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Vishay General Semiconductor - Diodes Division SMBG22CAHE3/5B
- Part No.:
- SMBG22CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG22CAHE3/5B.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO215AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBG22CAHE3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for clamping ESD and surge transients on signal/power lines. It features 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 μs), <1.0 μA reverse leakage at VWM, and 35.5 V maximum clamping voltage (VC) at 16.9 A peak pulse current - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMBG22CAHE3/5B datasheet, SMBG22CAHE3/5B pinout, SMBG22CAHE3/5B application, or SMBG22CAHE3/5B equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification, 150 °C junction temperature rating, low capacitance (<100 pF at 1 MHz), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal bias it presents high impedance (>1 MΩ), but triggers into low-impedance conduction when transient voltage exceeds VBR, diverting surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown and low leakage across -55 °C to +150 °C operating range.
The SMBG22CAHE3/5B implements a symmetrical Zener-based structure enabling identical forward and reverse breakdown behavior - critical for protecting AC-coupled or differential signal paths like CAN FD, LIN, or RS-485 where polarity reversal occurs. It meets JESD201 Class 2 whisker resistance and UL 497B recognition (QVGQ2).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 24 V nominal systems. |
| VBR (min/max) | 24.4 V / 26.9 V at 1 mA - Confirmed breakdown threshold range; ensures reliable triggering without premature conduction during normal operation. |
| VC @ IPPM | 35.5 V at 16.9 A - Clamped voltage during 600 W surge; limits stress on protected ICs such as microcontrollers or transceivers. |
| PPPM | 600 W (10/1000 μs waveform) - Peak transient energy handling capacity; supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity. |
| ID @ VWM | <1.0 μA - Ultra-low leakage at rated stand-off voltage; preserves signal integrity and battery life in always-on circuits. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments and high-power industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per AEC standard. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, gull-wing leadform, matte tin-plated terminals solderable per J-STD-002/JESD22-B102; meets UL 94 V-0 flammability rating and MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | One terminal of symmetrical bidirectional structure; no polarity marking required on device body. |
| Cathode | Current exit point in forward bias | Second terminal of symmetrical bidirectional structure; electrically identical to anode under reverse bias. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Identical VBR and VC in both directions - eliminates need for polarity-aware layout in differential or AC signal lines. |
| AEC-Q101 qualification | Validated for automotive electronics including engine control modules and ADAS sensor interfaces requiring long-term field reliability. |
| 600 W peak pulse power | Handles repetitive 10/1000 μs surges up to 0.01% duty cycle - sufficient for load dump and inductive switching events in 24 V systems. |
| Low incremental surge resistance | Ensures minimal VC overshoot during fast-rising transients (<1 ns response time), improving protection margin for sensitive CMOS inputs. |
| Glass passivated junction | Provides stable electrical parameters over lifetime and environmental stress, reducing parameter drift in humid or thermally cycled applications. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting ABS wheel speed sensors and ambient temperature sensors from ISO 7637-2 pulse 1/2a/5a transients and ESD events in vehicle chassis. IC Role / Device Role / Timing Role: Shunt TVS placed between signal line and ground, clamping transients before they reach analog front-end or signal conditioner ICs. Use Value: Maintains signal fidelity below 22 V while limiting clamped voltage to ≤35.5 V - within absolute maximum ratings of typical automotive-grade op-amps and ADCs. | Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., SN65HVD230) on factory floor networks exposed to motor drive noise and lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional clamp across A/B differential pair, referenced to local ground, absorbing common-mode surges without disrupting DC bias. Use Value: Symmetrical clamping prevents data corruption during polarity reversals; 35.5 V clamping protects transceiver outputs rated to ±15 V common-mode range. |
| Consumer USB-C Port Protection | Telecom DSL Line Interface |
Use Scenario: Secondary-level surge suppression on USB-C CC and VCONN lines in docking stations subjected to human-body-model (HBM) ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector, shunting ESD pulses before reaching USB PD controller or level translators. Use Value: Sub-100 pF junction capacitance avoids signal integrity degradation on 5 Gbps SuperSpeed lanes; AEC-Q101 grade ensures robustness beyond consumer requirements. | Use Scenario: Protecting ADSL/VDSL line drivers and receivers from induced surges on twisted-pair telephone lines entering building premises. IC Role / Device Role / Timing Role: Bidirectional clamp across tip/ring pair, grounded via MOV or gas discharge tube secondary stage, handling longitudinal surges up to 600 W. Use Value: 22 V VWM allows safe operation during normal line voltage swings (±135 V DC + AC); 35.5 V clamping prevents latch-up in line interface ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22CAHE3/5B | Same VWM/VBR/VC, but lower PPPM = 600 W (same rating) and identical SMB (DO-214AA) package - differs only in outline dimensions (SMBG vs SMB). | SMBG has tighter thermal resistance (RθJL = 20 °C/W vs SMB's 25 °C/W) and higher current density capability due to larger copper pad area support. | Select SMBG22CAHE3/5B when board layout accommodates DO-215AA footprint and higher thermal performance is required for sustained surge duty cycles. |
| SMCJ22CAHE3/5B | Higher PPPM = 1500 W, same VWM/VBR, but larger SMC (DO-214AB) package - physically incompatible with SMBG land pattern. | Used where system-level surge testing requires >600 W headroom (e.g., telecom central office equipment), not suitable for space-constrained automotive modules. | Choose SMBG22CAHE3/5B for compact 24 V automotive or industrial I/O designs where 600 W suffices and PCB real estate is limited. |
Compared with SMBJ22CAHE3/5B, SMBG22CAHE3/5B offers superior thermal dissipation in same functional class; versus SMCJ22CAHE3/5B, it trades peak power for smaller footprint and faster response - optimal for cost-sensitive, space-constrained AEC-Q101 applications.
