Taiwan Semiconductor Corporation P6SMB160CA

Overview

P6SMB160CA from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode designed for overvoltage protection in DC power lines and signal interfaces. It features a standoff voltage of 130 V, breakdown voltage range of 144–176 V at 1 mA, clamping voltage of 230 V at 2.7 A (10/1000 µs), junction temperature rating up to +150°C, and DO-214AA (SMB) package - used in switching mode power supplies and industrial adapters.

For engineers reviewing the P6SMB160CA datasheet, P6SMB160CA pinout, P6SMB160CA application, or P6SMB160CA equivalent, key selection criteria include peak pulse power (600 W), bidirectional clamping behavior, low leakage (<1 µA at 130 V), fast response (<1 ps), and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive transients.

Technical Context

The P6SMB160CA operates as a bidirectional avalanche diode, symmetrically clamping voltage surges above ±144 V in either polarity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage, while the DO-214AA package supports automated placement and meets UL 94V-0 flammability requirements.

Thermal performance is defined by R_θJC = 10°C/W and R_θJA = 55°C/W, enabling reliable operation under transient stress without thermal runaway. Electrical behavior follows ANSI/IEEE C62.35 standards, with clamping validated using standardized 10/1000 µs waveform testing.

Key Specifications

Pinout & Package

DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, cathode band marking for polarity identification (bidirectional symmetry means both terminals are functionally identical; no anode/cathode distinction in circuit use).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ160CA and 1.5SMC160CA, the P6SMB160CA offers optimal balance of low leakage (<1 µA), compact SMB footprint, and verified ISO 7637-2 compliance - making it ideal for space-constrained industrial and consumer power designs where precise clamping and manufacturability are critical.

Availability

P6SMB160CA is available at Aetrix Electronics and suitable for switching mode power supplies, industrial adapters, and television power boards requiring stable component supply and full traceability.

Supply support for P6SMB160CA 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 devices since 1979.

The P6SMB160CA belongs to TSC's P6SMBx series - engineered specifically for robust, cost-effective transient suppression in consumer, industrial, and automotive auxiliary power systems with strict size and reliability requirements.

FAQ

What is the clamping voltage of the P6SMB160CA under a 10/1000 µs surge?

The P6SMB160CA has a maximum clamping voltage (V_C) of 230 V when subjected to a 2.7 A peak pulse current with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during standardized transient events - critical for ensuring downstream components like MOSFETs or controllers remain within safe operating limits. The P6SMB160CA maintains this clamping performance across its full operating temperature range.

Is the P6SMB160CA unidirectional or bidirectional?

The P6SMB160CA is a bidirectional TVS diode, indicated by the "CA" suffix per TSC's naming convention. It provides symmetrical clamping for both positive and negative voltage transients, with identical V_BR, V_C, and I_PPM specifications in either polarity. This makes the P6SMB160CA suitable for protecting AC-coupled signals, floating DC buses, or any interface where polarity reversal or differential surges may occur - unlike unidirectional variants (e.g., P6SMB160A) which only protect one polarity.

What does the "CA" suffix mean in P6SMB160CA?

The "CA" suffix in P6SMB160CA denotes a bidirectional configuration with common-anode construction - meaning both terminals behave identically under reverse and forward bias, enabling symmetrical transient suppression. Per TSC documentation, "C or CA suffix" explicitly identifies bipolar types across the P6SMB6.8–P6SMB220A family. This distinguishes the P6SMB160CA from unidirectional versions (e.g., P6SMB160A) and confirms its suitability for applications requiring dual-polarity protection without external circuitry.

Can the P6SMB160CA be used in automotive applications?

Yes, the P6SMB160CA is qualified for automotive use per ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test waveforms - covering load dump, alternator ripple, and inductive switching transients. Its DO-214AA package meets JESD201 Class 2 whisker resistance and moisture sensitivity level 1, supporting lead-free reflow compatibility. While not AEC-Q200 certified out-of-box, the P6SMB160CA's electrical and mechanical validation aligns with Tier-2 automotive subsystem requirements such as infotainment power supplies and body control modules.

What is the maximum junction temperature rating for the P6SMB160CA?

The P6SMB160CA has a maximum junction temperature (T_J) rating of +150°C, as specified in TSC's absolute maximum ratings table. This enables reliable operation in high-ambient environments such as enclosed industrial power enclosures or under-hood automotive locations. Thermal design must account for R_θJA = 55°C/W and R_θJC = 10°C/W to ensure steady-state and transient junction temperatures remain below this limit - especially during repetitive surge events or elevated ambient conditions. The P6SMB160CA's glass-passivated junction further enhances thermal stability over time.