My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ22CAHE3/52
;;2.jpg)
- Part No.:
- SMBJ22CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ22CAHE3/52.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,193
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ22CAHE3/52 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 and power lines. It features a 22 V stand-off voltage (VWM), 35.5 V maximum clamping voltage at 16.9 A peak pulse current (IPPM), and 600 W peak pulse power capability with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMBJ22CAHE3/52 datasheet, SMBJ22CAHE3/52 pinout, SMBJ22CAHE3/52 application, or SMBJ22CAHE3/52 equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), and compliance with UL 497B for telecom and automotive surge protection standards.
Technical Context
This device operates as a voltage-clamped crowbar during transient events, leveraging an avalanche breakdown mechanism to limit reverse voltage across protected circuits. Its bidirectional structure enables symmetrical clamping in both polarities without external polarity management, supporting AC-coupled lines and differential signaling paths.
Designed for high-reliability environments, SMBJ22CAHE3/52 incorporates glass-passivated junction technology, meets MSL Level 1 per J-STD-020, and sustains 150 °C maximum junction temperature. It delivers stable clamping performance under repetitive 0.01% duty-cycle surges and maintains low incremental surge resistance for consistent energy absorption.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 22 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min / max (Breakdown Voltage) | 24.4 V / 26.9 V at 1 mA - Ensures reliable turn-on margin above VWM for noise immunity |
| VC (Clamping Voltage) | 35.5 V at IPPM = 16.9 A - Defines worst-case voltage seen by downstream circuitry during surge |
| PPPM (Peak Pulse Power) | 600 W with 10/1000 µs waveform - Supports IEC 61000-4-5 Level 4 surge immunity testing |
| RθJA | 100 °C/W - Requires minimal PCB copper area (0.2" × 0.2") for thermal management |
| TJ max | 150 °C - Enables operation in under-hood automotive and industrial ambient conditions |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics per stress test 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 compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; clamping node in negative transient | Connected to line being protected; forms symmetrical conduction path with cathode |
| Cathode | Current exit terminal in forward bias; clamping node in positive transient | Paired with anode to enable bidirectional voltage limiting without external components |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, RS-485 buses, and ungrounded sensor outputs without polarity concerns |
| 600 W peak pulse power | Withstands 10/1000 µs surges up to 16.9 A - sufficient for IEC 61000-4-5 4 kV open-circuit tests |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, mechanical shock, and humidity testing |
| UL 497B recognition | Approved for telecom and data line protector classification (QVGQ2, E136766), enabling certified system-level compliance |
| MSL Level 1 rating | Allows unlimited floor life and reflow at peak 260 °C - compatible with standard SMT assembly processes |
Applications
| Automotive Sensor Interface | Industrial RS-485 Bus |
|---|---|
Use Scenario: Protecting CAN/LIN bus nodes and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector entry point. Use Value: Limits induced transients to ≤35.5 V, preserving integrity of 3.3 V/5 V microcontrollers and analog front-ends without derating margins. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., SN65HVD230) against ESD and lightning-induced surges in factory automation networks. IC Role / Device Role / Timing Role: Line-side transient suppressor on A/B differential pair, mounted before ESD diode array. Use Value: Maintains signal integrity under 10/1000 µs surges up to 4 kV while adding <1 pF parasitic capacitance at 0 V bias. |
| Telecom DSL Line Protection | Consumer Appliance Motor Control |
Use Scenario: Shielding ADSL/VDSL line drivers and splitters from induced surges on twisted-pair telephone lines per ITU-T K.21. IC Role / Device Role / Timing Role: Primary surge clamp on line side of hybrid transformer, coordinated with gas discharge tube (GDT). Use Value: Responds in <1 ns to clamp transients before GDT fires, reducing let-through energy to <10 mJ. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Flyback suppression diode across motor terminals, replacing slower MOVs in compact designs. Use Value: Absorbs 600 W peak energy without degradation over >10⁵ surge cycles, extending system lifetime vs. polymer-based alternatives. |
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; identical electrical specs and AEC-Q101 qualification | No functional difference; selected where halogen-free material compliance is mandated | Choose when environmental compliance requires halogen-free packaging without sacrificing performance |
| SMCJ22CAHE3/52 | Same VWM/VBR/VC specs but in larger SMC (DO-214AB) package; higher RθJA (50 °C/W) and 1500 W PPPM rating | Used where higher surge energy handling (>1500 W) or improved thermal dissipation is required | Select when system-level surge testing exceeds 600 W or board layout allows larger footprint |
Compared with SMBJ22CAHE3/52, SMBJ22CA-M3/52 offers identical protection performance with halogen-free construction, while SMCJ22CAHE3/52 trades smaller size for 2.5× higher surge power handling and lower thermal resistance - enabling robustness upgrades without redesigning clamping topology.
