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Taiwan Semiconductor Corporation P4SMA16CH
- Part No.:
- P4SMA16CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA16CH.pdf
- Description:
- 400W, 16V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:3,684
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Product details
Overview
P4SMA16CH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary-side overvoltage protection in DC power rails. It features a 14.4–17.6 V breakdown voltage (VBR), 12.9 V working stand-off voltage (VWM), 23.5 V clamping voltage (VC) at 17.8 A peak pulse current, 400 W peak pulse power rating (10/1000 µs), and operates across –55 °C to +150 °C junction temperature range.
For engineers reviewing the P4SMA16CH datasheet, P4SMA16CH pinout, P4SMA16CH application, or P4SMA16CH equivalent, key selection criteria include its DO-214AC (SMA) package compatibility with automated placement, AEC-Q101 qualification for automotive environments, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, <1 µA reverse leakage at VWM, and sub-1 ps response time-critical for protecting sensitive SMPS controllers and DC/DC converters against ESD and load dump transients.
Technical Context
The P4SMA16CH implements a glass-passivated silicon junction optimized for fast transient suppression in unidirectional configurations. Its clamping behavior is defined by a 10/1000 µs double-exponential surge waveform, with VC = 23.5 V measured at IPPM = 17.8 A, ensuring predictable voltage limiting during automotive load-dump events.
It supports bidirectional operation only when specified with CH or CAH suffixes per family documentation-but the P4SMA16CH is explicitly unidirectional, as confirmed by cathode band marking and single-die configuration. Thermal derating follows Fig.2, maintaining 400 W capability only at TA = 25 °C and linearly decreasing above that ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1 mA | 14.4–17.6 V - ensures reliable turn-on before downstream IC damage thresholds in 12 V systems |
| VWM | 12.9 V - maximum continuous reverse voltage without significant leakage; compatible with 12 V nominal rail |
| VC @ IPPM = 17.8 A | 23.5 V - clamped voltage during 400 W transient; stays below typical 24 V system absolute max ratings |
| PPPM | 400 W - peak pulse power handling per 10/1000 µs waveform; sufficient for ISO 7637-2 Pulse 5a (load dump) |
| IR @ VWM | <1 µA - negligible standby power loss and no measurable impact on high-impedance sensing nodes |
| Response Time | <1 ps - enables suppression of ESD events (IEC 61000-4-2) before logic-level devices latch up |
| TJ Range | –55 °C to +150 °C - supports under-hood automotive placement and industrial power supply locations |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, single-ended unidirectional configuration with molded epoxy case meeting UL 94V-0, matte tin-plated leads, and cathode band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input reference node for transient energy diversion | Connected to protected line (e.g., 12 V rail); conducts during overvoltage to shunt current to ground |
| Cathode | Clamping output / ground return path | Connected to system ground; defines polarity and establishes VC reference during clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Glass passivated junction | Enhances long-term stability and moisture resistance vs. polymer-passivated alternatives; critical for humid environments |
| ISO 7637-2 compliant | Withstands Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (capacitive coupling) waveforms |
| Moisture sensitivity level 1 | No floor-life limitation or bake requirement prior to reflow; simplifies SMT manufacturing flow |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU; suitable for green electronics programs |
Applications
| Switching Mode Power Supply (SMPS) | Automotive On-Board DC/DC Converter |
|---|---|
Use Scenario: Protection of primary-side MOSFET gate drivers and controller ICs against input voltage surges during cold-crank or load dump. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND to clamp transients before they reach switching controller. Use Value: Limits peak voltage to 23.5 V during 400 W surges, preventing gate oxide rupture in 30 V-rated MOSFETs and brownout in 5 V bias rails. | Use Scenario: Input rail protection in 12 V-to-3.3 V/5 V buck converters powering ADAS sensors or infotainment ECUs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on converter input, coordinated with upstream fuse and downstream LC filtering. Use Value: Sub-1 ps response ensures clamping occurs before transient propagation through ferrite beads, preserving regulation integrity. |
| Industrial Lighting Driver | USB-C Power Delivery Adapter |
Use Scenario: Surge protection on constant-current LED driver inputs exposed to AC line transients or lightning-induced surges. IC Role / Device Role / Timing Role: First-line defense on DC bus feeding boost/buck-boost controller ICs and current-sense amplifiers. Use Value: 12.9 V VWM allows stable operation across 12 V ±10% input range while clamping >20 V spikes to safe levels. | Use Scenario: Input-stage transient suppression in compact USB-C PD adapters where space-constrained PCB layout limits filter component count. IC Role / Device Role / Timing Role: Standoff device placed directly at AC-DC rectifier output to absorb residual line surges before PWM controller. Use Value: DO-214AC footprint enables high-density placement adjacent to bridge rectifier; <1 µA leakage avoids efficiency penalty at light load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16A | DO-214AA (SMB) package; 16 V VWM, 25.5 V VC @ 15.7 A; same 400 W rating but higher clamping voltage | Same automotive and industrial use cases; slightly larger footprint may limit routing density | Select SMBJ16A if board space permits larger package and higher clamping margin is acceptable |
| 1.5KE16CA | Through-hole DO-15; bidirectional; 16 V VWM, 25.6 V VC @ 15.6 A; 1500 W rating but slower response (~1 ns) | Not suitable for automated SMT lines; requires wave soldering; used in legacy or high-energy non-automotive designs | Choose 1.5KE16CA only for through-hole prototyping or repair where rework tolerance outweighs performance trade-offs |
Compared with SMBJ16A and 1.5KE16CA, the P4SMA16CH delivers tighter clamping (23.5 V vs. ≥25.5 V), faster response (<1 ps vs. ~1 ns), and SMT-ready DO-214AC packaging-making it optimal for space-constrained, high-reliability automotive and industrial DC/DC front-end protection.
