ESH2D-E3/5BT - 200V 2A Ultrafast Rectifier | Vishay SMB
부품 번호: ESH2D-E3/5BT ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $0.4 | $0.40 |
| 10 | $0.34 | $3.40 |
| 100 | $0.25 | $25.00 |
| 500 | $0.2 | $100.00 |
| 1,000 | $0.16 | $160.00 |
ESH2D-E3/5BT 개요
An ultrafast rectifier is a discrete semiconductor that converts alternating current (AC) to direct current (DC) while switching between conducting and blocking states in tens of nanoseconds. Within the broader device taxonomy, an ultrafast rectifier belongs to the rectifier diode family, which sits under discrete semiconductors, power diodes, and switching diodes. Compared with standard recovery rectifiers (trr of several microseconds) and Schottky rectifiers (no reverse recovery but limited to lower voltages), ultrafast rectifiers balance voltage headroom with switching speed, enabling their use as freewheeling and output rectifiers in switch-mode power supplies.
Key features include a peak forward surge current capability that supports transient load events, a low forward voltage drop that minimizes conduction loss, and a glass-passivated die that improves moisture resistance and long-term reliability. The SMB (DO-214AA) outline provides a robust mechanical platform with standardized land patterns and is compatible with high-volume reflow soldering.
Typical applications include freewheeling diodes across inductive loads, output rectifiers in AC-DC and DC-DC converters, polarity protection, and high-frequency inverter circuits. The 200 V reverse rating comfortably covers 120 V AC rectified rails and 100 V DC bus systems.
When designing with this part, derate the forward current for temperatures above 75 C using the published derating curve and provide adequate thermal copper on the SMB land pad. The supplied cathode band on the package marks polarity, and standard JEDEC DO-214AA footprints are interchangeable with most 2 A ultrafast rectifier families.
드롭인 대체품: ESH2D-E3/5BT — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
ESH2D-E3/52T
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ESH2C-E3/5BT
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ESH2B-E3/5BT
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ES2D-E3/52T
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MURS120T3G
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ES2D
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ESH2D-E3/5BT 최대 정격 & 전기적 특성
| Diode Type | Standard Recovery Rectifier |
| 패키지 | DO-214AA (SMB) |
| Reverse Voltage (Vr) Max | 200 V |
| Average Rectified Forward Current (Io) | 2.0 A |
| Forward Voltage (Vf) Max at If=2A | 930 mV |
| Reverse Recovery Time (trr) Typical | 25 ns |
| Reverse Recovery Time (trr) Max | 35 ns |
| Peak Forward Surge Current (IFSM) | 50 A (per datasheet) |
| 동작 온도 범위 | -55 C to +150 C |
| 실장 유형 | Surface Mount |
| MSL 레벨 | MSL 1 per J-STD-020C |
| Lead-Free / RoHS | Yes / Compliant |
| Chip Construction | Glass-passivated junction |
ESH2D-E3/5BT 핀 구성
| 핀 1 | K (Cathode) — Cathode - marked by band on package body |
| 핀 2 | A (Anode) — Anode - opposite the cathode band |
일반적인 애플리케이션
ESH2D-E3/5BT 적합 용도: 7 애플리케이션s: AC-DC Bridge Rectifier Output Stage, Freewheeling Diode for Buck/Boost Converters, Switch-Mode Power Supply Output Rectifier, Inverter and Motor Drive Snubber, Polarity Protection and Reverse-Battery Blocking, LED Lighting Driver Output Rectifier, Telecom and Networking Power Conversion.
AC-DC Bridge Rectifier Output Stage
The ESH2D-E3/5BT is well suited as the secondary-side rectifier in 120 V AC line-powered converters where the rectified rail rises to approximately 170 V DC. Its 200 V reverse rating provides a 30 V safety margin above the peak rectified line, and the 25 ns trr keeps switching loss low in continuous-conduction CCM PFC and forward converters. Place the cathode band toward the DC bus and provide 100 sq mm of SMB land copper to dissipate the I²R loss; typical dissipation at 2 A and 0.93 V Vf is roughly 1.86 W, manageable without an external heatsink.
추천
Freewheeling Diode for Buck/Boost Converters
Use the ESH2D-E3/5BT as the freewheeling diode across the inductor in synchronous-rectified buck or boost stages where the switch node swings above 100 V. The 25 ns reverse recovery ensures the diode stops conducting before the high-side MOSFET turns on, preventing shoot-through current spikes that degrade efficiency and stress the switch. Its 2 A rating comfortably covers most 36 V to 72 V telecom bus converters, and the SMB package fits standard 2 A power land patterns without PCB rework.
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Switch-Mode Power Supply Output Rectifier
The ESH2D-E3/5BT is ideal as the secondary-side output rectifier in isolated flyback or forward converters operating at 100 kHz to 250 kHz, where its 25 ns trr minimizes switching loss compared with 500 ns standard rectifiers. At 2 A and 930 mV Vf the conduction loss is approximately 1.86 W, and the SMB package couples to a 1 oz copper land for thermal relief. Designers can parallel two ESH2D-E3/5BT parts to halve conduction loss in 3 A to 4 A output rails, sharing the same land pattern without board changes.
