Diodes Incorporated D28V0H1U2P5Q-13

Overview

D28V0H1U2P5Q-13 from Diodes Incorporated is a unidirectional 28 V standoff transient voltage suppressor (TVS) diode in PowerDI5 package, rated for 1800 W peak pulse power (10/1000 µs), 41 A maximum peak pulse current, and clamping at 44 V under surge conditions. It protects automotive electronic circuits-such as body control modules and infotainment power rails-against ISO 7637-2 pulses 1, 2a, 2b, and 3, as well as IEC 61000-4-2/4/5 transients.

For engineers reviewing the D28V0H1U2P5Q-13 datasheet, D28V0H1U2P5Q-13 pinout, D28V0H1U2P5Q-13 application, or D28V0H1U2P5Q-13 equivalent, key selection criteria include clamping voltage (44 V), thermal resistance (R_θJC = 21 °C/W), AEC-Q101 qualification, IEC/ISO compliance, and PowerDI5 footprint compatibility with high-power automotive PCB layouts.

Technical Context

This TVS operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds 31 V (V_BR min), limiting transient energy via low differential resistance (0.45 Ω at 1 A). Its 28 V VRWM ensures compatibility with 24 V automotive systems while maintaining <100 nA leakage at standoff.

Thermally optimized for surface-mount use, it delivers 1300 mW steady-state dissipation on FR-4 with R_θJA = 90 °C/W and achieves robust ESD immunity (30 kV contact/air per IEC 61000-4-2) and 150 A non-repetitive forward surge rating (8.3 ms half-sine).

Key Specifications

Pinout & Package

Package: PowerDI5 - thermally enhanced surface-mount package with exposed cathode pad, UL 94V-0 molded compound, and matte tin–annealed copper leadframe. Dimensions: 3.966 mm × 6.504 mm × 1.10 mm (L × W × H), weight ≈ 0.093 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMAJ28A and SMCJ28A, D28V0H1U2P5Q-13 uniquely combines AEC-Q101 qualification, 1800 W surge capacity, PowerDI5's superior thermal performance (R_θJC = 21 °C/W), and compact 4.0 mm × 6.5 mm footprint-making it the only choice for space-constrained, high-reliability automotive power rail protection.

Availability

D28V0H1U2P5Q-13 is available at Aetrix Electronics and suitable for automotive body electronics, ADAS camera power conditioning, electric power steering subsystems, and infotainment head unit designs requiring stable component supply across extended production lifecycles.

Supply support for D28V0H1U2P5Q-13 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, specializing in high-reliability components for automotive, industrial, and computing markets.

This device belongs to Diodes' AEC-Q101-qualified PowerTVS™ family, engineered specifically for robust transient suppression in harsh automotive environments-including under-hood and chassis-mounted ECUs.

FAQ

What is the maximum clamping voltage of D28V0H1U2P5Q-13 at its rated peak pulse current?

The clamping voltage (V_CL) is guaranteed ≤44 V when subjected to 41 A peak pulse current (IPPM) under 10/1000 µs waveform conditions, as verified per Figure 4 and Table 3 in DS38969 Rev. 3–2. This value ensures downstream 45 V-rated ICs remain within safe operating limits during ISO 7637-2 Pulse 1 events.

Is D28V0H1U2P5Q-13 suitable for bidirectional transient protection?

No-it is a unidirectional TVS diode, designed only for DC power line protection with polarity-sensitive mounting (anode to line, cathode to ground). For bidirectional AC or data-line protection, Diodes' D28V0H1U2P5Q-13 must be replaced with a symmetric device such as the D28V0H1U2P5Q-13's complementary dual-diode variant or an explicitly bidirectional part like the D24V0H1U2P5Q series.

How does the PowerDI5 package improve thermal performance over SMA or SMC packages?

PowerDI5 features an exposed cathode pad that provides direct thermal conduction to PCB copper, achieving R_θJC = 21 °C/W-35% lower than SMC (32 °C/W) and 50% lower than SMA (42 °C/W). This allows sustained 1300 mW power dissipation on standard FR-4 without external heatsinks, critical for high-duty-cycle automotive transients.

Does D28V0H1U2P5Q-13 require derating at elevated ambient temperatures?

Yes-its peak pulse power rating decreases above +25 °C. At +85 °C, PPP is reduced to ~1200 W (per Figure 4 derating curve), and at +125 °C, to ~800 W. Designers must apply thermal modeling using R_θJA = 90 °C/W and board-specific copper area to ensure junction temperature stays ≤150 °C during worst-case surge repetition.