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Taiwan Semiconductor Corporation SS14 R3G
- Part No.:
- SS14 R3G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SS14 R3G.pdf
- Description:
- DIODE SCHOTTKY 40V 1A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,937
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Product details
Overview
SS14 R3G from Taiwan Semiconductor is a 1A, 40V Schottky barrier surface-mount rectifier in DO-214AC (SMA) package, featuring 0.50V forward voltage at 1A/25°C, 40A peak surge current, and junction temperature rating up to +125°C. It serves as a low-loss freewheeling or output rectifier in compact DC/DC converters and AC/DC adapters.
For engineers reviewing the SS14 R3G datasheet, SS14 R3G pinout, SS14 R3G application, or SS14 R3G equivalent, key selection criteria include its 40V VRRM rating, low VF for thermal efficiency, SMA package compatibility with automated assembly, and moisture sensitivity level 1 compliance per J-STD-020.
Technical Context
The SS14 R3G implements a single-die Schottky junction optimized for high-frequency switching applications. Its 10,000 V/µs dV/dt rating supports fast transient immunity in SMPS flyback and buck topologies, while the guard ring structure enhances overvoltage robustness without compromising forward conduction.
Thermal performance is defined by 28°C/W junction-to-lead and 88°C/W junction-to-ambient resistance. The device operates across –55°C to +125°C junction range, with reverse leakage limited to 200 µA at 25°C and 6 mA at 100°C under rated 40V reverse bias.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse voltage; defines safe blocking capability in 36–42 V nominal input rails |
| IF | 1 A - Continuous forward current; supports output stages up to ~12 W at 12 V with adequate heatsinking |
| VF @ 1A, 25°C | 0.50 V - Low conduction loss; reduces power dissipation to 0.5 W at full load, easing thermal design |
| IFSM | 40 A - Peak non-repetitive surge current; withstands inrush and fault transients in adapter primary-side rectification |
| IR @ 40V, 25°C | 200 µA - Low reverse leakage; minimizes standby power loss in energy-efficient designs |
| TJ max | +125°C - Maximum operating junction temperature; enables use in sealed enclosures without active cooling |
| RθJL | 28°C/W - Junction-to-lead thermal resistance; allows direct PCB copper pour heat spreading to improve reliability |
Pinout & Package
Package: DO-214AC (SMA), surface-mount plastic case with matte tin-plated leads, cathode indicated by band. Weight: 0.060 g. Meets UL 94V-0 and JESD 201 Class 2 whisker requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck, secondary winding in flyback) |
| Cathode | Forward current exit / reverse-blocking terminal | Connected to output rail or positive bus; polarity marked by visible band on body |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Improves ruggedness against voltage transients and edge breakdown without increasing VF |
| Moisture sensitivity level 1 | Enables unlimited floor life before reflow; no baking required prior to assembly |
| Halogen-free & RoHS compliant | Meets environmental compliance for consumer and industrial end-equipment shipments |
| High surge current capability | Withstands 40 A for 8.3 ms half-sine wave-critical for input rectifier survivability during cold-start |
Applications
| Switching Mode Power Supply (SMPS) | AC/DC Adapter |
|---|---|
Use Scenario: Secondary-side synchronous rectification in 5–24 V output flyback converters. IC Role / Device Role / Timing Role: Freewheeling diode providing unidirectional current path during MOSFET off-time. Use Value: 0.50 V VF reduces conduction loss by ~30% vs. standard PN diodes, improving efficiency by 1–2% at full load. | Use Scenario: Output rectification in compact wall-mounted USB-C PD adapters. IC Role / Device Role / Timing Role: Main output rectifier handling continuous 1 A load with minimal thermal rise. Use Value: DO-214AC footprint enables high-density layout; 125°C TJ rating supports operation in thermally constrained enclosures. |
| Monitor Power Supply | TV Backlight Converter |
Use Scenario: Auxiliary 5 V/12 V rail generation in LCD monitor internal SMPS. IC Role / Device Role / Timing Role: Output rectifier in self-oscillating or PWM-controlled forward converter. Use Value: Low IR (200 µA) ensures negligible standby current draw, aiding Energy Star compliance. | Use Scenario: LED string current path control in CCFL or LED backlight inverters. IC Role / Device Role / Timing Role: Reverse-biased clamping diode during transformer reset phase. Use Value: 10,000 V/µs dV/dt rating prevents false turn-on during fast voltage transitions in resonant topologies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MBR140 (ON Semiconductor) | Same 1A/40V rating, VF = 0.55 V @ 1A, DO-214AC package, but higher IR (500 µA @ 40V) | Suitable where slightly higher leakage is acceptable; less optimal for ultra-low-standby designs | Select MBR140 if sourcing flexibility is prioritized and 0.05 V VF penalty is tolerable |
| SB140 (Good-Ark) | Identical VRRM/IF ratings, VF = 0.52 V @ 1A, same DO-214AC, but TJ max = +125°C only (no 150°C variant) | Drop-in replacement in most 125°C-limited designs; not qualified for extended-temp industrial use | Choose SB140 for cost-sensitive consumer applications with standard ambient conditions |
Compared with MBR140 and SB140, the SS14 R3G delivers the lowest VF (0.50 V) and tightest IR spec (200 µA), making it preferred for high-efficiency, low-standby-power adapter and monitor supply designs where thermal headroom is constrained.
