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Nexperia USA Inc. 1PS79SB31,315
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- Part No.:
- 1PS79SB31,315
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
1PS79SB31,315.pdf
- Description:
- DIODE SCHOTTKY 30V 200MA SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:8,000
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Product details
Overview
1PS79SB31,315 from Nexperia is a planar Schottky barrier diode in SOD523 (SC-79) package, rated for 30 V reverse voltage and 200 mA forward current, with typical forward voltage of 255–300 mV at 10 mA. It serves as an ultra-low-VF rectifier and clamping device in space-constrained, low-power portable electronics.
For engineers reviewing the 1PS79SB31,315 datasheet, 1PS79SB31,315 pinout, 1PS79SB31,315 application, or 1PS79SB31,315 equivalent, key selection criteria include forward voltage at 10–200 mA, reverse leakage under pulsed 10 V bias, junction-to-ambient thermal resistance (450 K/W), and SC-79 footprint compatibility with high-density PCB layouts.
Technical Context
This Schottky diode uses a planar silicon structure with guard ring protection to suppress edge breakdown and ensure stable reverse leakage performance up to 30 V. Its low-barrier metal-semiconductor junction enables fast switching (no minority carrier storage) and sub-300 mV conduction at 10 mA.
Thermal design relies on its 450 K/W junction-to-ambient resistance when mounted on FR4 with single-sided copper, limiting continuous power dissipation to ~110 mW at 25 °C ambient. Reverse recovery is effectively zero due to majority-carrier conduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 30 V - Maximum DC or repetitive peak reverse bias before breakdown; defines clamping headroom in protection circuits. |
| Forward Current (IF) | 200 mA - Continuous DC forward current rating; sets max steady-state rectification capacity. |
| Forward Voltage (VF) | 255–300 mV @ 10 mA - Low conduction loss critical for battery runtime in handheld devices. |
| Reverse Leakage (IR) | ≤30 µA @ 10 V, pulsed - Enables reliable voltage clamping without excessive standby drain. |
| Diode Capacitance (Cd) | 20–25 pF @ 1 V, 1 MHz - Supports ultra-high-speed switching in RF or digital signal paths. |
| Junction Temp (Tj) | 125 °C - Maximum allowable operating junction temperature; constrains thermal derating in sealed enclosures. |
Pinout & Package
Package: SOD523 (SC-79), ultra-small surface-mount plastic package measuring 1.2 mm × 0.8 mm × 0.6 mm, with flat leads optimized for reflow soldering on high-density PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Negative terminal; marked by cathode bar on package top; connects to lower-potential node in rectifier/clamp configuration. |
| 2 | Anode (A) | Positive terminal; connects to higher-potential node; current flows from Pin 2 to Pin 1 under forward bias. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low forward voltage | VF ≤ 300 mV at 10 mA enables >95% efficiency in 3.3 V rail clamping and low-voltage rectification. |
| Guard ring protection | Suppresses edge leakage and improves VR consistency across temperature and process variation. |
| SOD523 footprint | 1.2 mm × 0.8 mm body allows placement in <1.5 mm pitch layouts, supporting miniaturized wearables and IoT sensors. |
| Low capacitance | 25 pF max at 1 V supports >100 MHz signal integrity in ESD clamp and RF detector applications. |
Applications
| Battery Protection Circuit | USB Port Clamping |
|---|---|
Use Scenario: Preventing reverse battery insertion damage in coin-cell powered sensors. IC Role / Device Role / Timing Role: Unidirectional blocking diode placed in series with battery input to enforce polarity. Use Value: 255 mV VF minimizes voltage drop, preserving usable battery range in 1.8–3.0 V systems. | Use Scenario: Protecting USB 2.0 data lines (D+/D−) from ESD transients and overvoltage. IC Role / Device Role / Timing Role: Low-capacitance shunt clamp between signal line and ground. Use Value: 25 pF Cd avoids signal integrity degradation while clamping ±15 kV HBM spikes. |
| Low-Power Rectifier | RF Detector Diode |
Use Scenario: Harvesting microwatt-level energy from NFC or RFID field coupling. IC Role / Device Role / Timing Role: Half-wave rectifier converting AC field into DC bias for passive sensor nodes. Use Value: Sub-300 mV turn-on enables rectification down to ~200 mV input amplitude, extending harvestable field range. | Use Scenario: Demodulating 900 MHz ISM band signals in simple wireless receivers. IC Role / Device Role / Timing Role: Envelope detector converting RF carrier to baseband voltage. Use Value: Fast majority-carrier response and 25 pF Cd support operation up to 1 GHz with minimal distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RB520S-30T1G | Higher VF (320 mV typ @ 10 mA); same 30 V VR, SOD-523 package | Less suitable for sub-3.0 V energy harvesting due to higher conduction loss | Prefer when cost sensitivity outweighs 65 mV VF penalty and thermal margin is ample |
