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Taiwan Semiconductor Corporation SS19HR3G
- Part No.:
- SS19HR3G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SS19HR3G.pdf
- Description:
- DIODE SCHOTTKY 90V 1A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,905
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Product details
Overview
SS19HR3G from Taiwan Semiconductor is a 1A, 90V Schottky barrier surface-mount rectifier in DO-214AC (SMA) package, optimized for high-efficiency DC/DC conversion with 0.80V forward voltage at 1A and 25°C, 100μA reverse leakage at rated VRRM, and 40A peak surge current capability. It serves as a primary output rectifier in compact AC/DC adapters and SMPS.
For engineers reviewing the SS19HR3G datasheet, SS19HR3G pinout, SS19HR3G application, or SS19HR3G equivalent, key selection criteria include its 90V VRRM, low VF at elevated temperature (0.70V @ 100°C), 2mA IR max at 125°C, junction-to-lead thermal resistance of 28°C/W, and RoHS/halogen-free compliance for consumer power electronics.
Technical Context
The SS19HR3G implements a single-die Schottky junction structure with guard ring overvoltage protection, enabling stable operation up to 150°C junction temperature. Its 10,000 V/µs critical dV/dt rating supports fast-switching topologies without parasitic turn-on.
Designed for surface-mount automated assembly, it features matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance. Polarity is unambiguously indicated by a cathode band on the DO-214AC molded body.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 90 V - Maximum repetitive reverse voltage; defines safe operating limit in flyback or buck output stages |
| IF | 1 A - Continuous forward current rating; supports 12W–15W output power in typical 5V/1A adapter designs |
| VF @ 1A, 25°C | 0.80 V - Low conduction loss; reduces power dissipation to ≤0.8W at full load |
| IR @ 90V, 25°C | 100 μA - Minimal leakage; preserves efficiency in standby mode of energy-efficient power supplies |
| IFSM | 40 A - Withstands 8.3ms half-sine surge; handles cold-start inrush in offline converters |
| TJ max | 150 °C - Extended thermal range enables operation in enclosed, thermally constrained enclosures |
| RθJL | 28 °C/W - Efficient heat transfer to PCB copper; allows use without heatsink in <10W applications |
Pinout & Package
Package: DO-214AC (SMA), surface-mount plastic case with cathode band marking; dimensions per JEDEC DO-214AC Issue D; weight ≈0.060g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current terminal | Connected to switching node or transformer secondary; accepts pulsed current up to 40A |
| Cathode | Output current terminal | Delivers regulated DC output; marked by visible band; ties to output capacitor negative |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Prevents edge breakdown under transient overvoltage, improving reliability in unregulated input conditions |
| Moisture sensitivity level 1 | Zero bake requirement before reflow; compatible with standard SMT assembly lines without dry-pack handling |
| UL 94V-0 molding compound | Meets flammability safety standards for consumer end-equipment including monitors and TVs |
| Halogen-free & RoHS compliant | Supports environmental compliance for global markets including EU and China RoHS II |
Applications
| AC/DC Adapters | Monitor Power Supplies |
|---|---|
Use Scenario: 5V/1A wall adapter for set-top boxes and IoT gateways. IC Role / Device Role / Timing Role: Output rectifier in secondary-side synchronous or diode-based flyback converter. Use Value: 0.80V VF minimizes conduction loss, enabling >85% efficiency at light load while meeting CoC Tier 2 requirements. | Use Scenario: Internal 12V/0.8A auxiliary supply in LCD monitor mainboard. IC Role / Device Role / Timing Role: Secondary-side freewheeling diode in forward converter topology. Use Value: 40A IFSM withstands startup surges from large bulk capacitors; 150°C TJ rating ensures stability during extended display-on operation. |
| TV Power Modules | DC/DC Converter Outputs |
Use Scenario: Standby 5V rail generation in smart TV power board. IC Role / Device Role / Timing Role: Low-leakage rectifier in quasi-resonant flyback standby stage. Use Value: 100μA IR at 90V enables <30mW no-load consumption, supporting Energy Star 8.0 standby limits. | Use Scenario: 3.3V/1A point-of-load rectification in FPGA or SoC power tree. IC Role / Device Role / Timing Role: Synchronous rectifier replacement in discrete buck converter. Use Value: RθJL = 28°C/W allows direct thermal coupling to 1oz copper pour, eliminating need for thermal vias in space-constrained modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS19HE3/73 (Vishay) | Same 90V VRRM, 1A IF, but VF = 0.75V @ 25°C; slightly lower IR (50μA) | Identical DO-214AC footprint; marginally better efficiency at room temperature | Select when optimizing for lowest possible conduction loss in ambient-cooled designs |
| SB190-E3/54 (Vishay) | 90V VRRM, 1A IF, VF = 0.85V @ 25°C; higher IR (200μA @ 25°C) | DO-214AA (SMB) package - larger footprint and higher RθJA | Choose only if existing layout uses SMB and thermal derating permits higher VF |
Compared with SS19HE3/73 and SB190-E3/54, the SS19HR3G delivers balanced performance: lower VF than SB190-E3/54 for improved efficiency, tighter IR spec than generic SMB alternatives, and Taiwan Semiconductor's moisture level 1 qualification for simplified manufacturing flow.
