SMBJ5.0AHE3_A/H - 600W 5V TVS Diode SMB AEC-Q101 | Vishay
料号： SMBJ5.0AHE3_A/H ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.4488 | $0.45 |
| 10 | $0.38192 | $3.82 |
| 100 | $0.26576 | $26.58 |
| 500 | $0.22 | $110.00 |
| 1,000 | $0.18 | $180.00 |
SMBJ5.0AHE3_A/H 概述
A TVS diode is a silicon avalanche-type overvoltage protection device placed across sensitive circuit nodes to clamp fast voltage transients, such as electrostatic discharge (ESD), inductive load switching spikes, and induced lightning surges. Within the power-protection hierarchy, TVS diodes sit alongside varistors and gas discharge tubes, but offer the fastest response time (sub-nanosecond avalanche action) and the tightest clamping, making them the preferred choice for low-voltage semiconductor protection.
Key features of this HE3-grade part include a 600 W peak pulse power rating (10/1000 us waveform per the SMBJ family datasheet), a very tight breakdown voltage tolerance of 5 percent (the HE suffix series), AEC-Q101 automotive qualification for high-reliability designs, and an extended operating junction temperature range suited to demanding environments. The unidirectional polarity provides a low forward diode drop for negative-going transients.
Technically, the device exploits a controlled silicon avalanche junction: the 5.0 V working peak reverse voltage (VRWM) ensures it stays non-conducting during normal 5 V rail operation, while breakdown occurs between the min/max breakdown window when a transient arrives, diverting up to 65.2 A of surge current to ground and holding the clamped node below 9.2 V.
Typical applications include protection of 5 V logic rails, USB power lines, sensor signal lines, automotive module inputs, and industrial IO ports exposed to inductive switching or surge events.
Design consideration: at 5 V standoff, PCB creepage and trace current-carrying capability for surge currents of tens of amps must be verified, and the TVS should be placed close to the connector with a low-inductance ground return.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替换替代料： SMBJ5.0AHE3_A/H ——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： SMBJ5.0AHE3_A/H （相同外形与封装尺寸） ——差异在于 Package, Peak Pulse Current (IPP), Series, RoHS Status, Reverse Standoff Voltage (VRWM).
快速对比工具——选择替代料号进行并排对比：
SMBJ5.0AHE3_B/H
✅ 直接替换📋 参考替代料（不在目录中）
SMBJ5.0A
✅ 直接替换✓ 有现货
$0.024 / 个
查看数据手册 →SMBJ5.0A-E3/52
✅ 直接替换✓ 有现货
$0.07 / 个
查看数据手册 →SMBJ5.0A-13-F
✅ 直接替换✓ 有现货
$0.05 / 个
查看数据手册 →SMBJ5.0A-F1-0000HF
✅ 直接替换✓ 有现货
$0.038 / 个
查看数据手册 →SMBJ5.0AHE3_A/H 最大额定值与电气特性
| Peak Pulse Power Dissipation | 600 W (10/1000 us) |
| Reverse Standoff Voltage (VRWM) | 5.0 V |
| Breakdown Voltage Tolerance | 5 percent (HE series tight tolerance) |
| Maximum Clamping Voltage (VC) | 9.2 V |
| Peak Pulse Current (IPP) | 65.2 A |
| Polarity | Unidirectional |
| 封装 | SMB (DO-214AA) |
| 安装类型 | Surface Mount |
| Qualification | AEC-Q101 (Automotive) |
| 分类 | TVS Diode / ESD Protection |
| Series | SMBJ5.0A thru SMBJ188A (TransZorb) |
| Response Time | < 1.0 ps (unidirectional, per SMBJ family datasheet) |
| Packaging | Tape and Reel (T/R) |
| RoHS 状态 | RoHS compliant |
| UL Recognition | UL 497B recognized protectors (file E136766, per datasheet) |
SMBJ5.0AHE3_A/H 引脚配置
| 引脚 1 | Cathode — Cathode terminal (band-marked); connect to protected 5 V rail |
| 引脚 2 | Anode — Anode terminal; connect to ground |
典型应用
SMBJ5.0AHE3_A/H 适用于 6 应用s: 5 V Logic Rail and MCU Protection, USB Port and Consumer Electronics Protection, Automotive Module Input Protection, Industrial Sensor and IO Signal Lines, Telecom and Networking Equipment Protection, Battery-Powered and Portable Device Charging Inputs.
