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Taiwan Semiconductor Corporation 1N4448WS RRG
- Part No.:
- 1N4448WS RRG
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
1N4448WS RRG.pdf
- Description:
- DIODE GP 100V 150MA SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:16,980
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Product details
Overview
1N4448WS RRG from Taiwan Semiconductor is a high-speed SMD switching diode in SOD-323F package, rated for 150 mA forward current, 100 V repetitive peak reverse voltage, and 4 ns reverse recovery time. It serves as a fast-switching rectifier in DC/DC converters, SMPS, and lighting control circuits where low forward voltage drop and minimal charge storage are critical.
For engineers reviewing the 1N4448WS RRG datasheet, 1N4448WS RRG pinout, 1N4448WS RRG application, or 1N4448WS RRG equivalent, key selection criteria include its 1.00 V max VF at 100 mA, 4 pF junction capacitance, 300 mA non-repetitive surge rating, RoHS-compliant matte tin terminals, and J-STD-020 Level 1 moisture sensitivity.
Technical Context
This discrete silicon switching diode uses a single-die planar construction optimized for high-speed switching in low-power signal and power-path applications. Its 4 ns trr and 4 pF CJ enable clean edge transitions in kHz–MHz-range switching nodes, while the 150°C maximum junction temperature supports operation in thermally constrained PCB layouts.
The device operates with a cathode-band polarity indicator and exhibits low leakage (≤5 µA at 75 V VR), making it suitable for precision clamping and sampling circuits where reverse conduction must be tightly controlled across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Forward Current (IF) | 150 mA - continuous DC current handling capacity without thermal derating at 25°C ambient |
| Repetitive Peak Reverse Voltage (VRRM) | 100 V - maximum reverse bias sustainable during normal switching cycles |
| Reverse Recovery Time (trr) | 4 ns - enables efficient operation up to ~100 MHz in resonant or hard-switched topologies |
| Junction Capacitance (CJ) | 4 pF at 0 V - minimizes capacitive loading on high-impedance signal nodes and gate drives |
| Forward Voltage (VF) | 1.00 V max at IF = 100 mA - ensures low conduction loss in compact DC/DC stages |
| Surge Current (IFSM) | 300 mA for t = 1 s - withstands transient inrush during startup or fault conditions |
| Junction Temp Range (TJ) | −65°C to +150°C - supports industrial and automotive under-hood environments |
Pinout & Package
SOD-323F surface-mount plastic package with cathode band marking; 2-terminal configuration; dimensions per EIAJ ED-7500A-1 / SC-90; 4.60 mg typical weight; UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node in rectification or clamping path; requires thermal relief in high-current traces |
| Cathode | Forward current exit / reverse blocking terminal | Marked by visible band; ties to higher-potential rail or switch node; defines polarity-sensitive placement |
Key Features
| Feature | Design Value |
|---|---|
| High-speed switching | 4 ns trr enables use in >50 kHz SMPS and fast logic-level clamping without tail current |
| Low forward voltage | 1.00 V max at 100 mA reduces power loss in space-constrained 5–24 V DC/DC outputs |
| Moisture sensitivity level 1 | No bake required before reflow; compatible with standard J-STD-020 assembly processes |
| RoHS & halogen-free option | RRG suffix denotes green compound compliant with IEC 61249-2-21; no special handling needed |
| Matte tin plated leads | Guarantees solderability per J-STD-002; eliminates lead-free solder wetting issues |
Applications
| Switch-Mode Power Supply (SMPS) | LED Lighting Driver |
|---|---|
Use Scenario: High-frequency flyback auxiliary winding rectification and output freewheeling in <10 W AC/DC adapters. IC Role / Device Role: Fast-recovery output rectifier replacing Schottky diodes where leakage must be minimized. Use Value: 5 µA max IR at 75 V VR prevents standby power loss drift; 4 ns trr avoids cross-conduction in synchronous designs. | Use Scenario: Constant-current LED string switching and PWM dimming path isolation in smart bulbs and panel lights. IC Role / Device Role: High-side switch clamp and transient suppressor in buck-derived LED drivers. Use Value: 4 pF CJ limits high-frequency noise coupling into analog dimming control lines; 150°C TJ rating sustains reliability near hot LEDs. |
| On-Board DC/DC Converter | Signal-Level Clamping |
Use Scenario: Input protection and bootstrap diode in point-of-load (POL) converters for FPGAs and microcontrollers. IC Role / Device Role: Bootstrap charging path and input overvoltage clamp in 3–5 V buck regulators. Use Value: 100 V VRRM provides margin against 12 V rail transients; SOD-323F footprint saves board area vs. SOT-23. | Use Scenario: Logic-level translation and ESD protection in UART, I²C, and GPIO signal conditioning networks. IC Role / Device Role: Bidirectional clamping diode between signal line and supply/rail in mixed-voltage interfaces. Use Value: 25 nA IR at 20 V VR preserves high-impedance node integrity; cathode-band polarity ensures correct orientation in dual-diode arrays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4148WS RRG | Lower VF (1.00 V max at 10 mA vs. 1.00 V at 100 mA); identical trr, CJ, and package | Better suited for low-current signal switching; less optimal for 100 mA+ power paths | Select when operating below 20 mA average current and prioritizing lowest possible VF at light loads |
| BAT54WS RRG | Schottky architecture; VF ≈ 0.33 V at 10 mA but IR ≥ 1 µA at 20 V - 40× higher leakage | Preferred for ultra-low VF needs; unsuitable where reverse leakage must stay sub-µA | Choose only if forward loss dominates design priority and leakage tolerance exceeds 1 µA |
Compared with 1N4448WS RRG, 1N4148WS RRG trades higher conduction loss at full load for better light-load efficiency, while BAT54WS RRG sacrifices leakage performance for Schottky-level VF - neither is pin-compatible but both share SOD-323F footprint and tape/reel packaging.