Availability
SS19HR3G is available at Aetrix Electronics and suitable for AC/DC adapters, monitor power supplies, and TV power modules requiring stable component supply, consistent parametric performance across production lots, and long-term lifecycle support.
Supply support for SS19HR3G 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 rectifiers, TVS devices, and MOSFETs for industrial and consumer applications.
The SS12–SS115 family was designed specifically for cost-sensitive, high-volume AC/DC and DC/DC power conversion where low VF, robust surge capability, and SMT manufacturability are prioritized over ultra-low leakage or ultra-high voltage ratings.
FAQ
What is the maximum junction temperature rating for SS19HR3G?
The SS19HR3G has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table in the official Taiwan Semiconductor datasheet R2305. This allows continuous operation in thermally demanding environments such as enclosed TV power supplies or high-ambient industrial adapters. The SS19HR3G maintains specified electrical parameters up to this limit, with derated forward current above 125°C.
Does SS19HR3G have a halogen-free and RoHS-compliant construction?
Yes, the SS19HR3G is explicitly stated as halogen-free and RoHS compliant in the "Features" section of the Taiwan Semiconductor SS12–SS115 datasheet R2305. This compliance is confirmed by material declarations and applies to both the die attach, molding compound, and matte tin-plated leads - satisfying EU RoHS Directive 2011/65/EU and China RoHS II requirements.
What is the forward voltage of SS19HR3G at 1A and 100°C junction temperature?
The forward voltage (VF) of SS19HR3G is 0.70 V at 1A and 100°C junction temperature, as specified in the "ELECTRICAL SPECIFICATIONS" table of the R2305 datasheet. This value reflects real-world conduction loss under elevated thermal stress and is critical for calculating power dissipation in high-temperature operating conditions like sealed monitor power boards.
Is SS19HR3G suitable for automated pick-and-place assembly?
Yes, SS19HR3G is explicitly optimized for automated placement, as noted in the "FEATURES" list of the R2305 datasheet. Its DO-214AC (SMA) package, matte tin-plated leads, and moisture sensitivity level 1 classification ensure compatibility with standard SMT reflow processes without pre-baking, making it ideal for high-throughput manufacturing of consumer power supplies.
What is the reverse leakage current specification for SS19HR3G at rated 90V and 125°C?
The reverse leakage current (IR) for SS19HR3G is specified as 2 mA maximum at 90V reverse voltage and 125°C junction temperature, per the "ELECTRICAL SPECIFICATIONS" table in the R2305 datasheet. This parameter directly impacts standby power consumption in energy-regulated applications such as Energy Star–certified adapters and must be accounted for in no-load efficiency calculations.
SS19HR3G 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SS19HR3G FAQ
1.How can I place an order for SS19HR3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SS19HR3G 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 SS19HR3G reliable?
The price and inventory of SS19HR3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS19HR3G is usually 5 days.
3.What payment methods are accepted for SS19HR3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS19HR3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS19HR3G?
SS19HR3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS19HR3G 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 SS19HR3G?
For technical support, including SS19HR3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS19HR3G requirements.
6.How does Aetrix verify that SS19HR3G is sourced from the original manufacturer or authorized distributors?
All SS19HR3G 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 SS19HR3G meets industry standards.
7.What is the process for return or replacement of SS19HR3G?
All SS19HR3G units undergo pre-shipment inspection (PSI). If there is an issue with SS19HR3G, 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 SS19HR3G part is unused and in its original packaging.
Return procedure for SS19HR3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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