Taiwan Semiconductor Corporation SMCJ160C

Overview

SMCJ160C from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 160V working stand-off voltage (VWM), 178–218V breakdown voltage (VBR), and 287V maximum clamping voltage (VC) at 5.4A peak impulse current. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.

For engineers reviewing the SMCJ160C datasheet, SMCJ160C pinout, SMCJ160C application, or SMCJ160C equivalent, this device is selected for high-energy ESD and load-dump protection where fast response (<1.0 ps), low leakage (<1 µA @ 160V), and robust 1500W surge capability are required in compact SMC packaging.

Technical Context

The SMCJ160C is a glass-passivated, bipolar TVS diode designed for bidirectional transient suppression across both polarities without polarity dependence. Its junction operates from –55°C to +150°C, with thermal resistance R_θJA = 55°C/W and R_θJC = 10°C/W, enabling reliable operation under sustained ambient stress.

It complies with ISO 7637-2 for automotive electrical disturbance immunity and meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1 - confirming suitability for reflow-soldered industrial and automotive PCBs without preconditioning.

Key Specifications

Pinout & Package

DO-214AB (SMC) package: molded plastic case with coplanar matte tin-plated leads; cathode band marking omitted for bidirectional SMCJ160C (C-suffix denotes bipolar configuration).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ160CA and 1.5KE160CA, the SMCJ160C delivers identical 160V stand-off and bidirectional clamping in an SMT-optimized SMC package with verified sub-1 ps response and full ISO 7637-2 compliance - making it the preferred choice for automotive-grade SMT production requiring 1500W surge resilience.

Availability

SMCJ160C is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O modules, LED driver systems, and telecom power interfaces requiring stable component supply and full ISO 7637-2 transient immunity certification.

Supply support for SMCJ160C 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 Company (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive, industrial, and consumer applications.

The SMCJ series is engineered specifically for high-reliability transient suppression in harsh environments - targeting ISO 7637-2 compliance, AEC-Q101 readiness, and SMT manufacturability in DO-214AB packaging.

FAQ

What does the 'C' suffix indicate in SMCJ160C?

The 'C' suffix in SMCJ160C denotes a bidirectional configuration - meaning the device functions identically in both forward and reverse bias, with symmetrical VBR and VC characteristics. Unlike unidirectional variants (e.g., SMCJ160A), the SMCJ160C has no cathode marking and is used where polarity-agnostic transient suppression is required, such as across AC lines or floating DC buses. This makes SMCJ160C ideal for applications like telecom power inputs and industrial sensor interfaces where voltage polarity may vary.

Does SMCJ160C meet AEC-Q101 qualification requirements?

While the SMCJ160C datasheet confirms compliance with ISO 7637-2, JESD201 Class 2 whisker testing, and J-STD-020 MSL Level 1 - all critical prerequisites for automotive use - Taiwan Semiconductor does not explicitly list AEC-Q101 qualification status for SMCJ160C in the provided documentation. Engineers deploying SMCJ160C in automotive applications should verify formal AEC-Q101 test reports directly with Taiwan Semiconductor or authorized distributors before final design-in. The SMCJ160C's construction and thermal specs align with typical AEC-Q101 stress conditions.

What is the maximum clamping voltage of SMCJ160C and under what test condition?

The maximum clamping voltage (VC) of SMCJ160C is 287 V, measured at a peak impulse current (IPPM) of 5.4 A using the standardized 10/1000 µs double-exponential surge waveform defined in Fig.5 of the datasheet. This value represents the upper limit of voltage seen by downstream circuitry during worst-case transient events and is guaranteed across the full operating temperature range (–55°C to +150°C). It is critical for verifying that protected ICs remain within their absolute maximum voltage ratings.

Can SMCJ160C replace SMCJ160A in a design?

No - SMCJ160C and SMCJ160A are not interchangeable. SMCJ160A is unidirectional (cathode-marked, asymmetric conduction), with VF = 5.0 V and VC = 259 V @ 6.0 A. SMCJ160C is bidirectional, with no cathode marking and VC = 287 V @ 5.4 A. Substituting SMCJ160C for SMCJ160A introduces unintended conduction paths in DC-coupled circuits and alters clamping behavior. Always match suffix: 'A' for unidirectional, 'C' for bidirectional. The SMCJ160C must be used only where bidirectional protection is explicitly required.

What is the thermal resistance profile of SMCJ160C and how does it affect PCB layout?

The SMCJ160C has R_θJA = 55°C/W (junction-to-ambient) and R_θJC = 10°C/W (junction-to-case), indicating efficient heat transfer from die to case but strong dependence on PCB copper area for ambient dissipation. To maintain TJ ≤ 150°C under repeated surges, designers must provide ≥ 100 mm² of 2-oz copper connected to both leads - especially critical in enclosed industrial enclosures. The DO-214AB package lacks a thermal pad, so thermal vias and polygon pours are essential; insufficient copper will cause premature thermal runaway during multi-pulse stress.