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Taiwan Semiconductor Corporation P4SMA27CA
- Part No.:
- P4SMA27CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA27CA.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,133
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Product details
Overview
P4SMA27CA from Taiwan Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in DC power rails and signal lines. It features a 27 V breakdown voltage (VBR min/max = 24.3–29.7 V), 21.8 V working stand-off voltage (VWM), 39.1 V clamping voltage (VC) at 10.7 A peak pulse current, and 400 W peak pulse power rating under 10/1000 µs waveform - deployed in switching mode power supplies, on-board DC/DC converters, and lighting systems.
For engineers reviewing the P4SMA27CA datasheet, P4SMA27CA pinout, P4SMA27CA application, or P4SMA27CA equivalent, key selection criteria include bidirectional clamping capability, DO-214AC (SMA) package compatibility, sub-1 ps response time, <1 µA reverse leakage at VWM, and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive-grade transient immunity.
Technical Context
The P4SMA27CA implements a glass-passivated silicon junction optimized for fast transient suppression without degradation under repetitive surge stress. Its bidirectional configuration enables symmetrical clamping in AC-coupled or floating circuits, eliminating polarity concerns during layout or assembly.
It operates across –55 °C to +150 °C junction temperature range, supports 40 A non-repetitive forward surge current (IFSM), and maintains stable VBR with a temperature coefficient of 0.096 %/°C - enabling predictable performance in thermally varying environments such as automotive engine compartments or industrial power modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 21.8 V - maximum continuous reverse operating voltage before significant leakage begins |
| VBR @ IT=1 mA | 24.3–29.7 V - verified breakdown threshold ensuring reliable triggering above system nominal voltage |
| VC @ IPPM=10.7 A | 39.1 V - clamped voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 400 W - peak pulse power handling capacity per single transient event |
| IR @ VWM | <1 µA - negligible standby power loss and minimal impact on high-impedance sensing nodes |
| Response Time | <1.0 ps - near-instantaneous junction response to ESD or lightning-induced transients |
| TJ Range | –55 °C to +150 °C - validated operation in under-hood, industrial, and wide-temperature embedded applications |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, bi-directional configuration with cathode band omitted (no polarity marking required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Identical terminals - bidirectional clamping allows either terminal to serve as input or return; no orientation dependency in PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhanced reliability and long-term stability under thermal cycling and humidity exposure |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validated immunity to automotive load-dump and inductive-switching transients |
| Moisture sensitivity level 1 (J-STD-020) | Zero bake requirement prior to reflow; compatible with standard SMT assembly lines |
| RoHS & halogen-free (IEC 61249-2-21) | Meets global environmental compliance mandates without compromising surge performance |
Applications
| Switching Mode Power Supply (SMPS) | On-Board DC/DC Converter |
|---|---|
Use Scenario: Protection of primary-side MOSFET gates and secondary-side rectifier inputs against flyback spikes and line surges. IC Role / Device Role / Timing Role: Bidirectional TVS clamping device placed across input/output rails to limit transient voltage excursions. Use Value: Prevents gate oxide rupture and rectifier avalanche failure by clamping to ≤39.1 V during 400 W surges. | Use Scenario: Safeguarding low-voltage logic rails (e.g., 3.3 V, 5 V, 12 V) in automotive body control modules and industrial PLCs. IC Role / Device Role / Timing Role: Standoff protector between isolated DC/DC stages and microcontroller power domains. Use Value: Enables uninterrupted operation during battery-load-dump events (ISO 7637-2 Pulse 5a) with <1 µA leakage at 21.8 V. |
| LED Lighting Driver | Automotive Infotainment Interface |
Use Scenario: Suppressing inductive kickback from LED string current regulators and PWM dimming FETs. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor across constant-current driver output terminals. Use Value: Maintains luminous consistency by preventing LED driver IC latch-up during 10/1000 µs transients up to 10.7 A. | Use Scenario: Protecting CAN, LIN, or USB data lines from ESD and coupled transients in head unit and display subsystems. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp on differential bus lines upstream of transceivers. Use Value: Preserves signal integrity with sub-1 ps response and no polarity constraints on compact PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27CA (Bourns) | Same DO-214AA (SMB) package; 600 W PPPM; VC = 43.5 V @ 13.8 A | Higher power handling but larger footprint; requires PCB pad revision | Select when higher surge margin is needed and board space permits SMB package |
| 1.5KE27CA (ON Semiconductor) | Through-hole DO-15 package; 1500 W PPPM; VC = 41.5 V @ 36.2 A | Not SMT-compatible; suited for prototyping or legacy through-hole designs | Choose only for manual assembly or where thermal mass of axial lead improves sustained surge dissipation |
Compared with SMBJ27CA and 1.5KE27CA, the P4SMA27CA offers optimal balance of 400 W surge capability, DO-214AC (SMA) footprint compatibility, and ultra-low leakage - making it ideal for space-constrained, high-density automotive and industrial SMT power rail protection.
