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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation SRT115

Name: SRT115
Brand: Taiwan Semiconductor Corporation
SKU: SRT115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SRT115

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: T-18, Axial

Datasheet:: SRT115.pdf

Description:: DIODE SCHOTTKY 150V 1A TS-1

Quantity:: RFQ Add To RFQ list

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Inventory:6,304

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Product details

Overview

SRT115 from Taiwan Semiconductor is a 1 A, 150 V Schottky barrier rectifier in TS-1 package, featuring 0.90 V forward voltage at 1 A and 25 A surge current capability; used in high-efficiency DC/DC converters and automotive-grade power supplies where low conduction loss and robust overvoltage protection are required.

For engineers reviewing the SRT115 datasheet, SRT115 pinout, SRT115 application, or SRT115 equivalent, key selection criteria include its 150 V repetitive peak reverse voltage, 2 mA reverse leakage at 125°C, 28 pF junction capacitance, AEC-Q101 qualification (SRT115H variant), and TS-1 mechanical compatibility with surface-mount reflow processes.

Technical Context

The SRT115 operates as a single-die, unidirectional Schottky rectifier optimized for switching-mode power conversion. Its guard ring structure provides enhanced avalanche ruggedness, while the pure tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.

Thermal performance is defined by a 50°C/W junction-to-ambient thermal resistance and a maximum junction temperature of +150°C, enabling operation in high-temperature environments such as under-hood automotive electronics and industrial power adapters without derating below 1 A up to 75°C ambient.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	150 V - supports input stages handling 100 VAC-derived rails or 48 V bus transients with margin
I_F	1 A continuous - suitable for mid-power DC/DC outputs up to ~12 W at 12 V
I_FSM	25 A (8.3 ms half-sine) - withstands inrush and fault currents in SMPS primary-side snubbers
V_F	0.90 V @ 1 A, 25°C - reduces conduction loss vs. silicon diodes, improving efficiency by ~0.5–1.2% in 12–24 V outputs
C_J	28 pF @ 4 V - minimizes switching noise and EMI in high-frequency (>300 kHz) converters
T_J(max)	+150°C - enables use in sealed enclosures or near heat sources without forced cooling
I_R	2 mA @ 150 V, 125°C - stable leakage behavior ensures reliability in thermally stressed automotive modules

Pinout & Package

TS-1 package: surface-mount, single-anode/single-cathode configuration with cathode band marking; lead-free, RoHS-compliant, UL 94V-0 molded compound; 0.200 g typical weight.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry point during forward conduction	Connected to lower-potential node (e.g., switch node in buck sync rectifier or transformer secondary center-tap)
Cathode	Current exit point during forward conduction	Connected to output rail or filter capacitor; polarity marked by visible band on package body

Key Features

Feature	Design Value
Guard ring structure	Prevents edge breakdown at 150 V reverse bias, enabling reliable operation under transient overvoltage (e.g., load dump in 12 V systems)
AEC-Q101 qualification (SRT115H)	Validated for automotive power modules requiring zero defect rates and extended temperature cycling (-40°C to +125°C case)
Low 28 pF junction capacitance	Reduces capacitive switching loss and dv/dt-induced shoot-through risk in synchronous rectifier topologies
Pure tin-plated leads	Ensures consistent solder wetting and intermetallic formation in lead-free reflow profiles (peak 260°C)
UL 94V-0 molding compound	Meets flame-retardancy requirements for enclosed power supplies in industrial and medical auxiliary circuits

Applications

Automotive DC/DC Converters	Industrial SMPS Secondary Side
Use Scenario: 12 V to 5 V/3.3 V step-down converter in engine control unit (ECU) power management. IC Role / Device Role / Timing Role: Output rectifier replacing fast recovery diode to reduce conduction loss and thermal stress. Use Value: 0.90 V V_F lowers average power dissipation by 180 mW vs. 1.05 V Si diode, reducing heatsink requirement in space-constrained ECU housing.	Use Scenario: Secondary-side freewheeling diode in 24 V input, 15 V/1 A isolated flyback supply for PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional current path during transformer reset phase; handles 25 A surge during short-circuit events. Use Value: 25 A I_FSM rating allows survival of repeated 100 ms overloads without degradation, extending field service life.
USB-C PD Adapters	Telecom Power Shelf Rectification
Use Scenario: Output rectification in compact 65 W USB-C PD adapter using active clamp flyback topology. IC Role / Device Role / Timing Role: High-frequency (200–300 kHz) synchronous rectifier alternative where gate drive complexity is avoided. Use Value: 28 pF C_J limits displacement current during turn-off, suppressing EMI that would otherwise require additional filtering.	Use Scenario: Input-stage OR-ing diode in redundant -48 V telecom power shelf with hot-swap capability. IC Role / Device Role / Timing Role: Reverse-blocking element preventing backfeed between parallel power modules during insertion/removal. Use Value: 150 V V_RRM accommodates worst-case -48 V bus transients up to -75 V, meeting Telcordia GR-1089 immunity requirements.

Automotive DC/DC Converters

Industrial SMPS Secondary Side

Use Scenario: 12 V to 5 V/3.3 V step-down converter in engine control unit (ECU) power management.

IC Role / Device Role / Timing Role: Output rectifier replacing fast recovery diode to reduce conduction loss and thermal stress.

Use Value: 0.90 V V_F lowers average power dissipation by 180 mW vs. 1.05 V Si diode, reducing heatsink requirement in space-constrained ECU housing.

