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Taiwan Semiconductor Corporation P4SMA11CAH
- Part No.:
- P4SMA11CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA11CAH.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,342
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Product details
Overview
P4SMA11CAH 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 9.40 V, breakdown voltage range 10.50–11.60 V at 1.0 mA test current, and clamping voltage of 15.6 V at 27.0 A peak impulse current (10/1000 µs). It is AEC-Q101 qualified and used for surge protection in automotive DC/DC converters.
For engineers reviewing the P4SMA11CAH datasheet, P4SMA11CAH pinout, P4SMA11CAH application, or P4SMA11CAH equivalent, key selection criteria include bidirectional clamping performance, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, moisture sensitivity level 1, and TJ = –55°C to +150°C operating range.
Technical Context
The P4SMA11CAH is a glass-passivated, bipolar junction TVS diode designed for fast transient suppression in automotive and industrial power rails. Its bidirectional configuration enables symmetrical clamping in AC-coupled or floating signal paths, and its <1.0 ps response time ensures protection against ESD and fast-rising surges.
It meets ISO 7637-2 requirements for automotive transients and operates across –55°C to +150°C junction temperature. With <1 µA reverse leakage at VWM and 0.075 %/°C VBR temperature coefficient, it delivers stable clamping under thermal stress and low-power standby conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.40 V - Maximum continuous reverse voltage before significant leakage; sets upper limit for safe operation in 12 V automotive systems. |
| VBR min/max | 10.50 / 11.60 V @ 1.0 mA - Confirmed breakdown window ensures predictable turn-on during transients without premature conduction. |
| VC @ IPPM | 15.6 V @ 27.0 A (10/1000 µs) - Clamping voltage defines worst-case overvoltage seen by protected ICs during surge events. |
| PPPM | 400 W - Peak pulse power rating determines survivability under standardized surge waveforms like ISO 7637-2 Pulse 5a. |
| IR @ VWM | <1 µA - Ultra-low leakage preserves battery life and avoids false triggering in high-impedance monitoring circuits. |
| TJ max | +150 °C - Enables reliable operation in under-hood automotive environments and thermally constrained PCB layouts. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, bidirectional, cathode band not applicable (symmetrical terminals).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Transient current path | Either terminal accepts surge current in either polarity; no polarity marking required for CAH suffix devices. |
| Case | Thermal mass / mechanical anchor | DO-214AC body provides thermal dissipation path and mechanical stability for automated reflow assembly. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD47. |
| Glass-passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives, critical for under-hood applications. |
| ISO 7637-2 compliant | Meets Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) immunity requirements. |
| Moisture sensitivity level 1 | Enables standard SMT handling without baking or dry-pack requirements, reducing manufacturing overhead. |
Applications
| Automotive On-Board DC/DC Converter | Industrial Switching Power Supply |
|---|---|
Use Scenario: Protecting primary-side MOSFET gate drivers and secondary-side controller ICs from load-dump and inductive switching transients in 12 V/48 V vehicle architectures. IC Role / Device Role / Timing Role: Bidirectional TVS clamping device placed across input bus or across isolated feedback paths to limit voltage excursions. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic interfaces when subjected to ISO 7637-2 Pulse 5a (load dump up to 60 V, 400 ms). | Use Scenario: Safeguarding rectifier outputs and PWM controller inputs in industrial SMPS units exposed to line surges and ground bounce. IC Role / Device Role / Timing Role: Standoff-clamping protector on DC bus lines, absorbing repetitive 10/1000 µs transients up to 400 W peak power. Use Value: Maintains system uptime by suppressing >2 kV EFT/burst noise without degradation after 1000+ surge events. |
| LED Driver Module | Automotive Lighting Control Unit |
Use Scenario: Shielding constant-current LED driver ICs from hot-swap transients and cable discharge events in architectural lighting systems. IC Role / Device Role / Timing Role: Low-leakage bidirectional clamp placed between input capacitor and driver IC supply pin. Use Value: Ensures <1 µA leakage at 9.4 V VWM prevents quiescent current drift in precision current-sense amplifiers. | Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins in headlamp control modules subject to battery disconnect/reconnect spikes. IC Role / Device Role / Timing Role: Fast-response (<1 ps) TVS integrated into PCB-level surge protection network near connector interface. Use Value: Clamps transients to ≤15.6 V within nanoseconds, keeping LIN physical layer within ±18 V absolute maximum rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA | 600 W PPPM rating, SMB package (larger footprint), same VWM/VBR/VC specs. | Higher power margin but requires PCB area increase; suitable where surge energy exceeds 400 W. | Select SMBJ11CA only if design faces repeated ISO 7637-2 Pulse 5a events above 400 W or needs derated thermal margin. |
| 1.5SMC11CA | 1500 W PPPM, SMC package (3.94 mm × 2.69 mm), higher IR (≤5 µA), same VWM/VBR/VC. | Over-specified for most 12 V rail protection; used where board space allows larger package and extreme surge robustness is mandatory. | Choose 1.5SMC11CA only for heavy-duty commercial vehicle ECUs requiring MIL-STD-1275E compliance. |
Compared with SMBJ11CA and 1.5SMC11CA, the P4SMA11CAH offers optimal balance of compact DO-214AC footprint, AEC-Q101 qualification, and 400 W surge capability-making it ideal for space-constrained automotive modules where full 600 W or 1500 W ratings are unnecessary.
