Taiwan Semiconductor Corporation S1DHR3G

Overview

S1DHR3G from Taiwan Semiconductor is a surface-mount silicon rectifier diode with 200 V repetitive peak reverse voltage (V_RRM), 1 A average forward current (I_F), and DO-214AC (SMA) package - used as a primary AC/DC input rectifier in compact offline power supplies for industrial sensors and LED drivers.

For engineers reviewing the S1DHR3G datasheet, S1DHR3G pinout, S1DHR3G application, or S1DHR3G equivalent, key selection criteria include its 1.1 V max forward voltage at 1 A, 50 µA max reverse leakage at 125°C, 1500 ns reverse recovery time, junction-to-lead thermal resistance of 27°C/W, and RoHS/halogen-free compliance for high-reliability embedded designs.

Technical Context

This single-die standard recovery rectifier operates with a glass-passivated PN junction, rated for continuous operation from –55°C to +175°C junction temperature. Its DO-214AC (SMA) package features matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.

The device exhibits 12 pF typical junction capacitance at 1 MHz and 4.0 V reverse bias, and delivers 40 A non-repetitive peak surge current (I_FSM) under 8.3 ms half-sine conditions - supporting robust transient handling in flyback and buck-derived topologies.

Key Specifications

Pinout & Package

DO-214AC (SMA) surface-mount package with axial lead configuration: two terminals, cathode indicated by molded band. No internal pins; terminals are anode (unmarked end) and cathode (banded end).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MUR120 and VS-1EH02-M3, the S1DHR3G offers optimal balance of low forward voltage, proven thermal performance in SMA packages, and cost-effective standard recovery behavior - making it preferred for fixed-frequency, thermally constrained, and EMI-sensitive industrial rectification.

Availability

S1DHR3G is available at Aetrix Electronics and suitable for industrial control power supplies, LED driver front-ends, and sensor module AC/DC conversion requiring stable component supply and long-lifecycle support.

Supply support for S1DHR3G 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 industrial, computing, and consumer markets since 1979.

The S1DHR3G belongs to TSC's S1x series of general-purpose surface-mount rectifiers - engineered for cost-sensitive, high-volume AC/DC front-end applications where reliability, manufacturability, and thermal robustness are prioritized over ultrafast switching.

FAQ

What is the maximum junction temperature rating for the S1DHR3G?

The S1DHR3G has a maximum junction temperature (T_J) of +175°C, enabling reliable operation in high-ambient environments such as enclosed industrial enclosures or LED driver housings. This rating is validated per absolute maximum ratings in the official TSC datasheet (Version S2102). Derating curves confirm usable current capacity down to 0.5 A at 125°C ambient with adequate PCB copper area. The S1DHR3G must be operated within this limit to ensure long-term reliability.

Is the S1DHR3G RoHS and halogen-free compliant?

Yes, the S1DHR3G is fully RoHS compliant per EU Directive 2011/65/EU and halogen-free per IEC 61249-2-21. These compliance statements are explicitly confirmed in the "Features" section of the TSC S1A–S1M datasheet (Version S2102). The device uses matte tin-plated leads and UL 94V-0 molding compound, satisfying environmental requirements for industrial and lighting applications without requiring special handling or exemptions.

What does the 'HR' in S1DHR3G signify?

The 'HR' in S1DHR3G is Taiwan Semiconductor's internal product suffix denoting tape-and-reel packaging ('R') and halogen-free construction ('H'), per TSC ordering nomenclature in the "Ordering Information" section of the S1A–S1M datasheet. It does not indicate high-reliability grade or extended temperature range. The base device remains the standard S1D rectifier with 200 V V_RRM; the S1DHR3G is functionally identical to S1D but supplied in 7,500-piece reels with halogen-free materials.

Can the S1DHR3G replace a 1N4007 in a new design?

The S1DHR3G can replace a 1N4007 in surface-mount designs requiring 200 V blocking and 1 A average current, but only if the PCB layout accommodates DO-214AC (SMA) instead of DO-41. Unlike the through-hole 1N4007, the S1DHR3G offers lower profile, automated placement compatibility, and superior thermal resistance (27°C/W vs. ~60°C/W for 1N4007). However, its 1500 ns t_rr is slower than the 1N4007's typical 30 µs, so verify no EMI or ringing issues arise in the target circuit.

What is the reverse recovery time (t_rr) specification for the S1DHR3G?

The S1DHR3G has a reverse recovery time (t_rr) of 1500 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A per the "Electrical Specifications" table in the TSC S1A–S1M datasheet (Version S2102). This value confirms its classification as a standard (not ultrafast) recovery rectifier. Designers should avoid using the S1DHR3G in topologies operating above 100 kHz or requiring zero-voltage switching, where faster t_rr is critical to minimize switching losses and noise.