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Vishay General Semiconductor - Diodes Division SMA5J22CHE3/5A
- Part No.:
- SMA5J22CHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J22CHE3/5A.pdf
- Description:
- TVS DIODE 22VWM 39.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,050
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Product details
Overview
SMA5J22CHE3/5A from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for clamping voltage transients on signal and power lines. It features a 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR) at 1 mA, 500 W peak pulse power (10/1000 µs), 14.1 A peak pulse current (IPPM), and clamps to ≤35.5 V at rated surge. It is AEC-Q101 qualified and used in automotive sensor protection.
For engineers reviewing the SMA5J22CHE3/5A datasheet, SMA5J22CHE3/5A pinout, SMA5J22CHE3/5A application, or SMA5J22CHE3/5A equivalent, key selection criteria include bi-directional clamping capability, 500 W surge rating, DO-214AC thermal performance (RθJA = 80 °C/W), AEC-Q101 qualification, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, enabling robust protection of AC-coupled or floating signal paths without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM), while the low incremental surge resistance supports effective clamping under fast-rising transients (e.g., ISO 7637-2 pulses).
The device is rated for continuous operation from –55 °C to +150 °C junction temperature and meets MSL Level 1 per J-STD-020 (260 °C peak reflow). Its thermal resistance (RθJL = 25 °C/W) enables reliable power dissipation when mounted on recommended pad layout, critical for sustained surge handling in automotive ECUs and industrial I/O modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - maximum reverse stand-off voltage before clamping begins; defines safe operating window for protected circuitry |
| VBR min/max | 24.4 V / 26.9 V at 1 mA - guaranteed breakdown range ensuring predictable turn-on during overvoltage events |
| VC @ IPPM | ≤35.5 V - clamping voltage at 14.1 A peak pulse; limits stress on downstream ICs like CAN transceivers or ADC inputs |
| PPPM | 500 W (10/1000 µs) - surge energy handling capacity compatible with ISO 16750-2 automotive load dump requirements |
| Package | DO-214AC (SMA) - surface-mount outline with 5.0 mm × 5.0 mm thermal pad footprint for PCB-level heat spreading |
| Qualification | AEC-Q101 qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
| Leakage | ≤1 µA at 22 V - minimal DC loading on high-impedance sensor bias networks or reference lines |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with two coplanar matte tin-plated leads; no polarity marking for bi-directional configuration; RoHS-compliant, AEC-Q101 qualified (HE3 suffix); MSL Level 1, 260 °C peak reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient conduction path | No functional distinction between terminals; either lead connects to protected line, other to ground or reference plane |
| Case body | Thermal interface | Non-electrical; requires minimum 5.0 mm × 5.0 mm copper pad per terminal for specified RθJA = 80 °C/W |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), or ungrounded sensor outputs without polarity concerns |
| 500 W peak pulse power | Supports immunity to severe transients such as ISO 7637-2 Pulse 5a (load dump) in 12 V automotive systems |
| Glass-passivated junction | Ensures long-term stability of VBR and low parametric drift across temperature and lifetime stress |
| AEC-Q101 qualification | Validates suitability for under-hood automotive applications including engine control, ADAS sensors, and body electronics |
| MSL Level 1 rating | Permits standard SMT reflow without moisture sensitivity concerns, reducing manufacturing risk and cost |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine control units exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between sensor output and microcontroller ADC input or signal conditioner. Use Value: Clamps transients to ≤35.5 V while maintaining <1 µA leakage, preserving sensor accuracy and preventing ADC saturation or latch-up. | Use Scenario: Safeguarding 24 V DC digital input channels on PLC modules against field-wiring surges and relay contact bounce. IC Role / Device Role / Timing Role: Bi-directional TVS connected between input line and common rail to shunt positive/negative spikes before optocoupler input stage. Use Value: 500 W surge rating handles repetitive 10/1000 µs transients per IEC 61000-4-5 Level 3, extending system uptime in factory automation. |
| Automotive CAN Bus Protection | Consumer Appliance Motor Control |
Use Scenario: Shielding high-speed CAN FD transceiver pins (CANH/CANL) from ESD and coupled transients in vehicle infotainment gateways. IC Role / Device Role / Timing Role: Low-capacitance bi-directional TVS placed directly at connector entry point, referenced to chassis ground. Use Value: Symmetrical clamping prevents signal distortion on differential bus; 35.5 V VC avoids violating CANH recessive threshold (≥2.5 V) during surge. | Use Scenario: Suppressing commutation spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, blenders). IC Role / Device Role / Timing Role: TVS mounted across motor terminals or between H-bridge output and ground to clamp inductive kickback. Use Value: 14.1 A IPPM and 500 W PPPM absorb typical 100–200 mJ motor flyback energy, preventing MOSFET avalanche failure and EMI radiation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J22CA-E3/5A | Same electrical specs and DO-214AC package; differs only in suffix - HE3 denotes AEC-Q101 qualification, E3 is commercial grade | Not suitable for automotive applications requiring AEC-Q101; acceptable for industrial or consumer use where qualification not mandated | Select SMA5J22CHE3/5A when automotive qualification is required; otherwise SMA5J22CA-E3/5A offers identical protection at lower cost |
| SMC5J22CA | Higher power rating (1500 W), larger DO-214AB (SMC) package, same VWM/VBR/VC specs | Better suited for higher-energy threats (e.g., ISO 16750-2 load dump in 24 V systems); requires larger PCB area and different thermal design | Choose SMC5J22CA only if 500 W is insufficient and board space allows DO-214AB footprint; SMA5J22CHE3/5A remains optimal for space-constrained automotive modules |
Compared with SMA5J22CA-E3/5A, the SMA5J22CHE3/5A adds AEC-Q101 validation for automotive deployment, while versus SMC5J22CA it trades 1500 W surge capacity for compact DO-214AC size-making SMA5J22CHE3/5A the preferred choice for AEC-Q101–compliant, space-limited 12 V vehicle subsystems.
