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Vishay General Semiconductor - Diodes Division SMA5J22CAHE3_A/H
- Part No.:
- SMA5J22CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J22CAHE3_A/H.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,818
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Product details
Overview
SMA5J22CAHE3_A/H 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 (10/1000 µs), clamping voltage of 35.5 V at 14.1 A IPPM, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMA5J22CAHE3_A/H datasheet, SMA5J22CAHE3_A/H pinout, SMA5J22CAHE3_A/H application, or SMA5J22CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.42), MSL Level 1 moisture sensitivity, and compatibility with automated SMT assembly in harsh-environment electronics.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device during transients, leveraging an avalanche junction to divert surge current away from protected circuitry. Its bidirectional symmetry ensures identical clamping behavior in both polarities, eliminating polarity-dependent design constraints.
Designed for 10/1000 µs surge waveforms per IEC 61000-4-5, it delivers stable clamping down to -55 °C and up to +150 °C junction temperature, with thermal resistance RθJA = 80 °C/W and RθJL = 25 °C/W enabling reliable operation on standard 5.0 mm × 5.0 mm copper pads.
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 - Breakdown occurs within this range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 35.5 V at 14.1 A - Clamped voltage during 500 W surge, limiting stress on downstream ICs |
| PPPM | 500 W - Peak pulse power handling per 10/1000 µs waveform, critical for lightning/surge immunity |
| TJ max. | +150 °C - Maximum junction temperature, supporting under-hood automotive and industrial ambient conditions |
| MSL Level | Level 1 (260 °C peak reflow) - Enables standard lead-free reflow without preconditioning |
| AEC-Q101 | Qualified - Meets stress-test requirements for automotive electronic modules |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional - no polarity marking; symmetrical two-terminal construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; surge current flows bidirectionally across the junction |
| Case (body) | Thermal and mechanical interface | Plastic-molded DO-214AC body provides UL 94 V-0 flammability rating and mechanical robustness |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection on AC-coupled or floating signal lines without polarity concerns |
| Glass passivated junction | Ensures long-term reliability and stable VBR over temperature and life cycle |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD, inductive kick) |
| AEC-Q101 qualification | Validates performance under automotive-grade temperature cycling, humidity, and mechanical shock |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and whisker resistance per JESD 201 Class 2 |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting ABS wheel speed sensor outputs exposed to load-dump and alternator ripple in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pair to clamp ±35 V transients without disrupting DC bias. Use Value: Prevents latch-up or damage to analog front-end amplifiers while maintaining signal integrity below 22 V common-mode range. |
Use Scenario: Safeguarding CANH/CANL lines in factory automation gateways against EFT bursts and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS suppressing >1 kV surges while preserving <1 ns signal edge fidelity required for 1 Mbps CAN FD. Use Value: Maintains bus uptime by limiting clamping voltage to 35.5 V-well below ISO 11898-2 receiver absolute maximum ratings. |
| Consumer Power Adapter Input | Telecom DSL Line Interface |
Use Scenario: Secondary-side surge suppression on 5 V/12 V DC outputs of wall adapters subjected to mains-borne transients. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing 500 W surges without forward conduction, protecting downstream LDOs and USB controllers. Use Value: Eliminates need for series impedance or additional filtering-direct parallel placement preserves regulation accuracy and transient response. |
Use Scenario: Primary protection on twisted-pair DSL line cards facing induced surges from nearby power lines or lightning coupling. IC Role / Device Role / Timing Role: Bidirectional clamping device shunting common-mode surges between tip/ring and ground, rated for repeated 10/1000 µs events. Use Value: Achieves >20 kV contact ESD immunity (IEC 61000-4-2) and 4 kV surge (IEC 61000-4-5) with single-device simplicity. |
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/H | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification | No functional difference; selected when halogen-free material compliance is mandated | Choose SMA5J22CAHM3_A/H if BOM requires halogen-free materials per IPC-1752A or OEM green policy |
| SMCJ22CAHE3_A/H | Same VWM/VBR/VC but in larger SMC (DO-214AB) package; 1500 W PPPM rating vs. 500 W | Higher power handling enables use in primary-side AC input protection where surge energy exceeds 500 W | Choose SMCJ22CAHE3_A/H only when system-level surge testing requires >500 W dissipation; PCB layout must accommodate larger footprint |
Compared with SMA5J22CAHE3_A/H, SMA5J22CAHM3_A/H offers identical protection performance with halogen-free construction, while SMCJ22CAHE3_A/H trades smaller size for triple the surge power capacity-making it suitable only where higher energy absorption is validated necessary.
