My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ54AHE3_A/I
;;2.jpg)
- Part No.:
- SMBJ54AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ54AHE3_A/I.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,434
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ54AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection of sensitive electronics. It features a 54 V standoff voltage (VWM), 60.0–66.3 V breakdown range at 1 mA, 600 W peak pulse power (10/1000 µs), and clamps transients to ≤87.1 V at 6.9 A, making it suitable for protecting MOSFETs, ICs, and sensor signal lines in industrial power supplies and telecom interfaces.
For engineers reviewing the SMBJ54AHE3_A/I datasheet, SMBJ54AHE3_A/I pinout, SMBJ54AHE3_A/I application, or SMBJ54AHE3_A/I equivalent, this device is evaluated for fast-response surge suppression in DC power rails, automotive body electronics per AEC-Q101 qualification, and high-reliability industrial I/O protection where low clamping voltage and MSL Level 1 solderability are critical selection criteria.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp with cathode-band polarity marking, optimized for transient energy absorption without forward conduction during normal operation. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at 54 V), while the DO-214AA (SMB) package enables automated placement and meets UL 94 V-0 flammability requirements.
The device delivers 600 W peak pulse power under standardized 10/1000 µs waveform conditions, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead). It is rated for continuous operation from –55 °C to +150 °C and qualified to AEC-Q101 for automotive applications when ordered with HE3 suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 48 V systems. |
| VBR (min/max) | 60.0 V / 66.3 V at 1 mA - Confirmed breakdown threshold range; ensures reliable triggering above nominal rail. |
| VC @ IPPM | ≤87.1 V at 6.9 A - Clamped voltage during 600 W transient; limits downstream component stress. |
| PPPM | 600 W - Peak pulse power handling (10/1000 µs); supports common lightning/surge immunity standards. |
| IFSM | 100 A - Non-repetitive forward surge current rating (8.3 ms half-sine); validates robustness against inrush events. |
| TJ max | +150 °C - Maximum junction temperature; enables use in high-ambient environments like engine control units. |
| Package | SMB (DO-214AA) - Surface-mount outline with 0.205" × 0.130" footprint; compatible with standard reflow profiles (peak 260 °C). |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, polarity indicated by cathode band on one end. Mounting uses 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per JEDEC recommendations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-voltage return path; forms clamping path during positive transients. |
| Cathode | Protected line input | Connected to the line being protected (e.g., 48 V rail); avalanche conduction occurs from cathode to anode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood and body electronics; ensures reliability across temperature cycling and humidity tests. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges without degradation when properly mounted. |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes voltage overshoot during clamping-critical for protecting 60 V-rated MOSFETs and logic ICs. |
| MSL Level 1 (260 °C peak) | Enables single-reflow assembly without moisture sensitivity concerns; eliminates bake-out requirement. |
| Glass passivated junction | Provides stable VBR tolerance and low leakage (<1 µA) over lifetime and temperature extremes. |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module |
|---|---|
|
Use Scenario: Protecting 48 V DC input stage of programmable logic controllers against load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between input rail and ground to shunt surge energy before reaching DC-DC converters. Use Value: Limits transient voltage to ≤87.1 V, preventing damage to 100 V-rated input FETs and maintaining system uptime. |
Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins in door module ECUs exposed to battery transients. IC Role / Device Role / Timing Role: Standoff protection device on 12 V supply rail, triggered only during >54 V events such as jump-start surges. Use Value: AEC-Q101 qualification ensures compliance with ISO 7637-2 Pulse 5a/b; clamping response <1 ns prevents data corruption. |
| Telecom Interface Protection | Sensor Signal Line Protection |
|
Use Scenario: Shielding RS-485 transceiver power pins in base station remote units from induced lightning surges on long cable runs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on VCC rail, coordinated with secondary GDT or polymer PTC for staged protection. Use Value: 600 W rating handles multi-kV induced transients; low VC preserves transceiver's absolute maximum ratings. |
Use Scenario: Guarding analog output lines of pressure sensors in HVAC control panels against ESD and relay coil flyback. IC Role / Device Role / Timing Role: Low-capacitance (typ. 100 pF) unidirectional suppressor placed at connector entry point. Use Value: 1.0 µA max leakage at 54 V avoids signal offset errors; SMB package fits tight board space near connectors. |
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 | Commercial-grade (non-AEC-Q101), same electrical specs and SMB package. | Lacks automotive qualification; unsuitable for vehicle-mounted modules requiring AEC compliance. | Select when cost-sensitive industrial designs do not require automotive reliability validation. |
| SMCJ54AHE3_A/I | Same VWM/VBR/VC, but SMC (DO-214AB) package with higher 1500 W PPPM. | Physically larger footprint; used where higher surge margin is required despite space constraints. | Choose when system-level surge testing exceeds 600 W or when legacy SMC layout exists. |
Compared with SMBJ54AHE3_A/I, the SMBJ54A-E3/52 offers identical protection performance at lower cost but no automotive qualification, while the SMCJ54AHE3_A/I provides 2.5× higher surge capacity in a larger package-enabling design flexibility for varying reliability and layout requirements.
