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Vishay General Semiconductor - Diodes Division SA22CAHE3/54
- Part No.:
- SA22CAHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA22CAHE3/54.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,408
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Product details
Overview
SA22CAHE3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for clamping voltage transients on signal or power lines. It features 500 W peak pulse power (10/1000 μs), 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR at 1 mA), 14.1 A peak pulse current (IPPM), and 35.5 V maximum clamping voltage (VC) - used to protect MOSFETs and sensor interfaces in automotive ECUs.
For engineers reviewing the SA22CAHE3/54 datasheet, SA22CAHE3/54 pinout, SA22CAHE3/54 application, or SA22CAHE3/54 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, DO-15 mechanical compatibility, 175 °C max junction temperature, and low incremental surge resistance for robust ESD/lightning surge immunity in harsh environments.
Technical Context
The SA22CAHE3/54 operates as a silicon avalanche diode with glass-passivated junction, enabling symmetrical reverse/forward conduction for bidirectional transient suppression. Its clamping behavior is defined by VC = 35.5 V at IPPM = 14.1 A (10/1000 μs waveform), with temperature coefficient of 25 mV/°C for VBR.
It supports repetitive surge duty cycle ≤ 0.01 %, withstands 275 °C solder dip (10 s), and meets JESD 201 Class 2 whisker resistance. No polarity marking is present - consistent with bidirectional device convention per DO-15 packaging standard.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 24.4 V / 26.9 V at 1 mA - ensures reliable avalanche turn-on within specified tolerance band |
| IPPM | 14.1 A - peak surge current it safely shunts without failure under 10/1000 μs transient |
| VC | 35.5 V - clamped voltage seen by protected circuit during full-rated surge event |
| PPPM | 500 W - transient energy handling capacity for short-duration surges |
| TJ max | +175 °C - enables operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: DO-15 (DO-204AC), axial-leaded, epoxy-molded case with matte tin-plated leads. RoHS-compliant and qualified to UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | One end of symmetrical junction - no cathode marking; either lead serves as anode or cathode depending on transient polarity |
| Cathode | Current exit terminal in forward bias | Identical physical terminal as Anode; bidirectional operation means both terminals behave identically under reverse/forward transients |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress |
| 500 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly laid out with low-inductance paths |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring zero-failure field performance |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a), improving protection margin |
| DO-15 mechanical standardization | Ensures drop-in replacement compatibility across legacy and new designs using industry-standard axial footprint |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protecting 24 V CAN/LIN bus interface lines from load dump and inductive switching spikes in vehicle door modules. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to limit transient voltage before reaching transceiver IC. Use Value: Clamps surges up to 35.5 V while sustaining 500 W pulses - prevents latch-up or permanent damage to NXP TJA1043 or ST TLE6232G transceivers. | Use Scenario: Safeguarding 24 V DC digital input channels against field-wiring induced transients in factory automation cabinets. IC Role / Device Role / Timing Role: Front-end protection element on optocoupler input side, absorbing energy from relay coil flyback or cable ESD events. Use Value: Withstands 14.1 A peak pulse current and maintains < 1 μA leakage at 22 V - preserves input threshold accuracy and avoids false triggering. |
| Automotive Occupant Detection System | Medical Patient Monitor Sensor Interface |
Use Scenario: Shielding capacitive seat occupancy sensors from ESD and battery disconnect transients in automotive seating systems. IC Role / Device Role / Timing Role: Low-capacitance (< 100 pF) bidirectional clamp on analog sensor trace between ASIC and electrode pad. Use Value: 22 V VWM aligns with sensor supply rail; 35.5 V VC ensures downstream amplifier remains within safe operating area during ±8 kV contact discharge. | Use Scenario: Protecting ECG/SpO₂ analog front-end inputs from defibrillator-induced surges and hospital-grade ESD events. IC Role / Device Role / Timing Role: First-line transient suppressor on patient-connected leads prior to instrumentation amplifier input stage. Use Value: AEC-Q101 qualification correlates with high-reliability medical standards; 175 °C TJ max supports sterilization-compatible PCB assembly processes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22CA | Same VWM (22 V), but SMA package (surface-mount); lower IPPM (12.3 A) and higher VC (35.7 V) | Requires PCB re-layout for SMD placement; better suited for space-constrained consumer electronics vs. through-hole industrial modules | Select SMAJ22CA only if board real estate is constrained and thermal management via copper pour is feasible |
| P6KE22CA | Higher PPPM (600 W), same DO-15 package; VBR range wider (23.1–25.5 V), VC = 36.1 V | Offers greater surge margin for infrequent high-energy events (e.g., lightning-induced surges in outdoor enclosures) | Choose P6KE22CA when system-level testing reveals marginal margin with SA22CAHE3/54 under worst-case 6 kV IEC 61000-4-5 tests |
Compared with SMAJ22CA and P6KE22CA, the SA22CAHE3/54 delivers optimized balance of AEC-Q101 compliance, DO-15 mechanical robustness, and precise 22 V clamping window - making it preferred for automotive and industrial through-hole designs where qualification and serviceability are prioritized over miniaturization or extreme energy rating.
