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Taiwan Semiconductor Corporation P4SMA36AH
- Part No.:
- P4SMA36AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA36AH.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,962
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Product details
Overview
P4SMA36AH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for overvoltage protection in DC power lines and signal paths. It features a 34.2–37.8 V breakdown voltage (VBR), 30.8 V working stand-off voltage (VWM), 49.9 V clamping voltage (VC) at 8.4 A peak pulse current, 400 W peak pulse power rating (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the P4SMA36AH datasheet, P4SMA36AH pinout, P4SMA36AH application, or P4SMA36AH equivalent, this device is selected for robust ESD and surge protection in automotive infotainment power rails, industrial DC/DC converter inputs, and lighting driver circuits where fast response (<1 ps), low leakage (<1 µA at VWM), and DO-214AC (SMA) compatibility are critical.
Technical Context
The P4SMA36AH operates as a unidirectional avalanche diode with glass-passivated junction, optimized for clamping transients on positive-polarity DC lines. Its 150 °C maximum junction temperature and -55 to +150 °C operating range support under-hood automotive environments and high-temperature industrial PCBs.
It meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements and complies with JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1 - enabling direct use in lead-free reflow without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 34.2 V / 37.8 V - ensures reliable turn-on above 30.8 V nominal rail while avoiding false triggering |
| VWM | 30.8 V - maximum continuous reverse voltage before leakage exceeds 1 µA |
| VC @ IPPM | 49.9 V at 8.4 A - limits downstream IC stress during 10/1000 µs surges |
| PPPM | 400 W - sustains single-event transients up to 400 W without failure |
| IR @ VWM | <1 µA - negligible standby power loss in battery-powered systems |
| TJ max | +150 °C - supports operation in engine control units and LED drivers near heat sources |
| Package | DO-214AC (SMA) - industry-standard SMD footprint compatible with automated placement and IPC-7351B land patterns |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with matte tin-plated leads, cathode band marking polarity, 0.060 g weight, UL 94V-0 rated compound, and J-STD-002 solderability compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or return path; defines unidirectional clamping direction |
| Cathode | High-side transient input | Connected to protected line (e.g., 3.3 V/5 V/12 V rail); conducts when VIN exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including temperature cycling, HTRB, and ESD testing per stress test plan |
| Glass passivated junction | Enhances long-term stability and reduces parameter drift under thermal/humidity stress |
| Clamping response <1.0 ps | Protects sensitive logic and analog circuitry before transient energy couples into system |
| ISO 7637-2 compliant | Withstands automotive load dump and inductive switching pulses without degradation |
| Moisture sensitivity level 1 | Zero bake requirement prior to reflow - reduces manufacturing overhead and avoids moisture-induced popcorning |
Applications
| Automotive Infotainment Power Rail | Industrial DC/DC Converter Input |
|---|---|
Use Scenario: Protecting 12 V supply lines feeding head unit microcontrollers and audio codecs against load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between input rail and chassis ground to clamp transients to ≤49.9 V. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V LDOs and USB PHYs downstream of the 12 V rail. | Use Scenario: Safeguarding isolated DC/DC converter primary-side input against EFT bursts and lightning-induced surges in factory automation controllers. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted across input terminals to absorb 400 W pulses without derating at 25 °C ambient. Use Value: Enables >100,000 surge cycles without parameter shift, supporting 10+ year field life in industrial PLCs. |
| LED Driver Supply Protection | On-Board Charger (OBC) Auxiliary Rail |
Use Scenario: Shielding constant-current LED driver ICs from voltage spikes generated by MOSFET switching in streetlight and tunnel lighting systems. IC Role / Device Role / Timing Role: Fast-clamping TVS placed at driver IC VCC pin to limit overshoot during hot-swap events. Use Value: Maintains <1 µA leakage at 30.8 V, minimizing standby current in always-on lighting control modules. | Use Scenario: Protecting 12 V auxiliary power rails in electric vehicle on-board chargers from CAN bus coupling and relay bounce transients. IC Role / Device Role / Timing Role: AEC-Q101-compliant TVS used on low-voltage control side to meet OEM EMC requirements per CISPR 25 Class 5. Use Value: Eliminates need for secondary filtering components due to sub-50 V clamping performance at full rated current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A | 600 W peak power, DO-214AA (SMB) package, 58.1 V clamping at 10.3 A | Higher clamping voltage and larger footprint; suited for higher-energy surges where board space allows | Select SMBJ36A only if system-level surge tests exceed 400 W and DO-214AA layout is available |
| 1.5SMC36A | 1500 W peak power, DO-214AB (SMC) package, 58.1 V clamping at 25.8 A | Designed for heavy-duty industrial surge immunity; incompatible with DO-214AC land pattern | Choose 1.5SMC36A when protecting AC-input front ends or high-power motor drives requiring >1 kW surge handling |
Compared with SMBJ36A and 1.5SMC36A, the P4SMA36AH delivers optimal balance of compact DO-214AC footprint, automotive qualification, and precise 49.9 V clamping - making it preferred for space-constrained, AEC-Q101–mandated 12–48 V DC systems where strict voltage limiting is required.
