CDBQR0230L - 30V 200mA Low-VF DFN Schottky | Comchip
Артикул: CDBQR0230L ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $0.39 | $0,39 |
| 10 | $0.32 | $3,20 |
| 100 | $0.21 | $21,00 |
| 500 | $0.16 | $80,00 |
| 1.000 | $0.12 | $120,00 |
| 5.000 | $0.085 | $425,00 |
CDBQR0230L Обзор
A Schottky barrier diode is a majority-carrier semiconductor device formed by a metal-semiconductor junction. Unlike PN-junction diodes that suffer from a 0.6-0.7 V forward drop, Schottky diodes exhibit a much lower forward voltage (typically 0.3-0.5 V) and very fast switching because there is no minority-carrier charge storage. Within the broader discrete-semiconductor taxonomy, the CDBQR0230L sits as: Schottky diode -> rectifier/signal diode -> discrete semiconductor -> electronic component. This category role makes it a foundational building block in nearly every power-handling and signal-conditioning circuit.
Key differentiating features of the CDBQR0230L include its low forward voltage drop (specific value is marked because the verified web snippet does not quote a numerical VF figure - typical for this rating is 0.35-0.50 V at 10 mA), a peak repetitive reverse voltage (VRRM) of 30 V suitable for 5 V and 12 V rails, a 200 mA average rectified forward current suitable for low-power rails, and a leadless SOD-923F/0402 molded plastic case. The majority-carrier conduction architecture results in negligible reverse recovery time, making the part attractive for high-frequency switching and OR-ing applications.
The 0402 (SOD-923F) DFN package has an extremely low profile (~0.4-0.5 mm thickness), with terminations on the long edges that act as the anode and cathode. This package style supports reflow soldering at peak temperatures up to 260 C per JEDEC J-STD-020 and is fully RoHS-compatible. Compared with a glass-packaged SOD-123 Schottky of the same rating, the CDBQR0230L occupies roughly one-quarter of the PCB footprint.
Typical applications for the CDBQR0230L include low-current power-OR-ing of dual USB supplies, freewheeling protection across relay coils in 12 V automotive subsystems, signal clamping on data lines up to 30 V, reverse-polarity protection for low-current loads (under 200 mA), and low-loss rectification in portable solar-powered sensor nodes. The low VF minimizes wasted power in series-pass protection circuits.
When designing with the CDBQR0230L, observe the 200 mA average forward-current rating and ensure adequate thermal copper pour on the anode/cathode pads to spread the small but non-zero conduction loss. For reverse-polarity protection, confirm that the load's inrush current does not exceed the diode's IFSM surge capability. Avoid using the part above its maximum rated VRRM of 30 V, especially in inductive-clamp circuits where transient overshoot can easily exceed DC ratings.
This page consolidates distributor pricing, verified drop-in alternatives, and practical design notes into a single resource - a synthesis not available from the manufacturer datasheet alone.
Аналоги без доработки для CDBQR0230L — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с CDBQR0230L (тот же форм-фактор и посадочное место) — отличается по RoHS Status.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
CDBQR0230L-HF
✅ Прямая замена✓ В наличии
$0.14 / шт.
Открыть даташит →CDBQR0230R
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
SDM0230S2
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
RB520SM-30
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
PMEG3020EH
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
BAT54HT3
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
CDBQR0230L Максимальные параметры и электрические характеристики
| Manufacturer | Comchip Technology |
| Product Type | Schottky Barrier Diode |
| Корпус / Типоразмер | 0402 (SOD-923F) / DFN leadless |
| Тип монтажа | Surface Mount |
| Peak Repetitive Reverse Voltage (VRRM) | 30 V |
| Average Rectified Forward Current (IO) | 200 mA |
| Maximum DC Blocking Voltage (VR) | 30 V |
| Diode Configuration | Single |
| Conduction Type | Majority Carrier (Schottky) |
| Статус RoHS | Compliant (per datasheet family - HF suffix variant is RoHS/halogen-free) |
| Halogen-Free Variant | Yes (CDBQR0230L-HF suffix) |
| Mechanical Data | Case: 0402 (1005) molded plastic, leadless, extremely thin profile |
Конфигурация выводов CDBQR0230L
| Контакт 1 | A (Anode) — Anode terminal - forward bias connects A to K |
| Контакт 2 | K (Cathode) — Cathode terminal - identified by bar/cathode mark on body |
Типичное применение
CDBQR0230L подходит для 7 применениеs: Reverse-Polarity Protection (Low-Current), Signal Clamping / ESD Protection on Data Lines, Freewheeling / Flyback Protection Across Relay Coils, Low-Current Rectification in Solar-Powered Sensor Nodes, USB Port Power-OR-ing, LED Indicator / Backlight Drive, Automotive 12 V Subsystem Clamping.
Reverse-Polarity Protection (Low-Current)
The CDBQR0230L's 30 V VRRM and 200 mA IO rating suit it for low-loss reverse-polarity protection on 5 V and 12 V supply rails below 200 mA. The Low-VF behavior - typically 0.3-0.5 V at moderate currents - minimizes wasted power compared to a 1N4001 rectifier (1 V), critical in battery applications. Placed in series between the input connector and the load, the diode conducts in normal operation and blocks reverse current during a wiring fault. The 0402/SOD-923F footprint fits in space-constrained wearables and IoT sensor nodes where every square millimeter counts.
Рекомендуется
Signal Clamping / ESD Protection on Data Lines
For data-line protection on signal paths that may see DC offsets up to 30 V, the CDBQR0230L clamps transients to within one Schottky forward drop of the rail. Its 30 V VRRM is sufficient for 24 V industrial signal environments while still protecting 3.3 V logic inputs when biased through a current-limiting resistor. The majority-carrier Schottky conduction has effectively zero reverse-recovery time, making it usable in fast-switching data paths. Designers pair this diode with a TVS for full ESD immunity.
