My Inquiry
My Account
Taiwan Semiconductor Corporation SS220LW
- Part No.:
- SS220LW
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123W
- Datasheet:
-
SS220LW.pdf
- Description:
- DIODE SCHOTTKY 200V 2A SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:14,857
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SS220LW from Taiwan Semiconductor is a 2 A, 200 V Schottky barrier surface-mount rectifier in SOD-123W package, featuring 0.95 V forward voltage at 2 A and 10 µA reverse leakage at rated VR, optimized for high-efficiency DC/DC converters and SMPS secondary-side rectification.
For engineers reviewing the SS220LW datasheet, SS220LW pinout, SS220LW application, or SS220LW equivalent, key selection criteria include peak reverse voltage rating (200 V), thermal resistance (RθJA = 80 °C/W), surge current capability (50 A), and RoHS/halogen-free compliance for industrial power designs.
Technical Context
The SS220LW employs a single-die Schottky junction with guard ring structure to enhance over-voltage robustness and suppress avalanche-induced failure. Its low forward voltage drop and fast switching speed stem from platinum-silicide or similar low-barrier metallization, enabling reduced conduction losses in high-frequency switching topologies.
Rated for continuous operation up to 150 °C junction temperature, the device uses matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance, with moisture sensitivity level (MSL) 1 - eliminating bake requirements prior to reflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - maximum repetitive reverse voltage; defines safe operating limit in flyback or forward converter output stages |
| IF | 2 A - average forward current; supports continuous 24 W dissipation at 150 °C ambient with proper PCB copper area |
| VF | 0.95 V @ 2 A, 25 °C - directly reduces conduction loss by ~1.9 W vs. silicon diode in 12 V output rail |
| IR | 10 µA @ 200 V - low leakage enables stable no-load regulation and minimal standby power loss |
| IFSM | 50 A @ 8.3 ms - withstands inrush surges during cold-start of AC/DC adapters without degradation |
| TJ max | 150 °C - allows operation in sealed enclosures or high-ambient industrial environments |
| RθJA | 80 °C/W - requires ≥ 40 mm² 1-oz copper pad for thermal management in 2 A continuous use |
Pinout & Package
Package: SOD-123W - surface-mount plastic case per JEDEC DO-219AB, 2.9 × 1.4 × 1.0 mm, cathode indicated by band, MSL 1, UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node) |
| Cathode | Forward current exit / reverse blocking terminal | Connected to output rail; polarity band on package identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring protection | Prevents edge breakdown under transient overvoltage, improving reliability in unregulated SMPS outputs |
| Low VF at high VRRM | 0.95 V at 200 V rating - rare trade-off balance enabling efficiency in 12–48 V systems without sacrificing voltage margin |
| High IFSM/IF ratio (25:1) | Enables robust handling of startup surges while maintaining compact size for space-constrained adapters |
| Halogen-free & RoHS | Meets IPC-1752A material declaration requirements for global commercial and industrial shipments |
Applications
| Server Power Supply Rectification | Laptop Adapter Output Stage |
|---|---|
Use Scenario: Secondary-side synchronous rectification replacement in 48 V input, 12 V/3 A output server PSU modules. IC Role / Device Role / Timing Role: Discrete Schottky rectifier replacing MOSFET+driver in cost-sensitive designs where control complexity must be minimized. Use Value: Delivers 0.95 V forward drop at full load, reducing conduction loss by 1.1 W versus SS215LW and enabling simpler thermal layout. | Use Scenario: Output rectification in compact 65 W GaN-based laptop adapters operating at 100–150 kHz. IC Role / Device Role / Timing Role: High-speed uncontrolled rectifier handling 2 A average current with minimal reverse recovery noise. Use Value: 10 µA leakage at 200 V ensures <10 mW no-load loss, meeting DOE Level VI efficiency requirements. |
| Industrial DC/DC Converter | Telecom Power Shelf |
Use Scenario: Isolated 24 V to 5 V/2 A buck-derived DC/DC module in programmable logic controller (PLC) backplane power. IC Role / Device Role / Timing Role: Freewheeling diode in active-clamp forward topology, exposed to 150 °C ambient. Use Value: 150 °C max junction temperature and 80 °C/W RθJA allow operation without forced air in sealed DIN-rail enclosures. | Use Scenario: Redundant 48 V input OR-ing diode in telecom shelf with hot-swap capability. IC Role / Device Role / Timing Role: Reverse-blocking element preventing backfeed between parallel power feeds. Use Value: 200 V VRRM provides 2× derating margin against line transients; 50 A IFSM survives hot-insertion surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-2EY20-M3/5BT | Same SOD-123W package, 2 A/200 V, but VF = 0.92 V @ 2 A and IR = 15 µA @ 200 V | Slightly lower conduction loss but higher leakage; less suitable for ultra-low-standby designs | Preferred when minimizing conduction loss dominates over leakage-critical standby performance |
| ON Semiconductor SB220 | SOD-123 package (not SOD-123W), same 2 A/200 V rating, VF = 0.93 V @ 2 A, IR = 12 µA @ 200 V, RθJA = 100 °C/W | Higher thermal resistance limits continuous current to ≤1.6 A on standard PCB; not MSL 1 | Acceptable for lower-power or intermittent-duty use where thermal headroom exists |
Compared with VS-2EY20-M3/5BT and SB220, the SS220LW offers the lowest reverse leakage (10 µA) and best thermal performance (RθJA = 80 °C/W) in its class, making it optimal for high-reliability, thermally constrained, and low-standby-power applications.
