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Vishay General Semiconductor - Diodes Division P4SMA27CA-M3/5A
- Part No.:
- P4SMA27CA-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA27CA-M3/5A.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,971
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Product details
Overview
P4SMA27CA-M3/5A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 27 V breakdown voltage (VBR = 25.7–28.4 V at 1 mA), 37.5 V maximum clamping voltage (VC) at 10.7 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - suitable for protecting MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P4SMA27CA-M3/5A datasheet, P4SMA27CA-M3/5A pinout, P4SMA27CA-M3/5A application, or P4SMA27CA-M3/5A equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.33), halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification readiness via HM3 variant.
Technical Context
This device operates as a voltage-clamped surge protector using an avalanche junction structure. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints, and its glass-passivated chip junction ensures stable leakage performance and long-term reliability under repetitive transient stress.
The P4SMA27CA-M3/5A delivers 400 W peak pulse power (derated to 300 W above 91 V) with fast response time (<1 ns), low incremental surge resistance, and thermal resistance of 120 °C/W (junction-to-ambient). It meets MSL Level 1 per J-STD-020 and supports reflow soldering up to 260 °C peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at 1 mA - defines precise avalanche onset threshold for reliable overvoltage triggering |
| VWM | 23.1 V - maximum continuous reverse working voltage before leakage exceeds 1 µA |
| VC @ IPPM | 37.5 V at 10.7 A - clamping voltage during 10/1000 µs surge, limiting downstream component stress |
| PPPM | 400 W - peak transient energy absorption capacity under standard waveform, enabling robust ESD/Lightning immunity |
| IPPM | 10.7 A - maximum non-repetitive surge current the device safely conducts without degradation |
| TJ max | +150 °C - maximum junction temperature supporting operation in under-hood or high-ambient industrial environments |
| Package | SMA (DO-214AC) - industry-standard SMD outline with 5.0 mm × 5.0 mm copper pad thermal design support |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional - no polarity marking; symmetrical terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically in bidirectional mode; no cathode band marking required |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC, differential, or floating signal lines without orientation constraints |
| 400 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-earth) in properly designed layouts |
| Halogen-free, RoHS-compliant (M3) | Meets environmental compliance requirements for consumer, industrial, and automotive supply chains |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly processes without moisture sensitivity handling |
| AEC-Q101 qualified variants available | HM3 suffix versions are automotive-qualified - P4SMA27CA-HM3_X supports automotive-grade reliability validation |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector entry point to clamp ±30 V surges before reaching signal conditioning circuitry. Use Value: Prevents latch-up or permanent damage to op-amps and ADCs by limiting transient voltage to ≤37.5 V while maintaining <1 µA leakage at 23.1 V operating bias. |
Use Scenario: Safeguarding 4–20 mA current loop or 0–10 V analog inputs in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input terminals, coordinated with series current-limiting resistors and filtering capacitors. Use Value: Enables >20 kV ESD contact discharge immunity and withstands 1 kV/50 Ω ring wave transients per IEC 61000-4-12 without derating. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding Ethernet PHY or RS-485 transceivers on telecom line cards from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-stage transient suppressor on differential pair, paired with common-mode chokes and secondary GDTs. Use Value: Clamps differential surges to <40 V within <1 ns, preserving signal integrity and preventing transceiver latch-up during 10/1000 µs events. |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in washing machines, HVAC blowers, or power tools. IC Role / Device Role / Timing Role: Parallel-mounted across motor terminals to absorb inductive kickback energy during PWM commutation. Use Value: Handles repetitive 400 W pulses without parameter drift, extending MOSFET lifetime and eliminating need for snubber RC networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27CA | Higher 600 W PPPM, larger SMB (DO-214AA) package, 38.9 V VC at 15.4 A | Better suited for higher-energy surges; requires larger PCB footprint and thermal pad area | Select when system-level surge testing exceeds IEC 61000-4-5 Level 4 or when layout allows SMB footprint |
| 1.5SMC27CA | 1500 W PPPM, DO-214AB package, 43.0 V VC at 34.9 A, higher leakage (5 µA) | Targeted at primary-level AC/DC input protection rather than signal-line clamping | Choose for front-end mains-side protection where higher clamping voltage is acceptable and space permits larger case |
Compared with SMBJ27CA and 1.5SMC27CA, the P4SMA27CA-M3/5A offers optimal balance of compact SMA footprint, precise 27 V clamping, and 400 W capability - making it ideal for space-constrained signal-path protection where moderate surge levels apply.
