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Nexperia USA Inc. 1PS70SB20,115
- Part No.:
- 1PS70SB20,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
1PS70SB20,115.pdf
- Description:
- DIODE SCHOTTKY 40V 500MA SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:8,323
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Product details
Overview
1PS70SB20,115 from Nexperia is a planar Schottky barrier single diode with integrated guard ring for stress protection, housed in an SOT323 (SC-70) package. It delivers 500 mA forward current, 40 V reverse voltage rating, and 550 mV typical forward voltage at 500 mA - optimized for ultra-high-speed switching and reverse polarity protection in space-constrained automotive and industrial power rails.
For engineers reviewing the 1PS70SB20,115 datasheet, 1PS70SB20,115 pinout, 1PS70SB20,115 application, or 1PS70SB20,115 equivalent, key selection criteria include its AEC-Q101 qualification, low 60–90 pF capacitance at 0 V, and n.c. (pin 2) terminal configuration enabling layout flexibility in high-frequency clamping circuits.
Technical Context
This discrete Schottky diode employs a planar junction structure with an integrated guard ring to suppress edge breakdown and improve ruggedness under transient stress. Its low forward voltage and minimal junction capacitance stem from optimized metal-semiconductor interface design and small active die area.
The device operates across –55 °C to +125 °C ambient, with thermal resistance of 500 K/W (junction-to-ambient, FR4 PCB), and supports non-repetitive peak forward current up to 2 A for 8.3 ms half-sine pulses - critical for surge-tolerant line termination and clamping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - defines maximum DC or repetitive reverse bias before breakdown; suitable for 36 V automotive systems with margin. |
| Forward Current (IF) | 500 mA continuous - sets steady-state conduction capability without thermal runaway on standard FR4 layouts. |
| Forward Voltage (VF) | 550 mV at 500 mA, 25 °C - enables low-loss rectification and clamping with <0.275 W conduction loss. |
| Diode Capacitance (Cd) | 60–90 pF at 0 V, 1 MHz - ensures minimal signal distortion in >100 MHz termination and RF decoupling paths. |
| Reverse Current (IR) | 100 µA at 35 V, 25 °C - low leakage preserves battery life in always-on reverse polarity protection circuits. |
| Junction Temperature (Tj) | 125 °C max - allows operation in under-hood automotive environments without derating at full IF. |
Pinout & Package
Encapsulated in a 3-pin SOT323 (SC-70) surface-mount plastic package measuring 2.2 × 1.35 × 0.95 mm, this diode uses a compact footprint compatible with automated reflow assembly. Pin 2 is internally not connected, eliminating routing conflicts and simplifying PCB layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Input terminal for forward conduction path; connects to higher-potential side in clamping or polarity protection. |
| 2 | Not Connected (n.c.) | No internal bond wire or die connection; must be left floating or tied to ground only if required for mechanical stability. |
| 3 | Cathode (K) | Output/return terminal; sinks current during forward bias and provides low-impedance path to ground in reverse polarity schemes. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - enables direct use in infotainment and body control modules. |
| Integrated guard ring | Suppresses edge leakage and improves voltage standoff consistency - enhances long-term stability in high-humidity or contaminated environments. |
| Low forward voltage | 550 mV @ 500 mA reduces power dissipation by ~30% vs. comparable 700 mV Schottkys - extends thermal margin in dense power domains. |
| Low capacitance | 60–90 pF enables clean signal integrity in 100+ MHz USB, CAN FD, or Ethernet PHY termination networks. |
Applications
| Automotive Power Rail Protection | High-Speed Data Line Termination |
|---|---|
Use Scenario: Reverse battery connection in 12 V vehicle ECUs with persistent 5 V standby supplies. IC Role / Device Role / Timing Role: Unidirectional polarity guard placed between battery input and downstream LDOs or microcontrollers. Use Value: Prevents catastrophic damage during service without adding series resistance or voltage drop beyond 550 mV at full load. |
Use Scenario: RS-485 or CAN bus stub termination in distributed automotive sensor networks. IC Role / Device Role / Timing Role: Low-capacitance clamp limiting overshoot on differential pairs while preserving edge rate. Use Value: Maintains signal fidelity up to 5 Mbps with <90 pF loading - avoids timing skew and reflection-induced jitter. |
| Ultra-Fast Switching Clamping | Low-Power Supply Sequencing |
Use Scenario: Snubberless flyback clamp in isolated DC-DC converters for ADAS camera modules. IC Role / Device Role / Timing Role: Fast-recovery path absorbing transformer leakage energy during MOSFET turn-off. Use Value: Eliminates need for RC snubbers due to 2 A non-repetitive surge rating and sub-ns recovery - reduces BOM count and board area. |
Use Scenario: OR-ing diode in dual-supply backup systems (e.g., main + supercapacitor) for telematics units. IC Role / Device Role / Timing Role: Forward-biased isolation element enabling seamless switchover with minimal voltage loss. Use Value: Enables <550 mV dropout at 500 mA - preserves minimum operating voltage for 3.3 V logic during brownout transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RB520S-40T1G | Higher VF (600 mV typ. @ 500 mA); same 40 V VR and SOT-23 package. | Lacks AEC-Q101 qualification; rated for commercial temp range only (–40 to +85 °C). | Select when automotive qualification is unnecessary and cost sensitivity outweighs 50 mV VF penalty. |
| SS14 | Higher IF (1 A), larger DO-214AC package; VF = 500 mV @ 1 A but Cd = 110 pF. | Not suitable for SMT density-critical designs; better for high-current, lower-frequency clamping. | Choose for >500 mA average loads where board space permits larger footprint and higher capacitance is acceptable. |
Compared with RB520S-40T1G and SS14, the 1PS70SB20,115 uniquely combines AEC-Q101 compliance, ultra-low capacitance (<90 pF), and SOT323 size - making it optimal for automotive signal integrity and space-limited power protection where both reliability and high-frequency performance are mandatory.
