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Vishay General Semiconductor - Diodes Division SA22AHE3/54
- Part No.:
- SA22AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA22AHE3/54.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,283
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Product details
Overview
SA22AHE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for circuit protection against ESD and surge transients. It features 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, and 500 W peak pulse power rating with 10/1000 μs waveform.
For engineers reviewing the SA22AHE3/54 datasheet, SA22AHE3/54 pinout, SA22AHE3/54 application, or SA22AHE3/54 equivalent, this AEC-Q101-qualified TVS diode supports automotive-grade transient suppression in power rails, sensor interfaces, and DC input lines where robust 22 V-level clamping and low leakage (<1.0 μA at VWM) are required.
Technical Context
The SA22AHE3/54 operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 24.4–26.9 V breakdown range. Its glass-passivated junction ensures stable VBR tolerance and fast response (<1 ns), while the DO-15 package supports manual and automated through-hole assembly.
It delivers 35.5 V clamping at 14.1 A IPPM under 10/1000 μs surge, with 3.0 W steady-state power dissipation on infinite heatsink and -55 °C to +175 °C operating junction temperature - enabling use in under-hood automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 24.4 V / 26.9 V at 1 mA - defines reliable avalanche initiation window for predictable turn-on |
| VC @ IPPM | 35.5 V at 14.1 A - limits downstream voltage stress during 10/1000 μs transients |
| PPPM | 500 W - peak surge energy handling capability per single 10/1000 μs pulse |
| ID @ VWM | <1.0 μA - ultra-low leakage preserves signal integrity and minimizes standby power loss |
| TJ max. | +175 °C - enables placement near hot components in engine control units and power converters |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: DO-15 (DO-204AC), axial leaded, epoxy-molded, RoHS-compliant, matte tin-plated leads. Polarity indicated by cathode band (banded end = cathode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path) in unidirectional clamp configuration |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., 24 V rail); conducts surge current to ground when VREV > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR over lifetime and resistance to humidity-induced degradation |
| 500 W peak pulse power (10/1000 μs) | Handles IEC 61000-4-5 Level 4 surges (4 kV line-earth) without failure |
| AEC-Q101 qualification | Validated for automotive applications including powertrain and body electronics |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., load dump, inductive kick) |
| Solderable per J-STD-002/JESD 22-B102 | Compatible with standard wave and reflow soldering processes up to 275 °C for 10 s |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply lines in engine control modules from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery rail and downstream regulator/LDO input. Use Value: Limits voltage to ≤35.5 V during 14.1 A surge, preventing damage to 36 V-rated regulators and microcontrollers. | Use Scenario: Shielding analog output pins of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 μA) clamping diode connected between sensor output and ground. Use Value: Preserves signal accuracy during normal operation while suppressing ±8 kV contact ESD per IEC 61000-4-2. |
| DC Input Surge Protection | Telecom Line Card Protection |
Use Scenario: Safeguarding AC/DC adapter outputs feeding PoE injectors or LED drivers. IC Role / Device Role / Timing Role: Primary-stage TVS on 24–30 V DC input, upstream of filtering and regulation. Use Value: Absorbs 500 W surge energy without degradation, maintaining system uptime during lightning-induced surges. | Use Scenario: Protecting low-voltage bias rails (e.g., 22 V auxiliary supplies) on telecom line interface cards. IC Role / Device Role / Timing Role: Standoff-rated clamping element on isolated DC bias paths subject to induced transients. Use Value: Matches 22 V nominal rail with tight VBR tolerance (±5.1%), minimizing false triggering and ensuring margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A | Same VWM (22 V), but SMA package (SMT); lower IPPM (13.7 A) and VC (35.5 V); 400 W PPPM | Requires PCB redesign for surface-mount; better for space-constrained designs with automated assembly | Select SMAJ22A only if board layout supports SMT and thermal management allows lower power rating. |
| P6KE22A | Same DO-15 package and VWM (22 V), but older series; higher VC (36.5 V), same 500 W PPPM, no AEC-Q101 qualification | Lacks automotive qualification; suitable for commercial/industrial use where AEC compliance is not mandated | Choose P6KE22A for cost-sensitive non-automotive applications where AEC-Q101 is unnecessary. |
Compared with SMAJ22A and P6KE22A, the SA22AHE3/54 uniquely combines AEC-Q101 qualification, DO-15 through-hole compatibility, and precise 22 V standoff with verified 35.5 V clamping - making it the preferred choice for automotive and high-reliability industrial deployments requiring drop-in replaceability and long-term supply stability.
Availability
SA22AHE3/54 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, and DC input surge protection requiring stable component supply across extended production lifecycles.
Supply support for SA22AHE3/54 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 protection devices with emphasis on reliability and automotive-grade performance.
The SAxxA series is part of Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of the SA22AHE3/54 under a 10/1000 μs surge?
The SA22AHE3/54 has a maximum clamping voltage (VC) of 35.5 V at 14.1 A peak pulse current (IPPM) under the standardized 10/1000 μs waveform. This value is measured per JEDEC standards and guarantees that protected circuits experience no more than 35.5 V during such transients - critical for safeguarding 36 V-tolerant ICs and regulators in automotive applications.
Is the SA22AHE3/54 qualified for automotive use?
Yes, the SA22AHE3/54 carries AEC-Q101 qualification, confirmed in Vishay's official documentation (Doc. #88378, Rev. 27-Sep-2021). This includes stress testing for temperature cycling, high-temperature reverse bias (HTRB), and ESD - validating its suitability for under-hood and chassis-mounted automotive electronics where reliability is mission-critical.
What does the "HE3" suffix indicate in SA22AHE3/54?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. Unlike base "E3" variants, HE3 parts undergo enhanced metallurgical screening for tin whisker mitigation - essential for long-life automotive and industrial systems operating above 85 °C ambient.
Can the SA22AHE3/54 be used in bidirectional configurations?
No, the SA22AHE3/54 is strictly unidirectional, as indicated by the "A" (not "CA") suffix. Bidirectional variants like SA22CA exist in the same family but feature symmetric breakdown in both polarities. Using SA22AHE3/54 in reverse-biased AC applications would result in forward conduction and potential failure.
What is the maximum leakage current of the SA22AHE3/54 at its rated stand-off voltage?
The SA22AHE3/54 exhibits a maximum reverse leakage current (ID) of 1.0 μA at its 22 V stand-off voltage (VWM), measured at TA = 25 °C. This ultra-low leakage ensures minimal impact on high-impedance sensor bias networks and preserves battery life in always-on automotive subsystems.
SA22AHE3/54 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:
- 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 ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA22AHE3/54 FAQ
1.How can I place an order for SA22AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA22AHE3/54 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 SA22AHE3/54 reliable?
The price and inventory of SA22AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA22AHE3/54 is usually 5 days.
3.What payment methods are accepted for SA22AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA22AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA22AHE3/54?
SA22AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA22AHE3/54 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 SA22AHE3/54?
For technical support, including SA22AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA22AHE3/54 requirements.
6.How does Aetrix verify that SA22AHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA22AHE3/54 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 SA22AHE3/54 meets industry standards.
7.What is the process for return or replacement of SA22AHE3/54?
All SA22AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA22AHE3/54, 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 SA22AHE3/54 part is unused and in its original packaging.
Return procedure for SA22AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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