Availability
P4SMA27CA-M3/5A is available at Aetrix Electronics and suitable for industrial automation, automotive sensor modules, and telecom infrastructure requiring stable component supply with halogen-free compliance and tape-and-reel delivery (7500 pcs per reel).
Supply support for P4SMA27CA-M3/5A 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 is engineered for cost-effective, high-volume transient suppression in consumer, industrial, and automotive electronics - delivering consistent clamping performance and AEC-Q101-ready variants in standardized SMD packages.
FAQ
What does the "CA" suffix indicate in P4SMA27CA-M3/5A?
The "CA" suffix denotes a bidirectional configuration - meaning the P4SMA27CA-M3/5A provides symmetrical clamping for both positive and negative transients without polarity dependence. This distinguishes it from unidirectional variants (e.g., P4SMA27A), which require correct cathode orientation and only protect against one polarity of surge.
Is P4SMA27CA-M3/5A AEC-Q101 qualified?
The base P4SMA27CA-M3/5A is not AEC-Q101 qualified; however, the automotive-grade variant P4SMA27CA-HM3_X (where "X" is revision code A, B, etc.) is fully AEC-Q101 qualified. The "HM3" suffix indicates halogen-free, RoHS-compliant construction with automotive reliability testing per AEC-Q101 standards.
What is the maximum clamping voltage of P4SMA27CA-M3/5A and how is it measured?
The maximum clamping voltage (VC) of P4SMA27CA-M3/5A is 37.5 V, measured at 10.7 A peak pulse current using the standardized 10/1000 µs double-exponential waveform. This value reflects worst-case voltage seen by protected circuitry during a surge event and is guaranteed across the full operating temperature range.
Can P4SMA27CA-M3/5A be used in place of a unidirectional TVS like P4SMA27A?
No - P4SMA27CA-M3/5A is bidirectional and lacks polarity marking, while P4SMA27A is unidirectional with a cathode band. Substituting them requires verifying circuit topology: bidirectional use is mandatory for AC-coupled or differential lines; unidirectional use is required for DC-biased rails where forward conduction must be blocked.
What is the thermal resistance and power derating behavior of P4SMA27CA-M3/5A?
P4SMA27CA-M3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W. Its peak pulse power rating drops linearly above 25 °C ambient: at 75 °C, PPPM is reduced to ~320 W; at 125 °C, it falls to ~200 W. Derating curves are provided in Figure 2 of the Vishay datasheet 88367.
P4SMA27CA-M3/5A 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):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 10.7A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA27CA-M3/5A FAQ
1.How can I place an order for P4SMA27CA-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA27CA-M3/5A 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 P4SMA27CA-M3/5A reliable?
The price and inventory of P4SMA27CA-M3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA27CA-M3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA27CA-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA27CA-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA27CA-M3/5A?
P4SMA27CA-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA27CA-M3/5A 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 P4SMA27CA-M3/5A?
For technical support, including P4SMA27CA-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA27CA-M3/5A requirements.
6.How does Aetrix verify that P4SMA27CA-M3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA27CA-M3/5A 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 P4SMA27CA-M3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA27CA-M3/5A?
All P4SMA27CA-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA27CA-M3/5A, 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 P4SMA27CA-M3/5A part is unused and in its original packaging.
Return procedure for P4SMA27CA-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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