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Vishay General Semiconductor - Diodes Division SMB10J22AHM3/H
- Part No.:
- SMB10J22AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J22AHM3/H.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,112
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Product details
Overview
SMB10J22AHM3/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection with 1000 W peak pulse power (10/1000 µs), 22 V stand-off voltage (VWM), and 35.5 V clamping voltage at 28.2 A peak pulse current. It is AEC-Q101 qualified and used to protect automotive sensor signal lines, MOSFET gate drivers, and microcontroller I/O pins against inductive switching transients.
For engineers reviewing the SMB10J22AHM3/H datasheet, SMB10J22AHM3/H pinout, SMB10J22AHM3/H application, or SMB10J22AHM3/H equivalent, key selection criteria include clamping performance under 10/1000 µs surge, AEC-Q101 qualification status, unidirectional polarity, thermal resistance (RθJA = 72 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode employs a glass-passivated silicon junction optimized for fast response (<1 ps) and low incremental surge resistance, enabling effective suppression of ESD and lightning-induced transients per IEC 61000-4-2/4-5. Its unidirectional configuration provides forward conduction path during overvoltage events while maintaining low leakage (<1.0 µA at 22 V).
The device operates across -55 °C to +150 °C junction temperature range and meets J-STD-020 MSL level 1 (260 °C peak reflow). Its SMB package supports high-power density mounting with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102.
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 breakdown activation above normal operating voltage |
| VC @ IPPM | 35.5 V at 28.2 A - clamping voltage limiting downstream component stress during 10/1000 µs surge |
| PPPM | 1000 W - peak pulse power handling capability defines transient energy absorption capacity |
| RθJA | 72 °C/W - thermal resistance determines required PCB copper area for sustained surge duty |
| IFSM | 100 A - non-repetitive forward surge rating supports single-event inductive kick protection |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode indicated by color band. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), with 5.59 mm lead-to-lead spacing and 2.18 mm minimum pad width.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry during clamping | Connected to protected line (e.g., sensor output); conducts when transient exceeds VBR |
| Cathode | Reverse-biased terminal; marked with band | Connected to ground or lower-potential rail; defines unidirectional clamping direction |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and improved humidity resistance vs. epoxy-passivated alternatives |
| MSL Level 1 rating | Enables standard SMT reflow without moisture sensitivity concerns (peak 260 °C) |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets automotive environmental requirements and eliminates corrosive halogen emissions during soldering |
| Low RθJL = 20 °C/W | Supports efficient heat transfer to PCB traces, critical for repeated surge events in engine control units |
| Automated placement compatible | Standard SMB footprint and matte tin plating ensure high-yield pick-and-place assembly |
Applications
| Automotive Sensor Protection | Industrial Motor Drive I/O |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine control modules from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor signal line and chassis ground to clamp transients before reaching MCU ADC input. Use Value: Limits voltage seen by downstream 3.3 V or 5 V logic to ≤35.5 V during 1000 W surges, preserving signal integrity and preventing latch-up. | Use Scenario: Shielding PLC digital I/O channels driving solenoids and relays from inductive kickback during switching. IC Role / Device Role / Timing Role: Standoff protection element mounted directly at connector interface to absorb 8.3 ms half-sine surges up to 100 A. Use Value: Prevents damage to optocoupler inputs and microcontroller GPIOs by clamping transients within 1 ps response time. |
| Power Supply Input Stage | Consumer Device USB Port |
Use Scenario: Safeguarding 24 V DC input rails of industrial HMIs and embedded controllers against ISO 7637-2 Pulse 1/2a/5a transients. IC Role / Device Role / Timing Role: Primary front-end TVS in series with fuse and common-mode choke on main power entry point. Use Value: Absorbs 1000 W pulses without degradation, maintaining VWM margin above nominal 24 V supply and enabling compact layout. | Use Scenario: Protecting USB 2.0 data lines (D+/D−) and VBUS in automotive infotainment head units from ESD and cable discharge events. IC Role / Device Role / Timing Role: Unidirectional clamping device on VBUS line only, coordinated with bidirectional TVS on differential pair. Use Value: Provides 30 kV contact ESD protection per IEC 61000-4-2 while adding <0.5 pF parasitic capacitance to preserve signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22AHE3/A | Same VWM (22 V), same SMB package, but commercial-grade (non-AEC-Q101), E3 suffix (RoHS, not halogen-free) | Lacks automotive qualification; suitable for industrial/commercial designs without AEC compliance mandates | Select when cost sensitivity outweighs automotive reliability requirements and halogen-free material is not mandated |
| SAC22 | Lower PPPM (600 W), same VWM, DO-214AC (SMA) package, higher RθJA (90 °C/W) | Reduced surge handling and thermal performance; requires larger copper area for equivalent cooling | Choose only if space constraints force SMA footprint and 600 W rating suffices for system-level threat model |
Compared with SMB10J22AHM3/H, SMBJ22AHE3/A offers identical electrical specs but lacks AEC-Q101 validation and halogen-free construction, while SAC22 trades power handling and thermal efficiency for smaller package size-making SMB10J22AHM3/H optimal for automotive-grade 1000 W surge immunity where board space permits SMB.
