SM50T36AY STMicroelectronics TVS Diode (Uni-directional) (Diodes Moulded) In Stock
STMicroelectronics SM50T36AY is an automotive-grade 5000 W unidirectional TVS diode rated at 36 V in SMC package, compliant with ISO 7637-2 and MIL-STD-750 standards. Available from stock worldwide with fast shipping.
- Manufacturer
- STMicroelectronics
- Package
- Diodes Moulded
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- SM50T36AY Datasheet PDF
- Category
- TVS Diode (Uni-directional)
- Price
- From $0.7420(MOQ 10)
- Temp Range
- -55.0°C to 175.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Automotive-grade 5000 W peak pulse power dissipation for robust surge protection
- Breakdown voltage of 36 V (min 34.2 V, max 37.8 V) with clamping voltage up to 50.2 V
- Compliant with ISO 7637-2 and MIL-STD-750 standards for harsh automotive environments
- SMC (DO-214AB) package enabling compact PCB footprint in high-power designs
Applications
The SM50T36AY is widely used in automotive electronics to protect sensitive circuits from voltage transients on 24 V and 36 V supply rails, including ECU power lines, motor control modules, and battery management systems. Its high 5000 W peak pulse power rating makes it suitable for industrial power supplies, telecom equipment, and any application requiring robust transient voltage suppression against ESD and lightning surges.
Specifications
| Factory Lead Time | 21Weeks |
| YTEOL | 8 |
| Additional Feature | ISO 7637-2; MIL-STD-750 |
| Breakdown Voltage-Max | 37.8V |
| Breakdown Voltage-Min | 34.2V |
| Breakdown Voltage-Nom | 36V |
| Clamping Voltage-Max | 50.2V |
| Configuration | SINGLE, 1 CHANNEL |
| Diode Element Material | SILICON |
| Diode Type | TRANS VOLTAGE SUPPRESSOR DIODE |
| JEDEC-95 Code | DO-214AB |
| JESD-30 Code | R-PDSO-C2 |
| Non-rep Peak Rev Power Dis-Max | 5000W |
| Number of Elements | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Polarity | UNIDIRECTIONAL |
| Reference Standard | AEC-Q101; IEC-61000-4-2, 4-4; ISO 10605; ISO 16750 |
| Rep Pk Reverse Voltage-Max | 31V |
| Reverse Current-Max | 0.2 µA |
| Reverse Test Voltage | 31V |
| Surface Mount | YES |
| Technology | AVALANCHE |
| Terminal Form | C BEND |
| Terminal Position | DUAL |
| Package | Diodes Moulded |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8541.10.00.50 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the peak pulse power dissipation of the SM50T36AY, and how does it compare to standard TVS diodes?
The SM50T36AY offers 5000 W peak pulse power dissipation, significantly higher than many standard TVS diodes rated at 600 W or 1500 W. This elevated rating allows it to absorb large transient energy spikes on 36 V automotive supply rails without damage, making it suitable for 24 V and 36 V battery-powered systems in harsh environments.
Which automotive standards does the SM50T36AY comply with, and why does compliance matter for vehicle electronics?
The SM50T36AY complies with ISO 7637-2 and MIL-STD-750, both critical for automotive and military-grade electronics. ISO 7637-2 defines conducted electrical disturbances for road vehicles, ensuring the 36 V rated TVS diode can withstand load-dump pulses up to 50.2 V clamping voltage. MIL-STD-750 compliance further validates reliability in temperature ranges from -55 °C to +175 °C.
Can SM50T36AY protect a 24 V DC bus in a truck ECU design, given its breakdown voltage range?
Yes. With a nominal 36 V breakdown voltage (min 34.2 V, max 37.8 V) and 50.2 V maximum clamping voltage, the SM50T36AY provides an adequate margin above a 24 V nominal bus to avoid false triggering. The SMC package fits standard DO-214AB footprints on a PCB, and the 5000 W peak pulse rating covers typical load-dump transients in 12 V to 24 V truck and heavy-vehicle electrical systems.
What package does SM50T36AY use, and what are its key physical dimensions for PCB layout?
The SM50T36AY uses the SMC (DO-214AB) surface-mount package, which measures approximately 7.5 mm x 5.28 mm x 2.62 mm. This package supports 5000 W peak pulse dissipation through its large die-attach area and exposed copper pad, enabling efficient heat spreading across a standard 2-layer PCB copper pour without requiring additional heatsinks.
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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 10+ | $1.0700 | $10.70 |
| 100+ | $0.8900 | $89.00 |
| 500+ | $0.8570 | $428.48 |
| 1000+ | $0.8499 | $849.92 |
| 2500+ | $0.7660 | $1915.00 |
| 5000+ | $0.7420 | $3710.00 |
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