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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation S8GCHR7G

Name: S8GCHR7G
Brand: Taiwan Semiconductor Corporation
SKU: S8GCHR7G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S8GCHR7G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AB, SMC

Datasheet:: S8GCHR7G.pdf

Description:: DIODE GEN PURP 400V 8A DO214AB

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Inventory:9,657

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Product details

Overview

S8GCHR7G from Taiwan Semiconductor is a surface-mount silicon rectifier diode rated for 8 A average forward current and 400 V repetitive peak reverse voltage in a DO-214AB (SMC) package, featuring glass passivated junction, low forward voltage drop (≤0.985 V at 8 A), AEC-Q101 qualification, and high surge capability (200 A @ 8.3 ms) - used in automotive DC-DC converters and snubber circuits.

For engineers reviewing the S8GCHR7G datasheet, S8GCHR7G pinout, S8GCHR7G application, or S8GCHR7G equivalent, key selection considerations include its 400 V V_RRM, 12.5 °C/W junction-to-lead thermal resistance, moisture sensitivity level 1 rating, RoHS/halogen-free compliance, and suitability for automated SMT placement in harsh-environment automotive power stages.

Technical Context

This single-die standard recovery rectifier operates with a maximum junction temperature of 150 °C and supports continuous conduction in high-efficiency DC-DC conversion topologies. Its glass-passivated chip junction ensures stable reverse leakage (<10 µA at 25 °C) and robustness against humidity and thermal cycling.

The device exhibits a typical junction capacitance of 48 pF at 1 MHz and 4.0 V reverse bias, enabling predictable switching behavior in snubber networks. Thermal performance is defined by R_θJL = 12.5 °C/W and R_θJA = 44.0 °C/W, supporting reliable operation under sustained 8 A load with appropriate PCB copper area.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - Maximum non-repetitive reverse voltage before breakdown; defines safe operating range in 400 V bus applications.
I_F	8 A - Continuous average forward current at T_L = 75 °C; determines steady-state power handling in rectification paths.
I_FSM (8.3 ms)	200 A - Peak non-repetitive surge current; enables survival during line transients or inrush events in automotive systems.
V_F (8 A, 25 °C)	≤0.985 V - Forward voltage drop; directly impacts conduction loss and thermal design in high-current rectifiers.
R_θJL	12.5 °C/W - Junction-to-lead thermal resistance; critical for estimating die temperature rise above lead temperature in thermally constrained layouts.
Junction capacitance	48 pF @ 1 MHz, 4 V - Defines high-frequency impedance and snubber tuning requirements in switching circuits.
AEC-Q101 qualified	Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22-A110/A111.

Pinout & Package

Package: DO-214AB (SMC), molded plastic case with matte tin-plated leads, polarity indicated by cathode band, weight ≈ 0.270 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side of AC input or switch node; must handle full 8 A RMS and surge currents.
Cathode	Forward current exit point	Connected to output rail or filter capacitor; marked by visible band; carries same current as anode with minimal voltage offset.

Key Features

Feature	Design Value
Glass passivated junction	Enables stable long-term reverse leakage (<10 µA at 25 °C) and immunity to humidity-induced degradation in automotive under-hood environments.
AEC-Q101 qualification	Confirms compliance with automotive stress tests including HTGB, H3TRB, and mechanical shock - required for Tier-1 power module designs.
Moisture sensitivity level 1	Eliminates need for baking prior to reflow; supports direct use from sealed tape-and-reel packaging in standard SMT lines.
Low forward voltage (≤0.985 V)	Reduces conduction loss by ~15% vs. comparable 1.15 V diodes at 8 A, lowering thermal load on adjacent MOSFETs and heatsinks.
DO-214AB (SMC) package	Provides 44.0 °C/W junction-to-ambient thermal resistance with standard 1-in² 2-oz copper pad - enables compact layout without forced air cooling.