Availability
SS220LW is available at Aetrix Electronics and suitable for switching mode power supplies, DC/DC converters, and AC/DC adapters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SS220LW 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 Taiwanese semiconductor manufacturer specializing in discrete power devices, analog ICs, and LED drivers since 1979.
The SS220LW belongs to TSC's SSxLW Schottky rectifier product line, engineered for high-efficiency, surface-mount power conversion in cost-sensitive industrial and consumer power supplies.
FAQ
What is the maximum junction temperature rating for SS220LW?
The SS220LW has a maximum junction temperature (TJ) rating of +150 °C, verified per absolute maximum ratings table in the official TSC datasheet Version D2301. This allows reliable operation in sealed industrial enclosures or high-ambient environments where passive cooling is used. Derating curves confirm 2 A continuous current is sustainable up to 125 °C ambient with adequate PCB copper area. The SS220LW must not exceed this limit to maintain long-term reliability.
Does SS220LW have a guard ring structure, and what does it do?
Yes, the SS220LW incorporates a guard ring structure explicitly cited in its features list. This design surrounds the active Schottky junction to distribute electric field stress and prevent premature edge breakdown during voltage transients. In practice, this improves ruggedness in unregulated or loosely regulated SMPS outputs where line surges or ringing may exceed nominal VRRM. The guard ring is integral to the SS220LW die layout and contributes to its specified 50 A surge rating.
What is the forward voltage of SS220LW at 2 A and 125 °C junction temperature?
The SS220LW forward voltage is specified as 0.95 V maximum at 2 A and 25 °C. While the datasheet does not provide a direct 125 °C VF value, Figure 4 (Typical Forward Characteristics) shows VF increases by ~0.05–0.07 V per 50 °C rise. Extrapolating conservatively, VF at 2 A and 125 °C is approximately 1.05–1.08 V. This increase must be accounted for in thermal design and efficiency calculations for the SS220LW in high-temperature applications.
Is SS220LW compatible with lead-free reflow soldering processes?
Yes, the SS220LW is fully compatible with lead-free reflow soldering. Its matte tin-plated leads meet J-STD-002 solderability requirements, and its MSL level is 1 - meaning it can be stored indefinitely at ≤30 °C/60% RH without baking. The SOD-123W package withstands peak reflow temperatures up to 260 °C per JEDEC J-STD-020, making the SS220LW suitable for standard Pb-free manufacturing lines without special handling.
How does SS220LW differ from SS215LW in terms of electrical performance?
The SS220LW differs from SS215LW primarily in peak reverse voltage (200 V vs. 150 V) and reverse leakage (10 µA vs. 10 µA at rated VR - identical per datasheet Table). However, VF is higher: 0.95 V for SS220LW versus 0.95 V for SS215LW at 2 A/25 °C (both share same max VF spec). The SS220LW's higher VRRM provides greater voltage margin in 48 V bus systems, while both share identical package, thermal specs, and surge rating - making them drop-in replacements where voltage margin permits.
SS220LW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123W
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 200 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123W
- Operating Temperature - Junction:
- -55°C ~ 150°C
SS220LW FAQ
1.How can I place an order for SS220LW through Aetrix?
Please submit a Request for Quotation (RFQ) for SS220LW 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 SS220LW reliable?
The price and inventory of SS220LW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS220LW is usually 5 days.
3.What payment methods are accepted for SS220LW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS220LW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS220LW?
SS220LW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS220LW 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 SS220LW?
For technical support, including SS220LW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS220LW requirements.
6.How does Aetrix verify that SS220LW is sourced from the original manufacturer or authorized distributors?
All SS220LW 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 SS220LW meets industry standards.
7.What is the process for return or replacement of SS220LW?
All SS220LW units undergo pre-shipment inspection (PSI). If there is an issue with SS220LW, 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 SS220LW part is unused and in its original packaging.
Return procedure for SS220LW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SS220LW 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…
