My Inquiry
My Account
Nexperia USA Inc. 1PS76SB40-QX
- Part No.:
- 1PS76SB40-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
1PS76SB40-QX.pdf
- Description:
- 1PS76SB40-Q/SOD323/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:8,606
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1PS76SB40-Q 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 low-loss, ultra-high-speed switching and clamping device in power rail protection and signal conditioning circuits.
For engineers reviewing the 1PS76SB40-Q datasheet, 1PS76SB40-Q pinout, 1PS76SB40-Q application, or 1PS76SB40-Q equivalent, key selection criteria include its low VF at low IF, sub-1 µA IR at 30 V, AEC-Q101 qualification, 5 pF junction capacitance, and thermal resistance of 450 K/W on FR4 PCB - all critical for compact automotive and portable power management designs.
Technical Context
This Schottky diode leverages a metal–semiconductor junction to achieve fast recovery (no minority carrier storage), enabling operation in ultra-high-speed switching applications up to several hundred MHz. Its low forward voltage drop minimizes conduction loss in low-voltage DC/DC bias networks and clamping paths.
The device operates with a maximum junction temperature of 150 °C and is characterized across -40 °C to +125 °C ambient, with reverse leakage rising predictably from 1 µA at 30 V/25 °C to ~10 µA at 40 V/25 °C - confirming stable performance under automotive thermal stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - supports 24 V automotive systems with 67% derating margin against transients |
| Forward Voltage (VF) | 380 mV @ 1 mA - enables efficient clamping in low-current sensing and logic-level protection |
| Reverse Current (IR) | 1 µA @ 30 V - ensures minimal leakage in battery-backed or always-on standby rails |
| Junction Capacitance (Cd) | 5 pF @ 0 V, 1 MHz - preserves signal integrity in RF-coupled or high-frequency timing paths |
| Thermal Resistance (Rth(j-a)) | 450 K/W - defines power dissipation limit of ~111 mW on standard FR4 single-sided copper |
| Peak Forward Surge (IFSM) | 200 mA @ 10 ms - withstands short-duration load dump or ESD-induced current spikes |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
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 higher-potential node during forward conduction; marking bar identifies this terminal |
| 2 | Anode (A) | Connected to lower-potential node; current flows from anode to cathode when forward-biased |
Key Features
| Feature | Design Value |
|---|---|
| High switching speed | No minority carrier storage → <1 ns reverse recovery time, suitable for >100 MHz clamping |
| Low leakage current | 1 µA max at 30 V/25 °C → negligible standby drain in always-on automotive modules |
| Low forward voltage | 380 mV @ 1 mA → reduces voltage offset in precision reference clamp networks |
| Small footprint | SOD323 package occupies only 2.1 mm² PCB area → ideal for space-constrained ADAS sensors |
| AEC-Q101 qualification | Qualified per stress test standard for discrete semiconductors → meets automotive Tier-1 BOM requirements |
Applications
| Automotive Power Rail Protection | USB Port Polarity Protection |
|---|---|
Use Scenario: Reverse polarity protection on 12 V/24 V vehicle infotainment power input. IC Role / Device Role / Timing Role: Schottky diode placed in series with supply rail to block reverse connection while minimizing dropout. Use Value: 380 mV VF at low IF keeps voltage loss below 4% at 100 mA, preserving regulator headroom. |
Use Scenario: Preventing damage from incorrect USB cable insertion in portable diagnostic tools. IC Role / Device Role / Timing Role: Low-capacitance anode-to-VBUS clamp preventing backfeed into host controller. Use Value: 5 pF Cd avoids signal integrity degradation on USB 2.0 D+/D− lines near connector. |
| Low-Power Sensor Bias Clamping | Logic-Level Signal Translation |
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temp) from overvoltage transients. IC Role / Device Role / Timing Role: Cathode tied to rail, anode to signal line - clamps positive excursions to VDD + VF. Use Value: Sub-400 mV VF ensures clamping threshold stays within ±0.5 V of rail, compatible with 3.3 V ADC inputs. |
Use Scenario: Level-shifting between 1.8 V microcontroller GPIO and 3.3 V peripheral I/O. IC Role / Device Role / Timing Role: Anode at 1.8 V domain, cathode at 3.3 V domain - blocks reverse current while passing forward logic highs. Use Value: 120 mA IF rating supports multiple parallel GPIOs without thermal saturation. |
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 (ON Semiconductor) | Same SOD-323 package; VF = 370 mV @ 1 mA; IR = 0.5 µA @ 30 V; not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial/commercial but not safety-critical vehicle ECUs | Select when AEC-Q101 is not required and lower leakage is prioritized |
| NSR0230HT1G (onsemi) | SOD-123 package (larger); VF = 360 mV @ 1 mA; IR = 1 µA @ 30 V; AEC-Q101 qualified | Requires 3× more PCB area; higher thermal mass improves surge handling but limits high-density layouts | Select when higher IFSM (400 mA) and proven field reliability outweigh footprint constraints |
Compared with RB520S-40T1G and NSR0230HT1G, the 1PS76SB40-Q uniquely balances AEC-Q101 compliance, SOD323 miniaturization, and 1 µA leakage at 30 V - making it optimal for space-limited automotive modules where qualification and size are non-negotiable.
