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Vishay General Semiconductor - Diodes Division SMA5J22C-E3/5A
- Part No.:
- SMA5J22C-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J22C-E3/5A.pdf
- Description:
- TVS DIODE 22VWM 39.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,135
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Product details
Overview
SMA5J22C-E3/5A 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 current. It is used in automotive sensor protection and industrial I/O interface circuits.
For engineers reviewing the SMA5J22C-E3/5A datasheet, SMA5J22C-E3/5A pinout, SMA5J22C-E3/5A application, or SMA5J22C-E3/5A equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, RoHS-compliant matte tin plating, MSL Level 1 rating, and thermal resistance (RθJA = 80 °C/W) under standard PCB pad layout.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, with electrical characteristics defined identically in forward and reverse directions. Its glass-passivated junction ensures stable breakdown behavior, low incremental surge resistance, and fast response time (<1 ns) to ESD and lightning-induced transients.
Designed for surface-mount automated assembly, it meets J-STD-020 MSL Level 1 (peak reflow 260 °C) and JESD201 Class 1A whisker testing. The device is rated for -55 °C to +150 °C operating junction temperature and requires no polarity marking due to bi-directional symmetry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - maximum continuous reverse stand-off voltage before clamping begins |
| VBR min/max | 24.4 V / 26.9 V at 1 mA - guaranteed breakdown range defining turn-on threshold |
| VC @ IPPM | ≤35.5 V at 14.1 A - clamped voltage during 10/1000 µs surge, limiting stress on downstream ICs |
| PPPM | 500 W - peak pulse power handling per single transient event (10/1000 µs waveform) |
| RθJA | 80 °C/W - thermal resistance junction-to-ambient on standard 0.2" × 0.2" copper pads |
| TJ max | +150 °C - maximum allowable junction temperature for reliable long-term operation |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
DO-214AC (SMA) surface-mount package: molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-002 and JESD22-B102; no polarity marking required for bi-directional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient conduction path | No functional distinction - terminals interchangeable; conducts surge current equally in either direction |
| Case (body) | Non-electrical mechanical interface | Thermally conductive but electrically isolated housing; provides mechanical anchoring and heat dissipation path |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable breakdown voltage and low leakage (<1 μA at VWM) over lifetime and temperature |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving clamping precision and system robustness |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control units and ADAS sensor interfaces |
| MSL Level 1 rating | Enables direct placement into high-temperature lead-free reflow processes without pre-baking |
| Bi-directional symmetry | Eliminates polarity concerns in AC-coupled or floating signal lines, simplifying layout and BOM management |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed between signal line and ground, absorbing transients before they reach sensitive analog front-ends or communication ICs. Use Value: Maintains signal integrity by clamping surges to ≤35.5 V while supporting 22 V nominal bus operation - critical for AEC-Q100-compliant system design. | Use Scenario: Safeguarding PLC digital input modules against field-wiring induced surges from relay coils or motor drives. IC Role / Device Role / Timing Role: Transient suppression element across input terminals, shunting surge energy away from optocoupler inputs and microcontroller GPIOs. Use Value: Enables robust 24 V DC industrial input stage design with 500 W surge capacity and <1 ns response - compliant with IEC 61000-4-5 Level 3. |
| Consumer Power Adapter Output | Telecom Line Card Protection |
Use Scenario: Secondary-side overvoltage protection in USB PD and multi-output AC/DC adapters exposed to output short-circuit recovery spikes. IC Role / Device Role / Timing Role: Fast-acting clamp on regulated DC outputs, preventing latch-up or damage to downstream USB controllers and charging ICs. Use Value: Delivers 35.5 V clamping at 14.1 A with minimal capacitance - avoids signal distortion while meeting UL 1449 Type 4 requirements. | Use Scenario: Protecting Ethernet PHY interfaces and DSL line drivers from lightning-induced common-mode surges on twisted-pair telecom lines. IC Role / Device Role / Timing Role: Bi-directional TVS array element placed across differential pairs, referenced to chassis ground to suppress mode conversion. Use Value: Symmetric clamping enables balanced protection without skew; DO-214AC footprint supports high-density line card layouts. |
