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Vishay General Semiconductor - Diodes Division SMBJ54AHE3_A/H
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- Part No.:
- SMBJ54AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ54AHE3_A/H.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,207
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Product details
Overview
SMBJ54AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 54 V standoff voltage (VWM), 60.0–66.3 V breakdown voltage (VBR) at 1 mA, 6.9 A peak pulse current (IPPM) under 10/1000 µs waveform, and 600 W peak pulse power dissipation - deployed to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ54AHE3_A/H datasheet, SMBJ54AHE3_A/H pinout, SMBJ54AHE3_A/H application, or SMBJ54AHE3_A/H equivalent, key selection criteria include clamping voltage (87.1 V at IPPM), low incremental surge resistance, AEC-Q101 qualification status, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its VBR threshold. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ps), while the cathode-band polarity marking enables correct PCB orientation during assembly.
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead). It meets MSL Level 1 per J-STD-020 and supports lead-free reflow up to 260 °C peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - maximum continuous reverse working voltage before clamping initiates |
| VBR (min/max) | 60.0 V / 66.3 V at 1 mA - guaranteed breakdown range defining turn-on threshold |
| VC @ IPPM | 87.1 V - clamped voltage during 6.9 A 10/1000 µs transient, limiting stress on downstream components |
| PPPM | 600 W - peak transient power handling capability under standardized surge waveform |
| IPPM | 6.9 A - maximum non-repetitive surge current the device safely conducts without failure |
| TJ max. | +150 °C - maximum junction temperature enabling operation in high-ambient industrial environments |
| Package | SMB (DO-214AA) - industry-standard 2-pin surface-mount outline with 5.21 mm × 4.06 mm footprint |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, compliant with J-STD-002 and JESD 22-B102 solderability standards. Cathode indicated by band marking on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (cathode-banded end is opposite) | Connected to circuit ground or lower-potential node in unidirectional protection configuration |
| Cathode | Avalanche clamping terminal (marked with band) | Connected to protected line (e.g., DC input rail or signal trace) to shunt overvoltage to ground |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power rating | Enables robust suppression of IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 24–48 V systems |
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics applications requiring reliability under thermal cycling and vibration |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage exposure to protected ICs compared to higher-ratio TVS devices |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, simplifying SMT manufacturing flow |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress |
Applications
| Industrial Power Supply Input Protection | Automotive Body Control Module (BCM) Power Rails |
|---|---|
|
Use Scenario: 48 V DC input stage of programmable logic controller (PLC) power module exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between input rail and chassis ground. Use Value: Limits transient voltage to ≤87.1 V during 6.9 A surges, preventing damage to upstream rectifier and downstream DC-DC controller ICs. |
Use Scenario: 12 V battery-fed power distribution network in BCM, subject to ISO 7637-2 Pulse 1/2a/5a transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main VBAT rail prior to LDO regulators and microcontroller supply pins. Use Value: AEC-Q101 qualification and 150 °C TJ max. ensure sustained operation across automotive temperature range (-40 °C to +125 °C ambient). |
| Industrial Sensor Signal Line Protection | Telecom DC Feeder Protection |
|
Use Scenario: 24 V analog current loop (4–20 mA) interface for pressure sensor in factory automation system. IC Role / Device Role / Timing Role: Low-capacitance TVS placed across signal and return lines to suppress ESD and fast transients. Use Value: 87.1 V clamping voltage prevents latch-up in op-amp front-end while maintaining signal integrity under normal 24 V operation. |
Use Scenario: -48 V DC power feed to remote radio head (RRH) in 4G/5G base station, vulnerable to lightning-induced surges. IC Role / Device Role / Timing Role: First-stage surge protector on -48 V input, coordinated with downstream MOVs and gas discharge tubes. Use Value: 600 W PPPM and 6.9 A IPPM provide defined energy absorption capacity before secondary protection triggers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ54A-E3/52 | Same electrical specs and SMB package; RoHS-compliant commercial grade (non-AEC-Q101) | Lacks automotive qualification; suitable for industrial/commercial designs without automotive certification requirements | Select when AEC-Q101 is not mandated and cost optimization is prioritized |
| SMCJ54AHE3_A/H | Same VWM, VBR, and VC; higher PPPM = 1500 W in larger SMC (DO-214AB) package | Requires larger PCB footprint and higher thermal mass; used where surge energy exceeds 600 W | Select when system-level surge testing requires >600 W clamping capacity and board space permits SMC outline |
Compared with SMBJ54AHE3_A/H, SMBJ54A-E3/52 offers identical protection performance without automotive qualification, while SMCJ54AHE3_A/H delivers 2.5× higher surge power handling in a physically larger package - enabling tiered design flexibility based on energy threat level and qualification scope.