Availability
SMBJ54AHE3_A/I is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, and telecom interface protection requiring stable component supply, AEC-Q101 validation, and RoHS-compliant sourcing.
Supply support for SMBJ54AHE3_A/I 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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and communications systems where consistent clamping performance and long-term stability are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ54AHE3_A/I at its rated peak pulse current?
The SMBJ54AHE3_A/I clamps to a maximum of 87.1 V when subjected to its peak pulse current of 6.9 A (10/1000 µs waveform). This value is measured per standard test conditions and ensures downstream components see limited overvoltage during surge events. The SMBJ54AHE3_A/I maintains this clamping performance across its full operating temperature range and after repeated surge exposures when mounted per recommended pad layout.
Is SMBJ54AHE3_A/I suitable for automotive applications?
Yes, SMBJ54AHE3_A/I is AEC-Q101 qualified, making it suitable for automotive applications including body control modules, lighting drivers, and infotainment power rails. The "HE3" suffix explicitly denotes AEC-Q101 qualification, RoHS compliance, and halogen-free construction. Engineers deploying SMBJ54AHE3_A/I in vehicle systems can rely on its validated performance under temperature cycling, humidity, and mechanical shock per the AEC standard.
What does the "A/I" suffix mean in SMBJ54AHE3_A/I?
The "A/I" suffix in SMBJ54AHE3_A/I indicates packaging configuration: "A" denotes the revision code (per Vishay's internal revision tracking), and "I" specifies 13-inch diameter tape-and-reel delivery with 3200 units per reel. This format supports high-volume automated assembly. The base part SMBJ54AHE3 is unchanged-only packaging and reel size differ from variants like SMBJ54AHE3_B/H (7-inch reel, 750 units).
How does SMBJ54AHE3_A/I compare to bidirectional TVS diodes like SMBJ54CA?
SMBJ54AHE3_A/I is unidirectional and intended for DC rail protection with defined polarity (cathode to protected line), whereas SMBJ54CA is bidirectional and used in AC or floating signal paths. SMBJ54AHE3_A/I has lower leakage (<1.0 µA at 54 V) and higher surge current capability in one direction, while SMBJ54CA provides symmetrical clamping but slightly higher capacitance. Select SMBJ54AHE3_A/I for 48 V power rails; choose SMBJ54CA only for differential or AC-coupled lines.
What is the thermal resistance of SMBJ54AHE3_A/I, and how does it affect PCB layout?
SMBJ54AHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W. To maintain safe operation under sustained power dissipation, PCB layout must use minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal as specified in the Vishay datasheet. Reducing pad area increases RθJA, risking thermal runaway during repetitive surges-so SMBJ54AHE3_A/I layout adherence directly impacts long-term reliability.
SMBJ54AHE3_A/I 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/I FAQ
1.How can I place an order for SMBJ54AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ54AHE3_A/I 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/I reliable?
The price and inventory of SMBJ54AHE3_A/I 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/I is usually 5 days.
3.What payment methods are accepted for SMBJ54AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ54AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ54AHE3_A/I?
SMBJ54AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ54AHE3_A/I 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/I?
For technical support, including SMBJ54AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ54AHE3_A/I requirements.
6.How does Aetrix verify that SMBJ54AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ54AHE3_A/I 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/I meets industry standards.
7.What is the process for return or replacement of SMBJ54AHE3_A/I?
All SMBJ54AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ54AHE3_A/I, 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/I part is unused and in its original packaging.
Return procedure for SMBJ54AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ54AHE3_A/I Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
