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Nexperia USA Inc. 1PS79SB70,315
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- Part No.:
- 1PS79SB70,315
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
1PS79SB70,315.pdf
- Description:
- DIODE SCHOTTKY 70V 70MA SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:6,524
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Product details
Overview
1PS79SB70 from Nexperia is a general-purpose Schottky diode in an ultra-small SOD523 (SC-79) surface-mount package, rated for 70 V reverse voltage, 70 mA forward current, and 410 mV forward voltage at 1 mA, used for ultra-high-speed switching and voltage clamping in space-constrained signal path protection circuits.
For engineers reviewing the 1PS79SB70 datasheet, 1PS79SB70 pinout, 1PS79SB70 application, or 1PS79SB70 equivalent, key selection criteria include low forward voltage drop, sub-2 pF capacitance at zero bias, 100 nA reverse leakage at 50 V, thermal resistance of 450 K/W, and cathode-marked SOD523 footprint compatibility with high-density PCB layouts.
Technical Context
This Schottky diode leverages a metal–semiconductor junction to achieve fast recovery times and minimal stored charge, enabling operation beyond 100 MHz in clamping and steering roles. Its low 2 pF junction capacitance and 100 nA reverse leakage at 50 V support stable RF and high-frequency digital signal integrity.
The device operates across −65 °C to +150 °C ambient temperature, with junction temperature limited to 150 °C and thermal resistance of 450 K/W in free-air FR4 mounting. It is qualified for reflow soldering only and not rated for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 70 V - Maximum blocking voltage before breakdown; enables use in 48 V rail protection and 5 V–24 V logic-level clamping. |
| Forward Current (IF) | 70 mA continuous - Sustained conduction capability suitable for low-power signal routing and bias network steering. |
| Forward Voltage (VF) | 410 mV at 1 mA - Low conduction loss preserves signal swing and minimizes self-heating in battery-powered sensing nodes. |
| Junction Capacitance (Cd) | 2 pF at 0 V, 1 MHz - Enables minimal signal distortion in >100 MHz clock or RF detector applications. |
| Reverse Leakage (IR) | 100 nA at 50 V, 25 °C - Ensures negligible standby current in precision voltage reference or sample-hold circuits. |
| Thermal Resistance (Rth(j-a)) | 450 K/W - Requires careful PCB copper area planning for sustained 70 mA operation in enclosed enclosures. |
Pinout & Package
Package: SOD523 (SC-79), plastic surface-mounted, 2-terminal, 1.2 mm × 0.8 mm × 0.6 mm body. Cathode identified by marking bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to lower-potential node; marking bar aligns with this pin for visual polarity verification during placement. |
| 2 | Anode (A) | Connected to higher-potential node; forward conduction occurs when A is ≥ K + 410 mV (at 1 mA). |
Key Features
| Feature | Design Value |
|---|---|
| High switching speed | Sub-nanosecond recovery enabled by Schottky barrier; eliminates minority-carrier storage delay in pulse shaping. |
| Low leakage current | 100 nA at 50 V ensures <1 µW power loss in always-on bias networks for analog front-ends. |
| Low capacitance | 2 pF junction capacitance maintains signal rise/fall time integrity in >100 MHz data lines and RF detectors. |
| High breakdown voltage | 70 V VR rating supports use in industrial 24 V/48 V control I/O protection without derating. |
Applications
| USB Data Line Protection | Low-Voltage Logic Clamping |
|---|---|
Use Scenario: Protecting USB 2.0 D+/D− lines from ESD transients and overvoltage coupling in portable devices. IC Role / Device Role / Timing Role: Passive clamping diode shunting excess voltage to VDD or GND rails during transient events. Use Value: 410 mV VF and 2 pF Cd preserve signal edge fidelity while limiting excursion to ±0.7 V above/below rails. |
Use Scenario: Clamping 3.3 V or 5 V microcontroller GPIO pins against overshoot from inductive loads or hot-plug events. IC Role / Device Role / Timing Role: Bidirectional voltage limiter placed between I/O pin and supply rail. Use Value: 70 V VR withstands 1 kV ESD contact discharge per IEC 61000-4-2 without degradation. |
| RF Detector Input Stage | Power Supply OR-ing Diode |
Use Scenario: Demodulating AM signals in 868 MHz ISM band receivers using envelope detection. IC Role / Device Role / Timing Role: Zero-bias rectifier converting RF carrier amplitude into baseband DC voltage. Use Value: 2 pF Cd and low series resistance enable efficient detection up to 1 GHz with minimal insertion loss. |