Applications

Automotive DC-DC Converter	Car Lighting Power Supply
Use Scenario: High-efficiency 12 V to 5 V/3.3 V buck-derived converter powering infotainment ECUs in passenger vehicles. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology, conducting during secondary-side conduction interval. Use Value: Low V_F minimizes power loss at 8 A load; AEC-Q101 qualification ensures reliability across -40 °C to +125 °C ambient.	Use Scenario: LED headlamp driver with PWM dimming and overvoltage protection in modern LED matrix systems. IC Role / Device Role / Timing Role: Freewheeling diode across inductive ballast or snubber path for transient suppression during LED current switching. Use Value: 200 A surge rating absorbs inductive kickback; 48 pF junction capacitance stabilizes snubber resonance frequency.
Snubber Network	Industrial AC-DC Front-End
Use Scenario: RC-D clamp snubber across MOSFET drain-source in 400 V industrial SMPS to limit dv/dt and absorb switching energy. IC Role / Device Role / Timing Role: Fast-recovery rectifier conducting only during MOSFET turn-off transient, clamping voltage spike. Use Value: 400 V V_RRM matches 400 V bus rating; glass passivation prevents parameter drift under repeated high-voltage stress.	Use Scenario: Input bridge rectifier stage in universal-input (85–265 VAC) industrial power supply feeding PFC controller. IC Role / Device Role / Timing Role: Single-phase full-wave rectifier converting AC line to unregulated DC bus, operating at 50/60 Hz with 8 A average current. Use Value: 150 °C max junction temperature allows operation in enclosed enclosures; halogen-free compound meets IEC 61249-2-21 for safety-critical equipment.

Automotive DC-DC Converter

Car Lighting Power Supply

Use Scenario: High-efficiency 12 V to 5 V/3.3 V buck-derived converter powering infotainment ECUs in passenger vehicles.

IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology, conducting during secondary-side conduction interval.

Use Value: Low V_F minimizes power loss at 8 A load; AEC-Q101 qualification ensures reliability across -40 °C to +125 °C ambient.

Use Scenario: LED headlamp driver with PWM dimming and overvoltage protection in modern LED matrix systems.

IC Role / Device Role / Timing Role: Freewheeling diode across inductive ballast or snubber path for transient suppression during LED current switching.

Use Value: 200 A surge rating absorbs inductive kickback; 48 pF junction capacitance stabilizes snubber resonance frequency.

Snubber Network

Industrial AC-DC Front-End

Use Scenario: RC-D clamp snubber across MOSFET drain-source in 400 V industrial SMPS to limit dv/dt and absorb switching energy.

IC Role / Device Role / Timing Role: Fast-recovery rectifier conducting only during MOSFET turn-off transient, clamping voltage spike.

Use Value: 400 V V_RRM matches 400 V bus rating; glass passivation prevents parameter drift under repeated high-voltage stress.

Use Scenario: Input bridge rectifier stage in universal-input (85–265 VAC) industrial power supply feeding PFC controller.

IC Role / Device Role / Timing Role: Single-phase full-wave rectifier converting AC line to unregulated DC bus, operating at 50/60 Hz with 8 A average current.

Use Value: 150 °C max junction temperature allows operation in enclosed enclosures; halogen-free compound meets IEC 61249-2-21 for safety-critical equipment.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH8R04DJF	400 V V_RRM, 8 A I_F, but fast recovery (t_rr = 35 ns); higher V_F (1.15 V typ.)	Better suited for high-frequency (>100 kHz) SMPS where reverse recovery loss dominates	Choose STTH8R04DJF when switching frequency exceeds 50 kHz and reverse recovery loss must be minimized.
VS-8EWH04FN-M3	400 V V_RRM, 8 A I_F, but TO-220AC package; R_θJA = 35 °C/W (with heatsink)	Requires through-hole mounting and external heatsink; not suitable for fully SMT automotive modules	Choose VS-8EWH04FN-M3 only if board space permits TO-220 footprint and thermal budget requires lower R_θJA.

Compared with STTH8R04DJF and VS-8EWH04FN-M3, the S8GCHR7G offers optimal balance of AEC-Q101 compliance, SMT compatibility, and thermal performance in DO-214AB - making it preferred for space-constrained, high-reliability automotive rectification where standard recovery speed is sufficient.

Availability

S8GCHR7G is available at Aetrix Electronics and suitable for automotive DC-DC converters, car lighting power supplies, and snubber networks requiring stable component supply with AEC-Q101 validation and RoHS/halogen-free compliance.

