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Taiwan Semiconductor Corporation P4SMA16H
- Part No.:
- P4SMA16H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA16H.pdf
- Description:
- 400W, 16V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:2,230
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Product details
Overview
P4SMA16H from Taiwan Semiconductor is a unidirectional 400W surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, with breakdown voltage 14.4–17.6 V at 1 mA test current, working stand-off voltage 12.9 V, clamping voltage 23.5 V at 17.8 A peak pulse current, and AEC-Q101 qualification for automotive-grade surge protection in DC/DC converters.
For engineers reviewing the P4SMA16H datasheet, P4SMA16H pinout, P4SMA16H application, or P4SMA16H equivalent, key selection criteria include unidirectional polarity, 12.9 V maximum reverse stand-off voltage, 23.5 V clamping under 10/1000 μs surge, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and moisture sensitivity level 1 handling requirements.
Technical Context
The P4SMA16H operates as a unidirectional avalanche diode with glass-passivated junction, optimized for fast response (<1.0 ps) and low leakage (<1 µA at 12.9 V). It delivers 400 W peak pulse power per 10/1000 μs waveform and supports junction temperatures from –55 °C to +150 °C.
Its electrical behavior follows ANSI/IEEE C62.35 standards, with breakdown voltage tightly specified (14.4–17.6 V), temperature coefficient of VBR at 0.086 %/°C, and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements for the molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT=1 mA | 14.4–17.6 V - defines minimum and maximum avalanche initiation threshold under standardized test conditions |
| VWM | 12.9 V - maximum continuous reverse voltage before significant leakage begins; sets system operating margin |
| IPPM (10/1000 μs) | 17.8 A - peak surge current the device safely clamps without failure, enabling 400 W pulse handling |
| VC @ IPPM | 23.5 V - clamped voltage during full-rated surge; determines protected circuit's maximum transient exposure |
| IR @ VWM | <1 µA - ultra-low reverse leakage ensures minimal power loss and signal integrity in standby operation |
| TJ max | +150 °C - enables reliable operation in under-hood automotive and high-temperature industrial environments |
| Package | DO-214AC (SMA) - industry-standard SMD outline with matte tin-plated leads, compatible with automated reflow assembly |
Pinout & Package
DO-214AC (SMA) surface-mount package with cathode band marking for unidirectional polarity. Matte tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements. Weight: 0.060 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts during forward surge or bias |
| Cathode (marked band) | Avalanche clamping terminal | Connected to higher-potential side; initiates clamping when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics use with stress testing across temperature, humidity, and mechanical vibration profiles |
| Glass passivated junction | Enhances long-term reliability and stability of breakdown voltage under thermal cycling and humidity exposure |
| Clamping voltage ≤23.5 V @ 17.8 A | Ensures downstream ICs rated for ≤24 V logic or power rails remain within safe operating limits during transients |
| ISO 7637-2 Pulse 1/2a/2b/3a/3b compliant | Meets automotive OEM requirements for load dump, inductive switching, and supply interruption immunity |
| Moisture sensitivity level 1 | Permits unlimited floor life and standard SMT handling without dry-pack or baking preconditioning |
Applications
| Switching Mode Power Supply (SMPS) | On-board DC/DC Converter |
|---|---|
Use Scenario: Protects primary-side MOSFET gate drivers and secondary-side rectifiers from switching-induced voltage spikes and ESD events in AC/DC adapters and industrial SMPS units. IC Role / Device Role: Unidirectional TVS placed across input/output rails or across MOSFET drain-source to clamp inductive kickback and overshoot. Use Value: Limits transient excursions to ≤23.5 V, preventing latch-up or oxide breakdown in 24 V-rated controllers and synchronous rectifiers. | Use Scenario: Shields point-of-load (POL) converters in automotive ADAS ECUs and infotainment modules from battery line transients during cold-crank or load-dump events. IC Role / Device Role: Mounted at DC/DC input filter stage to absorb ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 3b (capacitive coupling) energy. Use Value: Withstands 400 W peak pulses while maintaining <1 µA leakage at 12.9 V, preserving efficiency in always-on 5 V/3.3 V rail generation. |
| Lighting Application | Automotive Body Control Module (BCM) |
Use Scenario: Safeguards LED driver ICs and current-sense amplifiers in commercial LED streetlights exposed to lightning-induced surges on long outdoor wiring runs. IC Role / Device Role: Placed across constant-current output terminals to clamp line-to-line and line-to-ground transients up to 400 W. Use Value: Fast <1.0 ps response ensures clamping before LED string overvoltage damages bond wires or phosphor layers. | Use Scenario: Integrated into window lift, mirror fold, and seat position control circuits where brushed motor commutation generates repetitive 100–500 V spikes. IC Role / Device Role: Connected between motor drive H-bridge outputs and ground to suppress bidirectional inductive flyback (when used with external bridge diodes). Use Value: AEC-Q101 qualification and –55 °C to +150 °C operation ensure robustness across vehicle lifetime and environmental extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16A | 600 W rating, DO-214AA (SMB) package, 16 V nominal VBR, bidirectional variant available | Higher power handling but larger footprint; requires PCB layout change due to wider body and different pad spacing | Select SMBJ16A only if system-level surge requirements exceed 400 W or DO-214AA is already standardized in design |
| 1.5SMC16A | 1500 W rating, DO-214AB (SMC) package, 16 V nominal VBR, higher IPPM (122 A) | Designed for heavy-duty industrial mains input stages; overqualified for low-power DC/DC or signal-line protection | Choose 1.5SMC16A only when protecting high-energy bus lines (e.g., 24 V chassis systems) where 400 W is insufficient |
Compared with SMBJ16A and 1.5SMC16A, the P4SMA16H provides optimal balance of compact DO-214AC footprint, AEC-Q101 qualification, and precise 400 W clamping for space-constrained automotive and industrial DC/DC applications-without over-engineering size or cost.
