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Vishay General Semiconductor - Diodes Division SMA5J22CAHE3_A/I
- Part No.:
- SMA5J22CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J22CAHE3_A/I.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,700
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Product details
Overview
SMA5J22CAHE3_A/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on signal and power lines. It features a 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR), 500 W peak pulse power (PPPM), and clamps transients to ≤35.5 V at 14.1 A IPPM - used in automotive sensor interfaces, industrial I/O protection, and telecom line receivers.
For engineers reviewing the SMA5J22CAHE3_A/I datasheet, SMA5J22CAHE3_A/I pinout, SMA5J22CAHE3_A/I application, or SMA5J22CAHE3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 500 W 10/1000 μs surge rating, low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector, responding within picoseconds to transient overvoltages while maintaining low leakage (<1.0 μA at VWM). Its glass-passivated junction ensures stable breakdown characteristics and robust surge endurance under repetitive stress.
Rated for -55 °C to +150 °C operation, it delivers consistent clamping performance across temperature when mounted per recommended pad layout. The bidirectional configuration eliminates polarity concerns in AC-coupled or differential signal paths, supporting both positive and negative surge suppression without external circuit reconfiguration.
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 - verified breakdown range at 1 mA test current; ensures predictable turn-on across production lot and temperature. |
| VC @ IPPM | 35.5 V - clamping voltage at 14.1 A peak pulse current (10/1000 μs); limits downstream IC stress during lightning or ESD events. |
| PPPM | 500 W - peak pulse power handling per 10/1000 μs waveform; supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity. |
| ID @ VWM | ≤1.0 μA - reverse leakage at rated stand-off voltage; minimizes standby power loss and avoids false triggering in high-impedance circuits. |
| TJ max | +150 °C - maximum junction temperature; enables deployment in under-hood automotive or industrial enclosures without derating. |
| Package | SMA (DO-214AC) - surface-mount package with 5.28 mm × 4.50 mm footprint; compatible with standard reflow profiles and J-STD-020 MSL level 1. |
Pinout & Package
SMA (DO-214AC) package: molded plastic case with matte tin-plated leads, UL 94 V-0 rated, no polarity marking for bidirectional types.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bidirectional terminal pair | Identical electrical behavior in both directions; connects across protected line and ground (or between differential lines) without orientation dependency. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - required for engine control, ADAS, and body electronics. |
| Glass passivated junction | Enhances long-term stability of VBR and leakage under thermal stress and humidity exposure, reducing parameter drift over 15+ year service life. |
| Low incremental surge resistance | Enables tighter clamping (VC − VBR ≈ 11.1 V) versus competing TVS devices, lowering peak voltage seen by protected ICs during fast transients. |
| MSL Level 1 (260 °C peak) | Supports single-reflow assembly without moisture sensitivity concerns; eliminates baking requirements and reduces manufacturing cost. |
Applications
| Automotive Sensor Protection | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and Hall-effect sensors from load dump and inductive switching spikes in 12 V vehicle networks. IC Role / Device Role: Bidirectional shunt clamp placed between signal line and chassis ground. Use Value: Limits transient voltage to ≤35.5 V during 500 W surges, preventing latch-up or gate oxide damage in automotive-grade microcontrollers and transceivers. |
Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers against field wiring faults and EFT bursts. IC Role / Device Role: Line-to-ground TVS on analog input terminals prior to signal conditioning op-amps. Use Value: Maintains <1.0 μA leakage at 22 V VWM to avoid offset error in precision current measurement circuits while surviving repeated 1 kV surges. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Surge protection on Ethernet PHY differential pairs or DSL line drivers exposed to induced lightning transients. IC Role / Device Role: Bidirectional differential clamp between TX+/TX− or RX+/RX− lines. Use Value: Symmetric clamping ensures common-mode and differential-mode transient suppression without signal distortion or DC bias shift. |
Use Scenario: Secondary-side overvoltage suppression on 19 V laptop adapter outputs prone to feedback loop failure or rectifier short. IC Role / Device Role: Shunt limiter between output rail and ground, triggered only during fault conditions. Use Value: 22 V VWM aligns with typical adapter OVP thresholds; 35.5 V VC prevents downstream USB-PD controller damage during sustained overvoltage events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J22CAHM3_A/I | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification. | No functional difference; selected where halogen-free material compliance is mandated (e.g., EU automotive Tier 1 supply chain). | Direct substitution if halogen-free requirement applies; same thermal and surge performance as SMA5J22CAHE3_A/I. |
| SMCJ22CAHE3_A/I | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package with 1500 W PPPM rating and higher IPPM (32.4 A). | Used where higher surge energy (e.g., IEC 61000-4-5 Level 4) or improved thermal dissipation is needed; requires larger PCB area. | Select when system-level surge testing exceeds 500 W; not pin-compatible due to different footprint and lead spacing. |
Compared with SMA5J22CAHE3_A/I, SMA5J22CAHM3_A/I offers identical protection performance with halogen-free construction, while SMCJ22CAHE3_A/I provides 3× higher surge capacity in a physically larger package - enabling design flexibility between space-constrained and high-reliability deployments.
