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Vishay General Semiconductor - Diodes Division SMBJ22CA-E3/52
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- Part No.:
- SMBJ22CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ22CA-E3/52.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:524
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Product details
Overview
SMBJ22CA-E3/52 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 or power lines. It features a 22 V standoff voltage (VWM), 24.4–26.9 V breakdown range (VBR) at 1 mA, 35.5 V maximum clamping voltage (VC) at 16.9 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the SMBJ22CA-E3/52 datasheet, SMBJ22CA-E3/52 pinout, SMBJ22CA-E3/52 application, or SMBJ22CA-E3/52 equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.43), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the low incremental surge resistance supports rapid energy dissipation during ESD or lightning-induced surges.
The device complies with ANSI/IEEE C62.35 for transient suppressor definitions and meets UL 497B recognition (QVGQ2) for protector classification. Thermal performance is characterized by RθJA = 100 °C/W and RθJL = 20 °C/W, with operation rated from −55 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (min/max) | 24.4 V / 26.9 V at IT = 1 mA - Confirmed bidirectional breakdown window; ensures predictable turn-on across production lots. |
| VC @ IPPM | 35.5 V at 16.9 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on protected downstream circuitry. |
| PPPM | 600 W - Peak pulse power handling with 0.01% duty cycle; enables robust protection against repetitive transients like inductive switching. |
| IPPM | 16.9 A - Peak surge current capacity under standard 10/1000 µs waveform; directly correlates with PCB pad thermal design requirements. |
| Junction Temp Range | −55 °C to +150 °C - Specifies full operational envelope for automotive, industrial, and outdoor deployments without derating. |
| MSL Level | Level 1 per J-STD-020 - No floor life limitation; supports unlimited exposure to ambient conditions prior to reflow. |
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), cathode band omitted per bidirectional design.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (either direction) | Acts as current sink during positive or negative overvoltage events; connects to line being protected. |
| Cathode | Transient current exit (either direction) | Completes conduction path to ground or return rail; symmetrical with Anode in bidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Supports high-energy surge suppression in motor drives and power supply inputs without thermal runaway. |
| Low clamping voltage (35.5 V @ 16.9 A) | Minimizes voltage overshoot on protected ICs, preserving margin below absolute maximum ratings of 3.3 V or 5 V logic interfaces. |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage (<1 µA), critical for battery-powered sensor nodes with strict quiescent current budgets. |
| MSL Level 1, lead-free matte tin plating | Enables direct placement into high-volume SMT lines without baking or special handling; compliant with J-STD-002 solderability standards. |
| UL 497B recognized (QVGQ2) | Validates suitability for telecom and industrial safety-critical applications requiring third-party certification for surge protection components. |
Applications
| Industrial Motor Control | Automotive Sensor Interface |
|---|---|
|
Use Scenario: Protection of gate drivers and feedback signal lines in variable-frequency drives subjected to inductive kickback from 48 V DC bus switching. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across MOSFET gate-source or op-amp input pins to limit transient excursions. Use Value: Prevents latch-up or oxide damage in SiC gate drivers by limiting VGS to ≤35.5 V during 16.9 A surge events. |
Use Scenario: Shielding LIN/CAN physical layer receivers in body control modules from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Line-to-ground TVS on differential sensor signal pair (e.g., temperature or pressure transducer outputs). Use Value: Maintains signal integrity below 22 V working voltage while clamping ±35.5 V spikes - compatible with 24 V automotive supply rails. |
| Telecom Power Feeds | Consumer USB-C Port Protection |
|
Use Scenario: Surge suppression on −48 V DC telecom power distribution boards exposed to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Bidirectional shunt device between power rail and chassis ground, absorbing energy via avalanche conduction. Use Value: Withstands repeated 600 W surges without degradation, meeting GR-1089-CORE Level 3 immunity requirements. |
Use Scenario: Overvoltage guard on USB-C CC and VBUS lines in portable docking stations handling hot-plug and cable insertion events. IC Role / Device Role / Timing Role: Fast-response transient clamp placed upstream of USB PD controller and port protection ICs. Use Value: Sub-1 ns response time limits VBUS overshoot to <36 V during 100 V/1 µs ESD strikes, preventing false PD negotiation resets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22CA-M3/52 | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package. | No difference in circuit function or layout; selected where halogen-free BOM compliance is mandated. | Direct material substitution when environmental compliance requires halogen-free construction. |
| SMCJ22CA-E3/52 | Same VWM, VBR, and VC, but in larger SMC (DO-214AB) package with 1500 W PPPM. | Higher surge capacity suits higher-risk environments (e.g., outdoor base stations), but requires larger PCB area. | Choose when system-level surge testing exceeds 600 W and board space permits SMC footprint. |
Compared with SMBJ22CA-E3/52, the M3/52 variant offers identical protection performance with halogen-free materials, while the SMCJ22CA-E3/52 delivers 2.5× higher pulse power in a larger package - enabling trade-offs between board density and ruggedness in field-deployed systems.
