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NXP Semiconductors 1PS59SB20,115
- Part No.:
- 1PS59SB20,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
1PS59SB20,115.pdf
- Description:
- DIODE SCHOT 40V 500MA SMT3 MPAK
- Quantity:
- Payment:
- Shipping:
Inventory:2,883
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Product details
Overview
1PS59SB20,115 from NXP Semiconductors is a planar Schottky barrier diode with integrated guard ring protection in SC-59 (SOT346) package, rated for 40 V reverse voltage, 500 mA continuous forward current, and 550 mV forward voltage at 500 mA - used in high-speed switching and voltage clamping circuits for DC-DC converters and I/O protection.
For engineers reviewing the 1PS59SB20,115 datasheet, 1PS59SB20,115 pinout, 1PS59SB20,115 application, or 1PS59SB20,115 equivalent, key selection criteria include its ultra-fast switching speed, low VF, guard ring stress protection, 100 µA max reverse leakage at 35 V/25 °C, and SC-59 thermal resistance of 500 K/W under standard mounting.
Technical Context
This discrete Schottky diode uses a planar junction structure with an integrated guard ring to suppress edge breakdown and improve ruggedness under transient stress. Its low forward voltage and fast recovery enable efficient high-frequency rectification and clamping without minority-carrier storage delay.
Designed for surface-mount operation in space-constrained applications, it delivers 60–90 pF capacitance at 0 V reverse bias and maintains stable reverse leakage up to 10 mA at 35 V and 100 °C junction temperature - critical for thermal-aware protection designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR (max) | 40 V - sets maximum allowable reverse bias before breakdown in clamping or flyback circuits |
| IF (cont) | 500 mA - defines steady-state current handling in power rail protection paths |
| VF @ 500 mA | 550 mV - enables low-loss voltage clamping and minimizes conduction loss in DC-DC sync rectifiers |
| IR @ 35 V / 25 °C | 100 µA - ensures minimal leakage-induced offset in precision signal path protection |
| Cd @ 0 V / 1 MHz | 60–90 pF - determines high-frequency impedance and affects RF filtering or ESD response time |
| Rth j-a | 500 K/W - requires careful PCB copper area design to maintain Tj ≤ 125 °C at full load |
Pinout & Package
Package: SC-59 (SOT346), plastic surface-mounted, 3-lead package with 1.3 mm × 2.7 mm footprint and 1.0 mm height. Standard mounting per note 1 in datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Forward current entry point; connects to positive side of source or switch node |
| 2 | Not connected | Internally isolated; must remain unconnected on PCB to avoid parasitic coupling |
| 3 | Cathode | Forward current exit and reverse voltage reference; ties to ground or return path |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast switching | No minority-carrier storage; enables operation >10 MHz in snubber and clamp circuits |
| Low forward voltage | 550 mV at rated 500 mA - reduces power loss by ~40% vs. standard silicon diodes |
| Guard ring protection | Integrated junction termination structure prevents premature edge breakdown under voltage transients |
| Small SMD package | SC-59 (SOT346) footprint allows placement in dense DC-DC converter layouts with <2.5 mm² board area |
Applications
| DC-DC Converter Output Clamp | I/O Line Protection |
|---|---|
Use Scenario: Clamping output voltage spikes during MOSFET turn-off in buck converter synchronous rectification stages. IC Role / Device Role / Timing Role: Fast-recovery Schottky clamp diode placed between output rail and ground to absorb inductive kickback energy. Use Value: 550 mV VF minimizes conduction loss during clamping; 500 mA rating supports typical sub-1 A point-of-load designs. | Use Scenario: Protecting microcontroller GPIO pins from ESD and overvoltage events on industrial sensor interfaces. IC Role / Device Role / Timing Role: Low-capacitance (60–90 pF) bidirectional clamp between I/O line and VCC/GND rails. Use Value: Guard ring ensures robustness against repeated 2 kV HBM transients without parameter shift or failure. |
| Automotive Body Control Module | USB Port Overvoltage Clamp |
Use Scenario: Suppressing relay coil back-EMF in 12 V automotive body control modules with PWM-driven solenoids. IC Role / Device Role / Timing Role: Reverse-biased Schottky across inductive load to provide fast, low-loss energy recirculation path. Use Value: 40 V VR rating accommodates 12 V system transients up to ISO 7637-2 Pulse 1/2a; 2 A IFSM handles surge currents. | Use Scenario: Preventing damage to USB 2.0 data lines from accidental 5 V misconnection or hot-plug surges. IC Role / Device Role / Timing Role: Low-leakage (100 µA max) clamp diode between D+ and D− lines and VBUS/GND. Use Value: 100 µA IR at 25 °C avoids signal integrity degradation; SC-59 size fits tight USB connector routing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSSR0530MX | 30 V VR, 500 mA IF, VF = 450 mV @ 500 mA, SOD-323 package (smaller, 1.7 × 1.25 mm) | Lower VR limits use in 24 V systems; smaller footprint reduces layout area but increases thermal resistance | Select when lower VF and space savings outweigh reduced voltage margin |
| Vishay SS14-E3/5AT | 40 V VR, 1 A IF, VF = 550 mV @ 1 A, SMA package (larger, 4.5 × 2.7 mm) | Higher current rating supports higher-power clamps; larger thermal mass improves reliability at elevated ambient | Select when sustained >500 mA operation or higher thermal margin is required |
Compared with 1PS59SB20,115, NSSR0530MX offers lower VF in a smaller footprint but sacrifices 10 V reverse margin, while SS14-E3/5AT provides double the current rating and better thermal performance at the cost of board area - choice depends on voltage headroom, layout density, and thermal budget.
