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

Taiwan Semiconductor Corporation S15KCHM6G

Name: S15KCHM6G
Brand: Taiwan Semiconductor Corporation
SKU: S15KCHM6G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S15KCHM6G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AB, SMC

Datasheet:: S15KCHM6G.pdf

Description:: DIODE GEN PURP 800V 15A DO214AB

Quantity:: RFQ Add To RFQ list

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Inventory:3,716

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Product details

Overview

S15KCHM6G from Taiwan Semiconductor is a 15A, 800V surface-mount silicon rectifier diode in DO-214AB (SMC) package, featuring glass-passivated junction, 1.1V max forward voltage at 15A/25°C, 350A peak surge capability, and J-STD-020 Level 1 moisture sensitivity - used in freewheeling paths and switching-mode power supplies for telecom and computing systems.

For engineers reviewing the S15KCHM6G datasheet, S15KCHM6G pinout, S15KCHM6G application, or S15KCHM6G equivalent, key selection criteria include V_RRM = 800V, I_F = 15A continuous, R_θJL = 8°C/W thermal resistance, cathode-band polarity marking, and RoHS/halogen-free compliance per IEC 61249-2-21.

Technical Context

This single-die standard recovery rectifier operates with a maximum junction temperature of 150°C and supports repetitive reverse voltages up to 800V. Its glass-passivated chip junction ensures stable performance under thermal cycling and humidity exposure.

With 350A non-repetitive surge current rating (8.3ms half-sine), low 1.1V forward drop at rated DC current, and 93pF junction capacitance at 4V reverse bias, the S15KCHM6G balances conduction efficiency and switching behavior in medium-frequency SMPS freewheeling and output rectification.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	800 V - Maximum repetitive reverse voltage; defines safe blocking capability in DC-link or freewheeling applications
I_F	15 A - Continuous average forward current; determines heatsink sizing and PCB copper area requirements
I_FSM	350 A - Peak non-repetitive surge current (8.3ms); enables robustness against inrush and fault transients
V_F	≤1.1 V @ 15A, 25°C - Forward voltage drop directly impacts conduction loss and thermal design in high-current paths
R_θJL	8 °C/W - Junction-to-lead thermal resistance; critical for estimating die temperature rise under lead-mounted conditions
C_J	93 pF @ 1MHz, 4V - Junction capacitance affects high-frequency switching noise and snubber design

Pinout & Package

Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, cathode indicated by band, UL 94V-0 molding compound, weight ≈0.270g.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Lead 1)	Forward current entry point	Connected to lower-potential side (e.g., switch node or ground return) in freewheeling configuration
Cathode (Lead 2)	Forward current exit / reverse-blocking terminal	Marked with band; connects to higher-potential rail (e.g., output capacitor positive or DC bus)

Key Features

Feature	Design Value
Glass-passivated junction	Enables stable long-term reliability under humid environments and thermal stress without hermetic sealing
Moisture sensitivity level 1	Eliminates bake preconditioning before reflow; compatible with standard SMT assembly lines
RoHS and halogen-free compliance	Meets IEC 61249-2-21 and EU RoHS directives for environmentally constrained end equipment
High I_FSM/I_F ratio (23.3×)	Supports transient overload tolerance without derating in industrial power converters with variable load profiles

Applications

Telecom Power Supplies	Server VRMs
Use Scenario: Output rectification in 48V intermediate bus converters feeding baseband processing units. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck secondary-side rectification or as standalone output rectifier. Use Value: 15A continuous rating and 800V V_RRM support wide input range and transient overvoltage margin in telecom infrastructure.	Use Scenario: High-current, high-efficiency 12V-to-1V conversion in CPU/GPU voltage regulator modules. IC Role / Device Role / Timing Role: Secondary-side freewheeling diode in multiphase buck converters where synchronous FETs are not used. Use Value: Low 1.1V V_F minimizes conduction loss at 15A, reducing thermal load on compact PCB layouts.
Industrial Motor Drives	Renewable Energy Inverters
Use Scenario: DC-link clamping and regenerative braking path in 3-phase IGBT-based drives. IC Role / Device Role / Timing Role: Snubber or clamp diode handling bidirectional energy flow during switching transitions. Use Value: 350A I_FSM withstands motor back-EMF spikes and short-circuit currents without failure.	Use Scenario: PV string-level DC optimization and microinverter output stage rectification. IC Role / Device Role / Timing Role: Isolation barrier output rectifier converting high-frequency AC from transformer secondary to DC bus. Use Value: 150°C max junction temperature and 8°C/W R_θJL enable operation in unventilated outdoor enclosures with ambient up to 85°C.

Telecom Power Supplies

Server VRMs

Use Scenario: Output rectification in 48V intermediate bus converters feeding baseband processing units.

IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck secondary-side rectification or as standalone output rectifier.

Use Value: 15A continuous rating and 800V V_RRM support wide input range and transient overvoltage margin in telecom infrastructure.

Use Scenario: High-current, high-efficiency 12V-to-1V conversion in CPU/GPU voltage regulator modules.

IC Role / Device Role / Timing Role: Secondary-side freewheeling diode in multiphase buck converters where synchronous FETs are not used.

Use Value: Low 1.1V V_F minimizes conduction loss at 15A, reducing thermal load on compact PCB layouts.

Industrial Motor Drives

Renewable Energy Inverters

Use Scenario: DC-link clamping and regenerative braking path in 3-phase IGBT-based drives.