Availability
P4SMA11CAH is available at Aetrix Electronics and suitable for automotive on-board DC/DC converters, industrial switching power supplies, and LED driver modules requiring stable component supply with AEC-Q101 assurance and traceable sourcing.
Supply support for P4SMA11CAH 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 Company (TSC) is a vertically integrated Taiwanese semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive and industrial markets.
The P4SMA11CAH belongs to TSC's AEC-Q101-qualified P4SMAx(A)H series, engineered specifically for robust transient suppression in automotive power distribution networks and harsh-environment DC/DC conversion stages.
FAQ
What does the "CAH" suffix indicate in P4SMA11CAH?
The "CAH" suffix in P4SMA11CAH denotes a bidirectional configuration with tightened breakdown voltage tolerance (10.50–11.60 V vs. 9.90–12.10 V for "CH") and AEC-Q101 qualification. This version is explicitly intended for automotive applications requiring symmetrical clamping and enhanced reliability validation beyond standard industrial grades.
Is P4SMA11CAH compatible with lead-free reflow soldering processes?
Yes, P4SMA11CAH supports lead-free reflow soldering per J-STD-020. Its matte tin-plated leads meet solderability requirements up to 260°C peak temperature, and its DO-214AC molding compound complies with UL 94V-0 flammability rating-ensuring compatibility with standard Pb-free assembly lines.
Does P4SMA11CAH meet ISO 7637-2 Pulse 5a (load dump) requirements?
P4SMA11CAH meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b, but Pulse 5a (load dump) requires supplemental protection due to its longer duration (400 ms) and higher energy. Used in conjunction with a series impedance (e.g., fuse or resistor), P4SMA11CAH effectively clamps the initial spike of Pulse 5a while external components absorb sustained energy.
What is the maximum junction temperature rating for P4SMA11CAH?
The maximum junction temperature (TJ MAX) for P4SMA11CAH is +150°C, validated per AEC-Q101 stress testing. This rating enables operation in under-hood automotive locations and high-ambient industrial enclosures, provided PCB copper area and airflow meet thermal derating curves shown in Figure 2 of the datasheet.
How does P4SMA11CAH differ from unidirectional P4SMA11AH?
P4SMA11CAH is bidirectional with symmetrical clamping in both polarities and no cathode marking, whereas P4SMA11AH is unidirectional with a defined cathode band and forward voltage drop (~3.5 V at 25 A). The CAH variant is selected for AC-coupled or floating bus protection; AH is used for DC rail-to-ground suppression where polarity is fixed.
P4SMA11CAH 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):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 27A
- 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)
P4SMA11CAH FAQ
1.How can I place an order for P4SMA11CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA11CAH 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 P4SMA11CAH reliable?
The price and inventory of P4SMA11CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA11CAH is usually 5 days.
3.What payment methods are accepted for P4SMA11CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA11CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA11CAH?
P4SMA11CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA11CAH 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 P4SMA11CAH?
For technical support, including P4SMA11CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA11CAH requirements.
6.How does Aetrix verify that P4SMA11CAH is sourced from the original manufacturer or authorized distributors?
All P4SMA11CAH 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 P4SMA11CAH meets industry standards.
7.What is the process for return or replacement of P4SMA11CAH?
All P4SMA11CAH units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA11CAH, 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 P4SMA11CAH part is unused and in its original packaging.
Return procedure for P4SMA11CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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