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Vishay General Semiconductor - Diodes Division SMA5J22A-E3/61
- Part No.:
- SMA5J22A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J22A-E3/61.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,179
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Product details
Overview
SMA5J22A-E3/61 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on power and signal lines. It features a 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR at 1 mA), 35.5 V clamping voltage (VC) at 14.1 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive power rails and industrial sensor interfaces.
For engineers reviewing the SMA5J22A-E3/61 datasheet, SMA5J22A-E3/61 pinout, SMA5J22A-E3/61 application, or SMA5J22A-E3/61 equivalent, key selection criteria include verified unidirectional clamping performance, AEC-Q101 qualification eligibility (via HE3 suffix variants), RoHS-compliant matte tin terminations, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal bias it presents <1 µA reverse leakage at 22 V, then rapidly avalanches when transients exceed VBR to clamp induced surges within nanoseconds. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance (<1.5 Ω typical), critical for protecting MOSFET gates and microcontroller I/O pins.
Thermally, it sustains 150 °C maximum junction temperature with 80 °C/W junction-to-ambient thermal resistance (on recommended pad layout), enabling reliable operation in engine control units and industrial PLCs without forced cooling. The SMA package supports MSL Level 1 handling and 260 °C lead-free reflow per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin for 24 V nominal systems. |
| VBR (min/max) | 24.4 V / 26.9 V at 1 mA - Verified avalanche onset range ensuring consistent turn-on across production lots and temperature. |
| VC @ IPPM | 35.5 V at 14.1 A - Clamped voltage during 500 W surge; limits stress on downstream 36 V-rated ICs. |
| PPPM | 500 W - Peak pulse power handling with 10/1000 µs waveform; meets ISO 7637-2 Pulse 1 & 2a requirements. |
| IFSM | 40 A - Non-repetitive forward surge rating (8.3 ms half-sine); supports inrush current suppression in DC-DC input stages. |
| TJ max. | 150 °C - Maximum junction temperature; enables deployment in under-hood automotive environments. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with cathode band marking. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H). Matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to protected line ground or low-side reference; must route with low-inductance trace to minimize clamping overshoot. |
| Cathode | Reverse-biased terminal / clamping node | Connected to the line being protected (e.g., 24 V rail); polarity band identifies this terminal; reversal causes permanent failure. |
Key Features
| Feature | Design Value |
|---|---|
| Low incremental surge resistance | <1.5 Ω typical - minimizes VC rise during high di/dt transients, improving clamping precision for fast-edge ESD events. |
| Glass passivated junction | Stable VBR over life and temperature - eliminates parameter drift in extended automotive duty cycles (−40 °C to +125 °C ambient). |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C / 60% RH - eliminates bake requirements prior to reflow, reducing manufacturing cost and risk. |
| AEC-Q101 qualification path | Available via HE3/HM3 suffix variants - enables direct qualification reuse for automotive ECUs without additional reliability testing. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump transients (ISO 7637-2 Pulse 5a) on 24 V battery-fed ECUs. IC Role / Device Role / Timing Role: Shunt clamping device placed between battery rail and DC-DC input stage. Use Value: Limits voltage to ≤35.5 V during 120 V/500 ms surges, preventing damage to 40 V-input buck controllers. |
Use Scenario: Guarding analog output lines of pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: Fast-response overvoltage clamp on 4–20 mA current-loop outputs. Use Value: Responds in <1 ns to 1 kV EFT bursts, maintaining sensor accuracy by limiting excursion to <36 V. |
| Consumer Power Adapter Input | Telecom DC Feeder Line Protection |
Use Scenario: Protecting primary-side rectifier and controller ICs in universal-input AC/DC adapters. IC Role / Device Role / Timing Role: Secondary-side TVS on DC bus after bridge rectifier. Use Value: Absorbs 500 W lightning-induced surges (IEC 61000-4-5) without degradation, extending adapter MTBF. |
Use Scenario: Safeguarding PoE-powered equipment connected to outdoor telecom cabinets. IC Role / Device Role / Timing Role: DC feed line protector on 48 V PSE output. Use Value: Clamps induced surges from nearby lightning strikes to <36 V, preserving IEEE 802.3af/at compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J22A-M3/61 | Halogen-free, RoHS-compliant variant with identical electrical specs and thermal performance. | No difference in circuit function or layout; selected only where halogen-free BOM compliance is mandated. | Choose M3/61 for green electronics programs requiring halogen-free materials without compromising surge rating. |
| SMA5J22AHE3_A/61 | AEC-Q101 qualified version with same VWM, VBR, and PPPM; includes extended reliability testing (HTOL, TC, UHAST). | Required for automotive safety-critical modules (e.g., ADAS power supplies); not certified for commercial use only. | Select HE3_A/61 when automotive qualification is mandatory; avoid for non-automotive designs due to higher cost and longer lead times. |
Compared with SMA5J22A-E3/61, the M3/61 offers identical protection performance with halogen-free construction, while the HE3_A/61 adds automotive-grade reliability validation - neither requires PCB changes, but HE3_A/61 mandates full AEC-Q101 documentation traceability.
