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Vishay General Semiconductor - Diodes Division SMBJ22CAHE3_B/H
- Part No.:
- SMBJ22CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ22CAHE3_B/H.pdf
- Description:
- 600W,22V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,425
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Product details
Overview
SMBJ22CAHE3_B/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 or power lines. It features a 22 V standoff voltage (VWM), 24.4–26.9 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), and clamps to ≤35.5 V at 16.9 A peak surge current - used for protecting MOSFETs, sensor interfaces, and industrial I/O lines against ESD and inductive switching spikes.
For engineers reviewing the SMBJ22CAHE3_B/H datasheet, SMBJ22CAHE3_B/H pinout, SMBJ22CAHE3_B/H application, or SMBJ22CAHE3_B/H equivalent, this device is selected for robust bidirectional transient suppression in automotive-grade (AEC-Q101 qualified), industrial, and telecom power/signal line protection where low clamping voltage, fast response (<1 ns), and MSL Level 1 reflow compatibility are required.
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 leakage performance and long-term reliability under repetitive surge stress.
The device delivers 600 W peak pulse power handling with a 10/1000 µs waveform and exhibits low incremental surge resistance - critical for minimizing voltage overshoot during fast transients. Thermal resistance (RθJA = 100 °C/W) and junction temperature range (–55 to +150 °C) support operation in harsh ambient environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (min/max) | 24.4 V / 26.9 V at 1 mA - guaranteed breakdown threshold range; ensures consistent turn-on across production lots. |
| VC @ IPPM | ≤35.5 V at 16.9 A - clamped voltage during 600 W transient; determines maximum stress imposed on downstream circuitry. |
| IPPM | 16.9 A - peak surge current capability with 10/1000 µs waveform; quantifies transient energy absorption capacity. |
| PPPM | 600 W - peak pulse power rating; defines transient energy handling per IEEE C62.35 standard test conditions. |
| TJ max | +150 °C - maximum junction temperature; enables use in high-ambient industrial and automotive under-hood applications. |
| MSL Level | Level 1 (per J-STD-020) - supports standard SMT reflow without moisture sensitivity concerns or baking requirements. |
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 leads, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | Accepts surge current from either direction; connects to protected line or node requiring clamping. |
| Cathode | Transient current exit (bidirectional) | Completes low-impedance path to ground or return rail during overvoltage events; symmetric with anode in CA devices. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signals, differential buses (e.g., RS-485), or ungrounded lines without polarity constraints. |
| 600 W peak pulse power (10/1000 µs) | Handles high-energy transients from inductive load switching or lightning-induced surges in industrial control systems. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive electronics including body control modules, sensor interfaces, and infotainment power rails. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage exposure to protected ICs - critical for safeguarding 3.3 V or 5 V logic-level components. |
| MSL Level 1, 260 °C peak reflow | Eliminates pre-baking and supports high-throughput automated assembly in commercial and automotive manufacturing lines. |
Applications
| Industrial Motor Drive I/O Protection | Automotive Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting encoder feedback lines and digital I/O ports in PLCs and servo drives from inductive kickback and EFT bursts. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between signal line and chassis ground to limit transient voltage to <35.5 V. Use Value: Prevents latch-up or damage to microcontroller GPIOs and isolated interface ICs during 600 W surge events. |
Use Scenario: Safeguarding analog outputs (e.g., 0–5 V throttle position sensor) and CAN bus stubs against battery dump and load dump transients. IC Role / Device Role / Timing Role: Standoff-rated (22 V) bidirectional suppressor absorbing >16 A surges while maintaining signal integrity. Use Value: Ensures compliance with ISO 7637-2 Pulse 1/2a/5a and meets AEC-Q101 stress requirements for Tier-1 suppliers. |
| Telecom Power Rail Clamping | Consumer Device USB/DisplayPort ESD Protection |
Use Scenario: Clamping 48 V DC power inputs in PoE-powered switches and base station RF modules against lightning-induced surges. IC Role / Device Role / Timing Role: Primary TVS on input rail, coordinated with upstream fuse and secondary filtering to limit let-through energy. Use Value: Withstands repeated 10/1000 µs transients up to 600 W without degradation, supporting 15+ year field life. |
Use Scenario: Board-level ESD protection for high-speed data lines (USB 2.0, DisplayPort) in laptops and docking stations. IC Role / Device Role / Timing Role: Low-capacitance (typ. 100 pF at 0 V) bidirectional clamp placed adjacent to connector to shunt ±15 kV contact discharge. Use Value: Maintains signal integrity with <35.5 V clamping while meeting IEC 61000-4-2 Level 4 without adding jitter or insertion loss. |
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 | Same electrical specs; halogen-free, RoHS-compliant, commercial grade (non-AEC-Q101). | Lacks automotive qualification; suitable for industrial/commercial designs not requiring AEC-Q101 validation. | Select when cost-sensitive non-automotive programs require identical clamping performance without automotive testing overhead. |
| SAC22CA | Lower peak power (400 W), smaller SOD-123FL package, higher VC/VBR ratio (~1.55). | Targeted at space-constrained consumer electronics; insufficient for 600 W industrial transients. | Choose only for compact, low-energy applications where PCB area is critical and surge levels remain below 400 W. |
Compared with SMBJ22CAHE3_B/H, the SMBJ22CA-M3/52 offers identical protection performance without automotive qualification, while SAC22CA trades power handling and clamping efficiency for footprint reduction - making SMBJ22CAHE3_B/H the optimal choice for AEC-Q101-compliant, high-energy transient environments.
