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Vishay General Semiconductor - Diodes Division SMBJ54A-E3/5B
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- Part No.:
- SMBJ54A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ54A-E3/5B.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,450
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Product details
Overview
SMBJ54A-E3/5B 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 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, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ54A-E3/5B datasheet, SMBJ54A-E3/5B pinout, SMBJ54A-E3/5B application, or SMBJ54A-E3/5B equivalent, key selection criteria include unidirectional polarity, 1.0 µA max reverse leakage at VWM, 150 °C max junction temperature, and RoHS-compliant matte tin-plated leads suitable for automated SMT assembly.
Technical Context
This TVS diode operates as a voltage-clamping protection device triggered by transient overvoltage events. Its glass-passivated junction enables fast response time (<1 ns), low incremental surge resistance, and stable clamping performance under repetitive 10/1000 µs surges at 0.01% duty cycle.
The SMBJ54A-E3/5B is rated for 100 A non-repetitive forward surge current (IFSM) and exhibits a 0.104 %/°C temperature coefficient of VBR. Thermal resistance is 100 °C/W junction-to-ambient (RθJA) on standard 0.2" × 0.2" copper pads, supporting reliable operation in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working range. |
| VBR (min/max) | 60.0 V / 66.3 V at IT = 1 mA - Confirmed breakdown threshold ensures predictable turn-on during transients. |
| VC @ IPPM | 87.1 V at 6.9 A - Clamping voltage limits downstream component stress during 600 W surge events. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform supports IEC 61000-4-5 Level 4 compliance. |
| IR @ VWM | ≤1.0 µA - Ultra-low leakage preserves signal integrity and minimizes standby power loss. |
| Junction Temp | −55 °C to +150 °C - Enables deployment in automotive under-hood, industrial motor drives, and outdoor telecom equipment. |
| Package | SMB (DO-214AA) - Low-profile surface-mount outline compatible with standard reflow profiles and J-STD-020 MSL level 1. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; cathode indicated by band marking on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side (e.g., ground or return path) in unidirectional protection configuration. |
| Cathode | Current exit terminal; marked with band | Connected to protected line (e.g., 54 V rail or signal input); conducts when transient exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Supports robust protection against lightning-induced surges and inductive switching spikes per IEC 61000-4-5. |
| Glass passivated junction | Ensures long-term reliability and stable VBR performance across temperature and lifetime cycling. |
| MSL Level 1 rating | Enables direct placement without baking; compatible with standard lead-free reflow profiles up to 260 °C peak. |
| RoHS-compliant, halogen-free option available | E3 suffix denotes commercial-grade RoHS compliance; meets environmental requirements for global electronics manufacturing. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes let-through voltage to safeguard sensitive 60 V-rated components such as gate drivers and ADC front-ends. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate driver supply rails against back-EMF spikes from brushed DC motors and solenoids. IC Role / Device Role / Timing Role: Unidirectional TVS clamps positive transients on 48–60 V auxiliary power rails feeding half-bridge drivers. Use Value: Limits voltage excursion to ≤87.1 V during 6.9 A surges, preventing latch-up or oxide breakdown in SiC MOSFET gate oxides. |
Use Scenario: Surge suppression on LIN bus power lines and sensor supply inputs exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Standoff at 54 V allows normal operation during 14 V nominal battery swings while clamping 120 V transients. Use Value: 1.0 µA leakage avoids loading low-current sensor bias networks; 150 °C rating supports under-dash mounting. |
| Telecom Power Feeds | Industrial PLC I/O Modules |
|
Use Scenario: Input-stage protection for PoE-powered remote radio units subjected to induced surges on 48 V DC feeds. IC Role / Device Role / Timing Role: Fast-response TVS placed upstream of DC-DC converters to absorb energy before regulation stage. Use Value: 600 W rating handles multiple 10/1000 µs surges without degradation; SMB footprint saves space in dense power modules. |
Use Scenario: Protection of analog input channels (e.g., 4–20 mA loops) against ESD and field-wiring faults in factory automation systems. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to system ground, shunting transients away from precision op-amp inputs. Use Value: 87.1 V clamping voltage ensures compatibility with 100 V-rated input protection ICs and isolation amplifiers. |
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-M3/5B | Halogen-free, RoHS-compliant variant; identical electrical specs and SMB package. | No functional difference; selected where halogen-free materials are mandated by OEM or regional regulations. | Choose M3/5B for green manufacturing compliance without design change. |
| SMCJ54A-E3/5B | Same VWM/VBR/VC, but in larger SMC (DO-214AB) package with 1500 W PPPM. | Higher power handling suits higher-energy surge environments (e.g., AC mains input stages), but requires larger PCB area. | Select SMCJ54A-E3/5B only when >600 W surge margin is required and board space permits. |
Compared with SMBJ54A-E3/5B, the M3/5B variant offers identical protection performance with halogen-free construction, while the SMCJ54A-E3/5B provides 2.5× higher pulse power in a physically larger package - enabling trade-offs between board density and surge margin.
