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Vishay General Semiconductor - Diodes Division SMA5J22AHE3/61
- Part No.:
- SMA5J22AHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J22AHE3/61.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,923
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Product details
Overview
SMA5J22AHE3/61 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 (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 μs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMA5J22AHE3/61 datasheet, SMA5J22AHE3/61 pinout, SMA5J22AHE3/61 application, or SMA5J22AHE3/61 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (via HE3 suffix), 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 μA leakage at 22 V), then rapidly avalanches below 35.5 V to divert transients induced by inductive switching or ESD. Its glass-passivated junction ensures stable breakdown and fast response (<1 ns), while the SMA package supports thermal dissipation up to 80 °C/W (junction-to-ambient).
The device is rated for non-repetitive 10/1000 μs surges only, with derating above 25 °C per Fig. 2; it is not intended for continuous forward conduction - forward voltage is 3.5 V at 25 A, but IFSM is limited to 40 A (8.3 ms half-sine). Polarity is marked by cathode band; bidirectional variants use "CA" suffix and lack marking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - maximum reverse working voltage before clamping begins; defines safe operating range for protected circuitry. |
| VBR min/max | 24.4 V / 26.9 V at 1 mA - guaranteed avalanche onset window; ensures consistent triggering across production lots. |
| VC @ IPPM | 35.5 V at 14.1 A - clamped voltage during 10/1000 μs surge; determines maximum stress on downstream components. |
| PPPM | 500 W - peak transient energy handling capacity; enables protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3 surges. |
| TJ max | +150 °C - maximum junction temperature; supports operation in under-hood automotive and industrial environments. |
| Package | SMA (DO-214AC) - surface-mount package with 0.208" x 0.157" footprint; compatible with J-STD-020 MSL level 1 reflow (260 °C peak). |
| AEC-Q101 | Qualified - validated for automotive reliability including HTOL, TC, UHAST, and bond strength; ordering code HE3 confirms qualification. |
Pinout & Package
Two-terminal unidirectional TVS diode in SMA (DO-214AC) package. Cathode is marked by a band on the body; anode is unmarked end. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, with whisker resistance per JESD 201 Class 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink node | Connected to protected line; conducts avalanche current to ground or lower-potential rail during overvoltage events. |
| Anode (unmarked end) | Reference/return node | Typically tied to system ground or common return path; completes clamping loop during transient suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMA package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment without height interference. |
| Glass-passivated junction | Ensures long-term stability of VBR and low parameter drift over temperature and lifetime, critical for automotive field reliability. |
| 500 W peak pulse power | Supports robust protection against high-energy transients such as load dump (ISO 16750-2) and inductive kickback in 12 V/24 V systems. |
| AEC-Q101 qualified (HE3) | Validated for automotive applications including engine control units, body electronics, and ADAS sensors requiring zero-failure tolerance. |
| MSL Level 1 rating | Allows single-reflow assembly without moisture sensitivity concerns; eliminates bake requirements and simplifies manufacturing flow. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump transients (up to 35 V, 400 ms) and alternator ripple. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between power rail and ground, clamping surges within 1 ns. Use Value: Limits voltage seen by downstream DC/DC converters and microcontrollers to ≤35.5 V, preventing latch-up or gate oxide damage. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional TVS on sensor output line referenced to system ground, absorbing ESD and cable discharge events. Use Value: Maintains signal integrity by suppressing ±8 kV contact ESD (IEC 61000-4-2) without affecting 4–20 mA loop accuracy or bandwidth. |
| Consumer Power Adapter Input Stage | Telecom Line Card Surge Suppression |
Use Scenario: Secondary-side overvoltage protection in AC/DC adapters for USB-C PD and laptop chargers. IC Role / Device Role / Timing Role: Standoff-rated TVS on +VOUT rail, triggered only during fault conditions like feedback loop failure or rectifier short. Use Value: Prevents catastrophic failure of downstream USB-PD controllers by clamping to 35.5 V before MOSFET breakdown occurs. |