Availability
SMBJ22CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial communication interfaces, and telecom line cards requiring stable component supply with AEC-Q101 validation and UL recognition.
Supply support for SMBJ22CAHE3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific optimization.
The SMBJ series targets high-volume transient protection in space-constrained, thermally demanding applications - engineered for automotive, industrial, and telecom systems needing repeatable clamping performance and regulatory certification.
FAQ
What is the clamping voltage of SMBJ22CAHE3/52 at its rated peak pulse current?
The SMBJ22CAHE3/52 has a maximum clamping voltage (VC) of 35.5 V at its specified peak pulse current (IPPM) of 16.9 A with a 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is measured under standardized test conditions per ANSI/IEEE C62.35. The SMBJ22CAHE3/52 maintains this clamping performance across its full operating temperature range.
Is SMBJ22CAHE3/52 suitable for automotive applications?
Yes, SMBJ22CAHE3/52 is AEC-Q101 qualified and explicitly listed in Vishay's automotive ordering codes (HE3 suffix). It undergoes stress testing for temperature cycling, mechanical shock, and humidity, making it suitable for engine control units, body electronics, and ADAS sensor interfaces. Its bidirectional architecture supports CAN FD and LIN bus protection without polarity constraints.
How does the SMBJ22CAHE3/52 differ from unidirectional variants like SMBJ22AHE3/52?
The SMBJ22CAHE3/52 is bidirectional, providing symmetrical clamping for both positive and negative transients, whereas SMBJ22AHE3/52 is unidirectional and only clamps in reverse bias. The "CA" suffix indicates bidirectional functionality with identical VWM (22 V) and VC (35.5 V), but SMBJ22AHE3/52 adds forward voltage drop (VF ≤ 3.5 V at 50 A) and supports IFSM = 100 A - relevant only in DC power rail applications.
What is the thermal resistance and recommended PCB layout for SMBJ22CAHE3/52?
SMBJ22CAHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. No thermal vias or heatsinking is required for standard surge duty cycles, but increasing pad area improves power derating above 25 °C ambient. The SMBJ22CAHE3/52 package (DO-214AA) uses standard SMT reflow profiles with peak temperature up to 260 °C.
Does SMBJ22CAHE3/52 meet UL safety standards?
Yes, SMBJ22CAHE3/52 carries Underwriters Laboratories recognition under UL 497B (file E136766) for both unidirectional and bidirectional protectors. This certification validates its suitability in telecom, data line, and industrial equipment requiring third-party safety approval. The device also complies with RoHS Directive 2011/65/EU and meets J-STD-020 MSL Level 1 moisture sensitivity requirements.
SMBJ22CAHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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)
SMBJ22CAHE3/52 FAQ
1.How can I place an order for SMBJ22CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ22CAHE3/52 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 SMBJ22CAHE3/52 reliable?
The price and inventory of SMBJ22CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ22CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ22CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ22CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ22CAHE3/52?
SMBJ22CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ22CAHE3/52 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 SMBJ22CAHE3/52?
For technical support, including SMBJ22CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ22CAHE3/52 requirements.
6.How does Aetrix verify that SMBJ22CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ22CAHE3/52 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 SMBJ22CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ22CAHE3/52?
All SMBJ22CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ22CAHE3/52, 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 SMBJ22CAHE3/52 part is unused and in its original packaging.
Return procedure for SMBJ22CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ22CAHE3/52 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
