SRVBS260NT3G - 60V 2A Surface Mount Schottky Rectifier | onsemi
料号： SRVBS260NT3G ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.42 | $0.42 |
| 10 | $0.36 | $3.60 |
| 100 | $0.24 | $24.00 |
| 500 | $0.18 | $90.00 |
| 1,000 | $0.14 | $140.00 |
| 5,000 | $0.11 | $550.00 |
SRVBS260NT3G 概述
A Schottky rectifier is a semiconductor diode that uses a metal-semiconductor junction instead of a P-N junction, producing a lower forward voltage drop (typically 0.3 V to 0.7 V versus 0.7 V to 1.0 V for silicon P-N diodes) and faster switching. This class of diode sits within the broader hierarchy of rectifier diode -> discrete semiconductor -> power component, and is a fundamental building block of any switch-mode power supply, freewheeling path, or polarity-protection circuit.
Key features include a 60 V reverse test voltage (VRRM), 2 A maximum average forward rectified current, a maximum forward voltage of 0.63 V at 2 A, and an operating temperature range of -55 C to +125 C. The SMB outline is rated for a peak reflow temperature of 260 C, making the part compatible with standard JEDEC J-STD-020 reflow profiles. The device is well suited to low-voltage, high-frequency switching power supplies, freewheeling diodes, and polarity-protection diodes where its low VF and fast recovery characteristics reduce conduction and switching losses simultaneously.
The epitaxial Schottky construction provides tight forward-voltage distribution and stable leakage behavior over temperature. The metal overlay contact reduces localized heating at the junction, while oxide passivation guards the junction surface against contamination and humidity-induced drift. Compared to conventional rectifier diodes, the SRVBS260NT3G offers an order-of-magnitude faster reverse recovery, which is the dominant loss mechanism in 100 kHz to 1 MHz switching converters. Designers can therefore use the part directly across synchronous-rectifier replacement gaps, across low-side freewheeling positions, and as a discrete OR-ing diode in redundant power paths.
Typical applications include low-voltage DC-DC converters, freewheeling diodes across inductive loads (relays, solenoids, motors), reverse-polarity protection at the input of a battery-powered device, and OR-ing of redundant power rails in telecom and server hardware. The 60 V rating provides ample margin for 24 V industrial buses and 48 V telecom rails when used as a reverse-polarity blocker in series with the source.
When designing with this device, account for the negative temperature coefficient of the forward voltage: VF decreases as junction temperature rises, which can cause thermal runaway if the part is mounted on a small land pattern without adequate copper heat-spreading. Use a minimum 50 mm^2 of copper per terminal and keep trace lengths short to minimize parasitic inductance in high-di/dt loops.
This page synthesizes distributor pricing, drop-in onsemi and cross-brand alternatives, and practical thermal and PCB layout guidance not consolidated in any single manufacturer or distributor resource.
直接替换替代料： SRVBS260NT3G ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： SRVBS260NT3G （相同外形与封装尺寸） ——差异在于 Package, RoHS Status, Manufacturer, Average Rectified Forward Current (IF(AV)), Configuration.
快速对比工具——选择替代料号进行并排对比：
NRVBS260NT3G
✅ 直接替换✓ 有现货
$0.1348 / 个
查看数据手册 →MBRS260T3G
✅ 直接替换✓ 有现货
$0.15 / 个
查看数据手册 →SRVBS260NT3G
✅ 直接替换✓ 有现货
$0.11 / 个
查看数据手册 →SS26-E3/52T
✅ 直接替换📋 参考替代料（不在目录中）
B260-13-F
✅ 直接替换📋 参考替代料（不在目录中）
SRVBS260NT3G 最大额定值与电气特性
| Manufacturer | onsemi |
| Product Type | Schottky Power Rectifier (single diode) |
| 封装 | SMB (surface mount, C-bend leads) |
| 安装类型 | Surface Mount |
| Reverse Test Voltage (VRRM) | 60 V |
| Maximum Average Forward Current (IF(AV)) | 2 A |
| Maximum Forward Voltage (VF) | 0.63 V at 2 A |
| 工作温度范围 | -55 C to +125 C |
| Peak Reflow Temperature | 260 C |
| Terminal Form | C BEND |
| Terminal Position | DUAL |
| Number of Terminals | 2 |
| Package Shape | RECTANGULAR |
| Terminal Finish | Matte Tin |
| RoHS 状态 | Compliant |
| Diode Technology | Schottky Barrier (epitaxial construction, oxide passivation, metal overlay contact) |
SRVBS260NT3G 引脚配置
| 引脚 1 | Cathode (K) — Cathode terminal, identified by the polarity band on the SMB case |
| 引脚 2 | Anode (A) — Anode terminal, opposite the cathode band |
典型应用
SRVBS260NT3G 适用于 6 应用s: Low-Voltage DC-DC Converter Output Rectifier, Freewheeling Diode for Inductive Loads, Reverse-Polarity Protection Circuit, OR-ing Diode for Redundant Power Rails, Switching Power Supply Free-Wheel Position, Automotive 12V/24V Bus Clamping and Protection.
