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Taiwan Semiconductor Corporation P4SMA16CAH
- Part No.:
- P4SMA16CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA16CAH.pdf
- Description:
- TVS DIODE 13.6VWM 22.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,792
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Product details
Overview
P4SMA16CAH from Taiwan Semiconductor is a bidirectional 400W surface-mount transient voltage suppressor (TVS) diode with a working stand-off voltage of 13.6V, breakdown voltage range of 15.2–16.8V at 1mA test current, and clamping voltage of 22.5V at 18.6A peak impulse current. It protects DC/DC converters and automotive power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the P4SMA16CAH datasheet, P4SMA16CAH pinout, P4SMA16CAH application, or P4SMA16CAH equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification, DO-214AC package compatibility, and sub-1ps response time under fast-rising ESD/surge events.
Technical Context
P4SMA16CAH is a glass-passivated, single-die, bidirectional TVS diode designed for unidirectional or bidirectional surge suppression in automotive and industrial power systems. Its junction operates from −55°C to +150°C, with <1μA reverse leakage at 13.6V and a temperature coefficient of VBR at 0.086%/°C.
The device meets ISO 7637-2 Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnect/relay bounce), and Pulse 3a/3b (capacitive coupling) waveforms. It delivers 400W peak pulse power (10/1000μs) with clamping voltage tightly controlled at 22.5V under 18.6A surge current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13.6 V - Maximum continuous reverse operating voltage before significant leakage begins |
| VBR min/max | 15.2 V / 16.8 V @ 1 mA - Confirmed breakdown threshold range for reliable turn-on during transients |
| VC@IPPM | 22.5 V @ 18.6 A - Clamping voltage limiting downstream circuit stress during 10/1000μs surge |
| PPPM | 400 W - Peak pulse power handling per single non-repetitive 10/1000μs event |
| IR@VWM | <1 μA - Ultra-low leakage ensuring minimal standby power loss in always-on systems |
| TJ max | +150 °C - Junction temperature rating enabling use in under-hood automotive environments |
| Response time | <1.0 ps - Sub-picosecond junction response ensures protection before transient energy couples into ICs |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, molded plastic case with matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance. Polarity indicated by cathode band; bidirectional operation requires no polarity orientation during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Transient conduction path | Both terminals function identically - symmetric clamping in either polarity eliminates orientation dependency |
| Case (body) | Thermal and mechanical interface | DO-214AC body provides thermal path to PCB copper and mechanical stability for automated reflow |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Glass passivated junction | Enhanced moisture resistance and long-term stability vs. epoxy-passivated alternatives |
| ISO 7637-2 compliance | Guaranteed suppression of standardized automotive load-dump and coupling transients without external circuitry |
| Moisture sensitivity level 1 | No dry-pack or baking required prior to SMT assembly - supports standard J-STD-020 flow |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS directives for environmentally constrained applications |
Applications
| Automotive On-Board DC/DC Converter | Industrial SMPS Input Stage |
|---|---|
Use Scenario: Protecting 12V-to-5V/3.3V buck converter inputs in vehicle infotainment ECUs exposed to battery line transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input rail to clamp ISO 7637-2 Pulse 1 (−100V/0.5Ω) and Pulse 2b (−100V/50Ω) events. Use Value: Limits voltage seen by controller IC to ≤22.5V, preventing latch-up or gate oxide damage during cold-crank or load-dump conditions. | Use Scenario: Safeguarding primary-side rectifier outputs in 24V industrial switch-mode power supplies subject to lightning-induced surges. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing 400W 10/1000μs pulses on bulk capacitor input node. Use Value: Maintains system uptime by preventing overvoltage shutdown or MOSFET avalanche failure during repetitive surge events. |
| LED Driver Power Input | Automotive Lighting Module |
Use Scenario: Input protection for constant-current LED drivers in streetlight or signage applications with long cable runs. IC Role / Device Role / Timing Role: Fast-clamping TVS suppressing induced surges from nearby motor switching or EFT bursts. Use Value: Enables >100k-cycle surge endurance without degradation, verified per IEC 61000-4-5 Level 4 testing. | Use Scenario: Transient suppression on headlamp or tail lamp control board power lines in vehicles meeting UNECE R128 requirements. IC Role / Device Role / Timing Role: AEC-Q101-compliant bidirectional TVS protecting LIN bus power and LED driver ICs from battery reversal and jump-start spikes. Use Value: Eliminates need for separate unidirectional and bidirectional devices-single P4SMA16CAH covers both polarities with identical clamping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16CA | 600W rating, SMB package (larger footprint), higher IPPM (32.4A), same VC (26.0V) | Higher power margin but requires PCB area increase; less suitable for ultra-dense layouts | Select when surge duty cycle exceeds single-event limits of P4SMA16CAH or when thermal mass demands larger package |
| 1.5SMC16CA | 1500W rating, SMC package (3.5mm × 7.2mm), VC = 26.0V @ 58.3A, higher leakage (≤5μA) | Designed for high-energy industrial surges; not AEC-Q101 qualified | Prefer for non-automotive 48V systems where cost-per-watt and ruggedness outweigh space constraints |
Compared with SMBJ16CA and 1.5SMC16CA, P4SMA16CAH offers optimal balance of AEC-Q101 compliance, DO-214AC footprint efficiency, and precise 22.5V clamping-critical for protecting low-voltage automotive MCUs without overdesigning board space or thermal budget.
