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Taiwan Semiconductor Corporation SS24FSH
- Part No.:
- SS24FSH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-128
- Datasheet:
-
SS24FSH.pdf
- Description:
- 2A, 40V, SCHOTTKY RECTIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:27,980
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Product details
Overview
SS24FSH from Taiwan Semiconductor is a 2 A, 40 V Schottky barrier surface-mount rectifier in SOD-128 package, optimized for low forward voltage (0.46 V at 2 A, 25°C) and high surge capability (50 A IFSM), widely used in switching mode power supplies and on-board DC/DC converters.
For engineers reviewing the SS24FSH datasheet, SS24FSH pinout, SS24FSH application, or SS24FSH equivalent, key selection criteria include its AEC-Q101 qualification, 18°C/W junction-to-lead thermal resistance, 124 pF junction capacitance at 1 MHz, moisture sensitivity level 1 rating, and compatibility with automated placement processes.
Technical Context
The SS24FSH employs a single-die Schottky barrier structure enabling fast recovery (no minority carrier storage) and low conduction loss. Its 40 V VRRM rating targets mid-voltage DC/DC stages where efficiency and thermal performance are critical.
Thermal design is supported by validated RθJL = 18°C/W and RθJA = 75°C/W (on 5 mm × 5 mm Cu pad), while its 0.40 V typical VF at 1 A/25°C directly reduces power dissipation in high-frequency switching topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Forward Current (IF) | 2 A continuous - supports compact SMPS output rectification without forced air cooling |
| Peak Reverse Voltage (VRRM) | 40 V - suitable for 12–24 V input DC/DC converters with margin against transients |
| Forward Voltage (VF) | 0.46 V max at 2 A, 25°C - enables >92% efficiency in 5 V output buck converters |
| Surge Current (IFSM) | 50 A (8.3 ms half-sine) - withstands startup inrush and load dump events |
| Junction Temperature (TJ) | -55°C to +150°C - enables operation in under-hood automotive environments |
| Junction Capacitance (CJ) | 124 pF at 1 MHz, 4 V - minimizes switching node ringing in >500 kHz designs |
| Thermal Resistance (RθJL) | 18°C/W - allows direct PCB copper pad heat sinking without thermal vias |
Pinout & Package
Package: SOD-128 - surface-mount, molded plastic case with matte tin-plated leads, polarity indicated by cathode band, weight 0.028 g, UL 94V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current terminal | Connected to lower-potential side (e.g., switch node or ground return) in buck/flyback outputs |
| Cathode | Output current terminal | Connected to output rail; cathode band marks this terminal for automated optical inspection |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Low forward voltage | 0.40 V typ. at 1 A/25°C - reduces conduction loss by ≥35% vs. comparable Si diodes |
| High surge current capability | 50 A IFSM (8.3 ms) - eliminates need for parallel diodes in transient-prone adapters |
| Moisture sensitivity level 1 | No bake requirement before reflow - compatible with standard SMT assembly lines |
| Halogen-free construction | Complies with IEC 61249-2-21 - meets RoHS and automotive material declaration requirements |
Applications
| Automotive On-Board DC/DC Converter | Industrial SMPS Secondary Rectification |
|---|---|
Use Scenario: 12 V to 5 V/3.3 V conversion in vehicle infotainment ECUs. IC Role / Device Role / Timing Role: Output rectifier in synchronous buck converter secondary stage. Use Value: AEC-Q101 qualification and 150°C TJ rating ensure reliability in engine bay-adjacent mounting locations. |
Use Scenario: High-efficiency 48 V to 12 V isolation-less DC/DC module for factory automation controllers. IC Role / Device Role / Timing Role: Freewheeling diode in active clamp flyback topology. Use Value: 0.46 V VF at 2 A reduces power loss by 1.2 W vs. legacy Schottkys, lowering heatsink requirements. |
| USB-C PD Adapter Output Stage | LED Driver Constant-Current Loop |
Use Scenario: Secondary-side rectification in 65 W USB-C power adapter with GaN primary. IC Role / Device Role / Timing Role: Synchronous rectifier replacement in QR flyback output stage. Use Value: 124 pF CJ minimizes capacitive coupling noise into feedback loop, improving regulation stability. |
Use Scenario: Low-loss freewheel path in 24 V constant-current LED driver for street lighting. IC Role / Device Role / Timing Role: Flyback snubber diode in inductive LED current control circuit. Use Value: 50 A IFSM handles LED short-circuit transients without failure, extending system MTBF. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-2EY40-M3/57T | Same SOD-128 package, 2 A/40 V, but VF = 0.52 V max at 2 A - 13% higher conduction loss | Not AEC-Q101 qualified - limited to commercial-grade industrial use | Preferred where cost is prioritized over automotive compliance or thermal margin |
| ON Semiconductor SB240-E3/54 | SOD-123 package (smaller footprint), 2 A/40 V, VF = 0.54 V max - higher thermal resistance (RθJA = 120°C/W) | Limited surge rating (30 A IFSM) - unsuitable for high-inrush adapter designs | Selected when board space is constrained and peak surge stress is low |
Compared with VS-2EY40-M3/57T and SB240-E3/54, the SS24FSH delivers superior thermal performance (18°C/W RθJL), lower VF, and automotive qualification - making it optimal for space-constrained, high-reliability DC/DC applications where efficiency and robustness are co-prioritized.
