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Vishay General Semiconductor - Diodes Division SA22CHE3/54
- Part No.:
- SA22CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA22CHE3/54.pdf
- Description:
- TVS DIODE 22VWM 39.4VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,471
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Product details
Overview
SA22CHE3/54 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 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 35.5 V maximum clamping voltage (VC) - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SA22CHE3/54 datasheet, SA22CHE3/54 pinout, SA22CHE3/54 application, or SA22CHE3/54 equivalent, this AEC-Q101 qualified TVS offers verified bi-directional surge suppression with RoHS-compliant matte tin leads, UL 94 V-0 molding, and validated thermal performance up to 175 °C junction temperature.
Technical Context
The SA22CHE3/54 operates as a bi-directional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction enables fast response time (<1 ns) and low incremental surge resistance, critical for protecting sensitive inputs against ESD and inductive switching spikes.
Rated for 500 W peak pulse power (10/1000 μs waveform, 0.01% duty cycle), it delivers stable clamping down to -55 °C and up to +175 °C, with 1.0 μA max reverse leakage at VWM and a ±5% VBR tolerance - meeting IEC 61000-4-2 (ESD) and IEC 61000-4-4 (EFT) immunity requirements in compact DO-15 form factor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR (min/max) | 24.4 V / 26.9 V at 1 mA - Confirmed breakdown threshold ensures predictable turn-on during transients; ±5% tolerance supports robust design margin. |
| VC @ IPPM | 35.5 V at 14.1 A - Clamped voltage seen by downstream components under full 500 W surge; limits stress on 3.3 V/5 V/24 V logic and drivers. |
| PPPM | 500 W - Peak pulse power handling per 10/1000 μs waveform; sufficient for ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surges. |
| IPPM | 14.1 A - Peak surge current capability; determines minimum series impedance required to limit energy into protected node. |
| TJ max. | +175 °C - Maximum junction temperature rating enables use in under-hood automotive and high-ambient industrial environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including HTOL, temperature cycling, and HAST; suitable for ASIL-B supporting functions. |
Pinout & Package
SA22CHE3/54 uses the DO-204AC (DO-15) axial-leaded package: molded epoxy case with matte tin-plated leads, UL 94 V-0 rated, 0.300" (7.6 mm) minimum lead length, and 0.140" (3.6 mm) maximum body diameter. Bi-directional construction means no cathode marking; terminals are non-polarized and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (either lead) | Bi-directional avalanche junction terminal | Either lead connects to protected line; symmetrical conduction allows placement without orientation check - simplifies automated assembly and field repair. |
| Leads (both) | Current-carrying interface to PCB | Matte tin plating meets J-STD-002 solderability; supports wave/solder reflow up to 275 °C for 10 s; JESD 201 Class 2 whisker resistance certified. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables <1 ns response time and stable VBR over lifetime - critical for suppressing fast ESD events before IC latch-up occurs. |
| 500 W peak pulse power (10/1000 μs) | Supports repeated surge exposure in motor drive feedback loops and CAN bus nodes without parameter drift or degradation. |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, body electronics, and ADAS subsystems - eliminates need for additional qualification testing. |
| RoHS-compliant HE3 suffix | Indicates AEC-Q101 grade with JESD 201 Class 2 whisker resistance - ensures long-term interconnect integrity in vibration-prone environments. |
| UL 94 V-0 molding compound | Prevents flame propagation during fault conditions - required for compliance in industrial control cabinets and EV charging infrastructure. |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V supply rails in engine control units (ECUs) and body control modules (BCMs) from load dump and inductive switching transients. IC Role / Device Role / Timing Role: Bi-directional clamping device placed across input rail and ground to shunt surge energy before it reaches LDOs, microcontrollers, or CAN transceivers. Use Value: Limits rail voltage to ≤35.5 V during 100 V/50 ms load dump events, preventing brownout reset and permanent damage to 3.3 V/5 V logic domains. |
Use Scenario: Safeguarding analog outputs (4–20 mA, 0–10 V) and digital I/O (RS-485, IO-Link) of pressure, temperature, and position sensors in factory automation. IC Role / Device Role / Timing Role: Line-side TVS placed between sensor output pin and system ground to absorb ESD strikes and cable discharge events. Use Value: Clamps transients to <36 V while maintaining <1 μA leakage at 22 V - preserves signal accuracy and avoids false triggering in precision measurement circuits. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Shielding Ethernet PHYs, PoE injectors, and DSL line drivers from lightning-induced surges entering via RJ-45 ports or telephone lines. IC Role / Device Role / Timing Role: Primary-level bi-directional suppressor mounted at connector entry point to divert common-mode transients before front-end protection ICs. Use Value: Handles 500 W surges without degradation, enabling single-stage protection architecture that reduces BOM count and board space vs. multi-stage designs. |