Availability
P4SMA16CAH is available at Aetrix Electronics and suitable for automotive lighting modules, on-board DC/DC converters, and industrial SMPS requiring stable component supply with full traceability and lifecycle management.
Supply support for P4SMA16CAH 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.
P4SMA16CAH belongs to TSC's AEC-Q101-qualified P4SMAx(A)H series-engineered specifically for compact, high-reliability transient suppression in space-constrained automotive power domains.
FAQ
What does the "CAH" suffix indicate in P4SMA16CAH?
The "CAH" suffix denotes a bidirectional configuration with tightened breakdown voltage tolerance (±5% for P4SMA16AH variants) and AEC-Q101 qualification. Unlike unidirectional "H" versions, P4SMA16CAH provides symmetrical clamping in both polarities-essential for protecting circuits vulnerable to reverse battery connection or bipolar transients without polarity-sensitive layout.
Is P4SMA16CAH suitable for ISO 7637-2 Pulse 1 compliance testing?
Yes, P4SMA16CAH is explicitly rated to meet ISO 7637-2 Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnection), and Pulse 3a/3b (capacitive coupling) waveforms. Its 22.5V clamping voltage at 18.6A and 400W peak power ensure downstream components remain within safe operating area during standardized automotive transient tests.
How does the DO-214AC (SMA) package of P4SMA16CAH compare to SMB or SMC packages in thermal performance?
P4SMA16CAH's DO-214AC package delivers 400W peak pulse power with lower thermal mass than SMB or SMC variants. While SMBJ16CA (SMB) achieves 600W and 1.5SMC16CA (SMC) reaches 1500W, the SMA footprint enables tighter routing and faster reflow profiling-making P4SMA16CAH ideal where board space is constrained but 400W surge capacity suffices.
Does P4SMA16CAH require special handling for moisture sensitivity?
No-P4SMA16CAH is rated Moisture Sensitivity Level 1 per J-STD-020, meaning it can be stored indefinitely at ambient conditions and processed directly through standard SMT reflow without baking or dry-pack requirements. This simplifies manufacturing logistics and reduces assembly risk in high-volume automotive production.
Can P4SMA16CAH replace unidirectional TVS diodes in existing designs?
P4SMA16CAH can replace unidirectional variants only if bidirectional clamping is acceptable and the circuit lacks polarity-dependent components (e.g., electrolytic capacitors or diode-OR'd rails). Its symmetrical VBR and VC eliminate orientation concerns, but designers must verify that reverse-biased leakage and clamping behavior align with system-level fault tolerance requirements for P4SMA16CAH.
P4SMA16CAH 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):
- 13.6V
- Voltage - Breakdown (Min):
- 15.2V
- Voltage - Clamping (Max) @ Ipp:
- 22.5V
- Current - Peak Pulse (10/1000µs):
- 18.6A
- 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)
P4SMA16CAH FAQ
1.How can I place an order for P4SMA16CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA16CAH 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 P4SMA16CAH reliable?
The price and inventory of P4SMA16CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA16CAH is usually 5 days.
3.What payment methods are accepted for P4SMA16CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA16CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA16CAH?
P4SMA16CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA16CAH 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 P4SMA16CAH?
For technical support, including P4SMA16CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA16CAH requirements.
6.How does Aetrix verify that P4SMA16CAH is sourced from the original manufacturer or authorized distributors?
All P4SMA16CAH 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 P4SMA16CAH meets industry standards.
7.What is the process for return or replacement of P4SMA16CAH?
All P4SMA16CAH units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA16CAH, 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 P4SMA16CAH part is unused and in its original packaging.
Return procedure for P4SMA16CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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