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Nexperia USA Inc. 1PS79SB30YL
- Part No.:
- 1PS79SB30YL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
1PS79SB30YL.pdf
- Description:
- 1PS79SB30/SOD523/SC-79
- Quantity:
- Payment:
- Shipping:
Inventory:5,500
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Product details
Overview
1PS79SB30YL from Nexperia is a planar Schottky barrier diode with integrated guard ring for stress protection, rated at 40 V reverse voltage and 200 mA forward current, featuring 320–360 mV forward voltage at 10 mA and 25 °C, and ultra-low 0.5 µA reverse leakage at 25 V - deployed in voltage clamping and ultra-high-speed switching circuits in space-constrained portable power rails.
For engineers reviewing the 1PS79SB30YL datasheet, 1PS79SB30YL pinout, 1PS79SB30YL application, or 1PS79SB30YL equivalent, this discrete Schottky diode delivers verified low VF, low IR, and AEC-Q101 qualification - critical for automotive body electronics, USB port protection, and DC-DC converter freewheeling paths where thermal efficiency and footprint minimization are design priorities.
Technical Context
This Schottky diode employs a planar silicon structure with an integrated guard ring to suppress edge breakdown under transient stress, enabling stable operation up to 150 °C junction temperature. Its low 20 pF capacitance at 1 V reverse bias and sub-1 ns reverse recovery time support high-frequency switching above 100 MHz.
The device operates within a defined absolute maximum rating envelope: 40 V VR, 200 mA IF continuous, and 1 A non-repetitive peak forward surge (8.3 ms half-sine), with thermal resistance of 450 K/W from junction-to-ambient on standard FR4 PCB - confirming suitability for unheatsinked, low-power SMD layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - supports input rail clamping in 3.3 V/5 V/12 V systems without avalanche risk |
| Forward Current (IF) | 200 mA continuous - sufficient for load-switch blocking and signal-level rectification |
| Forward Voltage (VF) | 320–360 mV @ 10 mA, 25 °C - reduces conduction loss by >40 % vs. standard silicon diodes |
| Reverse Leakage (IR) | ≤0.5 µA @ 25 V, pulsed - ensures minimal standby current in battery-backed circuits |
| Diode Capacitance (Cd) | 20 pF @ 1 V, 1 MHz - enables clean signal integrity in RF detector and ESD clamp applications |
| Junction Temperature (Tj) | 150 °C max - validated for under-hood automotive modules per AEC-Q101 |
| Package | SOD523 (SC-79) - 1.2 × 0.8 × 0.6 mm footprint, compatible with 0201 reflow profiles |
Pinout & Package
Encapsulated in the SOD523 (SC-79) ultra-small surface-mount plastic package, the 1PS79SB30YL features a 2-terminal configuration with cathode marked by a visible bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to lower-potential node; marking bar identifies this terminal for polarity-sensitive placement |
| 2 | Anode (A) | Connected to higher-potential node; accepts forward bias for low-loss conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring protection | Prevents premature edge breakdown under voltage transients - extends reliability in noisy automotive environments |
| Ultra-low forward voltage | 320–360 mV @ 10 mA enables >90 % efficiency in 3.3 V buck converter synchronous rectifier replacement |
| Low reverse leakage | 0.5 µA max at 25 V ensures <1 µW standby dissipation in always-on sensor nodes |
| SOD523 package | 1.2 × 0.8 mm footprint saves >60 % board area vs. SOD323 - critical for wearable and TWS earbud designs |
Applications
| USB Port ESD Clamping | Automotive LED Tail Light Blocking |
|---|---|
Use Scenario: Protects USB 2.0 data lines from ±8 kV contact ESD per IEC 61000-4-2 using low-capacitance bidirectional clamping. IC Role / Device Role / Timing Role: Passive voltage clamp placed between D+ and D− lines and ground, leveraging fast turn-on and low VF to shunt transients. Use Value: 20 pF capacitance avoids signal integrity degradation; AEC-Q101 qualification ensures field durability in infotainment USB ports. |
Use Scenario: Blocks reverse current during load-dump events in 12 V LED tail light modules. IC Role / Device Role / Timing Role: Reverse-polarity protection diode in series with LED string, conducting only during normal forward bias. Use Value: 40 V VR withstands ISO 7637-2 Pulse 5a (load dump up to 35 V); 150 °C Tj rating survives under-bumper ambient conditions. |
| DC-DC Converter Freewheeling | Smartphone Power-Rail OR'ing |
Use Scenario: Freewheeling path in 1 MHz, 3.3 V step-down converter powering PMIC core rails. IC Role / Device Role / Timing Role: Low-loss catch diode replacing MOSFET sync switch in cost-sensitive buck regulators. Use Value: 320–360 mV VF cuts conduction loss by 55 % vs. 1N5711; SOD523 thermal resistance allows self-cooling at 150 mA. |
Use Scenario: OR'ing diode between battery and USB power inputs in dual-supply smartphone PMICs. IC Role / Device Role / Timing Role: Unidirectional current gate preventing backfeed between sources while minimizing dropout. Use Value: 0.5 µA IR prevents battery drain during USB-off state; 0.6 mm height clears stacked camera module assemblies. |
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 (ON Semiconductor) | Higher VF (370–450 mV @ 10 mA); same 40 V VR; SOD-523 package | Marginally higher conduction loss in battery-sensitive apps; identical footprint | Select when legacy ON Semi BOM alignment required; verify thermal rise at 200 mA |
| NSR0230HT1G (onsemi) | Lower IR (0.1 µA @ 25 V); same VF range; SOD-523, but 0.55 mm height vs. 0.6 mm | Better for ultra-low-leakage backup power paths; slightly tighter mechanical clearance | Prefer for coin-cell-powered RTC circuits; confirm solder paste volume compatibility |
Compared with RB520S-30T1G and NSR0230HT1G, the 1PS79SB30YL offers the best balance of low VF, AEC-Q101 qualification, and production traceability - making it optimal for automotive-grade portable electronics where both reliability and efficiency are simultaneously constrained.
