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Vishay General Semiconductor - Diodes Division P4SMA150AHM3_A/H
- Part No.:
- P4SMA150AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA150AHM3_A/H.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,035
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Product details
Overview
P4SMA150AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 150 V standoff voltage (VWM), 143–158 V breakdown voltage (VBR) at 1 mA, and 400 W peak pulse power (10/1000 μs). It delivers 1.4 A peak pulse current (IPPM) with 207 V clamping voltage (VC), and is AEC-Q101 qualified for automotive electronics protection against inductive switching transients.
For engineers reviewing the P4SMA150AHM3_A/H datasheet, P4SMA150AHM3_A/H pinout, P4SMA150AHM3_A/H application, or P4SMA150AHM3_A/H equivalent, this device serves as a robust, low-profile, RoHS-compliant, halogen-free TVS for high-reliability DC power line and signal line surge suppression in automotive ECUs, industrial sensors, and telecom interfaces.
Technical Context
The P4SMA150AHM3_A/H operates as a unidirectional clamping device with cathode-banded polarity, leveraging glass-passivated junction technology for stable avalanche behavior. Its thermal resistance is 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead), enabling reliable operation up to 150 °C junction temperature.
It meets J-STD-020 MSL Level 1 (peak reflow 260 °C), supports automated SMT placement, and exhibits <100 nA reverse leakage at 128 V (ID ≤ 1.0 μA at VWM = 128 V), with a 0.108 %/°C temperature coefficient of VBR - critical for precision overtemperature stability in automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 128 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC operating margin. |
| VBR (Breakdown Voltage) | 143–158 V at IT = 1 mA - precise avalanche onset range ensuring predictable clamping threshold under transient stress. |
| VC (Clamping Voltage) | 207 V at IPPM = 1.4 A (10/1000 μs) - peak voltage seen by protected circuit during worst-case surge; determines IC survivability. |
| PPPM (Peak Pulse Power) | 400 W - energy-handling capability for standardized 10/1000 μs transients; derates above 25 °C per Fig. 2. |
| ID (Reverse Leakage) | ≤1.0 μA at VWM = 128 V - ultra-low leakage preserves signal integrity and minimizes standby power loss. |
| TJ max. | 150 °C - enables use in under-hood automotive modules and high-ambient industrial enclosures without derating. |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per AEC standard. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band on body; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal (forward bias) | Connected to lower-potential side of protected line; forms forward path during positive surges in unidirectional configuration. |
| Cathode | Current exit terminal (reverse bias clamping) | Banded end; connected to higher-potential side (e.g., VBUS); conducts avalanche current during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 surge immunity testing on 12 V/24 V automotive power rails. |
| AEC-Q101 qualification (HM3 suffix) | Validated for automotive applications including engine control, ADAS sensors, and body electronics. |
| Glass-passivated junction | Ensures long-term parameter stability and low leakage drift across 1000+ thermal cycles. |
| MSL Level 1 (260 °C peak) | Enables single-pass lead-free reflow without popcorn cracking or delamination risk. |
| Halogen-free & RoHS-compliant | Fulfills EU ELV Directive and IPC-1752A material declaration requirements for Tier 1 automotive supply chains. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed microcontroller inputs and CAN transceivers in engine control units from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBUS and GND to clamp surges >128 V while remaining inert during normal operation. Use Value: Limits clamped voltage to 207 V, well below 250 V absolute maximum ratings of common automotive MCUs and transceivers. |
Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA, 0–5 V) of pressure/temperature sensors in factory automation against ESD and cable-induced surges. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF at 0 V) unidirectional suppressor mounted directly at connector interface. Use Value: Sub-μA leakage preserves sensor accuracy; fast response (<1 ns) prevents latch-up in downstream op-amps and ADCs. |
| Telecom DC Power Input Protection | Consumer Device USB Port Surge Suppression |
Use Scenario: Shielding PoE-powered switches and base station RF modules from lightning-induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary clamping device upstream of DC-DC converters, sized for 400 W pulse handling per IEEE C62.41.2. Use Value: 207 V clamping ensures downstream 50 V-rated MOSFETs and controllers remain within SOA during 1 kV/2 kA surge events. |
Use Scenario: Adding secondary-level surge protection to USB Type-C VBUS lines in portable medical monitors and smart home hubs. IC Role / Device Role / Timing Role: Unidirectional TVS placed after primary fuse and before USB PD controller to absorb residual transients. Use Value: SMA footprint allows compact layout near connector; AEC-Q101 qualification assures field reliability beyond consumer-grade alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150A-E3/5A | Same VWM (128 V), VC = 243 V at 1.2 A; 400 W rating but higher clamping voltage (+36 V). | Less effective clamping margin for 3.3 V/5 V logic; suitable where board space permits larger SMAJ package. | Select when legacy design uses SMAJ footprint and higher VC is acceptable for downstream voltage tolerance. |
| 1.5SMC150AHE3_A | Same VWM/VBR/VC specs, but SMC (DO-214AB) package - 2.5 mm wider, 0.3 mm taller than SMA. | Higher thermal mass improves power dissipation margin but requires PCB layout change. | Choose for designs needing enhanced 3.3 W steady-state power handling or existing SMC land patterns. |
Compared with P4SMA150AHM3_A/H, SMAJ150A-E3/5A offers identical voltage ratings but sacrifices clamping performance, while 1.5SMC150AHE3_A trades compactness for improved thermal robustness - making P4SMA150AHM3_A/H optimal for space-constrained, AEC-Q101–mandated automotive modules.
