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Vishay General Semiconductor - Diodes Division SMBJ54CAHE3_A/H
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- Part No.:
- SMBJ54CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ54CAHE3_A/H.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,607
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Product details
Overview
SMBJ54CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 54 V standoff voltage (VWM), 600 W peak pulse power (10/1000 µs), clamping voltage of 87.1 V at 6.9 A peak pulse current, and operates across -55 °C to +150 °C junction temperature - deployed in industrial sensor interface protection and automotive body control modules.
For engineers reviewing the SMBJ54CAHE3_A/H datasheet, SMBJ54CAHE3_A/H pinout, SMBJ54CAHE3_A/H application, or SMBJ54CAHE3_A/H equivalent, key selection considerations include bidirectional clamping symmetry, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This device functions as a voltage-clamping protector using an avalanche breakdown mechanism. Its bidirectional architecture ensures symmetrical clamping in both polarities, with breakdown voltage (VBR) specified at 60.0–66.3 V (min/max) under 1 mA test current and maximum clamping voltage (VC) of 87.1 V at 6.9 A IPPM.
It meets J-STD-020 MSL Level 1 moisture sensitivity, supports lead-free reflow up to 260 °C peak, and is qualified to AEC-Q101 for automotive use. The glass-passivated junction delivers fast response time (<1 ns) and low incremental surge resistance, critical for protecting MOSFET gates and microcontroller I/O lines against ESD and inductive switching spikes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 54 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 60.0–66.3 V at IT = 1 mA - Confirmed avalanche threshold range; ensures reliable turn-on during transients. |
| VC (Clamping Voltage) | 87.1 V at IPPM = 6.9 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy absorption capability; validated per standard 10/1000 µs waveform. |
| IPPM (Peak Pulse Current) | 6.9 A - Maximum non-repetitive surge current the device can divert without failure. |
| TJmax | +150 °C - Maximum junction temperature rating; enables operation in under-hood automotive and industrial environments. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads; informs board-level thermal design. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), matte tin-plated terminals, RoHS-compliant and halogen-free (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode / Anode (Bidirectional) | Common terminal pair | No polarity marking; symmetric conduction in both directions - connects across protected line and ground or differential pair. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including body electronics and infotainment power rails - supports PPAP and long-term reliability requirements. |
| 600 W peak pulse power (10/1000 µs) | Robust surge handling for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3/4 transients without degradation. |
| Fast response time (<1 ns) | Clamps transients before sensitive ICs experience overvoltage - critical for protecting high-speed sensor interfaces and CAN bus nodes. |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly processes without pre-baking or special handling. |
| Glass-passivated junction | Enhances long-term stability and reduces leakage drift over temperature and lifetime vs. epoxy-passivated alternatives. |
Applications
| Industrial Sensor Interface Protection | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Protecting 24 V CAN FD and LIN bus transceivers from load dump and inductive kickback in factory automation systems. IC Role / Device Role / Timing Role: Bidirectional clamping TVS placed between signal line and chassis ground to limit transient voltage to <87.1 V. Use Value: Prevents latch-up or permanent damage to transceiver ICs during 100 V/500 ms load dump events per ISO 16750-2. |
Use Scenario: Safeguarding microcontroller GPIOs and power supply inputs in door module ECUs exposed to battery reversal and jump-start surges. IC Role / Device Role / Timing Role: Standoff-rated (54 V) bidirectional suppressor shunting transients on 12 V power rail and wake-up lines. Use Value: Maintains system uptime by absorbing 600 W surges without failure, meeting AEC-Q101 lifetime requirements. |
| Telecom Power Input Stage | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Shielding PoE-powered Ethernet switch ports from lightning-induced surges on DC input lines. IC Role / Device Role / Timing Role: Primary clamping device on 48 V DC input, coordinated with upstream GDT and downstream filter capacitors. Use Value: Limits clamped voltage to 87.1 V - well below 100 V input stage MOSFET VDSS, avoiding secondary overstress. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in smart washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Mounted across motor terminals to clamp inductive flyback voltage during PWM switching. Use Value: Enables use of lower-voltage, cost-optimized motor driver ICs by capping spike amplitude to 87.1 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ54CA-M3/52 | Same electrical specs and SMB package; halogen-free, RoHS-compliant, commercial-grade (non-AEC-Q101). | Lacks automotive qualification; suitable for industrial/commercial designs where AEC-Q101 is not mandated. | Select when cost-sensitive volume production requires halogen-free compliance without automotive validation overhead. |
| SMCJ54CAHE3_A/H | Same VWM/VC ratings but in larger SMC (DO-214AB) package; higher PPPM = 1500 W; RθJA = 40 °C/W. | Better thermal performance and surge margin; requires larger PCB footprint and different pad layout. | Choose when system-level surge testing exceeds 600 W or sustained ambient temperatures exceed 105 °C. |
Compared with SMBJ54CAHE3_A/H, SMBJ54CA-M3/52 offers identical protection performance without AEC-Q101 validation, while SMCJ54CAHE3_A/H provides higher surge capacity and lower thermal resistance at the cost of increased board area - enabling trade-offs between qualification scope, power handling, and layout density.
