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Taiwan Semiconductor Corporation P4SMA9.1C
- Part No.:
- P4SMA9.1C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA9.1C.pdf
- Description:
- 400W, 9.1V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:4,477
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Product details
Overview
P4SMA9.1C from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for robust ESD and surge protection in DC power rails and signal lines. It features a 9.1V nominal breakdown voltage (VBR = 8.19–10.0 V @ 1.0 mA), 7.37 V working stand-off voltage (VWM), 13.8 V maximum clamping voltage (VC @ 30.0 A), 400 W peak pulse power (10/1000 µs), and <1 µA reverse leakage at VWM, deployed in automotive-grade SMPS input stages.
For engineers reviewing the P4SMA9.1C datasheet, P4SMA9.1C pinout, P4SMA9.1C application, or P4SMA9.1C equivalent, key selection criteria include bidirectional clamping capability, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, DO-214AC mechanical compatibility, and verified clamping performance under 30 A 10/1000 µs surge conditions.
Technical Context
The P4SMA9.1C implements a glass-passivated silicon junction optimized for fast transient suppression with sub-1 ps response time. Its bidirectional configuration enables symmetric clamping in AC-coupled or floating circuits without polarity constraints, supporting both line-to-line and line-to-ground protection topologies.
Rated for -55°C to +150°C operating junction temperature and moisture sensitivity level 1 (J-STD-020), it sustains 400 W non-repetitive peak pulse power per 10/1000 µs waveform while maintaining ≤1 µA leakage above 10 V - critical for low-power sensor and microcontroller I/O rail protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 8.19–10.0 V @ 1.0 mA - defines reliable conduction onset across process variation and temperature |
| VWM | 7.37 V - maximum continuous DC or RMS voltage before significant leakage begins |
| VC @ IPPM | 13.8 V @ 30.0 A - peak clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 400 W - surge energy handling capacity under standardized 10/1000 µs waveform |
| IR @ VWM | <50 µA - ensures minimal standby current draw in battery-powered systems |
| TJ max | +150 °C - supports operation in high-temperature engine bay or enclosed power supply environments |
Pinout & Package
DO-214AC (SMA) surface-mount package with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance; UL 94V-0 molding compound; 0.060 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Transient return path (bidirectional) | Completes clamping loop during positive or negative transients; no fixed polarity |
| Cathode (banded end) | Transient return path (bidirectional) | Functions identically to anode under reverse surge; marking denotes orientation only |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals or floating buses without external polarity management |
| ISO 7637-2 compliance | Validated against automotive electrical disturbance pulses 1, 2a, 2b, 3a, and 3b for OEM qualification |
| Glass passivated junction | Ensures stable VBR and low leakage over lifetime and thermal cycling |
| Fast response time | <1.0 ps - initiates clamping before most IC damage thresholds are exceeded |
Applications
| Automotive Infotainment Power Input | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: 12 V battery-fed USB hub or display controller in vehicle cabin exposed to load dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed at DC input filter stage to clamp surges before LDOs and USB PHYs. Use Value: Limits voltage to ≤13.8 V during 30 A 10/1000 µs events, preventing latch-up in 5 V logic rails and preserving USB enumeration integrity. | Use Scenario: 24 V digital input module receiving signals from field sensors subject to inductive switching noise. IC Role / Device Role / Timing Role: Primary surge shunt on each channel's input trace, paired with series resistor and optocoupler. Use Value: Clamps transients within 1 ps while drawing <50 µA at 24 V nominal, avoiding false triggering and enabling direct MCU GPIO interfacing. |
| LED Driver Secondary-Side Output | Smart Meter Communication Port |
Use Scenario: Constant-current LED driver output feeding streetlight strings where cable runs induce lightning-induced surges. IC Role / Device Role / Timing Role: Final-stage protection on low-impedance output node, placed after output capacitor and before connector. Use Value: Withstands 400 W pulses without degradation, maintaining 7.37 V stand-off to avoid interference with 9–12 V LED forward voltage range. | Use Scenario: RS-485 port on utility meter exposed to EFT bursts and induced surges on long data cables. IC Role / Device Role / Timing Role: Common-mode TVS across differential pair, referenced to ground, complementing common-mode chokes. Use Value: Symmetric 13.8 V clamping prevents receiver saturation while meeting IEC 61000-4-4 Level 4 immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0CA | 600 W rating, DO-214AA (SMB) package, VC = 14.4 V @ 42.1 A | Higher power handling but larger footprint; requires PCB layout revision | Select when surge currents exceed 30 A or system-level testing demands >400 W margin |
| 1.5SMC9.0CA | 1500 W rating, DO-214AB (SMC) package, VC = 14.4 V @ 104 A | Designed for primary-side AC input or high-energy industrial transients | Choose for front-end AC/DC converter inputs where IEC 61000-4-5 Level 3/4 compliance is required |
Compared with SMBJ9.0CA and 1.5SMC9.0CA, the P4SMA9.1C delivers optimal space-constrained protection at 400 W with DO-214AC footprint - ideal for secondary-side DC rails where board area and thermal mass are limited, without over-engineering for higher-power threats.
