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

Taiwan Semiconductor Corporation S8GCHM6G

Name: S8GCHM6G
Brand: Taiwan Semiconductor Corporation
SKU: S8GCHM6G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S8GCHM6G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AB, SMC

Datasheet:: S8GCHM6G.pdf

Description:: DIODE GEN PURP 400V 8A DO214AB

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Inventory:5,375

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Product details

Overview

S8GCHM6G from Taiwan Semiconductor is an AEC-Q101-qualified surface-mount silicon rectifier diode in DO-214AB (SMC) package, rated for 8 A average forward current, 400 V repetitive peak reverse voltage (V_RRM), and 200 A non-repetitive surge current (8.3 ms). It features glass-passivated junction, low 0.985 V forward voltage at 8 A/25°C, and is used in automotive DC-DC converters and lighting systems.

For engineers reviewing the S8GCHM6G datasheet, S8GCHM6G pinout, S8GCHM6G application, or S8GCHM6G equivalent, key selection criteria include its AEC-Q101 qualification, 150°C maximum junction temperature, 12.5°C/W junction-to-lead thermal resistance, moisture sensitivity level 1 compliance, and suitability for high-surge, high-reliability automotive power conversion.

Technical Context

This single-die standard recovery rectifier operates with a typical junction capacitance of 48 pF at 1 MHz and 4.0 V reverse bias, enabling stable performance in snubber and flyback circuits. Its reverse leakage remains ≤10 µA at 25°C and ≤250 µA at 125°C under rated V_RRM, supporting reliable operation across automotive temperature ranges.

The device uses matte tin-plated leads compliant with J-STD-002 solderability and meets JESD201 Class 2 whisker resistance. Its UL 94V-0 molded compound and cathode-band polarity marking ensure manufacturability and assembly traceability in automated SMT lines.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in DC-DC output rectification
I_F	8 A - Continuous average forward current at T_L = 115°C; determines steady-state power handling capability
I_FSM (8.3 ms)	200 A - Non-repetitive surge rating; supports inrush and fault-current robustness in automotive power rails
V_F @ 8 A, 25°C	≤0.985 V - Low conduction loss; reduces power dissipation and thermal stress in high-current paths
R_θJL	12.5 °C/W - Junction-to-lead thermal resistance; enables direct heatsinking via PCB copper pour or metal-core substrate
T_J max	+150°C - Maximum junction temperature; allows operation in under-hood environments without derating
MSL	Level 1 (per J-STD-020) - No floor life limitation; eliminates bake requirements before reflow

Pinout & Package

DO-214AB (SMC) surface-mount package: 2-terminal, single-anode/single-cathode configuration; cathode indicated by molded band; body dimensions 7.75 × 6.25 × 2.45 mm; matte tin-plated leads; UL 94V-0 molding compound.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Lead 1)	Forward current entry point	Connected to input/high-side node in rectifier topology; must handle full load current and surge
Cathode (Lead 2, banded)	Forward current exit / reverse blocking terminal	Connected to output/low-side node; polarity marking ensures correct orientation during automated placement

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan
Glass-passivated junction	Enhances long-term stability and moisture resistance vs. epoxy-passivated alternatives in humid environments
Low V_F (≤0.985 V @ 8 A)	Reduces conduction losses by ~15% compared to legacy 1.15 V rectifiers, lowering thermal design margin requirements
High I_FSM (200 A, 8.3 ms)	Withstands 10× rated current surges-critical for load dump and cold-crank transient immunity in 12 V systems
Halogen-free & RoHS compliant	Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally regulated supply chains

