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Taiwan Semiconductor Corporation P4SMA24CH
- Part No.:
- P4SMA24CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA24CH.pdf
- Description:
- 400W, 24V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:7,442
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Product details
Overview
P4SMA24CH from Taiwan Semiconductor is a unidirectional 400W surface-mount transient voltage suppressor (TVS) diode with a working stand-off voltage of 19.4 V, breakdown voltage range 21.6–26.4 V at 1 mA, and clamping voltage of 34.7 V at 12 A peak pulse current. It protects DC power rails in automotive-grade SMPS and on-board DC/DC converters against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the P4SMA24CH datasheet, P4SMA24CH pinout, P4SMA24CH application, or P4SMA24CH equivalent, this device offers AEC-Q101 qualification, <1 ps response time, <1 µA leakage at 19.4 V, DO-214AC (SMA) package compatibility, and verified clamping performance under 10/1000 µs surge waveforms.
Technical Context
The P4SMA24CH uses a glass-passivated silicon junction optimized for fast transient suppression in automotive and industrial power systems. Its unidirectional configuration provides reverse-biased clamping only, with forward voltage limited to 3.5 V at 25 A surge current and operating junction temperature up to +150°C.
It meets ISO 7637-2 test requirements for vehicle electrical systems, including Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling noise), and is rated for moisture sensitivity level 1 per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 19.4 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 21.6–26.4 V @ 1 mA - Confirmed breakdown threshold ensures reliable turn-on during transients |
| VC@IPPM | 34.7 V @ 12 A - Clamping voltage limits downstream IC stress during 10/1000 µs surges |
| PPPM | 400 W - Peak pulse power rating defines maximum transient energy absorption capability |
| IR@VWM | <1 µA - Ultra-low leakage preserves efficiency in low-power standby circuits |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and high-temperature PCB layouts |
| Response time | <1.0 ps - Sub-picosecond switching ensures protection before sensitive circuitry is damaged |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, single-diode configuration with cathode band marking. Matte tin-plated leads meet J-STD-002 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND) in unidirectional TVS placement |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 24 V rail); conducts during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress-test requirements including temperature cycling, HTRB, and ESD |
| Glass passivated junction | Enhances long-term reliability and stability of breakdown voltage under thermal and humidity stress |
| ISO 7637-2 compliance | Guarantees immunity to standardized automotive transient pulses without external filtering |
| Moisture sensitivity level 1 | Enables standard SMT reflow without baking or special handling prior to assembly |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive for environmentally compliant manufacturing |
Applications
| Automotive Power Distribution | Industrial DC/DC Converters |
|---|---|
Use Scenario: Protection of 24 V supply lines in body control modules and lighting ECUs exposed to load-dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input rail to clamp reverse-energy transients before they reach PMICs or microcontrollers. Use Value: Limits clamped voltage to 34.7 V, staying well below 40 V absolute maximum ratings of common 24 V-rated power management ICs. | Use Scenario: Input-side surge suppression in isolated 24 V-to-5 V DC/DC converters used in factory automation sensors. IC Role / Device Role / Timing Role: Primary transient shunt on primary-side bus; absorbs 400 W pulses without degradation over >10,000 cycles. Use Value: Maintains system uptime by preventing latch-up or burnout in synchronous rectifier controllers during field-induced surges. |
| LED Driver Power Inputs | Telecom Power Interfaces |
Use Scenario: Standoff protection for constant-current LED drivers in commercial lighting fixtures subjected to lightning-induced surges on AC/DC front-ends. IC Role / Device Role / Timing Role: Secondary-level TVS after bulk capacitor, clamping residual spikes that bypass upstream MOVs. Use Value: Delivers sub-1 ps response to protect GaN FET gate drivers from overshoot exceeding 30 V. | Use Scenario: DC input protection on PoE-powered network switches operating from centralized 24–48 V supplies. IC Role / Device Role / Timing Role: Line-referenced clamping device on secondary-side DC bus, coordinated with upstream fuse and current-limiting resistor. Use Value: Withstands repeated 10/1000 µs surges up to 12 A while maintaining leakage <1 µA for low-quiescent-power standby modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | 600 W rating, SMB package (DO-214AA), 38.9 V clamping at 15.4 A | Higher power handling but larger footprint; requires PCB layout revision | Select when higher surge margin is needed and board space allows SMB footprint |
| 1.5SMC24AH | 1500 W rating, SMC package (DO-214AB), 38.9 V clamping at 38.5 A | Designed for higher-energy transients; not AEC-Q101 qualified | Prefer for non-automotive industrial systems requiring greater single-pulse robustness |
Compared with SMBJ24A and 1.5SMC24AH, the P4SMA24CH offers optimal balance of AEC-Q101 compliance, compact DO-214AC footprint, and precise 34.7 V clamping-critical for protecting modern 24 V automotive subsystems without overdesigning board area or cost.
