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Vishay General Semiconductor - Diodes Division 1.5SMC36CAHM3/I
- Part No.:
- 1.5SMC36CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC36CAHM3/I.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,223
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Product details
Overview
1.5SMC36CAHM3/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 36 V standoff voltage (VWM), 49.9 V clamping voltage (VC) at 30.1 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 μs waveform. It is halogen-free, RoHS-compliant, AEC-Q101 qualified, and housed in an SMC (DO-214AB) package - ideal for automotive and industrial power rail protection.
For engineers reviewing the 1.5SMC36CAHM3/I datasheet, 1.5SMC36CAHM3/I pinout, 1.5SMC36CAHM3/I application, or 1.5SMC36CAHM3/I equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: during transients exceeding its breakdown voltage (VBR min = 34.2 V, max = 37.8 V at 1 mA), it rapidly switches to low-impedance conduction, diverting surge current away from downstream circuitry. Its glass-passivated junction ensures stable avalanche characteristics and long-term reliability under repetitive surges.
The 1.5SMC36CAHM3/I exhibits symmetrical bidirectional behavior - no polarity marking required - and maintains clamping performance across -65 °C to +150 °C junction temperature range. Its low incremental surge resistance and fast response time (< 1 ns) enable effective suppression of ESD, lightning-induced spikes, and inductive switching transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 30.8 V - maximum continuous reverse operating voltage before significant leakage; defines safe DC/AC working margin. |
| VBR (Breakdown Voltage) | 34.2–37.8 V at 1 mA - precise avalanche initiation threshold; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 49.9 V at 30.1 A (10/1000 μs) - maximum voltage seen by protected circuit during worst-case surge; critical for IC/MOSFET survivability. |
| PPPM (Peak Pulse Power) | 1500 W - energy-handling capacity for standardized 10/1000 μs surge; enables protection against IEC 61000-4-5 Level 4 transients. |
| IR (Reverse Leakage) | 1.0 μA at VWM - ultra-low leakage preserves system efficiency and battery life in always-on circuits. |
| TJ max | +150 °C - high junction temperature rating supports operation in under-hood automotive and industrial environments. |
| RθJA | 75 °C/W - thermal resistance from junction to ambient on standard 8.0 mm × 8.0 mm pads; informs heatsinking requirements. |
Pinout & Package
Package: SMC (DO-214AB) - surface-mount, low-profile plastic case with matte tin-plated leads, UL 94 V-0 rated molding compound, MSL level 1 (260 °C reflow peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node in bidirectional configuration | Internally symmetric - no functional distinction between terminals; both serve as interchangeable surge current paths. |
| Cathode | Current exit terminal in forward bias; common node in bidirectional configuration | Identical to Anode in bidirectional devices; no band marking; terminals are electrically interchangeable. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - suitable for engine control, ADAS, and body electronics. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets global environmental regulations without compromising surge robustness or thermal performance. |
| 1500 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 compliance up to 4 kV line-to-line (2 Ω source impedance) with margin. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes protected circuit stress - e.g., keeps 3.3 V/5 V logic rails below destructive thresholds during transients. |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking; reduces manufacturing overhead and risk of popcorning. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V supply lines in automotive ECUs from load dump (ISO 16750-2) and jump-start surges. IC Role / Device Role / Timing Role: Shunt TVS diode clamping transient energy before it reaches DC-DC converters and microcontrollers. Use Value: Withstands 35 V/100 ms load dump pulses while maintaining < 50 V clamping - preserving ASIL-B compliant subsystem integrity. |
Use Scenario: Safeguarding analog sensor inputs (e.g., pressure, temperature) in PLC modules exposed to field wiring transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed at connector interface to absorb ±1 kV EFT (IEC 61000-4-4) and lightning-induced surges. Use Value: Symmetric response eliminates need for polarity-aware layout; 49.9 V clamping protects 24 V sensor front-ends without signal distortion. |
| Telecom Line Card Surge Suppression | Consumer Power Adapter Input Protection |
Use Scenario: Secondary-side overvoltage protection on AC/DC adapter outputs feeding Ethernet switch PHYs or PoE injectors. IC Role / Device Role / Timing Role: Fast-acting clamp limiting output rail excursions during short-circuit recovery or transformer ringing. Use Value: Sub-1 ns response prevents latch-up in sensitive PHY ICs; 1500 W rating handles repeated 10/1000 μs surges per Telcordia GR-1089-CORE. |
Use Scenario: Input-stage transient suppression in USB-C PD adapters subjected to mains-borne surges and ESD. IC Role / Device Role / Timing Role: Primary-side bidirectional TVS absorbing differential-mode noise and common-mode spikes before primary controller. Use Value: Halogen-free HM3 construction meets IEC 62368-1 flammability and environmental requirements without sacrificing 30.1 A surge current handling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | Lower PPPM (600 W), same VWM/VC, SMB (DO-214AA) package - 30% smaller footprint but higher RθJA (100 °C/W). | Preferred where board space is constrained and surge energy is ≤ 600 W (e.g., low-power IoT nodes). | Select SMBJ36CA only if thermal derating and lower surge margin are acceptable; not drop-in for 1.5SMC36CAHM3/I's 1500 W requirement. |
| 1.5KE36CA | Through-hole TO-204AE (DO-201AE) package, identical electrical specs, but incompatible with SMT assembly and lacks AEC-Q101/HM3 qualification. | Suitable for legacy through-hole designs or prototyping; unsuitable for automotive production or high-volume SMT lines. | Choose 1.5KE36CA only for manual assembly or cost-sensitive non-automotive applications - no PCB or process compatibility with 1.5SMC36CAHM3/I. |
Compared with SMBJ36CA and 1.5KE36CA, the 1.5SMC36CAHM3/I uniquely delivers AEC-Q101 qualification, halogen-free compliance, 1500 W surge capability, and SMC package manufacturability - making it the sole option meeting full automotive production and high-energy industrial requirements.