Applications

Automotive DC-DC Converters	LED Headlamp Drivers
Use Scenario: Secondary-side rectification in 12 V–48 V bidirectional DC-DC converters for 48 V mild-hybrid architectures. IC Role / Device Role / Timing Role: Power rectifier converting transformer secondary AC to regulated DC output; handles continuous 8 A and transient surges up to 200 A. Use Value: AEC-Q101 qualification and 150°C T_J max ensure reliability in engine bay mounting; low V_F minimizes heat generation near sensitive control ICs.	Use Scenario: Constant-current LED driver output stage in adaptive front-lighting systems (AFS). IC Role / Device Role / Timing Role: Output rectifier in buck-derived current-source topology; conducts pulsed LED current with minimal ripple. Use Value: 48 pF junction capacitance limits switching noise coupling; MSL Level 1 enables zero-defect SMT assembly without pre-bake delays.
Snubber Networks	Industrial Power Supplies
Use Scenario: RC snubber across MOSFET drains in flyback and forward converters to suppress voltage spikes. IC Role / Device Role / Timing Role: Fast-recovery clamping diode absorbing inductive energy during switch turn-off. Use Value: Glass-passivated junction withstands repeated high-dV/dt stress; 400 V V_RRM provides 2× safety margin over 200 V rail transients.	Use Scenario: Input bridge or output rectification in DIN-rail mounted 24 V industrial PSUs for PLCs and HMIs. IC Role / Device Role / Timing Role: Primary rectifier handling continuous 8 A load with intermittent 200 A surges during motor startup. Use Value: R_θJL = 12.5 °C/W allows direct thermal coupling to copper pour; DO-214AB footprint ensures compatibility with legacy layouts.

Automotive DC-DC Converters

LED Headlamp Drivers

Use Scenario: Secondary-side rectification in 12 V–48 V bidirectional DC-DC converters for 48 V mild-hybrid architectures.

IC Role / Device Role / Timing Role: Power rectifier converting transformer secondary AC to regulated DC output; handles continuous 8 A and transient surges up to 200 A.

Use Value: AEC-Q101 qualification and 150°C T_J max ensure reliability in engine bay mounting; low V_F minimizes heat generation near sensitive control ICs.

Use Scenario: Constant-current LED driver output stage in adaptive front-lighting systems (AFS).

IC Role / Device Role / Timing Role: Output rectifier in buck-derived current-source topology; conducts pulsed LED current with minimal ripple.

Use Value: 48 pF junction capacitance limits switching noise coupling; MSL Level 1 enables zero-defect SMT assembly without pre-bake delays.

Snubber Networks

Industrial Power Supplies

Use Scenario: RC snubber across MOSFET drains in flyback and forward converters to suppress voltage spikes.

IC Role / Device Role / Timing Role: Fast-recovery clamping diode absorbing inductive energy during switch turn-off.

Use Value: Glass-passivated junction withstands repeated high-dV/dt stress; 400 V V_RRM provides 2× safety margin over 200 V rail transients.

Use Scenario: Input bridge or output rectification in DIN-rail mounted 24 V industrial PSUs for PLCs and HMIs.

IC Role / Device Role / Timing Role: Primary rectifier handling continuous 8 A load with intermittent 200 A surges during motor startup.

Use Value: R_θJL = 12.5 °C/W allows direct thermal coupling to copper pour; DO-214AB footprint ensures compatibility with legacy layouts.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VS-8EWH04FN-M3/45	400 V V_RRM, 8 A I_F, but TO-277A package (smaller footprint, higher R_θJA)	Higher thermal resistance (55°C/W) limits power density in compact designs	Prefer when board space is constrained and thermal management uses forced air
ON Semiconductor MUR840EG	400 V V_RRM, 8 A I_F, ultrafast recovery (t_rr = 50 ns vs. S8GCHM6G's ~2 µs standard recovery)	Better for high-frequency SMPS (>100 kHz); higher V_F (1.15 V) increases conduction loss	Choose for EMI-sensitive switchers; avoid where low V_F dominates efficiency goals

Compared with VS-8EWH04FN-M3/45 and MUR840EG, the S8GCHM6G delivers superior thermal performance in SMC packages and lower conduction loss than ultrafast alternatives-making it optimal for cost-sensitive, thermally demanding automotive and industrial rectification where switching frequency is ≤100 kHz.

