My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMB8J22C-E3/52
- Part No.:
- SMB8J22C-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J22C-E3/52.pdf
- Description:
- TVS DIODE 22VWM 39.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,975
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMB8J22C-E3/52 from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy surge protection on signal and power lines. It features 22 V stand-off voltage (VWM), 35.5 V maximum clamping voltage at 22.5 A peak pulse current, and 800 W peak pulse power rating with 10/1000 µs waveform. Used in automotive sensor interfaces and industrial I/O protection where bidirectional transients occur.
For engineers reviewing the SMB8J22C-E3/52 datasheet, SMB8J22C-E3/52 pinout, SMB8J22C-E3/52 application, or SMB8J22C-E3/52 equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, low leakage (<1 µA at 22 V), thermal resistance (RθJA = 72 °C/W), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamped shunt protector, responding within <1 ps to ESD and lightning-induced transients. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance, while the bi-directional configuration enables symmetric suppression of positive and negative polarity surges without external polarity management.
Designed for surface-mount implementation on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, it meets MSL Level 1 per J-STD-020 with 260 °C reflow peak temperature tolerance and supports operating junction temperatures from –55 °C to +150 °C.
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 - Breakdown voltage range at 1 mA test current; ensures reliable turn-on across process variation. |
| VC @ IPPM | 35.5 V at 22.5 A - Clamping voltage under 10/1000 µs surge; determines protected circuit's maximum transient exposure. |
| PPPM | 800 W - Peak pulse power handling with 10/1000 µs waveform; quantifies single-event surge energy absorption capacity. |
| ID @ VWM | <1 µA - Reverse leakage at rated stand-off voltage; critical for low-power sensor and battery-backed circuits. |
| RθJA | 72 °C/W - Junction-to-ambient thermal resistance; informs derating requirements above 25 °C ambient. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness. |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode band marking omitted for bi-directional types; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional surge path | No polarity distinction - either terminal serves as anode or cathode depending on transient polarity; no color band marking. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC-coupled or floating signal lines without external polarity routing. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS sensor interfaces requiring extended lifetime and stress resilience. |
| Low-profile DO-214AA package | 0.220" × 0.155" footprint with 0.085" height - fits dense PCB layouts and supports high-speed automated placement. |
| Glass-passivated junction | Improves long-term stability of VBR and leakage performance under thermal cycling and humidity exposure. |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow profile use without dry-pack or baking preconditioning. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor inputs (e.g., pressure, temperature) in engine control units and ADAS modules from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt-based transient voltage clamp placed directly at connector entry point or IC input pins. Use Value: Limits induced surge voltages to ≤35.5 V during 22.5 A transients, preserving downstream signal conditioning ICs and microcontroller GPIO integrity. |
Use Scenario: Safeguarding RS-485, 4–20 mA loop, or digital input terminals in PLCs and motor drives against EFT and surge events per IEC 61000-4-4/5. IC Role / Device Role / Timing Role: Primary line-level surge absorber mounted adjacent to interface connectors with minimal trace inductance. Use Value: Absorbs up to 800 W of transient energy without degradation, maintaining system uptime in harsh factory environments. |
| Consumer Power Adapter Input | Telecom Line Card Protection |
Use Scenario: Secondary-side DC bus protection in USB-C PD adapters and wireless charging systems exposed to capacitive discharge and coupling noise. IC Role / Device Role / Timing Role: Fast-response clamp between VBUS and GND to prevent overvoltage damage to buck controllers and GaN FETs. Use Value: Sub-nanosecond response and 1 µA leakage at 22 V minimize standby power loss while ensuring fast clamping. |
Use Scenario: Overvoltage protection on Ethernet PHY power rails and auxiliary bias supplies in base station line cards and ONU equipment. IC Role / Device Role / Timing Role: Bi-directional rail clamp on isolated DC-DC outputs subject to cross-talk and lightning-induced common-mode surges. Use Value: Symmetric clamping eliminates need for dual unidirectional devices, reducing BOM count and board area by 50%. |
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-E3/52 | Same DO-214AA package and bi-directional configuration; identical VWM (22 V), but lower PPPM (600 W vs. 800 W) and higher VC (37.5 V vs. 35.5 V). | Less suitable for high-energy 800 W surge events; acceptable for IEC 61000-4-5 Level 3 (1 kV/42 Ω) but marginal for Level 4. | Select SMBJ22CA-E3/52 only when cost sensitivity outweighs peak power margin and clamping voltage tightness. |
| SMAJ22CA-E3/52 | Smaller DO-214AC (SMA) package; same VWM and polarity, but reduced PPPM (400 W) and higher RθJA (110 °C/W), limiting thermal performance. | Not recommended for sustained surge duty cycles or high ambient temperature environments (>85 °C). | Choose SMAJ22CA-E3/52 only for space-constrained consumer designs with lower surge threat profiles. |
Compared with SMBJ22CA-E3/52 and SMAJ22CA-E3/52, SMB8J22C-E3/52 delivers superior energy handling (800 W), tighter clamping (35.5 V), and lower thermal resistance (72 °C/W), making it the preferred choice for automotive and industrial applications demanding robust, thermally stable TVS performance.
