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Nexperia USA Inc. 1PS76SB21-QZ
- Part No.:
- 1PS76SB21-QZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
1PS76SB21-QZ.pdf
- Description:
- 1PS76SB21-Q/SOD323/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:4,639
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Product details
Overview
1PS76SB21-QZ from Nexperia is a planar Schottky barrier diode with integrated guard ring for stress protection, rated at 40 V reverse voltage and 200 mA forward current, featuring 550 mV forward voltage at 200 mA and 40 pF typical capacitance at 0 V - used in automotive-grade ultra-high-speed switching and reverse polarity protection circuits.
For engineers reviewing the 1PS76SB21-QZ datasheet, 1PS76SB21-QZ pinout, 1PS76SB21-QZ application, or 1PS76SB21-QZ equivalent, key selection criteria include AEC-Q101 qualification, SOD323 package footprint compatibility, low VF/low Cd trade-off, and thermal resistance of 450 K/W in FR4 single-sided copper mounting.
Technical Context
This Schottky diode employs a planar silicon structure with an integrated guard ring to enhance ruggedness against electrical overstress and transient voltage spikes. Its low forward voltage (550 mV @ 200 mA) and low junction capacitance (40–50 pF @ 1 MHz) enable fast switching transitions and minimal signal distortion in high-frequency clamping and termination roles.
The device operates across –65 °C to +150 °C ambient and junction temperature ranges, with pulsed forward current capability up to 1 A (8.3 ms half-sine), and is qualified per AEC-Q101 for automotive under-hood and infotainment power rail protection applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - maximum DC blocking capability without breakdown; sets upper limit for line termination or clamp voltage headroom. |
| Forward Current (IF) | 200 mA continuous - defines steady-state conduction capacity for low-power bias or protection paths. |
| Forward Voltage (VF) | 550 mV @ 200 mA - enables low-loss rectification and minimizes power dissipation in compact automotive modules. |
| Junction Capacitance (Cd) | 40 pF @ 0 V, 1 MHz - supports >100 MHz signal integrity in USB, LVDS, or CAN bus line termination. |
| Thermal Resistance (Rth(j-a)) | 450 K/W - requires careful PCB copper area design on FR4 to maintain Tj ≤ 150 °C at full load. |
| Reverse Leakage (IR) | 15 µA @ 30 V, 25 °C - ensures low standby current in battery-backed or always-on automotive subsystems. |
Pinout & Package
Encapsulated in the SOD323 (SC-76) surface-mount plastic package measuring 1.7 mm × 1.25 mm × 0.95 mm with 1.3 mm lead pitch, this diode uses a two-terminal configuration where the cathode is marked by a bar on the package body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Negative terminal; connected to ground or lower-potential node in reverse polarity protection or clamping configurations. |
| 2 | Anode (A) | Positive terminal; interfaces with supply rail or signal source; polarity must be observed during PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring integration | Enhances ESD and surge robustness without external components, critical for automotive transients per ISO 7637-2. |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity bias, and HTRB testing - no requalification needed for Tier-1 designs. |
| Low VF / low Cd balance | 550 mV VF and 40 pF Cd simultaneously support both efficiency and bandwidth in space-constrained signal path protection. |
| SOD323 footprint | Enables high-density routing on 4-layer ADAS camera modules and infotainment PCBs with minimal board area impact. |
Applications
| Ultra-High-Speed Switching | Voltage Clamping |
|---|---|
Use Scenario: High-frequency DC-DC converter synchronous rectification in automotive body control modules. IC Role / Device Role: Low-loss freewheeling diode replacing MOSFET body diode to reduce conduction loss and improve efficiency. Use Value: 550 mV VF cuts power loss by ~35% vs. standard silicon diodes at 200 mA, extending thermal margin in sealed enclosures. |
Use Scenario: Protecting CAN FD transceiver I/O pins from ESD and inductive kickback in vehicle networking nodes. IC Role / Device Role: Bidirectional clamping diode shunting transients to VCC or GND rails. Use Value: 40 pF capacitance avoids signal edge degradation at 5 Mbps, preserving bit timing integrity. |
| Line Termination | Reverse Polarity Protection |
Use Scenario: Impedance-matched termination of LVDS clock lines in ADAS sensor fusion processors. IC Role / Device Role: AC-coupled termination diode providing DC bias while minimizing capacitive loading. Use Value: 40–50 pF Cd remains stable over 0–30 V reverse bias, ensuring consistent termination impedance across operating range. |
Use Scenario: Input protection for 12 V automotive telematics power supplies exposed to battery reversal during jump-start events. IC Role / Device Role: Series-connected anode-to-load cathode-to-source Schottky blocking diode. Use Value: 40 V VR rating provides 10 V margin above nominal 12 V system, while 550 mV VF limits voltage drop to <2% at 200 mA load. |
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, 450 mV VF @ 200 mA, SOD-123 package (larger footprint) | Lacks AEC-Q101 qualification; suitable for industrial but not automotive production. | Select when cost sensitivity outweighs automotive compliance and board space allows larger SOD-123 placement. |
| Vishay VSKY220HM3/H | 20 V VR, 200 mA IF, 370 mV VF @ 200 mA, SOD-323 package, AEC-Q101 qualified | Lower VR limits use to sub-12 V systems; superior VF benefits ultra-low-power always-on circuits. | Prefer for 5 V or 3.3 V domains where 40 V headroom is unnecessary and lowest possible conduction loss is critical. |
Compared with NSR0230HT1G and VSKY220HM3/H, the 1PS76SB21-QZ uniquely balances 40 V rating, AEC-Q101 compliance, and SOD323 size - making it optimal for 12 V automotive signal and power rail protection where space, reliability, and voltage margin are jointly constrained.
