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Vishay General Semiconductor - Diodes Division SMBJ54AHE3/52
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- Part No.:
- SMBJ54AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ54AHE3/52.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,843
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Product details
Overview
SMBJ54AHE3/52 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, 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 and automotive ECUs.
For engineers reviewing the SMBJ54AHE3/52 datasheet, SMBJ54AHE3/52 pinout, SMBJ54AHE3/52 application, or SMBJ54AHE3/52 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), clamping behavior (VC = 87.1 V at IPPM), and packaging details aligned with J-STD-020 MSL Level 1.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its 60.0–66.3 V breakdown range. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1 ns), enabling protection against ESD, lightning-induced surges, and inductive switching spikes.
Thermally, it sustains 150 °C maximum junction temperature with 5.0 W steady-state power dissipation on infinite heatsink at 50 °C ambient. The device is rated for 100 A non-repetitive forward surge (8.3 ms half-sine) and meets UL 497B recognition (QVGQ2) for telecom and industrial protector classification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC bias margin for protected circuitry. |
| VBR (min/max) | 60.0 V / 66.3 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on across manufacturing lot and temperature. |
| VC @ IPPM | 87.1 V at 6.9 A (10/1000 µs) - Clamped voltage seen by downstream components during surge; determines maximum stress on protected ICs. |
| PPPM | 600 W - Peak transient energy handling capacity; supports robust protection in automotive load-dump and industrial motor drive environments. |
| IFSM | 100 A - Single half-sine surge rating (8.3 ms); validates survivability against high-current inductive kick events. |
| TJ max. | 150 °C - Maximum junction temperature; enables operation in under-hood automotive and high-ambient industrial enclosures. |
| RθJA | 100 °C/W - Thermal resistance junction-to-ambient on standard 0.2" × 0.2" copper pads; informs PCB thermal design and derating requirements. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity indicated by cathode band; unidirectional configuration only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential rail; completes clamping path during reverse transient. |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 54 V supply rail); conducts avalanche current when VREV > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements - supports use in engine control, body electronics, and ADAS modules without additional qualification. |
| 600 W peak pulse power | Handles high-energy transients per 10/1000 µs waveform at 0.01% duty cycle - suitable for load-dump and ISO 7637-2 Pulse 5a compliance designs. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients - improves clamping precision for sensitive 3.3 V/5 V logic interfaces. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns - eliminates bake requirements pre-assembly. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure - critical for industrial field reliability. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V power rails in engine control units (ECUs) against ISO 7637-2 load-dump pulses and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery input and DC-DC converter input stage. Use Value: Limits transient voltage to ≤87.1 V during 600 W surges, preventing overvoltage damage to downstream regulators and microcontrollers. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in PLC I/O modules exposed to field wiring transients. IC Role / Device Role / Timing Role: Point-of-entry protection on 4–20 mA or 0–10 V signal lines before instrumentation amplifier inputs. Use Value: Sub-1 ns response clamps ESD and inductive spikes before they saturate front-end amplifiers or corrupt ADC readings. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Stage |
Use Scenario: Shielding Ethernet PHY power pins and auxiliary bias rails in telecom base station line cards from lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level TVS on +5 V/+12 V bias rails feeding PHY ICs and clock buffers. Use Value: 6.9 A IPPM rating and 87.1 V clamping ensure compliance with ITU-T K.21 basic protection level for outdoor equipment. |
Use Scenario: Reinforcing primary-side overvoltage protection in universal-input AC/DC adapters after bridge rectifier and bulk capacitor. IC Role / Device Role / Timing Role: Parallel-connected TVS across bulk capacitor terminals to absorb residual switching spikes and line surges. Use Value: 54 V VWM aligns with 400 V DC bus derating; 600 W PPPM handles repetitive surge stress without degradation. |
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 | No AEC-Q101 qualification; commercial-grade only; identical electrical specs and SMB package. | Limited to non-automotive industrial and consumer applications where automotive reliability certification is not required. | Select when cost sensitivity outweighs automotive qualification needs and full lifecycle traceability is not mandated. |
| SMCJ54AHE3/52 | Higher 1500 W PPPM; same VWM/VBR, but larger SMC (DO-214AB) package; RθJA = 40 °C/W. | Better thermal performance and surge margin; requires larger PCB footprint and higher assembly cost. | Choose for high-reliability industrial systems requiring >1000 W surge capability and lower thermal resistance. |
Compared with SMBJ54AHE3/52, the E3/52 variant lacks AEC-Q101 validation but matches all electrical parameters, while SMCJ54AHE3/52 trades compact SMB size for 2.5× higher surge power and superior thermal management - guiding selection based on automotive compliance, board space, and energy-handling priority.