Availability
SMB8J22C-E3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, and telecom line card designs requiring stable component supply and AEC-Q101-compliant surge immunity.
Supply support for SMB8J22C-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 optimization.
The SMB8J series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-power-density, AEC-Q101-qualified transient suppression in automotive and industrial systems where compact size and repeatable clamping performance are critical.
FAQ
What is the clamping voltage of SMB8J22C-E3/52 under a 10/1000 µs surge?
The SMB8J22C-E3/52 exhibits a maximum clamping voltage (VC) of 35.5 V when subjected to its rated peak pulse current of 22.5 A with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events. The SMB8J22C-E3/52 maintains this clamping performance across its full operating temperature range.
Is SMB8J22C-E3/52 suitable for automotive applications?
Yes, SMB8J22C-E3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including engine control, body electronics, and ADAS sensor interfaces. Its construction includes glass-passivated junctions, MSL Level 1 moisture sensitivity, and operation from –55 °C to +150 °C junction temperature - all validated per automotive reliability test standards. The SMB8J22C-E3/52 meets these requirements without derating.
How does the bi-directional configuration of SMB8J22C-E3/52 affect PCB layout?
The SMB8J22C-E3/52 has no polarity marking (no cathode band) due to its bi-directional design, eliminating orientation constraints during placement. This simplifies PCB layout by allowing rotation-independent mounting and enabling protection of AC-coupled or floating nodes without additional diodes or routing complexity. The SMB8J22C-E3/52 requires only two symmetric pads matching the DO-214AA outline.
What is the maximum reverse leakage current for SMB8J22C-E3/52 at its rated stand-off voltage?
At its 22 V stand-off voltage (VWM) and 25 °C ambient temperature, the SMB8J22C-E3/52 guarantees a maximum reverse leakage current (ID) of 1 µA. This low leakage preserves signal integrity in high-impedance sensor paths and minimizes quiescent power loss in battery-powered systems. The SMB8J22C-E3/52 maintains leakage below 5 µA even at 125 °C junction temperature.
Does SMB8J22C-E3/52 require special handling or baking prior to reflow soldering?
No - SMB8J22C-E3/52 is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and may be processed using standard lead-free reflow profiles with a peak temperature of 260 °C without preconditioning. The SMB8J22C-E3/52's matte tin-plated leads comply with J-STD-002 and JESD 22-B102, ensuring robust solder joint formation without oxidation concerns.
SMB8J22C-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 39.4V
- Current - Peak Pulse (10/1000µs):
- 20.3A
- 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)
SMB8J22C-E3/52 FAQ
1.How can I place an order for SMB8J22C-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J22C-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 SMB8J22C-E3/52 reliable?
The price and inventory of SMB8J22C-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 SMB8J22C-E3/52 is usually 5 days.
3.What payment methods are accepted for SMB8J22C-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J22C-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J22C-E3/52?
SMB8J22C-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J22C-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 SMB8J22C-E3/52?
For technical support, including SMB8J22C-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J22C-E3/52 requirements.
6.How does Aetrix verify that SMB8J22C-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMB8J22C-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 SMB8J22C-E3/52 meets industry standards.
7.What is the process for return or replacement of SMB8J22C-E3/52?
All SMB8J22C-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J22C-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 SMB8J22C-E3/52 part is unused and in its original packaging.
Return procedure for SMB8J22C-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J22C-E3/52 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 …