Availability
1N4448WS RRG is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and on-board DC/DC converters requiring stable component supply, consistent parametric performance, and J-STD-020 Level 1 assembly compatibility.
Supply support for 1N4448WS RRG 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 semiconductor manufacturer specializing in discrete power devices, analog ICs, and optoelectronics for industrial, computing, and consumer markets.
The 1N4448WS RRG belongs to TSC's high-speed switching diode product line, engineered specifically for compact, high-efficiency power conversion and signal integrity applications in space-constrained SMT designs.
FAQ
What is the maximum reverse voltage rating for the 1N4448WS RRG?
The 1N4448WS RRG has a repetitive peak reverse voltage (VRRM) rating of 100 V. This means it can reliably block up to 100 V in reverse bias during normal switching operation at 25°C ambient. Derating applies above 25°C per the admissible power dissipation curve in the datasheet, and the device remains functional up to 75 V reverse bias with ≤5 µA leakage current.
Does the 1N4448WS RRG have a specified reverse recovery time?
Yes, the 1N4448WS RRG has a maximum reverse recovery time (trr) of 4 ns under test conditions of IF = 10 mA, IR = 60 mA, RL = 100 Ω, and IRR = 1 mA. This value is confirmed in the Electrical Specifications table and supports high-frequency switching in DC/DC converters and signal clamping applications up to approximately 100 MHz.
Is the 1N4448WS RRG RoHS compliant and halogen-free?
Yes, the 1N4448WS RRG is RoHS compliant and halogen-free. The "RRG" suffix explicitly indicates green compound meeting IEC 61249-2-21 requirements. Its matte tin-plated terminals also comply with J-STD-002 for solderability, and the entire device meets JESD 201 Class 1A whisker resistance standards.
What package type does the 1N4448WS RRG use, and what are its key mechanical features?
1N4448WS RRG uses the SOD-323F package - a 2-pin, ultra-small surface-mount outline per EIAJ ED-7500A-1 and SC-90 standards. Key features include UL 94V-0 flammability-rated molding compound, cathode band polarity marking, 4.60 mg typical weight, and J-STD-020 Level 1 moisture sensitivity - eliminating bake requirements prior to reflow.
How does the forward voltage of the 1N4448WS RRG compare to the 1N4148WS RRG at 100 mA?
The 1N4448WS RRG specifies a maximum forward voltage (VF) of 1.00 V at IF = 100 mA and TJ = 25°C, whereas the 1N4148WS RRG specifies 1.00 V max at IF = 10 mA. At 100 mA, the 1N4148WS RRG typically exhibits higher VF - making the 1N4448WS RRG the preferred choice for higher-current switching paths where conduction loss must be minimized.
1N4448WS RRG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SC-90, SOD-323F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 150mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 100 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 4 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 75 V
- Capacitance @ Vr, F:
- 4pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323F
- Operating Temperature - Junction:
- -65°C ~ 150°C
1N4448WS RRG FAQ
1.How can I place an order for 1N4448WS RRG through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4448WS RRG 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 1N4448WS RRG reliable?
The price and inventory of 1N4448WS RRG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4448WS RRG is usually 5 days.
3.What payment methods are accepted for 1N4448WS RRG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4448WS RRG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4448WS RRG?
1N4448WS RRG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4448WS RRG 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 1N4448WS RRG?
For technical support, including 1N4448WS RRG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4448WS RRG requirements.
6.How does Aetrix verify that 1N4448WS RRG is sourced from the original manufacturer or authorized distributors?
All 1N4448WS RRG 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 1N4448WS RRG meets industry standards.
7.What is the process for return or replacement of 1N4448WS RRG?
All 1N4448WS RRG units undergo pre-shipment inspection (PSI). If there is an issue with 1N4448WS RRG, 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 1N4448WS RRG part is unused and in its original packaging.
Return procedure for 1N4448WS RRG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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