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Taiwan Semiconductor Corporation P4SMA24C
- Part No.:
- P4SMA24C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA24C.pdf
- Description:
- 400W, 24V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:5,380
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Product details
Overview
P4SMA24C from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for robust overvoltage protection in DC power rails and signal lines. It features a 21.6–26.4 V breakdown voltage (VBR), 19.4 V working stand-off voltage (VWM), 34.7 V maximum clamping voltage (VC) at 12 A peak pulse current, and 400 W peak pulse power rating per 10/1000 µs waveform - deployed in automotive body control modules, industrial SMPS inputs, and LED driver surge protection.
For engineers reviewing the P4SMA24C datasheet, P4SMA24C pinout, P4SMA24C application, or P4SMA24C equivalent, key selection criteria include bidirectional clamping capability, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, <1 µA reverse leakage at VWM, glass-passivated junction reliability, and DO-214AC thermal performance up to +150 °C junction temperature.
Technical Context
The P4SMA24C implements a single-die, bidirectional avalanche structure optimized for fast transient suppression with sub-1 ps response time. Its symmetrical I-V characteristics enable identical clamping in both polarities, eliminating polarity sensitivity in AC-coupled or floating bus protection.
It operates across –55 °C to +150 °C junction temperature range and meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1 - enabling direct reflow assembly without baking. The device sustains 40 A non-repetitive forward surge (8.3 ms half-sine) and maintains <3.5 V forward voltage at 25 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 21.6 V / 26.4 V - ensures reliable avalanche conduction onset within defined tolerance band at 1 mA test current |
| VWM | 19.4 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 34.7 V at 12 A - clamping voltage during 10/1000 µs surge, limiting downstream circuit stress |
| PPPM | 400 W - peak pulse power handling capacity under standardized surge waveform |
| IR @ VWM | <1 µA - ultra-low leakage preserves efficiency in high-impedance sensing or battery-backed circuits |
| TJ max | +150 °C - enables operation in under-hood automotive or enclosed industrial environments |
| Package | DO-214AC (SMA) - industry-standard surface-mount outline with 0.060 g mass and UL 94V-0 molding compound |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with coplanar matte tin-plated leads, cathode band marking for unidirectional variants; P4SMA24C is bidirectional and marked with "BLJ" code - no polarity indicator required. Leads comply with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction terminals | Interchangeable connection points - no orientation dependency; both terminals conduct identically during positive or negative transients |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Enhances long-term stability and moisture resistance vs. epoxy-passivated alternatives, critical for automotive under-hood reliability |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validated for automotive load dump and inductive switching immunity without external filtering components |
| Fast response time <1.0 ps | Clamps ESD and lightning-induced surges before sensitive ICs experience overstress - faster than most silicon diodes |
| RoHS & halogen-free (IEC 61249-2-21) | Meets global environmental mandates and supports lead-free reflow profiles without compromising thermal robustness |
| Single-die bidirectional configuration | Reduces BOM count vs. dual-unidirectional TVS solutions while maintaining symmetrical clamping performance |
Applications
| Automotive Body Control Module (BCM) | Industrial Switching Mode Power Supply (SMPS) |
|---|---|
Use Scenario: Protects LIN bus transceivers and microcontroller I/O pins from load dump and alternator ripple in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Bidirectional transient clamp on low-speed communication lines and power input rails. Use Value: Maintains system uptime by suppressing ISO 7637-2 Pulse 2b (inductive switch-off) transients up to 100 V without latch-up or degradation. | Use Scenario: Safeguards primary-side MOSFET gate drivers and secondary-side rectifiers against flyback spikes in 24–48 V industrial DC/DC converters. IC Role / Device Role / Timing Role: Primary-side overvoltage clamp on transformer snubber networks and output rail surge limiter. Use Value: Limits clamping voltage to 34.7 V at 12 A, preventing secondary-side regulator overvoltage failure during 400 W surge events. |
| LED Driver Input Protection | Smart Building Sensor Node Interface |
Use Scenario: Shields constant-current LED driver ICs from mains-borne surges in outdoor streetlight applications with wide ambient temperature swings. IC Role / Device Role / Timing Role: Front-end transient suppressor on AC/DC rectified input before bulk capacitor. Use Value: Withstands repeated 10/1000 µs surges up to 400 W while maintaining <1 µA leakage at 19.4 V, minimizing standby power loss. | Use Scenario: Protects RS-485 transceivers and microcontroller GPIOs in battery-powered occupancy sensors exposed to ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp on differential data lines and supply rails. Use Value: Sub-1 ps response ensures clamping occurs before transceiver internal protection triggers, preserving signal integrity and longevity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA (Bourns) | Same DO-214AA package; 24 V nominal VBR; 38.9 V VC @ 10.3 A; 600 W PPPM | Higher clamping voltage and power rating - better suited for higher-energy surges but requires larger board area | Select SMBJ24CA when surge energy exceeds 400 W or layout allows DO-214AA footprint |
| 1.5KE24CA (ON Semiconductor) | Through-hole DO-15 package; same VBR/VC specs; 1500 W PPPM; higher IFSM (200 A) | Not surface-mountable - incompatible with automated SMT lines; used in legacy or high-reliability through-hole designs | Choose 1.5KE24CA only for manual assembly or where through-hole mounting is mandated by mechanical constraints |
Compared with SMBJ24CA and 1.5KE24CA, the P4SMA24C offers optimal balance of SMT compatibility, 400 W surge handling, and compact DO-214AC footprint - making it preferred for space-constrained, high-volume automotive and industrial PCBs requiring RoHS-compliant reflow assembly.