Availability
SMBJ54AHE3/52 is available at Aetrix Electronics and suitable for automotive ECU designs, industrial sensor interface boards, telecom line card protection, and consumer power adapter development requiring stable component supply and AEC-Q101 assurance.
Supply support for SMBJ54AHE3/52 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, efficiency, and application-specific performance.
The SMBJ series targets high-volume transient protection in automotive, industrial, and telecom infrastructure - engineered for robustness under harsh electrical and thermal conditions with standardized surface-mount form factors.
FAQ
What is the clamping voltage of SMBJ54AHE3/52 at its rated peak pulse current?
The SMBJ54AHE3/52 has a maximum clamping voltage (VC) of 87.1 V when subjected to its rated peak pulse current of 6.9 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings. The SMBJ54AHE3/52 maintains this clamping performance across its specified operating temperature range.
Is SMBJ54AHE3/52 qualified for automotive applications?
Yes, SMBJ54AHE3/52 is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in datasheet revision 09-Jan-2024. This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD - validating its suitability for under-hood and chassis-mounted automotive electronics. The SMBJ54AHE3/52 meets these requirements without derating or special screening beyond standard production lots.
What is the standoff voltage and breakdown range of SMBJ54AHE3/52?
The SMBJ54AHE3/52 has a reverse stand-off voltage (VWM) of 54 V and a minimum/maximum breakdown voltage (VBR) of 60.0 V / 66.3 V at 1 mA test current. This 6 V window ensures reliable blocking of normal operating voltages while guaranteeing consistent avalanche initiation during overvoltage events. The SMBJ54AHE3/52 maintains these values across -55 °C to +150 °C junction temperature per specification.
Does SMBJ54AHE3/52 have a bidirectional version?
No, SMBJ54AHE3/52 is strictly unidirectional, indicated by the "A" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., SMBJ54CA), which exhibit symmetrical clamping in both polarities and no polarity marking. The SMBJ54AHE3/52's unidirectional architecture provides lower leakage and optimized forward conduction path for ground-referenced protection schemes - distinct from bidirectional behavior and pin-compatible layout.
What package type and mounting specifications apply to SMBJ54AHE3/52?
SMBJ54AHE3/52 uses the SMB (DO-214AA) surface-mount package with dimensions of 4.57 mm × 3.94 mm × 2.20 mm and matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. It is rated MSL Level 1 (peak reflow 260 °C) and requires 0.2" × 0.2" copper pads per terminal for thermal and mechanical reliability. The SMBJ54AHE3/52's low-profile form factor supports automated placement and high-density PCB layouts.
SMBJ54AHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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)
SMBJ54AHE3/52 FAQ
1.How can I place an order for SMBJ54AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ54AHE3/52 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 SMBJ54AHE3/52 reliable?
The price and inventory of SMBJ54AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ54AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ54AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ54AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ54AHE3/52?
SMBJ54AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ54AHE3/52 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 SMBJ54AHE3/52?
For technical support, including SMBJ54AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ54AHE3/52 requirements.
6.How does Aetrix verify that SMBJ54AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ54AHE3/52 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 SMBJ54AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ54AHE3/52?
All SMBJ54AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ54AHE3/52, 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 SMBJ54AHE3/52 part is unused and in its original packaging.
Return procedure for SMBJ54AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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