Availability
P4SMA24CH is available at Aetrix Electronics and suitable for automotive power distribution, industrial DC/DC converters, LED driver inputs, and telecom power interfaces requiring stable component supply across production lifecycles.
Supply support for P4SMA24CH 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 MOSFETs for automotive and industrial markets.
The P4SMA24CH belongs to TSC's AEC-Q101-qualified P4SMAxH series of surface-mount TVS diodes, engineered specifically for robust transient suppression in 12 V and 24 V automotive electrical architectures.
FAQ
What is the polarity configuration of the P4SMA24CH?
The P4SMA24CH is a unidirectional TVS diode with cathode band marking indicating the clamping terminal. It conducts only in reverse bias above its breakdown voltage and blocks forward current up to 3.5 V at 25 A surge. This configuration is intended for DC line protection where polarity is fixed, unlike bidirectional variants (e.g., P4SMA24CH vs. P4SMA24CAH).
Does the P4SMA24CH meet automotive qualification standards?
Yes, the P4SMA24CH is AEC-Q101 qualified and tested per automotive stress requirements including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge. It also complies with ISO 7637-2 Pulse 1/2a/2b/3a/3b for vehicle electrical system immunity, making it suitable for under-hood and body electronics applications.
What is the maximum clamping voltage of the P4SMA24CH under surge conditions?
The P4SMA24CH has a maximum clamping voltage (VC) of 34.7 V at 12 A peak pulse current using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected downstream components experience no more than 34.7 V during standardized surge events.
Can the P4SMA24CH be used in bidirectional signal-line protection?
No, the P4SMA24CH is unidirectional and unsuitable for bidirectional signal-line protection. For symmetrical transient suppression on data or communication lines, use the bidirectional variant P4SMA24CAH, which provides identical clamping performance in both polarities and carries the CAH suffix per TSC's ordering nomenclature.
What packaging and reel quantity is offered for the P4SMA24CH?
The P4SMA24CH is supplied in DO-214AC (SMA) package format on 7,500-piece tape-and-reel. The reel conforms to EIA-481 standards, and terminals are matte tin-plated for compatibility with lead-free and SnPb reflow processes per J-STD-002.
P4SMA24CH 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA24CH FAQ
1.How can I place an order for P4SMA24CH through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA24CH 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 P4SMA24CH reliable?
The price and inventory of P4SMA24CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA24CH is usually 5 days.
3.What payment methods are accepted for P4SMA24CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA24CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA24CH?
P4SMA24CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA24CH 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 P4SMA24CH?
For technical support, including P4SMA24CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA24CH requirements.
6.How does Aetrix verify that P4SMA24CH is sourced from the original manufacturer or authorized distributors?
All P4SMA24CH 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 P4SMA24CH meets industry standards.
7.What is the process for return or replacement of P4SMA24CH?
All P4SMA24CH units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA24CH, 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 P4SMA24CH part is unused and in its original packaging.
Return procedure for P4SMA24CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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