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SA15A-E3/73
Vishay General Semiconductor - Diodes Division
TVS DIODE 15VWM 24.4VC DO204AC
32167 Pcs New Original In Stock
24.4V Clamp 20.5A Ipp Tvs Diode Through Hole DO-204AC (DO-15)
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SA15A-E3/73
Product Overview
978199
DiGi Electronics Part Number
SA15A-E3/73-DGManufacturer
Vishay General Semiconductor - Diodes Division
SA15A-E3/73
Description
TVS DIODE 15VWM 24.4VC DO204ACInventory
32167 Pcs New Original In Stock
24.4V Clamp 20.5A Ipp Tvs Diode Through Hole DO-204AC (DO-15)
CAD Models - PCB Symbols & Footprints
Quantity
Minimum 1
Minimum 1
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SA15A-E3/73 Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
Cut Tape (CT)
Series
TransZorb®
Product Status
Active
Type
Zener
Unidirectional Channels
1
Voltage - Reverse Standoff (Typ)
15V
Voltage - Breakdown (Min)
16.7V
Voltage - Clamping (Max) @ Ipp
24.4V
Current - Peak Pulse (10/1000µs)
20.5A
Power - Peak Pulse
500W
Power Line Protection
No
Applications
General Purpose
Capacitance @ Frequency
-
Operating Temperature
-55°C ~ 175°C (TJ)
Mounting Type
Through Hole
Package / Case
DO-204AC, DO-15, Axial
Supplier Device Package
DO-204AC (DO-15)
Base Product Number
SA15
Datasheet & Documents
HTML Datasheet
SA15A-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
Other Names
SA15A-E3/73-DG
SA15A-E3/73GICT
SA15A-E3/73GITB
Standard Package
2,000
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
DiGi Electronics's efficient logistics means I’ve never experienced late deliveries.
de desembre 02, 2025
The staff’s friendliness makes every visit enjoyable.
de desembre 02, 2025
I was surprised by how fast my order was shipped out and delivered.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the SA15A-E3/73 in high-temperature industrial environments above 100°C?
When designing the SA15A-E3/73 into high-temperature industrial applications, the primary risk is thermal derating of peak pulse power capability. While the device supports up to 175°C operating junction temperature, the 500W peak pulse rating is specified at 25°C—actual clamping performance degrades significantly at elevated temperatures. To mitigate risk, ensure conservative derating (e.g., 50% derating above 100°C), verify PCB copper layout provides adequate heatsinking through thermal vias or wide traces, and validate performance under worst-case surge events using transient thermal simulation or empirical testing with thermocouples on the lead frame. Avoid placing near heat-generating components like transformers or power resistors to prevent thermal runaway in sustained overload conditions.
How does the SA15A-E3/73 compare to the SMAJ15A for board-level transient protection in automotive 12V systems?
The SA15A-E3/73 and SMAJ15A both provide 15V reverse standoff for 12V automotive systems, but differ critically in package and surge robustness. The SA15A-E3/73’s DO-204AC axial package offers superior mechanical stability and power dissipation under repeated 10/1000µs surges compared to the SMAJ15A’s SMA surface-mount package, making it better suited for harsh environments with vibration or high-energy transients like load dump. However, the SMAJ15A allows denser board layouts. If space is constrained and surge levels are within IEC 61000-4-5 Class 3, SMAJ15A may suffice. For higher reliability in engine compartments or tow packages, SA15A-E3/73’s through-hole mounting and proven surge endurance at 20.5A Ipp make it the preferred choice despite larger footprint.
Can the SA15A-E3/73 be used as a direct replacement for the P6KE15A in legacy industrial equipment repairs?
The SA15A-E3/73 can generally replace the P6KE15A in legacy designs, but critical validation is required due to differences in clamping behavior and mechanical fit. Both are 500W, 15V standoff axial TVS diodes, but the SA15A-E3/73 has a tighter breakdown spec (min 16.7V vs P6KE15A’s 15.4V) and slightly lower max clamping voltage (24.4V vs 25.3V), which improves protection margin for downstream ICs. However, ensure the DO-204AC footprint matches the P6KE15A’s DO-204AL (they are often pin-compatible but not guaranteed). Also verify that the peak pulse current (20.5A) meets or exceeds the original design’s surge requirements, especially in older systems with degraded input filters. Always test in-circuit during repair validation.
What PCB layout practices should be followed to maximize surge current handling of the SA15A-E3/73 in power rail protection?
To maximize surge performance of the SA15A-E3/73 in power rail applications, minimize trace inductance between the TVS and protected line by placing it as close as possible to the entry point of the transient (e.g., connector or terminal block). Use wide, short traces (≥ 20 mil) and connect the cathode directly to the protected line and anode to ground with multiple vias to inner ground planes. Avoid daisy-chaining other components (like fuses or filters) between the TVS and transient source, as added inductance increases voltage overshoot beyond the 24.4V clamping level. Additionally, use at least 25μm copper thickness and consider paralleling with a slower upstream fuse (e.g., 1A fast-blow) to prevent latch-up during sustained overvoltage events.
What are the reliability risks of using the SA15A-E3/73 in outdoor IoT sensor nodes exposed to lightning-induced transients?
In outdoor IoT sensor nodes, the SA15A-E3/73 offers solid transient protection with its 500W rating and 20.5A peak pulse current, but relying on it alone for lightning-prone environments poses significant reliability risks. The 24.4V clamping voltage may still stress sensitive downstream ICs like microcontrollers or RF modules rated for 3.3V or 5V. For robust protection, use the SA15A-E3/73 as a secondary suppressor downstream of a primary protection device (e.g., gas discharge tube or polyfuse) to limit energy let-through. Implement coordinated staging with impedance (e.g., 1–5Ω resistor or ferrite bead) between stages to ensure proper voltage sequencing. Also, verify long-term endurance under repetitive surges, as frequent clamping events can degrade Zener junction integrity over time—consider periodic field monitoring or redundancy in mission-critical deployments.
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SA15A-E3/73 CAD Models
Vishay General Semiconductor - Diodes Division SA15A-E3/73 PCB symbols & footprints
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