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Vishay General Semiconductor - Diodes Division SM5S36A-E3/2D
- Part No.:
- SM5S36A-E3/2D
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM5S36A-E3/2D.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,039
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Product details
Overview
SM5S36A-E3/2D from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for automotive load dump protection in 12 V/24 V systems. It features a 36.0 V standoff voltage (VWM), 58.1 V clamping voltage at 62 A peak pulse current, 3600 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for under-hood reliability up to TJ = 175 °C.
For engineers reviewing the SM5S36A-E3/2D datasheet, SM5S36A-E3/2D pinout, SM5S36A-E3/2D application, or SM5S36A-E3/2D equivalent, key selection criteria include clamping performance under ISO 7637-2 load dump transients, DO-218AB thermal resistance (RθJC = 1.0 °C/W), and unidirectional polarity with heatsink-as-anode configuration.
Technical Context
The SM5S36A-E3/2D employs passivated anisotropic rectifier technology optimized for high-temperature stability and low leakage (<10 μA at VWM). Its junction design supports continuous operation from –55 °C to +175 °C and withstands 500 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine).
It delivers 3600 W peak pulse power with 10/1000 μs waveform and 2800 W with 10/10 000 μs waveform, meeting ISO 7637-2 test conditions for automotive electrical systems. The device is MSL Level 1 rated and qualified per JESD201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VC @ IPPM | 58.1 V - Clamping voltage at 62 A peak pulse current ensures downstream ICs stay below safe voltage thresholds |
| PPPM (10/1000 μs) | 3600 W - Sustains high-energy load dump surges without failure |
| RθJC | 1.0 °C/W - Enables efficient heat transfer to PCB copper pour or heatsink for thermal management |
| TJ max | +175 °C - Supports under-hood automotive placement without derating |
| ID @ VWM | <10 μA - Minimizes standby power loss in always-on vehicle modules |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive electronic components |
Pinout & Package
Package: DO-218AB - Surface-mount molded case with metal heatsink terminal (anode), matte tin-plated leads, UL 94 V-0 rated molding compound, and J-STD-020 MSL Level 1 compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Cathode | Connected to protected circuit node; carries transient current during clamping |
| Lead 2 / Metal Heatsink | Anode | Primary thermal path and electrical connection to ground/reference; must be soldered to large copper area |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional polarity | Enables precise DC-biased protection in automotive power rails without reverse conduction path |
| Junction passivation | Reduces long-term parameter drift and leakage increase under high-temperature bias stress |
| Low forward voltage drop | VF ≤ 2.0 V at 100 A ensures minimal conduction loss during surge events |
| ISO 7637-2 compliance | Validated for load dump waveforms used in OEM vehicle EMC validation protocols |
| Heatsink-as-anode construction | Maximizes thermal interface efficiency by integrating mechanical mounting and electrical return path |
Applications
| Engine Control Unit (ECU) Power Input Protection | Body Control Module (BCM) Battery Interface |
|---|---|
Use Scenario: Protects microcontroller power supply against 12 V battery line transients during alternator load dump and jump-start events. IC Role / Device Role / Timing Role: Unidirectional TVS diode clamps voltage spikes to prevent latch-up or damage to LDOs and MCU VCC pins. Use Value: Withstands 3600 W surges and clamps at 58.1 V, keeping downstream 5 V/3.3 V regulators within safe input range. | Use Scenario: Shields CAN transceivers and power management ICs on 24 V commercial vehicle BCMs from battery reversal and load dump. IC Role / Device Role / Timing Role: Fast-response transient suppressor placed at main battery feed-through point before DC-DC conversion stage. Use Value: AEC-Q101 qualification and 175 °C junction rating ensure reliability in high-ambient under-dash environments. |
| ADAS Camera Power Rail Protection | Electric Power Steering (EPS) Motor Driver Supply |
Use Scenario: Guards image sensor and ISP power inputs against coupled transients from adjacent high-current actuators in ADAS domain controllers. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after fuse and before buck converter, providing primary overvoltage defense. Use Value: Low leakage (<10 μA) prevents signal integrity degradation in always-on camera wake-up circuits. | Use Scenario: Safeguards gate drivers and current sense amplifiers in EPS H-bridge power stages exposed to motor inductive kickback. IC Role / Device Role / Timing Role: High-surge-capability TVS connected between motor supply rail and chassis ground. Use Value: DO-218AB package with RθJC = 1.0 °C/W enables direct thermal coupling to aluminum heatsink for repeated surge handling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A | Lower PPPM (400 W), SMA package (RθJC ≈ 40 °C/W), same VWM/VC spec | Not suitable for automotive load dump; limited to low-energy ESD/surge | Select SM5S36A-E3/2D when >3 kW surge capability and thermal performance are required |
| TPSMD36 | Same DO-218AB package, 3600 W rating, but bidirectional polarity and higher VC (64.3 V) | Used where AC-coupled or dual-polarity protection is needed (e.g., data lines) | Choose SM5S36A-E3/2D for unidirectional DC power rail protection with tighter clamping |
Compared with SMAJ36A and TPSMD36, the SM5S36A-E3/2D offers superior thermal dissipation and lower clamping voltage in unidirectional 36 V automotive power applications-critical for protecting modern low-voltage tolerant MCUs and PMICs.
