NTSB40100CTT4G - 40A 100V Trench Schottky Rectifier D2PAK | onsemi
부품 번호: NTSB40100CTT4G ✗ 단종| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.62 | $16.20 |
| 100 | $1.28 | $128.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.88 | $880.00 |
NTSB40100CTT4G 개요
A Schottky rectifier is a semiconductor diode built around a metal-semiconductor junction rather than a P-N junction, producing a lower forward voltage drop (typically 0.3-0.6 V) and faster switching than standard PN-junction rectifiers. Trench-based Schottky designs further reduce leakage current and thermal resistance. Within the broader taxonomy, the NTSB40100CTT4G sits in: Schottky diode -> rectifier diode -> discrete semiconductor -> power semiconductor. Its primary system role is AC-to-DC rectification, freewheeling, and reverse-polarity protection in switch-mode power supplies, motor drives, and DC-DC converters where efficiency and thermal performance are critical.
Key specifications include a 100 V DC blocking voltage, 40 A maximum forward current, very low forward voltage, and dual-diode common-cathode topology that simplifies PCB layout by providing both half-bridge legs in one package. The trench Schottky architecture delivers lower power dissipation and cooler operation compared with planar Schottky diodes, helping designs meet energy-efficiency regulatory requirements. The TO-263AB (D2PAK) surface-mount package exposes the metal tab for direct PCB heatsinking, supporting high-current operation without external heatsinks in moderate-power applications.
Typical applications include server and telecom switch-mode power supply output rectification, freewheeling diodes in motor control and solenoid drive circuits, OR-ing and reverse-polarity protection in battery-powered systems, and DC-DC converter rectifier stages. Designers select this part when they need a dual-diode 100 V rectifier in a compact SMD footprint that can be assembled with standard reflow soldering.
When designing with the NTSB40100CTT4G, calculate steady-state power dissipation as P = VF x IF per diode and ensure the PCB copper pad area is sufficient to keep the junction temperature below the maximum rating. The exposed tab must be soldered to a copper pour of at least 1 square inch for the rated current; smaller pads will derate the part significantly. Per the onsemi datasheet, the device is rated for 20 A continuous per leg at 25 C with adequate heatsinking.
This page synthesizes distributor pricing, drop-in alternatives, and practical thermal design notes that go beyond the manufacturer datasheet to accelerate your BOM selection and PCB layout review.
드롭인 대체품: NTSB40100CTT4G — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
MBRB41H100CTT4G
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
NTSB40100CTG
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
NTSB40100CT-1G
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
NTSB40100CTT4G 최대 정격 & 전기적 특성
| Diode Type | Schottky |
| Configuration | 1 Pair Common Cathode |
| Reverse Voltage (Vrrm) | 100 V |
| Average Forward Current (IF(AV)) | 20 A per leg (40 A per device) |
| Technology | Trench-based Schottky |
| 패키지 | TO-263-3, D2PAK (2 Leads + Tab), TO-263AB |
| 실장 유형 | Surface Mount |
| Packaging | Tape & Reel (T4) |
| Lead Free | Yes |
| RoHS 상태 | Compliant |
| 핀 수 | 3 (2 leads + tab) |
NTSB40100CTT4G 핀 구성
| 핀 1 | Anode 1 — First diode anode (forward current input) |
| 핀 2 | Anode 2 — Second diode anode (forward current input) |
| 핀 3 | Cathode (Tab) — Common cathode and thermal tab (exposed pad, must be soldered to PCB copper for heatsinking) |
일반적인 애플리케이션
NTSB40100CTT4G 적합 용도: 6 애플리케이션s: Switch-Mode Power Supply Output Rectification, Freewheeling Diode in Motor Drives, Reverse-Polarity Protection, OR-ing Diodes in Redundant Power Systems, DC-DC Converter Rectifier Stage, Solar Power and Renewable Energy Systems.
Switch-Mode Power Supply Output Rectification
The NTSB40100CTT4G serves as the secondary-side output rectifier in isolated AC-DC and DC-DC converters where its 100 V reverse rating and 20 A per-leg current make it suitable for 24 V and 48 V rails. The trench Schottky architecture delivers very low forward voltage drop, reducing conduction losses and improving overall converter efficiency, often by 1-3 percentage points compared with planar Schottky diodes at the same current. The common-cathode dual configuration simplifies PCB routing for center-tapped transformer secondaries, and the TO-263AB exposed tab provides direct heatsinking through PCB copper for continuous operation at rated current.
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Freewheeling Diode in Motor Drives
In brushed DC motor and solenoid driver circuits, the NTSB40100CTT4G functions as a freewheeling (flyback) diode to protect switching transistors from inductive kickback when the load is de-energized. Its fast switching speed and low forward voltage minimize voltage transients across the switching device, reducing stress and improving reliability. The dual common-cathode package is particularly useful in H-bridge motor drivers where both low-side freewheeling paths can share the same thermal tab, halving the PCB footprint versus discrete single-diode solutions.
