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Vishay General Semiconductor - Diodes Division P4SMA150CAHM3_A/I
- Part No.:
- P4SMA150CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA150CAHM3_A/I.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,800
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Product details
Overview
P4SMA150CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) in SMA (DO-214AC) package, designed for clamping voltage transients on signal or power lines. It features a 150 V standoff voltage (VWM), 165 V minimum breakdown voltage (VBR), 207 A peak pulse current (IPPM) at 10/1000 µs, 400 W peak pulse power rating, and AEC-Q101 qualification for automotive applications.
For engineers reviewing the P4SMA150CAHM3_A/I datasheet, P4SMA150CAHM3_A/I pinout, P4SMA150CAHM3_A/I application, or P4SMA150CAHM3_A/I 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, low leakage (<1 µA at VWM), and halogen-free RoHS compliance are required.
Technical Context
The P4SMA150CAHM3_A/I operates as a bidirectional avalanche diode with symmetrical clamping behavior in both polarities. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while the SMA package supports automated SMT placement and meets MSL level 1 per J-STD-020.
It delivers 400 W peak pulse power (10/1000 µs waveform) up to 91 V; above that threshold, derated to 300 W - confirmed for P4SMA150CAHM3_A/I per datasheet note (1). Thermal resistance is 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead), enabling reliable operation up to TJ = 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 150 V - maximum continuous reverse working voltage before clamping begins; defines safe operating margin for protected circuitry. |
| VBR (Breakdown Voltage) | 165–183 V at 1 mA - guaranteed avalanche initiation range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 207 V at IPPM - maximum voltage seen by downstream circuit during 207 A transient; critical for IC-level protection margin. |
| IPPM (Peak Pulse Current) | 207 A (10/1000 µs) - surge current handling capacity; validates immunity to IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges. |
| PPPM (Peak Pulse Power) | 400 W - transient energy absorption capability; sufficient for repetitive surge duty cycle ≤ 0.01 %. |
| ID (Reverse Leakage) | <1 µA at 150 V - negligible standby power loss and minimal signal distortion in high-impedance lines. |
| TJ max | 150 °C - maximum junction temperature; supports under-hood automotive environments and industrial enclosures. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102. Bidirectional device - no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Conducts during negative-going surges; forms symmetrical clamping path with cathode. |
| Cathode | Transient current entry (positive polarity) | Conducts during positive-going surges; enables bidirectional protection without external circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan. |
| 400 W peak pulse power | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-earth) in properly designed PCB layouts. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., EFT bursts). |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking or special handling. |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver signal pins and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector or IC pad to clamp ±200 V transients before reaching sensitive input stages. Use Value: Prevents latch-up or permanent damage to microcontrollers and analog front-ends while maintaining signal integrity below 150 V DC bias. |
Use Scenario: Safeguarding PLC digital input modules against field-wiring induced surges from solenoid coils, motor drives, or long cable runs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input lines, positioned upstream of optocoupler or Schmitt trigger inputs. Use Value: Enables >100,000 surge cycles without degradation, meeting IEC 61000-4-4 (EFT) and IEC 61000-4-5 requirements. |
| Telecom Power Rail Protection | Consumer USB/Display Port ESD Guard |
Use Scenario: Clamping 48 V DC telecom power feeds against lightning-induced surges entering via outdoor cabling or PoE injectors. IC Role / Device Role / Timing Role: Secondary protection stage after primary GDT or MOV, absorbing residual energy with precise 207 V clamping. Use Value: Limits rail collapse to <207 V during 207 A transients, preserving downstream DC-DC converter regulation and preventing brownout resets. |
Use Scenario: ESD and contact discharge protection on high-speed differential pairs (e.g., HDMI, USB 2.0) in set-top boxes and monitors. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) bidirectional TVS placed adjacent to connector to shunt ±15 kV HBM ESD pulses. Use Value: Maintains signal rise/fall times <1 ns while suppressing transients below IC damage thresholds (±2 kV CDM). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA | Same VWM (150 V), higher PPPM (600 W), larger SMB (DO-214AA) package (4.5 × 3.9 mm vs. 4.5 × 2.7 mm). | Preferred where board space allows larger footprint and higher surge margin is needed (e.g., mains-connected equipment). | Select SMBJ150CA when 600 W pulse power is required and PCB layout accommodates wider body; not drop-in due to different pad layout. |
| 1.5SMC150CA | Same VWM (150 V), identical clamping (207 V), but higher PPPM (1500 W); SMC (DO-214AB) package (7.1 × 6.2 mm). | Suitable for high-energy industrial surge protection where thermal mass and power handling outweigh size constraints. | Choose 1.5SMC150CA only if system-level surge tests exceed 400 W; requires full mechanical redesign due to larger footprint and thermal pad requirements. |
Compared with SMBJ150CA and 1.5SMC150CA, the P4SMA150CAHM3_A/I offers optimal balance of compact SMA size, AEC-Q101 qualification, and 400 W surge capability - making it the preferred choice for space-constrained automotive and industrial modules requiring validated automotive reliability without overspec'ing power rating.
