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Taiwan Semiconductor Corporation SS24H
- Part No.:
- SS24H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SS24H.pdf
- Description:
- DIODE SCHOTTKY 40V 2A DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,000
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Product details
Overview
SS24H from Taiwan Semiconductor is a 2A, 40V Schottky barrier surface-mount rectifier in DO-214AA (SMB) package, qualified to AEC-Q101, with VF = 0.50 V at IF = 2A and TJ = 25°C, IR ≤ 400 µA at VR = 40V and TJ = 25°C, and IFSM = 50A for 8.3ms surge - used in automotive LED lighting and DC/DC converter freewheeling paths.
For engineers reviewing the SS24H datasheet, SS24H pinout, SS24H application, or SS24H equivalent, key selection criteria include its 40V VRRM rating, low 0.50 V forward drop at 2A, AEC-Q101 qualification, SMB package thermal resistance (RθJL = 24°C/W), and suitability for reverse battery protection in 12V automotive systems.
Technical Context
The SS24H implements a single-die Schottky junction optimized for low forward voltage and fast switching, with no recovery time and negligible minority-carrier storage. Its guard ring structure enhances over-voltage ruggedness while maintaining low leakage up to 100°C.
Designed for surface-mount assembly on PCBs with standard reflow profiles, it meets J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements, and operates across –55°C to +150°C junction temperature range with moisture sensitivity level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - maximum repetitive reverse blocking voltage; defines safe operating limit in 12V automotive circuits with load dump transients |
| IF | 2 A continuous - rated average forward current; supports compact DC/DC converter output stages without forced cooling |
| VF @ 2A, 25°C | 0.50 V - low conduction loss enables >92% efficiency in 5–12V buck converters at full load |
| IR @ 40V, 25°C | ≤400 µA - minimal leakage preserves battery standby life in always-on vehicle modules |
| IFSM | 50 A - handles inrush and fault currents in automotive power rails without catastrophic failure |
| TJ max | +150°C - enables operation adjacent to hot engine-control electronics without derating |
| RθJL | 24°C/W - efficient heat transfer to PCB copper; allows 1.5W dissipation with 36°C rise above lead temperature |
Pinout & Package
DO-214AA (SMB) molded plastic package with matte tin-plated leads, cathode indicated by band; polarity-critical for reverse-battery protection and freewheeling diode orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input / Source side | Connected to positive rail or switch node; must withstand full system voltage during reverse bias |
| Cathode | Output / Load side | Connected to ground or return path; carries full forward current and defines circuit polarity |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling, humidity, and mechanical shock per stress test plan |
| Guard ring structure | Prevents edge breakdown at high dV/dt (10,000 V/µs), improving reliability in noisy switching environments |
| Low VF at high temperature | VF = 0.40 V at IF = 2A and TJ = 100°C - maintains efficiency in thermally constrained enclosures |
| Moisture sensitivity level 1 | No bake preconditioning required before reflow; compatible with standard SMT assembly lines |
| Halogen-free & RoHS compliant | Meets EU Directive 2011/65/EU and JEDEC JS709C; supports green manufacturing and end-of-life recycling |
Applications
| Automotive LED Headlamp Driver | 12V-to-5V Buck Converter Output Stage |
|---|---|
Use Scenario: High-brightness LED array powered from vehicle battery with PWM dimming and thermal foldback. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous or asynchronous buck topology; provides current continuity during high-side FET off-time. Use Value: 0.50 V VF minimizes power loss and heatsink size; AEC-Q101 ensures 15-year field reliability in vibration-prone headlamp housings. | Use Scenario: Power supply for infotainment MCU and CAN transceiver in dashboard ECU. IC Role / Device Role / Timing Role: Output rectifier in non-synchronous buck regulator; clamps inductive kickback and recirculates energy. Use Value: 50A IFSM withstands cold-crank surges; 40V VRRM safely blocks 12V nominal + 25V load dump transients per ISO 7637-2. |
| Reverse Battery Protection Circuit | USB-C Power Delivery Input Clamp |
Use Scenario: Preventing damage when jumper cables are connected backward to vehicle battery terminals. IC Role / Device Role / Timing Role: Series-blocking diode placed between battery input and downstream power management ICs. Use Value: Low 0.50 V drop reduces voltage loss in 12V rail; SMB footprint fits tight board space near connector; 150°C TJ rating survives under-hood ambient. | Use Scenario: Input-stage clamp in portable diagnostic tool accepting 5–20V USB-C PD input. IC Role / Device Role / Timing Role: Reverse-polarity protection diode on main power rail prior to buck controller and LDOs. Use Value: 400 µA IR at 25°C prevents standby drain; halogen-free construction complies with medical-grade enclosure requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB240-E3/52 | VRRM = 40 V, VF = 0.55 V @ 2A, 25°C, RθJA = 75°C/W - higher thermal resistance and forward drop | Lacks AEC-Q101 qualification; not validated for automotive under-hood use | Preferred for cost-sensitive industrial DC/DC where automotive qualification is unnecessary |
| SS24HE3/52 | Same electrical specs and AEC-Q101 rating; identical DO-214AA package but Vishay marking and traceability | Functionally interchangeable; differs only in manufacturer-specific lot traceability and tape/reel packaging | Drop-in alternative if Taiwan Semiconductor supply is constrained; verify reel coding and date code compatibility |
Compared with SB240-E3/52 and SS24HE3/52, the SS24H offers lower VF and better thermal performance than the former, and matches the latter's automotive qualification while offering distinct supply-chain traceability and Taiwan Semiconductor's long-term product continuity commitment.
