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Vishay General Semiconductor - Diodes Division SMBJ22CHE3/5B
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- Part No.:
- SMBJ22CHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ22CHE3/5B.pdf
- Description:
- TVS DIODE 22VWM 39.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,642
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Product details
Overview
SMBJ22CHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping fast-rising ESD and surge transients on power and signal lines. It features a 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR) at 1 mA, 35.5 V maximum clamping voltage (VC) at 16.9 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and automotive control modules.
For engineers reviewing the SMBJ22CHE3/5B datasheet, SMBJ22CHE3/5B pinout, SMBJ22CHE3/5B application, or SMBJ22CHE3/5B equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (−55 to +150 °C), and RoHS-compliant packaging configuration for production-grade surge protection design.
Technical Context
This TVS diode operates as a unidirectional clamping device: reverse-biased during normal operation, it remains high-impedance until transient voltage exceeds VWM (22 V), then avalanches rapidly to limit voltage across protected circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM).
Engineered for automotive-grade reliability, SMBJ22CHE3/5B meets AEC-Q101 stress test requirements and is rated for repetitive 600 W surges (10/1000 µs, 0.01% duty cycle) with low incremental surge resistance and <1 ns response time - enabling robust protection against inductive switching spikes and ISO 7637-2 load dump transients in 24 V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 24 V nominal systems. |
| VBR (min/max) | 24.4 V / 26.9 V at IT = 1 mA - Confirmed breakdown threshold range ensuring consistent avalanche initiation under surge conditions. |
| VC @ IPPM | 35.5 V at 16.9 A - Clamped voltage during 600 W transient; limits downstream IC stress below 36 V absolute maximum ratings. |
| PPPM | 600 W - Peak pulse power handling per 10/1000 µs waveform; supports repeated surge events in industrial motor drives. |
| IFSM | 100 A - Non-repetitive forward surge current rating (8.3 ms half-sine); enables compatibility with high-energy inrush scenarios. |
| TJ range | −55 °C to +150 °C - Full automotive-grade junction temperature range; validated for under-hood and engine-control module environments. |
| RθJA | 100 °C/W - Thermal resistance junction-to-ambient on standard 0.2" × 0.2" copper pads; informs PCB thermal layout for sustained power dissipation. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return plane; completes clamping loop during transient events. |
| Cathode | Reverse-biased input / Protected line connection | Connected to line being protected (e.g., 24 V rail or sensor output); conducts avalanche current when VIN > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements - enables use in ADAS ECUs and body control modules without requalification. |
| 600 W peak pulse power | Handles high-energy transients per ISO 7637-2 Pulse 5a (load dump) without degradation - critical for 24 V commercial vehicle systems. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage exposure during clamping - reduces risk of latch-up or gate oxide damage in protected MOSFETs and microcontrollers. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles - eliminates moisture sensitivity concerns during SMT assembly. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<1 µA) over temperature and lifetime - improves long-term reliability in harsh environments. |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply rails in body control modules against load dump transients up to 60 V. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery feed and LDO input. Use Value: Limits voltage to ≤35.5 V during 16.9 A surge, preventing regulator overvoltage failure and maintaining system uptime. |
Use Scenario: Shielding analog outputs of pressure sensors in hydraulic control units from ESD and cable discharge events. IC Role / Device Role / Timing Role: Signal-line TVS connected between sensor output and ADC input, referenced to local ground. Use Value: Sub-1 ns response clamps ±8 kV contact ESD (IEC 61000-4-2) to safe levels before signal integrity degrades. |
| Motor Drive Gate Driver Protection | Telecom DC Power Input Stage |
|
Use Scenario: Safeguarding high-side gate drivers in 48 V BLDC inverters from inductive kickback during PWM switching. IC Role / Device Role / Timing Role: TVS placed across driver supply pins (VDD–GND) to absorb flyback energy. Use Value: 600 W rating absorbs repetitive 10/1000 µs spikes without thermal runaway, extending driver IC lifetime. |
Use Scenario: Front-end surge suppression on −48 V telecom rectifier outputs exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS installed between −48 V bus and chassis ground. Use Value: 22 V VWM provides margin above nominal −48 V while clamping to 35.5 V - compatible with telecom equipment safety margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22AHE3/5B | No AEC-Q101 qualification; identical electrical specs and package. | Restricted to commercial/industrial use; not approved for automotive OEM designs. | Select SMBJ22AHE3/5B only when automotive qualification is unnecessary and cost optimization is prioritized. |
| SMAJ22AHE3/A | Lower 400 W PPPM; SMA (DO-214AC) package with smaller footprint and higher RθJA (140 °C/W). | Limited to lower-energy transients; requires tighter thermal management on PCB. | Choose SMAJ22AHE3/A only for space-constrained consumer applications where 400 W surge capacity suffices. |
Compared with SMBJ22AHE3/5B and SMAJ22AHE3/A, SMBJ22CHE3/5B uniquely combines AEC-Q101 qualification, 600 W surge capability, and SMB package thermal performance - making it the sole option qualified for automotive power rail protection requiring full ISO 7637-2 compliance.
