Taiwan Semiconductor Corporation SRS1030H

Overview

SRS1030H from Taiwan Semiconductor is a 10A, 30V AEC-Q101-qualified Schottky barrier rectifier in TO-263AB (D2PAK) package, featuring 0.55V forward voltage at 5A/25°C, 120A surge capability, and guard ring overvoltage protection-used as freewheeling diode in automotive DC/DC converters.

For engineers reviewing the SRS1030H datasheet, SRS1030H pinout, SRS1030H application, or SRS1030H equivalent, key selection criteria include V_RRM=30V, I_F=10A, T_J max=125°C, R_θJC=2°C/W, and AEC-Q101 qualification for under-hood power conversion designs.

Technical Context

This dual-die Schottky rectifier operates with low conduction loss due to its 0.55V typical V_F at 5A and 25°C, enabling high-efficiency operation in low-voltage, high-frequency switching topologies. Its 120A non-repetitive surge rating supports transient load handling in automotive start-stop systems.

The TO-263AB package provides low thermal resistance (R_θJC = 2°C/W) and meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity-critical for reflow-compatible automated assembly in automotive production.

Key Specifications

Pinout & Package

Package: TO-263AB (D2PAK), surface-mount, single-anode/single-cathode configuration with exposed cathode tab for thermal and electrical connection.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Compared with VS-10BQ030-M3/45 and SB1030, the SRS1030H offers balanced trade-offs: guard ring-enhanced ruggedness for automotive transients, AEC-Q101 compliance, and competitive V_F, making it optimal for cost-sensitive, reliability-critical 24V automotive power stages.

Availability

SRS1030H is available at Aetrix Electronics and suitable for automotive DC/DC converters, reverse battery protection circuits, and LED headlamp drivers requiring stable component supply with AEC-Q101 assurance and TO-263AB thermal performance.

Supply support for SRS1030H 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 Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving automotive, industrial, and consumer markets since 1979.

The SRS1030H belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-reliability 12V/24V automotive power conversion where low V_F, surge resilience, and thermal robustness are critical.

FAQ

What is the maximum junction temperature rating for the SRS1030H?

The SRS1030H has a maximum junction temperature (T_J) rating of +125°C, validated under AEC-Q101 stress testing. This rating applies when operated within its absolute maximum ratings-including I_F ≤ 10A, V_RRM ≤ 30V, and case temperature maintained below limits defined by its R_θJC = 2°C/W thermal path. Derating is required above 25°C ambient.

Is the SRS1030H pin-compatible with other devices in the SRS10xxH series?

Yes, all SRS10xxH devices-including SRS1030H-share identical TO-263AB (D2PAK) packaging, pinout, and mechanical footprint. The only differences are V_RRM (20V to 150V) and corresponding V_F/I_R values; thus, SRS1030H can be substituted with SRS1040H or SRS1020H on the same PCB if voltage margin and loss targets permit.

Does the SRS1030H require a heatsink in typical automotive applications?

The SRS1030H does not require an external heatsink when mounted on ≥1 in² 2-oz copper with thermal vias, given its R_θJC = 2°C/W and typical power dissipation of <1.5W at 10A/0.55V. However, in sealed enclosures or ambient >85°C, a small heatsink or copper pour extension is recommended to maintain T_J < 125°C-verified using thermal simulation with SRS1030H-specific parameters.

What does the "H" suffix indicate in SRS1030H?

The "H" suffix in SRS1030H denotes Taiwan Semiconductor's halogen-free construction per IEC 61249-2-21, confirmed by material declarations and process validation. It also signifies compliance with RoHS Directive 2011/65/EU and J-STD-020 Level 1 moisture sensitivity-enabling lead-free reflow without pre-bake.

How is the guard ring feature implemented in the SRS1030H?

The SRS1030H integrates a planar guard ring structure around the active Schottky junction periphery. This diffusion-based termination extends the depletion region laterally, suppressing edge electric field crowding and raising the effective breakdown voltage-ensuring stable 30V V_RRM operation even under mechanical stress or contamination, as verified in AEC-Q101 HTRB testing.