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Vishay General Semiconductor - Diodes Division SMCJ22AHM3_A/I
- Part No.:
- SMCJ22AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ22AHM3_A/I.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,261
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Product details
Overview
SMCJ22AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, with 22 V standoff voltage (VWM), 24.4–26.9 V breakdown voltage (VBR at 1 mA), and 1500 W peak pulse power rating (10/1000 µs waveform). It clamps transients to ≤35.5 V at 42.3 A peak surge current and operates from –55 °C to +150 °C junction temperature, designed for protecting MOSFETs, ICs, and sensor signal lines in automotive and industrial power rails.
For engineers reviewing the SMCJ22AHM3_A/I datasheet, SMCJ22AHM3_A/I pinout, SMCJ22AHM3_A/I application, or SMCJ22AHM3_A/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, halogen-free RoHS compliance, 1500 W surge capability, and thermal resistance (RθJA = 75 °C/W) under standard pad layout.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ps) to transient overvoltages and low incremental surge resistance. Its unidirectional configuration provides cathode-band polarity marking and forward conduction capability up to 200 A (8.3 ms half-sine), enabling robust protection of DC power inputs and I/O lines against ESD, load dump, and inductive switching spikes.
The device meets J-STD-020 MSL Level 1 moisture sensitivity and is qualified to AEC-Q101 for automotive applications. Its SMC package supports automated placement and delivers 1500 W peak pulse power dissipation when mounted on 8.0 mm × 8.0 mm copper pads per terminal, with thermal resistance from junction to lead (RθJL) of 15 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin for protected line. |
| VBR (min/max) | 24.4 V / 26.9 V at 1 mA - Confirmed breakdown threshold range; ensures reliable turn-on during transients without premature conduction. |
| VC @ IPPM | ≤35.5 V at 42.3 A - Clamping voltage under full 1500 W surge; determines maximum stress seen by downstream ICs. |
| PPPM | 1500 W - Peak pulse power handling (10/1000 µs); enables protection against high-energy automotive load-dump events. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive environments and industrial enclosures. |
| RθJA | 75 °C/W - Thermal resistance junction-to-ambient on standard PCB pad; informs heatsinking requirements for sustained surge duty. |
| IFSM | 200 A - Non-repetitive forward surge current (8.3 ms half-sine); allows safe handling of short-circuit or motor-start surges. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Cathode indicated by band on body; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground during overvoltage events. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock per AEC specification. |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global automotive and industrial OEMs without compromising surge performance. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients, improving protection margin for sensitive 3.3 V/5 V logic. |
| MSL Level 1 rating | Enables standard reflow assembly without baking or special handling; compatible with high-volume SMT production. |
| Glass passivated junction | Provides stable leakage characteristics and long-term reliability under thermal and electrical stress in harsh environments. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs and body control modules against ISO 7637-2 load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp positive-going surges above 22 V. Use Value: Limits peak voltage to ≤35.5 V during 1500 W surges, preventing damage to 36 V-rated regulators and microcontrollers. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) in factory automation sensors exposed to cable-induced ESD and inductive kickback. IC Role / Device Role / Timing Role: TVS connected across signal and return paths to suppress bidirectional transients while maintaining DC integrity. Use Value: Sub-1 ns response time and <1 µA leakage at 22 V ensure minimal signal distortion and no impact on precision current-loop accuracy. |
| DC-DC Converter Input Protection | Motor Drive Gate Driver Protection |
Use Scenario: Shielding buck converter inputs in telecom power supplies from lightning-induced surges on AC/DC front-end outputs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V input rail upstream of controller IC and MOSFETs. Use Value: 1500 W rating handles repetitive 10/1000 µs surges without degradation; RθJL = 15 °C/W supports thermal stability during burst-mode operation. | Use Scenario: Preventing gate oxide failure in high-side N-channel MOSFET drivers due to Miller-induced voltage spikes during fast switching. IC Role / Device Role / Timing Role: TVS placed between gate and source to clamp negative-going transients below –0.7 V and positive spikes above VGS rating. Use Value: Low capacitance (<100 pF at 0 V) avoids slowing gate drive edges; 200 A IFSM withstands repeated switching surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22AHE3_A/I | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W), same VWM/VBR. | Suitable for space-constrained consumer electronics with lower surge exposure; not rated for automotive load dump. | Select when board area is critical and surge energy is ≤400 W; verify thermal margin with reduced pad area. |
| SMCJ22AHE3_A/I | Same electrical specs and SMC package, but commercial-grade (non-AEC-Q101), RoHS-compliant without halogen-free assurance. | Appropriate for industrial controls where automotive qualification is unnecessary; identical mounting and layout. | Choose for cost-sensitive non-automotive designs requiring identical surge performance and footprint. |
Compared with SMCJ22AHM3_A/I, SMAJ22AHE3_A/I offers smaller size but significantly lower surge capacity and thermal robustness, while SMCJ22AHE3_A/I matches all electrical and mechanical specs except AEC-Q101 qualification and halogen-free material compliance.
