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Nexperia USA Inc. 1PS79SB70,115
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- Part No.:
- 1PS79SB70,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
1PS79SB70,115.pdf
- Description:
- DIODE SCHOTTKY 70V 70MA SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:4,292
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Product details
Overview
1PS79SB70 from Nexperia is a general-purpose Schottky diode in SOD523 (SC-79) package, rated for 70 V reverse voltage and 70 mA forward current, with 410 mV forward voltage at 1 mA, 2 pF capacitance at 0 V, and 100 nA reverse leakage at 50 V - used for ultra-high-speed switching and voltage clamping in space-constrained DC-DC converters and signal line protection.
For engineers reviewing the 1PS79SB70 datasheet, 1PS79SB70 pinout, 1PS79SB70 application, or 1PS79SB70 equivalent, key selection criteria include low VF at low IF, minimal junction-to-ambient thermal resistance (450 K/W), cathode-marked SOD523 footprint compatibility, and verified performance across −40 °C to 125 °C ambient range.
Technical Context
This Schottky diode leverages a planar epitaxial construction to achieve fast recovery (no minority carrier storage), enabling operation beyond 100 MHz in RF detector and clamp circuits. Its low 2 pF capacitance and sub-1 V VF up to 15 mA support high-frequency rectification and transient suppression without significant signal distortion.
The device operates within a −65 °C to 150 °C junction temperature range and is qualified for reflow soldering only; thermal resistance of 450 K/W (junction-to-ambient, FR4 PCB, single-sided copper) defines its power dissipation limit under natural convection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 70 V - supports clamping in 48 V and 60 V industrial bus lines without breakdown |
| Forward Voltage (VF) | 410 mV @ 1 mA - minimizes conduction loss in low-current bias and sensing paths |
| Reverse Leakage (IR) | 100 nA @ 50 V - ensures negligible standby current in battery-backed circuits |
| Capacitance (Cd) | 2 pF @ 0 V, 1 MHz - preserves signal integrity in >100 MHz RF and clock line applications |
| Thermal Resistance (Rth(j-a)) | 450 K/W - limits power dissipation to ~111 mW at ΔT = 50 K on standard FR4 |
| Peak Forward Current (IFSM) | 100 mA @ 10 ms - withstands short-duration surge events in ESD-coupled interfaces |
Pinout & Package
Package: SOD523 (SC-79), plastic surface-mounted, 1.2 mm × 0.8 mm × 0.6 mm body, cathode indicated by marking bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to lower-potential node; marking bar identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to higher-potential node; forward conduction occurs when A > K by ≥410 mV |
Key Features
| Feature | Design Value |
|---|---|
| High switching speed | No stored charge - enables <1 ns recovery in clamping applications without tail current |
| Low leakage current | 10 µA max at VR = 70 V - maintains signal fidelity in high-impedance sample-and-hold circuits |
| Low capacitance | 2 pF typical - avoids loading effects on 100+ MHz clock or RF signal traces |
| High breakdown voltage | 70 V VR rating - allows use in 48 V telecom and PoE-powered subsystems without derating |
Applications
| DC-DC Converter Output Clamp | USB Data Line Protection |
|---|---|
Use Scenario: Clamps flyback voltage spikes at synchronous rectifier outputs in buck converters operating at 500 kHz–2 MHz. IC Role / Device Role / Timing Role: Fast-recovery Schottky clamp placed between switch node and output rail to suppress ringing and reduce EMI. Use Value: 410 mV VF and 2 pF capacitance minimize conduction loss and preserve switching edge integrity without adding delay. |
Use Scenario: Protects USB 2.0 D+/D− lines from ESD transients and overvoltage during hot-plug events. IC Role / Device Role / Timing Role: Low-capacitance steering diode shunting transients to ground while preserving 480 Mbps data eye. Use Value: 100 nA IR at 50 V prevents DC loading; 2 pF Cd avoids signal degradation above 100 MHz. |
| RF Detector Input Stage | Low-Power Sensor Bias Network |
Use Scenario: Rectifies weak RF signals (900 MHz ISM band) in energy harvesting receivers and RSSI detectors. IC Role / Device Role / Timing Role: Signal-path Schottky anode tied to antenna, cathode to sampling capacitor for envelope detection. Use Value: Sub-1 V VF at 1 mA enables detection of signals as low as −20 dBm without external amplification. |
Use Scenario: Provides temperature-stable bias current to MEMS pressure sensor bridges in battery-operated IoT nodes. IC Role / Device Role / Timing Role: Low-leakage series diode in precision current source path, setting 10 µA bias with minimal drift. Use Value: 100 nA IR at 50 V ensures bias error remains <0.1% over −40 °C to 85 °C ambient range. |
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 | 30 V VR rating, 0.35 V VF @ 1 mA, SOD-523 package | Limited to ≤30 V systems; unsuitable for 48 V bus clamping | Select when lower VF and cost priority outweigh voltage headroom needs |
| BAS70-04 | 70 V VR, 0.85 V VF @ 10 mA, SOT-23 package (2.9 mm × 1.3 mm) | 3.6× larger footprint; higher VF increases conduction loss in low-current bias | Choose only if board layout cannot accommodate SOD523 or requires hand-soldering |
Compared with RB520S-30T1G and BAS70-04, the 1PS79SB70 uniquely balances 70 V capability, ultra-low 410 mV VF at 1 mA, and minimal 1.2 mm × 0.8 mm footprint - making it optimal for high-density, high-voltage, low-power signal-path applications where size and efficiency are co-constrained.
