My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMB8J22CAHE3_A/I
- Part No.:
- SMB8J22CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J22CAHE3_A/I.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,081
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMB8J22CAHE3_A/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on signal and power lines. It features a 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR), 35.5 V clamping voltage (VC) at 22.5 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMB8J22CAHE3_A/I datasheet, SMB8J22CAHE3_A/I pinout, SMB8J22CAHE3_A/I application, or SMB8J22CAHE3_A/I equivalent, key selection criteria include AEC-Q101 qualification, bidirectional clamping behavior, low leakage (<1.0 μA at VWM), MSL Level 1 moisture sensitivity, 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, responding within picoseconds to transients exceeding its VWM. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance, enabling consistent clamping performance across repeated surges.
Rated for -55 °C to +150 °C operating junction temperature, it leverages thermal resistance of 72 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), supporting reliable operation under sustained surge stress when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 24.4 V / 26.9 V at 1.0 mA test current - defines guaranteed breakdown threshold window |
| VC @ IPPM | 35.5 V at 22.5 A - clamping voltage during 10/1000 μs surge, limiting downstream voltage stress |
| PPPM | 800 W - peak pulse power handling capability with standard 10/1000 μs waveform |
| ID @ VWM | <1.0 μA - ultra-low reverse leakage preserves signal integrity in high-impedance circuits |
| TJ max | +150 °C - enables use in under-hood automotive and industrial environments |
| MSL Level | Level 1 (per J-STD-020) - supports lead-free reflow up to 260 °C peak without baking |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - symmetrical terminals suitable for AC-coupled or differential line protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals serve identical roles; bidirectional clamping occurs regardless of voltage polarity |
| Case (body) | Thermal and mechanical interface | Plastic body with UL 94 V-0 rating; requires 5.0 mm × 5.0 mm copper pads per terminal for rated power dissipation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
| Low profile SMB package | Height ≤ 2.20 mm enables compact PCB layouts and compatibility with automated pick-and-place |
| MSL Level 1 rating | Eliminates pre-bake requirement for lead-free reflow, reducing manufacturing complexity |
| 800 W surge rating (10/1000 μs) | Protects against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 transients |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN/FlexRay transceiver inputs and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed directly at connector entry point to divert surge energy before reaching sensitive analog front-ends or communication ICs. Use Value: Maintains signal fidelity under ISO 16750-2 load dump (12 V systems) and suppresses >800 W surges without degradation due to AEC-Q101 validation. |
Use Scenario: Safeguarding PLC digital input modules connected to 24 V DC field wiring exposed to relay coil flyback and lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on each channel's input node, coordinated with series current-limiting resistor to limit IPPM within device rating. Use Value: Enables robust 24 V system compliance with IEC 61000-4-5 (4 kV line-earth) using a single discrete component per channel. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Protecting Ethernet PHY magnetics secondary side and RS-485 transceiver bus lines from ESD and induced surges in network edge equipment. IC Role / Device Role / Timing Role: Fast-response bidirectional TVS placed adjacent to connector, minimizing trace inductance to ensure sub-nanosecond clamping action. Use Value: Achieves IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) and IEC 61000-4-5 (2 kV line-ground) immunity without adding capacitance-sensitive components. |
Use Scenario: Shielding microcontroller GPIOs and gate drivers from back-EMF spikes generated by brushed DC motors in smart home appliances. IC Role / Device Role / Timing Role: Localized clamp at motor driver output stage, absorbing repetitive 100–500 W switching transients during commutation. Use Value: Prevents latch-up and permanent damage to 3.3 V/5 V logic while sustaining >100,000 surge events per AEC-Q101 life test protocol. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22CAHE3_A/I | Same SMB package and VWM/VBR/VC specs, but lower PPPM (600 W vs. 800 W) and IPPM (17.3 A vs. 22.5 A) | Limited to lower-energy transients (e.g., IEC 61000-4-2 only); insufficient for full IEC 61000-4-5 Level 4 line-earth tests | Select when cost optimization is prioritized and surge threat level is confirmed ≤600 W |
| SMAJ22CAHE3_A/I | Smaller SMA (DO-214AC) package, same electrical specs but higher RθJA (110 °C/W), derating required above 75 °C ambient | Not suitable for high-power-density layouts or high-temperature enclosures without thermal derating | Choose only if board space is constrained and thermal management allows <50% power derating at TJ = 125 °C |
Compared with SMBJ22CAHE3_A/I and SMAJ22CAHE3_A/I, SMB8J22CAHE3_A/I delivers 33% higher surge power handling in the same footprint as SMBJ, while maintaining superior thermal performance versus SMAJ - making it optimal for automotive and industrial designs requiring validated 800 W immunity without layout compromise.