Availability
1PS76SB21-QZ is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and body control unit designs requiring stable component supply, long-term lifecycle assurance, and AEC-Q101-compliant discrete semiconductors.
Supply support for 1PS76SB21-QZ 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 essential semiconductors - delivering discrete, logic, and MOSFET solutions optimized for automotive, industrial, and mobile applications.
The 1PS76SB21-QZ belongs to Nexperia's AEC-Q101-qualified Schottky diode product line, engineered specifically for automotive signal integrity, power rail protection, and space-constrained ECU designs demanding low VF, low Cd, and proven stress resilience.
FAQ
What is the maximum allowable junction temperature for continuous operation?
The absolute maximum junction temperature (Tj) is 150 °C. For reliable continuous operation, the device must be mounted on an FR4 PCB with single-sided copper using the recommended SOD323 footprint; thermal resistance is 450 K/W, so at 200 mA and 550 mV VF, power dissipation is 110 mW - resulting in ~50 °C rise above ambient at 25 °C, well within limit.
Is the 1PS76SB21-QZ suitable for reverse polarity protection in a 12 V automotive system?
Yes - its 40 V reverse voltage rating provides 28 V margin above 12 V nominal, and its 550 mV forward voltage causes only 0.55 V drop at 200 mA, minimizing impact on downstream circuitry. The AEC-Q101 qualification confirms suitability for automotive environments including jump-start and load-dump transients.
How does the integrated guard ring improve reliability?
The guard ring reduces electric field crowding at the PN junction periphery, suppressing premature avalanche breakdown and improving resistance to electrostatic discharge (ESD) and repetitive voltage transients. This is validated per AEC-Q101 test conditions including human-body model (HBM) and machine model (MM) ESD stress.
Can this diode replace a standard silicon diode in a 5 V USB line clamp application?
Yes - with 40 pF capacitance at 0 V and 15 µA reverse leakage at 30 V, it offers significantly faster response and lower signal distortion than silicon diodes. However, ensure the 40 V VR rating aligns with system-level transient protection requirements; for pure 5 V clamping, lower-VR alternatives may offer tighter voltage clamping thresholds.
1PS76SB21-QZ 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):
- 200mA
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 200 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 15 µA @ 30 V
- Capacitance @ Vr, F:
- 40pF @ 0V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
- Operating Temperature - Junction:
- 150°C
1PS76SB21-QZ FAQ
1.How can I place an order for 1PS76SB21-QZ through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PS76SB21-QZ 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 1PS76SB21-QZ reliable?
The price and inventory of 1PS76SB21-QZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PS76SB21-QZ is usually 5 days.
3.What payment methods are accepted for 1PS76SB21-QZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PS76SB21-QZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PS76SB21-QZ?
1PS76SB21-QZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PS76SB21-QZ 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 1PS76SB21-QZ?
For technical support, including 1PS76SB21-QZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PS76SB21-QZ requirements.
6.How does Aetrix verify that 1PS76SB21-QZ is sourced from the original manufacturer or authorized distributors?
All 1PS76SB21-QZ 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 1PS76SB21-QZ meets industry standards.
7.What is the process for return or replacement of 1PS76SB21-QZ?
All 1PS76SB21-QZ units undergo pre-shipment inspection (PSI). If there is an issue with 1PS76SB21-QZ, 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 1PS76SB21-QZ part is unused and in its original packaging.
Return procedure for 1PS76SB21-QZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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