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Vishay General Semiconductor - Diodes Division SM5S36AHM3/I
- Part No.:
- SM5S36AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AC
- Datasheet:
-
SM5S36AHM3/I.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO218AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,297
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Product details
Overview
SM5S36AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor in DO-218AB package, rated for 36 V stand-off voltage (VWM), 44.2 V max breakdown voltage (VBR), 3600 W peak pulse power (10/1000 μs), 175 °C junction temperature, and AEC-Q101 qualified for automotive load dump protection.
For engineers reviewing the SM5S36AHM3/I datasheet, SM5S36AHM3/I pinout, SM5S36AHM3/I application, or SM5S36AHM3/I equivalent, key selection criteria include clamping voltage (58.1 V at IPPM), low leakage (<10 μA at VWM), high surge capability (150 A peak pulse current), and MSL Level 1 reliability for reflow soldering.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping under repetitive transients, with thermal resistance RθJM = 0.45 °C/W enabling efficient heat transfer to the metal heatsink (anode side). Its 10/1000 μs waveform rating supports ISO7637-2 compliance for automotive load dump events.
The device operates across -55 °C to +175 °C, exhibits 0.091 %/°C VBR temperature coefficient, and maintains <2.0 V forward voltage at 100 A-critical for minimizing conduction loss during surge clamping in high-current 12 V/24 V vehicle systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (max) | 44.2 V - guaranteed minimum breakdown threshold at 5 mA test current |
| VC (at IPPM) | 58.1 V - clamping voltage limiting downstream circuit stress during 150 A surge |
| PPPM (10/1000 μs) | 3600 W - peak transient energy absorption capacity per single pulse |
| TJ max | +175 °C - enables operation in under-hood automotive environments without derating |
| Leakage (ID @ VWM) | <10 μA - ensures minimal standby power loss in always-on vehicle modules |
| Polarity | Unidirectional - protects against positive-going transients only; anode connected to heatsink |
Pinout & Package
Package: DO-218AB - surface-mount, anode-side metal heatsink, UL 94 V-0 molding compound, matte tin-plated leads, MSL Level 1 (245 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink) | Current entry point during clamping | Must be thermally connected to PCB copper pour or chassis for effective heat dissipation |
| Cathode | Current exit point during clamping | Connected to protected line (e.g., battery rail); defines polarity of suppression |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Enables stable VBR over lifetime and high humidity reliability per AEC-Q101 stress tests |
| 175 °C TJ rating | Supports placement near engines or power electronics without thermal derating |
| Low VF (≤2.0 V @ 100 A) | Reduces I²R heating during high-current clamping, improving pulse survivability |
| ISO7637-2 compliance | Validated for automotive load dump waveforms, including 10 ms exponential pulses |
| MSL Level 1 | Allows standard SMT reflow without moisture sensitivity concerns or baking |
Applications
| Automotive Load Dump Protection | DC-DC Converter Input Protection |
|---|---|
Use Scenario: Protecting engine control units (ECUs) and body control modules (BCMs) from 12 V system load dump transients up to 40 V and 300 A. IC Role / Device Role / Timing Role: Primary clamping element placed between battery rail and upstream regulator input. Use Value: Limits voltage to ≤58.1 V during 3600 W surges, preventing damage to 40 V-rated input stages. | Use Scenario: Safeguarding buck converter inputs in ADAS cameras or infotainment head units exposed to alternator switching noise. IC Role / Device Role / Timing Role: Fast-response shunt protector absorbing sub-millisecond spikes before they reach controller ICs. Use Value: Clamps within nanoseconds with <10 μA leakage, preserving efficiency while blocking >30 V transients. |
| Industrial Power Supply Surge Suppression | Commercial Vehicle Battery Interface |
Use Scenario: Securing programmable logic controller (PLC) power inputs against lightning-induced surges on 24 V DC field wiring. IC Role / Device Role / Timing Role: Standoff-rated TVS placed at DIN rail power entry point before EMI filter stage. Use Value: Withstands 2800 W (10/10,000 μs) surges and maintains <10 μA leakage at 36 V, ensuring long-term stability. | Use Scenario: Protecting telematics gateways in Class 8 trucks where battery voltage can spike to 35 V during cold-cranking recovery. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to chassis ground, mounted directly to metal enclosure. Use Value: Anode-side heatsink enables direct thermal coupling to chassis, sustaining 175 °C ambient operation without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SM5S36AHM3 | No /I suffix - bulk packaging instead of tape-and-reel; identical electrical specs and AEC-Q101 qualification | Same automotive load dump use case; differs only in delivery format for high-volume SMT lines | Select SM5S36AHM3/I for automated pick-and-place with sprocket-hole orientation; choose SM5S36AHM3 for manual or tray-based assembly |
| SMAJ36AHE3_A | DO-214AC (SMA) package, lower PPPM (400 W), higher RθJA (85 °C/W), same VWM/VBR range | Less robust thermal performance; suitable for non-under-hood, lower-energy surge environments | Use SMAJ36AHE3_A only where board space is constrained and peak surge energy remains below 400 W |
Compared with SM5S36AHM3/I, SM5S36AHM3 offers identical protection performance in bulk form, while SMAJ36AHE3_A trades 90% lower surge capacity and inferior thermal management for smaller footprint-making SM5S36AHM3/I optimal for demanding automotive and industrial 3600 W transient suppression.
