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Vishay General Semiconductor - Diodes Division SMBJ22CAHE3_A/H
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- Part No.:
- SMBJ22CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ22CAHE3_A/H.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,733
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Product details
Overview
SMBJ22CAHE3_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 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR) at 1 mA, 35.5 V maximum clamping voltage (VC) at 16.9 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform), used to protect MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the SMBJ22CAHE3_A/H datasheet, SMBJ22CAHE3_A/H pinout, SMBJ22CAHE3_A/H application, or SMBJ22CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), and compliance with UL 497B for surge protector classification.
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 sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the 10/1000 µs surge rating reflects real-world lightning and inductive-switching transient immunity.
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), supporting reliable operation under sustained power dissipation up to 5.0 W at 50 °C ambient when mounted on recommended 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 22 V - Maximum continuous reverse working voltage before significant conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 24.4–26.9 V at 1 mA - Voltage at which device enters avalanche conduction; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 35.5 V at IPPM = 16.9 A - Maximum voltage seen by protected circuit during 10/1000 µs surge; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Surge energy handling capacity per IEC 61000-4-5 / ANSI C62.41; validates robustness against lightning-induced transients. |
| ID (Reverse Leakage) | ≤1.0 µA at VWM - Minimal standby current draw; avoids signal integrity degradation or battery drain in low-power systems. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in high-ambient environments such as automotive engine bays or industrial enclosures. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing; suitable for under-hood and infotainment applications. |
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; meets UL 94 V-0 flammability rating and MSL level 1 (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node for bidirectional conduction path | No polarity marking required; symmetrical structure enables identical clamping in either direction. |
| Cathode | Current exit terminal in forward bias; electrically equivalent to Anode in bidirectional mode | Terminal designation retained for legacy compatibility but functionally interchangeable with Anode in SMBJ22CAHE3_A/H. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signals, differential buses (e.g., RS-485), and ungrounded circuits without polarity constraints. |
| 600 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial and telecom infrastructure. |
| AEC-Q101 qualification | Validates long-term reliability under automotive thermal, mechanical, and electrical stress conditions. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients, improving protection margin for sensitive ICs. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies SMT manufacturing flow. |
Applications
| Industrial Motor Drives | Automotive Infotainment |
|---|---|
|
Use Scenario: Protection of gate drivers and microcontroller I/O pins against inductive kickback from relay coils and solenoid switching. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across power rails and signal lines to limit transient voltage spikes to safe levels. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic interfaces while maintaining signal integrity during frequent switching cycles. |
Use Scenario: Shielding USB 2.0 and HDMI signal lines in head units from ESD and load-dump induced surges. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor installed at board-level connectors to absorb ±8 kV contact ESD per IEC 61000-4-2. Use Value: Ensures uninterrupted video/audio transmission and prevents system resets caused by electrostatic discharge events. |
| Telecom Base Station Power | Consumer Smart Home Sensors |
|
Use Scenario: Safeguarding 48 V DC power inputs and Ethernet PHY interfaces against lightning-induced surges in outdoor small cells. IC Role / Device Role / Timing Role: Primary front-end TVS stage absorbing multi-kW transients before secondary protection stages. Use Value: Extends mean time between failures (MTBF) by reducing field returns linked to surge-related component degradation. |
Use Scenario: Protecting I²C and analog sensor outputs (e.g., temperature, motion) in battery-powered smart thermostats and door sensors. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA) bidirectional clamp preserving battery life while suppressing ESD from user touch interfaces. Use Value: Enables >5-year operational lifetime without maintenance in sealed, non-replaceable battery designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22CA-E3/52 | Commercial-grade (non-AEC-Q101), same VWM/VBR/VC specs, identical SMB package and pinout | Lacks automotive qualification; not approved for under-hood or safety-critical vehicle subsystems | Select when cost-sensitive industrial or consumer designs do not require automotive reliability validation. |
| SMCJ22CAHE3_A/H | Same electrical specs but in larger SMC (DO-214AB) package; higher thermal mass and RθJA = 50 °C/W | Better sustained power handling (1500 W PPPM); requires larger PCB area and different pad layout | Choose when system-level surge testing exceeds 600 W or when extended thermal derating margin is required. |
Compared with SMBJ22CA-E3/52, SMBJ22CAHE3_A/H adds AEC-Q101 qualification for automotive use; compared with SMCJ22CAHE3_A/H, it trades lower surge rating for compact SMB footprint and automated placement compatibility.
