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Taiwan Semiconductor Corporation P4SMA36H
- Part No.:
- P4SMA36H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA36H.pdf
- Description:
- 400W, 36V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:8,523
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Product details
Overview
P4SMA36H 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 32.4–39.6 V breakdown voltage (VBR), 29.1 V working stand-off voltage (VWM), 52.0 V clamping voltage (VC) at 8.0 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 P4SMA36H datasheet, P4SMA36H pinout, P4SMA36H application, or P4SMA36H equivalent, this device is selected for robust surge immunity in automotive body electronics, industrial DC/DC converters, and lighting control circuits where fast clamping (<1 ps response), low leakage (<1 µA at VWM), and DO-214AC package compatibility are critical.
Technical Context
The P4SMA36H operates as a unidirectional avalanche diode with glass-passivated junction, enabling stable breakdown behavior under repetitive transients. Its clamping action limits voltage excursions to ≤52.0 V during 10/1000 µs surges up to 8.0 A, while maintaining <1 µA reverse leakage above 29.1 V.
Designed for compliance with ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b, it supports automotive load-dump and inductive-switching transient suppression without derating below 150 °C junction temperature. The DO-214AC (SMA) package ensures compatibility with automated SMT placement and meets J-STD-020 moisture sensitivity level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1.0 mA | 32.4–39.6 V - defines minimum/maximum voltage at which avalanche conduction begins; sets overvoltage trip threshold |
| VWM | 29.1 V - maximum continuous reverse operating voltage; must exceed system nominal DC rail (e.g., 24 V systems) |
| VC @ IPPM = 8.0 A | 52.0 V - clamped voltage during 10/1000 µs surge; determines protected circuit's maximum stress level |
| PPPM | 400 W - peak pulse power handling capability; defines survivability against standardized automotive transients |
| IR @ VWM | <1 µA - ultra-low reverse leakage ensures minimal standby power loss and no interference with high-impedance sensing |
| TJ max | +150 °C - enables operation in under-hood automotive environments and high-power-density PCB layouts |
| Package | DO-214AC (SMA) - industry-standard surface-mount outline with cathode band marking; compatible with IPC-7351B footprint |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band; weight ≈ 0.060 g; UL 94V-0 rated compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path); conducts during forward surge or ESD events |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., 24 V rail); initiates avalanche breakdown when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including temperature cycling, humidity bias, and mechanical shock per stress test requirements |
| Glass passivated junction | Ensures long-term stability of VBR and low parameter drift across 1000+ hours of life testing at TJ = 125 °C |
| Clamping time <1.0 ps | Enables protection of high-speed digital interfaces and microcontroller I/O pins against ESD and fast-rising transients |
| Meets ISO 7637-2 Pulse 1/2a/2b/3a/3b | Guarantees functional integrity during battery disconnect, alternator load dump, and inductive switching events in 12 V/24 V vehicle networks |
| Moisture sensitivity level 1 | Eliminates need for baking prior to reflow; supports standard JEDEC J-STD-020-compliant assembly processes |
Applications
| Automotive Body Control Module | Industrial DC/DC Converter Input |
|---|---|
Use Scenario: Protecting LIN bus transceivers and door module microcontrollers from load-dump transients during battery disconnection. IC Role / Device Role / Timing Role: Unidirectional TVS placed between LIN line and ground to clamp negative-going spikes and positive surges exceeding 29.1 V. Use Value: Limits voltage seen by transceiver IC to ≤52.0 V during ISO 7637-2 Pulse 2b (50 V, 100 ms), preventing latch-up or permanent damage. | Use Scenario: Safeguarding primary-side MOSFET gate drivers and controller ICs in 24 V input isolated DC/DC modules. IC Role / Device Role / Timing Role: Mounted across input capacitor to absorb energy from inductive kickback and conducted EMI during switching transitions. Use Value: Withstands 400 W peak pulses without degradation, ensuring >100,000 surge cycles in factory automation power supplies. |
| LED Driver Power Input | On-Board Charger (OBC) Auxiliary Supply |
Use Scenario: Shielding constant-current LED driver ICs from voltage spikes induced by relay switching in streetlight control cabinets. IC Role / Device Role / Timing Role: Placed at 24 V input rail upstream of buck converter to suppress 100 V/10 ms transients per IEC 61000-4-4. Use Value: Clamps to 52.0 V within <1 ps, limiting stress on driver IC's internal LDO and enabling reliable dimming control under grid instability. | Use Scenario: Protecting 12 V auxiliary supply rails in electric vehicle on-board chargers exposed to CAN bus coupling and motor drive noise. IC Role / Device Role / Timing Role: Bidirectional protection not required; unidirectional P4SMA36H used on positive rail to ground for cost-optimized surge margin. Use Value: Provides 29.1 V stand-off margin above nominal 24 V OBC auxiliary rail while delivering 52.0 V clamping for EMC compliance per CISPR 25 Class 5. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A | 600 W rating, DO-214AA package, 58.1 V clamping at 10.3 A; higher power but larger footprint | Preferred for higher-energy transients (e.g., ISO 16750-2 Load Dump) where 400 W is insufficient | Select SMBJ36A when system-level surge testing requires >400 W margin or board space allows DO-214AA |
| 1.5SMC36A | 1500 W rating, DO-214AB package, 58.1 V clamping at 25.8 A; significantly larger and higher-cost | Used in heavy-duty industrial motor drives where multi-kA surge immunity is mandated | Choose 1.5SMC36A only if validated test data shows P4SMA36H fails repeated 10/1000 µs surges above 8 A |
Compared with SMBJ36A and 1.5SMC36A, the P4SMA36H offers optimal balance of AEC-Q101 compliance, DO-214AC compactness, and 400 W surge capacity for cost-sensitive automotive and industrial 24 V systems-without requiring PCB redesign or thermal derating penalties.