Availability
SS14 R3G is available at Aetrix Electronics and suitable for switching mode power supplies, AC/DC adapters, and monitor power systems requiring stable component supply, consistent parametric performance, and full RoHS/halogen-free compliance.
Supply support for SS14 R3G 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 power management and industrial markets since 1979.
The SS14 R3G belongs to TSC's SS1x Schottky rectifier product line, engineered specifically for high-efficiency, surface-mount DC/DC and AC/DC conversion in space-constrained consumer and computing power supplies.
FAQ
What is the maximum junction temperature rating for SS14 R3G?
The SS14 R3G has a maximum junction temperature (TJ max) of +125°C, as specified in the Absolute Maximum Ratings table. This rating applies across the full operating current range and enables reliable operation in enclosed power supplies without forced airflow. Derating curves in the datasheet confirm usable current capacity down to zero at 125°C ambient when mounted on standard FR-4 with 1-inch² copper pour.
Does SS14 R3G have a halogen-free and RoHS-compliant construction?
Yes, SS14 R3G is both halogen-free and RoHS compliant, as explicitly stated in the FEATURES section of the official Taiwan Semiconductor datasheet (Version R2305). The molding compound meets UL 94V-0, and terminals are matte tin plated per J-STD-002, ensuring compatibility with lead-free reflow processes and environmental regulations for global market access.
What is the forward voltage of SS14 R3G at 1 A and 100°C junction temperature?
The forward voltage (VF) of SS14 R3G is 0.40 V at 1 A and TJ = 100°C, per the Electrical Specifications table. This lower VF at elevated temperature improves thermal stability in high-ambient environments and reduces power loss compared to room-temperature measurements, supporting consistent performance in real-world operating conditions.
Is SS14 R3G suitable for use in automotive applications?
No, SS14 R3G is not qualified for automotive applications. Taiwan Semiconductor's documentation explicitly states that products in the SS1x series "are not designed for use in medical, life-saving, or life-sustaining applications," and no AEC-Q101 qualification or automotive-grade screening is referenced. For automotive use, designers must select components with formal AEC-Q101 certification and extended temperature support.
What packaging format is available for SS14 R3G?
SS14 R3G is supplied in 7,500-piece tape-and-reel packaging per the Ordering Information section. The DO-214AC (SMA) package is compatible with standard SMT pick-and-place equipment, and the moisture sensitivity level 1 rating eliminates pre-bake requirements, streamlining high-volume manufacturing flow for SS14 R3G.
SS14 R3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 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:
- 200 µA @ 40 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 125°C
SS14 R3G FAQ
1.How can I place an order for SS14 R3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SS14 R3G 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 SS14 R3G reliable?
The price and inventory of SS14 R3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS14 R3G is usually 5 days.
3.What payment methods are accepted for SS14 R3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS14 R3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS14 R3G?
SS14 R3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS14 R3G 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 SS14 R3G?
For technical support, including SS14 R3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS14 R3G requirements.
6.How does Aetrix verify that SS14 R3G is sourced from the original manufacturer or authorized distributors?
All SS14 R3G 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 SS14 R3G meets industry standards.
7.What is the process for return or replacement of SS14 R3G?
All SS14 R3G units undergo pre-shipment inspection (PSI). If there is an issue with SS14 R3G, 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 SS14 R3G part is unused and in its original packaging.
Return procedure for SS14 R3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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