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Vishay General Semiconductor - Diodes Division SMA5J22-E3/61
- Part No.:
- SMA5J22-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J22-E3/61.pdf
- Description:
- TVS DIODE 22VWM 39.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,465
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Product details
Overview
SMA5J22-E3/61 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for high-energy surge protection on power and signal lines. It features a 22 V standoff voltage (VWM), 24.4–26.9 V breakdown range (VBR), 35.5 V clamping voltage at 14.1 A peak pulse current (IPPM), 500 W peak pulse power (10/1000 µs), and AEC-Q101 qualification - deployed in automotive power rail and sensor interface protection.
For engineers reviewing the SMA5J22-E3/61 datasheet, SMA5J22-E3/61 pinout, SMA5J22-E3/61 application, or SMA5J22-E3/61 equivalent, key selection criteria include unidirectional polarity, 150 °C max junction temperature, 80 °C/W thermal resistance (junction-to-ambient), RoHS-compliant matte tin plating, 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 leakage at 22 V, then rapidly avalanches when transient voltage exceeds its 24.4–26.9 V breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance and low incremental surge resistance.
The device delivers 500 W peak pulse power handling per 10/1000 µs waveform with 35.5 V clamping at 14.1 A, enabling robust suppression of ISO 7637-2 pulse 1/2a/5a transients in 12 V automotive systems. It meets MSL Level 1 (260 °C reflow) and JESD201 Class 1A whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 24.4 V / 26.9 V - Breakdown voltage range at 1 mA test current; defines turn-on threshold tolerance |
| VC @ IPPM | 35.5 V - Clamping voltage at 14.1 A peak pulse current; determines protected circuit's maximum overvoltage |
| PPPM | 500 W - Peak pulse power dissipation capability for 10/1000 µs transients |
| IPPM | 14.1 A - Maximum non-repetitive peak surge current the device can safely divert |
| TJ max | +150 °C - Maximum junction temperature; sets thermal derating limit for sustained operation |
| RθJA | 80 °C/W - Junction-to-ambient thermal resistance; used to calculate temperature rise under DC leakage or repetitive surges |
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; cathode indicated by band marking; footprint compatible with standard SMA land pattern (5.0 mm × 5.0 mm copper pads per terminal).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode (banded end) | Reverse-biased blocking terminal | Connected to protected line (e.g., 12 V rail or signal trace); avalanche conduction occurs here during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| AEC-Q101 qualification | Validated for automotive-grade use including temperature cycling, HTRB, and ESD testing per stress test conditions |
| Low profile DO-214AC (SMA) package | Enables high-density PCB layout and compatibility with automated pick-and-place equipment |
| 80 °C/W RθJA | Allows thermal modeling of junction temperature rise under combined DC leakage and transient duty cycles |
| 1 µA max ID @ VWM | Minimizes standby power loss and avoids false triggering in low-power sensor interfaces |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump and jump-start transients on 12 V battery-fed ECUs and body control modules. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between battery rail and ground, clamping spikes to ≤35.5 V within nanoseconds. Use Value: Prevents damage to downstream LDOs, microcontrollers, and CAN transceivers by limiting overvoltage to safe levels defined in ISO 7637-2. | Use Scenario: Protecting analog input pins of industrial temperature/pressure sensors exposed to ESD and inductive switching noise. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA) TVS connected between signal line and ground, activated only during >24.4 V events. Use Value: Maintains signal integrity during normal operation while providing sub-100 ns response to 8 kV contact ESD per IEC 61000-4-2. |
| Consumer Power Adapter Input Stage | Telecom Line Card Surge Protection |
Use Scenario: Safeguarding AC-DC adapter primary-side rectifier outputs against lightning-induced surges on mains-connected devices. IC Role / Device Role / Timing Role: Unidirectional TVS placed across bulk capacitor, absorbing 500 W pulses without degradation. Use Value: Enables compliance with IEC 61000-4-5 Level 3 (2 kV line-earth) without requiring additional series impedance. | Use Scenario: Shielding Ethernet PHY and PoE controller inputs from induced surges on outdoor telecom line cards. IC Role / Device Role / Timing Role: Fast-response (nanosecond) clamping device mounted at connector entry point, referenced to chassis ground. Use Value: Limits transient voltage to <35.5 V, preventing latch-up or gate oxide rupture in sensitive 3.3 V/1.8 V logic interfaces. |
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 | AEC-Q101 qualified variant with identical electrical specs; differs only in whisker test class (1A vs. 2A) and qualification documentation | Required for automotive OEM designs mandating full AEC-Q101 certification evidence | Select SMA5J22AHE3/61 when formal qualification reports and extended reliability data are contractually required |
| SMCJ22A-E3/57T | Higher 1500 W PPPM, larger DO-214AB (SMC) package, same VWM/VBR/VC ratings | Used where higher single-pulse energy absorption is needed, e.g., alternator load dump in heavy-duty vehicles | Choose SMCJ22A-E3/57T only if system-level surge testing exceeds 500 W capability of SMA5J22-E3/61 |
Compared with SMA5J22AHE3/61, the SMA5J22-E3/61 omits formal AEC-Q101 test reporting but shares identical electrical performance and packaging; versus SMCJ22A-E3/57T, it trades 3× pulse power headroom for 40 % smaller board area and lower thermal mass - optimal for space-constrained 12 V automotive modules.
