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Vishay General Semiconductor - Diodes Division SMBJ54AHE3_B/H
- Part No.:
- SMBJ54AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ54AHE3_B/H.pdf
- Description:
- 600W,54V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBJ54AHE3_B/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 54 V stand-off voltage (VWM), 60.0–66.3 V breakdown voltage (VBR) at 1 mA, 87.1 V maximum clamping voltage (VC) at 6.9 A peak pulse current (IPPM), and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive power supply inputs, industrial sensor interfaces, and telecom line protection.
For engineers reviewing the SMBJ54AHE3_B/H datasheet, SMBJ54AHE3_B/H pinout, SMBJ54AHE3_B/H application, or SMBJ54AHE3_B/H equivalent, this device is evaluated for fast-response surge suppression in AEC-Q101-compliant systems where low clamping voltage, high surge current tolerance, and stable thermal performance up to 150 °C junction temperature are critical selection criteria.
Technical Context
This TVS diode operates as a unidirectional clamping device: reverse-biased during normal operation with ≤1.0 µA leakage at 54 V, then rapidly avalanches when transients exceed VBR to limit voltage across protected circuitry. Its glass-passivated junction ensures consistent breakdown behavior and long-term reliability under repetitive surge stress.
Thermally, it exhibits RθJA = 100 °C/W (junction-to-ambient, on 0.2" × 0.2" copper pads) and RθJL = 20 °C/W (junction-to-lead), enabling effective heat dissipation in compact PCB layouts. The device is rated for -55 °C to +150 °C operating junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - maximum continuous reverse operating voltage before significant leakage; defines safe DC rail voltage ceiling for protection. |
| VBR (min/max) | 60.0 V / 66.3 V at 1 mA - precise avalanche initiation range ensuring predictable turn-on during transients. |
| VC @ IPPM | 87.1 V at 6.9 A - clamped voltage during 10/1000 µs surge; determines worst-case overvoltage seen by downstream ICs. |
| PPPM | 600 W - peak pulse power handling capability; supports high-energy ESD and lightning-induced surges. |
| TJ max. | +150 °C - maximum junction temperature; enables use in under-hood automotive and high-ambient industrial environments. |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 0.220" × 0.155" footprint; compatible with automated placement and reflow. |
| AEC-Q101 | Qualified - certified for automotive electronics per stress test requirements, including temperature cycling and HTRB. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity with cathode band marking. Dimensions: 5.59 mm × 3.94 mm × 2.44 mm (L × W × H). Matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; forms current path during avalanche conduction. |
| Cathode | High-side connection point | Connected to protected line (e.g., 54 V rail); marked with band; reverse-biased during normal operation. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Handles high-energy transients (e.g., ISO 7637-2 Pulse 5a) without degradation when mounted per recommended pad layout. |
| 87.1 V clamping voltage at 6.9 A | Limits voltage overshoot to safe levels for 60 V-rated MOSFETs and microcontrollers in 48 V systems. |
| AEC-Q101 qualified | Validated for automotive-grade reliability including HTOL, TC, and UHAST - suitable for engine control and ADAS power domains. |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free reflow assembly without moisture-related damage or delamination risk. |
| Glass passivated junction | Provides stable VBR tolerance and low leakage drift over temperature and lifetime vs. epoxy-passivated alternatives. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: Protecting 48 V battery-fed ECUs against load dump and alternator transients per ISO 16750-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp surges above 54 V. Use Value: Limits peak voltage to 87.1 V during 600 W pulses, preventing damage to upstream DC-DC controllers and CAN transceivers. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) from ESD and field wiring transients in factory automation. IC Role / Device Role / Timing Role: Low-capacitance TVS connected from signal line to ground, responding in <1 ps to sub-nanosecond ESD events. Use Value: Maintains signal integrity with ≤1.0 µA leakage at 54 V and clamps induced spikes before they reach precision ADC front-ends. |
| Telecom DC Power Feeds | Consumer Device USB Port Surge Guard |
Use Scenario: Safeguarding PoE-powered equipment (e.g., IP cameras) from induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC bus, coordinated with upstream MOVs and fuses. Use Value: Withstands 100 A IFSM (8.3 ms half-sine) and delivers repeatable 600 W pulse protection without parameter shift after 1000 surges. |
Use Scenario: Adding secondary-level surge immunity to USB-C power delivery inputs in portable medical monitors. IC Role / Device Role / Timing Role: Standoff-rated TVS on VBUS line, selected for 54 V VWM to avoid conduction during 20 V PD negotiation. Use Value: Provides 87.1 V clamping margin above USB PD 3.0 48 V profiles while meeting IEC 61000-4-5 Level 3 (1 kV/42 Ω) requirements. |
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 without AEC-Q101 qualification. | Lacks automotive qualification; suitable for industrial/commercial designs not requiring AEC-Q101 traceability. | Select SMBJ54AHE3_B/H when automotive PPAP documentation, extended temperature validation, or zero-defect reliability reporting is required. |
| SAC54 | Lower 500 W PPPM rating; 92 V VC at 6.5 A; same VWM/VBR but higher clamping voltage and lower surge margin. | Marginally adequate for light-duty 48 V systems; insufficient for ISO 7637-2 Pulse 5a compliance. | Choose SMBJ54AHE3_B/H over SAC54 when full 600 W surge headroom and 87.1 V clamping are mandatory for system-level immunity certification. |
Compared with SMBJ54A-E3/52, SMBJ54AHE3_B/H adds AEC-Q101 qualification and process controls for automotive use; compared with SAC54, it delivers 100 W higher pulse power and 4.9 V lower clamping voltage - directly improving system-level surge margin and IC survivability.
