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Nexperia USA Inc. 1PS76SB40-QF
- Part No.:
- 1PS76SB40-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
1PS76SB40-QF.pdf
- Description:
- 1PS76SB40-Q/SOD323/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:4,512
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Product details
Overview
1PS76SB40-QF from Nexperia is a general-purpose Schottky diode in SOD323 (SC-76) package, rated for 40 V reverse voltage, 120 mA forward current, 380 mV forward voltage at 1 mA, 5 pF capacitance at 0 V, and qualified to AEC-Q101 for automotive use. It serves as a high-speed clamping and switching element in power rail protection and signal conditioning circuits.
For engineers reviewing the 1PS76SB40-QF datasheet, 1PS76SB40-QF pinout, 1PS76SB40-QF application, or 1PS76SB40-QF equivalent, key selection criteria include low VF at low IF, sub-1 µA IR at 30 V, AEC-Q101 qualification, SOD323 footprint compatibility, and thermal resistance of 450 K/W in free air on FR4.
Technical Context
This Schottky diode leverages a platinum-silicide barrier structure to achieve low forward voltage and fast recovery without minority-carrier storage delay. Its 5 pF junction capacitance and <10 µA reverse leakage at 40 V support high-frequency clamping in DC-DC feedback paths and ESD-sensitive interfaces.
The device operates across −65 °C to +150 °C ambient and junction temperature ranges, with thermal resistance from junction-to-ambient measured at 450 K/W on standard single-sided FR4 PCBs - enabling reliable performance in under-hood automotive modules and compact industrial power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - supports 36 V automotive systems with 10 % margin against transients |
| Forward Voltage (VF) | 380 mV at 1 mA - minimizes conduction loss in low-current bias and sensing paths |
| Reverse Current (IR) | 1 µA at 30 V - ensures low standby power in always-on voltage clamp circuits |
| Junction Capacitance (Cd) | 5 pF at 0 V, 1 MHz - enables clean signal integrity in >100 MHz digital I/O protection |
| Thermal Resistance (Rth(j-a)) | 450 K/W - defines maximum power dissipation of ~111 mW in free-air FR4 layout |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
SOD323 (SC-76) plastic surface-mount package: 1.7 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to lower-potential node in clamping configuration; marking bar identifies this terminal |
| 2 | Anode (A) | Connected to higher-potential node or signal source; carries forward current into cathode |
Key Features
| Feature | Design Value |
|---|---|
| High switching speed | No minority-carrier storage; typical trr < 1 ns - eliminates switching tail in 10+ MHz pulse applications |
| Low leakage current | ≤10 µA at 40 V, 25 °C - preserves battery life in always-on automotive wake-up circuits |
| Low forward voltage | 380 mV at 1 mA - reduces voltage drop in precision reference clamping and bias networks |
| Small footprint | SOD323 package - saves >60 % board area vs. SOD123 while maintaining solder joint reliability |
Applications
| Automotive Power Rail Clamping | USB Data Line ESD Protection |
|---|---|
Use Scenario: Suppressing load-dump transients on 12 V battery-fed ECUs. IC Role / Device Role / Timing Role: Fast-acting shunt clamp placed between supply rail and ground. Use Value: 40 V VR rating and AEC-Q101 qualification ensure robustness against ISO 7637-2 Pulse 5a/b events. |
Use Scenario: Protecting USB 2.0 D+/D− lines from ±8 kV contact ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Low-capacitance steering diode in series-shunt topology. Use Value: 5 pF Cd and sub-1 ns recovery prevent signal distortion at 480 Mbps data rates. |
| Low-Power Sensor Bias Clamp | DC-DC Converter Feedback Snubber |
Use Scenario: Limiting op-amp input voltage excursion in automotive ambient sensor front-ends. IC Role / Device Role / Timing Role: Precision voltage limiter referenced to supply or ground. Use Value: 380 mV VF at 1 mA enables accurate ±0.4 V clamping without loading microamp-level sensor outputs. |
Use Scenario: Damping ringing on optocoupler feedback path in isolated flyback converters. IC Role / Device Role / Timing Role: High-speed snubber diode across RC compensation network. Use Value: Low Cd and fast recovery suppress 10–50 MHz parasitic oscillations without adding phase lag. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSR0230HT1G | 30 V VR, 200 mA IF, VF = 450 mV @ 10 mA, SOD-123 package | Higher IF but lower VR; larger footprint increases board area by 2.3× | Select when higher surge current handling is required and VR margin < 10 V is acceptable |
| Vishay VS-1EQH03-M3/5BT | 30 V VR, 300 mA IF, VF = 410 mV @ 10 mA, SOD-323 package, no AEC-Q101 | Same footprint but unqualified for automotive; IR = 5 µA @ 30 V | Select for cost-sensitive industrial designs where AEC-Q101 is not mandated |
Compared with NSR0230HT1G and VS-1EQH03-M3/5BT, the 1PS76SB40-QF uniquely balances 40 V VR, AEC-Q101 compliance, and SOD323 size - making it optimal for space-constrained automotive modules requiring transient immunity and long-term reliability.