Availability
1PS79SB30YL is available at Aetrix Electronics and suitable for automotive lighting control, USB interface protection, and portable DC-DC power conversion requiring stable component supply across multi-year production cycles.
Supply support for 1PS79SB30YL 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, with manufacturing in Europe and Asia.
The 1PS79SB30YL belongs to Nexperia's AEC-Q101-qualified Schottky diode portfolio, engineered specifically for automotive body electronics and portable power management where miniaturization, thermal robustness, and transient immunity are mandatory.
FAQ
Is the 1PS79SB30YL qualified for automotive use?
Yes - it is fully qualified to AEC-Q101 for stress testing of discrete semiconductors, including temperature cycling, HTRB, and ESD. It is approved for under-hood and cabin applications such as LED lighting, USB charging ports, and body control modules, with full traceability and PPAP documentation available upon request.
What is the thermal resistance of the 1PS79SB30YL on a standard PCB?
The junction-to-ambient thermal resistance (Rth(j-a)) is 450 K/W when mounted on a single-sided FR4 PCB with tin-plated copper and the standard SOD523 footprint. This value assumes free-air convection and no thermal vias or copper pours - adding 2 oz copper and two thermal vias reduces Rth(j-a) to ~220 K/W.
Can the 1PS79SB30YL replace a 1N5711 in high-frequency rectification?
Yes - its 20 pF capacitance and sub-1 ns reverse recovery time outperform the 1N5711 (≈40 pF, 5 ns), making it suitable for RF detection, 100+ MHz switching, and fast transient clamping. However, its 40 V VR rating is lower than the 1N5711's 70 V, so voltage margin must be verified in the target circuit.
How is polarity identified on the 1PS79SB30YL package?
Polarity is indicated by a laser-marked bar on the top surface of the SOD523 package, aligned with Pin 1 (cathode). The anode (Pin 2) is the unmarked terminal. This marking matches JEDEC SC-79 orientation and is visible under 10× magnification or automated optical inspection (AOI) systems.
1PS79SB30YL 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):
- 40 V
- Current - Average Rectified (Io):
- 200mA
- Voltage - Forward (Vf) (Max) @ If:
- 600 mV @ 200 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 nA @ 40 V
- Capacitance @ Vr, F:
- 20pF @ 1V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
- Operating Temperature - Junction:
- 150°C
1PS79SB30YL FAQ
1.How can I place an order for 1PS79SB30YL through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PS79SB30YL 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 1PS79SB30YL reliable?
The price and inventory of 1PS79SB30YL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PS79SB30YL is usually 5 days.
3.What payment methods are accepted for 1PS79SB30YL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PS79SB30YL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PS79SB30YL?
1PS79SB30YL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PS79SB30YL 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 1PS79SB30YL?
For technical support, including 1PS79SB30YL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PS79SB30YL requirements.
6.How does Aetrix verify that 1PS79SB30YL is sourced from the original manufacturer or authorized distributors?
All 1PS79SB30YL 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 1PS79SB30YL meets industry standards.
7.What is the process for return or replacement of 1PS79SB30YL?
All 1PS79SB30YL units undergo pre-shipment inspection (PSI). If there is an issue with 1PS79SB30YL, 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 1PS79SB30YL part is unused and in its original packaging.
Return procedure for 1PS79SB30YL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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