Diodes Incorporated D5V0FA1B2WS-7

Overview

D5V0FA1B2WS from Diodes Incorporated is a bi-directional ultra-low-capacitance TVS diode designed for ESD protection of high-speed data lines, featuring 2.7 pF typical junction capacitance, 6.8 V minimum breakdown voltage, and ±30 kV IEC 61000-4-2 contact/air discharge rating-used in USB 2.0 interfaces and audio jack protection.

For engineers reviewing the D5V0FA1B2WS datasheet, D5V0FA1B2WS pinout, D5V0FA1B2WS application, or D5V0FA1B2WS equivalent, key selection criteria include sub-3 pF capacitance for signal integrity, 5 V working voltage compatibility with 3.3 V/5 V I/O rails, and SOD323 footprint suitability for space-constrained portable PCBs.

Technical Context

This device operates as a clamping-type transient voltage suppressor optimized for electrostatic discharge events on single-ended data lines. Its bi-directional structure enables symmetrical clamping above and below ground, with a 9.5 V max clamping voltage at 1 A and 20 V at 25 A (8/20 μs pulse), ensuring robust overvoltage suppression without forward conduction during normal operation.

The SOD323 package supports high-density routing with minimal parasitic capacitance, and its 500 °C/W thermal resistance (junction-to-ambient) requires careful PCB copper area design to sustain 250 mW continuous power dissipation under sustained leakage conditions.

Key Specifications

Pinout & Package

Package: SOD323 - surface-mount plastic package with matte tin-plated alloy 42 leadframe, moisture sensitivity level 1, UL 94V-0 rated molding compound, 0.004 g weight.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bi-directional ESD protection applications.

Compared with SP1003-01UTG and ESD5Z3.3T5G, D5V0FA1B2WS uniquely balances 5 V working voltage, 2.7 pF capacitance, and ±30 kV ESD rating in SOD323-making it optimal for USB 2.0 and mixed-voltage audio interfaces requiring both signal fidelity and robustness.

Availability

D5V0FA1B2WS is available at Aetrix Electronics and suitable for USB 2.0 interface protection, smartphone audio jack hardening, and industrial HMI touch panel I/O safeguarding requiring stable component supply across production lifecycles.

Supply support for D5V0FA1B2WS 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

This device belongs to Diodes' ESD Protection Diodes product line, engineered specifically for high-fidelity signal path protection in consumer and portable electronics where low capacitance and high ESD immunity are co-critical.

FAQ

What is the maximum clamping voltage of D5V0FA1B2WS at 25 A?

The maximum clamping voltage is 20 V under an 8/20 μs transient pulse at 25 A peak current, as specified in the Electrical Characteristics table. This value ensures protected circuitry remains below absolute maximum ratings during worst-case ESD events while maintaining low dynamic impedance.

Can D5V0FA1B2WS be used on 3.3 V logic lines?

Yes-it has a 5 V reverse working voltage (V_RWM) and 6.8 V minimum breakdown, providing sufficient margin above 3.3 V rail operation. Its 5 μA max leakage at 5 V ensures negligible loading on 3.3 V I/O, and the 2.7 pF capacitance avoids timing skew in GPIO or I²C lines.

Is the SOD323 package compatible with standard reflow profiles?

Yes-the device is qualified for lead-free reflow per J-STD-020, with a maximum soldering temperature of +260 °C for 10 seconds. Its moisture sensitivity level 1 allows floor life unlimited at ≤30 °C/60% RH, eliminating bake requirements prior to assembly.

Does D5V0FA1B2WS meet automotive qualification standards?

No-this part is not AEC-Q101 qualified. While Diodes offers automotive-grade variants in the same family, D5V0FA1B2WS is intended for commercial and industrial applications. For automotive use, consult Diodes' AEC-Q101-certified equivalents such as D5V0F4U1B2WS.