Availability
1PS76SB40-QF is available at Aetrix Electronics and suitable for automotive power rail clamping, USB ESD protection, low-power sensor biasing, and DC-DC feedback snubbing requiring stable component supply and full traceability.
Supply support for 1PS76SB40-QF 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 components and advanced packaging.
The 1PS76SB40-QF belongs to Nexperia's AEC-Q101-qualified Schottky diode product line, engineered specifically for automotive power management and signal integrity applications demanding low VF, low Cd, and proven reliability.
FAQ
Is the 1PS76SB40-QF suitable for continuous 40 V reverse bias operation?
No. The 40 V rating is an absolute maximum limiting value per IEC 60134. Continuous operation should be limited to ≤32 V to maintain reliability margin, especially at elevated temperatures above 85 °C where IR increases significantly.
What is the meaning of the 'S4' marking on the device body?
The 'S4' marking is the manufacturer-specific code for the 1PS76SB40-QF part number, laser-etched on the top surface of the SOD323 package. The cathode is identified by the bar adjacent to pin 1, consistent with JEDEC SC-76 orientation standards.
Can this diode replace a standard silicon PN diode in a 5 V logic clamping circuit?
Yes - its 380 mV forward voltage at 1 mA provides tighter clamping than a typical 700 mV silicon diode, reducing overshoot risk. However, its higher reverse leakage (up to 10 µA at 40 V) requires verification in ultra-low-power sleep modes.
Does the 450 K/W thermal resistance apply to reflow-soldered PCBs?
Yes - the 450 K/W Rth(j-a) is measured on a standard FR4 PCB with single-sided 1 oz copper and the recommended reflow footprint (Figure 6). Performance degrades to ~620 K/W with wave soldering or reduced copper area.
1PS76SB40-QF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 120mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 40 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 40 V
- Capacitance @ Vr, F:
- 5pF @ 0V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
- Operating Temperature - Junction:
- 150°C
1PS76SB40-QF FAQ
1.How can I place an order for 1PS76SB40-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PS76SB40-QF 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 1PS76SB40-QF reliable?
The price and inventory of 1PS76SB40-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PS76SB40-QF is usually 5 days.
3.What payment methods are accepted for 1PS76SB40-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PS76SB40-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PS76SB40-QF?
1PS76SB40-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PS76SB40-QF 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 1PS76SB40-QF?
For technical support, including 1PS76SB40-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PS76SB40-QF requirements.
6.How does Aetrix verify that 1PS76SB40-QF is sourced from the original manufacturer or authorized distributors?
All 1PS76SB40-QF 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 1PS76SB40-QF meets industry standards.
7.What is the process for return or replacement of 1PS76SB40-QF?
All 1PS76SB40-QF units undergo pre-shipment inspection (PSI). If there is an issue with 1PS76SB40-QF, 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 1PS76SB40-QF part is unused and in its original packaging.
Return procedure for 1PS76SB40-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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