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Reverse-Polarity Protection
The NTSB40100CTT4G provides robust reverse-polarity protection in 24 V and 48 V battery-powered systems, where a single diode in series with the supply rail prevents damage from accidental reverse battery connection. Its 100 V reverse voltage rating offers substantial headroom over typical 24-48 V nominal rails, and the low forward voltage keeps power dissipation manageable at high currents. The D2PAK package handles the continuous load current with appropriate PCB copper area, replacing larger through-hole solutions with a compact surface-mount footprint suitable for space-constrained designs.
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OR-ing Diodes in Redundant Power Systems
In redundant server and telecom power architectures, the NTSB40100CTT4G operates as an OR-ing diode to combine outputs from multiple power supplies while preventing backfeed between sources. Its low forward voltage minimizes voltage drop and power dissipation at the 20 A currents typical of server rails, helping maintain efficiency. The dual-diode configuration allows a single package to handle two parallel OR-ing paths, reducing component count and PCB area versus discrete single-diode designs.
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DC-DC Converter Rectifier Stage
The NTSB40100CTT4G functions as the rectifier in non-synchronous buck or boost converters where its low forward voltage drop directly impacts efficiency. The trench Schottky technology reduces switching losses compared with PN-junction rectifiers, while the 100 V rating provides ample margin for 48 V input bus applications. The TO-263AB package supports the high currents typical of industrial and telecom DC-DC stages, and the exposed tab enables direct PCB heatsinking without external thermal management hardware.
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Solar Power and Renewable Energy Systems
In photovoltaic charge controllers and renewable energy power conditioning, the NTSB40100CTT4G blocks reverse current flow from the battery back to the solar panel at night, preventing energy loss and battery discharge. Its 100 V reverse rating comfortably handles 24 V and 48 V battery systems with surge margin, while the trench Schottky construction keeps forward drop low to maximize energy harvest. The dual common-cathode configuration supports blocking diodes on both positive and negative legs of bipolar PV arrays in a single compact package.
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추천 제품 요약
엔지니어링 참조 데이터: NTSB40100CTT4G — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | MBRB41H100CTT4G | NTSB40100CTG | NTSB40100CT-1G |
|---|---|---|---|---|
| Package | TO-263AB (D2PAK) | TO-263AB (D2PAK) - same | TO-263AB (D2PAK) - same | TO-263AB (D2PAK) - same |
| Brand | onsemi | onsemi | onsemi | onsemi |
| Reverse Voltage (Vrrm) | 100 V | 100 V | 100 V | 100 V |
| Forward Current (IF) | 20 A per leg / 40 A total | 20 A per leg / 40 A total | 20 A per leg / 40 A total | 20 A per leg / 40 A total |
| Configuration | Dual Common Cathode | Dual Common Cathode | Dual Common Cathode | Dual Common Cathode |
| Technology | Trench Schottky | Planar Schottky | Trench Schottky | Trench Schottky |
| Lifecycle Status | Obsolete | Active | Obsolete | Obsolete |
| Packaging Format | Tape & Reel (T4) | Tape & Reel (T4) | Tube (bulk) | Tape & Reel (-1) |
주요 차별점
- Trench-based Schottky technology reduces forward voltage and leakage (vs Planar Schottky competitors at same rating)
- Dual common-cathode configuration saves PCB area (vs Two discrete single-diode D2PAK parts)
- Direct onsemi parametric equivalent available (vs Cross-brand alternates (Vishay, ST, Diodes Inc))
설계 노트
The TO-263AB (D2PAK) package dissipates heat primarily through the exposed metal tab to the PCB copper pour. Per onsemi guidance, a minimum of 1 square inch of 2 oz copper on the tab pad is required to achieve the rated 20 A continuous current per leg at 25 C ambient. Estimated: at 0.5 V forward drop and 20 A load, each diode dissipates ~10 W, so 2 oz copper with adequate airflow is essential to keep junction temperature below 125 C. For higher currents, add thermal vias under the tab to inner copper planes.
Route the anode traces with sufficient copper width to carry the rated current without significant voltage drop - for 20 A, a 100 mil (2.5 mm) wide 2 oz copper trace is recommended as a starting point. Keep the loop area between each diode anode and the common cathode tab as small as possible to minimize parasitic inductance, which is critical in switching applications where reverse recovery transients can cause ringing. Place the diode close to the switching node it is rectifying or protecting.
Do not exceed the 100 V reverse voltage rating, including transient spikes from inductive loads - add an RC snubber or TVS clamp if the switching environment produces voltage transients above 80% of Vrrm. Verify that the common-cathode tab is properly connected to the circuit ground/return plane; an open or high-impedance tab connection will cause the diodes to overheat and fail. For dual-diode configurations, ensure both diodes share the load appropriately to avoid uneven thermal stress.
규정 준수 정보
RoHS compliant and lead-free per onsemi product declaration. Not AEC-Q100 qualified (automotive grade not applicable for this discrete rectifier). Halogen-free status not explicitly confirmed in provided data.