Availability
SMCJ22AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, DC-DC converter inputs, and motor drive gate driver protection requiring stable component supply and AEC-Q101 traceability.
Supply support for SMCJ22AHM3_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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The SMCJ series is engineered for high-energy transient suppression in demanding automotive and industrial environments, delivering consistent clamping behavior and AEC-Q101 validation across its voltage range.
FAQ
What is the clamping voltage of the SMCJ22AHM3_A/I under maximum surge conditions?
The SMCJ22AHM3_A/I clamps to a maximum of 35.5 V when subjected to its rated peak pulse current of 42.3 A (10/1000 µs waveform). This value is measured at the device terminals under standard test conditions with 8.0 mm × 8.0 mm copper pads per lead, ensuring predictable overvoltage limiting for downstream components in the SMCJ22AHM3_A/I protection circuit.
Is the SMCJ22AHM3_A/I suitable for automotive applications?
Yes, the SMCJ22AHM3_A/I is AEC-Q101 qualified and specifically designated for automotive use with the "HM3" suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. Its thermal performance, surge robustness, and qualification testing make it appropriate for engine control units, body electronics, and ADAS power domains where SMCJ22AHM3_A/I must withstand load dump and ESD per ISO 16750 and ISO 10605.
What does the "_A/I" suffix mean in SMCJ22AHM3_A/I?
The "_A/I" suffix in SMCJ22AHM3_A/I denotes packaging and reel configuration: "A" indicates revision level A per Vishay's internal documentation, and "I" specifies 13-inch diameter plastic tape-and-reel delivery with 3500 units per reel. This matches the ordering code SMCJ22AHM3_A/I shown in Vishay's official documentation for the SMCJ22AHM3_A/I part.
How does the SMCJ22AHM3_A/I differ from the SMCJ22AHE3_A/I variant?
The SMCJ22AHM3_A/I differs from SMCJ22AHE3_A/I in material composition and qualification: HM3 is halogen-free and AEC-Q101 qualified, while HE3 is RoHS-compliant but not halogen-free and lacks automotive qualification. Both share identical electrical parameters, SMC package, and pinout-so SMCJ22AHM3_A/I is selected when automotive compliance and green materials are mandatory.
What is the maximum operating temperature for the SMCJ22AHM3_A/I?
The SMCJ22AHM3_A/I has a maximum junction temperature (TJ) of +150 °C and operates over a junction/storage temperature range of –55 °C to +150 °C. This rating enables deployment in under-hood automotive locations and industrial enclosures where ambient temperatures exceed 105 °C, provided PCB thermal design maintains SMCJ22AHM3_A/I junction temperature within limit under worst-case surge duty.
SMCJ22AHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 42.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMC)
SMCJ22AHM3_A/I FAQ
1.How can I place an order for SMCJ22AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ22AHM3_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 SMCJ22AHM3_A/I reliable?
The price and inventory of SMCJ22AHM3_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 SMCJ22AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ22AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ22AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ22AHM3_A/I?
SMCJ22AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ22AHM3_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 SMCJ22AHM3_A/I?
For technical support, including SMCJ22AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ22AHM3_A/I requirements.
6.How does Aetrix verify that SMCJ22AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ22AHM3_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 SMCJ22AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ22AHM3_A/I?
All SMCJ22AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ22AHM3_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 SMCJ22AHM3_A/I part is unused and in its original packaging.
Return procedure for SMCJ22AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ22AHM3_A/I Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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