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Vishay General Semiconductor - Diodes Division SMA5J22HE3/61
- Part No.:
- SMA5J22HE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J22HE3/61.pdf
- Description:
- TVS DIODE 22VWM 39.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,200
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Product details
Overview
SMA5J22HE3/61 from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AC (SMA) 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), 35.5 V clamping voltage at 14.1 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform. It is AEC-Q101 qualified and used to protect automotive sensor interfaces against ESD and load dump transients.
For engineers reviewing the SMA5J22HE3/61 datasheet, SMA5J22HE3/61 pinout, SMA5J22HE3/61 application, or SMA5J22HE3/61 equivalent, key selection criteria include clamping performance under 14.1 A surge, bi-directional symmetry, AEC-Q101 qualification status, thermal resistance (RθJA = 80 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
The SMA5J22HE3/61 operates as a bi-directional avalanche diode, exhibiting symmetrical reverse and forward conduction above its breakdown threshold in both directions. Its glass-passivated junction ensures stable VBR tolerance and low leakage (<1.0 µA at 22 V), while the DO-214AC package supports MSL Level 1 handling and 260 °C reflow peak temperature.
It delivers 500 W transient suppression capability per 10/1000 µs waveform with a clamping ratio (VC/VBR) of ~1.45, and maintains operation across -55 °C to +150 °C junction temperature range. The device is not polarity-marked due to bi-directional construction and requires no external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - maximum continuous reverse voltage before clamping begins; defines operating margin for 24 V automotive systems. |
| VBR min/max | 24.4 V / 26.9 V - guaranteed avalanche onset range at 1 mA test current; ensures predictable turn-on across production lot. |
| VC @ IPPM | 35.5 V at 14.1 A - clamped voltage during full-rated 500 W surge; limits downstream IC stress during ISO 7637-2 Pulse 1/2a events. |
| PPPM | 500 W - peak pulse power handling with 10/1000 µs waveform; meets IEC 61000-4-5 Level 4 surge immunity requirements. |
| TJ max | +150 °C - maximum junction temperature; enables use in under-hood automotive environments without derating. |
| RθJA | 80 °C/W - thermal resistance junction-to-ambient on standard 5.0 mm × 5.0 mm pads; informs board-level thermal design for repeated surge duty. |
Pinout & Package
DO-214AC (SMA) surface-mount package: molded epoxy case meeting UL 94 V-0, matte tin-plated leads solderable per J-STD-002, no polarity marking (bi-directional).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bi-directional avalanche terminals | Identical electrical behavior in either orientation; no cathode band; installed without polarity consideration. |
| Case | Non-conductive body | No thermal or electrical connection to PCB substrate; thermal path relies solely on soldered leads. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness-enables direct use in ASIL-B sensor modules. |
| Bi-directional symmetry | Identical VBR, VC, and IPPM in both directions-eliminates layout polarity constraints and simplifies PCB routing for differential or AC-coupled lines. |
| Low incremental surge resistance | Enables tight clamping (35.5 V at 14.1 A) with minimal voltage overshoot-critical for protecting 3.3 V/5 V logic interfaces downstream. |
| MSL Level 1 rating | Supports standard SMT reflow up to 260 °C peak without preconditioning-reduces manufacturing complexity and avoids moisture-related popcorning. |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting ABS wheel speed sensor outputs exposed to inductive switching noise and battery load dump transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bi-directional TVS clamp placed directly at connector entry point to shunt surges before reaching signal conditioning amplifier. Use Value: Clamps transients to ≤35.5 V while sustaining 500 W pulses, preventing latch-up or gate oxide damage in downstream op-amps and ADCs. | Use Scenario: Guarding CAN_H/CAN_L differential pair against ESD (IEC 61000-4-2 ±8 kV contact) and fast transient bursts in factory automation nodes. IC Role / Device Role / Timing Role: Paired SMA5J22HE3/61 devices (one per line) provide symmetrical overvoltage protection without affecting CAN signal integrity or common-mode range. Use Value: Sub-1 ns response time and <1.0 µA leakage at 22 V preserve bus DC bias and minimize false dominant detection during idle states. |
| Telecom Line Card Surge Suppression | Consumer Appliance Motor Drive Feedback |
