My Inquiry
My Account
Taiwan Semiconductor Corporation SK52CHR7G
- Part No.:
- SK52CHR7G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SK52CHR7G.pdf
- Description:
- DIODE SCHOTTKY 20V 5A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,542
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SK52CHR7G from Taiwan Semiconductor is a 5A, 20V AEC-Q101-qualified Schottky barrier rectifier in DO-214AB (SMC) package, featuring low forward voltage (0.55 V at 5 A, 25°C), high surge current capability (120 A), and guard ring overvoltage protection. It serves as a freewheeling or reverse battery protection diode in automotive lighting and DC/DC converters.
For engineers reviewing the SK52CHR7G datasheet, SK52CHR7G pinout, SK52CHR7G application, or SK52CHR7G equivalent, key selection criteria include its 20 V VRRM, 13 °C/W junction-to-lead thermal resistance, moisture sensitivity level 1 rating, RoHS/halogen-free compliance, and suitability for automated SMT placement in high-reliability automotive power stages.
Technical Context
The SK52CHR7G is a single-die, unidirectional Schottky rectifier optimized for low-loss operation in 20 V systems. Its 0.55 V forward voltage at 5 A and 25°C enables high efficiency in compact DC/DC topologies, while the guard ring structure enhances ruggedness against transient overvoltage events.
Thermal performance is defined by RθJL = 13 °C/W and RθJA = 53 °C/W on a 16 mm × 16 mm Cu pad PCB. With a maximum junction temperature of 150°C and 120 A non-repetitive surge rating (8.3 ms half-sine), it supports demanding automotive transients without derating in typical board layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Maximum repetitive reverse voltage; defines safe blocking capability in 12–16 V automotive systems. |
| IF | 5 A - Continuous forward current rating; supports sustained load in LED drivers and buck converter outputs. |
| VF | 0.55 V @ 5 A, 25°C - Low conduction loss enabling >95% efficiency in low-voltage switching paths. |
| IFSM | 120 A - Peak surge current handling; withstands cold-crank and load-dump transients per ISO 16750-2. |
| RθJL | 13 °C/W - Junction-to-lead thermal resistance; enables direct heat transfer to PCB copper, reducing thermal stress. |
| TJ max | 150 °C - Maximum operating junction temperature; supports under-hood deployment with margin. |
| MSL | Level 1 (per J-STD-020) - No floor life limitation; compatible with standard reflow without dry-pack requirements. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount plastic case with matte tin-plated leads, cathode indicated by band. Weight: 0.210 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to input/source side; must be routed with adequate copper area for 5 A continuous conduction. |
| Cathode | Forward current exit point | Marked by band; ties to ground or return path; critical for reverse polarity protection orientation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan. |
| Guard ring structure | Enhances edge termination robustness, improving dv/dt immunity (10,000 V/µs) and preventing premature avalanche breakdown. |
| Low VF at high IF | 0.55 V @ 5 A ensures minimal power dissipation (2.75 W) and reduced heatsinking needs in space-constrained modules. |
| Halogen-free & RoHS | Meets EU Directive 2011/65/EU and JEDEC JS709C; eliminates brominated flame retardants for safer end-of-life processing. |
| Moisture sensitivity level 1 | Enables direct placement from tape-and-reel without baking, lowering manufacturing cost and process complexity. |
Applications
| Automotive LED Headlamp Driver | 12 V Automotive DC/DC Converter Output Rectification |
|---|---|
Use Scenario: High-brightness LED arrays powered from vehicle battery via synchronous buck regulator. IC Role / Device Role / Timing Role: Freewheeling diode during low-side switch off-time; clamps inductive kickback and recirculates current. Use Value: 0.55 V VF minimizes conduction loss and thermal rise in sealed headlamp housings where airflow is restricted. |
Use Scenario: 12 V input to 5 V/3.3 V point-of-load converter supplying ADAS sensors or infotainment processors. IC Role / Device Role / Timing Role: Secondary-side rectifier replacing synchronous MOSFET in cost-sensitive designs requiring simplicity and reliability. Use Value: AEC-Q101 qualification and 150°C TJ max ensure stable operation across engine bay temperature extremes (-40°C to +125°C ambient). |
| Reverse Battery Protection Circuit | Automotive Interior Lighting Power Path |
Use Scenario: Preventing damage when jumper cables are incorrectly connected during battery replacement or jump-starting. IC Role / Device Role / Timing Role: Series-connected anode-to-battery and cathode-to-system; blocks reverse polarity current flow. Use Value: 20 V VRRM provides sufficient margin above nominal 12 V systems while maintaining low forward drop for minimal voltage loss. |
Use Scenario: Power distribution to map lights, dome lights, and courtesy LEDs in door modules and center console. IC Role / Device Role / Timing Role: Isolation diode ensuring independent power domains and preventing backfeed between circuits. Use Value: MSL Level 1 and halogen-free construction support high-volume automated assembly and meet OEM environmental compliance mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-50WQ03FN-M3/45 | 30 V VRRM, 5 A, VF = 0.45 V @ 5 A, DO-214AB, AEC-Q101 qualified | Higher voltage margin but lower VF; better for 24 V systems or tighter efficiency targets | Select when lower conduction loss outweighs need for exact 20 V rating; verify layout compatibility with identical SMC footprint. |
| ON Semiconductor SB520-E3/54 | 20 V VRRM, 5 A, VF = 0.54 V @ 5 A, DO-214AB, AEC-Q101 qualified, MSL Level 1 | Near-identical electrical specs and qualification; minor VF variation within tolerance band | Drop-in alternative with same voltage rating and thermal profile; validated for same automotive lighting and power rail use cases. |
Compared with SK52CHR7G, the VS-50WQ03FN-M3/45 offers lower forward voltage but higher reverse voltage, making it more versatile in dual-voltage platforms; the SB520-E3/54 matches SK52CHR7G's 20 V rating and thermal behavior more closely, simplifying qualification in existing 12 V designs.
