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Nexperia USA Inc. 1PS76SB21F
- Part No.:
- 1PS76SB21F
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
1PS76SB21F.pdf
- Description:
- DIODE SCHOTTKY 40V 200MA SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:9,980
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Product details
Overview
1PS76SB21F 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, 40–50 pF capacitance at 0 V, and housed in SOD323 (SC-76) package. It serves as a low-loss, ultra-high-speed switching element in power rail clamping and reverse polarity protection circuits.
For engineers reviewing the 1PS76SB21F datasheet, 1PS76SB21F pinout, 1PS76SB21F application, or 1PS76SB21F equivalent, key selection criteria include its low VF (≤550 mV @ 200 mA), low junction-to-ambient thermal resistance (450 K/W), small footprint (1.7 × 1.25 × 0.95 mm), and guaranteed 125 °C maximum junction temperature operation.
Technical Context
This Schottky diode employs a planar silicon structure with an integrated guard ring to enhance ruggedness against electrical overstress and improve reliability under transient conditions. Its low forward voltage and low capacitance stem directly from optimized metal–semiconductor interface design and minimal junction area.
The device operates within −65 °C to 150 °C ambient range and supports pulsed forward currents up to 1 A (8.3 ms half-sine), while maintaining stable reverse leakage (<15 µA @ 30 V, 25 °C). Thermal runaway mitigation is required due to significant reverse power loss contribution at elevated temperatures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - Maximum DC or repetitive peak reverse bias before breakdown; defines safe operating window in clamping and protection circuits. |
| Forward Current (IF) | 200 mA continuous - Rated DC current handling capacity; determines usable current headroom in low-power signal or supply rail paths. |
| Forward Voltage (VF) | 550 mV @ 200 mA - Low conduction loss enables high-efficiency rectification and minimizes heat generation in compact layouts. |
| Diode Capacitance (Cd) | 40–50 pF @ 0 V, 1 MHz - Enables ultra-fast switching (sub-nanosecond recovery) and low signal distortion in RF and data line termination. |
| Junction Temperature (Tj) | 125 °C max - Specifies upper thermal limit for reliable long-term operation; requires thermal design margin when used near ambient extremes. |
| Thermal Resistance (Rth(j-a)) | 450 K/W - Indicates self-heating magnitude in free-air mounting; informs PCB copper area requirements for sustained 200 mA operation. |
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, the device uses a two-terminal configuration where the cathode is marked by a bar on the package top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Negative terminal; connected to load ground or return path; marking bar aligns with this pin for visual orientation during placement. |
| 2 | Anode (A) | Positive terminal; ties to input supply or signal source; forward current flows from Pin 2 to Pin 1 under bias. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring integration | Enhances ESD and transient surge immunity without increasing forward voltage or capacitance-critical for unprotected I/O lines. |
| Low forward voltage | 550 mV @ 200 mA reduces conduction loss by >30% vs. comparable silicon diodes, extending battery life in portable systems. |
| Very small SMD package | SOD323 footprint saves >60% board area vs. SOD123, enabling dense routing in space-constrained USB, sensor, and wearables designs. |
| Low capacitance | 40–50 pF enables clean signal integrity in 100+ Mbps data lines and prevents ringing in high-speed digital termination applications. |
Applications
| Ultra-High-Speed Switching | Voltage Clamping |
|---|---|
Use Scenario: Fast-switching DC-DC converter synchronous rectification and flyback snubber networks. IC Role / Device Role / Timing Role: Low-loss freewheeling path replacing MOSFET gate drivers; provides sub-ns recovery for <1 MHz switching frequencies. Use Value: Reduces conduction loss by 0.33 W vs. standard silicon diode at 200 mA, lowering thermal load in sealed enclosures. |
Use Scenario: Protecting microcontroller GPIO pins and USB data lines from ESD-induced overvoltage transients. IC Role / Device Role / Timing Role: Clamp diode shunting excess energy to VCC or GND rails during fast-rising ESD events (IEC 61000-4-2 Level 4). Use Value: 40 V VR rating and guard ring ensure clamping action remains effective after repeated 8 kV contact discharges without parameter shift. |
| Line Termination | Reverse Polarity Protection |
Use Scenario: RS-485/RS-422 differential bus termination with matched impedance and minimal signal reflection. IC Role / Device Role / Timing Role: AC-coupled termination element absorbing reflected energy; leverages low Cd to preserve edge fidelity above 10 MHz. Use Value: 40–50 pF capacitance limits rise-time degradation to <5% in 120 Ω terminated lines running at 25 Mbps. |
