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

Taiwan Semiconductor Corporation S15KCHR7G

Name: S15KCHR7G
Brand: Taiwan Semiconductor Corporation
SKU: S15KCHR7G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S15KCHR7G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AB, SMC

Datasheet:: S15KCHR7G.pdf

Description:: DIODE GEN PURP 800V 15A DO214AB

Quantity:: RFQ Add To RFQ list

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Inventory:4,756

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Product details

Overview

S15KCHR7G from Taiwan Semiconductor is a surface-mount silicon rectifier diode with 800 V repetitive peak reverse voltage (V_RRM), 15 A average forward current (I_F), and 350 A non-repetitive surge capability (I_FSM); it features glass-passivated junction, low 1.1 V forward voltage at 15 A, and DO-214AB (SMC) package for use in switching-mode power supplies and freewheeling circuits.

For engineers reviewing the S15KCHR7G datasheet, S15KCHR7G pinout, S15KCHR7G application, or S15KCHR7G equivalent, key selection criteria include verified V_RRM = 800 V, thermal resistance R_θJL = 8 °C/W, moisture sensitivity level 1, RoHS/halogen-free compliance, and JESD201 Class 2 whisker resistance.

Technical Context

This single-die standard recovery rectifier operates with a maximum junction temperature of 150 °C and supports continuous conduction in high-frequency switching converters. Its glass-passivated chip junction ensures stable reverse leakage (<1 µA at 25 °C, <250 µA at 125 °C) and robust surge immunity under 8.3 ms half-sine transients.

The DO-214AB (SMC) package provides mechanical ruggedness, UL 94V-0 mold compound, matte tin-plated leads compliant with J-STD-002, and polarity indication via cathode band - all optimized for automated SMT placement and reflow reliability.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	800 V - Maximum repetitive reverse blocking voltage; defines safe operating range in DC-link and output rectification stages
I_F	15 A - Continuous average forward current at T_A = 75 °C; determines heatsink sizing in sustained-load applications
I_FSM	350 A - Peak non-repetitive surge current (8.3 ms sine); enables survival during startup inrush or fault conditions
V_F	1.1 V max @ 15 A, 25 °C - Low conduction loss directly reduces power dissipation and improves system efficiency
R_θJL	8 °C/W - Junction-to-lead thermal resistance; enables direct thermal path to PCB copper for passive cooling
C_J	93 pF @ 1 MHz, 4 V - Junction capacitance impacts high-frequency switching noise and snubber design

Pinout & Package

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

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side (e.g., switch node or transformer secondary center-tap)
Cathode	Forward current exit point	Connected to higher-potential rail (e.g., output capacitor positive or DC bus); marked by band

Key Features

Feature	Design Value
Glass-passivated junction	Enhances long-term reliability under humidity and thermal cycling; eliminates need for conformal coating in industrial environments
Moisture sensitivity level 1	Zero bake requirement before reflow; compatible with standard SMT assembly lines without dry-pack handling
JESD201 Class 2 whisker resistance	Prevents tin whisker growth under thermal stress; critical for automotive and telecom infrastructure longevity
RoHS and halogen-free compliance	Meets IEC 61249-2-21 and EU RoHS directives; supports green manufacturing and end-of-life recycling

Applications

Server PSU Output Rectification	Industrial SMPS Freewheeling
Use Scenario: High-efficiency 48 V output stage in 1U server power supplies operating at 100–300 kHz switching frequency. IC Role / Device Role / Timing Role: Primary output rectifier conducting continuous 15 A DC load with minimal conduction loss. Use Value: 1.1 V V_F reduces conduction loss by ~16.5 W vs. legacy 1.3 V diodes, lowering heatsink requirements and improving power density.	Use Scenario: Freewheeling path in 3-phase motor drive inverters with IGBTs switching at 8–20 kHz. IC Role / Device Role / Timing Role: Clamp inductive energy during IGBT turn-off; handles repetitive 350 A surge peaks. Use Value: 350 A I_FSM withstands worst-case motor stall currents without failure, eliminating need for parallel devices.
Telecom DC/DC Converter	Renewable Energy Inverter Auxiliary Supply
Use Scenario: Secondary-side rectification in isolated 12 V/20 A telecom brick modules meeting NEBS Level 3 vibration and thermal specs. IC Role / Device Role / Timing Role: Standard recovery rectifier delivering regulated 12 V to baseband processor and FPGA power rails. Use Value: R_θJL = 8 °C/W enables direct mounting on thick copper pour, achieving T_J < 120 °C without forced air.	Use Scenario: Auxiliary 24 V supply rectification in solar string inverters exposed to outdoor ambient up to 85 °C. IC Role / Device Role / Timing Role: Input-stage rectifier converting transformer-coupled AC to DC for control circuitry power supply. Use Value: 150 °C T_JMAX and -55 °C to +150 °C storage range ensure operation across desert and arctic deployments.

Server PSU Output Rectification

Industrial SMPS Freewheeling

Use Scenario: High-efficiency 48 V output stage in 1U server power supplies operating at 100–300 kHz switching frequency.

IC Role / Device Role / Timing Role: Primary output rectifier conducting continuous 15 A DC load with minimal conduction loss.

Use Value: 1.1 V V_F reduces conduction loss by ~16.5 W vs. legacy 1.3 V diodes, lowering heatsink requirements and improving power density.

Use Scenario: Freewheeling path in 3-phase motor drive inverters with IGBTs switching at 8–20 kHz.

IC Role / Device Role / Timing Role: Clamp inductive energy during IGBT turn-off; handles repetitive 350 A surge peaks.

Use Value: 350 A I_FSM withstands worst-case motor stall currents without failure, eliminating need for parallel devices.

