Diodes Incorporated D24V0H2U3SO-7

Overview

D24V0H2U3SO from Diodes Incorporated is a dual-channel unidirectional ESD protection diode designed for data line and interface port protection in portable electronics and communication systems. It features 24 V reverse standoff voltage, 26.7 V minimum breakdown voltage, 30 pF typical input capacitance, 4 A peak pulse current (8/20 µs), and clamps positive transients to ≤43 V at 4 A - enabling robust IEC 61000-4-2 ±30 kV contact/air discharge protection.

For engineers reviewing the D24V0H2U3SO datasheet, D24V0H2U3SO pinout, D24V0H2U3SO application, or D24V0H2U3SO equivalent, key selection criteria include channel isolation, low clamping voltage under high IPP, ultra-low leakage (<1 µA at VRWM), bidirectional configuration capability via pin 1–2 connection, and SOT23 footprint compatibility with space-constrained USB, HDMI, and audio jack interfaces.

Technical Context

The D24V0H2U3SO implements two independent unidirectional TVS structures in a single SOT23-3 package, each configured as an anode-to-rail clamp for positive transients and cathode-to-ground for negative transients. Its 30 pF typical junction capacitance ensures minimal signal distortion on high-speed lines up to ~100 Mbps.

It operates within –55 °C to +125 °C and delivers 300 W peak pulse power per channel under standardized 8/20 µs waveform conditions. The device achieves ±30 kV ESD immunity per IEC 61000-4-2 without requiring external series impedance, relying on intrinsic silicon avalanche response rather than polymer or multilayer varistor mechanisms.

Key Specifications

Pinout & Package

Package: SOT23-3, surface-mount plastic package with matte tin-plated alloy 42 leadframe; moisture sensitivity level 1 per J-STD-020; UL 94V-0 rated molding compound; weight ≈ 0.009 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMAJ24A and TPD2E001DRYR, the D24V0H2U3SO uniquely balances 24 V standoff, dual-channel integration in SOT23-3, and 30 pF capacitance - making it optimal for mixed-signal ports where space, voltage range, and speed must coexist.

Availability

D24V0H2U3SO is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI hot-plug circuit safeguarding, and smartphone audio jack ESD hardening requiring stable component supply across high-mix production runs.

Supply support for D24V0H2U3SO 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.

The D24V0H2U3SO belongs to Diodes' ESD Protection Diodes product line, engineered specifically for compact, high-reliability transient suppression in portable and interface-critical applications - emphasizing low capacitance, precise voltage thresholds, and automotive-grade process consistency.

FAQ

What is the maximum clamping voltage of D24V0H2U3SO at 4 A surge current?

The D24V0H2U3SO clamps to a maximum of 43 V under 4 A, 8/20 µs surge conditions per Figure 1 in DS43688 Rev. 1–2. This value is measured at the device terminals with specified PCB layout and represents worst-case voltage exposure for downstream components during full-rated ESD events.

Can D24V0H2U3SO be used for bidirectional ESD protection?

Yes - by connecting Pin 1 and Pin 2 together and routing the protected line to that node, the device functions as a bidirectional suppressor. In this configuration, one channel handles positive transients to VCC and the other handles negative transients to GND, achieving symmetrical ±30 kV IEC 61000-4-2 protection.

Is D24V0H2U3SO qualified for automotive applications?

No - the D24V0H2U3SO is not AEC-Q200 qualified. Diodes states that automotive-grade variants require specific change control, PPAP capability, and IATF 16949 manufacturing; users needing automotive qualification must contact Diodes directly for approved alternatives such as the D24V0L2U3SO-A or AP7215xx series.

What is the thermal resistance (R_θJA) of D24V0H2U3SO on a standard FR-4 PCB?

The junction-to-ambient thermal resistance is 500 °C/W when mounted on a 2 oz copper FR-4 PCB using the recommended pad layout from Diodes' package outline documentation. This value assumes no additional copper pour or thermal vias; adding thermal relief improves dissipation but requires layout validation.