Availability
P4SMA36AH is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial DC/DC converters, LED lighting drivers, and on-board EV charger auxiliary rails requiring stable component supply and AEC-Q101 compliance.
Supply support for P4SMA36AH 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 MOSFETs with global distribution and AEC-Q101 certification capability.
The P4SMA36AH belongs to TSC's P4SMA(A)H series of surface-mount TVS diodes engineered specifically for automotive and industrial surge immunity - emphasizing low clamping voltage, fast response, and robust packaging for high-reliability DC line protection.
FAQ
What is the clamping voltage of the P4SMA36AH and how is it measured?
The P4SMA36AH has a maximum clamping voltage (VC) of 49.9 V at 8.4 A peak pulse current, tested using the standardized 10/1000 µs double-exponential surge waveform per IEC 61000-4-5 and ANSI/IEEE C62.35. This value represents the upper voltage limit imposed on protected circuitry during worst-case transient events, and is confirmed in the official Taiwan Semiconductor datasheet revision A2102.
Is the P4SMA36AH suitable for automotive applications?
Yes, the P4SMA36AH is AEC-Q101 qualified and meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements - making it suitable for automotive power line protection in infotainment, body control modules, and ADAS subsystems. Its DO-214AC package, MSL Level 1 rating, and -55 °C to +150 °C operating range further validate its automotive readiness.
What is the difference between P4SMA36AH and P4SMA36H?
The P4SMA36AH has tighter breakdown voltage tolerance (34.2–37.8 V) versus P4SMA36H (32.4–39.6 V), lower leakage current specification, and improved temperature coefficient consistency. The "A" suffix denotes an enhanced variant with tighter parametric control - critical for designs requiring predictable clamping behavior across temperature and production lots.
Does the P4SMA36AH have polarity markings and how is it installed?
Yes, the P4SMA36AH uses a cathode band marking on the DO-214AC (SMA) package to indicate polarity. It must be installed with the cathode connected to the protected line (e.g., 36 V rail) and the anode to ground - ensuring unidirectional clamping action. Reverse installation renders the device non-functional for overvoltage protection.
What is the peak pulse power rating and derating behavior of the P4SMA36AH?
The P4SMA36AH is rated for 400 W peak pulse power at TA = 25 °C using the 10/1000 µs waveform. Power capability derates linearly above 25 °C per Figure 2 in the datasheet - e.g., ~320 W at 75 °C ambient - enabling accurate thermal design for high-temperature enclosures like LED drivers or under-hood ECUs.
P4SMA36AH 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:
- 1
- Bidirectional Channels:
- -
- 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)
P4SMA36AH FAQ
1.How can I place an order for P4SMA36AH through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA36AH 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 P4SMA36AH reliable?
The price and inventory of P4SMA36AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA36AH is usually 5 days.
3.What payment methods are accepted for P4SMA36AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA36AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA36AH?
P4SMA36AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA36AH 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 P4SMA36AH?
For technical support, including P4SMA36AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA36AH requirements.
6.How does Aetrix verify that P4SMA36AH is sourced from the original manufacturer or authorized distributors?
All P4SMA36AH 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 P4SMA36AH meets industry standards.
7.What is the process for return or replacement of P4SMA36AH?
All P4SMA36AH units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA36AH, 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 P4SMA36AH part is unused and in its original packaging.
Return procedure for P4SMA36AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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