Availability
P4SMA150CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor systems, industrial programmable logic controllers, and telecom power distribution units requiring stable component supply, halogen-free compliance, and AEC-Q101 traceability.
Supply support for P4SMA150CAHM3_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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series targets cost-sensitive, high-volume transient suppression needs across automotive, industrial, and consumer markets - delivering standardized TVS performance in compact, automated-placement-ready packages with rigorous qualification.
FAQ
What does the "CA" suffix mean in P4SMA150CAHM3_A/I?
The "CA" suffix in P4SMA150CAHM3_A/I denotes a bidirectional configuration - meaning the device provides symmetrical transient voltage clamping for both positive and negative polarity surges. Unlike unidirectional variants (e.g., P4SMA150A), it has no cathode marking and functions identically in either direction, simplifying layout for AC-coupled or floating signal lines.
Is P4SMA150CAHM3_A/I suitable for automotive applications?
Yes, P4SMA150CAHM3_A/I is AEC-Q101 qualified (as indicated by the "HM3" suffix and documentation revision), tested for temperature cycling, high-temperature reverse bias, and ESD per automotive stress requirements. Its 150 °C max junction temperature, MSL Level 1 rating, and halogen-free construction meet Tier-1 supplier specifications for under-hood and cabin ECU use.
What is the clamping voltage of P4SMA150CAHM3_A/I at rated surge current?
The clamping voltage (VC) of P4SMA150CAHM3_A/I is 207 V measured at its peak pulse current (IPPM) of 207 A under the standard 10/1000 µs waveform. This value is guaranteed per datasheet Table "ELECTRICAL CHARACTERISTICS" and defines the maximum voltage imposed on protected circuitry during worst-case surge events.
How does the HM3 suffix differ from E3 or M3 in P4SMA150CAHM3_A/I?
The "HM3" suffix in P4SMA150CAHM3_A/I indicates halogen-free, RoHS-compliant construction *and* AEC-Q101 qualification - distinguishing it from "E3" (RoHS commercial grade) and "M3" (halogen-free RoHS commercial grade). The "_A/I" denotes packaging: 13″ tape-and-reel (7500 pcs) with revision "A", verified in Vishay's ordering table.
Can P4SMA150CAHM3_A/I replace P4SMA150A in an existing design?
No - P4SMA150CAHM3_A/I is bidirectional, while P4SMA150A is unidirectional and features a cathode band. Substituting them requires verifying circuit polarity, revising layout for absence of polarity marking, and confirming that bidirectional clamping aligns with system-level surge requirements (e.g., AC signals or floating grounds). Electrical parameters differ slightly (e.g., ID spec), so functional validation is mandatory.
P4SMA150CAHM3_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:
- -
- Bidirectional Channels:
- 1
- 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)
P4SMA150CAHM3_A/I FAQ
1.How can I place an order for P4SMA150CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA150CAHM3_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 P4SMA150CAHM3_A/I reliable?
The price and inventory of P4SMA150CAHM3_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 P4SMA150CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA150CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA150CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA150CAHM3_A/I?
P4SMA150CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA150CAHM3_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 P4SMA150CAHM3_A/I?
For technical support, including P4SMA150CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA150CAHM3_A/I requirements.
6.How does Aetrix verify that P4SMA150CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA150CAHM3_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 P4SMA150CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA150CAHM3_A/I?
All P4SMA150CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA150CAHM3_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 P4SMA150CAHM3_A/I part is unused and in its original packaging.
Return procedure for P4SMA150CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA150CAHM3_A/I Tags
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