Supply support for S8GCHR7G 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 automotive, industrial, and consumer markets since 1979.

The S8GCH series belongs to TSC's AEC-Q101-qualified surface-mount rectifier product line, engineered specifically for high-reliability power conversion in automotive subsystems where thermal stability, surge robustness, and process consistency are critical.

FAQ

What is the maximum junction temperature rating for S8GCHR7G?

The S8GCHR7G has a maximum junction temperature (T_J) rating of +150 °C, verified per AEC-Q101 stress testing. This allows operation in under-hood automotive environments where ambient temperatures reach +125 °C, provided thermal design maintains junction temperature below this limit using the specified R_θJL = 12.5 °C/W and appropriate PCB copper area. The S8GCHR7G datasheet confirms this rating across all operating conditions.

Is S8GCHR7G suitable for use in automotive lighting applications?

Yes, the S8GCHR7G is explicitly qualified to AEC-Q101 and listed in the Applications section for car lighting. Its 400 V V_RRM, 200 A surge rating, and glass passivated junction make it suitable for freewheeling and snubber roles in LED driver circuits subject to load dump and inductive switching transients. The S8GCHR7G meets moisture sensitivity level 1, eliminating pre-bake requirements in SMT assembly for automotive lighting modules.

What does the 'R7G' suffix in S8GCHR7G indicate?

The 'R7G' suffix in S8GCHR7G denotes Taiwan Semiconductor's internal tape-and-reel packaging code: 'R7' specifies 3,000 units per reel, and 'G' indicates green molding compound compliant with RoHS and halogen-free standards per IEC 61249-2-21. This matches the ordering information in the official S8GCH datasheet (Version B2210), where 'S8xCH' denotes the base family and suffixes define packaging and environmental compliance.

How does the forward voltage of S8GCHR7G compare to similar 8 A rectifiers?

The S8GCHR7G has a maximum forward voltage of 0.985 V at 8 A and 25 °C, which is lower than many competing 8 A rectifiers such as the STTH8R04DJF (1.15 V typ.). This 0.165 V reduction lowers conduction loss by approximately 1.3 W at 8 A, directly improving thermal margin and efficiency in high-current automotive power rails. The S8GCHR7G achieves this while maintaining AEC-Q101 qualification and DO-214AB SMT compatibility.

Can S8GCHR7G replace S8GCH in existing designs?

Yes, S8GCHR7G is a direct replacement for S8GCH - both share identical electrical specifications, DO-214AB (SMC) package, pinout, and AEC-Q101 qualification. The 'R7G' suffix reflects updated packaging (3,000/reel, green compound), not functional change. Designers may migrate to S8GCHR7G without layout or schematic modification, and the S8GCHR7G maintains full backward compatibility with legacy S8GCH-based BOMs and qualification records.

S8GCHR7G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AB, SMC

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 400 V

Current - Average Rectified (Io):: 8A

Voltage - Forward (Vf) (Max) @ If:: 985 mV @ 8 A

Speed:: Standard Recovery >500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 10 µA @ 400 V

Capacitance @ Vr, F:: 48pF @ 4V, 1MHz

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AB (SMC)

Operating Temperature - Junction:: -55°C ~ 150°C

S8GCHR7G FAQ

1.How can I place an order for S8GCHR7G through Aetrix?

Please submit a Request for Quotation (RFQ) for S8GCHR7G on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for S8GCHR7G reliable?

The price and inventory of S8GCHR7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S8GCHR7G is usually 5 days.

3.What payment methods are accepted for S8GCHR7G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S8GCHR7G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S8GCHR7G?

S8GCHR7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S8GCHR7G order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for S8GCHR7G?

For technical support, including S8GCHR7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S8GCHR7G requirements.

6.How does Aetrix verify that S8GCHR7G is sourced from the original manufacturer or authorized distributors?

All S8GCHR7G products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that S8GCHR7G meets industry standards.

7.What is the process for return or replacement of S8GCHR7G?

All S8GCHR7G units undergo pre-shipment inspection (PSI). If there is an issue with S8GCHR7G, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The S8GCHR7G part is unused and in its original packaging.

Return procedure for S8GCHR7G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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