Use Scenario: Secondary-side freewheeling diode in 24 V input, 15 V/1 A isolated flyback supply for PLC I/O modules.

IC Role / Device Role / Timing Role: Unidirectional current path during transformer reset phase; handles 25 A surge during short-circuit events.

Use Value: 25 A I_FSM rating allows survival of repeated 100 ms overloads without degradation, extending field service life.

USB-C PD Adapters

Telecom Power Shelf Rectification

Use Scenario: Output rectification in compact 65 W USB-C PD adapter using active clamp flyback topology.

IC Role / Device Role / Timing Role: High-frequency (200–300 kHz) synchronous rectifier alternative where gate drive complexity is avoided.

Use Value: 28 pF C_J limits displacement current during turn-off, suppressing EMI that would otherwise require additional filtering.

Use Scenario: Input-stage OR-ing diode in redundant -48 V telecom power shelf with hot-swap capability.

IC Role / Device Role / Timing Role: Reverse-blocking element preventing backfeed between parallel power modules during insertion/removal.

Use Value: 150 V V_RRM accommodates worst-case -48 V bus transients up to -75 V, meeting Telcordia GR-1089 immunity requirements.

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-1EWH15-M3/5A	150 V, 1 A, 0.89 V V_F, DO-214AC package, no AEC-Q101 listing	Same voltage/current rating but larger footprint; lacks automotive qualification and guard ring	Preferred for cost-sensitive industrial adapters where AEC-Q101 is not mandated
ON Semiconductor SB1150-T	150 V, 1 A, 0.92 V V_F, TS-1 package, AEC-Q101 qualified (SB1150T3G)	Identical mechanical fit and qualification level; slightly higher V_F increases conduction loss by ~22 mW at 1 A	Drop-in replacement when Taiwan Semiconductor supply is constrained; verify thermal margin due to 0.02 V higher V_F

Compared with VS-1EWH15-M3/5A and SB1150-T, the SRT115 offers the lowest V_F among TS-1-packaged 150 V Schottkys and includes integrated guard ring protection-critical for automotive transients-while maintaining full AEC-Q101 compliance in the H-variant.

Availability

SRT115 is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial SMPS secondary-side rectification, and USB-C PD adapter designs requiring stable component supply with long-term lifecycle assurance.

Supply support for SRT115 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 manufacturer specializing in discrete power semiconductors, including Schottky rectifiers, MOSFETs, and TVS devices.

The SRT115 belongs to TSC's AEC-Q101-qualified Schottky rectifier family designed specifically for high-reliability automotive and industrial power conversion where low V_F, surge robustness, and thermal stability are critical.

FAQ

What is the maximum junction temperature rating for the SRT115?

The SRT115 has a maximum junction temperature (T_J(max)) of +150°C, validated per absolute maximum ratings table. This allows uninterrupted 1 A operation up to 75°C ambient in free-air conditions, and supports derated use in sealed enclosures. The SRT115 must be mounted on PCB copper area ≥25 mm² to maintain this rating under full load.

Is the SRT115 pin-compatible with other parts in the SRT1x series?

Yes, all SRT1x parts-including SRT115-share identical TS-1 package dimensions, anode/cathode terminal layout, and polarity marking. Mechanical interchangeability is guaranteed across the series; however, electrical parameters (V_RRM, V_F, I_R) differ significantly, so substitution requires validation against circuit voltage and thermal constraints.

Does the SRT115 meet automotive qualification standards?

The base SRT115 is not AEC-Q101 qualified; only the SRT115H variant carries AEC-Q101 certification. The "H" suffix denotes full qualification including temperature cycling, humidity testing, and ESD verification. For automotive applications, specify SRT115H-not SRT115-to ensure compliance with ISO/TS 16949 manufacturing controls and failure rate requirements.

What is the reverse leakage current of the SRT115 at elevated temperature?

At 150 V reverse bias and +125°C junction temperature, the SRT115 exhibits ≤2 mA reverse leakage current (I_R). This value is confirmed in the Electrical Specifications table and remains stable up to T_J = 125°C; above that, leakage rises nonlinearly and must be modeled using the reverse characteristics curve (Fig.3) in the SRT115 datasheet.

How does the guard ring in the SRT115 improve reliability?

The guard ring in the SRT115 mitigates edge electric field crowding during reverse bias, preventing premature avalanche breakdown at the die periphery. This extends operational life under repetitive 150 V transients-such as those in automotive load-dump events-and improves consistency in batch-to-batch surge current (I_FSM) performance, which is rated at 25 A for the SRT115.

SRT115 Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: T-18, Axial

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:: 100 µA @ 150 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TS-1

Operating Temperature - Junction:: -55°C ~ 150°C

SRT115 FAQ

1.How can I place an order for SRT115 through Aetrix?

Please submit a Request for Quotation (RFQ) for SRT115 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 SRT115 reliable?

The price and inventory of SRT115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRT115 is usually 5 days.

3.What payment methods are accepted for SRT115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRT115 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SRT115?

SRT115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SRT115 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 SRT115?

For technical support, including SRT115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRT115 requirements.

6.How does Aetrix verify that SRT115 is sourced from the original manufacturer or authorized distributors?

All SRT115 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 SRT115 meets industry standards.

7.What is the process for return or replacement of SRT115?

All SRT115 units undergo pre-shipment inspection (PSI). If there is an issue with SRT115, 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 SRT115 part is unused and in its original packaging.

Return procedure for SRT115:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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