Availability
SMB10J22AHM3/H is available at Aetrix Electronics and suitable for automotive electronics, industrial motor controls, and consumer power adapter designs requiring stable component supply with AEC-Q101 assurance and halogen-free compliance.
Supply support for SMB10J22AHM3/H 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, rectifiers, and protection devices with emphasis on reliability, power density, and automotive qualification.
The SMB10J series targets high-energy transient suppression in harsh environments, with design focus on AEC-Q101 compliance, low clamping ratio, and robust thermal performance for engine bay and powertrain applications.
FAQ
What is the clamping voltage of SMB10J22AHM3/H at its rated peak pulse current?
The SMB10J22AHM3/H has a maximum clamping voltage (VC) of 35.5 V at its specified peak pulse current (IPPM) of 28.2 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and defines the upper voltage limit imposed on protected circuitry during surge events. The SMB10J22AHM3/H maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C), ensuring consistent protection in automotive under-hood environments.
Does SMB10J22AHM3/H meet automotive qualification standards?
Yes, SMB10J22AHM3/H is AEC-Q101 qualified, as confirmed by Vishay's official documentation (Document Number: 88422, Revision: 09-Jan-2024). The HM3 suffix denotes halogen-free, RoHS-compliant, and AEC-Q101-qualified construction. Qualification includes stress tests for temperature cycling, high-temperature reverse bias (HTRB), and ESD robustness-making SMB10J22AHM3/H suitable for use in engine control units, body electronics, and ADAS sensor modules where automotive-grade reliability is mandatory.
What is the thermal resistance of SMB10J22AHM3/H, and how does it affect PCB layout?
SMB10J22AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard SMB footprint and minimal thermal vias. To maintain safe junction temperatures during repetitive surges, designers must allocate adequate copper area-reducing RθJA by adding thermal vias or increasing pad size. The SMB10J22AHM3/H datasheet specifies that derating begins above TA = 25 °C per Figure 2, so thermal design directly impacts usable surge duty cycle.
How does the SMB10J22AHM3/H differ from the SMBJ22AHE3/A variant?
The SMB10J22AHM3/H and SMBJ22AHE3/A share identical electrical parameters (VWM = 22 V, VC = 35.5 V, PPPM = 1000 W) and SMB package, but differ in qualification and materials: SMB10J22AHM3/H carries HM3 suffix-halogen-free, RoHS-compliant, and AEC-Q101 qualified-while SMBJ22AHE3/A uses E3 suffix-RoHS-compliant but not halogen-free and commercially qualified only. Thus, SMB10J22AHM3/H is designated for automotive applications requiring both environmental and reliability certification, whereas SMBJ22AHE3/A serves cost-sensitive industrial designs.
Can SMB10J22AHM3/H be used in bidirectional configurations?
No, SMB10J22AHM3/H is strictly unidirectional, as indicated by its part number suffix "A" (vs. "CA" for bidirectional variants like SMB8J22CA). Its cathode band marks the polarity, and it conducts only when anode voltage exceeds cathode by >VBR. For bidirectional protection-such as AC line or differential data bus applications-a separate bidirectional TVS (e.g., SMB8J22CA) must be selected. Using SMB10J22AHM3/H in reverse-biased AC scenarios would result in unintended conduction and potential failure.
SMB10J22AHM3/H 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 28.2A
- Power - Peak Pulse:
- 1000W (1kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J22AHM3/H FAQ
1.How can I place an order for SMB10J22AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J22AHM3/H 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 SMB10J22AHM3/H reliable?
The price and inventory of SMB10J22AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J22AHM3/H is usually 5 days.
3.What payment methods are accepted for SMB10J22AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J22AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J22AHM3/H?
SMB10J22AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J22AHM3/H 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 SMB10J22AHM3/H?
For technical support, including SMB10J22AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J22AHM3/H requirements.
6.How does Aetrix verify that SMB10J22AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMB10J22AHM3/H 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 SMB10J22AHM3/H meets industry standards.
7.What is the process for return or replacement of SMB10J22AHM3/H?
All SMB10J22AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J22AHM3/H, 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 SMB10J22AHM3/H part is unused and in its original packaging.
Return procedure for SMB10J22AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J22AHM3/H Tags
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