Availability
SMBJ54CAHE3_A/H is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, telecom power inputs, and consumer appliance motor drives requiring stable component supply and AEC-Q101 traceability.
Supply support for SMBJ54CAHE3_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, precision, and automotive-grade qualification.
The SMBJ series is engineered for robust transient suppression in space-constrained SMT applications - targeting automotive, industrial, and communications systems where compact size, high surge capability, and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SMBJ54CAHE3_A/H at its rated peak pulse current?
The SMBJ54CAHE3_A/H has a maximum clamping voltage (VC) of 87.1 V at 6.9 A peak pulse current (IPPM) 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.
Is SMBJ54CAHE3_A/H qualified to AEC-Q101, and what does that mean for automotive use?
Yes, SMBJ54CAHE3_A/H carries the HE3 suffix, confirming full AEC-Q101 qualification per Vishay's ordering nomenclature. This means the device has passed stress tests including high-temperature operating life, temperature cycling, and ESD - validating its suitability for automotive applications such as body control modules and infotainment power supplies where long-term reliability under harsh conditions is required.
What is the standoff voltage (VWM) of SMBJ54CAHE3_A/H, and how does it relate to system operating voltage?
The SMBJ54CAHE3_A/H has a VWM of 54 V - the maximum continuous DC or RMS voltage the device can withstand without entering breakdown. For reliable operation, system nominal voltage (e.g., 48 V telecom or 36 V automotive) must stay below this value with margin; typical design practice maintains ≥10 % headroom, making SMBJ54CAHE3_A/H ideal for 42 V nominal systems.
Does SMBJ54CAHE3_A/H have polarity markings, and how is it mounted on PCB?
No, SMBJ54CAHE3_A/H is a bidirectional TVS and carries no cathode band or polarity marking. It is mounted symmetrically across the protected line and reference plane (e.g., signal-to-ground or differential pair). The SMB (DO-214AA) package uses matte tin-plated leads compatible with J-STD-002 solderability standards and requires 0.2" × 0.2" copper pads per terminal for rated thermal performance.
How does the thermal resistance RθJA = 100 °C/W affect SMBJ54CAHE3_A/H layout design?
The SMBJ54CAHE3_A/H specifies RθJA = 100 °C/W when mounted on minimum recommended 0.2" × 0.2" copper pads. This value directly impacts junction temperature rise: at 5.0 W steady-state dissipation, ΔT = 500 °C - which exceeds rating, confirming the device is intended only for transient (not continuous) power dissipation. Layout must follow Vishay's pad dimensions to ensure specified surge performance and avoid thermal derating.
SMBJ54CAHE3_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:
- -
- Bidirectional Channels:
- 1
- 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)
SMBJ54CAHE3_A/H FAQ
1.How can I place an order for SMBJ54CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ54CAHE3_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 SMBJ54CAHE3_A/H reliable?
The price and inventory of SMBJ54CAHE3_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 SMBJ54CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ54CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ54CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ54CAHE3_A/H?
SMBJ54CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ54CAHE3_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 SMBJ54CAHE3_A/H?
For technical support, including SMBJ54CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ54CAHE3_A/H requirements.
6.How does Aetrix verify that SMBJ54CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ54CAHE3_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 SMBJ54CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ54CAHE3_A/H?
All SMBJ54CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ54CAHE3_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 SMBJ54CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMBJ54CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ54CAHE3_A/H Tags
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