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Taiwan Semiconductor Corporation P4SMA36CAH
- Part No.:
- P4SMA36CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA36CAH.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,107
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Product details
Overview
P4SMA36CAH from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, rated for 400W peak pulse power, 34.2V–37.8V breakdown voltage (VBR), and 30.8V working stand-off voltage (VWM). It clamps transients to ≤49.9V at 8.4A (10/1000μs waveform) and supports automotive-grade reliability per AEC-Q101 and ISO 7637-2 Pulse 1/2a/2b/3a/3b.
For engineers reviewing the P4SMA36CAH datasheet, P4SMA36CAH pinout, P4SMA36CAH application, or P4SMA36CAH equivalent, this device is selected for robust overvoltage protection in DC/DC converters, automotive power modules, and industrial adapters where fast response (<1.0ps), low leakage (<1µA @ VWM), and bidirectional surge immunity are critical.
Technical Context
The P4SMA36CAH implements a glass-passivated silicon junction optimized for bidirectional transient suppression. Its clamping behavior follows the 10/1000μs standard waveform with a maximum clamping voltage of 49.9V at 8.4A peak impulse current, enabling reliable protection of downstream 3.3V/5V/12V logic and power rails.
Designed for operation across –55°C to +150°C junction temperature, it features a temperature coefficient of VBR ≤0.099%/°C and meets JESD201 Class 2 whisker resistance, supporting high-reliability deployment in under-hood automotive and industrial environments without derating below 125°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT=1mA | 34.2V min / 37.8V max - defines minimum voltage at which TVS enters avalanche conduction during surge events |
| VWM | 30.8V - maximum continuous reverse operating voltage before leakage exceeds 1µA |
| VC @ IPPM=8.4A | ≤49.9V - clamped voltage seen by protected circuit during full-rated 400W transient |
| PPPM | 400W - peak pulse power handling capability per 10/1000μs waveform per IEC 61000-4-5 |
| IR @ VWM | <1µA - ensures negligible standby power loss and signal integrity in high-impedance circuits |
| Junction Temp Range | –55°C to +150°C - enables use in engine control units, motor drives, and outdoor power supplies |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD |
Pinout & Package
DO-214AC (SMA) surface-mount package with cathode band marking; dual-terminal configuration (anode/cathode) supporting bidirectional operation - no polarity-dependent mounting required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Connects to protected line; conducts during positive or negative surges relative to cathode |
| Cathode | Transient return path (bidirectional) | Marked terminal; completes low-impedance clamp path during either polarity surge event |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating DC lines without external polarity management |
| Fast response time | <1.0ps - limits voltage overshoot before protection engages, preserving sensitive IC inputs |
| Glass passivated junction | Improves long-term stability and moisture resistance vs. epoxy-passivated alternatives |
| ISO 7637-2 compliance | Validated against automotive load dump and switching transient pulses (Pulse 1/2a/2b/3a/3b) |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally compliant manufacturing |
Applications
| Automotive Body Control Module (BCM) | Industrial DC/DC Converter Input Stage |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O from battery line transients during load dump or relay switching. IC Role / Device Role / Timing Role: Bidirectional TVS placed between LIN line and ground to clamp ±100V spikes within 1.0ps. Use Value: Prevents latch-up or permanent damage to 5V-tolerant transceivers while maintaining <1µA leakage at 12V nominal supply. | Use Scenario: Safeguarding primary-side MOSFET gate drivers and controller ICs in 24V-to-5V isolated flyback converters. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing 400W ISO 7637-2 Pulse 1 energy on input rail before it reaches PWM controller. Use Value: Limits clamped voltage to 49.9V, ensuring gate oxide integrity of 60V-rated FETs and stable operation of 3.3V bias regulators. |
| LED Driver Power Supply | Smart Meter Power Input Protection |
Use Scenario: Suppressing inductive kickback and lightning-induced surges on constant-current LED driver inputs in streetlight applications. IC Role / Device Role / Timing Role: Front-end TVS on 36V DC bus, operating continuously at 30.8V VWM with <1µA leakage. Use Value: Enables >50,000-hour field life by eliminating thermal runaway risk from sustained sub-threshold leakage currents. | Use Scenario: Guarding meter MCU power rails against EFT bursts and surge coupling from AC mains input stages. IC Role / Device Role / Timing Role: Secondary-stage TVS after MOV/clamp network, providing precise 49.9V clamping for 3.3V logic supply. Use Value: Reduces system-level failure rate by 92% in IEC 61000-4-4 Level 4 testing (4kV EFT) compared to unclamped designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | 600W rating, DO-214AA (SMB) package, 36.7V–40.6V VBR, 29.8V VWM | Higher power margin but larger footprint; requires PCB re-layout | Select when surge energy exceeds 400W or board space allows SMB package |
| 1.5SMC36CA | 1500W rating, DO-214AB (SMC) package, 36.7V–40.6V VBR, 29.8V VWM | Triple power capacity; incompatible SMA pad layout and thermal mass | Choose only for legacy systems requiring SMC footprint compatibility or >1kW surge duty cycles |
Compared with SMBJ36CA and 1.5SMC36CA, the P4SMA36CAH delivers optimal balance of 400W surge handling, DO-214AC footprint compatibility, and AEC-Q101 qualification-making it the preferred choice for space-constrained automotive and industrial modules where layout reuse and qualification traceability are mandatory.
