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Taiwan Semiconductor Corporation SK13BH
- Part No.:
- SK13BH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SK13BH.pdf
- Description:
- DIODE SCHOTTKY 30V 1A DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,073
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Product details
Overview
SK13BH from Taiwan Semiconductor is a 1A, 30V Schottky barrier surface-mount rectifier in DO-214AA (SMB) package, qualified to AEC-Q101, with 0.50V forward voltage at 1A/25°C, 30A surge capability, and junction temperature rating up to +150°C. It serves as a freewheeling or reverse-battery protection diode in automotive lighting and DC/DC converters.
For engineers reviewing the SK13BH datasheet, SK13BH pinout, SK13BH application, or SK13BH equivalent, key selection criteria include its 30V VRRM, low VF for efficiency-critical 12V systems, AEC-Q101 qualification for automotive environments, and SMB package compatibility with high-density PCB layouts.
Technical Context
The SK13BH employs a single-die Schottky structure optimized for low forward voltage and fast switching, enabling high-efficiency operation in low-voltage, high-frequency power conversion. Its guard ring design enhances overvoltage robustness, while JESD201 Class 2 whisker resistance and moisture sensitivity level 1 support reliable automated assembly.
Thermal performance is defined by a 25°C/W junction-to-lead thermal resistance, supporting continuous 1A conduction at ambient temperatures up to +100°C when mounted on standard copper pads. The device operates across –55°C to +150°C junction range, with reverse leakage limited to 0.5mA at 25°C and 10mA at 100°C under rated 30V reverse bias.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in 12V automotive circuits with load-dump transients. |
| IF | 1 A - Continuous forward current rating; supports steady-state power path handling in compact DC/DC stages. |
| VF @ 1A, 25°C | 0.50 V - Low forward drop reduces conduction loss and self-heating in battery-powered and thermally constrained designs. |
| IFSM | 30 A - Non-repetitive surge current (8.3ms half-sine); withstands inrush and fault currents in automotive subsystems. |
| TJ max | +150 °C - Extended junction temperature rating enables use in under-hood applications without derating penalties. |
| dV/dt | 10,000 V/µs - High critical rate-of-rise immunity prevents false turn-on in noisy switching node environments. |
| RθJL | 25 °C/W - Junction-to-lead thermal resistance; enables direct thermal coupling to PCB copper for passive cooling. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, cathode indicated by band. Matte tin-plated leads, JEDEC-compliant outline, UL 94V-0 molding compound, 0.093g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., ground or switch node return) in freewheeling or reverse-protection configurations. |
| Cathode | Forward current exit / reverse-blocking terminal | Marked by band; connects to higher-potential rail (e.g., battery positive or output node) to block reverse current flow. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock per stress test requirements. |
| Guard ring structure | Improves edge termination robustness against localized overvoltage events without requiring external snubbers. |
| Moisture sensitivity level 1 | Eliminates bake preconditioning before reflow, reducing manufacturing cost and process complexity. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS directives for environmentally restricted substances in end-product compliance. |
Applications
| Automotive LED Lighting | 12V DC/DC Converter Output Rectification |
|---|---|
Use Scenario: Reverse polarity protection in headlamp control modules exposed to battery reversal during jump-start or service. IC Role / Device Role / Timing Role: Standalone Schottky rectifier providing unidirectional current path and clamping. Use Value: 0.50V VF minimizes voltage drop and heat generation in space-constrained lamp housings; AEC-Q101 ensures field reliability. | Use Scenario: Synchronous rectifier replacement in buck converter secondary-side output stage for improved efficiency. IC Role / Device Role / Timing Role: Freewheeling diode conducting during high-side switch off-time. Use Value: 30A IFSM handles transient load steps; 25°C/W RθJL enables stable thermal performance without heatsink. |
| Reverse Battery Protection | Low-Voltage Inverter Freewheeling |
Use Scenario: Preventing damage to infotainment ECUs when battery terminals are accidentally reversed during installation. IC Role / Device Role / Timing Role: Series-connected blocking diode placed between battery input and system power rail. Use Value: 30V VRRM provides sufficient margin above 12V nominal; low VF avoids excessive voltage loss in always-on circuits. | Use Scenario: Energy recirculation path in motor driver inverters for small BLDC fans or pumps. IC Role / Device Role / Timing Role: Freewheeling path for inductive kickback during PWM switching transitions. Use Value: 10,000 V/µs dV/dt rating prevents spurious conduction during fast-switching gate drive edges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS13 (Diodes Inc.) | VRRM = 30V, VF = 0.50V @ 1A, same SMB package, but not AEC-Q101 qualified. | Lacks automotive qualification; suitable for industrial/commercial DC/DC where stress testing is not mandated. | Select SS13 only if AEC-Q101 is not required and cost sensitivity outweighs qualification needs. |
| SB130 (ON Semiconductor) | VRRM = 30V, VF = 0.52V @ 1A, SMB package, AEC-Q101 qualified, but IFSM = 25A (vs. SK13BH's 30A). | Lower surge rating may require derating in high-inrush automotive loads like solenoid drivers. | Choose SB130 when footprint compatibility and qualification are primary, accepting minor surge margin reduction. |
Compared with SS13 and SB130, the SK13BH delivers the highest surge current rating (30A) among 30V SMB Schottkys with AEC-Q101, making it optimal for automotive applications demanding both qualification and transient robustness-without layout changes or thermal redesign.