Availability
SMA5J22CHE3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, and CAN bus protection requiring stable component supply, AEC-Q101 compliance, and high-reliability transient suppression.
Supply support for SMA5J22CHE3/5A 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 optimization.
The SMA5J series is engineered for high-power-density transient suppression in automotive and industrial environments, delivering robust 500 W surge handling in the compact DO-214AC package with AEC-Q101 validation.
FAQ
What does the 'HE3' suffix indicate in SMA5J22CHE3/5A?
The 'HE3' suffix in SMA5J22CHE3/5A specifies that the device is RoHS-compliant and AEC-Q101 qualified. The 'H' denotes AEC-Q101 qualification, 'E3' indicates RoHS-compliant matte tin plating meeting JESD 201 Class 2 whisker resistance. This distinguishes SMA5J22CHE3/5A from commercial-grade variants like SMA5J22CA-E3/5A, confirming its suitability for automotive under-hood applications.
Is SMA5J22CHE3/5A uni-directional or bi-directional?
SMA5J22CHE3/5A is a bi-directional transient voltage suppressor, as confirmed by the 'CA' designation in its full family name (SMA5J22CA) and documentation stating 'for bi-directional devices use CA suffix'. It provides symmetrical clamping in both polarities, making it ideal for protecting AC-coupled lines, differential buses, or ungrounded sensor outputs without polarity constraints.
What is the maximum clamping voltage of SMA5J22CHE3/5A at its rated surge current?
The maximum clamping voltage (VC) of SMA5J22CHE3/5A is 35.5 V at its rated peak pulse current (IPPM) of 14.1 A, measured under the standard 10/1000 µs waveform. This value ensures downstream components-such as 3.3 V or 5 V microcontrollers, CAN transceivers, or op-amps-are held below destructive voltage thresholds during transient events.
Does SMA5J22CHE3/5A require a heatsink for standard operation?
No, SMA5J22CHE3/5A does not require an external heatsink for standard transient suppression duty cycles. Its DO-214AC package achieves RθJA = 80 °C/W when mounted on the recommended 5.0 mm × 5.0 mm copper pads per terminal. Continuous power dissipation is limited by junction temperature (TJ max = 150 °C); heatsinking is unnecessary unless subjected to frequent high-energy surges exceeding datasheet derating curves.
How does SMA5J22CHE3/5A compare to SMAJ22A in terms of surge capability?
SMA5J22CHE3/5A delivers 500 W peak pulse power (10/1000 µs), whereas the SMAJ22A family is rated for 400 W. This 25% higher surge rating enables SMA5J22CHE3/5A to withstand more severe transients such as extended-duration load dumps or multiple fast pulses-critical for modern automotive ECUs where system-level immunity requirements have increased beyond legacy SMAJ specifications.
SMA5J22CHE3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- 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):
- 12.7A
- Power - Peak Pulse:
- 500W
- 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-214AC (SMA)
SMA5J22CHE3/5A FAQ
1.How can I place an order for SMA5J22CHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J22CHE3/5A 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 SMA5J22CHE3/5A reliable?
The price and inventory of SMA5J22CHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J22CHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J22CHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J22CHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J22CHE3/5A?
SMA5J22CHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J22CHE3/5A 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 SMA5J22CHE3/5A?
For technical support, including SMA5J22CHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J22CHE3/5A requirements.
6.How does Aetrix verify that SMA5J22CHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J22CHE3/5A 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 SMA5J22CHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J22CHE3/5A?
All SMA5J22CHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J22CHE3/5A, 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 SMA5J22CHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J22CHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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