Availability
1PS70SB20,115 is available at Aetrix Electronics and suitable for automotive power rail protection, high-speed data line termination, and ultra-fast switching clamping requiring stable component supply and consistent AEC-Q101 traceability.
Supply support for 1PS70SB20,115 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
Nexperia is a global semiconductor expert specializing in high-performance, reliable discrete, logic, and MOSFET devices - founded as part of NXP and now independently focused on essential semiconductors for automotive, industrial, and mobile markets.
The 1PS70SB20,115 belongs to Nexperia's AEC-Q101-qualified Schottky diode portfolio, engineered specifically for robust, low-loss protection and clamping in harsh-environment automotive electronics.
FAQ
Is pin 2 (n.c.) electrically isolated or should it be grounded?
Pin 2 is internally not connected - no bond wire or die connection exists. It must remain electrically floating unless grounding is required solely for mechanical stability or EMI shielding per your PCB stack-up. Connecting it to any potential risks unintended parasitic coupling or solder bridging.
What is the maximum allowable PCB copper area for thermal relief when mounting 1PS70SB20,115?
The specified Rth(j-a) = 500 K/W assumes a single-sided FR4 board with standard SOT323 footprint (2.65 × 2.35 mm solder lands). Increasing copper area beyond the recommended 1.325 × 1.85 mm pad dimensions yields diminishing returns; doubling copper does not halve thermal resistance due to epoxy resin limitations.
Can 1PS70SB20,115 replace BAT54S in existing designs?
No - BAT54S is a dual-series Schottky in SOT-363 with shared cathode, while 1PS70SB20,115 is a single-diode SOT323 with n.c. pin. Electrical specs differ: BAT54S has 30 V VR and 240 mV VF @ 10 mA, making it unsuitable as a drop-in replacement for 40 V, 500 mA applications requiring the 1PS70SB20,115's ratings.
Does the 100 µA IR spec at 35 V apply at elevated temperatures?
No - the 100 µA reverse current is specified at 25 °C. At 125 °C junction temperature, IR increases to 10 mA (pulsed, Tj = 100 °C), reflecting exponential thermal dependence. Designers must verify leakage impact on standby current budgets using the Fig. 2 curve, not the 25 °C value.
1PS70SB20,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
- Operating Temperature - Junction:
- 125°C (Max)
1PS70SB20,115 FAQ
1.How can I place an order for 1PS70SB20,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PS70SB20,115 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 1PS70SB20,115 reliable?
The price and inventory of 1PS70SB20,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PS70SB20,115 is usually 5 days.
3.What payment methods are accepted for 1PS70SB20,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PS70SB20,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PS70SB20,115?
1PS70SB20,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PS70SB20,115 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 1PS70SB20,115?
For technical support, including 1PS70SB20,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PS70SB20,115 requirements.
6.How does Aetrix verify that 1PS70SB20,115 is sourced from the original manufacturer or authorized distributors?
All 1PS70SB20,115 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 1PS70SB20,115 meets industry standards.
7.What is the process for return or replacement of 1PS70SB20,115?
All 1PS70SB20,115 units undergo pre-shipment inspection (PSI). If there is an issue with 1PS70SB20,115, 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 1PS70SB20,115 part is unused and in its original packaging.
Return procedure for 1PS70SB20,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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