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Vishay General Semiconductor - Diodes Division 1.5SMC36CAHM3/H
- Part No.:
- 1.5SMC36CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC36CAHM3/H.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,778
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Product details
Overview
1.5SMC36CAHM3/H 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 (IPPM), and 1500 W peak pulse power capability with 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the 1.5SMC36CAHM3/H datasheet, 1.5SMC36CAHM3/H pinout, 1.5SMC36CAHM3/H application, or 1.5SMC36CAHM3/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification, SMC (DO-214AB) package thermal performance, and compliance with UL 497B surge protector requirements.
Technical Context
This device operates as a voltage-clamped shunt protector: during transients exceeding its breakdown voltage (VBR = 34.2–37.8 V), it rapidly switches to low-impedance conduction, diverting surge current away from downstream circuitry. Its bidirectional architecture ensures symmetrical clamping in both polarities without polarity dependence.
Thermal design relies on its RθJL of 15 °C/W (junction-to-leads) and RθJA of 75 °C/W (junction-to-ambient), requiring minimum 8.0 mm × 8.0 mm copper pads per terminal for rated 1500 W pulse handling. It meets MSL Level 1 and JESD201 Class 2 whisker resistance standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 30.8 V - maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (Breakdown) | 34.2–37.8 V at 1.0 mA - sharp, repeatable avalanche onset enabling precise overvoltage triggering |
| VC (Clamping) | 49.9 V at 30.1 A IPPM - limits transient voltage seen by protected ICs to ≤49.9 V under full-rated surge |
| PPPM | 1500 W - peak surge energy absorption capacity with 10/1000 µs waveform, critical for lightning and inductive-switching immunity |
| ID (Leakage) | 1.0 µA max at VWM - negligible standby power loss and minimal impact on high-impedance signal integrity |
| TJ max | +150 °C - enables operation in under-hood automotive and industrial environments without derating |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H); cathode band absent (bidirectional).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | One terminal of symmetrical PN junction; conducts surge current when voltage reverses polarity |
| Cathode | Transient current entry (positive polarity) | Second terminal of symmetrical PN junction; conducts surge current when voltage exceeds VBR in either direction |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC in both directions - eliminates need for polarity-aware layout in AC-coupled or floating lines |
| 1500 W peak pulse rating | Withstands 10/1000 µs surges up to 30.1 A - meets IEC 61000-4-5 Level 4 (4 kV) when properly mounted |
| AEC-Q101 qualification | Validated for automotive electronics - supports deployment in ADAS sensors, body control modules, and infotainment power rails |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (<1 ns response) - enhances protection of sensitive CMOS inputs |
| MSL Level 1 | Reflow-compatible up to 260 °C peak - enables standard SMT assembly without moisture sensitivity concerns |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/FlexRay transceiver inputs and analog sensor outputs (e.g., pressure, temperature) from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Shunt TVS diode placed directly at connector interface to clamp surges before reaching signal conditioning ICs. Use Value: Maintains signal integrity under ±100 V/100 ms load dump (ISO 7637-2 Pulse 5a) while adding <0.5 pF capacitance. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers against field-wiring induced surges and ground bounce. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input terminal blocks, coordinated with upstream fuses and downstream optocouplers. Use Value: Enables >100,000 surge cycles at 1500 W without degradation, supporting long-life industrial deployments. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Secondary surge protection on Ethernet PHY power rails (3.3 V, 5 V) and RS-485 data lines exposed to building-wide lightning-induced coupling. IC Role / Device Role / Timing Role: Fast-response clamping device placed after primary GDT or MOV, limiting let-through voltage to <50 V. Use Value: 49.9 V clamping ensures protected PHY ICs remain within absolute maximum ratings during combined-mode surges. |
Use Scenario: Input-stage transient suppression on universal-input (90–264 VAC) SMPS front-ends, guarding bridge rectifiers and PFC controllers. IC Role / Device Role / Timing Role: Bidirectional clamp across bulk capacitor terminals to absorb differential-mode switching spikes and EFT bursts. Use Value: Halogen-free HM3 construction complies with IEC 62368-1 flammability (UL 94 V-0) and environmental mandates. |
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 | Same VWM/VBR/VC specs but lower PPPM (600 W); SMB (DO-214AA) package - 30% smaller footprint, higher RθJA (100 °C/W) | Preferred for space-constrained consumer ports where 600 W surge margin suffices | Select when board area is critical and surge threat level is ≤IEC 61000-4-5 Level 2 |
| 1.5KE36CA | Through-hole TO-204AE (DO-15); identical electrical specs but slower thermal response and no AEC-Q101 qualification | Suitable for legacy industrial power supplies with manual assembly or rework requirements | Choose only if SMT compatibility or automotive qualification is not required |
Compared with SMBJ36CA and 1.5KE36CA, the 1.5SMC36CAHM3/H delivers higher surge robustness in an automotive-qualified SMT package - enabling compact, high-reliability designs where 1500 W clamping and AEC-Q101 validation are mandatory.
