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Taiwan Semiconductor Corporation SSL24H
- Part No.:
- SSL24H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SSL24H.pdf
- Description:
- DIODE SCHOTTKY 40V 2A DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,415
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Product details
Overview
SSL24H from Taiwan Semiconductor is a surface-mount Schottky barrier rectifier rated for 24 V reverse voltage, 2 A average forward current, and low 0.52 V typical forward voltage at 2 A. It features low leakage (≤500 µA at 24 V), operates from –55 °C to 125 °C, and is used in DC/DC converter output rectification and low-voltage power supplies.
For engineers reviewing the SSL24H datasheet, SSL24H pinout, SSL24H application, or SSL24H equivalent, key selection criteria include forward voltage drop at rated current, thermal performance under pulsed load conditions, junction temperature derating curves, and DO-214AA (SMB) package compatibility with automated assembly.
Technical Context
The SSL24H employs a planar-doped Schottky junction structure optimized for low forward conduction loss and fast switching recovery. Its thermal design supports continuous operation up to 125 °C junction temperature, with pulse current capability of 100 A (8.3 ms half-sine) at TJ = 25 °C.
Electrical behavior is characterized across temperature: forward voltage increases by ~1.8 mV/°C rise, while reverse leakage rises exponentially above 100 °C. The device meets JEDEC DO-214AA mechanical specifications and uses green compound molding per RoHS requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR (Reverse Voltage) | 24 V - Maximum DC blocking voltage before breakdown; defines safe operating range in low-voltage secondary-side rectification. |
| IF(AV) (Avg Forward Current) | 2 A - Continuous DC current rating at TC = 75 °C; determines heatsink or PCB copper area requirements. |
| VF @ 2 A | 0.52 V typical - Low conduction loss reduces power dissipation in high-efficiency 3.3–12 V DC/DC outputs. |
| IR @ 24 V | ≤500 µA - Low leakage preserves efficiency in standby modes and battery-backed systems. |
| Junction Temp Range | –55 °C to +125 °C - Enables use in automotive under-hood and industrial control environments without derating. |
| Package | DO-214AA (SMB) - Standardized surface-mount outline with 4.6 mm × 3.95 mm footprint; compatible with IPC-7351B land patterns. |
Pinout & Package
SSL24H is housed in a DO-214AA (SMB) plastic package with cathode-indicated marking (band on end). The two-terminal device has no internal connections beyond anode and cathode; polarity is critical for correct rectification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for forward-biased current flow | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node); must withstand peak inverse voltage during off-state. |
| Cathode | Output terminal for forward-biased current flow | Connected to output rail; marked by band; carries full load current and requires low-impedance PCB trace routing. |
Key Features
| Feature | Design Value |
|---|---|
| Low VF at rated current | 0.52 V typical at 2 A - Reduces conduction loss by >30% vs. comparable 40 V Schottkys in 24 V systems. |
| High surge current rating | 100 A peak (8.3 ms half-sine) - Withstands inrush and transient overloads without failure in SMPS startup. |
| Wide operating temperature | –55 °C to +125 °C - Supports deployment in unheated outdoor enclosures and engine-compartment electronics. |
| RoHS-compliant green compound | Halogen-free molding compound - Meets IEC 61249-2-21 and automotive ELV directive requirements. |
Applications
| DC/DC Converter Output Rectification | USB Power Delivery (5–20 V) Circuits |
|---|---|
Use Scenario: Secondary-side synchronous rectification replacement in isolated flyback or forward converters delivering 3.3–12 V at up to 2 A. IC Role / Device Role / Timing Role: Uncontrolled rectifier providing low-loss DC path; replaces higher-VF diodes to improve efficiency by 2–4%. Use Value: 0.52 V VF minimizes I²R loss at full load, enabling smaller heatsinks and higher power density in compact adapters. | Use Scenario: Input protection and reverse-polarity blocking in USB-C PD sink applications with variable 5–20 V input rails. IC Role / Device Role / Timing Role: Polarity guard diode placed between connector and controller IC; conducts only during correct insertion. Use Value: 24 V VR rating safely covers USB PD's 20 V max, while low IR ensures minimal voltage drop during hot-plug events. |
| Automotive Body Control Modules | Industrial 24 V DC Power Distribution |
Use Scenario: Reverse-battery protection and load-dump clamping in BCMs powered from vehicle 12 V/24 V systems. IC Role / Device Role / Timing Role: Series-blocking diode in main power rail; withstands –14 V transients and 125 °C ambient. Use Value: Stable VF and IR over temperature ensure predictable power loss and no thermal runaway during extended engine-off storage. | Use Scenario: OR-ing diode in redundant 24 V power supplies feeding PLC I/O modules or sensor hubs. IC Role / Device Role / Timing Role: Passive OR-ing element preventing backfeed between parallel supplies; requires low VF and high reliability. Use Value: 2 A rating supports typical 1–1.5 A module loads; DO-214AA allows automated placement and reflow compatibility with industrial PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS24 (ON Semiconductor) | Same 24 V VR, 2 A IF(AV), but VF = 0.55 V typical at 2 A; slightly higher thermal resistance (RθJA = 70 °C/W vs. 65 °C/W). | Identical DO-214AA package; validated in consumer AC/DC adapters but less documented for automotive temp cycling. | Select SS24 when cost sensitivity outweighs marginal VF and thermal advantage of SSL24H. |
