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Vishay General Semiconductor - Diodes Division P4SMA180AHM3/H
- Part No.:
- P4SMA180AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA180AHM3/H.pdf
- Description:
- TVS DIODE 154VWM 246VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA180AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 180 V standoff voltage (VWM), 246 V clamping voltage (VC) at 1.2 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 µs waveform). It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power supply rails against inductive switching transients.
For engineers reviewing the P4SMA180AHM3/H datasheet, P4SMA180AHM3/H pinout, P4SMA180AHM3/H application, or P4SMA180AHM3/H equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS-compliant construction (HM3 suffix), 150 °C max junction temperature, and low incremental surge resistance enabling robust clamping under repetitive surge conditions.
Technical Context
The P4SMA180AHM3/H operates as a unidirectional avalanche diode with glass-passivated junction, delivering fast response time (<1 ns) and stable breakdown behavior across -65 °C to +150 °C. Its 180 V stand-off voltage ensures compatibility with 150 V DC bus systems while maintaining low leakage (≤1.0 µA at VWM).
Designed for surface-mount assembly on 0.2" × 0.2" copper pads, it achieves 400 W peak pulse power dissipation per 10/1000 µs waveform (derated to 300 W above 91 V), with thermal resistance RθJA = 120 °C/W and RθJL = 30 °C/W - critical for thermal management in compact power electronics layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 180 V - maximum continuous reverse working voltage before clamping initiates; defines operating margin for 150 V nominal DC rails. |
| VBR (Breakdown Voltage) | 171–189 V at 1 mA test current - tight 5% tolerance ensures predictable turn-on threshold across production lots. |
| VC (Clamping Voltage) | 246 V at IPPM = 1.2 A - limits transient voltage seen by downstream circuitry during 10/1000 µs surge events. |
| PPPM (Peak Pulse Power) | 400 W (10/1000 µs) - sustains high-energy transients without failure; derates to 300 W above 91 V per spec. |
| ID (Reverse Leakage) | ≤1.0 µA at VWM - negligible standby current preserves efficiency in always-on protection circuits. |
| TJ max. | +150 °C - supports operation in under-hood automotive environments and enclosed industrial enclosures. |
| AEC-Q101 Qualified | Yes (HM3 suffix) - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD. |
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 indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to system ground or low-side reference; enables unidirectional clamping from line-to-ground. |
| Cathode | Current exit terminal during reverse breakdown | Connected to protected line (e.g., 150 V rail); absorbs transient energy into ground path when voltage exceeds VWM. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Handles high-energy surges common in automotive load-dump and industrial motor drive switching without degradation. |
| AEC-Q101 qualified (HM3 suffix) | Meets automotive stress-test requirements for temperature cycling, highly accelerated life testing, and ESD robustness. |
| Halogen-free, RoHS-compliant | Complies with environmental regulations and eliminates corrosive halogen emissions during reflow or end-of-life processing. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients, improving protection margin for sensitive gate drivers and controllers. |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements. |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive I/O Protection |
|---|---|
Use Scenario: Protecting 150 V DC bus lines in engine control units (ECUs) and body control modules against ISO 7637-2 load-dump transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp voltage spikes exceeding 180 V. Use Value: Prevents latch-up or permanent damage to MCU power supplies and CAN transceivers during battery disconnection events. |
Use Scenario: Shielding analog input channels of PLC analog I/O modules from inductive kickback generated by solenoid valve switching. IC Role / Device Role / Timing Role: Line-to-ground TVS on 24 V sensor supply lines, activated within nanoseconds of overvoltage onset. Use Value: Maintains signal integrity and prevents ADC saturation or microcontroller reset during field wiring faults. |
| Telecom DC Power Input Protection | Consumer Appliance Power Supply Clamping |
Use Scenario: Safeguarding primary-side rectifier outputs in telecom AC/DC adapters subjected to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Secondary-stage TVS on bulk capacitor output, clamping transients before they reach PWM controller ICs. Use Value: Enables compliance with EN 61000-4-5 Level 3 (2 kV line-earth) without requiring additional MOV stages. |
Use Scenario: Protecting SMPS feedback optocoupler inputs in washing machine mainboards from transformer-coupled noise. IC Role / Device Role / Timing Role: Low-capacitance TVS on isolated feedback path, limiting voltage excursions to <250 V during EFT bursts. Use Value: Eliminates false triggering of overvoltage protection circuits and improves long-term reliability in humid environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ180A | Same VWM (180 V), same SMA package, but rated for 400 W with 1.0 ms pulse width; no AEC-Q101 qualification. | Not suitable for automotive production; acceptable for industrial/commercial designs where qualification is not mandated. | Select SMAJ180A only if AEC-Q101 is unnecessary and cost is prioritized over automotive traceability. |
| 1.5SMC180A | Higher power rating (1500 W), larger SMC (DO-214AB) package, 274 V clamping at 5.5 A; no AEC-Q101 or halogen-free certification. | Requires PCB layout change due to larger footprint; used where higher surge immunity is needed beyond 400 W. | Choose 1.5SMC180A only when surge threat level exceeds P4SMA180AHM3/H capability and board space permits SMC package. |
Compared with SMAJ180A and 1.5SMC180A, the P4SMA180AHM3/H uniquely combines AEC-Q101 qualification, halogen-free compliance, and SMA footprint - making it the only drop-in solution for automotive Tier-1 suppliers requiring full documentation traceability and material declarations without sacrificing board area.