Use Scenario: Front-end protection of Ethernet PHY or RS-485 transceivers exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS on differential pair or power line, coordinated with GDT or MOV for staged clamping. Use Value: Absorbs first 500 W of 10/1000 μs surge energy, reducing stress on secondary protection and enabling compliance with ITU-T K.21 Basic Level. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J22A-E3/61 | Same electrical specs and SMA package, but commercial-grade (non-AEC-Q101); no automotive qualification testing performed. | Approved for consumer and industrial use only; excluded from automotive BOMs requiring PPAP or AEC validation. | Select when cost sensitivity outweighs automotive qualification needs and ambient temperature stays ≤125 °C. |
| SMC5J22AHE3/61 | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package; higher thermal mass and RθJA = 35 °C/W vs. 80 °C/W. | Better suited for high-repetition surge environments or where board space allows larger footprint; not drop-in compatible due to pad layout mismatch. | Choose when thermal performance under repeated transients is critical and PCB real estate permits 2.5× larger footprint. |
Compared with SMA5J22AHE3/61, the E3/61 variant lacks AEC-Q101 validation and is unsuitable for automotive deployment, while the SMC5J22AHE3/61 offers superior thermal handling but requires redesign of mounting pads and increases board area by 150 %.
Availability
SMA5J22AHE3/61 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom line card surge suppression requiring stable component supply, AEC-Q101 compliance, and traceable lot-controlled sourcing.
Supply support for SMA5J22AHE3/61 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, efficiency, and application-specific optimization.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained automotive and industrial systems, delivering 500 W surge capability in the smallest possible surface-mount package.
FAQ
What is the clamping voltage of the SMA5J22AHE3/61 under a 10/1000 µs surge?
The SMA5J22AHE3/61 clamps to a maximum of 35.5 V when subjected to its rated peak pulse current of 14.1 A with a 10/1000 µs waveform. This value is measured at the device terminals under standardized test conditions per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SMA5J22AHE3/61 suitable for bidirectional transient protection?
No, SMA5J22AHE3/61 is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay specifies part numbers ending in "CA", such as SMA5J22CAHE3/61, which provides symmetrical clamping in both polarities and has no polarity marking.
Does SMA5J22AHE3/61 require special PCB layout considerations?
Yes - the SMA5J22AHE3/61 must be mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 500 W pulse power. Smaller pads cause excessive thermal rise and premature failure; trace inductance should also be minimized to preserve sub-ns response time.
What does the "HE3" suffix signify in SMA5J22AHE3/61?
The "HE3" suffix in SMA5J22AHE3/61 indicates RoHS-compliant construction and full AEC-Q101 qualification, including stress testing for high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - required for automotive under-hood and chassis applications.
Can SMA5J22AHE3/61 replace SMAJ22A in an existing design?
SMA5J22AHE3/61 offers higher peak pulse power (500 W vs. 400 W for SMAJ22A) and identical VWM/VBR/VC ratings, but requires verification of thermal pad layout and reflow profile compatibility. The SMA5J series uses the same DO-214AC outline, so mechanical fit is maintained, but electrical margin improvement is real and measurable.
SMA5J22AHE3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J22AHE3/61 FAQ
1.How can I place an order for SMA5J22AHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J22AHE3/61 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 SMA5J22AHE3/61 reliable?
The price and inventory of SMA5J22AHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J22AHE3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J22AHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J22AHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J22AHE3/61?
SMA5J22AHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J22AHE3/61 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 SMA5J22AHE3/61?
For technical support, including SMA5J22AHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J22AHE3/61 requirements.
6.How does Aetrix verify that SMA5J22AHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J22AHE3/61 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 SMA5J22AHE3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J22AHE3/61?
All SMA5J22AHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J22AHE3/61, 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 SMA5J22AHE3/61 part is unused and in its original packaging.
Return procedure for SMA5J22AHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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