Availability
1PS76SB40-Q is available at Aetrix Electronics and suitable for automotive power rail protection, USB interface clamping, low-power sensor biasing, and logic-level translation requiring stable component supply and long-term lifecycle support.
Supply support for 1PS76SB40-Q 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 leading global semiconductor expert focused on high-volume, high-reliability essential semiconductors for automotive, industrial, and consumer markets.
The 1PS76SB40-Q belongs to Nexperia's AEC-Q101-qualified Schottky diode portfolio, engineered specifically for robust, low-loss protection and clamping in harsh automotive environments.
FAQ
Is the 1PS76SB40-Q suitable for continuous 120 mA DC operation?
No - the 120 mA rating is the absolute maximum pulsed forward current (IF). Continuous operation is limited by thermal dissipation: at 380 mV VF, 120 mA yields 45.6 mW power loss, which exceeds the 22 mW safe limit on FR4 (Rth(j-a) = 450 K/W, Tj(max) = 150 °C). Derate to ≤50 mA for sustained DC use.
What does the 'S4' marking on the device indicate?
The 'S4' marking is the manufacturer-specific code for the 1PS76SB40-Q part number, per Table 4 of the datasheet. It appears adjacent to the cathode bar on the top surface of the SOD323 package and is used for visual identification and traceability during assembly and inspection.
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 silicon diode (~700 mV), reducing overshoot risk on 5 V tolerant inputs. However, its higher reverse leakage (1 µA vs. <10 nA for silicon) may affect high-impedance nodes; verify leakage impact in your specific bias network.
Does the AEC-Q101 qualification cover solder reflow profile compliance?
Yes - AEC-Q101 qualification includes temperature cycling, biased HAST, and reflow simulation tests per J-STD-020. The 1PS76SB40-Q is rated for standard lead-free reflow profiles (peak 260 °C, 30 s max), matching the SOD323 package outline and solder land recommendations in Figures 6 and 7 of the datasheet.
1PS76SB40-QX 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-QX FAQ
1.How can I place an order for 1PS76SB40-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PS76SB40-QX 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-QX reliable?
The price and inventory of 1PS76SB40-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PS76SB40-QX is usually 5 days.
3.What payment methods are accepted for 1PS76SB40-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PS76SB40-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PS76SB40-QX?
1PS76SB40-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PS76SB40-QX 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-QX?
For technical support, including 1PS76SB40-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PS76SB40-QX requirements.
6.How does Aetrix verify that 1PS76SB40-QX is sourced from the original manufacturer or authorized distributors?
All 1PS76SB40-QX 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-QX meets industry standards.
7.What is the process for return or replacement of 1PS76SB40-QX?
All 1PS76SB40-QX units undergo pre-shipment inspection (PSI). If there is an issue with 1PS76SB40-QX, 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-QX part is unused and in its original packaging.
Return procedure for 1PS76SB40-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PS76SB40-QX Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
