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Vishay General Semiconductor - Diodes Division SMB8J22CA-E3/52
- Part No.:
- SMB8J22CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J22CA-E3/52.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,053
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Product details
Overview
SMB8J22CA-E3/52 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 standoff voltage (VWM), 24.4–26.9 V breakdown voltage (VBR) at 1 mA, 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 SMB8J22CA-E3/52 datasheet, SMB8J22CA-E3/52 pinout, SMB8J22CA-E3/52 application, or SMB8J22CA-E3/52 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low leakage (<1 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 crowbar during transients, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response time and low incremental surge resistance. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints.
Thermal performance is defined by RθJA = 72 °C/W and RθJL = 20 °C/W, supporting operation from –55 °C to +150 °C junction temperature. The SMB (DO-214AA) package meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 24.4 V / 26.9 V at 1 mA - ensures reliable triggering across process variation and temperature |
| VC @ IPPM | 35.5 V at 22.5 A - limits downstream voltage stress during 10/1000 µs surge events |
| PPPM | 800 W - sustains high-energy transients per IEEE C62.35 standard without failure |
| ID @ VWM | <1 µA - negligible standby power loss and signal integrity impact in high-impedance circuits |
| TJ max | +150 °C - supports under-hood automotive and industrial ambient environments |
| MSL Level | Level 1 (260 °C peak reflow) - compatible with standard lead-free SMT assembly processes |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; clamps voltage above ±35.5 V in either direction |
| Case (body) | Thermal and mechanical interface | Plastic body transfers heat to PCB copper pads; requires 5.0 mm × 5.0 mm pad per terminal per datasheet fig. 2 |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
| AEC-Q101 qualification | Validated reliability for automotive ECUs, ADAS sensors, and infotainment power rails |
| Low profile SMB package | Height ≤ 2.20 mm enables use in space-constrained modules and stacked PCB assemblies |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and JESD 22-B102, eliminating post-reflow oxidation issues |
| UL 94 V-0 molding compound | Prevents flame propagation in safety-critical systems such as battery management and motor control |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load-dump and ESD events in engine control units. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential bus lines to clamp surges before they reach transceiver inputs. Use Value: Maintains signal integrity below 35.5 V clamping threshold while surviving 800 W pulses - critical for ISO 16750-2 compliance. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers against field-wiring transients. IC Role / Device Role / Timing Role: Standoff-rated TVS on each channel input to absorb inductive kickback from solenoid/relay coils. Use Value: 22 V VWM allows full utilization of 24 V nominal supply range; <1 µA leakage avoids false triggering in high-impedance sensing circuits. |
| Telecom Line Interface | Consumer Appliance Motor Control |
|
Use Scenario: Shielding RS-485 transceivers in base station backhaul equipment from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary-level TVS mounted at connector entry point to shunt energy before it propagates into signal conditioning circuitry. Use Value: 800 W PPPM rating handles multi-kA induced currents; bidirectional symmetry eliminates need for polarity-aware layout. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Across-motor terminals to clamp flyback voltage during PWM switching transitions. Use Value: 150 °C TJ max enables direct mounting near hot motor drivers; MSL Level 1 ensures robustness through reflow and thermal cycling. |
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 | Same VWM/VBR/VC specs but rated for 600 W PPPM (vs. 800 W); lower IPPM (17.3 A) | Limited to lower-energy transients; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification or surge margin requirements |
| SMCJ22CA-E3/52 | Same electrical specs but in larger SMC (DO-214AB) package; higher PPPM (1500 W), RθJA = 35 °C/W | Better thermal dissipation but occupies ~2.5× PCB area; requires larger pad layout | Choose when system-level surge testing exceeds 800 W or board space permits larger footprint |
Compared with SMBJ22CA-E3/52 and SMCJ22CA-E3/52, the SMB8J22CA-E3/52 delivers optimal balance of automotive-grade reliability, 800 W surge capacity, and compact SMB footprint - making it preferred for space-constrained AEC-Q101 designs where thermal budget is managed via 5 mm² copper pads.
Availability
SMB8J22CA-E3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer appliance motor control requiring stable component supply and AEC-Q101 assurance.
Supply support for SMB8J22CA-E3/52 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 performance.
The SMB8J series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density, AEC-Q101-compliant transient suppression in harsh automotive and industrial environments.
FAQ
What is the clamping voltage of SMB8J22CA-E3/52 at its rated peak pulse current?
The SMB8J22CA-E3/52 has a maximum clamping voltage (VC) of 35.5 V at 22.5 A peak pulse current (IPPM), measured under the standardized 10/1000 µs double-exponential waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is confirmed in the "Bidirectional" section of Vishay document 88422, revision 09-Jan-2024.
Is SMB8J22CA-E3/52 qualified for automotive applications?
Yes, SMB8J22CA-E3/52 is AEC-Q101 qualified, as explicitly stated in the "FEATURES" section and "Notes" column of the Vishay datasheet (document 88422). The HE3/HM3 suffix variants are designated for automotive use, and SMB8J22CA-E3/52 carries the commercial-grade E3 suffix but shares identical die and qualification testing with AEC-Q101 versions per Vishay's material categorization policy.
What is the standoff voltage (VWM) and why does it matter for SMB8J22CA-E3/52?
The standoff voltage (VWM) of SMB8J22CA-E3/52 is 22 V - the maximum DC or continuous reverse voltage the device tolerates without entering avalanche conduction. This parameter ensures normal circuit operation remains undisturbed while guaranteeing fast response when transients exceed this threshold. It directly determines compatibility with 24 V systems and must be selected ≥10–15% below the protected IC's absolute maximum rating.
Does SMB8J22CA-E3/52 have polarity markings, and how is it mounted?
No, SMB8J22CA-E3/52 is a bidirectional TVS and carries no cathode band or polarity marking - both terminals are functionally identical. Mounting requires symmetric 5.0 mm × 5.0 mm copper pads per terminal (per datasheet fig. 2), with no orientation dependency. The SMB (DO-214AA) package uses matte tin-plated leads compliant with J-STD-002 solderability standards.
What is the peak pulse power rating and test condition for SMB8J22CA-E3/52?
SMB8J22CA-E3/52 is rated for 800 W peak pulse power (PPPM) under the 10/1000 µs waveform defined by ANSI/IEEE C62.35. This rating applies to bidirectional operation and is derated linearly above 25 °C ambient per Figure 2 in Vishay document 88422. The value reflects single-pulse survivability, not repetitive duty-cycle capability.
SMB8J22CA-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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):
- 22.5A
- Power - Peak Pulse:
- 800W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB8J22CA-E3/52 FAQ
1.How can I place an order for SMB8J22CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J22CA-E3/52 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 SMB8J22CA-E3/52 reliable?
The price and inventory of SMB8J22CA-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J22CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SMB8J22CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J22CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J22CA-E3/52?
SMB8J22CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J22CA-E3/52 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 SMB8J22CA-E3/52?
For technical support, including SMB8J22CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J22CA-E3/52 requirements.
6.How does Aetrix verify that SMB8J22CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMB8J22CA-E3/52 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 SMB8J22CA-E3/52 meets industry standards.
7.What is the process for return or replacement of SMB8J22CA-E3/52?
All SMB8J22CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J22CA-E3/52, 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 SMB8J22CA-E3/52 part is unused and in its original packaging.
Return procedure for SMB8J22CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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