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Diodes Incorporated SMBJ54CA-13-F
- Part No.:
- SMBJ54CA-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ54CA-13-F.pdf
- Description:
- TVS DIODE 54VWM 87.1VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:16,632
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Product details
Overview
SMBJ54CA-13-F from Diodes Incorporated is a bi-directional 600W transient voltage suppressor (TVS) diode in SMB package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 54V reverse standoff voltage (VRWM), 60V minimum breakdown voltage (VBR), 87.1V maximum clamping voltage (VC) at 6.9A peak pulse current (IPP), and operates across –55°C to +150°C junction temperature range - deployed in industrial power supplies and automotive body control modules.
For engineers reviewing the SMBJ54CA-13-F datasheet, SMBJ54CA-13-F pinout, SMBJ54CA-13-F application, or SMBJ54CA-13-F equivalent, key selection criteria include clamping performance under 8.3ms surge, unidirectional vs. bi-directional polarity requirements, thermal derating above +25°C, and compatibility with automated SMT assembly on FR-4 PCBs.
Technical Context
This bi-directional TVS diode functions as a voltage-clamped shunt protector, activating when transient voltage exceeds its breakdown threshold (60–69 V) to divert surge energy away from downstream ICs. Its glass-passivated silicon die ensures stable leakage (<5 µA at VRWM) and repeatable clamping behavior across temperature.
The device complies with IEC 61000-4-2 (ESD) and IEC 61000-4-5 (surge) immunity standards when applied with proper PCB layout and series impedance. Its 600W peak pulse power rating is valid for non-repetitive 8.3ms half-sine wave surges at ≤4 pulses/minute, with linear derating above +25°C (4.8 W/°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600 W - sustains single 8.3ms surge without failure; defines maximum transient energy absorption capability |
| Reverse Standoff Voltage (VRWM) | 54 V - maximum continuous DC or RMS voltage before significant leakage; sets operating rail margin |
| Breakdown Voltage (VBR) | 60.0–69.0 V @ 1 mA - onset of avalanche conduction; determines clamping activation threshold |
| Clamping Voltage (VC) | 87.1 V @ 6.9 A IPP - maximum voltage seen by protected circuit during rated surge; critical for IC survival |
| Junction Temperature Range | –55°C to +150°C - enables use in under-hood automotive and industrial environments without thermal shutdown |
| Package | SMB (DO-214AA) - surface-mount outline with 5.0–5.59 mm length, 3.3–3.94 mm width, 1.96–2.21 mm height; compatible with standard reflow profiles |
| RoHS & Green Compliance | Lead-free, halogen-free, antimony-free - meets EU RoHS 2 (2011/65/EU) and Diodes Inc.'s "Green" definition (<900 ppm Br/Cl, <1000 ppm Sb) |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with UL 94V-0 flammability rating, matte tin-plated terminals, 0.1 g typical weight. Cathode band marking omitted - bi-directional symmetry eliminates polarity identification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bi-directional avalanche terminals | Either terminal serves as cathode or anode depending on transient polarity; no orientation required during placement |
| Case | Non-conductive plastic body | No electrical connection; provides mechanical support and insulation; requires clearance from adjacent copper |
Key Features
| Feature | Design Value |
|---|---|
| 600W peak pulse power dissipation | Enables protection against high-energy transients (e.g., ISO 7637-2 Pulse 5a) without thermal runaway |
| Glass passivated die construction | Ensures long-term parameter stability and low leakage drift under humidity and thermal cycling stress |
| Bi-directional configuration (suffix C) | Protects AC-coupled or floating signal lines (e.g., RS-485, CAN bus, sensor bridges) without polarity constraints |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on protected ICs compared to higher-ratio suppressors; improves system reliability |
| Moisture sensitivity level 1 | Eliminates need for dry-packaging or baking prior to SMT reflow; reduces manufacturing overhead |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 24V DC input stage of programmable logic controller (PLC) power supply exposed to load dump and inductive switching noise. IC Role / Device Role: Primary shunt TVS for rail-level surge suppression upstream of DC-DC converter. Use Value: Clamps transients to ≤87.1 V, preventing damage to 100V-rated input MOSFETs and enabling compliance with IEC 61000-4-5 Level 4 (4 kV line-earth). |
Use Scenario: LIN bus transceiver interface in door module subjected to battery disconnect spikes and ESD events. IC Role / Device Role: Bi-directional overvoltage clamp on bidirectional LIN data line (±40 V tolerance required). Use Value: Symmetric clamping protects both positive and negative transients without polarity-sensitive placement; supports ISO 10605 ±8 kV contact discharge. |
| RS-485 Communication Port | Smart Meter Sensor Interface |