Availability
SK13BH is available at Aetrix Electronics and suitable for automotive LED lighting, reverse battery protection, and 12V DC/DC converter output rectification requiring stable component supply across production lifecycles.
Supply support for SK13BH 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 automotive, industrial, and consumer markets since 1979.
The SK13BH belongs to TSC's AEC-Q101-qualified SMB Schottky rectifier family, engineered specifically for high-reliability 12V automotive power systems where low VF, surge resilience, and assembly robustness are critical.
FAQ
What is the maximum junction temperature rating for SK13BH?
The SK13BH has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table. This allows operation in under-hood automotive environments without forced cooling. The SK13BH maintains specified electrical performance up to this limit, with thermal derating applied beyond 25°C ambient per the forward current derating curve in the datasheet.
Is SK13BH suitable for reverse battery protection in automotive ECUs?
Yes, the SK13BH is explicitly designed for reverse battery protection, as confirmed by its AEC-Q101 qualification, 30V VRRM (providing margin above 12V nominal), and low 0.50V forward voltage that minimizes power loss. Its guard ring structure also improves robustness against voltage transients common during jump-start scenarios, making SK13BH a validated choice for ECU input protection.
What is the forward voltage of SK13BH at 1A and 100°C junction temperature?
The datasheet specifies forward voltage only at 25°C (0.50V @ 1A). While no exact VF value is given at 100°C, the typical forward characteristics curve (Fig.4) shows VF increases ~0.05–0.07V per 50°C rise. Thus, SK13BH VF at 1A and 100°C is approximately 0.55–0.57V - consistent with Schottky behavior and usable for thermal-aware design margining.
Does SK13BH have a halogen-free construction?
Yes, SK13BH complies with IEC 61249-2-21 for halogen-free materials, as stated in the FEATURES section. The molding compound contains no brominated or chlorinated flame retardants, supporting environmental compliance for automotive and industrial end equipment subject to substance restrictions.
What packaging format is offered for SK13BH?
SK13BH is supplied in tape-and-reel packaging: 3,000 units per reel, compatible with standard SMT pick-and-place equipment. The DO-214AA (SMB) package uses matte tin-plated leads meeting J-STD-002 solderability requirements, and the moisture sensitivity level is rated at Level 1 - eliminating the need for baking prior to reflow soldering.
SK13BH 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):
- 30 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 @ 30 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
SK13BH FAQ
1.How can I place an order for SK13BH through Aetrix?
Please submit a Request for Quotation (RFQ) for SK13BH 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 SK13BH reliable?
The price and inventory of SK13BH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK13BH is usually 5 days.
3.What payment methods are accepted for SK13BH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK13BH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK13BH?
SK13BH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK13BH 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 SK13BH?
For technical support, including SK13BH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK13BH requirements.
6.How does Aetrix verify that SK13BH is sourced from the original manufacturer or authorized distributors?
All SK13BH 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 SK13BH meets industry standards.
7.What is the process for return or replacement of SK13BH?
All SK13BH units undergo pre-shipment inspection (PSI). If there is an issue with SK13BH, 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 SK13BH part is unused and in its original packaging.
Return procedure for SK13BH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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