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Taiwan Semiconductor Corporation P4SMA150CAH
- Part No.:
- P4SMA150CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA150CAH.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,480
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Product details
Overview
P4SMA150CAH from Taiwan Semiconductor is a bidirectional 400W surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, with a working stand-off voltage of 128 V, breakdown voltage range 143–158 V at 1 mA, clamping voltage of 207 V at 2.0 A (10/1000 µs), and AEC-Q101 qualification for automotive-grade surge protection in DC/DC converters.
For engineers reviewing the P4SMA150CAH datasheet, P4SMA150CAH pinout, P4SMA150CAH application, or P4SMA150CAH equivalent, this page delivers verified electrical specs, bidirectional TVS behavior, ISO 7637-2 pulse compliance, moisture sensitivity level 1, and direct replacement guidance for automotive power rail protection design.
Technical Context
The P4SMA150CAH is a bipolar (bidirectional) TVS diode designed to protect sensitive electronics against fast transient overvoltages such as ESD, load dump, and inductive switching spikes. Its glass-passivated junction ensures stable clamping performance and low leakage (<1 µA at 128 V).
It operates across –55°C to +150°C junction temperature range, meets ISO 7637-2 Pulse 1/2a/2b/3a/3b immunity requirements, and features <1.0 ps response time - enabling effective suppression of sub-nanosecond transients in automotive and industrial power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 128 V - Maximum continuous reverse operating voltage before significant leakage begins; defines safe DC bias margin. |
| VBR min/max | 143–158 V @ 1 mA - Breakdown voltage range confirming reliable turn-on threshold under standardized test conditions. |
| VC | 207 V @ 2.0 A (10/1000 µs) - Clamping voltage limiting peak stress on downstream circuitry during surge events. |
| PPPM | 400 W - Peak pulse power handling capability per single 10/1000 µs waveform, derated above 25°C ambient. |
| IR | <1 µA @ 128 V - Ultra-low reverse leakage ensuring minimal standby power loss and signal integrity in high-impedance nodes. |
| TJ max | +150 °C - Maximum junction temperature enabling operation in under-hood automotive environments and thermally constrained PCB layouts. |
Pinout & Package
DO-214AC (SMA) surface-mount package with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability; weight ≈ 0.060 g; UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Transient current entry point in negative polarity events | Bidirectional conduction allows symmetric clamping for both positive and negative transients without polarity dependency. |
| Cathode (banded end) | Transient current entry point in positive polarity events | Marking enables correct orientation during automated placement; critical for unidirectional variants but functionally redundant in CAH-type bidirectional configuration. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS power supplies. |
| ISO 7637-2 compliance | Withstands defined load-dump (Pulse 5a/b) and coupled transient pulses (Pulse 1, 2a, 2b, 3a, 3b) without degradation. |
| Fast response time | <1.0 ps - Enables clamping before transient energy couples into protected ICs or MOSFET gates. |
| Moisture sensitivity level 1 | No floor life limitation or bake requirement prior to reflow; supports standard SMT assembly without special handling. |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive - suitable for green manufacturing and export-regulated markets. |
Applications
| Automotive Body Control Module (BCM) | On-board DC/DC Converter |
|---|---|
Use Scenario: Protects LIN bus transceivers and microcontroller I/O from battery line transients during ignition cycling and load dump. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector interface to shunt surge current away from signal conditioning circuitry. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 2b (battery interruption) and Pulse 3b (capacitive coupling), preventing latch-up or permanent damage to 3.3 V/5 V logic. | Use Scenario: Shields primary-side gate drivers and secondary-side feedback optocouplers in 12 V-to-5 V/3.3 V isolated DC/DC modules. IC Role / Device Role / Timing Role: Fast-response voltage clamp on input and output rails to limit transient overshoot during MOSFET switching transitions and fault recovery. Use Value: Limits clamped voltage to 207 V while absorbing 400 W peak power, preserving isolation barrier integrity and preventing secondary-side regulator failure. |
| LED Headlamp Driver | Industrial PLC Power Input |
Use Scenario: Guards constant-current LED driver ICs against inductive kickback from relay-controlled headlamp loads and alternator ripple. IC Role / Device Role / Timing Role: Primary overvoltage protection device mounted adjacent to input filter capacitor on 12 V/24 V supply rail. Use Value: Withstands repetitive 10/1000 µs surges up to 2.0 A without parameter shift, ensuring long-term reliability in cyclic thermal environments. | Use Scenario: Secures 24 V DC input stage of programmable logic controllers exposed to factory floor wiring transients and motor drive noise. IC Role / Device Role / Timing Role: Front-end transient suppressor placed before bulk capacitance and upstream of DC-DC converter input stage. Use Value: Provides 400 W surge rating with ≤1 µA leakage at 128 V, minimizing standby current draw while meeting IEC 61000-4-4 Level 4 immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA | 600 W peak power, SMB package (larger footprint), same VWM/VC ratings | Better suited for higher-energy surges; requires PCB area increase and may not fit space-constrained automotive modules | Select when system-level testing reveals insufficient margin with 400 W rating; verify thermal relief and pad layout compatibility. |
| 1.5SMC150CA | 1500 W peak power, SMC package (3.94 mm × 2.69 mm), higher VC = 243 V | Used in industrial mains-input protection where higher clamping voltage is acceptable for robustness trade-off | Choose only if clamping voltage margin permits 243 V and board space allows larger SMC footprint; not drop-in compatible. |
Compared with SMBJ150CA and 1.5SMC150CA, the P4SMA150CAH offers optimal balance of compact DO-214AC size, AEC-Q101 qualification, and 400 W surge capacity - making it preferred for space-limited, automotive-qualified DC/DC and BCM designs where strict VC limits apply.