Availability
P4SMA16H is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, and automotive lighting applications requiring stable component supply, AEC-Q101 compliance, and RoHS/halogen-free manufacturing.
Supply support for P4SMA16H 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, MOSFETs, and automotive-qualified components.
The P4SMA series belongs to TSC's AEC-Q101-qualified surface-mount TVS portfolio, engineered specifically for automotive and industrial transient suppression where reliability, fast response, and standardized SMA packaging are critical.
FAQ
What is the polarity configuration of the P4SMA16H?
The P4SMA16H is a unidirectional TVS diode, with cathode indicated by a band on the DO-214AC (SMA) package. It conducts in forward bias and clamps transients in reverse bias above its breakdown voltage. This configuration matches standard DC rail protection where polarity is fixed, unlike bidirectional variants such as P4SMA16AH which suppress surges in both directions.
Does the P4SMA16H meet automotive qualification standards?
Yes, the P4SMA16H is AEC-Q101 qualified and meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements for automotive electronic modules. Its construction-including glass-passivated junction, JESD201 Class 2 whisker resistance, and moisture sensitivity level 1-supports deployment in engine control units, body control modules, and ADAS subsystems per OEM specifications.
What is the maximum clamping voltage of the P4SMA16H under surge conditions?
The P4SMA16H has a maximum clamping voltage (VC) of 23.5 V when subjected to its rated 10/1000 μs peak pulse current of 17.8 A. This value is measured per ANSI/IEEE C62.35 and guarantees that protected circuitry downstream will not experience voltages exceeding 23.5 V during standardized surge events, making it suitable for safeguarding 24 V nominal systems.
Can the P4SMA16H be used in bidirectional surge protection applications?
No-the P4SMA16H is unidirectional and not rated for symmetrical bidirectional clamping. For bidirectional protection, engineers must select the P4SMA16AH variant, which features identical voltage ratings but symmetric breakdown in both polarities. Using P4SMA16H in reverse-biased AC or floating signal paths may result in unintended conduction or inadequate protection.
What is the lead finish and solderability specification for the P4SMA16H?
The P4SMA16H features matte tin-plated leads compliant with J-STD-002 for solderability and JESD201 Class 2 for whisker resistance. Its DO-214AC (SMA) package supports standard lead-free reflow profiles, including peak temperatures up to 260 °C, and has moisture sensitivity level 1-eliminating bake requirements prior to assembly.
P4SMA16H 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:
- 1
- Bidirectional Channels:
- -
- 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)
P4SMA16H FAQ
1.How can I place an order for P4SMA16H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA16H 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 P4SMA16H reliable?
The price and inventory of P4SMA16H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA16H is usually 5 days.
3.What payment methods are accepted for P4SMA16H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA16H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA16H?
P4SMA16H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA16H 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 P4SMA16H?
For technical support, including P4SMA16H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA16H requirements.
6.How does Aetrix verify that P4SMA16H is sourced from the original manufacturer or authorized distributors?
All P4SMA16H 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 P4SMA16H meets industry standards.
7.What is the process for return or replacement of P4SMA16H?
All P4SMA16H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA16H, 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 P4SMA16H part is unused and in its original packaging.
Return procedure for P4SMA16H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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