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Taiwan Semiconductor Corporation P4SMA36CA
- Part No.:
- P4SMA36CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA36CA.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
P4SMA36CA from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in DC power lines and signal paths. It features a 36 V working stand-off voltage (VWM), 34.2–37.8 V breakdown voltage (VBR) at 1 mA, 49.9 V clamping voltage (VC) at 8.4 A peak pulse current, and 400 W peak pulse power rating under 10/1000 µs waveform - deployed in switching mode power supplies and on-board DC/DC converters.
For engineers reviewing the P4SMA36CA datasheet, P4SMA36CA pinout, P4SMA36CA application, or P4SMA36CA equivalent, key selection criteria include bidirectional clamping capability, DO-214AC (SMA) package compatibility, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, sub-1 ps response time, and <1 µA reverse leakage at rated VWM - critical for automotive and industrial power rail protection.
Technical Context
The P4SMA36CA operates as a bidirectional avalanche diode, leveraging glass-passivated junction technology to achieve fast transient suppression without degradation under repeated surge events. Its symmetrical I-V characteristics enable identical clamping performance in both polarities, supporting unidirectional and bidirectional circuit protection without polarity dependency.
Designed for surface-mount automation, it complies with J-STD-020 moisture sensitivity level 1 and JESD 201 class 2 whisker resistance. The device sustains 40 A non-repetitive forward surge current (IFSM) and maintains stable operation across –55 °C to +150 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.8 V - maximum continuous reverse voltage before significant leakage; defines safe operating DC bias limit |
| VBR min/max | 34.2 V / 37.8 V at 1 mA - precise avalanche onset window ensures predictable turn-on during transients |
| VC @ IPPM | 49.9 V at 8.4 A (10/1000 µs) - limits downstream voltage stress to protected ICs and regulators |
| PPPM | 400 W - peak power handling capacity for standardized automotive and industrial surge waveforms |
| IR @ VWM | <1 µA - negligible standby power loss and minimal impact on high-impedance sensing circuits |
| TJ max | +150 °C - enables reliable operation in thermally constrained PCB layouts and enclosed enclosures |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, bi-directional configuration with cathode band omitted (symmetrical terminals). Matte tin-plated leads, UL 94V-0 molding compound, 0.060 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Transient current entry (negative polarity) | Accepts reverse surge current during negative transients; electrically identical to Cathode in bidirectional operation |
| Cathode (K) | Transient current entry (positive polarity) | Accepts reverse surge current during positive transients; functionally interchangeable with Anode due to CA symmetry |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IR specs in both directions - eliminates polarity marking and routing constraints |
| Fast response time | <1.0 ps - initiates conduction before most microsecond-scale transients fully develop |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) - meets automotive EMC requirements |
| Glass passivated junction | Enhances long-term reliability and stability of breakdown voltage under thermal cycling and humidity exposure |
| Moisture sensitivity level 1 | No floor life limitation or bake requirement prior to reflow - supports standard SMT assembly without special handling |
Applications
| Automotive Infotainment Power Rail | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Protecting 3.3 V/5 V/12 V supply rails feeding head unit MCUs and display drivers against load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed upstream of LDOs and PMICs to limit transient overvoltage to safe levels. Use Value: With 49.9 V clamping and 400 W peak power rating, P4SMA36CA prevents latch-up or gate oxide damage in downstream logic and analog ICs during ISO 7637-2 Pulse 2b events. | Use Scenario: Safeguarding 24 V digital input modules from field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary overvoltage protector at terminal block interface, shunting energy before optocoupler or Schmitt trigger input stage. Use Value: Sub-1 ps response ensures clamping activation prior to 100 ns rise-time transients reaching sensitive input circuitry, reducing false triggering and component wear. |
| LED Driver Output Stage | Telecom DC Power Interface |
Use Scenario: Suppressing inductive kickback from constant-current LED string drivers during PWM dimming or fault interruption. IC Role / Device Role / Timing Role: Parallel-connected TVS across output terminals to clamp flyback spikes and protect MOSFET switches and current-sense resistors. Use Value: 30.8 V VWM allows seamless integration into 24–36 V LED systems while maintaining low leakage (<1 µA) to avoid affecting regulation accuracy. | Use Scenario: Front-end protection for -48 V telecom power feeds against lightning-induced surges and hot-swap transients. IC Role / Device Role / Timing Role: First-line transient suppressor on DC input before DC/DC converter and supervisor ICs. Use Value: Bidirectional capability enables use on floating or grounded -48 V rails without polarity concerns; DO-214AC footprint supports high-density board layout. |
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 (Bourns) | Same DO-214AA package; 600 W PPPM rating; 51.0 V VC @ 11.7 A; slightly higher clamping voltage | Higher power handling suits more severe surge environments (e.g., outdoor telecom); larger footprint may require layout revision | Select SMBJ36CA when >400 W surge margin is required and PCB space permits DO-214AA |
| 1.5KE36CA (ON Semiconductor) | Through-hole DO-15 package; 1500 W PPPM; 58.1 V VC @ 25.8 A; higher thermal mass but incompatible mounting | Used in legacy or high-reliability through-hole designs; not suitable for automated SMT production | Choose 1.5KE36CA only for manual assembly or retrofit where SMT is unavailable |
Compared with SMBJ36CA and 1.5KE36CA, the P4SMA36CA offers optimal balance of compact DO-214AC footprint, 400 W surge capability, and sub-1 µA leakage - making it ideal for space-constrained, high-volume automotive and industrial SMT applications where strict VWM and low standby current are prioritized.
