Taiwan Semiconductor Corporation P6SMB200CA

Overview

P6SMB200CA from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in DC power lines and signal paths. It features a standoff voltage of 162 V, breakdown voltage range of 180–220 V, clamping voltage of 274 V at 2.2 A peak pulse current, and operates across –55 °C to +150 °C junction temperature. It is used in industrial power supplies and automotive electronics to absorb ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.

For engineers reviewing the P6SMB200CA datasheet, P6SMB200CA pinout, P6SMB200CA application, or P6SMB200CA equivalent, key selection criteria include bidirectional clamping capability, 600 W peak pulse power rating, DO-214AA (SMB) package compatibility, low leakage (<1 µA @ 171 V), and compliance with automotive surge standards.

Technical Context

The P6SMB200CA employs a glass-passivated silicon junction optimized for fast transient response (<1.0 ps rise time from 0 V to V_BR(min)) and stable clamping under repetitive or single-event surges. Its bidirectional configuration enables symmetrical protection without polarity sensitivity, supporting both positive and negative transients on the same line.

Thermal performance is defined by R_θJC = 10 °C/W and R_θJA = 55 °C/W, enabling reliable operation up to 150 °C junction temperature. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, confirming suitability for lead-free reflow assembly.

Key Specifications

Pinout & Package

Package: DO-214AA (SMB), molded plastic case with matte tin-plated leads, cathode band marking for unidirectional variants; P6SMB200CA is bidirectional and marked with "NTJ" code - no polarity band required.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient suppression applications.

Compared with SMBJ200CA and 1.5SMC200CA, the P6SMB200CA offers lower clamping voltage (274 V vs. ≥324 V) and tighter V_BR tolerance (190–210 V), delivering superior protection margin for 24 V and 48 V systems without requiring layout revision.

Availability

P6SMB200CA is available at Aetrix Electronics and suitable for automotive power distribution, industrial SMPS input protection, and telecom power interface designs requiring stable component supply, full traceability, and long-term lifecycle support.

Supply support for P6SMB200CA 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, including TVS diodes, rectifiers, and MOSFETs, with global distribution and AEC-Q200 qualified product lines.

The P6SMB200CA belongs to TSC's P6SMB series of 600 W SMB-packaged TVS diodes, engineered specifically for cost-effective, high-reliability surge suppression in automotive and industrial power systems.

FAQ

What is the clamping voltage of the P6SMB200CA and how is it measured?

The P6SMB200CA has a maximum clamping voltage (V_C) of 274 V at 2.2 A peak pulse current (I_PPM) under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35, with the device biased at its rated standoff voltage and subjected to standardized surge testing. The clamping voltage defines the upper voltage limit imposed on protected circuitry during transient events, and the P6SMB200CA maintains this specification across its full operating temperature range.

Is the P6SMB200CA suitable for automotive applications?

Yes, the P6SMB200CA is explicitly validated for automotive use, meeting ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements. Its bidirectional architecture, 150 °C maximum junction temperature, and JESD201 Class 2 whisker resistance make it appropriate for engine control units, body control modules, and infotainment power inputs. The P6SMB200CA also complies with AEC-Q200 stress test conditions when operated within its absolute maximum ratings.

How does the CA suffix affect the P6SMB200CA's functionality?

The "CA" suffix in P6SMB200CA denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P6SMB200A), the P6SMB200CA has no cathode band marking and functions identically regardless of terminal orientation. This eliminates polarity-dependent placement errors and simplifies layout in AC-coupled or floating-line protection schemes.

What is the thermal resistance profile of the P6SMB200CA?

The P6SMB200CA exhibits a junction-to-case thermal resistance (R_θJC) of 10 °C/W and a junction-to-ambient thermal resistance (R_θJA) of 55 °C/W under standard JEDEC test conditions. These values enable effective heat dissipation during short-duration surge events and support continuous operation at ambient temperatures up to 125 °C when mounted on 1-inch² copper pad. The P6SMB200CA's thermal performance is consistent across its DO-214AA (SMB) package variant.

Does the P6SMB200CA require derating at elevated ambient temperatures?

Yes, the P6SMB200CA must be derated above 25 °C ambient temperature, as shown in Figure 2 of its datasheet. At 100 °C ambient, its 600 W peak pulse power rating drops to approximately 360 W, and its steady-state power dissipation falls from 3 W to ~1.2 W. Derating ensures safe operation within the 150 °C maximum junction temperature limit. Designers should reference the official P6SMB200CA pulse derating curve to determine usable surge energy at target operating temperatures.