Availability
SMBJ22CA-E3/52 is available at Aetrix Electronics and suitable for industrial motor control, automotive sensor interface, telecom power feed, and consumer USB-C port protection requiring stable component supply and full traceability.
Supply support for SMBJ22CA-E3/52 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, and protection devices with emphasis on reliability and application-specific optimization.
The SMBJ series targets high-volume surface-mount transient suppression in cost-sensitive, space-constrained applications - balancing 600 W surge capability with compact SMB packaging and automated assembly readiness.
FAQ
What is the maximum clamping voltage of SMBJ22CA-E3/52 at its rated peak pulse current?
The SMBJ22CA-E3/52 has a maximum clamping voltage (VC) of 35.5 V at its rated peak pulse current (IPPM) of 16.9 A, measured using the standardized 10/1000 µs double-exponential waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is confirmed in the Vishay datasheet Document Number 88392, page 2.
Is SMBJ22CA-E3/52 suitable for automotive applications requiring AEC-Q101 qualification?
No - SMBJ22CA-E3/52 is commercial-grade and RoHS-compliant but not AEC-Q101 qualified. For automotive use, select the Vishay variant SMBJ22CAHE3_B/H or SMBJ22CAHM3_B/H, which carry the HE3 or HM3 suffix and are explicitly qualified per AEC-Q101. The SMBJ22CA-E3/52 lacks the required stress test documentation and process controls for automotive deployment.
How does the bidirectional nature of SMBJ22CA-E3/52 affect its PCB layout compared to unidirectional TVS diodes?
The SMBJ22CA-E3/52 has no polarity marking and functions identically in both directions, eliminating orientation constraints during placement. Unlike unidirectional variants (e.g., SMBJ22A-E3/52), it requires no cathode-band alignment - simplifying automated optical inspection and reducing assembly errors in differential or AC-coupled signal paths where voltage polarity reverses.
What is the thermal resistance from junction to ambient for SMBJ22CA-E3/52 under standard mounting conditions?
The typical thermal resistance from junction to ambient (RθJA) for SMBJ22CA-E3/52 is 100 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay Document Number 88392, page 3. This value assumes still air and defines the steady-state temperature rise under continuous 5.0 W power dissipation.
Does SMBJ22CA-E3/52 meet UL recognition requirements for surge protection components?
Yes - SMBJ22CA-E3/52 is Underwriters Laboratories (UL) recognized under file number E136766 for both unidirectional and bidirectional devices, complying with UL 497B for protectors. This certification validates its suitability in end-equipment requiring third-party safety approval, including telecom infrastructure and industrial control panels.
SMBJ22CA-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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:
- DO-214AA (SMBJ)
SMBJ22CA-E3/52 FAQ
1.How can I place an order for SMBJ22CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ22CA-E3/52 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 SMBJ22CA-E3/52 reliable?
The price and inventory of SMBJ22CA-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ22CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ22CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ22CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ22CA-E3/52?
SMBJ22CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ22CA-E3/52 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 SMBJ22CA-E3/52?
For technical support, including SMBJ22CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ22CA-E3/52 requirements.
6.How does Aetrix verify that SMBJ22CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ22CA-E3/52 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 SMBJ22CA-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ22CA-E3/52?
All SMBJ22CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ22CA-E3/52, 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 SMBJ22CA-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ22CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ22CA-E3/52 Tags
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