Availability
P4SMA24C is available at Aetrix Electronics and suitable for automotive body electronics, industrial SMPS design, and smart lighting systems requiring stable component supply, full traceability, and lifecycle continuity support.
Supply support for P4SMA24C 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 Company (TSC) is a vertically integrated Taiwanese semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and Zener diodes - serving automotive, industrial, and consumer markets since 1979.
The P4SMA series belongs to TSC's high-reliability surface-mount TVS portfolio, engineered specifically for ISO 7637-2-compliant automotive electronics and ruggedized industrial power interfaces where fast clamping, low leakage, and thermal stability are mandatory.
FAQ
What is the polarity configuration of P4SMA24C?
The P4SMA24C is a bidirectional TVS diode - its anode and cathode terminals are functionally identical and interchangeable. Unlike unidirectional variants (e.g., P4SMA24A), it provides symmetrical clamping for both positive and negative transients without requiring orientation during placement. This makes P4SMA24C ideal for AC-coupled lines, floating buses, or differential signal protection where polarity cannot be guaranteed.
Does P4SMA24C meet automotive qualification standards?
Yes, P4SMA24C meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements for transient immunity in 12 V automotive systems. It is also qualified to JESD201 Class 2 for tin whisker resistance and J-STD-020 Moisture Sensitivity Level 1 - confirming suitability for lead-free reflow without pre-baking. While not AEC-Q200 certified as a standalone component, its construction and test validation align with automotive-grade reliability expectations for TVS applications.
What is the maximum clamping voltage of P4SMA24C under surge conditions?
The maximum clamping voltage (VC) of P4SMA24C is 34.7 V when subjected to a 10/1000 µs standard surge waveform at 12 A peak impulse current (IPPM). This value is measured per ANSI/IEEE C62.35 and represents the upper limit of voltage seen by downstream circuitry during worst-case transient events - critical for ensuring protected ICs remain within their absolute maximum ratings.
Can P4SMA24C replace P4SMA24A in a design?
No - P4SMA24C and P4SMA24A are not interchangeable. P4SMA24C is bidirectional with symmetrical clamping, while P4SMA24A is unidirectional and requires correct cathode orientation. Substituting one for the other may result in failed protection during reverse-polarity transients or unintended conduction. Always verify circuit topology: use P4SMA24C for AC, floating, or polarity-agnostic protection; use P4SMA24A only for DC rails with defined polarity and cathode grounding.
What is the thermal derating behavior of P4SMA24C above 25°C ambient?
P4SMA24C follows a linear thermal derating curve per Figure 2 in the datasheet: its peak pulse power (PPPM) decreases from 400 W at 25°C to zero at 150°C junction temperature. At 85°C ambient (assuming typical PCB thermal resistance), usable surge power drops to approximately 260 W. Designers must calculate actual junction temperature rise using θJA (estimated ~100 °C/W for DO-214AC on 1-in² copper) and apply derating to ensure safe operation under sustained high-temperature conditions.
P4SMA24C 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):
- 19.4V
- Voltage - Breakdown (Min):
- 21.6V
- Voltage - Clamping (Max) @ Ipp:
- 34.7V
- Current - Peak Pulse (10/1000µs):
- 12A
- 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)
P4SMA24C FAQ
1.How can I place an order for P4SMA24C through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA24C 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 P4SMA24C reliable?
The price and inventory of P4SMA24C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA24C is usually 5 days.
3.What payment methods are accepted for P4SMA24C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA24C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA24C?
P4SMA24C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA24C 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 P4SMA24C?
For technical support, including P4SMA24C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA24C requirements.
6.How does Aetrix verify that P4SMA24C is sourced from the original manufacturer or authorized distributors?
All P4SMA24C 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 P4SMA24C meets industry standards.
7.What is the process for return or replacement of P4SMA24C?
All P4SMA24C units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA24C, 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 P4SMA24C part is unused and in its original packaging.
Return procedure for P4SMA24C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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