Availability
P4SMA27CA is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, and LED lighting drivers requiring stable component supply across automotive, industrial, and consumer production programs.
Supply support for P4SMA27CA 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power management components.
The P4SMA27CA belongs to TSC's P4SMAx family of surface-mount TVS diodes engineered specifically for high-reliability transient suppression in automotive electronics, industrial power systems, and energy-efficient lighting - emphasizing ISO 7637-2 compliance and J-STD-020 Level 1 manufacturability.
FAQ
What is the clamping voltage of the P4SMA27CA under standard 10/1000 µs surge conditions?
The P4SMA27CA has a maximum clamping voltage (VC) of 39.1 V when subjected to a 10.7 A peak pulse current with a 10/1000 µs waveform. This value is measured per JEDEC/ANSI standards and ensures downstream circuitry remains within safe voltage limits during transient events. The P4SMA27CA achieves this while maintaining low leakage and fast response, making it suitable for protecting sensitive 24 V system rails.
Is the P4SMA27CA unidirectional or bidirectional, and how does that affect PCB layout?
The P4SMA27CA is a bidirectional TVS diode, indicated by the "CA" suffix, meaning it provides symmetrical clamping in both polarities without cathode marking. This eliminates orientation constraints during placement - either terminal may connect to any node in the protected circuit. The P4SMA27CA thus simplifies layout, reduces assembly errors, and supports AC-coupled or floating signal line protection without polarity verification.
Does the P4SMA27CA meet automotive transient immunity standards?
Yes, the P4SMA27CA meets ISO 7637-2 requirements for Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling), as confirmed in Taiwan Semiconductor's official documentation. Its 400 W peak pulse rating, 39.1 V clamping, and –55 °C to +150 °C operating range make the P4SMA27CA appropriate for front-end protection in automotive ECUs, body controllers, and infotainment power domains.
What is the maximum reverse leakage current for the P4SMA27CA at its working voltage?
The P4SMA27CA exhibits a maximum reverse leakage current (IR) of 1 µA when biased at its rated working stand-off voltage (VWM) of 21.8 V. This ultra-low leakage preserves efficiency in battery-powered and high-impedance monitoring circuits. Verified at 25 °C and consistent across the full operating temperature range, this specification ensures the P4SMA27CA introduces negligible loading in precision analog or always-on power-rail monitoring applications.
Can the P4SMA27CA be used in place of the P4SMA27A, and what is the key functional difference?
No - the P4SMA27CA and P4SMA27A are functionally distinct: the "CA" suffix denotes bidirectional operation, while "A" indicates unidirectional with cathode marking. Substituting P4SMA27CA for P4SMA27A would remove polarity dependency but may alter clamping symmetry in DC-biased circuits. Always verify circuit topology; the P4SMA27CA is not a drop-in replacement for P4SMA27A unless bidirectional protection is explicitly required and validated.
P4SMA27CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA
- 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):
- 11A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA27CA FAQ
1.How can I place an order for P4SMA27CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA27CA 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 reliable?
The price and inventory of P4SMA27CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA27CA is usually 5 days.
3.What payment methods are accepted for P4SMA27CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA27CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA27CA?
P4SMA27CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA27CA 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?
For technical support, including P4SMA27CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA27CA requirements.
6.How does Aetrix verify that P4SMA27CA is sourced from the original manufacturer or authorized distributors?
All P4SMA27CA 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 meets industry standards.
7.What is the process for return or replacement of P4SMA27CA?
All P4SMA27CA units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA27CA, 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 part is unused and in its original packaging.
Return procedure for P4SMA27CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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