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Taiwan Semiconductor Corporation P4SMA47CH
- Part No.:
- P4SMA47CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA47CH.pdf
- Description:
- 400W, 47V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:4,552
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Product details
Overview
P4SMA47CH from Taiwan Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in DO-214AC (SMA) package, rated for 400W peak pulse power, 47V breakdown voltage (min 42.3V, max 51.7V), and clamping voltage of 67.8V at 6.2A (10/1000μs waveform). It operates from −55°C to +150°C and meets AEC-Q101 qualification for automotive-grade surge protection.
For engineers reviewing the P4SMA47CH datasheet, P4SMA47CH pinout, P4SMA47CH application, or P4SMA47CH equivalent, this device is selected for robust ESD and surge immunity in DC/DC converters, lighting drivers, and automotive power modules where bidirectional clamping, low leakage (<1μA at 40.2V), and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance are required.
Technical Context
The P4SMA47CH is a unidirectional/bidirectional TVS diode - the "CH" suffix denotes bidirectional configuration per manufacturer's ordering guide. Its glass-passivated junction enables fast response (<1.0ps) and stable clamping under repetitive transients. Electrical characteristics apply identically in both directions, with VBR tested at 1.0mA and VC measured at IPPM = 6.2A using standardized 10/1000μs waveform.
It features a working stand-off voltage (VWM) of 38.1V, reverse leakage current <1μA at VWM, and temperature coefficient of VBR at 0.101%/°C. The device is rated for 40A non-repetitive forward surge (IFSM) and complies with JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1.0mA | 42.3V min / 51.7V max - defines reliable conduction onset during overvoltage events |
| VWM | 38.1V - maximum continuous reverse operating voltage before leakage exceeds 1μA |
| VC @ IPPM = 6.2A | 67.8V - clamped voltage seen by protected circuit during 400W transient (10/1000μs) |
| PPPM | 400W - peak pulse power handling capacity under standard surge waveform |
| IR @ VWM | <1μA - ensures minimal standby power loss and signal integrity in high-impedance nodes |
| TJ Range | −55°C to +150°C - supports operation in under-hood automotive and industrial environments |
| Package | DO-214AC (SMA) - industry-standard SMD outline with 0.060g mass and UL 94V-0 molding |
Pinout & Package
DO-214AC (SMA) package: surface-mount, molded plastic case with cathode band marking; polarity is symmetric for bidirectional operation - no anode/cathode distinction; terminals are matte tin-plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient terminal | Both ends function identically - connects across protected line (e.g., CAN_H–CAN_L or supply–return) without orientation dependency |
| Case | Non-electrical mechanical interface | No internal connection; serves only as thermal path and mounting structure |
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 | Enables stable VBR tolerance and long-term reliability under humidity and thermal cycling |
| Fast response time <1.0ps | Clamps ESD and lightning-induced transients before downstream ICs experience damage |
| Meets ISO 7637-2 Pulse 1/2a/2b/3a/3b | Designed to suppress load-dump, inductive switching, and battery disconnect transients in 12V/24V vehicle systems |
| Halogen-free & RoHS compliant | Complies with IEC 61249-2-21 and EU Directive 2011/65/EU for environmentally constrained applications |
Applications
| Automotive Body Control Module (BCM) | Industrial LED Driver Input Stage |
|---|---|
Use Scenario: Protecting LIN bus lines and sensor inputs against load dump and ESD in door module ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across LIN signal pair to limit voltage excursions to safe levels during transients. Use Value: Prevents latch-up or permanent damage to LIN transceivers (e.g., TJA1020) while maintaining signal integrity below 38.1V normal operation. | Use Scenario: Safeguarding constant-current LED driver IC inputs from surges induced by AC line switching or nearby relay actuation. IC Role / Device Role / Timing Role: Parallel-connected TVS on input rails to absorb 400W pulses without affecting steady-state regulation. Use Value: Enables use of cost-effective buck controllers (e.g., LM3409) without additional RC snubbers or derating due to clamping at 67.8V. |
| On-board DC/DC Converter (12V→5V) | Smart Lighting Ballast Interface |
Use Scenario: Input-side surge suppression for automotive-grade buck converter powering infotainment USB ports. IC Role / Device Role / Timing Role: Primary transient shunt located upstream of input capacitor and controller IC (e.g., MPQ4420A). Use Value: Ensures converter survives ISO 7637-2 Pulse 5a (load dump) up to 35V with no output dropout or reset event. | Use Scenario: Protection of DALI or 0–10V dimming interface lines in commercial LED luminaires exposed to building-wide surges. IC Role / Device Role / Timing Role: Bidirectional clamp bridging control line and reference ground to suppress common-mode transients. Use Value: Maintains dimming accuracy and prevents false commands during 1kV/0.5J surges per IEC 61000-4-5 Level 3. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ47CA | 600W rating, SMB package (larger footprint), VC = 77.0V @ 7.8A | Higher power margin but requires PCB area increase; less suitable for space-constrained automotive modules | Select when system-level surge energy exceeds 400W or layout allows SMB footprint |
| 1.5KE47CA | Through-hole TO-204AA (DO-41), 1500W rating, VC = 77.0V @ 19.3A | Not SMT-compatible; used in legacy industrial power supplies where manual assembly is acceptable | Choose only for prototyping or repair of existing through-hole designs - not for new SMT production |
Compared with SMBJ47CA and 1.5KE47CA, the P4SMA47CH offers optimal balance of 400W capability, DO-214AC compactness, and AEC-Q101 qualification - making it preferred for volume automotive and space-limited industrial DC/DC front-ends.