Availability

S8GCHM6G is available at Aetrix Electronics and suitable for automotive DC-DC converters, LED headlamp drivers, and industrial power supplies requiring stable component supply, AEC-Q101 compliance, and long-lifecycle support.

Supply support for S8GCHM6G 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 S8GCHM6G belongs to TSC's AEC-Q101-qualified S8xCH rectifier family, designed specifically for high-reliability, high-surge automotive power conversion and industrial rectification where thermal robustness and manufacturing readiness are critical.

FAQ

What is the maximum junction temperature rating for the S8GCHM6G?

The S8GCHM6G has a maximum junction temperature (T_J) of +150°C, verified per AEC-Q101 stress testing. This rating allows uninterrupted operation in under-hood automotive environments and high-ambient industrial enclosures. The S8GCHM6G maintains specified electrical parameters up to this limit when thermal design respects its R_θJL = 12.5°C/W and R_θJA = 44.0°C/W ratings.

Is the S8GCHM6G pin-compatible with other devices in the S8xCH series?

Yes-the S8GCHM6G shares identical DO-214AB (SMC) package dimensions, lead pitch, and polarity marking with all S8xCH variants (S8JCH, S8KCH, S8MCH). The only difference is V_RRM: S8GCHM6G is rated for 400 V, while others range up to 1000 V. Layout reuse is fully supported; no PCB changes are required when substituting within the same voltage grade.

Does the S8GCHM6G meet automotive reliability standards?

Yes-the S8GCHM6G is explicitly qualified to AEC-Q101 Rev D for discrete semiconductors, covering stress tests including HTGB, H3TRB, TC, and ESD. Its glass-passivated junction, MSL Level 1 rating, and halogen-free construction further align with automotive manufacturing and environmental requirements. The S8GCHM6G is approved for use in car lighting, body control modules, and powertrain auxiliary systems.

What is the forward voltage drop of the S8GCHM6G at rated current?

The S8GCHM6G exhibits a maximum forward voltage (V_F) of 0.985 V at I_F = 8 A and T_J = 25°C, measured under 0.3 ms pulse conditions. At elevated temperatures (125°C), V_F decreases slightly due to semiconductor physics. This low V_F directly reduces conduction losses-e.g., 7.88 W vs. 9.2 W for a 1.15 V competitor-improving thermal margin in the S8GCHM6G design.

How is polarity identified on the S8GCHM6G package?

Polarity on the S8GCHM6G is indicated by a molded cathode band on the body end, aligned with Lead 2 per DO-214AB mechanical drawings. The marking "S8GC" appears adjacent to the band, confirming the 400 V variant. This unambiguous visual cue ensures correct orientation during automated pick-and-place and manual inspection-critical for preventing reverse-bias failure in the S8GCHM6G application.

S8GCHM6G 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

S8GCHM6G FAQ

1.How can I place an order for S8GCHM6G through Aetrix?

Please submit a Request for Quotation (RFQ) for S8GCHM6G 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 S8GCHM6G reliable?

The price and inventory of S8GCHM6G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S8GCHM6G is usually 5 days.

3.What payment methods are accepted for S8GCHM6G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S8GCHM6G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S8GCHM6G?

S8GCHM6G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S8GCHM6G 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 S8GCHM6G?

For technical support, including S8GCHM6G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S8GCHM6G requirements.

6.How does Aetrix verify that S8GCHM6G is sourced from the original manufacturer or authorized distributors?

All S8GCHM6G 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 S8GCHM6G meets industry standards.

7.What is the process for return or replacement of S8GCHM6G?

All S8GCHM6G units undergo pre-shipment inspection (PSI). If there is an issue with S8GCHM6G, 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 S8GCHM6G part is unused and in its original packaging.

Return procedure for S8GCHM6G:

1.Submit a request within 90 days.

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

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