Availability
SS24FSH is available at Aetrix Electronics and suitable for switching mode power supplies, automotive on-board DC/DC converters, and LED lighting applications requiring stable component supply across production lifecycles.
Supply support for SS24FSH 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 SS24FSH belongs to TSC's FSH-series Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in space-constrained and thermally demanding environments.
FAQ
What is the maximum junction temperature rating for SS24FSH?
The SS24FSH has a maximum junction temperature (TJ) of +150°C, verified per absolute maximum ratings in the official datasheet. This rating enables reliable operation in under-hood automotive applications and high-ambient industrial environments. Derating curves confirm usable current capacity down to 1.2 A at 125°C ambient on standard PCB layouts. The SS24FSH must not exceed this limit during steady-state or transient conditions to maintain long-term reliability.
Is SS24FSH suitable for automotive applications?
Yes, the SS24FSH is AEC-Q101 qualified, meaning it has passed rigorous stress tests including high-temperature reverse bias, temperature cycling, and unbiased highly accelerated stress testing. This certification confirms suitability for automotive power systems such as body control modules and infotainment DC/DC converters. The SS24FSH's -55°C to +150°C operating range and moisture sensitivity level 1 further support automotive manufacturing and field reliability requirements.
What is the forward voltage of SS24FSH at 2 A and 125°C?
The SS24FSH exhibits a forward voltage of 0.40 V (typical) and 0.56 V (maximum) at 2 A and 125°C, per electrical specifications table. This low, temperature-stable VF ensures consistent efficiency across wide thermal ranges - critical for thermally coupled designs like enclosed LED drivers. The SS24FSH's VF decreases slightly with rising temperature, a characteristic behavior of Schottky diodes that improves thermal runaway immunity.
Does SS24FSH have a defined pinout or polarity marking?
Yes, the SS24FSH uses a two-terminal SOD-128 package with unambiguous polarity: the cathode is marked by a visible band on the device body. The anode is the unmarked end. This marking aligns with JEDEC standards and supports automated optical inspection during SMT assembly. The SS24FSH's pinout is non-reversible - incorrect orientation results in open-circuit behavior and potential system failure.
What packaging format is available for SS24FSH?
The SS24FSH is supplied in tape-and-reel packaging with 14,000 units per reel, compliant with EIA-481 standards. This format supports high-speed pick-and-place equipment and ensures consistent feeding in automated SMT lines. The SS24FSH's SOD-128 footprint and matte tin-plated leads are optimized for lead-free reflow soldering per J-STD-002, and its moisture sensitivity level 1 eliminates pre-bake requirements prior to assembly.
SS24FSH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-128
- 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:
- 570 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 200 µA @ 40 V
- Capacitance @ Vr, F:
- 124pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-128
- Operating Temperature - Junction:
- -55°C ~ 150°C
SS24FSH FAQ
1.How can I place an order for SS24FSH through Aetrix?
Please submit a Request for Quotation (RFQ) for SS24FSH 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 SS24FSH reliable?
The price and inventory of SS24FSH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS24FSH is usually 5 days.
3.What payment methods are accepted for SS24FSH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS24FSH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS24FSH?
SS24FSH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS24FSH 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 SS24FSH?
For technical support, including SS24FSH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS24FSH requirements.
6.How does Aetrix verify that SS24FSH is sourced from the original manufacturer or authorized distributors?
All SS24FSH 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 SS24FSH meets industry standards.
7.What is the process for return or replacement of SS24FSH?
All SS24FSH units undergo pre-shipment inspection (PSI). If there is an issue with SS24FSH, 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 SS24FSH part is unused and in its original packaging.
Return procedure for SS24FSH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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