Use Scenario: Securing gate drivers and bootstrap circuits in BLDC motor inverters inside washing machines, HVAC fans, and power tools. IC Role / Device Role / Timing Role: Snubber-connected TVS across half-bridge switches to clamp shoot-through induced voltage spikes during PWM commutation. Use Value: Withstands repetitive 14.1 A pulses at 10 kHz switching frequencies - prevents cumulative junction heating and premature failure in high-duty-cycle applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A-E3/54 | Uni-directional; 22 V VWM, 26.7–29.5 V VBR, same DO-214AC package but surface-mount; lower IPPM (12.9 A). | Requires polarity-aware layout; unsuitable for AC-coupled or floating signal lines where bi-directional clamping is mandatory. | Select when board space is constrained and circuit topology guarantees unidirectional voltage polarity. |
| 1.5KE22CA | Same bi-directional function; 22 V VWM, 24.4–26.9 V VBR; DO-201AD package (larger, higher thermal mass); 500 W rating retained. | Higher thermal inertia allows longer surge duration tolerance; less suitable for high-density layouts due to 0.260" body length. | Choose for legacy designs requiring proven field reliability or where elevated power derating margin is prioritized over size. |
Compared with SMAJ22A-E3/54 and 1.5KE22CA, SA22CHE3/54 uniquely combines AEC-Q101 qualification, DO-15 axial form factor, and bi-directional operation - making it optimal for new automotive and industrial designs demanding qualification traceability, through-hole serviceability, and polarity-agnostic protection.
Availability
SA22CHE3/54 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom line cards, and consumer appliance motor drives requiring stable component supply with full AEC-Q101 documentation and RoHS compliance.
Supply support for SA22CHE3/54 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 passive components with emphasis on reliability, efficiency, and qualification rigor.
The SAxxCH series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for automotive and industrial transient suppression - delivering AEC-Q101 qualified, bi-directional, high-power surge protection in standardized axial packages.
FAQ
What is the polarity configuration of SA22CHE3/54?
SA22CHE3/54 is a bi-directional TVS diode with no polarity marking on the DO-204AC package. Both leads are functionally identical, allowing installation in either orientation. This eliminates risk of reverse installation during manual or automated assembly and supports protection of AC-coupled or floating signal paths where voltage polarity may reverse - a key advantage over uni-directional alternatives like SMAJ22A-E3/54.
Does SA22CHE3/54 meet automotive qualification standards?
Yes, SA22CHE3/54 carries the HE3 suffix, confirming AEC-Q101 qualification per Vishay's documentation. It has passed stress tests including high-temperature operating life (HTOL), temperature cycling, and highly accelerated stress testing (HAST), validating its suitability for automotive powertrain, chassis, and body electronics applications up to ASIL-B functional safety levels.
What is the maximum clamping voltage of SA22CHE3/54 under surge conditions?
The maximum clamping voltage (VC) of SA22CHE3/54 is 35.5 V at 14.1 A peak pulse current (IPPM) using the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and represents the upper bound voltage imposed on protected circuitry during worst-case surge events - ensuring compatibility with 24 V systems and safeguarding downstream 3.3 V/5 V logic interfaces.
Can SA22CHE3/54 be used in place of SA22A or SA22CA?
No - SA22CHE3/54 is not a direct replacement for SA22A (uni-directional) or SA22CA (bi-directional, commercial grade). The HE3 suffix denotes AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, whereas SA22A and SA22CA lack these certifications. Substituting SA22CHE3/54 into non-automotive designs is permissible, but replacing it with non-HE3 variants in qualified systems voids compliance and reliability assurance.
What is the lead finish and solderability specification for SA22CHE3/54?
SA22CHE3/54 features matte tin-plated leads compliant with J-STD-002 for solderability and JESD 22-B102 for solder heat resistance. It withstands solder dip at 275 °C for up to 10 seconds and passes JESD 201 Class 2 whisker testing - ensuring reliable interconnect integrity in high-vibration environments such as automotive under-hood modules and industrial motor controllers.
SA22CHE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- 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):
- 22.7A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA22CHE3/54 FAQ
1.How can I place an order for SA22CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA22CHE3/54 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 SA22CHE3/54 reliable?
The price and inventory of SA22CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA22CHE3/54 is usually 5 days.
3.What payment methods are accepted for SA22CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA22CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA22CHE3/54?
SA22CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA22CHE3/54 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 SA22CHE3/54?
For technical support, including SA22CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA22CHE3/54 requirements.
6.How does Aetrix verify that SA22CHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA22CHE3/54 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 SA22CHE3/54 meets industry standards.
7.What is the process for return or replacement of SA22CHE3/54?
All SA22CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA22CHE3/54, 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 SA22CHE3/54 part is unused and in its original packaging.
Return procedure for SA22CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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