My Inquiry
My Account
Taiwan Semiconductor Corporation S1GLW
- Part No.:
- S1GLW
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123W
- Datasheet:
-
S1GLW.pdf
- Description:
- DIODE GEN PURP 400V 1A SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:684
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
S1GLW from Taiwan Semiconductor is a 1A, 400V repetitive peak reverse voltage standard surface-mount silicon rectifier diode in SOD-123W package, featuring 30A non-repetitive surge current capability, 1.1V max forward voltage at 1A, and 1µA max reverse leakage at 25°C - used in DC-DC converter output stages for efficient unidirectional power conversion.
For engineers reviewing the S1GLW datasheet, S1GLW pinout, S1GLW application, or S1GLW equivalent, key selection criteria include VRRM = 400V, IFSM = 30A, VF ≤ 1.1V @ 1A, TJ max = 175°C, and SOD-123W thermal resistance RθJA = 80°C/W under standard PCB mounting conditions.
Technical Context
The S1GLW operates as a single-die, planar-passivated silicon PN junction rectifier optimized for high-efficiency switching-mode power supplies. Its 400V VRRM rating supports 280V RMS input handling, while low 1.1V VF minimizes conduction loss at 1A continuous forward current.
Thermally, it delivers RθJL = 25°C/W to lead and RθJA = 80°C/W to ambient on standard FR-4 with 25mm² copper pad, enabling reliable operation up to 175°C junction temperature with proper board layout and airflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - maximum repetitive reverse voltage the device blocks without breakdown |
| IF | 1 A - continuous average forward current rating at TA = 75°C on standard PCB |
| IFSM | 30 A - peak non-repetitive surge current (8.3ms half-sine) survivable without damage |
| VF | ≤1.1 V @ IF = 1A, TJ = 25°C - forward voltage drop determining conduction loss in power path |
| IR | ≤1 µA @ VR = 400V, TJ = 25°C - reverse leakage current affecting standby power and isolation integrity |
| TJ max | +175 °C - maximum allowable junction temperature for long-term reliability |
| CJ | 8 pF @ 1MHz, VR = 4.0V - junction capacitance influencing high-frequency switching noise and EMI |
Pinout & Package
Package: SOD-123W - surface-mount plastic case with matte tin-plated leads, UL 94V-0 molding compound, polarity indicated by cathode band, weight ≈0.019g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of load; must withstand surge current and thermal stress during conduction |
| Cathode | Forward current exit / reverse voltage blocking terminal | Marked by band; connected to higher-potential rail; sustains full VRRM during off-state with minimal leakage |
Key Features
| Feature | Design Value |
|---|---|
| High surge current capability | 30A IFSM enables robustness against inrush and transient overloads in SMPS output rectification |
| Low forward voltage | VF ≤ 1.1V at 1A reduces power dissipation and improves system efficiency in 12–48V DC-DC outputs |
| Moisture sensitivity level 1 | No floor life limitation or bake requirement before reflow - simplifies SMT line handling and inventory management |
| Junction temperature rating | 175°C TJ max allows operation in high-ambient industrial environments without derating below 1A |
| Halogen-free construction | Complies with IEC 61249-2-21 - meets environmental compliance requirements for RoHS-compliant end equipment |
Applications
| DC-DC Converter Output Rectification | Switching Inverter Freewheeling Diode |
|---|---|
Use Scenario: Used in secondary-side synchronous or non-synchronous rectification of isolated flyback or forward converters delivering 5–24V at ≤1A. IC Role / Device Role / Timing Role: Unidirectional current steering device converting transformer AC output to regulated DC output. Use Value: 1.1V VF limits conduction loss to ≤1.1W at full load; 400V VRRM safely handles reflected voltage spikes up to 350V. | Use Scenario: Placed across inductive loads (e.g., motor windings or relay coils) in 24–48V inverters to clamp inductive kickback. IC Role / Device Role / Timing Role: Passive freewheeling path preventing voltage overshoot during switch-off transitions. Use Value: 30A IFSM absorbs energy from typical 10–20mJ inductive transients; 175°C TJ rating ensures stability during repeated switching cycles. |
| AC-DC Adapter Secondary Rectifier | Industrial Sensor Power Supply Clamp |
Use Scenario: Rectifying 12–24V AC from small toroidal transformers in wall adapters powering IoT gateways or PLC I/O modules. IC Role / Device Role / Timing Role: Standard bridge or single-diode rectifier in low-power linear or quasi-resonant AC-DC stages. Use Value: SOD-123W footprint fits compact adapter PCBs; 1µA IR at 25°C minimizes no-load power draw in always-on applications. | Use Scenario: Protecting 3.3V/5V sensor supply rails from reverse polarity or ESD-induced transients in factory automation nodes. IC Role / Device Role / Timing Role: Reverse-polarity protection and transient clamping element placed upstream of LDO regulators. Use Value: 400V VRRM provides margin against 200V+ fast transients; 8pF CJ avoids signal distortion in <10MHz analog sensor paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standard rectifier diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MUR140 | VRRM = 400V, IF = 1A, VF = 1.25V max @ 1A, SOD-123 package (not SOD-123W), RθJA = 100°C/W | Higher VF increases conduction loss; lower thermal performance requires larger copper area for same current | Select when legacy SOD-123 footprint compatibility is required and 0.15V higher VF is acceptable |
| Vishay VS-1EWH04-M3 | VRRM = 400V, IF = 1A, VF = 1.05V typ @ 1A, SOD-123W, RθJA = 75°C/W, AEC-Q101 qualified | Lower VF and better thermal resistance; automotive qualification adds cost and test overhead | Select for automotive-grade designs where 1.05V typ VF and AEC-Q101 compliance justify premium pricing |
Compared with MUR140 and VS-1EWH04-M3, the S1GLW offers balanced performance: identical VRRM and IF ratings, VF ≤ 1.1V within specification limit, SOD-123W package matching VS-1EWH04-M3's thermal advantage over MUR140, and industrial-grade qualification at lower cost than automotive variants.
