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Taiwan Semiconductor Corporation SS19 R3G
- Part No.:
- SS19 R3G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SS19 R3G.pdf
- Description:
- DIODE SCHOTTKY 90V 1A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,946
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Product details
Overview
SS19 R3G from Taiwan Semiconductor is a 1A, 90V Schottky barrier surface-mount rectifier in DO-214AC (SMA) package, featuring 0.80V forward voltage at 1A/25°C, 40A peak surge current, and 10,000 V/µs critical dV/dt rating. It serves as a high-efficiency freewheeling or output rectifier in compact DC/DC converters.
For engineers reviewing the SS19 R3G datasheet, SS19 R3G pinout, SS19 R3G application, or SS19 R3G equivalent, key selection criteria include its 90V VRRM, low VF at elevated temperature (0.70V @ 1A/100°C), 2 mA reverse leakage @ 125°C, and DO-214AC thermal resistance (RθJA = 88°C/W).
Technical Context
The SS19 R3G implements a single-die Schottky junction optimized for low conduction loss in medium-voltage switching power supplies. Its guard ring structure enhances ruggedness against transient overvoltage, while the matte tin-plated leads ensure reliable solderability per J-STD-002.
Rated for continuous operation up to 150°C junction temperature and moisture sensitivity level 1 (J-STD-020), it supports high-density automated assembly without baking requirements. The device exhibits 28°C/W junction-to-lead thermal resistance, enabling effective heat transfer to PCB copper in constrained layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 90 V - Maximum repetitive reverse voltage; defines safe blocking capability in 48V–72V bus applications |
| VF @ 1A, 25°C | 0.80 V - Directly reduces conduction loss and improves efficiency in 12V–24V output stages |
| IFSM | 40 A - Withstands short-duration inrush or fault currents without degradation |
| RθJA | 88 °C/W - Enables thermal design with standard 1-oz copper on FR-4 without forced air |
| IR @ 90V, 125°C | 2 mA - Low leakage preserves efficiency in high-temperature environments like enclosed adapters |
| dV/dt | 10,000 V/µs - Resists false turn-on during fast-switching transients in synchronous rectifier circuits |
Pinout & Package
DO-214AC (SMA) surface-mount package with cathode indicated by molded band; body dimensions 4.60 × 2.83 × 2.30 mm (L × W × H); weight ≈ 0.060 g; RoHS-compliant, halogen-free molding compound rated UL 94V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point under forward bias | Connected to lower-potential node (e.g., switch node in buck converter) |
| Cathode | Current exit point under forward bias; marked by band | Connected to output rail or filter capacitor positive terminal |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring protection | Prevents edge breakdown under voltage transients, improving reliability in SMPS with poor layout margins |
| Moisture sensitivity level 1 | Eliminates pre-bake requirement before reflow, reducing manufacturing cost and cycle time |
| High surge current capability | Supports robust operation during cold-start or output short-circuit events without parameter shift |
| Low forward voltage at 100°C | 0.70 V ensures stable efficiency across full industrial temperature range (−55°C to +150°C) |
Applications
| Switching Mode Power Supply (SMPS) | DC/DC Converters |
|---|---|
Use Scenario: Secondary-side rectification in 36–75W offline flyback or forward converters. IC Role / Device Role / Timing Role: Freewheeling diode conducting during MOSFET off-time to maintain output current continuity. Use Value: 0.80V VF minimizes conduction loss, directly increasing overall efficiency by ~0.8% vs. higher-VF alternatives at 1A load. | Use Scenario: Output rectification in isolated 12V/1A telecom DC/DC modules. IC Role / Device Role / Timing Role: Unidirectional current path delivering regulated output after transformer secondary winding. Use Value: 90V VRRM provides 2× margin over 48V nominal input, accommodating reflected spikes without avalanche stress. |
| Adapter Power Supplies | Flat Panel Display Power |
Use Scenario: Compact wall-adapters powering consumer electronics (e.g., set-top boxes, routers). IC Role / Device Role / Timing Role: Output rectifier converting high-frequency AC from transformer secondary to DC. Use Value: DO-214AC footprint enables dense PCB layout; 0.060g mass supports lightweight mechanical design. | Use Scenario: Auxiliary rail rectification in LCD TV mainboard power tree (e.g., 5V standby, 12V logic). IC Role / Device Role / Timing Role: Isolated low-current DC source generation from auxiliary transformer winding. Use Value: 2 mA IR @ 125°C prevents excessive standby power draw in thermally confined display enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS19-E3/5AT (Vishay) | Same 90V VRRM, 1A IF, DO-214AC; VF = 0.82V @ 1A/25°C; RθJA = 90°C/W | Slightly higher thermal resistance; identical mounting and footprint | Acceptable where 0.02V higher VF is tolerable and Vishay supply chain preference applies |
| SS19H (ON Semiconductor) | 90V VRRM, 1A IF, DO-214AC; VF = 0.79V @ 1A/25°C; IR = 1.5 mA @ 125°C | Lower leakage at high temperature; same thermal performance (RθJA = 88°C/W) | Preferred when minimizing standby current in thermally stressed environments is critical |
Compared with SS19 R3G, the Vishay SS19-E3/5AT trades marginally higher conduction loss for broader global distribution, while ON Semiconductor's SS19H offers tighter reverse leakage control-making it advantageous for high-temperature adapter designs where <2 mA leakage is mandatory.