Availability
SM5S36A-E3/2D is available at Aetrix Electronics and suitable for automotive ECU design, ADAS camera modules, and electric power steering systems requiring stable component supply across extended production lifecycles.
Supply support for SM5S36A-E3/2D includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The SM5S series is part of Vishay's PAR® TVS platform engineered specifically for automotive-grade transient suppression-emphasizing high-temperature operation, AEC-Q101 compliance, and robust load dump performance.
FAQ
What is the clamping voltage of the SM5S36A-E3/2D at its rated peak pulse current?
The SM5S36A-E3/2D has a maximum clamping voltage (VC) of 58.1 V at 62 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per standard test conditions in the Vishay datasheet (Document Number: 88382) and defines the upper voltage limit imposed on protected circuits during surge events. Maintaining this clamping level ensures compatibility with 40 V-rated downstream components in 24 V automotive systems.
Is the SM5S36A-E3/2D suitable for bidirectional transient protection?
No, the SM5S36A-E3/2D is a unidirectional TVS diode only. Its polarity is fixed with the metal heatsink serving as the anode and Lead 1 as the cathode. For bidirectional protection, Vishay offers the SM5S36CA variant. Using SM5S36A-E3/2D in reverse-biased configurations may result in premature breakdown or failure, as it is not characterized for reverse conduction beyond its specified VWM.
What does the "-E3/2D" suffix indicate in SM5S36A-E3/2D?
The "-E3" suffix denotes RoHS-compliant, matte tin-plated terminals qualified to JESD201 Class 2 for whisker resistance. The "/2D" indicates packaging in 13-inch plastic tape and reel with 750 units per reel, anode oriented toward the sprocket hole. This ordering code aligns with Vishay's preferred package format for automated SMT assembly and ensures traceable, compliant material sourcing for SM5S36A-E3/2D.
How does the DO-218AB package of the SM5S36A-E3/2D improve thermal performance compared to SMA or SMB packages?
The DO-218AB package of the SM5S36A-E3/2D features an integrated metal heatsink terminal that serves as both the anode and primary thermal path, achieving RθJC = 1.0 °C/W-over 30× better than typical SMA packages (~40 °C/W). This allows SM5S36A-E3/2D to dissipate 3600 W surges without excessive junction temperature rise, making it uniquely suited for high-power automotive load dump protection where SMA/SMB alternatives would thermally saturate.
Does the SM5S36A-E3/2D meet ISO 7637-2 requirements out-of-the-box?
Yes, the SM5S36A-E3/2D is explicitly stated in the Vishay datasheet to meet ISO 7637-2 surge specifications under defined test conditions-including Pulse 5a (load dump). Its 3600 W peak pulse power rating, 58.1 V clamping voltage, and 175 °C junction capability are validated for this standard. However, system-level compliance also depends on PCB layout, grounding, and proximity to protected ICs-so full vehicle-level testing remains necessary.
SM5S36A-E3/2D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-218AB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 62A
- Power - Peak Pulse:
- 3600W (3.6kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-218AB
SM5S36A-E3/2D FAQ
1.How can I place an order for SM5S36A-E3/2D through Aetrix?
Please submit a Request for Quotation (RFQ) for SM5S36A-E3/2D on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SM5S36A-E3/2D reliable?
The price and inventory of SM5S36A-E3/2D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM5S36A-E3/2D is usually 5 days.
3.What payment methods are accepted for SM5S36A-E3/2D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM5S36A-E3/2D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM5S36A-E3/2D?
SM5S36A-E3/2D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM5S36A-E3/2D order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SM5S36A-E3/2D?
For technical support, including SM5S36A-E3/2D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM5S36A-E3/2D requirements.
6.How does Aetrix verify that SM5S36A-E3/2D is sourced from the original manufacturer or authorized distributors?
All SM5S36A-E3/2D products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SM5S36A-E3/2D meets industry standards.
7.What is the process for return or replacement of SM5S36A-E3/2D?
All SM5S36A-E3/2D units undergo pre-shipment inspection (PSI). If there is an issue with SM5S36A-E3/2D, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SM5S36A-E3/2D part is unused and in its original packaging.
Return procedure for SM5S36A-E3/2D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM5S36A-E3/2D Tags
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