NXP Semiconductors PTVS12VZ1USK315

Overview

PTVS12VZ1USK from Nexperia is a unidirectional transient voltage suppressor (TVS) diode in a leadless DSN1608-2 (SOD964) package, designed for ESD and surge protection of low-voltage signal/power lines in space-constrained mobile applications. It delivers 12 V reverse standoff voltage, 65 A peak pulse current (8/20 µs), and clamps to ≤29 V at that stress level, with dynamic resistance of 0.11 Ω and leakage <0.1 nA at 12 V.

For engineers reviewing the PTVS12VZ1USK datasheet, PTVS12VZ1USK pinout, PTVS12VZ1USK application, or PTVS12VZ1USK equivalent, key selection criteria include its ultra-low 0.29 mm height, 430 pF capacitance at 0 V, IEC 61000-4-2 ±30 kV ESD rating, and suitability for USB, SIM card, and antenna line protection in smartphones and wearables.

Technical Context

The PTVS12VZ1USK operates as a unidirectional clamping device, conducting only during positive overvoltage transients on the anode-to-cathode path. Its breakdown voltage is specified at 13.3–15.4 V (10 mA test current), ensuring reliable turn-on before downstream IC damage while maintaining tight clamping at 24.9–29 V under 65 A 8/20 µs surges.

It complies with IEC 61000-4-5 (surge) and IEC 61000-4-2 (ESD), with verified clamping performance down to 30 ns - delivering 15.5 V clamping for +8 kV ESD and −2 V for −8 kV ESD. Its SOD964 footprint supports high-density PCB layouts without compromising thermal or electrical robustness.

Key Specifications

Pinout & Package

PTVS12VZ1USK uses the DSN1608-2 (SOD964) leadless surface-mount package: 1.6 mm × 0.8 mm × 0.29 mm body, 0.6 mm pitch, with cathode indicated by a marking bar on the top surface.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar TVS diode applications.

Compared with SMAJ12A and TPD2E001DRYR, PTVS12VZ1USK uniquely balances 12 V standoff, 65 A surge capability, and sub-0.3 mm height - making it the only option qualified for single-line, high-energy, ultra-thin mobile front-end protection without sacrificing PCB real estate.

Availability

PTVS12VZ1USK is available at Aetrix Electronics and suitable for mobile handset design, wearable sensor node development, and IoT module production requiring stable component supply, consistent parametric performance, and long-term lifecycle support.

Supply support for PTVS12VZ1USK 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability essential semiconductors - including logic, discrete, and MOSFETs - with leadership in efficiency, miniaturization, and ESD robustness.

The PTVS12VZ1USK belongs to Nexperia's ultra-small-package TVS portfolio, engineered specifically for next-generation mobile and portable electronics where board area, thickness, and system-level ESD compliance are non-negotiable.

FAQ

What is the maximum clamping voltage of the PTVS12VZ1USK under a 65 A 8/20 µs surge?

The PTVS12VZ1USK clamps to a maximum of 29 V under a 65 A 8/20 µs transient pulse, as specified in Table 6 of the official Nexperia datasheet. This value represents the peak voltage measured across the device terminals during standardized surge testing and ensures compatibility with 3.3 V and 5 V logic families in mobile applications. The PTVS12VZ1USK achieves this with a dynamic resistance of just 0.11 Ω, minimizing voltage overshoot beyond the clamping plateau.

Does the PTVS12VZ1USK support bidirectional ESD protection?

No, the PTVS12VZ1USK is a unidirectional TVS diode - it conducts only when the cathode (pin 1) is driven positive relative to the anode (pin 2). It provides no clamping for negative transients on the protected line. For bidirectional protection, a separate device such as the PTVS12VS1USK (symmetrical variant) or a dual-diode array would be required. The PTVS12VZ1USK is optimized for DC-biased lines like power rails or single-polarity signal paths.

What is the marking code printed on the PTVS12VZ1USK package?

The PTVS12VZ1USK is marked with the code "Z5" on its top surface, as documented in Table 4 of the Nexperia datasheet. This two-character marking is laser-etched onto the ceramic body of the DSN1608-2 (SOD964) package and serves as the primary visual identifier for traceability and assembly verification. The cathode is indicated by a bar adjacent to pin 1, consistent with industry-standard polarity marking conventions.

Can the PTVS12VZ1USK be used in automotive infotainment systems?

The PTVS12VZ1USK is not automotive-qualified per Nexperia's legal disclaimers - it has not been tested or certified to AEC-Q200 or ISO 16750 standards. While its electrical specs may appear suitable for certain 12 V rail protection tasks, its qualification status limits use to consumer and industrial applications only. For automotive infotainment, a formally qualified alternative such as the PTVS12VU1USK (AEC-Q200 Grade 2) must be selected instead of the PTVS12VZ1USK.

How does the 430 pF capacitance of the PTVS12VZ1USK affect high-speed signal integrity?

The PTVS12VZ1USK's typical capacitance of 430 pF at 1 MHz and 0 V is appropriate for interfaces up to ~10 Mbps (e.g., UART, I²C, SIM I/O) but exceeds recommended limits for USB 2.0 (max ~15 pF) or MIPI D-PHY (max ~3 pF) unless placed selectively on non-high-speed lines like VBUS or reset. In practice, the PTVS12VZ1USK is deployed on lower-bandwidth mobile control lines - not differential high-speed pairs - where its capacitance introduces negligible jitter or rise-time degradation. Its role is defined by placement, not universal signal compatibility.