Availability
SS19 R3G is available at Aetrix Electronics and suitable for switching mode power supplies, DC/DC converters, and adapter power supplies requiring stable component supply, consistent parametric performance, and long-term manufacturability.
Supply support for SS19 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 SS19 R3G belongs to TSC's SS1x Schottky rectifier product line, engineered specifically for high-efficiency, surface-mount secondary-side rectification in cost-sensitive, space-constrained AC/DC and DC/DC power conversion systems.
FAQ
What is the maximum junction temperature rating for SS19 R3G?
The SS19 R3G has a maximum junction temperature (TJ) rating of +150°C, validated per absolute maximum ratings in the official TSC datasheet revision R2305. This allows continuous operation in high-ambient environments such as enclosed power adapters or industrial DC/DC modules. Derating curves confirm usable current capacity down to 0.5A at 150°C ambient with standard PCB copper.
Does SS19 R3G meet RoHS and halogen-free compliance requirements?
Yes, SS19 R3G is RoHS compliant and halogen-free, as explicitly stated in the "Features" section of the TSC SS12–SS115 datasheet (R2305). The molding compound meets UL 94V-0 flammability rating, and terminals are matte tin plated per J-STD-002 for lead-free solder compatibility-ensuring full regulatory alignment for EU and global markets.
What is the reverse leakage current of SS19 R3G at 90V and 125°C?
The SS19 R3G exhibits a maximum reverse leakage current (IR) of 2 mA at rated VRRM = 90V and junction temperature of 125°C, per electrical specifications table in the TSC datasheet. This value is confirmed under 30ms pulse test conditions and reflects real-world behavior in thermally demanding applications like flat-panel display power rails.
Is SS19 R3G suitable for use in automotive applications?
No, SS19 R3G is not qualified for automotive applications. Per TSC's official notice on page 8 of the SS12–SS115 datasheet (R2305), these products are "not designed for use in medical, life-saving, or life-sustaining applications," and no AEC-Q101 qualification data is published. For automotive-grade Schottky rectifiers, consult TSC's AEC-Q101-certified product families separately.
What is the marking code printed on the SS19 R3G device body?
The SS19 R3G is marked with "SS19" on the device body, as specified in the "Absolute Maximum Ratings" table and "Marking Diagram" section of the TSC SS12–SS115 datasheet (R2305). The "R3G" suffix denotes tape-and-reel packaging (7,500 pcs/reel) and green compound; the visible top-side marking remains "SS19" only.
SS19 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):
- 90 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 800 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 90 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SS19 R3G FAQ
1.How can I place an order for SS19 R3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SS19 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 SS19 R3G reliable?
The price and inventory of SS19 R3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS19 R3G is usually 5 days.
3.What payment methods are accepted for SS19 R3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS19 R3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS19 R3G?
SS19 R3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS19 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 SS19 R3G?
For technical support, including SS19 R3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS19 R3G requirements.
6.How does Aetrix verify that SS19 R3G is sourced from the original manufacturer or authorized distributors?
All SS19 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 SS19 R3G meets industry standards.
7.What is the process for return or replacement of SS19 R3G?
All SS19 R3G units undergo pre-shipment inspection (PSI). If there is an issue with SS19 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 SS19 R3G part is unused and in its original packaging.
Return procedure for SS19 R3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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