Use Scenario: OR-ing two 3.3 V backup supplies in always-on IoT sensor nodes to prevent backfeed and ensure seamless switchover. IC Role / Device Role / Timing Role: Unidirectional power path selector minimizing voltage drop between sources and load. Use Value: 410 mV VF reduces power loss by >50% versus standard silicon diodes, extending battery life. |
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, 200 mA IF, 370 mV VF at 1 mA - lower voltage rating but higher current capacity. | Suitable for ≤24 V systems only; not interchangeable in 48 V clamping or telecom line protection. | Select when higher forward current headroom is required and VR ≤30 V suffices. |
| SD103AW-7-F | 40 V VR, 200 mA IF, 450 mV VF at 10 mA - higher VF and larger SOD-123 package (3.7 mm × 1.6 mm). | Requires larger PCB area; less suitable for ultra-dense mobile or wearable PCBs. | Choose when board space permits and tighter VF tolerance at 10 mA is prioritized over size. |
Compared with RB520S-30T1G and SD103AW-7-F, the 1PS79SB70 uniquely balances ultra-small SOD523 footprint, 70 V blocking, and sub-450 mV VF - making it optimal for miniaturized 48 V-compatible signal clamping where layout density and voltage margin are critical.
Availability
1PS79SB70 is available at Aetrix Electronics and suitable for USB interface protection, low-voltage logic clamping, and RF detector input stages requiring stable component supply across consumer, industrial, and communications product lifecycles.
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 advanced packaging and automotive-qualified components.
The 1PS79SB70 belongs to Nexperia's general-purpose Schottky diode portfolio, engineered for compact, high-speed signal integrity in cost-sensitive, space-constrained consumer and industrial electronics.
FAQ
Is the 1PS79SB70 suitable for automotive applications?
No. The 1PS79SB70 is explicitly designated as non-automotive qualified in Nexperia's legal disclaimers. It has not undergone AEC-Q101 stress testing or automotive-grade qualification, and its use in safety-critical or life-support systems is prohibited per manufacturer guidance.
What is the recommended soldering method for the SOD523 package?
Reflow soldering is the only recommended method per Nexperia's datasheet. Wave soldering and hand soldering are not supported due to thermal stress risks. The device requires precise profile control with peak temperature ≤260 °C and dwell time within JEDEC J-STD-020 limits for MSN Level 1.
How does the 2 pF capacitance affect high-frequency performance?
At 1 MHz and 0 V bias, the 2 pF junction capacitance introduces <0.8 Ω reactance at 100 MHz, ensuring minimal loading on RF signal paths. This enables clean operation in 868 MHz ISM band detectors and preserves rise times below 350 ps in 3.3 V logic clamping.
Can the 1PS79SB70 replace BAS70-series diodes in existing designs?
Yes, with verification: both share SOD523 package, cathode marking, and Schottky architecture. However, 1PS79SB70 offers higher 70 V VR versus BAS70's 70 V (BAS70-04W) or 60 V (BAS70-05W), and lower VF than most BAS70 variants at 1 mA - confirming functional equivalence in clamping and steering roles.
1PS79SB70,315 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):
- 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)
1PS79SB70,315 FAQ
1.How can I place an order for 1PS79SB70,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PS79SB70,315 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 1PS79SB70,315 reliable?
The price and inventory of 1PS79SB70,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PS79SB70,315 is usually 5 days.
3.What payment methods are accepted for 1PS79SB70,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PS79SB70,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PS79SB70,315?
1PS79SB70,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PS79SB70,315 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 1PS79SB70,315?
For technical support, including 1PS79SB70,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PS79SB70,315 requirements.
6.How does Aetrix verify that 1PS79SB70,315 is sourced from the original manufacturer or authorized distributors?
All 1PS79SB70,315 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 1PS79SB70,315 meets industry standards.
7.What is the process for return or replacement of 1PS79SB70,315?
All 1PS79SB70,315 units undergo pre-shipment inspection (PSI). If there is an issue with 1PS79SB70,315, 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 1PS79SB70,315 part is unused and in its original packaging.
Return procedure for 1PS79SB70,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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