5 V Logic Rail and MCU Protection
The SMBJ5.0AHE3_A/H is placed directly across 5 V microcontroller and logic supply rails where its 5.0 V reverse standoff voltage keeps it non-conducting during normal operation, while the 9.2 V maximum clamp and 65.2 A surge capability absorb events from inductive load switching or coupled surges. The tight 5 percent breakdown tolerance of the HE3 grade ensures predictable clamping start across production units. Mounted close to the protected IC with short, wide traces and a low-inductance ground return, the diode diverts transient energy before it can exceed the absolute maximum ratings of 5 V-tolerant MCUs, memories, and logic devices, and its AEC-Q101 grade supports long-life industrial and automotive controllers.
推荐
USB Port and Consumer Electronics Protection
USB VBUS lines operating at 5 V are a natural fit for the SMBJ5.0AHE3_A/H: the standoff voltage matches the nominal bus, and the 600 W peak pulse rating handles ESD strikes and hot-plug cable transients that would otherwise damage host controllers and hubs. Because the device responds with sub-nanosecond avalanche action per the Vishay SMBJ datasheet, it clamps the leading edge of an ESD event without the slow turn-on of varistors. Place the TVS at the connector side with a solid ground plane to minimize loop inductance. The SMB (DO-214AA) package is low profile and automation-friendly, ideal for high-volume consumer PCB assembly, and LCSC and Fly-Wing stock supports volume sourcing.
推荐
Automotive Module Input Protection
With AEC-Q101 qualification confirmed by the Arrow product listing, the SMBJ5.0AHE3_A/H protects 5 V sensor and communication inputs in automotive electronic control modules exposed to load-dump-adjacent transients, inductive actuator switching, and cable-coupled surges. The HE3 high-temperature grade extends operational capability in under-hood and engine-bay environments. On a module power or signal entry, the TVS works with upstream series resistance or a relay/fuse to absorb surge energy, clamping to 9.2 V maximum at 65.2 A. Designers should verify cumulative surge energy against the 600 W 10/1000 us rating and account for derating at elevated ambient temperature per the Vishay datasheet power derating curve.
推荐
Industrial Sensor and IO Signal Lines
Industrial environments impose inductive switching transients from contactors, solenoids, and motor wiring on long sensor and IO lines. The Vishay SMBJ datasheet explicitly targets protection of signal lines of sensor units for consumer, computer, industrial, and telecommunication equipment. The SMBJ5.0AHE3_A/H clamps these surges at its 9.2 V ceiling, protecting 5 V signaling front-ends, isolated transceiver secondaries, and ADC inputs. The 65.2 A peak pulse capability handles multi-kilowatt-class microsecond transients, and the unidirectional polarity also clips negative line noise via forward conduction at roughly 3.5 V. Position the TVS at the terminal block entry and keep the surge return path wide and direct on the PCB.
推荐
Telecom and Networking Equipment Protection
Telecom line cards, routers, and switches run 5 V rails feeding PHYs and controllers that are vulnerable to surges induced on long cables and backplanes. The SMBJ5.0AHE3_A/H offers sub-picosecond-class response for unidirectional devices per the Vishay SMBJ family datasheet, clamping fast transients before PHY absolute maxima are exceeded. UL 497B recognition of the SMBJ family under file E136766 (noted in the datasheet) supports its use in protector-classified telecom equipment. With 600 W surge capability and the automated-placement-friendly SMB package, it integrates into dense port-protection arrays; the tight 5 percent VBR tolerance keeps clamping thresholds consistent across thousands of ports in production.
