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Diodes Incorporated SMBJ22CA-13-F
- Part No.:
- SMBJ22CA-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ22CA-13-F.pdf
- Description:
- TVS DIODE 22VWM 35.5VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:27,272
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Product details
Overview
SMBJ22CA-13-F from Diodes Incorporated is a bi-directional 600W surface-mount transient voltage suppressor (TVS) diode with 22V reverse standoff voltage, 24.4V minimum breakdown voltage at 1mA test current, 35.5V maximum clamping voltage at 16.9A peak pulse current, and SMB package. It protects DC power rails and data lines in industrial motor drives against ESD, lightning-induced surges, and inductive switching transients.
For engineers reviewing the SMBJ22CA-13-F datasheet, SMBJ22CA-13-F pinout, SMBJ22CA-13-F application, or SMBJ22CA-13-F equivalent, key selection criteria include clamping voltage margin relative to system operating voltage, peak pulse current capability under 8.3ms half-sine waveform, thermal derating above +25°C, and bi-directional symmetry for AC-coupled signal protection.
Technical Context
This TVS operates as a voltage-clamped shunt protector: when transient voltage exceeds VRWM (22V), it avalanches into low-impedance conduction, limiting downstream voltage to ≤35.5V at 16.9A. Its glass-passivated die ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
The device complies with IEC 61000-4-2 (ESD) and IEC 61000-4-5 (surge) immunity requirements. Its bi-directional configuration enables symmetrical clamping on AC signals or floating buses without polarity constraints, unlike unidirectional variants requiring cathode orientation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - Sustains single 8.3ms half-sine surge without failure; defines maximum energy absorption capacity. |
| Reverse Standoff Voltage | 22V - Maximum continuous DC or RMS AC voltage before significant leakage; sets operating voltage ceiling. |
| Breakdown Voltage | 24.4V min @ 1mA - Confirmed avalanche initiation threshold; ensures reliable triggering above system nominal voltage. |
| Clamping Voltage | 35.5V max @ 16.9A - Upper voltage limit imposed on protected circuit during worst-case surge; determines IC survival margin. |
| Peak Pulse Current | 16.9A @ 8.3ms - Maximum surge current handled at rated clamping voltage; validates compliance with Level 4 IEC 61000-4-5. |
| Leakage Current | 5.0µA max @ 22V - Low off-state current minimizes standby power loss and avoids false triggering in high-impedance nodes. |
| Operating Temperature | -55°C to +150°C - Enables deployment in under-hood automotive, industrial PLCs, and outdoor power electronics. |
Pinout & Package
Package: SMB (Surface Mount Body), molded plastic case per UL 94V-0, 0.1g weight, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode | Bi-directional terminals | No polarity marking; symmetric conduction in both directions - simplifies PCB layout and eliminates orientation errors. |
Key Features
| Feature | Design Value |
|---|---|
| 600W peak pulse power | Enables robust protection against high-energy transients (e.g., 4kV/2Ω IEC 61000-4-5 surge) without thermal runaway. |
| Glass passivated die | Ensures stable VBR over temperature and lifetime; reduces parameter drift versus epoxy-passivated alternatives. |
| Bi-directional architecture | Supports AC line protection (e.g., RS-485, CAN bus, audio inputs) without external series components or polarity awareness. |
| Lead-free & halogen-free | Meets RoHS 2 and JEDEC J-STD-020; compatible with lead-free reflow profiles and green manufacturing requirements. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of 24V DC power input against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Shunt TVS placed upstream of DC-DC converters and microcontrollers to clamp surges to safe levels. Use Value: Limits voltage to ≤35.5V during 120A/100ms load dump events, preventing damage to 36V-rated power management ICs. |
Use Scenario: ESD and surge protection on LIN bus lines connecting door modules and seat controllers. IC Role / Device Role / Timing Role: Bi-directional clamping element on bidirectional serial bus, absorbing ±8kV contact discharge per IEC 61000-4-2. Use Value: Maintains signal integrity below 35.5V clamping threshold while adding <0.5pF parasitic capacitance at 1MHz. |
| Industrial Ethernet Switches | Smart Energy Meters |
Use Scenario: Surge protection on PoE (Power over Ethernet) data pairs exposed to induced lightning currents. IC Role / Device Role / Timing Role: Paired bi-directional TVS on differential Ethernet lines (e.g., TX+/TX−), referenced to common-mode ground. Use Value: Clamps common-mode surges to ≤35.5V without distorting 100BASE-TX signaling up to 125MHz. |