Availability
SK52CHR7G is available at Aetrix Electronics and suitable for automotive LED lighting, 12 V DC/DC converter output rectification, and reverse battery protection circuits requiring stable component supply and AEC-Q101 compliance.
Supply support for SK52CHR7G 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 devices, rectifiers, and protection components for automotive and industrial markets.
The SK52CH series was developed specifically for AEC-Q101-compliant automotive power conversion and protection, targeting high-efficiency, high-reliability applications in lighting, body control, and power distribution modules.
FAQ
What is the maximum junction temperature rating for SK52CHR7G?
The SK52CHR7G has a maximum junction temperature (TJ) of 150°C, verified per AEC-Q101 stress testing. This rating allows reliable operation in under-hood environments where ambient temperatures reach 125°C, provided thermal design maintains junction temperature below 150°C using the specified RθJL = 13 °C/W path to PCB copper.
Is SK52CHR7G suitable for reverse battery protection in 12 V automotive systems?
Yes, SK52CHR7G is explicitly designed for reverse battery protection in 12 V systems. Its 20 V VRRM provides adequate margin above nominal battery voltage and transient spikes, while its 0.55 V forward voltage minimizes voltage drop across the protection path-critical for preserving system functionality during cranking conditions.
Does SK52CHR7G require moisture preconditioning before reflow soldering?
No, SK52CHR7G carries Moisture Sensitivity Level (MSL) 1 per J-STD-020, meaning it has unlimited floor life and does not require dry packing or baking prior to reflow. This simplifies SMT line integration and reduces manufacturing overhead compared to higher-MSL discrete diodes.
What is the surge current rating of SK52CHR7G and how is it tested?
The SK52CHR7G supports a non-repetitive peak forward surge current (IFSM) of 120 A, measured using an 8.3 ms single half-sine wave superimposed on rated load. This rating aligns with ISO 16750-2 load-dump and cold-crank pulse requirements, confirming robustness against real-world automotive transients.
How does the guard ring feature improve reliability in SK52CHR7G?
The guard ring in SK52CHR7G enhances edge termination integrity, increasing resistance to surface flashover and localized avalanche during overvoltage events. This directly improves dv/dt immunity (rated at 10,000 V/µs) and extends device lifetime in noisy automotive power rails where voltage transients exceed nominal ratings.
SK52CHR7G 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:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 20 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 20 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SK52CHR7G FAQ
1.How can I place an order for SK52CHR7G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK52CHR7G 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 SK52CHR7G reliable?
The price and inventory of SK52CHR7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK52CHR7G is usually 5 days.
3.What payment methods are accepted for SK52CHR7G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK52CHR7G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK52CHR7G?
SK52CHR7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK52CHR7G 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 SK52CHR7G?
For technical support, including SK52CHR7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK52CHR7G requirements.
6.How does Aetrix verify that SK52CHR7G is sourced from the original manufacturer or authorized distributors?
All SK52CHR7G 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 SK52CHR7G meets industry standards.
7.What is the process for return or replacement of SK52CHR7G?
All SK52CHR7G units undergo pre-shipment inspection (PSI). If there is an issue with SK52CHR7G, 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 SK52CHR7G part is unused and in its original packaging.
Return procedure for SK52CHR7G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SK52CHR7G Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