Availability
1PS79SB70 is available at Aetrix Electronics and suitable for DC-DC converter output clamping, USB data line protection, RF detector input stages, and low-power sensor bias networks requiring stable component supply and long-term obsolescence management.
Supply support for 1PS79SB70 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, with leadership in automotive-qualified and industrial-grade components.
The 1PS79SB70 belongs to Nexperia's general-purpose Schottky diode portfolio, engineered for compact, high-efficiency signal conditioning and protection in consumer, industrial, and communications equipment.
FAQ
Is the 1PS79SB70 suitable for reflow soldering only?
Yes - the datasheet explicitly states reflow soldering is the only recommended method. Hand soldering or wave soldering may exceed thermal limits due to the SOD523 package's small mass and sensitivity to localized heating. Peak reflow temperature must not exceed 260 °C for ≤10 s per JEDEC J-STD-020.
What does the 'G' marking on the device indicate?
The 'G' marking corresponds to the type number 1PS79SB70 per Table 4 of the datasheet. It is laser-marked on the top surface adjacent to the cathode bar and serves as the manufacturer's traceable identification code - not a date or lot code.
Can the 1PS79SB70 replace BAS70-series diodes in existing designs?
Yes, with verification: both share 70 V VR and SOD523 packaging, but 1PS79SB70 has lower VF (410 mV vs. ~850 mV for BAS70-04 at 1 mA) and lower Cd (2 pF vs. ~5 pF). Layout compatibility is confirmed, but system-level validation of reduced forward drop and capacitance is required.
Does the 1PS79SB70 have automotive qualification?
No - the datasheet contains no AEC-Q200 stress test reporting or automotive-grade reliability data. It is specified for industrial and consumer use only. For automotive applications, Nexperia offers AEC-Q200-qualified variants such as PNE10030EP/SOT23.
1PS79SB70,115 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):
- 70 V
- Current - Average Rectified (Io):
- 70mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 15 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 70 V
- Capacitance @ Vr, F:
- 2pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
- Operating Temperature - Junction:
- 150°C (Max)
1PS79SB70,115 FAQ
1.How can I place an order for 1PS79SB70,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PS79SB70,115 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 1PS79SB70,115 reliable?
The price and inventory of 1PS79SB70,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PS79SB70,115 is usually 5 days.
3.What payment methods are accepted for 1PS79SB70,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PS79SB70,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PS79SB70,115?
1PS79SB70,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PS79SB70,115 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 1PS79SB70,115?
For technical support, including 1PS79SB70,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PS79SB70,115 requirements.
6.How does Aetrix verify that 1PS79SB70,115 is sourced from the original manufacturer or authorized distributors?
All 1PS79SB70,115 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 1PS79SB70,115 meets industry standards.
7.What is the process for return or replacement of 1PS79SB70,115?
All 1PS79SB70,115 units undergo pre-shipment inspection (PSI). If there is an issue with 1PS79SB70,115, 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 1PS79SB70,115 part is unused and in its original packaging.
Return procedure for 1PS79SB70,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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