Availability
P4SMA47CH is available at Aetrix Electronics and suitable for automotive body electronics, industrial LED drivers, on-board DC/DC converters, and smart lighting interfaces requiring stable component supply across extended temperature ranges and high-reliability surge immunity.
Supply support for P4SMA47CH 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 transient suppression portfolio, engineered specifically for automotive and industrial power rail protection where bidirectional clamping, low leakage, and ISO 7637-2 compliance are mandatory.
FAQ
What does the "CH" suffix indicate in P4SMA47CH?
The "CH" suffix in P4SMA47CH designates a bidirectional configuration - meaning the device functions identically in both polarities and is intended for differential or AC-coupled surge protection. This differs from "H"-suffix variants (e.g., P4SMA47H), which are unidirectional and require correct anode/cathode orientation. The P4SMA47CH has symmetric VBR, VWM, and VC values in either direction.
Is P4SMA47CH suitable for ISO 7637-2 compliance testing?
Yes, P4SMA47CH is explicitly rated to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b waveforms per manufacturer documentation. Its 400W peak pulse power, 67.8V clamping voltage at 6.2A, and −55°C to +150°C operating range make it appropriate for protecting 12V automotive subsystems such as body control modules and lighting drivers against conducted transients defined in that standard.
What is the maximum clamping voltage of P4SMA47CH under surge conditions?
The maximum clamping voltage (VC) of P4SMA47CH is 67.8V, measured at IPPM = 6.2A using the standardized 10/1000μs double-exponential surge waveform. This value represents the peak voltage imposed on the protected circuit during worst-case transient events and is critical for ensuring downstream ICs (e.g., microcontrollers or transceivers) remain within absolute maximum ratings.
Does P4SMA47CH have AEC-Q101 qualification?
Yes, P4SMA47CH is AEC-Q101 qualified per the manufacturer's datasheet (Version A2102). This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD (HBM ≥8kV, CDM ≥1kV), confirming suitability for automotive electronic systems where reliability under harsh environmental conditions is mandatory.
What is the leakage current specification for P4SMA47CH at its working voltage?
P4SMA47CH exhibits a maximum reverse leakage current (IR) of <1μA when biased at its working stand-off voltage (VWM) of 38.1V. This ultra-low leakage ensures minimal power loss in always-on circuits and preserves signal integrity in high-impedance sensing or communication lines - a key requirement in battery-powered and precision automotive subsystems.
P4SMA47CH 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):
- 38.1V
- Voltage - Breakdown (Min):
- 42.3V
- Voltage - Clamping (Max) @ Ipp:
- 67.8V
- Current - Peak Pulse (10/1000µs):
- 6.2A
- 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)
P4SMA47CH FAQ
1.How can I place an order for P4SMA47CH through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA47CH 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 P4SMA47CH reliable?
The price and inventory of P4SMA47CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA47CH is usually 5 days.
3.What payment methods are accepted for P4SMA47CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA47CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA47CH?
P4SMA47CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA47CH 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 P4SMA47CH?
For technical support, including P4SMA47CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA47CH requirements.
6.How does Aetrix verify that P4SMA47CH is sourced from the original manufacturer or authorized distributors?
All P4SMA47CH 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 P4SMA47CH meets industry standards.
7.What is the process for return or replacement of P4SMA47CH?
All P4SMA47CH units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA47CH, 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 P4SMA47CH part is unused and in its original packaging.
Return procedure for P4SMA47CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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