Availability
P4SMA36H is available at Aetrix Electronics and suitable for automotive body electronics, industrial DC/DC converters, and LED lighting control systems requiring stable component supply, AEC-Q101 qualification, and DO-214AC footprint compatibility.
Supply support for P4SMA36H 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 validation capabilities.
The P4SMA36H belongs to TSC's P4SMAxH series of surface-mount TVS diodes engineered specifically for automotive and industrial transient suppression-emphasizing fast response, low leakage, and robust surge endurance in compact SMA packages.
FAQ
What is the clamping voltage of the P4SMA36H and how is it measured?
The P4SMA36H has a maximum clamping voltage (VC) of 52.0 V at 8.0 A peak pulse current using the 10/1000 µs waveform defined in IEC 61000-4-5. This value is measured across the device terminals during standardized surge testing and represents the highest voltage imposed on downstream circuitry during worst-case transient events. The P4SMA36H maintains this clamping performance across its full operating temperature range (−55 °C to +150 °C).
Is the P4SMA36H suitable for bidirectional transient protection?
No, the P4SMA36H is a unidirectional TVS diode intended for protection against positive-going transients on DC lines referenced to ground. For bidirectional applications (e.g., AC lines or differential buses), TSC offers the P4SMA36AH variant with symmetrical breakdown characteristics. The P4SMA36H must be installed with correct polarity-cathode toward the protected line-to ensure proper avalanche conduction.
Does the P4SMA36H meet automotive qualification standards?
Yes, the P4SMA36H is AEC-Q101 qualified and explicitly tested to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements for automotive electrical disturbances. Its glass-passivated junction, MSL Level 1 rating, and −55 °C to +150 °C operating range confirm suitability for under-hood and body-control module deployments where reliability under thermal and mechanical stress is mandatory.
What is the reverse leakage current specification for the P4SMA36H?
The P4SMA36H exhibits a maximum reverse leakage current (IR) of less than 1 µA when biased at its working stand-off voltage (VWM) of 29.1 V. This ultra-low leakage ensures negligible power loss in always-on automotive modules and prevents false triggering in high-impedance sensor interfaces. Leakage remains stable across temperature and does not degrade after repeated surge exposure.
Can the P4SMA36H be used in place of the P4SMA36AH?
No-the P4SMA36H and P4SMA36AH are distinct variants: the former is unidirectional with asymmetric IV characteristics, while the latter is bidirectional with matched breakdown in both polarities. Substituting P4SMA36H for P4SMA36AH in AC-coupled or floating-bus applications will result in incomplete protection during negative transients. Always verify circuit topology and polarity requirements before selecting between these two P4SMA36H part numbers.
P4SMA36H 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):
- 29.1V
- Voltage - Breakdown (Min):
- 32.4V
- Voltage - Clamping (Max) @ Ipp:
- 52V
- Current - Peak Pulse (10/1000µs):
- 8A
- 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)
P4SMA36H FAQ
1.How can I place an order for P4SMA36H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA36H 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 P4SMA36H reliable?
The price and inventory of P4SMA36H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA36H is usually 5 days.
3.What payment methods are accepted for P4SMA36H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA36H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA36H?
P4SMA36H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA36H 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 P4SMA36H?
For technical support, including P4SMA36H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA36H requirements.
6.How does Aetrix verify that P4SMA36H is sourced from the original manufacturer or authorized distributors?
All P4SMA36H 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 P4SMA36H meets industry standards.
7.What is the process for return or replacement of P4SMA36H?
All P4SMA36H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA36H, 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 P4SMA36H part is unused and in its original packaging.
Return procedure for P4SMA36H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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