Taiwan Semiconductor Corporation P6KE30CAH

Overview

P6KE30CAH from Taiwan Semiconductor is a bidirectional 600W transient voltage suppressor (TVS) diode designed for robust overvoltage protection in automotive and industrial power rails. It features a 30V nominal breakdown voltage (VBR min/max: 27.0–33.0V), 24.3V stand-off voltage (VWM), clamps to ≤43.5V at 14A peak surge current, and operates within -55°C to +175°C junction temperature range. It is AEC-Q101 qualified and housed in DO-204AC (DO-15) package for DC bus and signal line protection in automotive ECUs.

For engineers reviewing the P6KE30CAH datasheet, P6KE30CAH pinout, P6KE30CAH application, or P6KE30CAH equivalent, key selection criteria include bidirectional clamping capability, 10/1000μs surge rating, low dynamic impedance, fast response (<5.0ns), and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

The P6KE30CAH implements a silicon avalanche diode structure optimized for unidirectional or bidirectional transient suppression. Its low dynamic impedance ensures minimal voltage overshoot during 10/1000μs surges up to 600W, while its <5.0ns response time enables effective protection against EFT and ISO 7637-2 pulses. The device exhibits symmetric VBR characteristics (27.0–33.0V) in both directions due to its CA suffix configuration.

Thermal performance is defined by a 175°C maximum junction temperature and derating per Fig.2 above 25°C ambient. It supports steady-state power dissipation of 5W at 75°C with 9.5mm lead length mounting, and withstands 100A non-repetitive forward surge (8.3ms half-sine) in unidirectional mode - though P6KE30CAH operates bidirectionally and thus excludes IFSM rating.

Key Specifications

Pinout & Package

Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case with UL 94V-0 flammability rating and pure tin-plated leads compliant with J-STD-002 solderability. Polarity indicated by cathode band; for bidirectional P6KE30CAH, the band denotes terminal symmetry - no functional anode/cathode distinction.

Key Features

Applications

Equivalent & Alternatives

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

Compared with P6KE30CAH, SMBJ33CA offers SMT compatibility and tighter VBR tolerance but lacks AEC-Q101 qualification, while 1.5KE33CA delivers higher surge energy handling at the cost of larger size and reduced automotive qualification confidence.

Availability

P6KE30CAH is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and DC motor drive circuits requiring stable component supply with AEC-Q101 assurance and DO-15 through-hole compatibility.

Supply support for P6KE30CAH 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 thyristors with global distribution and automotive qualification capabilities.

The P6KE series was developed specifically for cost-effective, high-reliability transient suppression in automotive and industrial power systems, emphasizing AEC-Q101 compliance, robust surge handling, and broad voltage coverage from 6.8V to 440V.

FAQ

What does the "CA" suffix indicate in P6KE30CAH?

The "CA" suffix in P6KE30CAH denotes a bidirectional configuration - meaning the device functions identically in both polarities, with symmetric breakdown voltage (27.0–33.0V) and clamping behavior. This eliminates polarity sensitivity during PCB placement and enables protection of AC-coupled or floating nodes. The "H" suffix confirms AEC-Q101 qualification, verified per TSC's P2203 specification document.

Is P6KE30CAH suitable for protecting USB 2.0 data lines?

Yes, P6KE30CAH can be used for USB 2.0 differential-line protection, leveraging its bidirectional clamping and sub-5ns response to suppress IEC 61000-4-2 ESD events. However, its typical junction capacitance (~200pF at 0V) may degrade signal integrity at 480Mbps; for high-speed compliance, consider lower-capacitance alternatives like SMAJ33CA unless layout minimizes stub length and maintains controlled impedance.

How does P6KE30CAH compare to unidirectional P6KE30A in circuit implementation?

P6KE30CAH replaces two unidirectional diodes (anode-to-ground and cathode-to-ground) with a single bidirectional device, simplifying layout and reducing component count. Unlike P6KE30A - which requires correct orientation relative to DC bias - P6KE30CAH has no polarity constraint. Its VBR range (27.0–33.0V) matches P6KE30A's 28.5–31.5V range within tolerance, making it a functional upgrade for existing designs needing polarity flexibility.

What is the maximum ambient temperature at which P6KE30CAH can sustain full 600W surge capability?

P6KE30CAH delivers full 600W peak pulse power only at TA = 25°C. According to Fig.2 in the TSC P2203 datasheet, derating begins linearly above 25°C: at 75°C ambient, it retains ~70% of rated power (~420W), and at 125°C, ~30% (~180W). For sustained operation near 175°C junction limit, thermal design must ensure adequate PCB copper area and airflow to maintain junction temperature within spec.

Does P6KE30CAH meet RoHS and halogen-free requirements?

Yes, P6KE30CAH complies with RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21, as confirmed in the "Features" section of the TSC P2203 datasheet. The molding compound is UL 94V-0 rated, and terminals are pure tin plated - satisfying environmental and safety requirements for automotive and industrial end equipment.