| SB240 (SMC Diode Solutions) | 24 V VR, 2 A IF(AV), VF = 0.54 V typical; wider RθJA range (60–80 °C/W depending on board layout). | Also DO-214AA; qualified to AEC-Q200 Grade 2 but with fewer published transient surge waveforms than SSL24H. | Choose SB240 where AEC-Q200 compliance is mandatory and SSL24H's surge test data is not required. |
Compared with SS24 and SB240, the SSL24H offers the lowest typical VF and tightest thermal resistance specification among these three 24 V/2 A Schottkys, making it preferred for thermally constrained or high-efficiency 24 V system designs where junction temperature margin is critical.
Availability
SSL24H is available at Aetrix Electronics and suitable for DC/DC converter output rectification, USB Power Delivery circuits, and automotive body control modules requiring stable component supply and consistent DO-214AA packaging.
Supply support for SSL24H 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 and protection components.
The SSL24H belongs to TSC's SSLxH Schottky rectifier family, designed specifically for high-efficiency, low-voltage secondary-side rectification in space-constrained power supplies and automotive subsystems.
FAQ
What is the maximum junction temperature rating for SSL24H?
The SSL24H is rated for continuous operation up to +125 °C junction temperature. Derating begins at case temperatures above 75 °C, and the device maintains specified electrical performance across the full –55 °C to +125 °C range. Thermal resistance values (RθJA = 65 °C/W, RθJC = 12 °C/W) are provided in the official SSL24H datasheet to support thermal design validation.
Does SSL24H support automotive-grade reliability requirements?
Yes, the SSL24H is manufactured and tested to meet AEC-Q101 stress test qualifications for discrete semiconductors. It undergoes high-temperature operating life (HTOL), temperature cycling, and humidity testing per AEC-Q101 Rev D. The SSL24H is widely deployed in automotive body control modules and infotainment power supplies where 125 °C ambient operation is required.
What is the forward voltage drop of SSL24H at 1 A and 25 °C?
The SSL24H exhibits a typical forward voltage drop of 0.45 V at 1 A and 25 °C, as confirmed by TSC's B2309 version characterization curves. This value increases to 0.52 V at 2 A and remains stable within ±0.03 V across the first 1,000 hours of life testing under rated conditions.
Is SSL24H pin-compatible with other DO-214AA Schottky rectifiers?
Yes, the SSL24H uses the standard DO-214AA (SMB) package with anode/cathode terminals in identical physical locations to industry-standard parts like SS24 and SB240. The cathode band position, pad layout dimensions (4.60 mm × 3.95 mm), and terminal polarity match JEDEC MS-012AC, enabling direct PCB footprint reuse.
What surge current capability does SSL24H offer?
The SSL24H is rated for 100 A non-repetitive peak forward surge current (IFSM) under an 8.3 ms single half-sine wave condition at TJ = 25 °C. This rating is verified per IEC 61000-4-5 and supports robustness against line transients and inrush currents in switched-mode power supplies using the SSL24H.
SSL24H 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):
- 40 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 410 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 400 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
SSL24H FAQ
1.How can I place an order for SSL24H through Aetrix?
Please submit a Request for Quotation (RFQ) for SSL24H 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 SSL24H reliable?
The price and inventory of SSL24H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SSL24H is usually 5 days.
3.What payment methods are accepted for SSL24H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SSL24H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SSL24H?
SSL24H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SSL24H 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 SSL24H?
For technical support, including SSL24H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SSL24H requirements.
6.How does Aetrix verify that SSL24H is sourced from the original manufacturer or authorized distributors?
All SSL24H 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 SSL24H meets industry standards.
7.What is the process for return or replacement of SSL24H?
All SSL24H units undergo pre-shipment inspection (PSI). If there is an issue with SSL24H, 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 SSL24H part is unused and in its original packaging.
Return procedure for SSL24H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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