Availability
SMBJ54AHE3_A/H is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, telecom DC feeders, and sensor interface protection requiring stable component supply and AEC-Q101 compliance.
Supply support for SMBJ54AHE3_A/H includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and high-volume manufacturability.
The SMBJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for robust, low-inductance transient suppression in automotive, industrial, and telecom infrastructure applications where consistent clamping and AEC-Q101 validation are critical.
FAQ
What is the clamping voltage of SMBJ54AHE3_A/H at its rated peak pulse current?
The SMBJ54AHE3_A/H has a maximum clamping voltage (VC) of 87.1 V when subjected to its rated peak pulse current (IPPM) of 6.9 A under the standard 10/1000 µs waveform. This value is measured at the device terminals and defines the upper voltage limit imposed on protected circuits during surge events - a critical parameter for ensuring downstream ICs remain within absolute maximum ratings. The SMBJ54AHE3_A/H achieves this clamping performance while maintaining low incremental surge resistance.
Is SMBJ54AHE3_A/H qualified for automotive applications?
Yes, SMBJ54AHE3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in the 88392 datasheet. This qualification validates its reliability under automotive-grade temperature cycling, mechanical shock, and humidity testing - making it suitable for use in body control modules, infotainment power rails, and other non-safety-critical automotive subsystems. The SMBJ54AHE3_A/H maintains full specification compliance across -55 °C to +150 °C junction temperature range.
What does the "HE3" suffix in SMBJ54AHE3_A/H indicate?
The "HE3" suffix in SMBJ54AHE3_A/H denotes RoHS-compliant construction with AEC-Q101 qualification, distinguishing it from commercial-grade variants like "E3". The "H" indicates AEC-Q101 qualification, while "E3" specifies lead-free, RoHS-compliant matte tin plating. The "_A/H" revision code identifies the specific manufacturing lot and test revision per Vishay's internal tracking. This suffix ensures traceability to automotive-grade process controls and reliability testing protocols applied to each SMBJ54AHE3_A/H unit.
How does SMBJ54AHE3_A/H compare to bidirectional TVS diodes with the same VWM?
SMBJ54AHE3_A/H is unidirectional and intended for DC line protection where polarity is fixed (e.g., +54 V rail to ground), offering lower leakage and tighter VBR tolerance than bidirectional equivalents. Bidirectional versions (e.g., SMBJ54CA) conduct in both directions and are used on AC or floating signal lines - but exhibit higher reverse leakage at VWM and require different layout considerations. The SMBJ54AHE3_A/H's cathode band provides unambiguous polarity marking, reducing assembly errors in high-volume SMT production.
What is the thermal resistance of SMBJ54AHE3_A/H, and how does it affect PCB layout?
The SMBJ54AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W, measured on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperatures during repetitive surges or elevated ambient conditions, PCB layout must allocate adequate copper area - especially for the cathode pad - and avoid excessive trace length or narrow routing that increases thermal impedance. The SMBJ54AHE3_A/H's low RθJL supports efficient heat transfer to the PCB plane when properly mounted.
SMBJ54AHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 87.1V
- Current - Peak Pulse (10/1000µs):
- 6.9A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ54AHE3_A/H FAQ
1.How can I place an order for SMBJ54AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ54AHE3_A/H on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SMBJ54AHE3_A/H reliable?
The price and inventory of SMBJ54AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ54AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ54AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ54AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ54AHE3_A/H?
SMBJ54AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ54AHE3_A/H order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SMBJ54AHE3_A/H?
For technical support, including SMBJ54AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ54AHE3_A/H requirements.
6.How does Aetrix verify that SMBJ54AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ54AHE3_A/H products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMBJ54AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ54AHE3_A/H?
All SMBJ54AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ54AHE3_A/H, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SMBJ54AHE3_A/H part is unused and in its original packaging.
Return procedure for SMBJ54AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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