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1.5SMC36CAHE3/9AT
Vishay General Semiconductor - Diodes Division
TVS DIODE 30.8VWM 49.9VC SMC
70479 Pcs New Original In Stock
49.9V Clamp 30.1A Ipp Tvs Diode Surface Mount DO-214AB (SMCJ)
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5.0 / 5.0
- (453 Ratings)
1.5SMC36CAHE3/9AT
Product Overview
960500
DiGi Electronics Part Number
1.5SMC36CAHE3/9AT-DGManufacturer
Vishay General Semiconductor - Diodes Division
1.5SMC36CAHE3/9AT
Description
TVS DIODE 30.8VWM 49.9VC SMCInventory
70479 Pcs New Original In Stock
49.9V Clamp 30.1A Ipp Tvs Diode Surface Mount DO-214AB (SMCJ)
CAD Models - PCB Symbols & Footprints
Quantity
Minimum 1
Minimum 1
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1.5SMC36CAHE3/9AT Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
Tape & Reel (TR)
Series
1.5SMC, TransZorb®
Product Status
Active
Type
Zener
Bidirectional Channels
1
Voltage - Reverse Standoff (Typ)
30.8V
Voltage - Breakdown (Min)
34.2V
Voltage - Clamping (Max) @ Ipp
49.9V
Current - Peak Pulse (10/1000µs)
30.1A
Power - Peak Pulse
1500W (1.5kW)
Power Line Protection
No
Applications
-
Capacitance @ Frequency
-
Operating Temperature
-65°C ~ 150°C (TJ)
Grade
Automotive
Qualification
AEC-Q101
Mounting Type
Surface Mount
Package / Case
DO-214AB, SMC
Supplier Device Package
DO-214AB (SMCJ)
Base Product Number
1.5SMC36
Datasheet & Documents
HTML Datasheet
1.5SMC36CAHE3/9AT-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
112-1.5SMC36CAHE3/9ATTR
112-1.5SMC36CAHE3/9ATCT
1.5SMC36CAHE3/9AT-DG
112-1.5SMC36CAHE3/9ATDKR
Standard Package
3,500
Alternative Parts
View DetailsPART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
1.5SMC36CA-E3/9AT
Vishay General Semiconductor - Diodes Division
73692
1.5SMC36CA-E3/9AT-DG
0.1694
Direct
1.5SMC36CA TR13 PBFREE
Central Semiconductor Corp
3116
1.5SMC36CA TR13 PBFREE-DG
0.1514
MFR Recommended
1.5SMC36CA-M3/57T
Vishay General Semiconductor - Diodes Division
1032
1.5SMC36CA-M3/57T-DG
0.1694
Direct
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Stock availability is never an issue, facilitating our rapid project execution.
Dec 02, 2025
They prioritize customer satisfaction with their comprehensive support.
Dec 02, 2025
Their prices provide excellent savings, and their product consistency is truly impressive.
Dec 02, 2025
Simple and clear pricing structures make budgeting easier and more accurate.
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Frequently Asked Questions (FAQ)
What are the key design risks when using the 1.5SMC36CAHE3/9AT in an industrial power supply with voltage transients exceeding 40V peak?
When using the 1.5SMC36CAHE3/9AT in industrial power supplies, a critical risk is sustained overvoltage events above 30.8V reverse standoff that can cause premature aging or thermal runaway. Although the 1.5SMC36CAHE3/9AT clamps at 49.9V max, repeated transients near or above this level—even within pulse current ratings—can degrade the TVS over time due to cumulative thermal stress. To mitigate, ensure transient energy is limited by upstream impedance or combine with a sacrificial stage (like a varistor) for bulk energy absorption. Always verify layout thermal performance and derate peak pulse current by at least 20% at junction temperatures above 100°C.
Can the 1.5SMC36CAHE3/9AT reliably replace the SMCJ1.5KE36CA-TP in automotive 12V systems, and what design adjustments are needed?
Yes, the 1.5SMC36CAHE3/9AT can replace the SMCJ1.5KE36CA-TP in 12V automotive systems as both are AEC-Q101 qualified bidirectional 36V TVS diodes in SMC packages. However, the 1.5SMC36CAHE3/9AT has slightly lower clamping voltage (49.9V vs. 51.6V typical) and smaller package thermal mass than the larger DO-214AA (SMC-JE), so it may exhibit faster thermal saturation under repetitive 10/1000µs surges. Ensure PCB copper area matches the 1.5SMC36CAHE3/9AT datasheet thermal recommendations and consider derating peak pulse current to 25A for high-ambient environments (>125°C).
How does junction temperature affect clamping performance of the 1.5SMC36CAHE3/9AT during extended operation in engine compartment applications?
In engine compartment applications, sustained high junction temperatures (above 125°C) can shift the breakdown voltage of the 1.5SMC36CAHE3/9AT due to temperature coefficients of the Zener junction, resulting in earlier conduction and increased leakage current. While the device is rated for -65°C to 150°C TJ, prolonged exposure above 130°C risks parametric drift and reduced surge lifetime. To maintain reliability, minimize thermal coupling from nearby components, use thermal vias under the SMC pad, and validate worst-case transient response at end-of-life temperature extremes with margin.
What are the replacement options for the 1.5SMC36CAHE3/9AT if facing long lead times, and how do parameter differences impact circuit reliability?
If facing lead time issues, consider TPSMC36CA or 1.5SMC36CA-E3/57T as drop-in alternatives to the 1.5SMC36CAHE3/9AT. The TPSMC36CA offers similar AEC-Q101 and clamping specs but may have tighter production variances. Avoid the SMCJ1.5KE36CA-TP unless verifying compatibility with the DO-214AB to DO-214AA footprint change. Key differences include minor variations in dynamic resistance and leakage—review transient response with oscilloscope validation under load dump simulations. Always confirm MSL-1 compliance in humid environments to prevent popcorning during reflow, especially for non-Vishay sources.
What PCB layout practices are essential to maximize surge current handling in the 1.5SMC36CAHE3/9AT for 24V rail protection?
To maximize surge current handling in the 1.5SMC36CAHE3/9AT for 24V rails, use wide, short traces (minimize inductance) from the protected line to the TVS, with direct routing to ground plane vias within 3mm of the cathode. Provide at least 12 mm² of copper pad area per terminal to aid heat dissipation during repetitive 10/1000µs pulses. Avoid daisy-chaining other components between the TVS and protected node, and ensure the 1.5SMC36CAHE3/9AT is the first line of defense. Poor layout can increase clamping voltage by 15–20% due to parasitic inductance, reducing effective protection.
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1.5SMC36CAHE3/9AT CAD Models
Vishay General Semiconductor - Diodes Division 1.5SMC36CAHE3/9AT PCB symbols & footprints
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