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1.5KE22A-E3/73
Vishay General Semiconductor - Diodes Division
TVS DIODE 18.8VWM 30.6VC 1.5KE
7141 Pcs New Original In Stock
30.6V Clamp 49A Ipp Tvs Diode Through Hole 1.5KE
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5.0 / 5.0
- (280 Ratings)
1.5KE22A-E3/73
Product Overview
940684
DiGi Electronics Part Number
1.5KE22A-E3/73-DGManufacturer
Vishay General Semiconductor - Diodes Division
1.5KE22A-E3/73
Description
TVS DIODE 18.8VWM 30.6VC 1.5KEInventory
7141 Pcs New Original In Stock
30.6V Clamp 49A Ipp Tvs Diode Through Hole 1.5KE
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Minimum 1
Minimum 1
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1.5KE22A-E3/73 Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
-
Series
TransZorb®
Product Status
Active
Type
Zener
Unidirectional Channels
1
Voltage - Reverse Standoff (Typ)
18.8V
Voltage - Breakdown (Min)
20.9V
Voltage - Clamping (Max) @ Ipp
30.6V
Current - Peak Pulse (10/1000µs)
49A
Power - Peak Pulse
1500W (1.5kW)
Power Line Protection
No
Applications
General Purpose
Capacitance @ Frequency
-
Operating Temperature
-55°C ~ 175°C (TJ)
Mounting Type
Through Hole
Package / Case
DO-201AA, DO-27, Axial
Supplier Device Package
1.5KE
Base Product Number
1.5KE22
Datasheet & Documents
HTML Datasheet
1.5KE22A-E3/73-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8541.10.0080
Additional Information
Standard Package
1,000
Alternative Parts
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MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
앞으로도 계속 이용하고 싶은 신뢰할 수 있는 공급처입니다.
Dec 02, 2025
포장 역시 견고하고 깔끔하며, 배송 추적 시스템이 편리해서 매우 만족스럽습니다.
Dec 02, 2025
客服跟進非常及時，每次都能獲得詳細的解答，讓我購物很放心。
Dec 02, 2025
Delivered on time consistently, their logistics service proves their professionalism and dedication.
Dec 02, 2025
Their commitment to transparency in pricing is highly reassuring.
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Frequently Asked Questions (FAQ)
What are the key design risks when replacing a failed 1N6375A TVS diode with the 1.5KE22A-E3/73 in an industrial power supply?
When substituting the 1N6375A with the 1.5KE22A-E3/73, engineers must evaluate the higher peak pulse current (49A vs. ~30A) and clamp voltage (30.6V vs. ~26V) to ensure downstream components aren't exposed to overvoltage during transients. While the 1.5KE22A-E3/73 offers superior surge handling, its higher clamping level may exceed the voltage tolerance of sensitive ICs like microcontrollers or gate drivers. Confirm that your circuit can tolerate this voltage margin under worst-case transient events, and verify PCB footprint compatibility—DO-201AA vs. DO-41—as mechanical fit and heat dissipation differ. Always simulate or test under real surge conditions (e.g., IEC 61000-4-5) before finalizing the 1.5KE22A-E3/73 in the design.
How does the high junction temperature rating of the 1.5KE22A-E3/73 impact its performance in under-hood automotive applications?
The 1.5KE22A-E3/73 supports a junction temperature range up to 175°C, making it suitable for under-hood automotive environments where ambient temperatures exceed 125°C. However, sustained high-temperature operation reduces long-term reliability due to accelerated thermal degradation of the silicon junction and package materials. To mitigate risk, ensure adequate PCB copper pour for heat dissipation and derate the peak pulse power—operate below 1.5kW under continuous thermal stress. Monitor derating curves from the datasheet and validate in thermal chambers with pulsed surge loads to avoid premature failure. The DO-201AA package’s axial leads help with mechanical stress relief due to CTE mismatches, further enhancing reliability in thermal cycling conditions.
Can the 1.5KE22A-E3/73 be used in parallel to increase surge current capability in high-energy transient protection circuits?
Paralleling 1.5KE22A-E3/73 diodes to increase total Ipp is generally not recommended due to imbalance in clamping voltage and dynamic resistance. Even minor manufacturing variances cause one device to conduct earlier, forcing it to absorb most of the surge energy, leading to thermal runaway. If higher surge capacity is needed, consider using a single higher-rated device like the 3KP22A instead. If parallel use is unavoidable, add small balancing resistors in series with each 1.5KE22A-E3/73 to equalize current sharing—but this increases clamping voltage and reduces protection efficacy. Always test under actual transient waveforms (e.g., 10/1000μs) to validate the configuration.
What are the selection trade-offs between the 1.5KE22A-E3/73 and Littelfuse 1.5KE22CA for bidirectional transient protection?
The 1.5KE22A-E3/73 is unidirectional, meaning it only protects against negative transients when oriented correctly, whereas the Littelfuse 1.5KE22CA is bidirectional, protecting against both positive and negative surges. If your circuit experiences AC transients or signal line reversals (e.g., RS-485, CAN bus), the Littelfuse part offers simpler integration. However, the 1.5KE22A-E3/73 allows independent control over protection polarity and may dissipate heat more predictably in DC systems. Verify polarity constraints in your design: misapplication of the unidirectional 1.5KE22A-E3/73 on AC lines will result in catastrophic failure during negative surges. Always confirm the transient mode (unidirectional vs. bidirectional) per IEC 61000-4-2/4-5 before selecting.
How does the DO-201AA package of the 1.5KE22A-E3/73 affect PCB layout and thermal performance in high-density designs?
The axial DO-201AA package of the 1.5KE22A-E3/73 requires more board space than surface-mount TVS options like SMAJ22A and limits routing flexibility in high-density layouts. However, it provides superior thermal mass and heat dissipation through its leads, especially when mounted with large copper pads or heat traces. To optimize thermal performance, use wide PCB traces (≥ 2mm) and consider thermal vias to inner ground planes. Be mindful of mechanical stress—avoid rigid mounting in areas prone to vibration. While less space-efficient, the 1.5KE22A-E3/73’s through-hole design offers better surge reliability in harsh environments compared to smaller packages, making it ideal for industrial or outdoor applications where longevity under repeated transients is critical.
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1.5KE22A-E3/73 CAD Models
Vishay General Semiconductor - Diodes Division 1.5KE22A-E3/73 PCB symbols & footprints
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