Availability
SMBJ22CHE3/5B is available at Aetrix Electronics and suitable for automotive control units, industrial motor drives, telecom power supplies, and sensor interface circuits requiring stable component supply across multi-year production cycles.
Supply support for SMBJ22CHE3/5B 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade validation.
The SMBJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of SMBJ22CHE3/5B at its rated peak pulse current?
The SMBJ22CHE3/5B has a maximum clamping voltage (VC) of 35.5 V at its rated peak pulse current of 16.9 A (10/1000 µs waveform). This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ22CHE3/5B maintains this clamping performance consistently due to its glass-passivated junction and low incremental surge resistance.
Is SMBJ22CHE3/5B qualified for automotive applications?
Yes, SMBJ22CHE3/5B is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in datasheet 88392. This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD - validating SMBJ22CHE3/5B for use in automotive electronic control units, body modules, and powertrain subsystems where reliability under harsh environmental conditions is required.
What does the "5B" in SMBJ22CHE3/5B indicate?
The "5B" in SMBJ22CHE3/5B denotes the preferred package code specifying 13-inch diameter plastic tape and reel packaging with a base quantity of 3200 units. This format supports high-volume automated SMT placement and is distinct from "52" (7-inch reel, 750 units). The "HE3" suffix confirms RoHS-compliance and AEC-Q101 qualification, while "SMBJ22C" identifies the 22 V unidirectional variant within the SMBJ family.
How does SMBJ22CHE3/5B differ from bidirectional variants like SMBJ22CHE3/5B-CA?
SMBJ22CHE3/5B is unidirectional and features polarity marking (cathode band); it conducts only in reverse breakdown. Bidirectional variants such as SMBJ22CHE3/5B-CA do not have polarity markings and suppress transients in both directions - but SMBJ22CHE3/5B-CA does not exist in Vishay's official ordering matrix. True bidirectional equivalents use "CA" suffix (e.g., SMBJ22CAHE3/5B), which exhibits symmetric VBR and no cathode band - making them unsuitable as direct replacements without circuit redesign.
What is the thermal resistance of SMBJ22CHE3/5B, and how does it affect PCB layout?
SMBJ22CHE3/5B 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. This value directly impacts PCB copper area requirements: reducing pad size increases thermal impedance, risking junction overheating during repetitive surges. For sustained 5.0 W power dissipation, designers must ensure adequate copper pour and consider thermal vias to inner ground planes to maintain TJ ≤ 150 °C.
SMBJ22CHE3/5B 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):
- 15.2A
- 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)
SMBJ22CHE3/5B FAQ
1.How can I place an order for SMBJ22CHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ22CHE3/5B 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 SMBJ22CHE3/5B reliable?
The price and inventory of SMBJ22CHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ22CHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ22CHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ22CHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ22CHE3/5B?
SMBJ22CHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ22CHE3/5B 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 SMBJ22CHE3/5B?
For technical support, including SMBJ22CHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ22CHE3/5B requirements.
6.How does Aetrix verify that SMBJ22CHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ22CHE3/5B 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 SMBJ22CHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ22CHE3/5B?
All SMBJ22CHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ22CHE3/5B, 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 SMBJ22CHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ22CHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ22CHE3/5B Tags
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