Availability
1PS59SB20,115 is available at Aetrix Electronics and suitable for DC-DC converter output clamping, I/O line protection, and automotive body control module designs requiring stable component supply and long-term industrial availability.
Supply support for 1PS59SB20,115 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The 1PS59SB20,115 belongs to NXP's legacy discrete Schottky diode product line, engineered for high-reliability, low-loss protection and clamping in space- and power-constrained embedded systems.
FAQ
What is the maximum reverse voltage rating for the 1PS59SB20,115?
The 1PS59SB20,115 has a maximum continuous reverse voltage (VR) rating of 40 V, as specified in the Absolute Maximum Ratings table. This value defines the highest DC or repetitive peak reverse voltage the device can withstand without breakdown under normal operating conditions, and must not be exceeded even momentarily in circuit design.
Does the 1PS59SB20,115 have a pin 2 connection?
No, pin 2 of the 1PS59SB20,115 is internally not connected (n.c.). The datasheet explicitly states "2: not connected", and this terminal must remain unconnected on the PCB to prevent unintended coupling or thermal stress. Only pins 1 (anode) and 3 (cathode) are electrically active.
What is the forward voltage of the 1PS59SB20,115 at 500 mA?
The forward voltage (VF) of the 1PS59SB20,115 is specified as a maximum of 550 mV at IF = 500 mA and Tj = 25 °C. This value reflects worst-case conduction loss under rated current and is critical for calculating efficiency in clamping and rectification applications where the 1PS59SB20,115 is deployed.
Is the 1PS59SB20,115 suitable for high-temperature environments?
Yes, the 1PS59SB20,115 supports operation up to a junction temperature (Tj) of 125 °C and storage temperatures from −65 °C to +150 °C. At 100 °C junction temperature, its reverse current rises to 10 mA at 35 V - a known and characterized behavior that must be accounted for in thermal design when using the 1PS59SB20,115 in hot environments.
What package type does the 1PS59SB20,115 use?
The 1PS59SB20,115 uses the SC-59 package, also designated SOT346 or TO-236, a 3-lead plastic surface-mount package measuring 1.3 mm × 2.7 mm with 1.0 mm height. Its outline matches JEDEC TO-236 standards and is compatible with standard SMT reflow profiles per NXP's recommended mounting conditions.
1PS59SB20,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 500mA
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 500 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 35 V
- Capacitance @ Vr, F:
- 90pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMT3; MPAK
- Operating Temperature - Junction:
- 125°C (Max)
1PS59SB20,115 FAQ
1.How can I place an order for 1PS59SB20,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PS59SB20,115 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 1PS59SB20,115 reliable?
The price and inventory of 1PS59SB20,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PS59SB20,115 is usually 5 days.
3.What payment methods are accepted for 1PS59SB20,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PS59SB20,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PS59SB20,115?
1PS59SB20,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PS59SB20,115 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 1PS59SB20,115?
For technical support, including 1PS59SB20,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PS59SB20,115 requirements.
6.How does Aetrix verify that 1PS59SB20,115 is sourced from the original manufacturer or authorized distributors?
All 1PS59SB20,115 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 1PS59SB20,115 meets industry standards.
7.What is the process for return or replacement of 1PS59SB20,115?
All 1PS59SB20,115 units undergo pre-shipment inspection (PSI). If there is an issue with 1PS59SB20,115, 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 1PS59SB20,115 part is unused and in its original packaging.
Return procedure for 1PS59SB20,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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