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SA24A-E3/54
Vishay General Semiconductor - Diodes Division
TVS DIODE 24VWM 38.9VC DO204AC
1427 Pcs New Original In Stock
38.9V Clamp 12.9A Ipp Tvs Diode Through Hole DO-204AC (DO-15)
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5.0 / 5.0
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SA24A-E3/54
Product Overview
1019197
DiGi Electronics Part Number
SA24A-E3/54-DGManufacturer
Vishay General Semiconductor - Diodes Division
SA24A-E3/54
Description
TVS DIODE 24VWM 38.9VC DO204ACInventory
1427 Pcs New Original In Stock
38.9V Clamp 12.9A Ipp Tvs Diode Through Hole DO-204AC (DO-15)
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Quantity
Minimum 1
Minimum 1
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SA24A-E3/54 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)
24V
Voltage - Breakdown (Min)
26.7V
Voltage - Clamping (Max) @ Ipp
38.9V
Current - Peak Pulse (10/1000µs)
12.9A
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
SA24
Datasheet & Documents
HTML Datasheet
SA24A-E3/54-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
112-SA24A-E3/54DKRINACTIVE
112-SA24A-E3/54DKR
SA24A-E3/54GITR
SA24A-E3/54-DG
112-SA24A-E3/54DKR-DG
SA24AE354
SA24A-E3/54GICT
Standard Package
4,000
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
Expédition ultra-rapide et réponse immédiate à toutes mes questions après l’achat. Très appréciable.
de desembre 02, 2025
Their customer support team handled my questions professionally and patiently.
de desembre 02, 2025
Great prices combined with professional customer support — highly recommend.
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Frequently Asked Questions (FAQ)
Can I use the SA24A-E3/54 TVS diode to replace a P6KE24A in a 24V industrial control circuit, and what are the key reliability risks if I do?
Yes, the SA24A-E3/54 is a direct functional replacement for the P6KE24A in most 24V applications due to nearly identical electrical characteristics—both are 24V unidirectional TVS diodes with similar breakdown (26.7V min) and clamping voltages (38.9V @ 12.9A). However, the SA24A-E3/54 is rated for 500W peak pulse power versus the P6KE24A’s 600W, which may pose a reliability risk under sustained or repetitive transient events. In high-energy surge environments (e.g., inductive load switching near motors or relays), this 100W deficit could lead to premature failure. Mitigate this by ensuring your system’s worst-case transient energy stays within the SA24A-E3/54’s 500W envelope, or add supplementary protection like an upstream fuse or series inductor.
What layout and thermal considerations should I account for when integrating the SA24A-E3/54 in a high-temperature automotive under-hood application operating near 150°C?
The SA24A-E3/54 supports a junction temperature up to 175°C, making it suitable for high-temp automotive use, but board-level thermal management is critical. Since it’s a through-hole DO-204AC package, ensure adequate copper area on the PCB pads to act as a heat sink—use thermal reliefs cautiously to avoid solder joint stress during temperature cycling. Keep trace widths generous (≥2mm for 1 oz copper) to reduce thermal resistance. Also, avoid placing heat-sensitive components within 10mm of the diode, as localized heating during transient events can elevate ambient temps. Verify actual operating TJ using thermal imaging or modeling, especially if transients occur frequently, as repetitive pulses can cause cumulative heating despite the wide -55°C to 175°C rating.
Is the SA24A-E3/54 suitable for protecting a 24V CAN bus line against ISO 7637-2 transients, and how does it compare to the SMAJ24A for this purpose?
The SA24A-E3/54 can provide basic protection for 24V CAN bus lines against low-energy ISO 7637-2 pulses (e.g., Pulse 1 and 2a), but it lacks the faster response and lower parasitic capacitance of surface-mount alternatives like the SMAJ24A. The SMAJ24A, in an SMA package, offers better high-frequency performance and tighter layout control, which is advantageous for maintaining signal integrity on high-speed CAN (up to 1 Mbps). Additionally, the SA24A-E3/54’s axial lead design introduces higher loop inductance, potentially reducing effectiveness against very fast ESD-like events. For robust CAN bus protection, consider pairing the SA24A-E3/54 with a dedicated TVS array or using the SMAJ24A if board space allows—especially in safety-critical systems where signal distortion or delayed clamping could compromise communication.
What are the risks of using the SA24A-E3/54 in a bidirectional voltage spike scenario, such as in a motor drive circuit with inductive kickback in both polarities?
The SA24A-E3/54 is a unidirectional TVS diode, meaning it only clamps positive transients relative to its cathode. In bidirectional scenarios—like motor drives where inductive kickback can generate both positive and negative voltage spikes—relying solely on this part leaves the circuit vulnerable to negative-going transients. Applying a negative surge exceeding the diode’s reverse standoff voltage (24V) can cause reverse breakdown and potential failure. To mitigate this, either use a bidirectional TVS (e.g., SMBJ24CA) or pair the SA24A-E3/54 with a second unidirectional TVS oriented in reverse (e.g., another SA24A-E3/54 with anode and cathode swapped). This dual-diode configuration creates effective bidirectional clamping but increases board space and cost—evaluate based on your system’s surge polarity profile.
How does the SA24A-E3/54 perform in repetitive transient environments like relay coil switching, and what derating practices should I follow to ensure long-term reliability?
In repetitive transient applications such as relay or solenoid switching, the SA24A-E3/54’s 500W peak power rating must be derated to avoid cumulative thermal damage. Although it can handle 12.9A pulses at 10/1000µs, frequent triggering (e.g., >1 pulse per second) reduces effective lifespan due to junction heating. As a best practice, derate the peak pulse power by 50% for continuous or high-frequency transients—limiting usable energy to ~250W. Monitor ambient temperature closely; at 125°C ambient, the allowable pulse energy drops significantly. Implement snubber circuits (RC networks) across inductive loads to reduce transient magnitude and frequency, thereby lowering stress on the SA24A-E3/54. Regular field failure analysis shows that un-derated TVS diodes in relay circuits often fail shorted, risking downstream component damage—so proactive derating and system-level suppression are essential.
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