Use Scenario: Protection of 220VAC metering front-end against neutral-ground surges and capacitor-switching transients. IC Role / Device Role / Timing Role: Secondary-level TVS across isolated AC sensing inputs after primary MOV suppression. Use Value: Provides precise 35.5V clamping to safeguard 24-bit sigma-delta ADC reference rails from residual overshoot. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22C-13-F (Bourns) | Identical 22V VRWM, 35.5V VC, but 10% higher IPP (18.6A); slightly tighter VBR tolerance (24.4–28.0V vs. 24.4–28.0V). | Same SMB footprint and bi-directional function; validated for IEC 61000-4-5 Level 4 in telecom power supplies. | Select when higher peak current margin is required and Bourns supply chain preference applies. |
| P6SMB22CA (Littelfuse) | Same 22V VRWM and 35.5V VC, but lower PPK (600W same), and 20% higher IR (10µA @ 22V). | Approved for automotive AEC-Q200 Grade 1; includes extended temperature validation (-40°C to +125°C ambient). | Choose for automotive-grade qualification where AEC-Q200 compliance is mandatory. |
Compared with SMBJ22CA-13-F, SMBJ22C-13-F offers marginal peak current headroom but no qualification advantage, while P6SMB22CA trades slightly higher leakage for formal AEC-Q200 certification-critical for body electronics but unnecessary for industrial controls.
Availability
SMBJ22CA-13-F is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, industrial Ethernet switches, and smart energy meters requiring stable component supply across multi-year production cycles.
Supply support for SMBJ22CA-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, specializing in high-reliability protection, power management, and signal integrity solutions for industrial, computing, and automotive markets.
SMBJ22CA-13-F belongs to Diodes' SMBJ series of surface-mount TVS diodes, engineered for high-power transient suppression in space-constrained applications where fast response, repeatable clamping, and RoHS-compliant packaging are essential.
FAQ
What is the maximum clamping voltage of SMBJ22CA-13-F at its rated peak pulse current?
The maximum clamping voltage (VC) is 35.5V at 16.9A peak pulse current (IPP), measured under the standardized 8.3ms half-sine waveform per IEC 61000-4-5. This value is guaranteed across the full operating temperature range of −55°C to +150°C and defines the upper voltage limit imposed on protected circuits during surge events.
Is SMBJ22CA-13-F suitable for protecting RS-485 communication lines?
Yes - its bi-directional configuration, low 35.5V clamping voltage, and <0.5pF typical junction capacitance at 1MHz make it appropriate for RS-485 differential pair protection. It must be placed across the A/B lines with proper PCB layout (short traces, ground plane coupling) to maintain signal integrity up to 10Mbps without introducing timing skew or reflection.
How does the SMBJ22CA-13-F differ from the unidirectional SMBJ22A-13-F?
SMBJ22CA-13-F has identical electrical ratings but lacks polarity marking and conducts symmetrically in both directions, enabling use on AC or floating nodes. SMBJ22A-13-F features a cathode band, conducts only in reverse bias, and requires correct orientation - making it unsuitable for bidirectional signals like CAN or USB without additional circuitry.
What is the thermal derating behavior above +25°C ambient?
Peak pulse power derates linearly at 4.8W/°C above +25°C ambient, meaning at +75°C ambient, maximum usable PPK drops to 360W (600W − 4.8W/°C × 50°C). Steady-state power dissipation is limited to 5.0W at TL = +75°C, with derating to zero at +150°C per Fig. 6 in the datasheet.
SMBJ22CA-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):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 16.9A
- 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
SMBJ22CA-13-F FAQ
1.How can I place an order for SMBJ22CA-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ22CA-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 SMBJ22CA-13-F reliable?
The price and inventory of SMBJ22CA-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 SMBJ22CA-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ22CA-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ22CA-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ22CA-13-F?
SMBJ22CA-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ22CA-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 SMBJ22CA-13-F?
For technical support, including SMBJ22CA-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ22CA-13-F requirements.
6.How does Aetrix verify that SMBJ22CA-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ22CA-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 SMBJ22CA-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ22CA-13-F?
All SMBJ22CA-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ22CA-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 SMBJ22CA-13-F part is unused and in its original packaging.
Return procedure for SMBJ22CA-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ22CA-13-F Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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