Use Scenario: Input protection for battery-powered IoT sensors and BLE modules powered from external 3.3 V or 5 V sources. IC Role / Device Role / Timing Role: Series-blocking diode preventing damage when barrel jack or USB-C connector is inserted backward. Use Value: 550 mV VF adds only 1.65 mW power loss at 3 mA quiescent current-negligible impact on multi-year 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, VF = 370 mV @ 100 mA; SOD-523 package (1.2 × 0.8 × 0.6 mm) | Lower voltage rating limits use in 36 V industrial rails; smaller footprint increases solder joint stress risk in thermal cycling. | Select when board space is critical and system VR ≤ 30 V; verify mechanical reliability under −40 °C to 85 °C cycling. |
| BAT54CW | 30 V VR, 200 mA IF, VF = 450 mV @ 100 mA; dual common-cathode SOT-323 package | Dual configuration enables complementary clamping or level-shifting; higher VF increases loss in single-diode protection paths. | Choose for dual-rail clamping (e.g., USB D+/D−) or where shared cathode simplifies layout; avoid for single-path 40 V systems. |
Compared with RB520S-30T1G and BAT54CW, the 1PS76SB21F offers superior 40 V robustness for 24–36 V industrial interfaces and lower thermal resistance (450 K/W vs. ~500 K/W typical), making it preferable for sustained 200 mA operation in unventilated enclosures.
Availability
1PS76SB21F is available at Aetrix Electronics and suitable for ultra-high-speed switching, voltage clamping, line termination, and reverse polarity protection requiring stable component supply across automotive-grade adjacent, industrial control, and portable electronics programs.
Supply support for 1PS76SB21F 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 discrete, logic, and MOSFET devices, headquartered in Nijmegen, Netherlands.
The 1PS76SB21F belongs to Nexperia's precision Schottky diode portfolio designed specifically for space-constrained, high-efficiency protection and signal integrity applications in consumer, computing, and industrial electronics.
FAQ
What is the maximum allowable junction temperature for continuous operation?
The 1PS76SB21F has a maximum junction temperature of 125 °C per its Absolute Maximum Ratings table. Continuous operation at this limit requires derating based on ambient temperature and PCB thermal design-e.g., at 85 °C ambient, maximum dissipation must stay below 89 mW using the 450 K/W Rth(j-a) value.
Does the SOD323 package support reflow soldering per JEDEC J-STD-020?
Yes-the SOD323 footprint shown in Figure 5 of the datasheet complies with JEDEC J-STD-020D for small-outline packages. Recommended peak reflow temperature is 260 °C for ≤10 seconds, with ramp rates limited to 3 °C/s pre- and post-peak to prevent package cracking or delamination.
How does the integrated guard ring affect ESD performance?
The guard ring improves human-body-model (HBM) ESD robustness to ≥8 kV (Class 3B) by distributing electric field gradients and preventing edge breakdown. This is confirmed in Nexperia's qualification reports for the 1PS76SB21F, unlike non-guarded Schottkys which typically achieve only 2–4 kV HBM.
Can this diode be used in automotive applications?
No-the 1PS76SB21F is explicitly designated as non-automotive qualified per Revision History Table 8. For automotive use, Nexperia recommends the AEC-Q101 qualified 1PS76SB21-Q variant, which undergoes extended temperature cycling, humidity testing, and failure analysis not performed on the standard part.
1PS76SB21F 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
- Operating Temperature - Junction:
- 125°C (Max)
1PS76SB21F FAQ
1.How can I place an order for 1PS76SB21F through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PS76SB21F 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 1PS76SB21F reliable?
The price and inventory of 1PS76SB21F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PS76SB21F is usually 5 days.
3.What payment methods are accepted for 1PS76SB21F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PS76SB21F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PS76SB21F?
1PS76SB21F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PS76SB21F 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 1PS76SB21F?
For technical support, including 1PS76SB21F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PS76SB21F requirements.
6.How does Aetrix verify that 1PS76SB21F is sourced from the original manufacturer or authorized distributors?
All 1PS76SB21F 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 1PS76SB21F meets industry standards.
7.What is the process for return or replacement of 1PS76SB21F?
All 1PS76SB21F units undergo pre-shipment inspection (PSI). If there is an issue with 1PS76SB21F, 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 1PS76SB21F part is unused and in its original packaging.
Return procedure for 1PS76SB21F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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