NRVB0530T1G - 30V 0.5A Schottky Rectifier SOD-123 | onsemi
MPN: NRVB0530T1G ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.42 | $0.42 |
| 10 | $0.34 | $3.40 |
| 100 | $0.22 | $22.00 |
| 500 | $0.17 | $85.00 |
| 1,000 | $0.14 | $140.00 |
| 3,000 | $0.12 | $360.00 |
NRVB0530T1G Overview
A Schottky rectifier is a type of diode that uses a metal-semiconductor junction instead of a PN junction, resulting in lower forward voltage drop, faster switching speed, and no reverse recovery charge. As a member of the broader Schottky diode family, it sits hierarchically under rectifier -> diode -> discrete semiconductor. Compared to standard silicon rectifiers, Schottky rectifiers offer significantly higher switching efficiency, which is why they dominate low-voltage synchronous rectification, DC-DC converters, and reverse-polarity protection circuits.
Key specifications for the NRVB0530T1G include a maximum DC reverse voltage of 30 V, an average rectified forward current of 500 mA, and a forward voltage drop of 430 mV typical at 500 mA. The device is housed in a compact SOD-123 surface-mount package and carries the NRVB prefix designation, indicating it has been qualified by onsemi for automotive and other demanding application environments. The SOD-123 package provides a low thermal footprint while supporting a peak forward surge current suitable for transient load conditions.
From an electrical standpoint, the low forward voltage of 430 mV at full load significantly reduces conduction losses versus a comparable 1N5819-class rectifier, while the absence of reverse recovery charge eliminates switching losses in high-frequency applications. This makes the NRVB0530T1G a strong fit for buck converter output rectification, USB power switches, and battery protection circuits where efficiency and thermal performance are tightly constrained.
Typical applications for the NRVB0530T1G include low-voltage DC-DC converter rectification, free-wheeling diodes across inductive loads such as relays and solenoids, reverse-polarity protection on automotive and industrial bus rails, OR-ing diodes in redundant power designs, and switching power supply output stages. Its compact SOD-123 package enables placement directly at the load or connector for shortest possible current loop.
When designing with this device, ensure the trace width carrying 500 mA is sized to limit voltage drop and heating. Place the diode as close as practical to the connector or inductive source to minimize the switched current loop area, which reduces EMI. For continuous operation near the rated current, derate by at least 20 percent to keep the junction temperature within the safe operating area.
This page synthesizes onsemi datasheet parameters, distributor pricing tiers, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single decision-ready reference for selecting and sourcing the NRVB0530T1G.
Drop-in alternatives for NRVB0530T1G — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MBR0530T1G
✅ Drop-In📋 Reference alternative (not in catalog)
NRVB0530T3G
✅ Drop-In📋 Reference alternative (not in catalog)
NRVB0530T1G-VF01
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MBRS0530T1G
✅ Drop-In📋 Reference alternative (not in catalog)
NRVB0530T1G Maximum Ratings & Electrical Characteristics
| Diode Type | Schottky Rectifier |
| Maximum DC Reverse Voltage (Vr) | 30 V |
| Average Rectified Forward Current (Io) | 500 mA |
| Forward Voltage (Vf) max @ If | 430 mV @ 500 mA |
| Reverse Recovery Time (trr) | Schottky (no minority carrier recovery, negligible trr) |
| Package | SOD-123 |
| Mounting Type | Surface Mount |
| Pin Count | 2 |
| Operating Temperature | -55C to +150C (junction, per onsemi datasheet) |
| Configuration | Single |
| Automotive Qualification | Yes (NRVB prefix, qualified for automotive use) |
| RoHS Status | ROHS3 Compliant |
| REACH | REACH Unaffected |
| MSL Level | MSL 1 (Unlimited) |
| Lead-Free | Yes |
NRVB0530T1G Pin Configuration
| Pin 1 | Anode — Anode terminal of the Schottky rectifier |
| Pin 2 | Cathode — Cathode terminal of the Schottky rectifier (marked with band on package) |
Typical Applications
NRVB0530T1G is suitable for 6 applications: Low-Voltage DC-DC Converter Rectification, Automotive Reverse-Polarity Protection, Free-Wheeling Diode for Relays and Solenoids, USB and Battery Charger Polarity Guard, OR-ing Diode for Redundant Power Supplies, Switch-Mode Power Supply Output Rectifier.
Low-Voltage DC-DC Converter Rectification
The NRVB0530T1G serves as the output rectifier in low-voltage buck and synchronous-or-asynchronous DC-DC converters where its 430 mV Vf at 500 mA minimizes conduction loss versus a 1N4001-class diode. With a 30 V reverse rating it tolerates the switching transients of 5 V, 12 V, and 24 V rails, while the Schottky's negligible reverse recovery charge eliminates the switching loss present with ultrafast silicon rectifiers at 100 kHz to 1 MHz switching frequencies typical of point-of-load converters.
