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Taiwan Semiconductor Corporation SK14BHR5G
- Part No.:
- SK14BHR5G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SK14BHR5G.pdf
- Description:
- DIODE SCHOTTKY 40V 1A DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,910
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Product details
Overview
SK14BHR5G from Taiwan Semiconductor is a 1A, 40V Schottky barrier surface-mount rectifier in DO-214AA (SMB) package, featuring 0.50V forward voltage at 1A/25°C, 30A surge current capability, and guard ring overvoltage protection. It is used in switching mode power supplies, AC-DC adapters, and LED lighting converters where low conduction loss and fast recovery are required.
For engineers reviewing the SK14BHR5G datasheet, SK14BHR5G pinout, SK14BHR5G application, or SK14BHR5G equivalent, key selection criteria include its 40V VRRM, 1A continuous forward current, 0.50V VF at rated load, thermal resistance of 25°C/W, and DO-214AA mechanical compatibility with automated SMT placement.
Technical Context
This Schottky rectifier uses a single-die construction optimized for high-efficiency DC-DC conversion and low-loss rectification in compact power supplies. Its junction-to-lead thermal resistance of 25°C/W enables reliable operation up to 125°C junction temperature under sustained 1A load.
The device incorporates a guard ring structure to enhance ruggedness against transient overvoltage events and meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity requirements-critical for reflow-soldered industrial and consumer power designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse blocking voltage; defines safe operating range in 36V nominal input circuits |
| IF | 1 A - Continuous forward current rating; supports stable output in 5–12W SMPS designs |
| VF @ 1A, 25°C | 0.50 V - Low conduction loss reduces power dissipation by ~0.5W vs. silicon diodes at same current |
| IFSM | 30 A - Peak non-repetitive surge current handling; withstands inrush during cold-start or line transients |
| RθJL | 25 °C/W - Junction-to-lead thermal resistance; enables direct PCB copper pour heat sinking without heatsink |
| IR @ 40V, 25°C | 500 µA - Low leakage ensures minimal standby power loss in energy-efficient adapters |
| TJ max | 125 °C - Maximum junction temperature; supports operation in enclosed, thermally constrained enclosures |
Pinout & Package
Package: DO-214AA (SMB), surface-mount plastic case with matte tin-plated leads, cathode indicated by band. Weight: 0.093 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node) |
| Cathode | Forward current exit / reverse voltage reference | Marked with band; connects to output rail or filter capacitor positive terminal |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Improves dv/dt immunity and transient overvoltage robustness without derating VRRM |
| Moisture sensitivity level 1 | Enables standard reflow without baking; eliminates pre-conditioning step in production |
| UL 94V-0 molding compound | Meets flammability safety requirements for enclosed power adapters and lighting housings |
| RoHS & halogen-free compliance | Supports global environmental regulations including IEC 61249-2-21 and EU RoHS Directive |
Applications
| AC-DC Adapter Power Stage | LED Driver Secondary Rectification |
|---|---|
Use Scenario: 12V/1A output stage in wall-plug adapter with flyback topology. IC Role / Device Role / Timing Role: Output rectifier converting high-frequency transformer secondary AC to regulated DC. Use Value: 0.50V VF minimizes conduction loss, improving efficiency by ≥1.2% over comparable 1N5819 variants at full load. | Use Scenario: Constant-current LED driver for commercial downlights with 36V string voltage. IC Role / Device Role / Timing Role: Secondary-side freewheeling and rectification element in buck-derived topology. Use Value: 40V VRRM provides 10V margin above 36V string, while 30A IFSM handles PWM-induced current spikes. |
| USB-C PD Auxiliary Supply | Industrial DC-DC Converter Input Clamp |
Use Scenario: Auxiliary 5V supply generation from main 20V bus in USB-C PD controller subsystem. IC Role / Device Role / Timing Role: Low-loss synchronous rectifier replacement in isolated auxiliary winding circuit. Use Value: Low VF and SMB footprint enable compact layout near PD controller IC without thermal compromise. | Use Scenario: Reverse polarity and transient clamp on 24V industrial DC-DC input rail. IC Role / Device Role / Timing Role: Protection diode across input filter capacitor to absorb back-EMF from inductive loads. Use Value: Guard ring design sustains >10,000 V/µs dv/dt without snapback, preventing false triggering in noisy factory environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS14 (ON Semiconductor) | Same 40V VRRM, 1A IF, but VF = 0.55V @ 1A; RθJL = 30°C/W | Slightly higher conduction loss and thermal resistance; less suitable for thermally dense layouts | Acceptable where board space allows larger thermal pad or ambient is <50°C |
| SB140 (Diodes Inc.) | 40V VRRM, 1A IF, VF = 0.52V @ 1A; IR = 1 mA @ 40V/125°C (vs. SK14BHR5G's 10 mA) | Lower high-temp leakage improves standby efficiency in always-on systems | Preferred for battery-backed or energy-harvesting applications requiring ultra-low IR at elevated TJ |
Compared with SS14 and SB140, SK14BHR5G offers the lowest forward voltage (0.50V) and best thermal resistance (25°C/W) in the 40V/1A SMB-class Schottky segment-making it optimal for space-constrained, high-efficiency AC-DC and LED driver designs.