| NSR0230HT1G | Lower IF rating (120 mA); same VR, smaller SOD-923 footprint (0.9 × 0.7 mm) | Not recommended for 200 mA continuous loads; better for ultra-dense layouts | Choose only if board area is constrained below 1.0 mm² and load current stays ≤120 mA |
Compared with RB520S-30T1G and NSR0230HT1G, the 1PS79SB31,315 delivers the lowest forward voltage in its class while maintaining full 200 mA rating and industry-standard SOD523 land pattern-making it optimal for battery-critical, high-efficiency rectification where both loss and layout flexibility matter.
Availability
1PS79SB31,315 is available at Aetrix Electronics and suitable for battery protection circuits, USB port clamping, and low-power rectification requiring stable component supply and consistent SOD523 packaging across production batches.
Supply support for 1PS79SB31,315 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, headquartered in Nijmegen, Netherlands.
The 1PS79SB31,315 belongs to Nexperia's Schottky diode portfolio designed specifically for ultra-low-power, space-constrained applications including wearables, IoT endpoints, and portable medical devices.
FAQ
What is the maximum allowable junction temperature for continuous operation?
The absolute maximum junction temperature is 125 °C per IEC 60134. For continuous operation at 200 mA, thermal design must ensure junction temperature remains ≤125 °C, which requires limiting ambient temperature or adding copper pour given the 450 K/W Rth(j-a) on standard FR4.
Is the 1PS79SB31,315 suitable for automotive applications?
No. This device is not automotive-qualified. Nexperia explicitly states that unless otherwise specified in the datasheet, products are not tested or warranted for automotive use, including AEC-Q101 stress testing or temperature range compliance beyond −65 °C to +125 °C ambient.
How does the guard ring affect reverse leakage performance?
The integrated guard ring reduces electric field crowding at the silicon periphery, suppressing surface leakage paths. This ensures reverse current remains ≤30 µA at 10 V (pulsed) across temperature, improving long-term reliability in humid or contaminated environments.
What is the marking code for the 1PS79SB31,315 on the package?
The device is marked with "G3" on the top surface of the SOD523 package. The cathode is indicated by a visible bar adjacent to Pin 1, consistent with JEDEC SC-79 orientation standards.
1PS79SB31,315 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io):
- 200mA
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 200 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 30 µA @ 10 V
- Capacitance @ Vr, F:
- 25pF @ 1V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
- Operating Temperature - Junction:
- 125°C (Max)
1PS79SB31,315 FAQ
1.How can I place an order for 1PS79SB31,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PS79SB31,315 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 1PS79SB31,315 reliable?
The price and inventory of 1PS79SB31,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PS79SB31,315 is usually 5 days.
3.What payment methods are accepted for 1PS79SB31,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PS79SB31,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PS79SB31,315?
1PS79SB31,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PS79SB31,315 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 1PS79SB31,315?
For technical support, including 1PS79SB31,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PS79SB31,315 requirements.
6.How does Aetrix verify that 1PS79SB31,315 is sourced from the original manufacturer or authorized distributors?
All 1PS79SB31,315 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 1PS79SB31,315 meets industry standards.
7.What is the process for return or replacement of 1PS79SB31,315?
All 1PS79SB31,315 units undergo pre-shipment inspection (PSI). If there is an issue with 1PS79SB31,315, 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 1PS79SB31,315 part is unused and in its original packaging.
Return procedure for 1PS79SB31,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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