Availability
SMBJ22CAHE3_B/H is available at Aetrix Electronics and suitable for industrial motor control, automotive sensor interfaces, and telecom power rail protection requiring stable component supply and long-term lifecycle assurance.
Supply support for SMBJ22CAHE3_B/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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMBJ series is engineered for high-energy transient suppression in demanding environments - targeting automotive, industrial automation, and infrastructure applications where robustness and AEC-Q101 compliance are mandatory.
FAQ
What does the "CA" suffix indicate in SMBJ22CAHE3_B/H?
The "CA" suffix denotes a bidirectional configuration, meaning SMBJ22CAHE3_B/H provides symmetrical clamping for both positive and negative transients - unlike unidirectional "A" variants that protect only one polarity. This makes SMBJ22CAHE3_B/H ideal for AC-coupled circuits, differential buses, and applications where voltage polarity cannot be assumed, such as RS-485 or sensor signal lines.
Is SMBJ22CAHE3_B/H qualified for automotive use?
Yes, SMBJ22CAHE3_B/H is AEC-Q101 qualified, as confirmed by the "HE3" suffix in its part number. This qualification validates its reliability under automotive temperature cycling, humidity, mechanical shock, and surge stress conditions - enabling use in engine control units, ADAS sensors, and body electronics where failure is not acceptable.
What is the maximum clamping voltage of SMBJ22CAHE3_B/H under surge conditions?
The maximum clamping voltage (VC) of SMBJ22CAHE3_B/H is 35.5 V at its rated peak pulse current (IPPM) of 16.9 A, tested with a 10/1000 µs waveform. This value represents the highest voltage seen across SMBJ22CAHE3_B/H during worst-case transient events and directly determines the overvoltage stress imposed on downstream components like microcontrollers or interface ICs.
How does SMBJ22CAHE3_B/H differ from unidirectional SMBJ22AHE3_B/H?
SMBJ22CAHE3_B/H is bidirectional with no cathode marking and symmetrical VBR in both directions, whereas SMBJ22AHE3_B/H is unidirectional with a cathode band and only conducts surge current from anode to cathode. SMBJ22CAHE3_B/H is used where polarity is undefined or alternating; SMBJ22AHE3_B/H suits DC power rail protection with known polarity and lower leakage at VWM.
What PCB layout considerations apply to SMBJ22CAHE3_B/H?
For optimal performance, SMBJ22CAHE3_B/H should be mounted using the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to ensure thermal dissipation and surge current handling. Short, low-inductance traces to ground or return paths are essential to minimize let-through voltage - especially critical in high-speed signal line protection where parasitic inductance degrades clamping effectiveness.
SMBJ22CAHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ22CAHE3_B/H FAQ
1.How can I place an order for SMBJ22CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ22CAHE3_B/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_B/H reliable?
The price and inventory of SMBJ22CAHE3_B/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_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ22CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ22CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ22CAHE3_B/H?
SMBJ22CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ22CAHE3_B/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_B/H?
For technical support, including SMBJ22CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ22CAHE3_B/H requirements.
6.How does Aetrix verify that SMBJ22CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ22CAHE3_B/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_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ22CAHE3_B/H?
All SMBJ22CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ22CAHE3_B/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_B/H part is unused and in its original packaging.
Return procedure for SMBJ22CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ22CAHE3_B/H Tags
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