Availability
SMA5J22-E3/61 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and consumer power adapter designs requiring stable component supply, RoHS compliance, and AEC-Q101-qualified alternatives.
Supply support for SMA5J22-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, MOSFETs, and protection devices with emphasis on reliability and automotive-grade validation.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained automotive and industrial environments, delivering 500 W pulse handling in the compact DO-214AC footprint.
FAQ
What is the polarity configuration of the SMA5J22-E3/61?
The SMA5J22-E3/61 is a unidirectional TVS diode: its cathode is marked by a band on the DO-214AC package body, and it conducts only when the cathode is at higher potential than the anode. This configuration blocks forward current during normal operation and clamps reverse transients - distinct from bi-directional variants like SMA5J22CA which lack polarity marking and conduct in both directions.
Does the SMA5J22-E3/61 meet automotive qualification standards?
Yes, the SMA5J22-E3/61 is AEC-Q101 qualified, verified through standardized stress tests including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD). Its qualification applies specifically to the "E3" suffix variant per Vishay documentation, confirming suitability for under-hood and cabin electronics in passenger vehicles and light commercial vehicles.
What is the maximum clamping voltage of the SMA5J22-E3/61 under surge conditions?
The SMA5J22-E3/61 has a maximum clamping voltage (VC) of 35.5 V at its rated peak pulse current (IPPM) of 14.1 A, measured using the standard 10/1000 µs double-exponential waveform. This value defines the upper voltage limit imposed on protected circuits during transient events and is guaranteed across the full operating temperature range of −55 °C to +150 °C.
How does the thermal resistance of the SMA5J22-E3/61 affect PCB layout?
The SMA5J22-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal. To maintain TJ ≤ 150 °C under worst-case DC leakage or repetitive surges, designers must ensure adequate copper area and avoid excessive ambient temperature buildup - undersized pads or enclosed enclosures may raise RθJA beyond this value and risk thermal runaway.
Is the SMA5J22-E3/61 compatible with lead-free reflow processes?
Yes, the SMA5J22-E3/61 is rated for lead-free reflow with a maximum peak temperature of 260 °C per J-STD-020, classified as MSL Level 1. Its matte tin-plated leads comply with J-STD-002 and JESD22-B102 solderability requirements, and the package passes JESD201 Class 1A whisker testing - ensuring reliable interconnect integrity after multiple reflow cycles.
SMA5J22-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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J22-E3/61 FAQ
1.How can I place an order for SMA5J22-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J22-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 SMA5J22-E3/61 reliable?
The price and inventory of SMA5J22-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 SMA5J22-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J22-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J22-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J22-E3/61?
SMA5J22-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J22-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 SMA5J22-E3/61?
For technical support, including SMA5J22-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J22-E3/61 requirements.
6.How does Aetrix verify that SMA5J22-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J22-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 SMA5J22-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J22-E3/61?
All SMA5J22-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J22-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 SMA5J22-E3/61 part is unused and in its original packaging.
Return procedure for SMA5J22-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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