Availability
SMBG22CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, and consumer USB-C port protection requiring stable component supply, AEC-Q101 compliance, and consistent surge immunity performance across production batches.
Supply support for SMBG22CAHE3/5B 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, efficiency, and application-specific optimization.
The SMBG series was engineered for high-reliability surface-mount transient suppression in automotive and industrial environments, combining AEC-Q101 qualification, low-profile packaging, and precise bidirectional clamping for modern signal integrity-critical systems.
FAQ
What is the maximum clamping voltage of the SMBG22CAHE3/5B under a 600 W surge?
The SMBG22CAHE3/5B exhibits a maximum clamping voltage (VC) of 35.5 V at its rated peak pulse current of 16.9 A, corresponding to the standardized 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88456 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The SMBG22CAHE3/5B maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C).
Is the SMBG22CAHE3/5B suitable for bidirectional signal lines like CAN or RS-485?
Yes, the SMBG22CAHE3/5B is explicitly designed for bidirectional applications, as indicated by the "CA" suffix and confirmed in Vishay's documentation. Its symmetrical breakdown and clamping characteristics ensure identical VBR (24.4–26.9 V) and VC (35.5 V) in both polarities - making it ideal for protecting differential buses such as CAN FD, LIN, and RS-485 where signal polarity alternates. No external polarity configuration is needed.
Does the SMBG22CAHE3/5B meet automotive qualification standards?
Yes, the SMBG22CAHE3/5B carries the "HE3" suffix denoting AEC-Q101 qualification, verified per Vishay's ordering information table and mechanical data section. It undergoes stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD robustness validation to ensure reliability in automotive under-hood and cabin environments. This qualification applies specifically to the SMBG22CAHE3/5B variant, not generic family members.
What is the thermal resistance of the SMBG22CAHE3/5B, and how does it affect layout?
The SMBG22CAHE3/5B has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W, per Vishay's Thermal Characteristics table. This low value enables efficient heat transfer from the die to PCB copper through the leads. For optimal thermal performance, Vishay specifies mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal - underscoring that proper pad sizing directly impacts sustained surge handling and long-term reliability of the SMBG22CAHE3/5B.
How does the SMBG22CAHE3/5B differ from unidirectional variants like SMBG22AHE3/5B?
The SMBG22CAHE3/5B is bidirectional with symmetrical clamping, whereas SMBG22AHE3/5B is unidirectional and features a cathode band marking. Electrically, SMBG22AHE3/5B conducts only in reverse bias and blocks forward current, while SMBG22CAHE3/5B clamps equally in both directions. Key differences include absence of polarity marking on SMBG22CAHE3/5B and doubled reverse leakage limit (per note 3) for VWM ≤10 V - though irrelevant for the 22 V SMBG22CAHE3/5B.
SMBG22CAHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AA, SMB Gull Wing
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG22CAHE3/5B FAQ
1.How can I place an order for SMBG22CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG22CAHE3/5B 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 SMBG22CAHE3/5B reliable?
The price and inventory of SMBG22CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG22CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG22CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG22CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG22CAHE3/5B?
SMBG22CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG22CAHE3/5B 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 SMBG22CAHE3/5B?
For technical support, including SMBG22CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG22CAHE3/5B requirements.
6.How does Aetrix verify that SMBG22CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG22CAHE3/5B 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 SMBG22CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG22CAHE3/5B?
All SMBG22CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG22CAHE3/5B, 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 SMBG22CAHE3/5B part is unused and in its original packaging.
Return procedure for SMBG22CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG22CAHE3/5B Tags
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