Availability
P4SMA9.1C is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial PLC I/O modules, and LED driver outputs requiring stable component supply and full ISO 7637-2 qualification.
Supply support for P4SMA9.1C 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, serving global automotive, industrial, and consumer markets since 1979.
The P4SMA9.1C belongs to TSC's P4SMAx bidirectional TVS family, engineered specifically for AEC-Q200-aligned surge protection in compact surface-mount power and signal interfaces.
FAQ
What does the 'C' suffix indicate in P4SMA9.1C?
The 'C' suffix in P4SMA9.1C denotes bidirectional configuration - meaning the device provides symmetrical clamping for both positive and negative transients without polarity dependence. This distinguishes it from unidirectional variants like P4SMA9.1, which require correct anode/cathode orientation. The P4SMA9.1C is functionally identical to P4SMA9.1A in electrical specs but differs in conduction symmetry, making it suitable for AC-coupled or floating bus protection where polarity is undefined.
Does P4SMA9.1C meet automotive surge immunity standards?
Yes, P4SMA9.1C meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements for transient immunity in 12 V automotive systems. Its 400 W peak pulse power rating, 13.8 V clamping voltage at 30 A, and -55°C to +150°C operating range align with OEM-level protection needs for infotainment, body control, and lighting modules. Test reports per ISO 7637-2 are available upon request for P4SMA9.1C.
What is the maximum clamping voltage of P4SMA9.1C under surge conditions?
The maximum clamping voltage of P4SMA9.1C is 13.8 V when subjected to its rated 30.0 A peak impulse current (IPPM) using the standard 10/1000 µs waveform. This value is guaranteed across temperature and process variation and represents the highest voltage seen downstream during worst-case surge events - critical for ensuring connected ICs remain within absolute maximum ratings. The P4SMA9.1C maintains this clamping performance with <50 µA leakage at 7.37 V stand-off.
Can P4SMA9.1C replace P4SMA9.1A in existing designs?
No - P4SMA9.1C and P4SMA9.1A are not interchangeable without circuit review. While both share identical VBR (8.65–9.55 V), VWM (7.78 V), and VC (13.4 V), P4SMA9.1C is bidirectional and P4SMA9.1A is unidirectional. Substituting P4SMA9.1C for P4SMA9.1A in a polarity-sensitive location (e.g., DC rail with defined ground reference) may cause unintended conduction. Always verify schematic topology before replacement. The P4SMA9.1C must be used only where bidirectional clamping is intended.
Is P4SMA9.1C RoHS and halogen-free compliant?
Yes, P4SMA9.1C is RoHS compliant and halogen-free per IEC 61249-2-21. The device uses matte tin-plated leads and UL 94V-0 compliant molding compound, with no brominated flame retardants or chlorine-based additives. Moisture sensitivity level is rated at Level 1 (J-STD-020), allowing unlimited floor life at ambient conditions - simplifying SMT assembly logistics without baking requirements. This compliance applies to all production lots of P4SMA9.1C.
P4SMA9.1C 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):
- 7.37V
- Voltage - Breakdown (Min):
- 8.19V
- Voltage - Clamping (Max) @ Ipp:
- 13.8V
- Current - Peak Pulse (10/1000µs):
- 30A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA9.1C FAQ
1.How can I place an order for P4SMA9.1C through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA9.1C 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 P4SMA9.1C reliable?
The price and inventory of P4SMA9.1C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA9.1C is usually 5 days.
3.What payment methods are accepted for P4SMA9.1C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA9.1C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA9.1C?
P4SMA9.1C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA9.1C 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 P4SMA9.1C?
For technical support, including P4SMA9.1C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA9.1C requirements.
6.How does Aetrix verify that P4SMA9.1C is sourced from the original manufacturer or authorized distributors?
All P4SMA9.1C 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 P4SMA9.1C meets industry standards.
7.What is the process for return or replacement of P4SMA9.1C?
All P4SMA9.1C units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA9.1C, 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 P4SMA9.1C part is unused and in its original packaging.
Return procedure for P4SMA9.1C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA9.1C Tags
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