Availability
SK14BHR5G is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and LED lighting converters requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for SK14BHR5G 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 power management and protection markets since 1979.
The SK1xB series-including SK14BHR5G-is designed specifically for high-volume, cost-sensitive AC-DC and DC-DC power conversion applications demanding reliability, low VF, and robust surge handling in SMB packaging.
FAQ
What is the maximum junction temperature rating for SK14BHR5G?
The SK14BHR5G has a maximum junction temperature (TJ) rating of +125°C. This specification is validated per absolute maximum ratings in the official Taiwan Semiconductor datasheet (Version M2212). Operation beyond this limit risks irreversible degradation of the Schottky junction. Derating curves in Figure 1 confirm 1A continuous current is sustainable up to 125°C with appropriate PCB copper area.
Does SK14BHR5G have a lead-free and RoHS-compliant finish?
Yes, SK14BHR5G features matte tin-plated leads and is fully RoHS compliant and halogen-free per IEC 61249-2-21. The device meets J-STD-002 solderability standards and carries no exemption codes. All plating and molding compounds are documented in TSC's M2212 revision as green compound (G) and lead-free process qualified.
What is the reverse leakage current of SK14BHR5G at 40V and 100°C?
At 40V reverse bias and 100°C junction temperature, SK14BHR5G exhibits a maximum reverse current (IR) of 10 mA, as specified in the Electrical Specifications table (page 2, M2212). This value is measured using a 30ms pulse test and reflects typical high-temperature behavior critical for standby power budgeting in adapters and lighting drivers.
Is SK14BHR5G suitable for use in automotive applications?
SK14BHR5G is not qualified to AEC-Q101 or automotive-grade reliability standards. While its 125°C TJ max and robust surge rating support industrial environments, Taiwan Semiconductor explicitly states these devices are "not designed for use in medical, life-saving, or life-sustaining applications"-and automotive ECUs fall under similar functional safety scope. For automotive, consult TSC's AEC-Q101-certified SKxH series instead.
What does the 'HR5G' suffix in SK14BHR5G indicate?
The 'HR5G' suffix denotes Taiwan Semiconductor's internal packaging and environmental coding: 'H' = halogen-free compound, 'R5' = DO-214AA (SMB) package with tape-and-reel packing (3,000 pcs/reel), and 'G' = green (lead-free/RoHS-compliant) material set. This matches ordering code conventions defined in the "Ordering Information" section of the SK1xB datasheet (M2212, page 3).
SK14BHR5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 40 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
- Operating Temperature - Junction:
- -55°C ~ 125°C
SK14BHR5G FAQ
1.How can I place an order for SK14BHR5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK14BHR5G 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 SK14BHR5G reliable?
The price and inventory of SK14BHR5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK14BHR5G is usually 5 days.
3.What payment methods are accepted for SK14BHR5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK14BHR5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK14BHR5G?
SK14BHR5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK14BHR5G 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 SK14BHR5G?
For technical support, including SK14BHR5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK14BHR5G requirements.
6.How does Aetrix verify that SK14BHR5G is sourced from the original manufacturer or authorized distributors?
All SK14BHR5G 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 SK14BHR5G meets industry standards.
7.What is the process for return or replacement of SK14BHR5G?
All SK14BHR5G units undergo pre-shipment inspection (PSI). If there is an issue with SK14BHR5G, 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 SK14BHR5G part is unused and in its original packaging.
Return procedure for SK14BHR5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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