Taiwan Semiconductor Corporation S5D R7G

Overview

S5D R7G from Taiwan Semiconductor is a 5 A, 200 V surface-mount silicon rectifier diode in DO-214AB (SMC) package, featuring glass-passivated junction, low forward voltage drop (max 1.15 V at 5 A), and high surge capability (100 A, 8.3 ms). It serves as a primary AC/DC conversion element in compact offline power supplies.

For engineers reviewing the S5D R7G datasheet, S5D R7G pinout, S5D R7G application, or S5D R7G equivalent, key selection criteria include repetitive peak reverse voltage (200 V), thermal resistance (13 °C/W junction-to-lead), reverse recovery time (1500 ns), moisture sensitivity level (J-STD-020 Level 1), and RoHS/halogen-free compliance.

Technical Context

The S5D R7G is a single-die, standard recovery rectifier optimized for cost-sensitive, medium-voltage switching power applications. Its 1500 ns reverse recovery time and 60 pF junction capacitance reflect trade-offs favoring low conduction loss over ultra-fast switching.

Designed for surface-mount assembly with matte tin-plated leads (J-STD-002 compliant), it operates across –55 °C to +150 °C junction temperature range and meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance requirements.

Key Specifications

Pinout & Package

Package: DO-214AB (SMC) - Surface-mount plastic package with cathode band marking, 0.210 g mass, UL 94V-0 rated molding compound, and JESD201 Class 2 whisker-resistant matte tin leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH5L06 and MBR5200F, the S5D R7G offers optimal balance of cost, thermal performance (13 °C/W), and surface-mount compatibility for mid-power industrial adapters-without requiring heatsinks or sacrificing moisture robustness (MSL Level 1).

Availability

S5D R7G is available at Aetrix Electronics and suitable for AC-DC adapters, LED drivers, industrial SMPS, and DC-DC converter inputs requiring stable component supply, long-lifecycle availability, and full traceability.

Supply support for S5D R7G 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 global power, automotive, and industrial markets since 1979.

The S5A–S5M series was developed to deliver high-reliability, cost-optimized general-purpose rectifiers for mainstream offline power conversion-emphasizing manufacturability, thermal robustness, and regulatory compliance.

FAQ

What is the maximum junction temperature rating for the S5D R7G?

The S5D R7G has a maximum junction temperature (T_J) of +150 °C and a minimum of –55 °C. This rating enables reliable operation in enclosed industrial enclosures and high-ambient lighting fixtures. Derating curves in the datasheet define safe operating current versus case temperature, and the 13 °C/W junction-to-lead thermal resistance supports effective heat transfer to PCB copper. The S5D R7G must be mounted on sufficient copper area to maintain T_J ≤ 150 °C under full load.

Does the S5D R7G meet RoHS and halogen-free requirements?

Yes, the S5D R7G is RoHS compliant and halogen-free per IEC 61249-2-21. Its matte tin-plated leads, glass-passivated die, and UL 94V-0 molding compound all conform to environmental regulations for consumer, industrial, and medical-adjacent applications. No exemptions are applied, and full material declarations are available upon request. The S5D R7G is suitable for export to EU, Japan, and other regulated markets requiring strict substance control.

What does the "R7G" suffix indicate in S5D R7G?

The "R7G" suffix in S5D R7G denotes Taiwan Semiconductor's internal date code and packaging variant: "R7" indicates week 7 of year 2023 (or 2033), and "G" specifies green compound (halogen-free molding material). It does not affect electrical specifications-S5D R7G shares identical absolute maximum ratings, electrical characteristics, and mechanical dimensions with standard S5D devices. All S5D R7G units are supplied in DO-214AB (SMC) package, 3,000 pcs per tape-and-reel.

Can the S5D R7G replace a 1N5408 in a legacy design?

No-the S5D R7G is not a direct replacement for the axial-lead 1N5408 (1 A, 1000 V). While both are silicon rectifiers, the S5D R7G is rated for 5 A continuous current and 200 V V_RRM, packaged in DO-214AB (SMC), and lacks the 1N5408's 1000 V rating. Substituting S5D R7G into a 1N5408 position risks reverse voltage failure. For surface-mount upgrades of 1N5408, consider TSC's S5M (1000 V) or ON Semiconductor's MUR5100CT.

What is the reverse recovery time (t_rr) of the S5D R7G and how does it impact circuit design?

The S5D R7G has a typical reverse recovery time (t_rr) of 1500 ns under IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A. This relatively slow recovery increases switching losses in high-frequency (>100 kHz) topologies and may require snubber networks to suppress voltage spikes. It is well-suited for 50–100 kHz SMPS where conduction loss dominates. Designers should verify EMI and efficiency using the S5D R7G's actual t_rr and 60 pF C_J in their specific layout.