Use Scenario: Safeguarding RS-485 transceivers on telecom base station line cards subjected to lightning-induced surges on long outdoor runs. IC Role / Device Role / Timing Role: Primary protection stage ahead of secondary GDT or polymer PTC, absorbing bulk energy before downstream components. Use Value: 500 W PPPM rating and 80 °C/W RθJA allow sustained multi-pulse operation without thermal runaway on standard FR4 PCBs. | Use Scenario: Shielding hall-effect rotor position feedback signals in BLDC motor drives from commutation spikes generated by high-dI/dt MOSFET switching. IC Role / Device Role / Timing Role: Point-of-entry protection on low-voltage analog feedback traces routed near noisy power stages. Use Value: 22 V VWM provides sufficient margin above 15 V supply rails while clamping spikes to 35.5 V-preventing comparator saturation and timing errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J22AHE3/61 | Same electrical specs and AEC-Q101 qualification; differs only in packaging suffix notation (HE3 vs. HE3/61 denotes same reel size and tape configuration). | No functional difference; identical use cases and board-level implementation. | Select SMA5J22HE3/61 when ordering from standard Vishay preferred P/N list with 7" tape and reel delivery. |
| SMC5J22CA | Higher power rating (1500 W PPPM), larger DO-214AB (SMC) package, same VWM/VBR/VC specs; RθJA = 35 °C/W vs. 80 °C/W. | Better suited for single-event high-energy threats (e.g., ISO 7637-2 Pulse 5a); requires larger PCB area and higher copper mass. | Choose SMC5J22CA where system-level surge testing exceeds 500 W or thermal budget allows larger footprint. |
Compared with SMA5J22HE3/61, SMA5J22AHE3/61 is functionally identical but uses alternate P/N formatting, while SMC5J22CA offers triple the surge power in a physically larger package-making it appropriate for higher-threat environments where board space permits.
Availability
SMA5J22HE3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, telecom line card protection, and consumer appliance motor control requiring stable component supply and AEC-Q101 compliance.
Supply support for SMA5J22HE3/61 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, MOSFETs, and protection devices with emphasis on reliability, power density, and automotive qualification.
The SMA5J series is engineered specifically for high-power-density transient suppression in space-constrained automotive and industrial applications, balancing 500 W surge capability with SMA package manufacturability and AEC-Q101 validation.
FAQ
What is the clamping voltage of the SMA5J22HE3/61 under full-rated surge current?
The SMA5J22HE3/61 clamps to 35.5 V at its rated peak pulse current of 14.1 A (10/1000 µs waveform). This value is measured per JEDEC standards and guarantees maximum voltage seen by protected circuitry during worst-case surge events, enabling robust design margin for 24 V system interfaces.
Is the SMA5J22HE3/61 suitable for automotive applications?
Yes, the SMA5J22HE3/61 is AEC-Q101 qualified and explicitly rated for automotive use. Its -55 °C to +150 °C operating range, bi-directional symmetry, and validated reliability testing-including temperature cycling and HTRB-make it appropriate for under-hood and cabin sensor protection in passenger vehicles and commercial fleets.
Does the SMA5J22HE3/61 have polarity markings on the package?
No, the SMA5J22HE3/61 has no polarity marking because it is a bi-directional TVS diode. The DO-214AC (SMA) package is unmarked, and the device functions identically regardless of orientation during PCB placement-simplifying assembly and eliminating risk of reverse installation.
What is the maximum leakage current of the SMA5J22HE3/61 at its stand-off voltage?
The SMA5J22HE3/61 exhibits a maximum reverse leakage current of 1.0 µA at its 22 V stand-off voltage (VWM), measured at 25 °C. This ultra-low leakage preserves signal integrity on high-impedance sensor lines and minimizes standby power loss in battery-operated systems.
How does the thermal performance of the SMA5J22HE3/61 compare to larger package alternatives?
The SMA5J22HE3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W on standard 5.0 mm × 5.0 mm copper pads. While higher than SMC-packaged alternatives (e.g., 35 °C/W), this value is optimized for compact layouts and remains effective for intermittent surge duty cycles typical in automotive and industrial protection.
SMA5J22HE3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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)
SMA5J22HE3/61 FAQ
1.How can I place an order for SMA5J22HE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J22HE3/61 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 SMA5J22HE3/61 reliable?
The price and inventory of SMA5J22HE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J22HE3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J22HE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J22HE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J22HE3/61?
SMA5J22HE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J22HE3/61 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 SMA5J22HE3/61?
For technical support, including SMA5J22HE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J22HE3/61 requirements.
6.How does Aetrix verify that SMA5J22HE3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J22HE3/61 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 SMA5J22HE3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J22HE3/61?
All SMA5J22HE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J22HE3/61, 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 SMA5J22HE3/61 part is unused and in its original packaging.
Return procedure for SMA5J22HE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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