Availability
SMBJ22CAHE3_A/H is available at Aetrix Electronics and suitable for industrial motor drives, automotive infotainment systems, and telecom base station power supplies requiring stable component supply and automotive-grade reliability assurance.
Supply support for SMBJ22CAHE3_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, and protection devices with emphasis on high-reliability, high-efficiency solutions.
The SMBJ series targets board-level transient suppression in space-constrained applications, combining automotive qualification, industry-standard surge ratings, and surface-mount manufacturability for high-volume electronics.
FAQ
What is the clamping voltage of SMBJ22CAHE3_A/H at its rated peak pulse current?
The SMBJ22CAHE3_A/H has a maximum clamping voltage (VC) of 35.5 V at its rated peak pulse current (IPPM) of 16.9 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. The SMBJ22CAHE3_A/H maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C).
Is SMBJ22CAHE3_A/H suitable for automotive applications?
Yes, SMBJ22CAHE3_A/H is AEC-Q101 qualified, meaning it has passed rigorous stress tests including temperature cycling, high-temperature reverse bias, and ESD verification required for automotive electronic modules. Its RoHS-compliant construction and HE3 suffix confirm automotive-grade qualification, making SMBJ22CAHE3_A/H appropriate for infotainment, body control, and ADAS subsystems where reliability under thermal and vibration stress is critical.
How does the bidirectional design of SMBJ22CAHE3_A/H affect its circuit implementation?
The bidirectional architecture of SMBJ22CAHE3_A/H eliminates polarity concerns during placement-no cathode band marking is present-and allows symmetric clamping on AC-coupled lines, differential buses (e.g., CAN, RS-485), or ungrounded signal paths. Unlike unidirectional variants, SMBJ22CAHE3_A/H conducts equally in both directions above VBR, ensuring consistent protection regardless of transient polarity, which simplifies schematic symbol usage and reduces BOM complexity.
What is the thermal resistance of SMBJ22CAHE3_A/H, and how does it impact PCB layout?
SMBJ22CAHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 5.0 mm × 5.0 mm copper pads per terminal. This value assumes standard FR-4 board material and no additional heatsinking. To maintain safe junction temperatures under repeated surges, designers must adhere to the specified pad layout and avoid excessive trace narrowing near the SMBJ22CAHE3_A/H terminals to preserve thermal conduction paths.
Does SMBJ22CAHE3_A/H meet any safety certifications for surge protection?
Yes, SMBJ22CAHE3_A/H carries Underwriters Laboratories (UL) recognition under file number E136766 for both unidirectional and bidirectional devices, complying with UL 497B for primary protector classification. This certification validates its suitability in telecom and industrial applications where regulatory approval for surge suppression is mandatory, and confirms its ability to safely divert surge energy without fire hazard or insulation breakdown.
SMBJ22CAHE3_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):
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ22CAHE3_A/H FAQ
1.How can I place an order for SMBJ22CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ22CAHE3_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 SMBJ22CAHE3_A/H reliable?
The price and inventory of SMBJ22CAHE3_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 SMBJ22CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ22CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ22CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ22CAHE3_A/H?
SMBJ22CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ22CAHE3_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 SMBJ22CAHE3_A/H?
For technical support, including SMBJ22CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ22CAHE3_A/H requirements.
6.How does Aetrix verify that SMBJ22CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ22CAHE3_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 SMBJ22CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ22CAHE3_A/H?
All SMBJ22CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ22CAHE3_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 SMBJ22CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMBJ22CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ22CAHE3_A/H Tags
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