Availability
P4SMA150AHM3_A/H is available at Aetrix Electronics and suitable for automotive ECU power rail protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA150AHM3_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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and automotive-grade qualification.
The P4SMA Series was engineered specifically for high-volume, space-sensitive transient suppression in automotive, industrial, and telecom systems - combining AEC-Q101 compliance, halogen-free construction, and optimized SMA packaging for automated manufacturing.
FAQ
What is the clamping voltage of the P4SMA150AHM3_A/H under a 10/1000 µs surge?
The P4SMA150AHM3_A/H has a maximum clamping voltage (VC) of 207 V at 1.4 A peak pulse current (IPPM) using the standardized 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet (Doc. #88367) and reflects the actual voltage imposed on protected circuitry during worst-case transient events - critical for verifying compatibility with downstream IC voltage tolerances.
Is the P4SMA150AHM3_A/H suitable for automotive applications?
Yes, the P4SMA150AHM3_A/H is AEC-Q101 qualified (denoted by the HM3 suffix), meaning it has passed rigorous stress tests including temperature cycling, high-temperature reverse bias, and ESD per automotive reliability standards. Its 150 °C maximum junction temperature, MSL Level 1 reflow rating, and halogen-free construction make it appropriate for under-hood and cabin ECU applications.
What does the "_A/H" suffix mean in P4SMA150AHM3_A/H?
In P4SMA150AHM3_A/H, "A" indicates the device belongs to the AEC-Q101 qualified variant group covering 6.8 V to 220 V standoff voltages, and "H" specifies the packaging format: 7-inch diameter plastic tape and reel with 1800 units per reel. The "HM3" portion confirms halogen-free, RoHS-compliant, and AEC-Q101–qualified construction.
How does the P4SMA150AHM3_A/H compare to bidirectional TVS diodes?
The P4SMA150AHM3_A/H is unidirectional and features a cathode band for polarity identification; it conducts only during reverse overvoltage events and blocks forward current like a rectifier. Unlike bidirectional variants (e.g., P4SMA150CA), it cannot protect AC-coupled or differential signal lines - but offers lower capacitance and tighter VBR tolerance for DC power rail applications.
What is the thermal resistance of the P4SMA150AHM3_A/H?
The P4SMA150AHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead resistance (RθJL) of 30 °C/W, measured on 0.2" × 0.2" copper pads per JEDEC standards. These values inform thermal design margins when estimating steady-state power dissipation (PD = 3.3 W) and transient junction temperature rise during surge events.
P4SMA150AHM3_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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 1.4A
- 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)
P4SMA150AHM3_A/H FAQ
1.How can I place an order for P4SMA150AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA150AHM3_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 P4SMA150AHM3_A/H reliable?
The price and inventory of P4SMA150AHM3_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 P4SMA150AHM3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA150AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA150AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA150AHM3_A/H?
P4SMA150AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA150AHM3_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 P4SMA150AHM3_A/H?
For technical support, including P4SMA150AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA150AHM3_A/H requirements.
6.How does Aetrix verify that P4SMA150AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA150AHM3_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 P4SMA150AHM3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA150AHM3_A/H?
All P4SMA150AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA150AHM3_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 P4SMA150AHM3_A/H part is unused and in its original packaging.
Return procedure for P4SMA150AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA150AHM3_A/H Tags
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