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Taiwan Semiconductor Corporation SS115LS
- Part No.:
- SS115LS
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123H
- Datasheet:
-
SS115LS.pdf
- Description:
- 1A, 150V, SCHOTTKY RECTIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:19,650
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Product details
Overview
SS115LS from Taiwan Semiconductor is a 150 V, 1 A surface-mount Schottky barrier rectifier in SOD-123HE package, featuring 0.90 V forward voltage at 1.0 A and 22 pF junction capacitance at 1 MHz/4 V - optimized for high-frequency switching power supplies requiring low conduction loss and fast recovery.
For engineers reviewing the SS115LS datasheet, SS115LS pinout, SS115LS application, or SS115LS equivalent, key selection criteria include its 150 V repetitive peak reverse voltage, 30 A non-repetitive surge rating, -55°C to +150°C junction temperature range, RoHS/halogen-free compliance, and SOD-123HE mechanical footprint with cathode band polarity marking.
Technical Context
The SS115LS operates as a single-die, unidirectional Schottky rectifier with metal–semiconductor junction enabling near-zero reverse recovery time and minimal switching loss. Its thermal resistance (RθJA = 70°C/W) supports operation up to 150°C junction temperature under defined PCB layout conditions.
Designed for DC–DC converters and AC–DC adapters, the device delivers 0.75 V typical forward voltage at 0.5 A and 50 µA maximum reverse leakage at rated 150 V and 25°C - performance validated across the full SS1xLS family with voltage-scaled parameter consistency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 150 V - maximum repetitive reverse blocking voltage; defines safe operating limit in high-voltage output stages of SMPS |
| IF | 1 A continuous forward current - rated for steady-state conduction in compact adapter and converter designs |
| IFSM | 30 A - peak surge capability for 8.3 ms half-sine wave; handles inrush and transient overloads without failure |
| VF @ 1.0 A | 0.90 V max - low conduction loss reduces heat generation and improves system efficiency at full load |
| CJ | 22 pF @ 1 MHz, 4 V - low junction capacitance minimizes switching noise and enables stable high-frequency operation |
| TJ max | +150°C - extended junction temperature rating allows use in thermally constrained industrial and automotive-adjacent environments |
| RθJA | 70°C/W - thermal resistance from junction to ambient; requires minimum copper area per SOD-123HE pad layout for safe derating |
Pinout & Package
SOD-123HE surface-mount package: 2-terminal, single-anode/single-cathode configuration; molded plastic body with matte tin-plated leads, cathode polarity indicated by band; dimensions: 3.50 × 1.90 × 0.85 mm (L × W × H); weight ≈ 0.021 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., ground or return path) in rectifier configuration; must be routed with adequate current-carrying trace width |
| Cathode | Forward current exit point / polarity indicator | Marked by visible band; connects to higher-potential node (e.g., output rail); determines direction of DC current flow |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SOD-123HE package | Height < 0.85 mm - enables ultra-thin power adapter and portable electronics designs with strict Z-axis constraints |
| High surge current capability | 30 A IFSM - withstands repeated cold-start surges and line transients without degradation in DC–DC front-end applications |
| Moisture sensitivity level 1 | No bake required before reflow - simplifies manufacturing and eliminates pre-conditioning steps for automated SMT assembly |
| RoHS and halogen-free compliance | Meets IEC 61249-2-21 - satisfies environmental requirements for consumer, industrial, and export-bound end equipment |
| Optimized thermal performance | RθJC = 25°C/W - enables efficient heat transfer to PCB copper when mounted per recommended pad layout |
Applications
| AC–DC Adapters | DC–DC Converters |
|---|---|
Use Scenario: Secondary-side rectification in 5–24 V wall adapters for consumer electronics. IC Role / Device Role / Timing Role: Schottky rectifier replacing conventional PN diodes to reduce conduction loss and improve light-load efficiency. Use Value: 0.90 V VF at 1 A lowers power dissipation by ~35% vs. comparable 1 A silicon diodes, reducing heatsink need and improving thermal margin. |
Use Scenario: Output rectification in isolated flyback or forward converters for industrial sensors and IoT gateways. IC Role / Device Role / Timing Role: High-speed unidirectional current path with negligible reverse recovery, minimizing switching node ringing. Use Value: 22 pF CJ and zero Qrr suppress EMI generation during turn-off, easing EMC filter design and reducing conducted emissions. |
| USB Power Delivery | LED Driver Circuits |
Use Scenario: Input rectification in USB PD 3.0 compliant 20 V/3 A auxiliary power rails. IC Role / Device Role / Timing Role: 150 V VRRM provides 50% safety margin above 20 V nominal input, accommodating line transients and overshoot. Use Value: 150 V rating ensures reliable operation during 100 Vpk surge events per IEC 61000-4-5, eliminating premature breakdown risk. |
Use Scenario: Freewheeling path in constant-current LED buck drivers for architectural lighting. IC Role / Device Role / Timing Role: Low-loss freewheeling diode conducting during MOSFET off-time in inductive switching cycles. Use Value: 1 A IF and 0.75 V typical VF at 0.5 A minimize voltage drop across freewheel path, preserving regulation accuracy and dimming linearity. |
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-1N5819-M3/54 | 40 V VRRM, 1 A IF, 0.475 V VF @ 1 A, DO-214AC package (larger, taller) | Limited to ≤40 V circuits; unsuitable for 100+ V outputs where SS115LS is specified | Select only for low-voltage, cost-sensitive designs where 150 V margin is unnecessary |
| ON Semiconductor SB1150-TB | 150 V VRRM, 1 A IF, 0.89 V VF @ 1 A, SOD-123 package (no HE variant; RθJA = 100°C/W) | Higher thermal resistance limits power handling on minimal copper; same voltage/current but inferior thermal performance | Prefer SS115LS where board space and thermal management are critical; SB1150-TB acceptable for lower ambient or intermittent duty |
Compared with VS-1N5819-M3/54 and SB1150-TB, the SS115LS uniquely combines 150 V rating, SOD-123HE's 0.85 mm profile, and 70°C/W RθJA - making it the only option among the three suitable for space-constrained, high-input-voltage, thermally demanding adapter and converter designs.