Availability
SMA5J22A-E3/61 is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interface design, and telecom DC feeder protection requiring stable component supply, RoHS compliance, and SMT manufacturability.
Supply support for SMA5J22A-E3/61 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 high-reliability, high-power-density solutions.
The SMA5J series was engineered for robust transient suppression in space-constrained, high-surge environments - targeting automotive, industrial, and telecom applications where 500 W clamping and AEC-Q101 readiness are essential.
FAQ
What is the maximum clamping voltage of the SMA5J22A-E3/61 under standard test conditions?
The SMA5J22A-E3/61 has a maximum clamping voltage (VC) of 35.5 V when subjected to its rated peak pulse current of 14.1 A using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream components see no more than 35.5 V during surge events - critical for safeguarding 36 V-rated power management ICs in the SMA5J22A-E3/61 protection zone.
Is the SMA5J22A-E3/61 suitable for automotive applications?
The SMA5J22A-E3/61 itself is not AEC-Q101 qualified, but Vishay offers the pin-compatible SMA5J22AHE3_A/61 variant with full AEC-Q101 certification. For non-safety-critical automotive subsystems (e.g., infotainment power rails), the SMA5J22A-E3/61 may be used with customer-specific validation; however, the SMA5J22A-E3/61 is explicitly rated for commercial-grade operation per its datasheet.
What is the thermal resistance of the SMA5J22A-E3/61, and how does it affect layout?
The SMA5J22A-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on the recommended 5.0 mm × 5.0 mm copper pads per terminal. To maintain TJ ≤ 150 °C during repetitive surges, PCB layout must allocate ≥25 mm² of 2-oz copper per pad - undersized traces or insufficient copper will cause thermal runaway and premature failure of the SMA5J22A-E3/61.
How does the SMA5J22A-E3/61 differ from the bidirectional SMA5J22CA variant?
The SMA5J22A-E3/61 is unidirectional and features a cathode band for polarity identification, while the SMA5J22CA is bidirectional with no polarity marking and symmetric clamping in both directions. Their VWM differs: SMA5J22A-E3/61 is rated at 22 V, whereas SMA5J22CA is rated at 17.5 V - making them non-interchangeable without circuit redesign. The SMA5J22A-E3/61 is intended for DC line protection; SMA5J22CA suits AC or differential signal lines.
What packaging format is supplied for the SMA5J22A-E3/61?
The SMA5J22A-E3/61 is supplied in 7-inch diameter plastic tape and reel packaging, with a base quantity of 1800 units per reel (ordering code /61). The tape complies with EIA-481-D standards, and the component is oriented with cathode band facing outward for automated pick-and-place verification - ensuring correct placement during SMT assembly of the SMA5J22A-E3/61.
SMA5J22A-E3/61 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:
- 1
- Bidirectional Channels:
- -
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J22A-E3/61 FAQ
1.How can I place an order for SMA5J22A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J22A-E3/61 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 SMA5J22A-E3/61 reliable?
The price and inventory of SMA5J22A-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J22A-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J22A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J22A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J22A-E3/61?
SMA5J22A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J22A-E3/61 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 SMA5J22A-E3/61?
For technical support, including SMA5J22A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J22A-E3/61 requirements.
6.How does Aetrix verify that SMA5J22A-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J22A-E3/61 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 SMA5J22A-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J22A-E3/61?
All SMA5J22A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J22A-E3/61, 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 SMA5J22A-E3/61 part is unused and in its original packaging.
Return procedure for SMA5J22A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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