled lines, or floating power rails. Unlike unidirectional TVS diodes, P4SMA180CAHE3_A/H requires no orientation verification during placement, reducing assembly errors and supporting automated optical inspection (AOI) without polarity checks.
What is the thermal resistance of P4SMA180CAHE3_A/H, and how does it impact PCB layout?
P4SMA180CAHE3_A/H 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 assumes minimal copper area; increasing pad size or adding thermal vias lowers RθJA and improves surge endurance. For sustained 3.3 W power dissipation, designers must ensure adequate copper area and airflow to maintain junction temperature below +150 °C.
Does P4SMA180CAHE3_A/H meet RoHS and halogen-free requirements?
Yes, P4SMA180CAHE3_A/H is RoHS-compliant and AEC-Q101 qualified, with the "HE3" suffix indicating compliance per Vishay's material categorization standard (document 99912). It contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE, and meets JEDEC JS709C halogen-free criteria (<900 ppm Cl, <900 ppm Br, <1500 ppm total halogens). The matte tin plating also satisfies J-STD-002 solderability standards.
P4SMA180CAHE3_A/H 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):
- 154V
- Voltage - Breakdown (Min):
- 171V
- Voltage - Clamping (Max) @ Ipp:
- 246V
- Current - Peak Pulse (10/1000µs):
- 1.2A
- Power - Peak Pulse:
- 400W
- 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)
P4SMA180CAHE3_A/H FAQ
1.How can I place an order for P4SMA180CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA180CAHE3_A/H 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 P4SMA180CAHE3_A/H reliable?
The price and inventory of P4SMA180CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA180CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA180CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA180CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA180CAHE3_A/H?
P4SMA180CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA180CAHE3_A/H 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 P4SMA180CAHE3_A/H?
For technical support, including P4SMA180CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA180CAHE3_A/H requirements.
6.How does Aetrix verify that P4SMA180CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA180CAHE3_A/H 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 P4SMA180CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA180CAHE3_A/H?
All P4SMA180CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA180CAHE3_A/H, 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 P4SMA180CAHE3_A/H part is unused and in its original packaging.
Return procedure for P4SMA180CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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