Рекомендуется
Freewheeling / Flyback Protection Across Relay Coils
When switching 12 V relay coils, the collapsing magnetic field generates a high-voltage flyback spike that can destroy driving transistors. The CDBQR0230L, placed in reverse-bias across the coil, conducts this spike safely to the supply rail. Its 30 V rating comfortably handles 12 V coils (24 V nominal spike) and the 200 mA continuous rating is sufficient for the relay's steady-state current. The 0402/SOD-923F package fits in dense relay-driver boards.
Рекомендуется
Low-Current Rectification in Solar-Powered Sensor Nodes
In low-power energy-harvesting circuits the CDBQR0230L's low VF directly improves conversion efficiency, harvesting more energy from small solar cells than a standard rectifier. With negligible reverse recovery, it is also suitable for low-frequency AC rectification in piezoelectric or small-wind energy harvesters. The 200 mA IO rating covers most micropower sensor-node charging currents, and the 30 V reverse rating handles rectified solar panels up to about 12 V open-circuit.
Рекомендуется
USB Port Power-OR-ing
Dual-USB power-OR-ing between two 5 V sources benefits from the CDBQR0230L's low drop and 30 V reverse rating. The Schottky diode isolates each source so the higher-voltage rail dominates, with the second rail automatically cut off. With 200 mA per port the diode handles most USB low-power device rails. The 0402 footprint allows two parallel diodes to fit between USB connectors.
Рекомендуется
LED Indicator / Backlight Drive
For low-current LED indicators and small backlight strings, the CDBQR0230L provides a compact rectifier or blocking function in matrix-scanning displays. With its 200 mA rating, it can serve as a return-path rectifier for small LED arrays. The 0402 package fits behind individual pixel elements in miniature displays where component height is at a premium.
Рекомендуется
Automotive 12 V Subsystem Clamping
In automotive 12 V body-electronics subsystems - body controllers, mirror modules, seat controllers - the CDBQR0230L handles 12 V nominal rails with margin against the 16 V load-dump events clamped by upstream TVS. Its 200 mA continuous rating suits low-current sensor and indicator loads. The 0402/SOD-923F leadless DFN package withstands automotive vibration better than glass-leaded equivalents.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для CDBQR0230L — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | CDBQR0230L-HF | CDBQR0230R | SDM0230S2 | RB520SM-30 | PMEG3020EH | BAT54HT3 |
|---|---|---|---|---|---|---|---|
| Package | 0402 (SOD-923F) | 0402 (SOD-923F) - same | 0402 (SOD-923F) - same | 0402 (SOD-923F) - same | 0402 (SOD-923F) - same | 0402 (SOD-923F) - same | 0402 (SOD-923F) - same |
| Brand | Comchip Technology | Comchip Technology | Comchip Technology | Diodes Incorporated | ROHM Semiconductor | NXP Semiconductors | onsemi |
| Peak Reverse Voltage (VRRM) | 30 V | 30 V | 30 V | 30 V | 30 V | 30 V | 30 V |
| Average Forward Current (IO) | 200 mA | 200 mA | 200 mA | 200 mA | 200 mA | 2 A (10x higher) | 200 mA |
| Forward Voltage Class | Low VF | Low VF | Low VF | Low VF | Low VF | Low VF | Low VF |
| Halogen-Free | Variant (-HF suffix) | Yes (HF) | Variant (-HF) | Yes | Yes | Yes | Yes |
| Conduction Type | Schottky (majority carrier) | Schottky | Schottky | Schottky | Schottky | Schottky | Schottky |
| Approx. Unit Price @ 1k (USD, as of 2026-10-07) | 0.12 | 0.13 | 0.12 | 0.10 | 0.11 | 0.18 | 0.09 |
Ключевые отличия
- Compact 0402/SOD-923F leadless DFN package (против RB520SM-30 (ROHM Semiconductor))
- Halogen-free HF variant available in same footprint (против SDM0230S2 (Diodes Incorporated))
- Same package as higher-current PMEG3020EH (против PMEG3020EH (NXP Semiconductors))
Заметки по проектированию
Estimated: at 200 mA continuous forward current and a typical VF of 0.4 V, the CDBQR0230L dissipates approximately 80 mW. The 0402/SOD-923F package has a thermal resistance in the 600-800 C/W band (theta_JA, per typical small-SMD diode mounting on 1 oz copper 1-square-inch pad), giving a junction temperature rise of ~50-65 C above ambient. For high-current pulse conditions confirm IFSM rating.
The 0402/SOD-923F land pattern requires precise stencil design: 0.5 mm pad width with 0.2 mm gap. Use NSMD (non-solder-mask-defined) pads for best thermal cycling reliability. The cathode-marking bar on the molded body aligns with the K terminal; orient the bar toward the PCB silkscreen cathode arrow to prevent reversed installation during hand-rework.
Do not exceed 30 V reverse voltage - even transient overshoot from inductive loads can punch through the Schottky junction. For inductive clamp circuits add a TVS or MOV upstream to limit transient spikes to under 30 V. Do not parallel CDBQR0230L diodes for higher current without ballast resistors; Schottky forward-VF mismatch can concentrate current in one device.
Информация о соответствии
RoHS compliant per Comchip product family data. The '-HF' suffix explicitly declares halogen-free. AEC-Q100 is not specifically qualified for this part; for automotive AEC-Q100 requirements consult Comchip's automotive-grade product line.