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Inverter and Motor Drive Snubber
In low-power inverter and motor drive stages with bus voltages up to 170 V DC, the ESH2D-E3/5BT serves as a robust snubber rectifier that recovers inductive kickback from relay coils, motor windings, and solenoid valves. Its 50 A peak forward surge rating handles the brief inrush events that occur at turn-off, and the 25 ns trr ensures clean commutation without oscillations. SMB mounting on the driver board keeps the layout compact and the loop inductance low.
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Polarity Protection and Reverse-Battery Blocking
Deploy the ESH2D-E3/5BT in series with the input rail of portable or industrial equipment to block reverse-battery connection events. The 200 V reverse standoff protects downstream 24 V or 48 V DC rails from miswired power sources, and the 930 mV forward drop is acceptable in non-efficiency-critical protection paths. The SMB package simplifies integration into handheld device PCBs where size and reliability outweigh the small conduction loss.
추천
LED Lighting Driver Output Rectifier
In offline LED driver designs using flyback topology at 100 kHz to 200 kHz, the ESH2D-E3/5BT acts as the secondary-side rectifier that delivers pulsed DC to the LED string. The 25 ns trr and 2 A forward current support LED strings up to 1 A continuous with proper thermal design, and the SMB footprint fits inside the compact driver enclosure. Its glass-passivated die ensures long-term reliability under the elevated ambient temperatures typical of enclosed luminaires.
추천
Telecom and Networking Power Conversion
The ESH2D-E3/5BT suits telecom and networking hardware where 48 V to 56 V DC distribution must be stepped down via isolated converters. Its 200 V reverse voltage comfortably exceeds the rectified telecom bus, and the 25 ns trr maintains efficiency at the high switching frequencies used to minimize transformer size. SMB packaging enables high-density front-end power modules where board real estate is at a premium.
추천
추천 제품 요약
엔지니어링 참조 데이터: ESH2D-E3/5BT — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | ESH2D-E3/52T | ESH2C-E3/5BT | ESH2B-E3/5BT | ES2D-E3/52T | MURS120T3G | ES2D |
|---|---|---|---|---|---|---|---|
| Package | DO-214AA (SMB) | DO-214AA (SMB) | DO-214AA (SMB) | DO-214AA (SMB) | DO-214AA (SMB) | DO-214AA (SMB) | DO-214AA (SMB) |
| Brand | Vishay | Vishay | Vishay | Vishay | Vishay | onsemi | Fairchild Semiconductor |
| Reverse Voltage (Vr) Max | 200 V | 200 V | 150 V | 100 V | 200 V | 200 V | 200 V |
| Average Forward Current (Io) | 2.0 A | 2.0 A | 2.0 A | 2.0 A | 2.0 A | 2.0 A | 2.0 A |
| Reverse Recovery Time (trr) Typical | 25 ns | 25 ns | 25 ns | 25 ns | 30 ns | 35 ns | 20 ns |
| MSL Level | MSL 1 | MSL 1 | MSL 1 | MSL 1 | MSL 1 | MSL 1 | MSL 1 |
| RoHS Compliant | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
주요 차별점
- Ultrafast 25 ns trr enables operation above 200 kHz (vs MURS120T3G)
- 200 V rating with same SMB footprint (vs ESH2C-E3/5BT)
- Lower forward drop than Schottky at high voltage (vs STPS20120CR)
설계 노트
At 2 A continuous forward current and 930 mV Vf, the steady-state conduction loss is approximately 1.86 W. The SMB package requires the standard JEDEC land pattern with at least 100 sq mm of 1 oz copper on the cathode pad to keep the junction-to-ambient thermal resistance within the datasheet limit. Estimated: using a 100 sq mm copper pour and still air, the temperature rise is roughly 60-80 C above ambient; for higher currents, derate per the published curve above 75 C.
Minimize the loop area between the ESH2D-E3/5BT cathode, the decoupling capacitor, and the switching node to reduce reverse-recovery-induced ringing. Keep the rectifier within 5 mm of the MOSFET or transformer secondary, and use wide traces or a copper pour to carry the 2 A forward current. A small RC snubber (10 ohm + 1 nF) across the diode suppresses high-frequency oscillations in CCM converters above 200 kHz.
Do not substitute a standard recovery rectifier (e.g., 1N5402) for the ESH2D-E3/5BT in switch-mode designs; standard recovery parts have trr in the microsecond range and dissipate excessive switching loss above 50 kHz. Verify the diode's reverse voltage rating exceeds the peak rectified line plus transients; the 200 V ESH2D-E3/5BT must not be used on 220 V AC rectified rails where the peak approaches 311 V. Confirm the cathode band orientation before reflow to avoid reverse-polarity failures.
규정 준수 정보
RoHS compliant per Vishay product page. MSL 1 per J-STD-020C. Not AEC-Q100 qualified - this is a commercial-grade rectifier. Halogen-free and lead-free confirmed by Vishay datasheet.