Availability
P4SMA16CH is available at Aetrix Electronics and suitable for switching mode power supplies, automotive DC/DC converters, and industrial lighting drivers requiring stable component supply, AEC-Q101 qualification, and ISO 7637-2 compliance.
Supply support for P4SMA16CH 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive, industrial, and consumer markets.
The P4SMA16CH belongs to TSC's P4SMAxH series-a family of 400 W surface-mount TVS diodes engineered for robust transient immunity in automotive electronics and high-reliability power conversion systems.
FAQ
What is the polarity configuration of the P4SMA16CH?
The P4SMA16CH is a unidirectional TVS diode, indicated by its cathode band marking and single-die construction. It conducts only when anode voltage exceeds cathode voltage by ≥VBR, making it suitable for DC rail protection where polarity is fixed. Bidirectional variants require CH or CAH suffixes per family documentation-not applicable to P4SMA16CH.
Does the P4SMA16CH meet AEC-Q101 requirements for automotive use?
Yes, the P4SMA16CH is explicitly AEC-Q101 qualified per the provided datasheet. This includes stress testing for temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge-validating its suitability for under-hood and chassis-mounted automotive applications such as body control modules and infotainment power supplies.
What is the maximum clamping voltage of the P4SMA16CH under standard test conditions?
The P4SMA16CH has a maximum clamping voltage (VC) of 23.5 V when subjected to a 10/1000 µs surge waveform at IPPM = 17.8 A. This value is measured per ANSI/IEEE C62.35 and ensures downstream components rated for ≤24 V operation remain within safe operating limits during transient events.
Can the P4SMA16CH be used in bidirectional signal line protection?
No-the P4SMA16CH is unidirectional and not rated for bidirectional operation. For AC or dual-polarity signal lines, engineers must select a bidirectional variant (e.g., P4SMA16CH is not interchangeable with P4SMA16CAH). Using P4SMA16CH on bidirectional lines risks failure during negative excursions due to lack of reverse conduction capability.
What is the moisture sensitivity level (MSL) of the P4SMA16CH and how does it affect assembly?
The P4SMA16CH has a moisture sensitivity level (MSL) of 1 per J-STD-020, meaning it has unlimited floor life and requires no baking prior to reflow soldering. This eliminates handling constraints in SMT lines, reduces process risk, and supports high-throughput automated placement without humidity-related popcorning concerns during lead-free reflow profiles.
P4SMA16CH 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):
- 12.9V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 23.5V
- Current - Peak Pulse (10/1000µs):
- 17.8A
- 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)
P4SMA16CH FAQ
1.How can I place an order for P4SMA16CH through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA16CH 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 P4SMA16CH reliable?
The price and inventory of P4SMA16CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA16CH is usually 5 days.
3.What payment methods are accepted for P4SMA16CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA16CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA16CH?
P4SMA16CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA16CH 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 P4SMA16CH?
For technical support, including P4SMA16CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA16CH requirements.
6.How does Aetrix verify that P4SMA16CH is sourced from the original manufacturer or authorized distributors?
All P4SMA16CH 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 P4SMA16CH meets industry standards.
7.What is the process for return or replacement of P4SMA16CH?
All P4SMA16CH units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA16CH, 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 P4SMA16CH part is unused and in its original packaging.
Return procedure for P4SMA16CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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