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Taiwan Semiconductor Corporation SK115BH
- Part No.:
- SK115BH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SK115BH.pdf
- Description:
- DIODE SCHOTTKY 150V 1A DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,092
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Product details
Overview
SK115BH from Taiwan Semiconductor is a 150 V, 1 A surface-mount Schottky barrier rectifier in DO-214AA (SMB) package, featuring 0.95 V forward voltage at 1 A and 0.1 mA reverse leakage at 25°C, optimized for reverse battery protection and DC/DC converter freewheeling in automotive lighting systems.
For engineers reviewing the SK115BH datasheet, SK115BH pinout, SK115BH application, or SK115BH equivalent, key selection criteria include peak reverse voltage (150 V), surge current capability (30 A), junction temperature rating (–55°C to +150°C), thermal resistance (25°C/W), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The SK115BH implements a single-die Schottky junction with guard ring structure for overvoltage protection and meets JESD201 Class 2 whisker resistance. Its low VF and high dV/dt (10,000 V/µs) support fast-switching topologies in low-voltage, high-frequency inverters.
Rated for TJ = –55°C to +150°C operation and moisture sensitivity level 1 (J-STD-020), it uses matte tin-plated leads compliant with J-STD-002 solderability and UL 94V-0 molded compound - enabling robust automated placement in automotive PCB assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 150 V - maximum repetitive reverse blocking voltage; defines safe operating range in reverse-biased applications like reverse battery protection |
| IF | 1 A continuous - rated average forward current; supports sustained conduction in DC/DC output stages |
| IFSM | 30 A - non-repetitive surge current (8.3 ms half-sine); handles inrush and transient overload without failure |
| VF @ 1 A, 25°C | 0.95 V - forward voltage drop; directly determines conduction loss and thermal dissipation in high-efficiency converters |
| IR @ VR, 25°C | 0.1 mA - reverse leakage at rated voltage; critical for low-power standby and reverse polarity protection integrity |
| RθJL | 25 °C/W - junction-to-lead thermal resistance; enables accurate thermal design when mounted on copper pads |
| TJ max | +150 °C - maximum junction temperature; allows operation in under-hood automotive environments |
Pinout & Package
Package: DO-214AA (SMB), surface-mount plastic case with cathode band marking; dimensions per JEDEC DO-214AA Issue D; weight ≈ 0.093 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., ground or switch node) in freewheeling path |
| Cathode | Forward current exit / reverse-blocking terminal | Marked by band; connected to higher-potential rail (e.g., battery positive or output capacitor) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics use including car lighting and power modules requiring stress-tested reliability |
| Guard ring structure | Enhances ruggedness against voltage transients and edge breakdown in high dV/dt switching environments |
| Moisture sensitivity level 1 | Enables direct placement without baking; compatible with standard SMT reflow profiles |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and environmental compliance requirements for global automotive supply chains |
| High surge current (30 A) | Withstands repeated load dump or inductive kick events in 12 V/24 V vehicle electrical systems |
Applications
| Reverse Battery Protection | DC/DC Converter Freewheeling |
|---|---|
Use Scenario: Installed between vehicle battery and ECU input to block reverse polarity connection during service or jump-start. IC Role / Device Role / Timing Role: Unidirectional conduction diode preventing damage to downstream SMPS and microcontrollers. Use Value: 150 V VRRM exceeds 24 V system transients; 0.1 mA IR minimizes quiescent drain in always-on modules. | Use Scenario: Placed across synchronous buck converter's low-side switch to conduct inductor current during high-side on-time. IC Role / Device Role / Timing Role: Freewheeling path for inductive energy recovery; operates at switching frequencies up to several hundred kHz. Use Value: 0.95 V VF reduces conduction loss vs. silicon diodes; 30 A IFSM absorbs inductor saturation spikes. |
| Automotive LED Lighting | Low-Voltage Inverter Output Stage |
Use Scenario: Used in constant-current LED driver outputs to prevent backfeed from parallel strings or capacitive loads. IC Role / Device Role / Timing Role: Output isolation diode ensuring unidirectional current flow in multi-channel lighting modules. Use Value: AEC-Q101 qualification ensures lifetime reliability under thermal cycling; SMB package fits compact headlamp PCB layouts. | Use Scenario: Employed in 12 V input inverters for auxiliary AC generation (e.g., cabin fans, USB inverters). IC Role / Device Role / Timing Role: High-frequency rectification stage converting switched AC to regulated DC output. Use Value: 10,000 V/µs dV/dt rating prevents false turn-on during fast edge transitions; 150 °C TJ max supports sealed enclosure operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS115H (ON Semiconductor) | VF = 0.87 V @ 1 A, 25°C; VRRM = 150 V; same DO-214AA package; not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial DC/DC but not safety-critical vehicle subsystems | Prefer SK115BH where AEC-Q101 compliance is mandatory |
| SB1150 (Vishay) | VF = 0.92 V @ 1 A, 25°C; VRRM = 150 V; DO-214AA; AEC-Q101 qualified; IR = 0.2 mA @ 25°C | Slightly higher leakage; identical thermal and surge ratings; same automotive use cases | Acceptable alternative if tighter IR spec is not required |
Compared with SS115H and SB1150, the SK115BH delivers the lowest reverse leakage (0.1 mA) among 150 V/1 A AEC-Q101 Schottkys, making it optimal for ultra-low-quiescent automotive modules where standby current must be minimized.
