My Inquiry
My Account
Taiwan Semiconductor Corporation TS4448 RGG
- Part No.:
- TS4448 RGG
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- 0603 (1608 Metric)
- Datasheet:
-
TS4448 RGG.pdf
- Description:
- 603, 100V, 0.125A, SWITCHING DIO
- Quantity:
- Payment:
- Shipping:
Inventory:621
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TS4448 RGG from Taiwan Semiconductor is a surface-mount silicon switching diode in 0603 package, rated for 125 mA average forward current, 100 V repetitive peak reverse voltage, and 1.0 A non-repetitive surge current. It features low forward voltage (1.0 V at 100 mA), low junction capacitance (9 pF), and operates across –40°C to +125°C junction temperature range. It is used in compact DC-DC converter stages of switching mode power supplies.
For engineers reviewing the TS4448 RGG datasheet, TS4448 RGG pinout, TS4448 RGG application, or TS4448 RGG equivalent, key selection criteria include its 0603 footprint compatibility, 100 V VRRM, 125 mA IF(AV), low 1.0 V VF at rated current, and halogen-free green compound compliance per IEC 61249-2-21.
Technical Context
This discrete switching diode employs a single-die silicon PN junction optimized for high-speed switching in low-power SMPS topologies. Its 666°C/W junction-to-ambient thermal resistance reflects the inherent thermal limitation of the 0603 package, requiring careful PCB copper area design for sustained 125 mA operation.
The device exhibits low dynamic forward resistance (≤10 Ω at 10 mA) and minimal reverse leakage (≤100 nA at 80 V), enabling efficient flyback and buck converter freewheeling paths where fast recovery and low conduction loss are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF(AV) | 125 mA - maximum continuous forward current sustainable with proper PCB thermal relief |
| VRRM | 100 V - peak reverse voltage the diode blocks without breakdown in repetitive operation |
| IFSM | 1.0 A (8.3 ms) - surge current handling capability during startup or transient overload |
| VF @ 100 mA | 1.0 V max - forward voltage drop determining conduction loss in high-duty-cycle switching |
| CJ | 9 pF @ 1 MHz, 0.5 V - junction capacitance affecting high-frequency switching noise and snubber design |
| TJ Range | –40°C to +125°C - operational junction temperature window defining ambient derating limits |
Pinout & Package
Package: 0603 (1.6 × 0.8 × 0.75 mm) surface-mount ceramic chip with matte Au-plated terminals; polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to higher-potential node (e.g., switch node in buck topology); must withstand 100 V reverse bias when cathode is higher |
| Cathode | Forward current exit point / reverse blocking terminal | Marked with visible band; ties to output or ground return path; reverse leakage ≤100 nA at 80 V ensures low standby loss |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free green compound | Complies with IEC 61249-2-21 and RoHS 2011/65/EU - required for eco-compliant consumer and industrial end products |
| Moisture sensitivity level 1 | Unlimited floor life at ≤30°C/60% RH - eliminates bake requirement before reflow soldering |
| JESD 201 Class 1A whisker resistance | Prevents tin whisker growth on Au-plated terminations - ensures long-term reliability in automotive and industrial environments |
| UL 94V-0 molding compound | Self-extinguishing flammability rating - meets safety standards for enclosed power electronics |
Applications
| Buck Converter Freewheeling Diode | Flyback Secondary Rectifier |
|---|---|
Use Scenario: Used as the freewheeling diode in low-voltage, high-frequency buck regulators powering microcontrollers or sensors. IC Role / Device Role / Timing Role: Provides current path during high-side switch off-time; conducts 125 mA continuously with <1.0 V drop. Use Value: Low VF minimizes conduction loss; 9 pF CJ reduces switching node ringing and EMI generation. | Use Scenario: Rectifies isolated secondary output in offline flyback converters under 5 W load. IC Role / Device Role / Timing Role: Conducts pulsed output current with 100 V reverse blocking during primary switch on-time. Use Value: 100 V VRRM supports 230 VAC input designs with margin; low IR ensures low no-load power loss. |
| USB-C Power Delivery Clamp | Low-Power LED Driver Flyback |
Use Scenario: Placed across USB-C VBUS lines to clamp transient overvoltage spikes during hot-plug events. IC Role / Device Role / Timing Role: Acts as transient voltage suppressor with fast turn-on; leverages 1.0 A IFSM for short-duration surges. Use Value: 100 V standoff rating matches USB PD 20 V max with safety margin; low CJ avoids signal integrity degradation. | Use Scenario: Freewheeling diode in constant-current LED driver ICs driving single-string 350 mA LEDs. IC Role / Device Role / Timing Role: Handles discontinuous conduction mode (DCM) current pulses up to 125 mA average. Use Value: 0603 size enables ultra-compact layout; 125°C TJ(max) supports sealed fixture thermal environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ROHM RB520S-40T1G | VRRM = 40 V, IF(AV) = 200 mA, VF = 0.33 V typ @ 100 mA | Lower voltage rating; better efficiency at low VOUT; unsuitable for 100 V bus applications | Select when operating below 36 V and prioritizing ultra-low VF |
| Vishay ES1J | VRRM = 600 V, IF(AV) = 1 A, DO-214AC package (larger than 0603) | Higher voltage/current; through-hole or larger SMD footprint; higher thermal mass | Select for higher-power or higher-voltage SMPS where board space allows larger package |
Compared with ROHM RB520S-40T1G and Vishay ES1J, TS4448 RGG uniquely balances 100 V standoff, 0603 miniaturization, and RoHS/halogen-free compliance - making it optimal for space-constrained, eco-regulated 5–24 V SMPS designs where 40 V alternatives lack margin and 600 V parts waste board area.