Availability
SA22CAHE3/54 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, and medical sensor interface circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SA22CAHE3/54 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 for demanding applications.
The SAxxCA series is part of Vishay's TRANSZORB® TVS portfolio, engineered specifically for bidirectional transient suppression in automotive, industrial, and telecom infrastructure where AEC-Q101 validation and DO-15 mechanical ruggedness are mandatory.
FAQ
What is the polarity configuration of SA22CAHE3/54?
The SA22CAHE3/54 is a bidirectional TVS diode with no polarity marking on the DO-15 package. Both terminals are functionally identical, allowing symmetrical clamping of positive and negative transients. This eliminates orientation concerns during manual or automated assembly and simplifies schematic symbol usage compared to unidirectional variants like SA22AHE3/54.
Does SA22CAHE3/54 meet automotive qualification standards?
Yes, SA22CAHE3/54 is AEC-Q101 qualified - verified per stress test conditions including high-temperature reverse bias, temperature cycling, and ESD robustness. The "HE3" suffix explicitly denotes AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, making SA22CAHE3/54 suitable for engine control units, body modules, and ADAS subsystems where automotive-grade reliability is required.
What is the maximum clamping voltage of SA22CAHE3/54 under rated surge conditions?
The maximum clamping voltage (VC) of SA22CAHE3/54 is 35.5 V at IPPM = 14.1 A with a 10/1000 μs waveform. This value represents the peak voltage imposed on the protected circuit during full-rated transient events and is critical for ensuring downstream ICs remain within absolute maximum ratings - especially for 3.3 V or 5 V logic interfacing via level-shifting buffers.
Can SA22CAHE3/54 replace SA22AHE3/54 in existing designs?
No - SA22CAHE3/54 is bidirectional while SA22AHE3/54 is unidirectional, meaning they differ fundamentally in conduction behavior. Substituting SA22CAHE3/54 for SA22AHE3/54 may cause unintended forward conduction in DC-biased lines. Always verify circuit topology: use SA22CAHE3/54 only where symmetrical transient protection is needed, such as AC-coupled or floating signal paths.
What is the lead finish and soldering compatibility of SA22CAHE3/54?
SA22CAHE3/54 features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. It supports wave and hand soldering at 275 °C for up to 10 seconds (per JESD 22-B106), and passes JESD 201 Class 2 whisker testing - confirming long-term reliability in high-humidity or high-vibration environments typical of automotive and industrial deployments.
SA22CAHE3/54 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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 ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA22CAHE3/54 FAQ
1.How can I place an order for SA22CAHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA22CAHE3/54 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 SA22CAHE3/54 reliable?
The price and inventory of SA22CAHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA22CAHE3/54 is usually 5 days.
3.What payment methods are accepted for SA22CAHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA22CAHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA22CAHE3/54?
SA22CAHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA22CAHE3/54 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 SA22CAHE3/54?
For technical support, including SA22CAHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA22CAHE3/54 requirements.
6.How does Aetrix verify that SA22CAHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA22CAHE3/54 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 SA22CAHE3/54 meets industry standards.
7.What is the process for return or replacement of SA22CAHE3/54?
All SA22CAHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA22CAHE3/54, 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 SA22CAHE3/54 part is unused and in its original packaging.
Return procedure for SA22CAHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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