Availability
SMA5J22CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN networks, consumer power adapter outputs, and telecom DSL line protection requiring stable component supply and AEC-Q101 traceability.
Supply support for SMA5J22CAHE3_A/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, MOSFETs, and protection devices with emphasis on reliability and automotive-grade qualification.
The SMA5JxxCA family is engineered specifically for high-density, high-reliability transient suppression in space-constrained automotive and industrial control modules where bidirectional clamping and AEC-Q101 compliance are mandatory.
FAQ
What does the "CA" suffix indicate in SMA5J22CAHE3_A/H?
The "CA" suffix denotes a bidirectional configuration: SMA5J22CAHE3_A/H clamps voltage transients equally in both polarities, making it suitable for AC-coupled or floating signal lines where polarity cannot be guaranteed. This differs from unidirectional variants (e.g., SMA5J22AHE3_A/H) that require correct cathode orientation and only protect against negative-going surges.
Is SMA5J22CAHE3_A/H compatible with lead-free reflow processes?
Yes, SMA5J22CAHE3_A/H meets MSL Level 1 per J-STD-020 and is rated for a maximum peak reflow temperature of 260 °C, fully compatible with standard lead-free SAC305 solder profiles. Its matte tin-plated leads ensure solderability per J-STD-002 and resist whisker growth per JESD 201 Class 2.
How does the clamping voltage of SMA5J22CAHE3_A/H compare to its breakdown voltage?
SMA5J22CAHE3_A/H has a typical breakdown voltage (VBR) range of 24.4 V to 26.9 V at 1 mA, and clamps to 35.5 V at its rated peak pulse current (14.1 A). This yields a clamping ratio (VC/VBR) of approximately 1.42, indicating efficient voltage limiting with minimal overshoot during surge events.
Can SMA5J22CAHE3_A/H be used in place of a unidirectional TVS like SMA5J22AHE3_A/H?
No-SMA5J22CAHE3_A/H is electrically bidirectional and lacks polarity marking, whereas SMA5J22AHE3_A/H is unidirectional with a cathode band. Substituting SMA5J22CAHE3_A/H for a unidirectional part may compromise protection on DC-biased lines where forward conduction must be avoided; always verify circuit topology and bias conditions before substitution.
What is the maximum operating temperature for SMA5J22CAHE3_A/H?
The maximum junction temperature (TJ max.) for SMA5J22CAHE3_A/H is +150 °C, and its storage temperature range is -55 °C to +150 °C. This rating supports deployment in under-hood automotive environments and industrial enclosures where ambient temperatures exceed 105 °C, provided PCB thermal design maintains junction temperature within limit.
SMA5J22CAHE3_A/H 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/H FAQ
1.How can I place an order for SMA5J22CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J22CAHE3_A/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 SMA5J22CAHE3_A/H reliable?
The price and inventory of SMA5J22CAHE3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for SMA5J22CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J22CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J22CAHE3_A/H?
SMA5J22CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J22CAHE3_A/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 SMA5J22CAHE3_A/H?
For technical support, including SMA5J22CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J22CAHE3_A/H requirements.
6.How does Aetrix verify that SMA5J22CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMA5J22CAHE3_A/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 SMA5J22CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMA5J22CAHE3_A/H?
All SMA5J22CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J22CAHE3_A/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 SMA5J22CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMA5J22CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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