Availability
SMBJ54AHE3_B/H is available at Aetrix Electronics and suitable for automotive power distribution modules, industrial sensor interface boards, and telecom DC feed protection requiring stable component supply with AEC-Q101 traceability and long-term lifecycle support.
Supply support for SMBJ54AHE3_B/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, MOSFETs, 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 telecom applications where robustness, tight parametric control, and qualification compliance are non-negotiable.
FAQ
What is the maximum clamping voltage of SMBJ54AHE3_B/H at its rated peak pulse current?
The SMBJ54AHE3_B/H has a maximum clamping voltage (VC) of 87.1 V at its specified peak pulse current (IPPM) of 6.9 A with a 10/1000 µs waveform. This value is measured under standard test conditions per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ54AHE3_B/H maintains this clamping performance across its qualified temperature range and after repeated surge exposure when mounted per Vishay's recommended pad layout.
Is SMBJ54AHE3_B/H suitable for automotive applications requiring AEC-Q101 qualification?
Yes, SMBJ54AHE3_B/H is explicitly AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in datasheet 88392 (Revision 09-Jan-2024). It undergoes stress testing including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing to meet automotive reliability requirements. The SMBJ54AHE3_B/H is intended for use in engine control units, body electronics, and ADAS power domains where qualification evidence and lot traceability are mandatory.
What is the standoff voltage (VWM) and why is it critical for SMBJ54AHE3_B/H placement?
The standoff voltage (VWM) of SMBJ54AHE3_B/H is 54 V - the maximum continuous reverse voltage it can block without exceeding 1.0 µA leakage current. This parameter dictates safe placement on circuits: the SMBJ54AHE3_B/H must be installed on lines whose nominal DC voltage does not exceed 54 V to prevent premature conduction and power loss. For example, it is correctly applied on 48 V automotive rails but would be unsuitable for 60 V systems without derating or redesign.
How does the SMBJ54AHE3_B/H package compare to SMA and SMC variants in terms of power handling?
The SMBJ54AHE3_B/H uses the SMB (DO-214AA) package, which provides higher peak pulse power (600 W) than SMA (DO-214AC, typically 400 W) and lower than SMC (DO-214AB, typically 1500 W). Its 100 °C/W junction-to-ambient thermal resistance requires minimum 0.2" × 0.2" copper pads for full 600 W rating. Unlike SMA, SMB supports AEC-Q101 qualification; unlike SMC, it offers smaller footprint for space-constrained layouts while retaining robust surge capability - making SMBJ54AHE3_B/H optimal for mid-power automotive and industrial protection nodes.
Does SMBJ54AHE3_B/H have polarity markings, and how is it oriented on the PCB?
Yes, SMBJ54AHE3_B/H is unidirectional and features a visible cathode band on the package body - aligned with the cathode terminal. During PCB layout, the banded end must connect to the line being protected (e.g., 54 V rail), while the anode connects to ground or return. Incorrect orientation will prevent proper clamping during positive transients and may cause catastrophic failure. The SMBJ54AHE3_B/H datasheet specifies polarity in mechanical drawings and confirms cathode-band identification per industry-standard DO-214AA conventions.
SMBJ54AHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ54AHE3_B/H FAQ
1.How can I place an order for SMBJ54AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ54AHE3_B/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_B/H reliable?
The price and inventory of SMBJ54AHE3_B/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_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ54AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ54AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ54AHE3_B/H?
SMBJ54AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ54AHE3_B/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_B/H?
For technical support, including SMBJ54AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ54AHE3_B/H requirements.
6.How does Aetrix verify that SMBJ54AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ54AHE3_B/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_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ54AHE3_B/H?
All SMBJ54AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ54AHE3_B/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_B/H part is unused and in its original packaging.
Return procedure for SMBJ54AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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