Availability
SMA5J22CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, and telecom line receivers requiring stable component supply with AEC-Q101 assurance and full traceability.
Supply support for SMA5J22CAHE3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific optimization.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained, high-reliability environments - targeting automotive, industrial, and telecom infrastructure where robustness and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of SMA5J22CAHE3_A/I at its rated peak pulse current?
The SMA5J22CAHE3_A/I clamps to a maximum of 35.5 V at its specified peak pulse current (IPPM) of 14.1 A under a 10/1000 μs waveform. This value is measured per JEDEC standards and confirmed across production lots. The clamping performance ensures protected downstream ICs remain below absolute maximum voltage ratings during surge events. SMA5J22CAHE3_A/I maintains this specification across its full operating temperature range (-55 °C to +150 °C) when mounted per Vishay's recommended pad layout.
Is SMA5J22CAHE3_A/I qualified for automotive applications?
Yes, SMA5J22CAHE3_A/I is AEC-Q101 qualified, as indicated by the "HE3" suffix and documented in Vishay's official qualification reports. It undergoes rigorous stress testing including temperature cycling, highly accelerated life testing (HALT), and surge endurance validation specifically for automotive under-hood and cabin environments. SMA5J22CAHE3_A/I is approved for use in engine control units, ADAS camera modules, and body electronics where transient immunity and long-term reliability are critical.
What does the "CA" suffix mean in SMA5J22CAHE3_A/I?
The "CA" suffix in SMA5J22CAHE3_A/I denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., SMA5J22A), SMA5J22CAHE3_A/I has no cathode band marking and exhibits identical VBR, VC, and leakage characteristics in either direction. This makes SMA5J22CAHE3_A/I ideal for AC-coupled lines, differential buses, and applications where polarity cannot be guaranteed during installation or operation.
What is the maximum reverse leakage current for SMA5J22CAHE3_A/I at its stand-off voltage?
The maximum reverse leakage current (ID) for SMA5J22CAHE3_A/I is 1.0 μA at its 22 V stand-off voltage (VWM), measured at 25 °C ambient. This low leakage ensures minimal impact on high-impedance signal paths and preserves accuracy in precision analog circuits such as sensor front-ends and current-loop receivers. SMA5J22CAHE3_A/I maintains leakage below 5.0 μA up to +125 °C, supporting stable operation in thermally demanding environments.
Does SMA5J22CAHE3_A/I require special PCB layout considerations?
Yes - SMA5J22CAHE3_A/I must be mounted on minimum recommended copper pads: 0.2" × 0.2" (5.0 mm × 5.0 mm) per terminal, as specified in the Vishay datasheet (Document Number: 88875). This layout ensures adequate thermal dissipation and achieves the rated 500 W peak pulse power. Using smaller pads reduces surge capability and may cause premature failure. SMA5J22CAHE3_A/I also requires short, direct traces to ground to minimize inductance and preserve clamping speed during fast transients.
SMA5J22CAHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 14.1A
- 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)
SMA5J22CAHE3_A/I FAQ
1.How can I place an order for SMA5J22CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J22CAHE3_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 SMA5J22CAHE3_A/I reliable?
The price and inventory of SMA5J22CAHE3_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 SMA5J22CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMA5J22CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J22CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J22CAHE3_A/I?
SMA5J22CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J22CAHE3_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 SMA5J22CAHE3_A/I?
For technical support, including SMA5J22CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J22CAHE3_A/I requirements.
6.How does Aetrix verify that SMA5J22CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMA5J22CAHE3_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 SMA5J22CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMA5J22CAHE3_A/I?
All SMA5J22CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J22CAHE3_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 SMA5J22CAHE3_A/I part is unused and in its original packaging.
Return procedure for SMA5J22CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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