Availability
P4SMA180AHM3/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC analog I/O modules, telecom DC power inputs, and consumer appliance SMPS designs requiring stable component supply with full AEC-Q101 and RoHS documentation.
Supply support for P4SMA180AHM3/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, and protection devices 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 markets - engineered for automated placement, thermal robustness, and consistent clamping performance across temperature and lifetime.
FAQ
What is the clamping voltage of the P4SMA180AHM3/H at its rated peak pulse current?
The P4SMA180AHM3/H has a maximum clamping voltage (VC) of 246 V at 1.2 A peak pulse current (IPPM), measured under the standard 10/1000 µs waveform. This value ensures protected circuits experience less than 246 V during surge events, preserving margin for 150 V-rated components downstream. The P4SMA180AHM3/H maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C).
Is the P4SMA180AHM3/H qualified for automotive applications?
Yes, the P4SMA180AHM3/H is AEC-Q101 qualified, as confirmed by the HM3 suffix and Vishay's official documentation. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD per JESD22-A114. The P4SMA180AHM3/H is approved for use in engine control units, body electronics, and ADAS power domains where automotive-grade reliability is mandatory.
What does the "HM3" suffix indicate in P4SMA180AHM3/H?
The "HM3" suffix in P4SMA180AHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade E3/M3 versions and confirms compliance with automotive material standards (e.g., JESD201 Class 2 whisker resistance). The "H" indicates 7-inch tape-and-reel packaging (1800 pcs/reel), and the "/H" ending reinforces that packaging configuration. The P4SMA180AHM3/H meets all requirements for Tier-1 automotive BOMs.
How does the P4SMA180AHM3/H compare to bidirectional TVS diodes like P4SMA180CA?
The P4SMA180AHM3/H is unidirectional, meaning it conducts only in reverse breakdown and blocks forward current - ideal for line-to-ground protection on positive rails. In contrast, P4SMA180CA is bidirectional with symmetric clamping in both polarities, suited for AC lines or differential signal protection. The P4SMA180AHM3/H offers lower leakage and tighter VBR tolerance than its bidirectional counterpart, but cannot protect against negative-going transients without additional circuitry.
What is the maximum junction temperature rating for the P4SMA180AHM3/H?
The P4SMA180AHM3/H has a maximum junction temperature (TJ max.) of +150 °C, verified per Vishay's thermal characterization data. This allows reliable operation in under-hood automotive environments and sealed industrial enclosures. Derating curves in the datasheet show usable power dissipation down to +125 °C ambient when mounted on recommended 0.2" × 0.2" copper pads. The P4SMA180AHM3/H retains full electrical specifications up to this limit.
P4SMA180AHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA180AHM3/H FAQ
1.How can I place an order for P4SMA180AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA180AHM3/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 P4SMA180AHM3/H reliable?
The price and inventory of P4SMA180AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA180AHM3/H is usually 5 days.
3.What payment methods are accepted for P4SMA180AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA180AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA180AHM3/H?
P4SMA180AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA180AHM3/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 P4SMA180AHM3/H?
For technical support, including P4SMA180AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA180AHM3/H requirements.
6.How does Aetrix verify that P4SMA180AHM3/H is sourced from the original manufacturer or authorized distributors?
All P4SMA180AHM3/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 P4SMA180AHM3/H meets industry standards.
7.What is the process for return or replacement of P4SMA180AHM3/H?
All P4SMA180AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA180AHM3/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 P4SMA180AHM3/H part is unused and in its original packaging.
Return procedure for P4SMA180AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA180AHM3/H Tags
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