Availability
P4SMA150CAH is available at Aetrix Electronics and suitable for automotive body electronics, industrial DC/DC converters, LED lighting drivers, and PLC power inputs requiring stable component supply with full traceability and lifecycle management.
Supply support for P4SMA150CAH 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 automotive-qualified components since 1979.
The P4SMA150CAH belongs to TSC's AEC-Q101-qualified P4SMAx(A)H series - engineered specifically for robust transient suppression in automotive power distribution networks and industrial power supply interfaces.
FAQ
What does the "CAH" suffix indicate in P4SMA150CAH?
The "CAH" suffix denotes a bidirectional configuration with AEC-Q101 qualification and halogen-free construction. Unlike unidirectional "H" variants, P4SMA150CAH provides symmetrical clamping for both positive and negative transients - essential for protecting AC-coupled or floating-rail circuits. This matches the exact marking code RKJ and electrical behavior documented in TSC's official datasheet revision A2102.
Does P4SMA150CAH meet ISO 7637-2 Pulse 5 (load dump) requirements?
No - P4SMA150CAH is rated for ISO 7637-2 Pulses 1, 2a, 2b, 3a, and 3b only. It is not designed to withstand the high-energy, long-duration Pulse 5 (load dump) event, which typically requires higher-power TVS devices like SMAJ150A or specialized load-dump suppressors. System-level protection for Pulse 5 must include additional front-end components beyond the P4SMA150CAH.
What is the maximum clamping voltage of P4SMA150CAH under standard test conditions?
The maximum clamping voltage of P4SMA150CAH is 207 V, measured at a peak pulse current of 2.0 A using the 10/1000 µs waveform per IEC 61000-4-5. This value is guaranteed across the full operating temperature range and forms the basis for downstream component voltage derating - for example, selecting 250 V-rated capacitors or 200 V MOSFETs in the protected circuit.
Can P4SMA150CAH be used in place of unidirectional P4SMA150AH?
No - P4SMA150CAH is bidirectional and electrically distinct from unidirectional P4SMA150AH. While both share identical VWM (128 V) and VC (207 V vs. 215 V), their polarity behavior differs: P4SMA150AH conducts only during positive transients, whereas P4SMA150CAH clamps in both directions. Substitution requires verifying circuit topology - e.g., replacing P4SMA150AH on a DC rail with P4SMA150CAH may cause unintended conduction during normal reverse-bias operation.
Is P4SMA150CAH compatible with lead-free reflow soldering processes?
Yes - P4SMA150CAH uses matte tin-plated leads compliant with J-STD-002 and supports standard lead-free reflow profiles (peak temperature ≤260°C). Its DO-214AC package has moisture sensitivity level 1 (MSL-1), meaning no baking is required prior to assembly, and it withstands multiple reflow cycles without degradation to clamping performance or leakage characteristics.
P4SMA150CAH 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):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 2A
- 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)
P4SMA150CAH FAQ
1.How can I place an order for P4SMA150CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA150CAH 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 P4SMA150CAH reliable?
The price and inventory of P4SMA150CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA150CAH is usually 5 days.
3.What payment methods are accepted for P4SMA150CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA150CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA150CAH?
P4SMA150CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA150CAH 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 P4SMA150CAH?
For technical support, including P4SMA150CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA150CAH requirements.
6.How does Aetrix verify that P4SMA150CAH is sourced from the original manufacturer or authorized distributors?
All P4SMA150CAH 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 P4SMA150CAH meets industry standards.
7.What is the process for return or replacement of P4SMA150CAH?
All P4SMA150CAH units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA150CAH, 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 P4SMA150CAH part is unused and in its original packaging.
Return procedure for P4SMA150CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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