Telecom DC/DC Converter

Renewable Energy Inverter Auxiliary Supply

Use Scenario: Secondary-side rectification in isolated 12 V/20 A telecom brick modules meeting NEBS Level 3 vibration and thermal specs.

IC Role / Device Role / Timing Role: Standard recovery rectifier delivering regulated 12 V to baseband processor and FPGA power rails.

Use Value: R_θJL = 8 °C/W enables direct mounting on thick copper pour, achieving T_J < 120 °C without forced air.

Use Scenario: Auxiliary 24 V supply rectification in solar string inverters exposed to outdoor ambient up to 85 °C.

IC Role / Device Role / Timing Role: Input-stage rectifier converting transformer-coupled AC to DC for control circuitry power supply.

Use Value: 150 °C T_JMAX and -55 °C to +150 °C storage range ensure operation across desert and arctic deployments.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1508D	V_RRM = 800 V, I_F = 15 A, but faster recovery (t_rr = 75 ns vs. standard recovery > 1 µs); higher V_F = 1.7 V	Better suited for high-frequency PFC stages where reverse recovery loss dominates; less optimal for low-V_F-driven efficiency targets	Select S15KCHR7G when conduction loss minimization and cost-sensitive industrial designs are prioritized over ultra-fast switching
ON Semi MUR1580CT	Dual common-cathode configuration (2×15 A), same V_RRM; requires board redesign due to different pinout and footprint	Enables dual-output or interleaved converter topologies; not drop-in replaceable for single-diode layouts	Choose S15KCHR7G for single-channel freewheeling or output rectification where space and BOM count are constrained

Compared with STTH1508D and MUR1580CT, the S15KCHR7G delivers lowest conduction loss in fixed-frequency SMPS and offers simplest layout integration in single-diode configurations - making it optimal for cost- and thermally sensitive industrial and telecom power systems.

Availability

S15KCHR7G is available at Aetrix Electronics and suitable for server power supplies, industrial motor drives, telecom DC/DC converters, and renewable energy auxiliary supplies requiring stable component supply, long-lifecycle support, and traceable sourcing.

Supply support for S15KCHR7G 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, specializing in power rectifiers, TVS diodes, MOSFETs, and ICs since 1979.

The S15GC–S15MC series was designed specifically for high-current, medium-voltage surface-mount rectification in industrial-grade switching power supplies - balancing surge robustness, thermal performance, and automated assembly compatibility.

FAQ

What is the maximum junction temperature rating for the S15KCHR7G?

The S15KCHR7G has a maximum junction temperature (T_J) rating of +150 °C, with a storage temperature range of –55 °C to +150 °C. This allows reliable operation in demanding industrial and telecom environments where ambient temperatures exceed 70 °C. The device's R_θJL = 8 °C/W enables effective heat transfer to the PCB, helping maintain S15KCHR7G junction temperature within limits under full 15 A load.

Does the S15KCHR7G meet RoHS and halogen-free requirements?

Yes, the S15KCHR7G is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound, lead finish, and internal construction exclude restricted substances including lead, cadmium, mercury, hexavalent chromium, PBB, PBDE, and chlorine/bromine-based flame retardants - ensuring compliance with global environmental regulations and facilitating end-of-life recycling.

What does the "K" in S15KCHR7G indicate?

The "K" in S15KCHR7G denotes the 800 V repetitive peak reverse voltage (V_RRM) rating within the S15GC–S15MC family. Per Taiwan Semiconductor's ordering code, G = 400 V, J = 600 V, K = 800 V, and M = 1000 V. The "HR7G" suffix indicates tape-and-reel packaging (3,000 units per reel) and green compound, consistent with S15KCHR7G's production version C2102.

Is the S15KCHR7G suitable for automated SMT assembly?

Yes, the S15KCHR7G is explicitly designed for automated placement. It meets moisture sensitivity level 1 (per J-STD-020), requires no pre-bake, and features matte tin-plated leads solderable per J-STD-002. Its DO-214AB (SMC) package geometry and cathode band marking support high-yield pick-and-place and AOI inspection - confirmed in Taiwan Semiconductor's mechanical data and application notes for S15KCHR7G.

How does the S15KCHR7G compare to Schottky rectifiers in terms of forward voltage and reverse leakage?

The S15KCHR7G has a typical forward voltage of ≤1.1 V at 15 A, higher than most Schottky rectifiers (e.g., 0.5–0.8 V), but its reverse leakage is significantly lower: ≤1 µA at 25 °C and ≤250 µA at 125 °C. This makes S15KCHR7G preferable over Schottkys in high-temperature, high-V_RRM applications where leakage-induced losses or thermal runaway would otherwise dominate - such as telecom and industrial SMPS.

S15KCHR7G 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

S15KCHR7G FAQ

1.How can I place an order for S15KCHR7G through Aetrix?

Please submit a Request for Quotation (RFQ) for S15KCHR7G 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 S15KCHR7G reliable?

The price and inventory of S15KCHR7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S15KCHR7G is usually 5 days.

3.What payment methods are accepted for S15KCHR7G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S15KCHR7G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S15KCHR7G?

S15KCHR7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S15KCHR7G 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 S15KCHR7G?

For technical support, including S15KCHR7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S15KCHR7G requirements.

6.How does Aetrix verify that S15KCHR7G is sourced from the original manufacturer or authorized distributors?

All S15KCHR7G 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 S15KCHR7G meets industry standards.

7.What is the process for return or replacement of S15KCHR7G?

All S15KCHR7G units undergo pre-shipment inspection (PSI). If there is an issue with S15KCHR7G, 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 S15KCHR7G part is unused and in its original packaging.

Return procedure for S15KCHR7G:

1.Submit a request within 90 days.

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

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