Low-Voltage DC-DC Converter Output Rectifier
The SRVBS260NT3G's 0.63 V maximum forward voltage at 2 A and 60 V reverse rating make it well suited as the output rectifier in 3.3 V to 12 V buck-derived DC-DC converter stages. Its Schottky construction eliminates reverse-recovery charge, which is the dominant switching-loss mechanism in converters operating above 100 kHz, allowing designers to push switching frequency higher without efficiency penalty. Placed between the synchronous-rectifier FET and the output inductor in a non-synchronous buck topology, the SRVBS260NT3G carries the inductor ripple current during the FET off-time with minimal conduction loss. The 60 V VRRM provides comfortable margin for 24 V input rails and any transient ringing on the switching node.
推荐
Freewheeling Diode for Inductive Loads
Across relay coils, solenoid valves, and small DC motor windings, the SRVBS260NT3G serves as a freewheeling diode that safely commutates the inductive kickback when the switching element opens. Without this diode, the collapsing magnetic field generates a voltage spike that can destroy the driving FET or transistor. The SRVBS260NT3G's 2 A continuous rating covers most small-signal relays and solenoids, while the 60 V reverse rating handles the typical 20 V to 60 V flyback voltages seen when switching 12 V to 24 V inductive loads. Place the diode as close as possible to the inductive load terminals, oriented with cathode to the positive supply, to minimize the loop area carrying the commutation current.
推荐
Reverse-Polarity Protection Circuit
In battery-powered and DC-input products, the SRVBS260NT3G provides a low-loss reverse-polarity protection block when placed in series with the input supply. At 0.63 V forward drop at 2 A, conduction loss is roughly 1.3 W per protected amp, far less than the 4 W to 6 W dissipated by a P-MOSFET reverse-protection circuit at the same current. The 60 V reverse rating withstands the transient reversal that occurs when a 24 V industrial bus is miswired, while the SMB outline keeps the protection footprint small enough for space-constrained IoT sensor nodes. Combine with an upstream PTC fuse or current-limit resistor for full input protection.
推荐
OR-ing Diode for Redundant Power Rails
In telecom, server, and networking equipment with redundant -48 V or +12 V power feeds, the SRVBS260NT3G functions as an OR-ing diode that isolates the supplies while allowing either feed to power the load. Its low forward drop minimizes the voltage loss between the supply rail and the load, while the 60 V reverse rating tolerates the worst-case differential between two mismatched supplies during switchover. For higher-current applications, parallel multiple SRVBS260NT3G devices with current-sharing resistors; for low-current logic rails, a single device is sufficient. The SMB footprint allows dense placement on the power-entry PCB.
推荐
Switching Power Supply Free-Wheel Position
In flyback and forward converter topologies, the SRVBS260NT3G can serve as the secondary-side freewheeling diode, conducting during the primary switch off-time to deliver current to the output filter. Its fast switching and low Qrr reduce switching losses at 100 kHz to 500 kHz operating frequencies typical of small AC adapters and auxiliary supplies. The 2 A rating suits sub-50 W adapters, and the 60 V rating covers 5 V, 12 V, and 24 V outputs with comfortable margin for leakage-inductance spikes. Place the diode close to the transformer secondary winding to minimize the high-di/dt loop area.