Availability
SS115LS is available at Aetrix Electronics and suitable for switching mode power supplies, AC–DC adapters, and DC–DC converters requiring stable component supply, consistent parametric performance, and long-term manufacturability assurance.
Supply support for SS115LS 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, including Schottky rectifiers, TVS diodes, and MOSFETs for industrial and consumer applications.
The SS115LS belongs to TSC's SS1xLS Schottky rectifier family, engineered specifically for high-efficiency, surface-mount secondary-side rectification in compact, high-frequency power conversion systems.
FAQ
What is the maximum junction temperature rating for the SS115LS?
The SS115LS has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table in the official Taiwan Semiconductor datasheet. This allows sustained operation in thermally aggressive environments such as enclosed power adapters or industrial DC–DC modules. Derating curves confirm usable current capacity down to 0.5 A at 125°C ambient with standard PCB copper. The SS115LS must not exceed this limit to maintain reliability and parametric stability.
Does the SS115LS have a documented moisture sensitivity level (MSL)?
Yes, the SS115LS is rated MSL Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/85% RH and requires no baking prior to reflow soldering. This is confirmed in the "Features" section of the Taiwan Semiconductor SS1xLS datasheet (Version D2212). The MSL Level 1 classification simplifies SMT line integration and eliminates preconditioning delays - a key advantage over higher-MSL alternatives like many SOIC-packaged diodes. The SS115LS remains fully compliant after exposure to standard factory humidity conditions.
What is the forward voltage specification of the SS115LS at 1.0 A and 25°C?
The SS115LS has a maximum forward voltage (VF) of 0.90 V at IF = 1.0 A and TJ = 25°C, as specified in the Electrical Specifications table of the Taiwan Semiconductor datasheet. Typical VF is 0.75 V under the same conditions. This value is measured using a pulse test (PW = 0.3 ms) to avoid self-heating effects. The SS115LS maintains this low VF across its full operating temperature range, contributing directly to reduced conduction losses in high-efficiency power designs.
Is the SS115LS RoHS and halogen-free compliant?
Yes, the SS115LS is both RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the "Features" section of the official Taiwan Semiconductor SS1xLS datasheet. Lead finish is matte tin, and all molding compounds meet UL 94V-0 flammability standards. These compliance attributes are certified for the full SS1xLS family, including the SS115LS, and are supported by TSC's material declarations. No exemptions or exceptions apply to the SS115LS part number.
What is the junction-to-ambient thermal resistance (RθJA) of the SS115LS?
The SS115LS has a typical junction-to-ambient thermal resistance (RθJA) of 70°C/W, measured under standard JEDEC test conditions (single-layer 1 in² copper pad). This value is published in the Thermal Performance section of the Taiwan Semiconductor SS1xLS datasheet (Version D2212). Actual RθJA will vary with PCB copper area and layer count; the SS115LS achieves optimal thermal performance when mounted per the recommended SOD-123HE pad layout in the package drawing.
SS115LS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123H
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 150 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 50 µA @ 150 V
- Capacitance @ Vr, F:
- 80pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123HE
- Operating Temperature - Junction:
- -55°C ~ 150°C
SS115LS FAQ
1.How can I place an order for SS115LS through Aetrix?
Please submit a Request for Quotation (RFQ) for SS115LS 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 SS115LS reliable?
The price and inventory of SS115LS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS115LS is usually 5 days.
3.What payment methods are accepted for SS115LS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS115LS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS115LS?
SS115LS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS115LS 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 SS115LS?
For technical support, including SS115LS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS115LS requirements.
6.How does Aetrix verify that SS115LS is sourced from the original manufacturer or authorized distributors?
All SS115LS 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 SS115LS meets industry standards.
7.What is the process for return or replacement of SS115LS?
All SS115LS units undergo pre-shipment inspection (PSI). If there is an issue with SS115LS, 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 SS115LS part is unused and in its original packaging.
Return procedure for SS115LS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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