Availability
SMB8J22CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O modules, telecom line interfaces, and consumer appliance motor control requiring stable component supply and AEC-Q101 assurance.
Supply support for SMB8J22CAHE3_A/I 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 performance.
The SMB8JxxCA family targets high-reliability transient suppression in automotive and industrial systems, engineered to meet AEC-Q101 and deliver consistent clamping under repetitive surge stress.
FAQ
What is the clamping voltage of SMB8J22CAHE3_A/I at its rated peak pulse current?
The SMB8J22CAHE3_A/I has a maximum clamping voltage (VC) of 35.5 V when subjected to its rated peak pulse current (IPPM) of 22.5 A with a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 standards and guarantees that downstream circuitry remains below critical overvoltage thresholds during surge events. The SMB8J22CAHE3_A/I maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C).
Is SMB8J22CAHE3_A/I suitable for automotive applications?
Yes, SMB8J22CAHE3_A/I is AEC-Q101 qualified and specifically designed for automotive use, including engine control units, body electronics, and ADAS sensor interfaces. Its qualification covers temperature cycling, highly accelerated life testing (HALT), and ESD robustness per automotive requirements. The SMB8J22CAHE3_A/I also meets MSL Level 1 for lead-free reflow, supporting modern automotive manufacturing processes without baking.
How does the bidirectional configuration of SMB8J22CAHE3_A/I affect its circuit implementation?
The SMB8J22CAHE3_A/I has no polarity marking and functions identically in either orientation, making it ideal for AC-coupled lines, differential buses (e.g., RS-485), or any application where voltage polarity reversal is possible. Unlike unidirectional TVS diodes, it protects against both positive and negative transients without requiring careful orientation during placement - simplifying layout and eliminating risk of incorrect installation. This symmetry is inherent to the SMB8J22CAHE3_A/I's internal structure.
What is the maximum reverse leakage current for SMB8J22CAHE3_A/I at its stand-off voltage?
The SMB8J22CAHE3_A/I exhibits a maximum reverse leakage current (ID) of 1.0 μA when biased at its 22 V stand-off voltage (VWM) and tested at 25 °C. This ultra-low leakage preserves signal integrity in high-impedance sensor circuits and minimizes power loss in battery-operated systems. Leakage remains well below 5 μA even at elevated temperatures up to 125 °C, as verified in Vishay's thermal characterization data for the SMB8J22CAHE3_A/I.
Can SMB8J22CAHE3_A/I be used in place of SMBJ22CAHE3_A/I without layout changes?
Yes, SMB8J22CAHE3_A/I shares identical SMB (DO-214AA) package dimensions, pad layout, and pin assignment with SMBJ22CAHE3_A/I, enabling direct drop-in replacement. However, due to its higher 800 W PPPM rating (versus 600 W for SMBJ22CAHE3_A/I), thermal relief and trace routing should be verified to sustain the increased surge energy. The SMB8J22CAHE3_A/I delivers enhanced protection headroom without altering PCB design.
SMB8J22CAHE3_A/I 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):
- 22.5A
- Power - Peak Pulse:
- 800W
- 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 (SMB)
SMB8J22CAHE3_A/I FAQ
1.How can I place an order for SMB8J22CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J22CAHE3_A/I 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 SMB8J22CAHE3_A/I reliable?
The price and inventory of SMB8J22CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J22CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMB8J22CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J22CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J22CAHE3_A/I?
SMB8J22CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J22CAHE3_A/I 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 SMB8J22CAHE3_A/I?
For technical support, including SMB8J22CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J22CAHE3_A/I requirements.
6.How does Aetrix verify that SMB8J22CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMB8J22CAHE3_A/I 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 SMB8J22CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMB8J22CAHE3_A/I?
All SMB8J22CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J22CAHE3_A/I, 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 SMB8J22CAHE3_A/I part is unused and in its original packaging.
Return procedure for SMB8J22CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J22CAHE3_A/I 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 …