推荐
Automotive 12V/24V Bus Clamping and Protection
For non-safety automotive subsystems such as infotainment, lighting drivers, and body-control modules, the SRVBS260NT3G provides a robust clamping and rectification element on the 12 V or 24 V bus. While the standard SRVBS260NT3G is not AEC-Q101 qualified, the pin-compatible onsemi NRVBS260NT3G in the same SMB package carries the automotive qualification for safety-critical or harsh-vibration applications. The 60 V reverse rating handles load-dump transients up to approximately 35 V when combined with an upstream TVS clamp. Operating temperature range of -55 C to +125 C covers under-hood and cabin-mounted electronic control units.
推荐
推荐产品汇总
工程参考数据： SRVBS260NT3G ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | NRVBS260NT3G | MBRS260T3G | SS26-E3/52T | B260-13-F |
|---|---|---|---|---|---|
| Brand | onsemi | onsemi | onsemi | Vishay Intertechnology | Diodes Incorporated |
| Package | SMB | SMB - same | SMB - same | SMB - same | SMB - same |
| Reverse Voltage (VRRM) | 60 V | 60 V | 60 V | 60 V | 60 V |
| Average Forward Current (IF(AV)) | 2 A | 2 A | 2 A | 2 A | 2 A |
| Forward Voltage (VF max at 2 A) | 0.63 V | 0.63 V | 0.63 V | 0.70 V | 0.70 V |
| Operating Temperature Range | -55 C to +125 C | -55 C to +150 C (AEC-Q101) | -55 C to +125 C | -65 C to +150 C | -65 C to +150 C |
| Automotive Grade (AEC-Q101) | No | Yes | No | Optional (SS26HE3 variant) | No |
| Approx. Unit Price (qty 1000) | $0.14 | $0.18 | $0.13 | $0.16 | $0.12 |
关键差异点
- Lowest forward voltage at 2 A in the SMB Schottky class （对比 B260-13-F)
- Same-brand pin-compatible automotive grade option （对比 NRVBS260NT3G)
- Matte-tin lead-free finish compatible with lead-free reflow （对比 Legacy SnPb-finished SMB rectifiers)
设计说明
Schottky rectifiers exhibit a negative temperature coefficient on forward voltage: VF decreases as junction temperature rises, which can cause current crowding and thermal runaway if the device is mounted on too small a copper land pattern. Estimated: at 2 A continuous forward current with 100 mm^2 of copper per terminal on a 1 oz FR-4 board, the SMB package holds junction temperature approximately 35 C above ambient. For operation near the 2 A rating at high ambient temperatures, use at least 150 mm^2 of copper per terminal or derate to 1.5 A continuous to maintain a 50 C margin below the 125 C maximum junction rating.
Place the SRVBS260NT3G as close as possible to the inductive source (transformer secondary, relay coil, or input connector) to minimize the high-di/dt commutation loop area. Use wide, short traces on both anode and cathode - each at least 2 mm wide or equivalent to 50 mm^2 of copper - to reduce parasitic inductance that can otherwise generate destructive voltage spikes during reverse recovery. For freewheeling applications, route the diode directly across the inductive load terminals with the loop area kept under approximately 100 mm^2 to limit radiated EMI.
Do not exceed the 60 V reverse voltage rating, including transient spikes from inductive loads or switching transients on the converter switching node. Add a small RC snubber (for example, 10 ohm in series with 1 nF) across the diode in high-frequency switching applications where ringing exceeds 40 V peak. Verify the diode's IFSM (surge current) rating against the inrush current of downstream bulk capacitors - the SRVBS260NT3G's 2 A continuous rating does not necessarily imply unlimited surge capability, and exceeding IFSM can cause immediate device failure.
合规信息
Matte-tin lead-free finish per onsemi product page. Standard industrial grade - not AEC-Q101 qualified; choose NRVBS260NT3G for automotive applications. Halogen-free status not explicitly stated in provided data and is marked unknown per data authenticity rules.