Availability
TS4448 RGG is available at Aetrix Electronics and suitable for switching mode power supply (SMPS) designs, USB-C power delivery protection circuits, and low-power LED driver implementations requiring stable component supply, halogen-free compliance, and 0603 footprint consistency.
Supply support for TS4448 RGG 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 management, protection, and signal conditioning components.
The TS4448 RGG belongs to TSC's general-purpose switching diode product line, engineered for cost-sensitive, high-volume power conversion applications demanding reliable performance in compact 0603 packaging with full environmental compliance.
FAQ
What is the maximum continuous forward current rating for TS4448 RGG?
The TS4448 RGG is rated for 125 mA average forward current (IF(AV)) at 25°C ambient with adequate PCB copper thermal relief. Derating is required above 25°C per the admissible power dissipation curve; at 70°C ambient, usable IF(AV) drops to approximately 85 mA due to its 666°C/W RθJA.
Does TS4448 RGG meet RoHS and halogen-free requirements?
Yes, TS4448 RGG complies with RoHS Directive 2011/65/EU and WEEE 2002/96/EC. Its "G" suffix confirms halogen-free construction per IEC 61249-2-21, using green molding compound and matte Au-plated terminals - verified in TSC's official H1612 revision documentation.
What is the reverse leakage current specification for TS4448 RGG at 80 V?
At 80 V reverse voltage and 25°C junction temperature, TS4448 RGG exhibits a maximum reverse current (IR) of 100 nA, as specified in its electrical characteristics table. This low leakage supports energy-efficient standby operation in battery-powered or always-on power supplies.
Can TS4448 RGG be used in place of a 1N4148 in high-frequency circuits?
No - TS4448 RGG is not a direct substitute for 1N4148. While both are switching diodes, TS4448 RGG has higher VF (1.0 V vs. ~0.7 V), lower speed (no specified trr), and is optimized for power rectification, not signal clipping or logic-level switching. Its 0603 package also differs from 1N4148's DO-35.
What does the marking code "S5" indicate on TS4448 RGG devices?
The "S5" marking code laser-etched on the TS4448 RGG body identifies the specific die version and manufacturing lot traceability per TSC's internal coding system. It is not a functional identifier but serves quality control and counterfeit mitigation purposes - confirmed in TSC's H1612 mechanical data sheet.
TS4448 RGG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- 0603 (1608 Metric)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 125mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 100 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 nA @ 80 V
- Capacitance @ Vr, F:
- 1pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 0603
- Operating Temperature - Junction:
- -40°C ~ 125°C
TS4448 RGG FAQ
1.How can I place an order for TS4448 RGG through Aetrix?
Please submit a Request for Quotation (RFQ) for TS4448 RGG 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 TS4448 RGG reliable?
The price and inventory of TS4448 RGG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS4448 RGG is usually 5 days.
3.What payment methods are accepted for TS4448 RGG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS4448 RGG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS4448 RGG?
TS4448 RGG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS4448 RGG 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 TS4448 RGG?
For technical support, including TS4448 RGG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS4448 RGG requirements.
6.How does Aetrix verify that TS4448 RGG is sourced from the original manufacturer or authorized distributors?
All TS4448 RGG 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 TS4448 RGG meets industry standards.
7.What is the process for return or replacement of TS4448 RGG?
All TS4448 RGG units undergo pre-shipment inspection (PSI). If there is an issue with TS4448 RGG, 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 TS4448 RGG part is unused and in its original packaging.
Return procedure for TS4448 RGG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS4448 RGG Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