Use Scenario: Termination point of long-haul RS-485 trunk line in utility substation, vulnerable to lightning-induced surges. IC Role / Device Role: Secondary protection device placed after gas discharge tube (GDT) in hybrid cascade design. Use Value: Low clamping voltage limits residual surge to transceiver's absolute maximum rating (±15 V); fast response (<1 ns) complements GDT's slower arc initiation. |
Use Scenario: Analog front-end of current transformer (CT) and Rogowski coil inputs in revenue-grade electricity meter. IC Role / Device Role: Input-stage transient suppressor for isolated ADC reference and signal paths. Use Value: Sub-5 µA leakage at 54 V VRWM avoids measurement offset error; stable VBR ensures consistent trip point across temperature (-40°C to +85°C operating range). |
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-13-F | Uni-directional; includes cathode band marking; identical VRWM, VBR, VC, and IPP ratings | Requires correct polarity alignment; unsuitable for AC or floating nodes | Select only when protecting unidirectional DC rails (e.g., 54 V bias supply) where polarity is fixed and known |
| SMAJ54CA | Same bi-directional function but lower 400W peak power; SMA package (smaller footprint, lower thermal mass) | Limited to lower-energy transients; not suitable for ISO 7637-2 Pulse 5a or high-current surges | Choose for space-constrained designs with moderate surge exposure (e.g., consumer IoT sensor nodes) |
Compared with SMBJ54A-13-F, the bi-directional SMBJ54CA-13-F eliminates polarity dependency but trades no performance loss; versus SMAJ54CA, it delivers 50% higher surge energy handling in the same functional role, justifying SMB's larger thermal mass in demanding industrial deployments.
Availability
SMBJ54CA-13-F is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, RS-485 communication ports, and smart meter sensor interfaces requiring stable component supply, full traceability, and long-lifecycle availability.
Supply support for SMBJ54CA-13-F 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
This device belongs to Diodes' SMBJ series of high-power surface-mount TVS diodes, engineered specifically for robust transient suppression in harsh-environment applications including automotive, industrial automation, and telecom infrastructure.
FAQ
What is the difference between SMBJ54CA-13-F and SMBJ54A-13-F?
The "C" suffix denotes bi-directionality: SMBJ54CA-13-F suppresses transients of either polarity symmetrically, with no cathode marking, while SMBJ54A-13-F is uni-directional, featuring a cathode band and conducting only in reverse bias. Both share identical VRWM (54 V), VBR (60–69 V), VC (87.1 V), and IPP (6.9 A) ratings - the distinction is purely in polarity handling and PCB placement flexibility.
Can SMBJ54CA-13-F be used in automotive applications?
Yes - it meets AEC-Q101 stress test requirements for TVS diodes and operates from –55°C to +150°C. Its 600W peak power and 87.1V clamping voltage make it suitable for protecting 24V/48V automotive subsystems against load dump (ISO 7637-2 Pulse 5a) and coupled transients, provided series impedance and PCB layout follow Diodes Inc. application note AN-2001.
What is the maximum steady-state power dissipation at 75°C lead temperature?
The datasheet specifies PM(AV) = 5.0 W at TL = +75°C. This value is derived from thermal resistance and ambient derating curves; operation above this limit risks thermal runaway. For continuous DC stress, ensure average power remains below 5.0 W with adequate copper pour and airflow - do not rely on peak pulse ratings for steady-state design.
Does SMBJ54CA-13-F require special handling for moisture sensitivity?
No - it is rated Moisture Sensitivity Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/60% RH and placed directly into reflow without baking. This simplifies SMT line integration and eliminates moisture-related popcorning risk during lead-free soldering profiles.
SMBJ54CA-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
SMBJ54CA-13-F FAQ
1.How can I place an order for SMBJ54CA-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ54CA-13-F 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 SMBJ54CA-13-F reliable?
The price and inventory of SMBJ54CA-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ54CA-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ54CA-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ54CA-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ54CA-13-F?
SMBJ54CA-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ54CA-13-F 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 SMBJ54CA-13-F?
For technical support, including SMBJ54CA-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ54CA-13-F requirements.
6.How does Aetrix verify that SMBJ54CA-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ54CA-13-F 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 SMBJ54CA-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ54CA-13-F?
All SMBJ54CA-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ54CA-13-F, 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 SMBJ54CA-13-F part is unused and in its original packaging.
Return procedure for SMBJ54CA-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ54CA-13-F Tags
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