IC Role / Device Role / Timing Role: Snubber or clamp diode handling bidirectional energy flow during switching transitions.

Use Value: 350A I_FSM withstands motor back-EMF spikes and short-circuit currents without failure.

Use Scenario: PV string-level DC optimization and microinverter output stage rectification.

IC Role / Device Role / Timing Role: Isolation barrier output rectifier converting high-frequency AC from transformer secondary to DC bus.

Use Value: 150°C max junction temperature and 8°C/W R_θJL enable operation in unventilated outdoor enclosures with ambient up to 85°C.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VS-15EWH08-M3	V_RRM = 800V, I_F = 15A, but TO-220AC package (through-hole), R_θJA = 35°C/W vs. S15KCHM6G's 44°C/W	Requires PCB through-hole mounting and larger board area; better natural convection cooling	Select when mechanical mounting stability or legacy through-hole compatibility is required
ON Semiconductor MUR1580CT	Ultrafast recovery (t_rr ≈ 75ns vs. standard recovery >1µs), dual common-cathode configuration, same DO-214AB package	Better suited for high-frequency (>100kHz) PFC stages; higher cost and EMI filtering complexity	Choose only if fast recovery is mandatory and layout allows dual-diode footprint

Compared with VS-15EWH08-M3 and MUR1580CT, the S15KCHM6G offers optimal balance of surface-mount compatibility, surge robustness, and thermal performance in cost-sensitive 50–100kHz SMPS designs where standard recovery speed suffices.

Availability

S15KCHM6G is available at Aetrix Electronics and suitable for telecom power supplies, server VRMs, industrial motor drives, and renewable energy inverters requiring stable component supply, full traceability, and long-lifecycle support.

Supply support for S15KCHM6G 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 telecom markets since 1979.

The S15GC–S15MC series was developed specifically for high-current, surface-mount rectification in space-constrained power conversion systems demanding reliability, RoHS compliance, and J-STD-020 Level 1 process compatibility.

FAQ

What is the maximum junction temperature rating for S15KCHM6G?

The S15KCHM6G has a maximum junction temperature (T_J) of +150°C, verified per absolute maximum ratings table. This rating enables operation in high-ambient environments such as enclosed telecom power modules or industrial drive cabinets. Derating curves in the datasheet define allowable I_F reduction above 25°C ambient. Thermal design must account for R_θJL = 8°C/W and R_θJA = 44°C/W under standard JEDEC test conditions.

Does S15KCHM6G have a specified reverse recovery time (t_rr)?

No, the S15KCHM6G is a standard recovery rectifier and does not specify reverse recovery time (t_rr) in its datasheet. It is characterized for use in applications operating below 100kHz, where recovery losses are secondary to conduction losses. For t_rr-critical designs (e.g., PFC stages), alternatives like MUR1580CT should be evaluated instead of S15KCHM6G.

What does the 'HM6G' suffix in S15KCHM6G indicate?

The 'HM6G' suffix in S15KCHM6G denotes Taiwan Semiconductor's internal packaging and environmental code: 'H' = halogen-free, 'M' = green molding compound (UL 94V-0), '6' = tape-and-reel packing (3,000 pcs/reel), and 'G' = RoHS-compliant finish. This matches the ordering code structure defined in the datasheet's "Ordering Information" section.

Can S15KCHM6G replace S15KC in existing designs?

Yes, S15KCHM6G is functionally identical to S15KC - both share identical electrical specs (V_RRM = 800V, I_F = 15A), DO-214AB package, and thermal performance. The HM6G suffix adds halogen-free and enhanced environmental compliance but does not alter pinout, footprint, or electrical behavior. No layout or firmware changes are needed for drop-in replacement.

Is S15KCHM6G suitable for automotive applications?

The S15KCHM6G is not AEC-Q101 qualified and is not recommended for automotive safety-critical systems. While it meets industrial temperature range (−55°C to +150°C) and RoHS/halogen-free requirements, Taiwan Semiconductor does not certify this part for automotive use. For automotive-grade rectifiers, consult TSC's AEC-Q101-qualified S15xQ series or equivalent qualified alternatives.

S15KCHM6G 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):: 800 V

Current - Average Rectified (Io):: 15A

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 15 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 1 µA @ 800 V

Capacitance @ Vr, F:: 93pF @ 4V, 1MHz

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

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

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

S15KCHM6G FAQ

1.How can I place an order for S15KCHM6G through Aetrix?

Please submit a Request for Quotation (RFQ) for S15KCHM6G 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 S15KCHM6G reliable?

The price and inventory of S15KCHM6G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S15KCHM6G is usually 5 days.

3.What payment methods are accepted for S15KCHM6G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S15KCHM6G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S15KCHM6G?

S15KCHM6G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S15KCHM6G 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 S15KCHM6G?

For technical support, including S15KCHM6G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S15KCHM6G requirements.

6.How does Aetrix verify that S15KCHM6G is sourced from the original manufacturer or authorized distributors?

All S15KCHM6G 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 S15KCHM6G meets industry standards.

7.What is the process for return or replacement of S15KCHM6G?

All S15KCHM6G units undergo pre-shipment inspection (PSI). If there is an issue with S15KCHM6G, 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 S15KCHM6G part is unused and in its original packaging.

Return procedure for S15KCHM6G:

1.Submit a request within 90 days.

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

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