Availability
SS24H is available at Aetrix Electronics and suitable for automotive lighting, DC/DC converter output stages, and reverse battery protection requiring stable component supply across multi-year production cycles.
Supply support for SS24H 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 SS22H–SS215H Schottky rectifier family was designed specifically for high-efficiency, high-reliability power conversion in automotive subsystems - emphasizing low VF, AEC-Q101 compliance, and robust thermal performance in SMB packages.
FAQ
What is the peak repetitive reverse voltage rating of the SS24H?
The SS24H has a peak repetitive reverse voltage (VRRM) rating of 40 V. This value is specified in the Absolute Maximum Ratings table and confirmed across all versions of the SS22H–SS215H datasheet. It defines the maximum reverse-bias voltage the device can block continuously without breakdown, making SS24H suitable for 12V automotive systems with transient overvoltage margins.
Is the SS24H qualified for automotive applications?
Yes, the SS24H is explicitly qualified to AEC-Q101 standards, as stated in the FEATURES section of the official Taiwan Semiconductor datasheet. This qualification includes stress testing for temperature cycling, humidity, mechanical shock, and other environmental conditions required for under-hood automotive deployment - confirming SS24H's suitability for safety-critical and long-lifecycle vehicle systems.
What is the forward voltage drop of the SS24H at 2A and 100°C junction temperature?
The SS24H exhibits a typical forward voltage (VF) of 0.40 V at IF = 2 A and TJ = 100°C, per the Electrical Specifications table. This lower VF at elevated temperature improves power conversion efficiency in thermally demanding applications such as LED drivers mounted near heat sources, and is a key differentiator versus higher-VF alternatives.
Does the SS24H have a defined moisture sensitivity level (MSL)?
Yes, the SS24H has a moisture sensitivity level of MSL 1, as documented in the FEATURES section. This means the device may be stored indefinitely at ambient conditions (<30°C / 60% RH) and requires no baking prior to standard reflow soldering - simplifying SMT line integration and eliminating process delays associated with MSL 3+ components.
What package type does the SS24H use, and what are its key mechanical attributes?
The SS24H uses the DO-214AA (SMB) surface-mount package. Key mechanical attributes include matte tin-plated leads compliant with J-STD-002, UL 94V-0 flammability-rated molding compound, cathode polarity indicated by a visible band, and a weight of approximately 0.093 g. Dimensions match JEDEC DO-214AA Issue D, with body size 4.60 × 3.95 × 2.20 mm.
SS24H 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:
- 500 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
SS24H FAQ
1.How can I place an order for SS24H through Aetrix?
Please submit a Request for Quotation (RFQ) for SS24H 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 SS24H reliable?
The price and inventory of SS24H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS24H is usually 5 days.
3.What payment methods are accepted for SS24H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS24H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS24H?
SS24H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS24H 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 SS24H?
For technical support, including SS24H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS24H requirements.
6.How does Aetrix verify that SS24H is sourced from the original manufacturer or authorized distributors?
All SS24H 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 SS24H meets industry standards.
7.What is the process for return or replacement of SS24H?
All SS24H units undergo pre-shipment inspection (PSI). If there is an issue with SS24H, 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 SS24H part is unused and in its original packaging.
Return procedure for SS24H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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