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Vishay General Semiconductor - Diodes Division SA22C-E3/73
- Part No.:
- SA22C-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA22C-E3/73.pdf
- Description:
- TVS DIODE 22VWM 39.4VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,940
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Product details
Overview
SA22C-E3/73 from Vishay General Semiconductor is a bi-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for clamping voltage transients on signal or power lines. It features 5.0 V stand-off voltage (VWM), 6.4–7.07 V breakdown voltage (VBR) at 10 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. It is used in automotive sensor interfaces and industrial I/O protection where bidirectional surge immunity is required.
For engineers reviewing the SA22C-E3/73 datasheet, SA22C-E3/73 pinout, SA22C-E3/73 application, or SA22C-E3/73 equivalent, this page delivers verified electrical parameters, polarity behavior, thermal derating guidance, AEC-Q101 qualification status, and direct alternative options for ESD and lightning surge protection design.
Technical Context
The SA22C-E3/73 implements a glass-passivated silicon junction optimized for fast response (<1 ps) to transient overvoltages in both polarities. Its bi-directional architecture eliminates need for polarity orientation during board placement and supports symmetric clamping across AC-coupled or floating lines.
It operates within -55 °C to +175 °C junction temperature range, with 3.0 W steady-state power dissipation at TL = 75 °C and 175 °C maximum junction temperature. The device meets JESD22-B106 solder dip requirements (275 °C, 10 s) and JESD201 Class 1A whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse/forward voltage before conduction begins; defines operating window for protected circuitry. |
| VBR (min/max) | 24.4 V / 26.9 V at IT = 1.0 mA - Confirmed breakdown threshold ensures reliable triggering above normal line voltage swings. |
| IPPM | 14.1 A (10/1000 µs waveform) - Peak surge current handling capacity determines survivability against IEC 61000-4-5 Level 4 surges. |
| VC | ≤35.5 V at IPPM - Clamping voltage limits stress on downstream ICs; margin vs. 24 V rail ensures safe operation. |
| PPPM | 500 W - Peak pulse power rating enables robust protection against repetitive transients up to 0.01% duty cycle. |
| TJ max | +175 °C - High junction temperature rating supports under-hood automotive and high-ambient industrial deployment. |
| Leakage (ID) | ≤1.0 µA at VWM - Ultra-low reverse leakage avoids signal distortion or bias shift in precision analog paths. |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, molded epoxy case meeting UL 94 V-0. Matte tin-plated leads; no polarity marking (bi-directional).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction terminals | No functional distinction between leads; either terminal serves as anode or cathode depending on transient polarity - simplifies layout and eliminates orientation errors. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable, low-noise avalanche performance over lifetime and temperature; resists moisture-induced degradation. |
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces per stress test requirements. |
| 500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 4th-level surge immunity (4 kV line-earth, 2 kV line-line) without derating in standard PCB layouts. |
| Low incremental clamping resistance | Ensures minimal voltage overshoot during fast-rising transients (e.g., ESD, relay bounce), critical for protecting 3.3 V/5 V logic inputs. |
| RoHS-compliant, matte tin leads | Meets J-STD-002 and JESD22-B102 solderability standards; compatible with lead-free reflow and wave soldering processes. |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and temperature/pressure sensor outputs from load dump and inductive switching spikes in 12 V vehicle systems. IC Role / Device Role: Bi-directional voltage clamp placed across differential signal pair or supply rail to divert surge energy to ground. Use Value: With 22 V VWM and 35.5 V clamping, SA22C-E3/73 safeguards 24 V-rated interface ICs while avoiding false triggering during normal 13.5–14.5 V alternator operation. |
Use Scenario: Shielding 4–20 mA current loop receivers and ADC front-ends in programmable logic controllers exposed to field wiring surges. IC Role / Device Role: Primary transient suppressor mounted at connector entry point, shunting surge current before it reaches precision op-amps or isolators. Use Value: 14.1 A IPPM and 500 W PPPM enable compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) without additional series impedance. |
| Telecom Line Card Protection | Consumer Appliance Motor Control |
|