Availability
SM5S36AHM3/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, and commercial vehicle telematics requiring stable component supply, AEC-Q101 qualification, and high-energy transient immunity.
Supply support for SM5S36AHM3/I 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, automotive-grade components.
The SM5S series targets automotive and industrial transient suppression, engineered specifically for load dump compliance, high-temperature operation, and robust surge handling in harsh environments.
FAQ
What is the clamping voltage of the SM5S36AHM3/I at its rated peak pulse current?
The SM5S36AHM3/I has a maximum clamping voltage (VC) of 58.1 V when subjected to its rated peak pulse current (IPPM) of 150 A under the 10/1000 μs waveform. This value is measured per the conditions specified in the Vishay datasheet (Document Number 88382), and ensures downstream circuitry remains within safe voltage limits during high-energy transients. The SM5S36AHM3/I maintains this clamping performance across its full operating temperature range.
Is the SM5S36AHM3/I qualified for automotive applications?
Yes, the SM5S36AHM3/I is AEC-Q101 qualified and explicitly designed for automotive use, including under-hood load dump protection. It meets ISO7637-2 surge requirements and is rated for continuous operation from -55 °C to +175 °C. The "H" in its part number denotes AEC-Q101 qualification, and the "E3" suffix confirms RoHS-compliance and halogen-free construction-both required for modern automotive electronics. The SM5S36AHM3/I is listed in Vishay's official automotive-grade product documentation.
What does the "/I" suffix mean in SM5S36AHM3/I?
The "/I" suffix in SM5S36AHM3/I indicates tape-and-reel packaging with 750 units per reel, using 13-inch diameter plastic tape where the anode lead is oriented toward the sprocket hole. This configuration is optimized for automated SMT placement. The electrical and thermal specifications of SM5S36AHM3/I are identical to those of SM5S36AHM3 (bulk version); only the packaging and delivery format differ. The SM5S36AHM3/I is fully compatible with standard pick-and-place equipment.
Can the SM5S36AHM3/I replace older SM5S36A variants?
The SM5S36AHM3/I replaces legacy SM5S36A with enhanced qualifications: it includes the "H" (AEC-Q101) and "E3" (RoHS/halogen-free) suffixes, and conforms to MSL Level 1 reflow standards. While electrically equivalent, the SM5S36AHM3/I adds automotive-grade reliability and modern environmental compliance. Vishay explicitly lists SM5S36AHM3/I as the preferred replacement for SM5S36A in new designs requiring qualification and long-term supply stability.
What is the thermal resistance from junction to heatsink for SM5S36AHM3/I?
The SM5S36AHM3/I has a typical junction-to-mount thermal resistance (RθJM) of 0.45 °C/W, measured per JEDEC 51-14 using the Transient Dual Interface Method. This low value reflects the DO-218AB package's integrated metal heatsink (anode terminal), which must be soldered to a large PCB copper area or chassis for optimal thermal performance. RθJM is independent of PCB layout and enables accurate junction temperature prediction under surge conditions. The SM5S36AHM3/I's 175 °C TJ rating relies on effective heatsink coupling.
SM5S36AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-218AC
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-218AC
SM5S36AHM3/I FAQ
1.How can I place an order for SM5S36AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM5S36AHM3/I 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 SM5S36AHM3/I reliable?
The price and inventory of SM5S36AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM5S36AHM3/I is usually 5 days.
3.What payment methods are accepted for SM5S36AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM5S36AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM5S36AHM3/I?
SM5S36AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM5S36AHM3/I 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 SM5S36AHM3/I?
For technical support, including SM5S36AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM5S36AHM3/I requirements.
6.How does Aetrix verify that SM5S36AHM3/I is sourced from the original manufacturer or authorized distributors?
All SM5S36AHM3/I 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 SM5S36AHM3/I meets industry standards.
7.What is the process for return or replacement of SM5S36AHM3/I?
All SM5S36AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM5S36AHM3/I, 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 SM5S36AHM3/I part is unused and in its original packaging.
Return procedure for SM5S36AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM5S36AHM3/I Tags
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