Availability
SK115BH is available at Aetrix Electronics and suitable for automotive LED lighting, reverse battery protection circuits, and DC/DC converter freewheeling applications requiring stable component supply and long-term lifecycle assurance.
Supply support for SK115BH 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 automotive, industrial, and consumer markets since 1979.
The SK115BH belongs to TSC's AEC-Q101-qualified SMB Schottky rectifier family, engineered specifically for high-reliability 12 V/24 V automotive power systems demanding low VF, high surge tolerance, and extended temperature operation.
FAQ
What is the maximum junction temperature rating for the SK115BH?
The SK115BH has a maximum junction temperature (TJ) rating of +150°C, validated per its AEC-Q101 qualification. This allows reliable operation in under-hood automotive environments where ambient temperatures exceed 105°C. The SK115BH maintains specified electrical performance up to this limit, provided thermal design accounts for its 25°C/W junction-to-lead resistance.
Is the SK115BH pin-compatible with other DO-214AA Schottky diodes?
Yes - the SK115BH uses the standard DO-214AA (SMB) package with anode and cathode terminals in fixed positions per JEDEC outline. It shares identical mechanical footprint and solder pad layout with all DO-214AA rectifiers, including SS115H and SB1150, enabling direct board-level substitution without PCB revision.
What does the "BH" suffix indicate in SK115BH?
The "BH" suffix in SK115BH denotes Taiwan Semiconductor's standard Schottky rectifier variant with matte tin-plated leads, halogen-free molding compound, and compliance with J-STD-002 solderability and JESD201 Class 2 whisker resistance. It distinguishes this qualified automotive-grade version from non-BH industrial variants.
Does the SK115BH require derating at elevated ambient temperatures?
Yes - the SK115BH's average forward current (IF) must be derated above 25°C ambient, per its forward current derating curve. At 100°C ambient, maximum IF drops to approximately 0.6 A with adequate copper pour; full 1 A operation requires thermal management to maintain TJ ≤ 150°C. The SK115BH datasheet provides exact derating values.
How is polarity indicated on the SK115BH package?
Polarity on the SK115BH is indicated by a distinct cathode band printed on the molded plastic body - consistent with DO-214AA standard orientation. The banded end is the cathode terminal; the opposite end is the anode. This marking aligns with PCB silkscreen polarity indicators and ensures correct orientation during automated placement of the SK115BH.
SK115BH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 150 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 150 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SK115BH FAQ
1.How can I place an order for SK115BH through Aetrix?
Please submit a Request for Quotation (RFQ) for SK115BH 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 SK115BH reliable?
The price and inventory of SK115BH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK115BH is usually 5 days.
3.What payment methods are accepted for SK115BH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK115BH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK115BH?
SK115BH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK115BH 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 SK115BH?
For technical support, including SK115BH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK115BH requirements.
6.How does Aetrix verify that SK115BH is sourced from the original manufacturer or authorized distributors?
All SK115BH 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 SK115BH meets industry standards.
7.What is the process for return or replacement of SK115BH?
All SK115BH units undergo pre-shipment inspection (PSI). If there is an issue with SK115BH, 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 SK115BH part is unused and in its original packaging.
Return procedure for SK115BH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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