Availability
SMBJ54A-E3/5B is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power feeds requiring stable component supply, consistent RoHS compliance, and verified surge immunity performance.
Supply support for SMBJ54A-E3/5B 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 and application-specific optimization.
The SMBJ series is engineered for high-reliability transient suppression in space-constrained, high-surge environments - targeting industrial, automotive, and telecom infrastructure where consistent clamping and long-term stability are critical.
FAQ
What is the maximum clamping voltage of SMBJ54A-E3/5B at its rated peak pulse current?
The SMBJ54A-E3/5B has a maximum clamping voltage (VC) of 87.1 V at 6.9 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured and guaranteed per Vishay's datasheet revision 09-Jan-2024 (Document Number: 88392). The clamping performance ensures protected circuits remain within safe voltage limits during surge events, making SMBJ54A-E3/5B suitable for safeguarding 60 V-rated components.
Is SMBJ54A-E3/5B RoHS-compliant and lead-free?
Yes, SMBJ54A-E3/5B is RoHS-compliant and lead-free, as confirmed by the "E3" suffix in its part number. Vishay specifies that base P/N-E3 parts meet RoHS requirements and use matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. The device also satisfies JESD 201 Class 2 whisker testing, ensuring reliability in lead-free reflow processes - critical for modern electronics manufacturing using SMBJ54A-E3/5B.
What is the thermal resistance and maximum junction temperature for SMBJ54A-E3/5B?
SMBJ54A-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads, and a maximum operating junction temperature (TJ) of +150 °C. These values are specified in the Thermal Characteristics section of the Vishay datasheet. The 150 °C rating allows SMBJ54A-E3/5B to operate reliably in high-temperature environments such as industrial motor controls and under-hood automotive applications.
How does the breakdown voltage tolerance of SMBJ54A-E3/5B compare to its stand-off voltage?
SMBJ54A-E3/5B has a minimum breakdown voltage (VBR) of 60.0 V and maximum of 66.3 V at 1 mA test current, while its stand-off voltage (VWM) is 54 V. This 6–12.3 V margin ensures the device remains non-conductive during normal operation yet triggers rapidly during overvoltage events. The specified VBR range is validated per ANSI/IEEE C62.35 and directly supports design margining for SMBJ54A-E3/5B in protection circuits.
Can SMBJ54A-E3/5B be used in bidirectional transient protection applications?
No, SMBJ54A-E3/5B is a unidirectional TVS diode, as indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay specifies the "CA" suffix (e.g., SMBJ54CA). Using SMBJ54A-E3/5B in bidirectional configurations would leave the anode-to-cathode reverse path unprotected. Always verify polarity designation: SMBJ54A-E3/5B is intended for clamping positive transients relative to ground, not symmetrical AC surges.
SMBJ54A-E3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ54A-E3/5B FAQ
1.How can I place an order for SMBJ54A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ54A-E3/5B 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 SMBJ54A-E3/5B reliable?
The price and inventory of SMBJ54A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ54A-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ54A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ54A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ54A-E3/5B?
SMBJ54A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ54A-E3/5B 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 SMBJ54A-E3/5B?
For technical support, including SMBJ54A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ54A-E3/5B requirements.
6.How does Aetrix verify that SMBJ54A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ54A-E3/5B 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 SMBJ54A-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ54A-E3/5B?
All SMBJ54A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ54A-E3/5B, 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 SMBJ54A-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ54A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ54A-E3/5B Tags
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