Availability
1.5SMC36CAHM3/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, telecom line cards, and consumer power adapters requiring stable component supply, AEC-Q101 traceability, and consistent surge performance across production batches.
Supply support for 1.5SMC36CAHM3/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 is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade validation.
The 1.5SMC Series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, 1500 W surge handling, and SMT manufacturability are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC36CAHM3/I at its rated peak pulse current?
The 1.5SMC36CAHM3/I has a maximum clamping voltage (VC) of 49.9 V when subjected to its rated peak pulse current of 30.1 A using the standard 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88303 and defines the upper voltage limit imposed on protected circuitry during surge events. The 1.5SMC36CAHM3/I maintains this clamping performance across its full operating temperature range.
Is the 1.5SMC36CAHM3/I suitable for automotive applications?
Yes, the 1.5SMC36CAHM3/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction validated for automotive use. It meets requirements for under-hood and cabin electronics, including load dump immunity (ISO 16750-2) and ESD robustness (ISO 10605). The 1.5SMC36CAHM3/I is explicitly listed in Vishay's AEC-Q101 qualified product matrix for the 1.5SMC series.
What does the "CA" suffix mean in 1.5SMC36CAHM3/I?
The "CA" suffix in 1.5SMC36CAHM3/I denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities, with no cathode band marking and identical VBR, VC, and IPPM characteristics in either direction. This distinguishes it from unidirectional variants (e.g., 1.5SMC36AHM3/I) and makes the 1.5SMC36CAHM3/I ideal for AC-coupled or polarity-agnostic protection points.
What is the thermal resistance of the 1.5SMC36CAHM3/I, and how does it affect layout?
The 1.5SMC36CAHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's package drawing. To maintain safe junction temperatures under sustained power dissipation, designers must allocate adequate copper area and avoid excessive trace length - the 1.5SMC36CAHM3/I's thermal performance directly impacts its ability to handle repetitive surges.
How does the 1.5SMC36CAHM3/I compare to the unidirectional 1.5SMC36AHM3/I in terms of electrical performance?
The 1.5SMC36CAHM3/I and 1.5SMC36AHM3/I share identical VWM (30.8 V), VBR (34.2–37.8 V), VC (49.9 V), and PPPM (1500 W) ratings, but differ in polarity behavior: the 1.5SMC36CAHM3/I is bidirectional with symmetrical clamping, while the 1.5SMC36AHM3/I is unidirectional with a marked cathode band and forward voltage drop (~3.5 V at 100 A). Use the 1.5SMC36CAHM3/I where polarity is undefined or AC signals require protection in both directions.
1.5SMC36CAHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC36CAHM3/I FAQ
1.How can I place an order for 1.5SMC36CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC36CAHM3/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 1.5SMC36CAHM3/I reliable?
The price and inventory of 1.5SMC36CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC36CAHM3/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC36CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC36CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC36CAHM3/I?
1.5SMC36CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC36CAHM3/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 1.5SMC36CAHM3/I?
For technical support, including 1.5SMC36CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC36CAHM3/I requirements.
6.How does Aetrix verify that 1.5SMC36CAHM3/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC36CAHM3/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 1.5SMC36CAHM3/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC36CAHM3/I?
All 1.5SMC36CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC36CAHM3/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 1.5SMC36CAHM3/I part is unused and in its original packaging.
Return procedure for 1.5SMC36CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC36CAHM3/I Tags
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