Use Scenario: Guarding Ethernet PHY magnetics and PoE controller inputs against lightning-induced common-mode transients on outdoor-facing ports. IC Role / Device Role: Bi-directional TVS placed between transformer center-taps and chassis ground to clamp mode-conversion surges. Use Value: Symmetric VBR (24.4–26.9 V) ensures matched clamping in both directions, preserving signal integrity on full-duplex links. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines and HVAC blowers connected to microcontroller GPIOs. IC Role / Device Role: Low-capacitance TVS across motor terminals or H-bridge outputs to absorb inductive kickback without affecting PWM timing. Use Value: 175 °C TJ max and 3.0 W PD allow mounting near heat-generating motor drivers without thermal runaway risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22CA | Same DO-214AC (SMA) package; 22 V VWM, 24.4–26.9 V VBR, but lower 400 W PPPM and 12.3 A IPPM. | Surface-mount only; unsuitable for through-hole designs or high-reliability axial-leaded assemblies. | Select SMAJ22CA only when board space constraints require SMD footprint and 400 W rating suffices. |
| 1.5KE22CA | DO-201AD package; identical 22 V VWM and 24.4–26.9 V VBR, but higher 1500 W PPPM and 61.8 A IPPM; larger body and higher capacitance. | Better for high-energy surges (e.g., AC mains input), but excessive clamping voltage margin may reduce protection sensitivity. | Choose 1.5KE22CA when system-level surge tests exceed IEC 61000-4-5 Level 4 and board layout accommodates larger axial package. |
Compared with SMAJ22CA and 1.5KE22CA, SA22C-E3/73 delivers optimal balance of axial-leaded reliability, AEC-Q101 qualification, and precise 500 W/14.1 A surge handling - making it preferred for automotive and industrial through-hole TVS deployments where process control and long-term stability are critical.
Availability
SA22C-E3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, telecom line card protection, and consumer appliance motor control requiring stable component supply and traceable RoHS-compliant sourcing.
Supply support for SA22C-E3/73 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, automotive qualification, and industrial-grade performance.
The SAxxC series is engineered specifically for bi-directional transient suppression in harsh environments - targeting automotive, industrial automation, and telecom infrastructure where consistent clamping, thermal resilience, and AEC-Q101 validation are mandatory.
FAQ
What is the polarity configuration of SA22C-E3/73?
The SA22C-E3/73 is a bi-directional TVS diode with symmetrical avalanche characteristics in both forward and reverse bias. It has no cathode marking and functions identically regardless of lead orientation - enabling simplified PCB layout and eliminating assembly polarity errors. This behavior is confirmed in the Vishay datasheet Document Number 88378, Section "Polarity".
Does SA22C-E3/73 meet AEC-Q101 requirements?
Yes, SA22C-E3/73 is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet (Document Number 88378, page 3, Note 1). This qualification covers stress tests including HTGB, HTRB, TST, and mechanical shock - validating its suitability for automotive powertrain, chassis, and body electronics applications.
What is the maximum clamping voltage of SA22C-E3/73 at rated surge current?
The maximum clamping voltage (VC) of SA22C-E3/73 is 35.5 V at IPPM = 14.1 A (10/1000 µs waveform), per the Electrical Characteristics table on page 2 of the Vishay datasheet. This value defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Can SA22C-E3/73 be used in place of a unidirectional TVS like SA22A-E3/73?
No - SA22C-E3/73 is bi-directional and lacks polarity marking, while SA22A-E3/73 is unidirectional with cathode band and asymmetric conduction. Substituting them requires verifying circuit topology: SA22C-E3/73 suits AC-coupled or floating lines; SA22A-E3/73 is required for DC-biased rails where reverse blocking is essential. Datasheet Table 1 confirms distinct VBR test conditions.
What is the lead finish and solderability specification for SA22C-E3/73?
SA22C-E3/73 features matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards. It withstands solder dip at 275 °C for 10 seconds (per JESD22-B106) and passes JESD201 Class 1A whisker testing - ensuring robust intermetallic formation and long-term joint reliability in automated assembly.
SA22C-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- 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):
- 22.7A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA22C-E3/73 FAQ
1.How can I place an order for SA22C-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA22C-E3/73 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 SA22C-E3/73 reliable?
The price and inventory of SA22C-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA22C-E3/73 is usually 5 days.
3.What payment methods are accepted for SA22C-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA22C-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA22C-E3/73?
SA22C-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA22C-E3/73 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 SA22C-E3/73?
For technical support, including SA22C-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA22C-E3/73 requirements.
6.How does Aetrix verify that SA22C-E3/73 is sourced from the original manufacturer or authorized distributors?
All SA22C-E3/73 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 SA22C-E3/73 meets industry standards.
7.What is the process for return or replacement of SA22C-E3/73?
All SA22C-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA22C-E3/73, 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 SA22C-E3/73 part is unused and in its original packaging.
Return procedure for SA22C-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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