Availability
P4SMA36CA is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial PLC I/O modules, and LED driver output stages requiring stable component supply, consistent parametric performance, and full traceability across production batches.
Supply support for P4SMA36CA 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 - headquartered in Hsinchu, Taiwan, with global distribution and AEC-Q200 qualified product lines.
The P4SMA36CA belongs to TSC's P4SMAx family of surface-mount TVS diodes engineered specifically for cost-effective, high-reliability transient protection in automotive, industrial, and consumer power systems - emphasizing ISO 7637-2 compliance, tight parameter tolerances, and SMT manufacturability.
FAQ
What does the 'CA' suffix indicate in P4SMA36CA?
The 'CA' suffix in P4SMA36CA denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P4SMA36A), P4SMA36CA has no anode/cathode polarity marking and exhibits identical electrical characteristics in either direction, simplifying layout and eliminating orientation errors during automated placement.
Is P4SMA36CA compliant with automotive EMC standards?
Yes, P4SMA36CA meets ISO 7637-2 requirements for Pulse 1 (inductive load dump), Pulse 2a/2b (supply line transients), and Pulse 3a/3b (capacitive coupling), as confirmed in Taiwan Semiconductor's official documentation. Its 400 W peak pulse power rating and sub-1 ps response time make it suitable for protecting ECUs, body control modules, and infotainment systems against real-world vehicle electrical disturbances.
What is the maximum clamping voltage of P4SMA36CA under standard test conditions?
The maximum clamping voltage (VC) of P4SMA36CA is 49.9 V when subjected to an 8.4 A peak impulse current with a 10/1000 µs waveform - measured per ANSI/IEEE C62.35. This value represents the upper limit of voltage seen by downstream components during worst-case surge events, ensuring safe operation of 36 V-rated or higher systems.
Can P4SMA36CA be used in place of a unidirectional TVS like P4SMA36A?
No - P4SMA36CA and P4SMA36A are not interchangeable without circuit review. While both share the same VWM (30.8 V) and similar VBR range, P4SMA36A is unidirectional and requires correct polarity placement, whereas P4SMA36CA is bidirectional and polarity-agnostic. Substituting one for the other may result in improper clamping or failure to suppress negative transients in unidirectional designs.
What is the junction temperature rating for P4SMA36CA?
The P4SMA36CA has a maximum operating junction temperature (TJ) of +150 °C and a storage temperature range of –55 °C to +150 °C. This wide thermal specification supports deployment in under-hood automotive environments, industrial enclosures, and high-power LED drivers where ambient temperatures exceed 100 °C - provided PCB copper area and airflow meet thermal derating guidelines in Figure 2 of the datasheet.
P4SMA36CA 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA36CA FAQ
1.How can I place an order for P4SMA36CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA36CA 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 P4SMA36CA reliable?
The price and inventory of P4SMA36CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA36CA is usually 5 days.
3.What payment methods are accepted for P4SMA36CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA36CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA36CA?
P4SMA36CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA36CA 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 P4SMA36CA?
For technical support, including P4SMA36CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA36CA requirements.
6.How does Aetrix verify that P4SMA36CA is sourced from the original manufacturer or authorized distributors?
All P4SMA36CA 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 P4SMA36CA meets industry standards.
7.What is the process for return or replacement of P4SMA36CA?
All P4SMA36CA units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA36CA, 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 P4SMA36CA part is unused and in its original packaging.
Return procedure for P4SMA36CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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