Availability
P4SMA36CAH is available at Aetrix Electronics and suitable for automotive body electronics, industrial DC/DC converters, LED driver power supplies, and smart meter designs requiring stable component supply with full AEC-Q101 documentation and traceable lot history.
Supply support for P4SMA36CAH 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.
The P4SMA series targets high-reliability transient suppression in automotive subsystems and industrial power conversion, with design emphasis on AEC-Q101 compliance, ISO 7637-2 immunity, and surface-mount manufacturability.
FAQ
What does the "CAH" suffix indicate in P4SMA36CAH?
The "CAH" suffix denotes a bidirectional configuration with A-grade tolerance (tighter VBR spread: 34.2V–37.8V) and halogen-free construction. Unlike unidirectional "CH" variants, P4SMA36CAH provides symmetrical clamping for both polarities without requiring external polarity alignment-critical for protecting floating or AC-coupled signal lines. This specification is confirmed in TSC's ordering information and electrical tables.
Is P4SMA36CAH qualified for automotive applications?
Yes, P4SMA36CAH is AEC-Q101 qualified and explicitly tested to ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b standards. Its –55°C to +150°C operating range, JESD201 Class 2 whisker resistance, and moisture sensitivity level 1 rating meet automotive under-hood and chassis module requirements. These qualifications are documented in TSC's official datasheet version A2102.
What is the maximum clamping voltage of P4SMA36CAH under rated surge conditions?
The maximum clamping voltage (VC) of P4SMA36CAH is 49.9V at 8.4A peak impulse current (IPPM) using the 10/1000μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected circuits experience no more than 49.9V during full-rated 400W transient events-enabling safe interface with 3.3V, 5V, and 12V logic and power ICs.
How does P4SMA36CAH compare to P4SMA36AH in terms of electrical performance?
P4SMA36CAH is bidirectional with symmetrical VBR (34.2V–37.8V), while P4SMA36AH is unidirectional and shares identical VBR, VWM, and VC values but requires correct anode/cathode orientation. Both use DO-214AC packaging and meet AEC-Q101, but only P4SMA36CAH supports AC or floating-line protection without polarity constraints-verified in TSC's "Devices for Bipolar Applications" section.
What is the thermal derating behavior of P4SMA36CAH above 25°C ambient?
P4SMA36CAH follows a linear derating curve from 400W at 25°C to zero at 150°C junction temperature, per Figure 2 in the datasheet. At 85°C ambient (assuming typical PCB thermal resistance), its usable peak pulse power drops to ~280W. This behavior is defined by the absolute maximum ratings table and must be applied in thermal design for sustained surge duty cycles in enclosed enclosures.
P4SMA36CAH 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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 8.4A
- 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)
P4SMA36CAH FAQ
1.How can I place an order for P4SMA36CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA36CAH 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 P4SMA36CAH reliable?
The price and inventory of P4SMA36CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA36CAH is usually 5 days.
3.What payment methods are accepted for P4SMA36CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA36CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA36CAH?
P4SMA36CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA36CAH 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 P4SMA36CAH?
For technical support, including P4SMA36CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA36CAH requirements.
6.How does Aetrix verify that P4SMA36CAH is sourced from the original manufacturer or authorized distributors?
All P4SMA36CAH 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 P4SMA36CAH meets industry standards.
7.What is the process for return or replacement of P4SMA36CAH?
All P4SMA36CAH units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA36CAH, 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 P4SMA36CAH part is unused and in its original packaging.
Return procedure for P4SMA36CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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