推荐
Battery-Powered and Portable Device Charging Inputs
Charger inputs of portable and battery-powered devices see transient events from adapter hot-plug, cable inductance, and fault conditions on 5 V USB power sources. The SMBJ5.0AHE3_A/H, with its exact 5.0 V standoff and 9.2 V clamp, protects charger IC inputs and battery-management front ends while remaining invisible during normal charging operation. Its 600 W pulse rating absorbs adapter misbehavior transients, and the unidirectional topology naturally clamps negative spikes (reverse adapter insertion noise) at the low forward drop. The low-profile SMB (DO-214AA) package suits space-constrained handheld layouts, and wide distributor stock (15,000+ units at Fly-Wing, LCSC in stock) secures supply for high-volume portable products.
推荐
推荐产品汇总
工程参考数据： SMBJ5.0AHE3_A/H ——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 | SMBJ5.0AHE3_B/H | SMBJ5.0A-13-F | SMBJ5.0A (Littelfuse) | SMBJ5.0A (Bourns) |
|---|---|---|---|---|---|
| Package | SMB (DO-214AA) | SMB (DO-214AA) - same | SMB (DO-214AA) - same | SMB (DO-214AA) - same | SMB (DO-214AA) - same |
| Brand | Vishay General Semiconductor | Vishay General Semiconductor | Diodes Incorporated | Littelfuse | Bourns |
| Peak Pulse Power | 600 W | 600 W | 600 W | 600 W | 600 W |
| Reverse Standoff Voltage | 5.0 V | 5.0 V | 5.0 V | 5.0 V | 5.0 V |
| Max Clamping Voltage | 9.2 V | 9.2 V | 9.2 V | 9.2 V | 9.2 V |
| Peak Pulse Current | 65.2 A | 65.2 A | 65.2 A | 65.2 A | 65.2 A |
关键差异点
- AEC-Q101 automotive qualification （对比 SMBJ5.0A (Littelfuse))
- Tight 5 percent breakdown voltage tolerance （对比 SMBJ5.0A (Vishay standard))
- Extended high-temperature grade (HE3) （对比 SMBJ5.0A-13-F)
设计说明
Surge current path inductance dominates real-world clamping performance. Place the SMBJ5.0AHE3_A/H within a few millimeters of the connector or protected node, use wide (at least 2 mm) traces rated for 65 A peak pulse current, and return surge current to ground through a via cluster or dedicated ground plane rather than a single thin trace. Estimated: even 10 nH of loop inductance adds about 6.5 V of overshoot at a 65 A, 1 us/s slew surge (V = L di/dt), potentially doubling the effective clamp voltage seen by the IC.
The 600 W rating applies to the 10/1000 us exponential pulse on an adequate PCB copper area per the Vishay SMBJ datasheet. For repetitive or long transients, apply the datasheet power derating curve against ambient temperature and verify the SMB pad connects to sufficient copper (typically a square inch or more of 1 oz copper for sustained stress). Estimated: repeated 600 W, 1 ms events require checking the average power duty cycle so junction temperature stays within the extended HE3-grade temperature range.
Do not use this part on rails above 5.0 V nominal: leakage current rises sharply near the minimum breakdown voltage, and standby leakage can erode battery life. If clamping behavior must be tightly controlled across temperature and production spread, the HE 5 percent tolerance grade is an advantage over standard SMBJ5.0A parts, but confirm the substitute's tolerance grade in cross-brand designs. Also confirm the cathode band orientation: a reversed unidirectional TVS conducts continuously through the forward diode and shorts the rail.
合规信息
RoHS compliant per Fly-Wing and Mouser listings. AEC-Q101 qualified per Arrow.com listing (automotive discrete qualification; AEC-Q101 applies to discrete semiconductors rather than AEC-Q100). UL 497B recognition noted in Vishay SMBJ datasheet under file E136766.