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 | Identical electrical specs and packaging; CA suffix explicitly denotes bi-directional version per Vishay naming convention | No functional difference - SMA5J22C-E3/5A and SMA5J22CA-E3/5A refer to same device; "CA" is canonical designation | Select SMA5J22CA-E3/5A when cross-referencing official Vishay documentation or distributor catalogs using standardized suffix |
| 1.5SMC22CA | Same VWM/VBR/VC ratings but in larger DO-214AB (SMC) package; higher RθJA (50 °C/W) and 1500 W PPPM rating | Better thermal performance and surge margin; requires larger PCB area and different pad layout | Choose 1.5SMC22CA only if system-level surge testing exceeds 500 W or thermal constraints demand lower junction rise |
Compared with SMA5J22C-E3/5A, SMA5J22CA-E3/5A is a nomenclature-aligned variant with identical performance, while 1.5SMC22CA offers higher surge capacity in a physically larger package - requiring layout revision but enabling extended lifetime in high-stress environments.
Availability
SMA5J22C-E3/5A is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and consumer power adapter output clamping requiring stable component supply and AEC-Q101 compliance.
Supply support for SMA5J22C-E3/5A 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, MOSFETs, and protection devices with emphasis on reliability, power density, and automotive qualification.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained applications, targeting automotive, industrial, and telecom systems where fast response, bi-directional symmetry, and AEC-Q101 validation are mandatory.
FAQ
What does the "C" suffix mean in SMA5J22C-E3/5A?
The "C" in SMA5J22C-E3/5A indicates bi-directional configuration - confirming symmetrical clamping behavior in both polarities. This matches Vishay's official designation SMA5J22CA-E3/5A, where "CA" explicitly denotes bi-directional operation. The device has no polarity marking and is functionally identical to the CA-suffixed part.
Is SMA5J22C-E3/5A qualified for automotive use?
Yes, SMA5J22C-E3/5A is AEC-Q101 qualified, having passed stress tests including temperature cycling, high-temperature reverse bias, and humidity bias. It is rated for -55 °C to +150 °C junction temperature and intended for automotive applications such as sensor interfaces, body control modules, and infotainment power rails.
What is the clamping voltage of SMA5J22C-E3/5A at its rated surge current?
The SMA5J22C-E3/5A clamps to a maximum of 35.5 V when subjected to its rated 14.1 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured at the device terminals and defines the upper voltage limit imposed on protected circuitry during transient events.
Does SMA5J22C-E3/5A require polarity-aware PCB layout?
No - SMA5J22C-E3/5A is a bi-directional TVS diode with symmetrical electrical characteristics in both directions. Its DO-214AC package has no cathode band or polarity marking, and either terminal may be connected to signal or ground without affecting performance or reliability.
What is the thermal resistance of SMA5J22C-E3/5A under standard mounting conditions?
SMA5J22C-E3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard JEDEC test board conditions and is critical for estimating steady-state temperature rise during sustained leakage or repeated surge events.
SMA5J22C-E3/5A 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J22C-E3/5A FAQ
1.How can I place an order for SMA5J22C-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J22C-E3/5A 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 SMA5J22C-E3/5A reliable?
The price and inventory of SMA5J22C-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J22C-E3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J22C-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J22C-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J22C-E3/5A?
SMA5J22C-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J22C-E3/5A 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 SMA5J22C-E3/5A?
For technical support, including SMA5J22C-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J22C-E3/5A requirements.
6.How does Aetrix verify that SMA5J22C-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J22C-E3/5A 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 SMA5J22C-E3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J22C-E3/5A?
All SMA5J22C-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J22C-E3/5A, 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 SMA5J22C-E3/5A part is unused and in its original packaging.
Return procedure for SMA5J22C-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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