Availability
S1GLW is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and industrial sensor power supplies requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.
Supply support for S1GLW 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, including rectifiers, TVS diodes, MOSFETs, and IGBTs for industrial and consumer markets.
The S1GLW belongs to TSC's S1xLW standard rectifier family, designed specifically for cost-sensitive, high-volume surface-mount power conversion applications where reliability, thermal performance, and JEDEC-compliant packaging are essential.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) rating for the S1GLW?
The S1GLW has a VRRM rating of 400 V, meaning it can reliably block up to 400 volts of reverse voltage in repetitive operation without breakdown. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet Version D2109 and applies specifically to the S1GLW variant - not the entire S1xLW series. The S1GLW must not be operated beyond this voltage in continuous or cyclic reverse-bias conditions.
What is the forward voltage (VF) specification for the S1GLW at rated current?
The S1GLW has a maximum forward voltage of 1.1 V at IF = 1 A and TJ = 25°C, per the Electrical Specifications table. This is a guaranteed upper limit under pulsed test conditions (PW = 0.3 ms). At elevated temperatures or higher currents, VF may increase slightly but remains within design margins for typical 1A DC-DC output rectification. The S1GLW's VF directly impacts conduction loss and thermal rise in the final application.
Does the S1GLW have moisture sensitivity level (MSL) restrictions for PCB assembly?
No - the S1GLW is rated MSL Level 1 per J-STD-020, meaning it has no floor life limitation and does not require dry pack or baking prior to reflow soldering. This simplifies manufacturing logistics and eliminates moisture-related popcorning risk during standard lead-free reflow profiles. The S1GLW's SOD-123W package construction and passivation ensure robustness under typical SMT handling conditions.
What is the peak forward surge current (IFSM) rating for the S1GLW, and how is it defined?
The S1GLW is rated for 30 A peak forward surge current (IFSM) under an 8.3 ms single half-sine-wave pulse superimposed on rated load, as specified in the Absolute Maximum Ratings table. This rating reflects short-duration overload capability - such as inrush into capacitive inputs or inductive kickback absorption - and is not intended for repetitive use. The S1GLW maintains structural integrity and electrical function after exposure to this surge, provided junction temperature remains within limits.
Is the S1GLW halogen-free and RoHS compliant?
Yes - the S1GLW is both RoHS compliant and halogen-free in accordance with IEC 61249-2-21. Taiwan Semiconductor confirms this in the FEATURES section of the S1DLW–S1MLW datasheet (Version D2109). These compliance attributes are built into the molding compound and plating materials, making the S1GLW suitable for environmentally regulated end equipment including industrial controllers, medical peripherals, and consumer electronics sold in EU and other restricted markets.
S1GLW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123W
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 1 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 400 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123W
- Operating Temperature - Junction:
- -55°C ~ 175°C
S1GLW FAQ
1.How can I place an order for S1GLW through Aetrix?
Please submit a Request for Quotation (RFQ) for S1GLW 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 S1GLW reliable?
The price and inventory of S1GLW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1GLW is usually 5 days.
3.What payment methods are accepted for S1GLW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1GLW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S1GLW?
S1GLW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S1GLW 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 S1GLW?
For technical support, including S1GLW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1GLW requirements.
6.How does Aetrix verify that S1GLW is sourced from the original manufacturer or authorized distributors?
All S1GLW 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 S1GLW meets industry standards.
7.What is the process for return or replacement of S1GLW?
All S1GLW units undergo pre-shipment inspection (PSI). If there is an issue with S1GLW, 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 S1GLW part is unused and in its original packaging.
Return procedure for S1GLW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
S1GLW 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…