Recommended
Automotive Reverse-Polarity Protection
The NRVB0530T1G is well suited as a series reverse-polarity protection element on automotive 12 V bus inputs, where its NRVB prefix indicates onsemi's automotive qualification and its 30 V reverse voltage withstands load-dump transients well below the maximum rating. Placed in series with the supply rail, the diode blocks reversed battery connection while adding only 430 mV of forward drop, which is far more efficient than a P-MOSFET solution for sub-500 mA loads such as telematics modules and sensor clusters.
Recommended
Free-Wheeling Diode for Relays and Solenoids
The NRVB0530T1G protects MOSFET drivers and microcontroller I/O pins from the inductive kickback generated when relay coils and solenoid valves are de-energized in automotive and industrial systems. Its 430 mV forward drop at 500 mA is far below the coil current of typical automotive relays, and the 30 V reverse rating easily clamps the inductive flyback of a 12 V coil to safe levels. The compact SOD-123 footprint allows placement directly across the coil terminals for the smallest possible switched current loop.
Recommended
USB and Battery Charger Polarity Guard
The NRVB0530T1G provides a compact, low-loss polarity guard on USB VBUS inputs and single-cell Li-ion charger ports, where its 30 V reverse voltage exceeds the USB VBUS maximum (5 V) plus transient margin, and the 430 mV forward drop leaves adequate headroom for downstream regulators. Placed at the connector, the diode prevents reverse current when a device is plugged into a powered-off host, while its MSL 1 rating allows standard SMT assembly on consumer charger boards.
Recommended
OR-ing Diode for Redundant Power Supplies
The NRVB0530T1G acts as an OR-ing diode between two low-voltage redundant supplies, such as a USB input and an internal battery, isolating each source while allowing either to power the downstream rail. The 430 mV forward drop is acceptable for sub-500 mA combined loads, and the Schottky's lack of reverse recovery prevents cross-conduction oscillation between the two sources. Its small SOD-123 footprint supports dense layouts in handheld and IoT devices.
Recommended
Switch-Mode Power Supply Output Rectifier
The NRVB0530T1G is used as the secondary-side output rectifier in small flyback and forward converter power supplies up to 500 mA, where its low forward voltage and negligible reverse recovery improve overall efficiency and reduce switching losses at 50 kHz to 500 kHz switching frequencies. Its 30 V reverse rating covers 5 V and 12 V output rails with substantial design margin, and the SOD-123 package's small thermal footprint allows placement on the secondary-side copper pour without dedicated heatsinking.
Recommended
Recommended Products Summary
Engineering reference data for NRVB0530T1G — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MBR0530T1G | NRVB0530T3G | NRVB0530T1G-VF01 |
|---|---|---|---|---|
| Package | SOD-123 | SOD-123 - same | SOD-123 - same | SOD-123 - same |
| Brand | onsemi | onsemi - same | onsemi - same | onsemi - same |
| Reverse Voltage (Vr) | 30 V | 30 V | 30 V | 30 V |
| Average Forward Current (Io) | 500 mA | 500 mA | 500 mA | 500 mA |
| Forward Voltage (Vf max @ 500 mA) | 430 mV | 430 mV | 430 mV | 430 mV |
| Reverse Recovery | Schottky (negligible) | Schottky (negligible) | Schottky (negligible) | Schottky (negligible) |
| Automotive Qualification | Yes (NRVB prefix) | No (standard MBR prefix) | Yes (NRVB prefix) | Yes (NRVB prefix) |
| Reel Size | 7-inch (T1) | 7-inch (T1) | 13-inch (T3) | 7-inch (T1) |
Key Differentiators
- NRVB prefix for automotive-grade qualification (vs MBR0530T1G)
- Available on 7-inch (T1) reel for prototyping (vs NRVB0530T3G)
- Lowest forward voltage drop at 500 mA in SOD-123 footprint (vs MBRS0530T1G (SMB package, same die family))
Design Notes
Estimated: at continuous 500 mA forward current and 430 mV forward drop, the NRVB0530T1G dissipates roughly 215 mW of conduction loss. The SOD-123 package has a typical theta_JA around 200 C/W on a 1-oz copper 1 square-inch pad; this implies a junction temperature rise near 43 C above ambient. Derate continuous current to about 60 percent of the 500 mA Io rating when the device is operated in enclosed or high-ambient-temperature environments.
Place the NRVB0530T1G as close as practical to the source of the inductive kickback or to the connector it guards, to minimize the switched current loop area. Use a copper pad of at least 50 sq mm on the cathode side to spread heat, and avoid routing high-current return paths under the diode's anode pin where they could couple noise into sensitive analog traces.
Do not use the NRVB0530T1G on rails with continuous reverse stress above 30 V, including the negative halves of 24 V rectified buses that can exceed 34 V. For reverse-polarity protection, ensure the diode is wired in the correct orientation - the banded end is the cathode, which must face the protected load - and verify that the 430 mV forward drop is acceptable for downstream regulators that require tight input headroom.
Compliance Information
ROHS3 compliant and REACH unaffected per onsemi material declaration. NRVB prefix indicates onsemi automotive qualification (qualified for automotive and other demanding use cases). MSL 1 (Unlimited) per IPC/JEDEC J-STD-020.