Availability
1.5SMC36CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101 qualified parts.
Supply support for 1.5SMC36CAHM3/H 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series targets high-energy transient suppression in automotive, industrial, and telecom systems - engineered for rapid response, stable clamping, and robust thermal performance in harsh environments.
FAQ
What does the "HM3" suffix indicate in 1.5SMC36CAHM3/H?
The "HM3" suffix in 1.5SMC36CAHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "H" indicates 7-inch tape-and-reel packaging (850 units per reel), and "/H" confirms this specific ordering variant. This makes 1.5SMC36CAHM3/H suitable for automotive and green-electronics applications requiring strict material compliance and reliability validation.
Is 1.5SMC36CAHM3/H unidirectional or bidirectional?
1.5SMC36CAHM3/H is a bidirectional TVS diode, as confirmed by the "CA" suffix in its part number. It provides symmetrical clamping behavior in both polarities - essential for protecting AC-coupled lines, differential buses (e.g., RS-485), or floating power domains where voltage reversal may occur during transients.
What is the maximum clamping voltage of 1.5SMC36CAHM3/H at rated surge current?
The maximum clamping voltage (VC) of 1.5SMC36CAHM3/H is 49.9 V at 30.1 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is guaranteed per Vishay's datasheet (Document Number 88303, Rev. 09-Mar-2026) and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Can 1.5SMC36CAHM3/H replace 1.5SMC36A in a design?
No - 1.5SMC36CAHM3/H is bidirectional, while 1.5SMC36A is unidirectional. Substituting them requires verifying circuit polarity constraints: using 1.5SMC36CAHM3/H in place of 1.5SMC36A introduces conduction in reverse bias, which may disrupt DC biasing or cause unintended current paths. Always validate functionality and clamping symmetry in the target application before substitution.
What PCB pad layout is required to achieve the full 1500 W rating of 1.5SMC36CAHM3/H?
To achieve the full 1500 W peak pulse power rating, 1.5SMC36CAHM3/H must be mounted on minimum 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal, as specified in Vishay's datasheet Figure 2 and thermal characteristics table. Smaller pads will thermally derate the device, reducing sustainable surge energy and risking junction failure during repetitive transients.
1.5SMC36CAHM3/H 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/H FAQ
1.How can I place an order for 1.5SMC36CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC36CAHM3/H 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/H reliable?
The price and inventory of 1.5SMC36CAHM3/H 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/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC36CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC36CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC36CAHM3/H?
1.5SMC36CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC36CAHM3/H 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/H?
For technical support, including 1.5SMC36CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC36CAHM3/H requirements.
6.How does Aetrix verify that 1.5SMC36CAHM3/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC36CAHM3/H 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/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC36CAHM3/H?
All 1.5SMC36CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC36CAHM3/H, 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/H part is unused and in its original packaging.
Return procedure for 1.5SMC36CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC36CAHM3/H Tags
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