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Vishay General Semiconductor - Diodes Division 1.5SMC36CAHE3_A/H
- Part No.:
- 1.5SMC36CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC36CAHE3_A/H.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,260
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Product details
Overview
1.5SMC36CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount 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 (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the 1.5SMC36CAHE3_A/H datasheet, 1.5SMC36CAHE3_A/H pinout, 1.5SMC36CAHE3_A/H application, or 1.5SMC36CAHE3_A/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification for automotive use, SMC (DO-214AB) package thermal performance, and compliance with UL 497B surge protector standards.
Technical Context
This device operates as a voltage-clamped shunt protector: during transient events exceeding its reverse standoff voltage (VWM = 36 V), it avalanches symmetrically in both directions to clamp the line at ≤49.9 V while diverting up to 30.1 A (10/1000 μs). Its glass-passivated junction ensures stable breakdown and low leakage (<1 μA at VWM).
Thermally, it uses an SMC (DO-214AB) package with RθJA = 75 °C/W and RθJL = 15 °C/W, enabling reliable operation up to TJ = 150 °C. The HE3 suffix confirms RoHS-compliance and AEC-Q101 qualification - validated for automotive-grade reliability under temperature cycling, humidity, and mechanical shock per JESD22 and AEC test plans.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 36 V - maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below system rail. |
| VBR (Breakdown) | 34.2–37.8 V at IT = 1 mA - verified avalanche onset range ensuring consistent turn-on across production lots. |
| VC (Clamping) | 49.9 V at IPPM = 30.1 A - peak voltage seen by protected circuit during worst-case 10/1000 μs surge; critical for IC survival. |
| PPPM | 1500 W - surge energy handling capacity with standard 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 compliance. |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal relief and MSL Level 1 rating. |
| AEC-Q101 | Qualified - certified for automotive applications including engine control units, ADAS sensors, and infotainment power rails. |
| Leakage (ID) | <1 μA at 36 V - negligible standby current draw, preserving battery life in always-on systems. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, dimensions 7.75 mm × 6.22 mm × 2.62 mm (L × W × H). Polarity: bidirectional - no cathode band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Connects to protected line; conducts during positive or negative transients relative to reference node. |
| Cathode | Transient return path (bidirectional) | Electrically identical to Anode in CA devices; forms symmetrical clamping pair with Anode terminal. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints. |
| 1500 W peak pulse power | Handles high-energy surges from inductive switching or lightning-induced transients in industrial and automotive environments. |
| AEC-Q101 qualification | Validated for automotive underhood and cabin applications requiring extended temperature range (-65 °C to +150 °C) and reliability testing. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD or EFT), improving system immunity. |
| MSL Level 1, 260 °C reflow | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements. |
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 ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt TVS diode providing sub-100 ns response to clamp transients before they reach sensitive analog front-ends or communication PHYs. Use Value: Prevents latch-up or permanent damage in AEC-Q100 Grade 2 ICs by limiting voltage to ≤49.9 V during 100 V/50 ms load dump events. |
Use Scenario: Safeguarding 24 V DC digital input modules against field-wiring induced surges and relay coil flyback in factory automation cabinets. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between input terminal and ground, absorbing ±1 kV/0.5 J transients per IEC 61000-4-4/5. Use Value: Eliminates need for external series impedance or RC snubbers due to low dynamic impedance (Zdynamic ≈ 1.66 Ω) at rated IPPM. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHY magnetics or RS-485 transceivers from induced surges on outdoor cabling or PoE injectors. IC Role / Device Role / Timing Role: Primary surge suppression element placed at connector entry point, coordinated with secondary GDT or MOV stages. Use Value: Maintains signal integrity with <10 pF junction capacitance at zero bias, avoiding data rate degradation in 100 Mbps+ links. |
Use Scenario: Secondary-side overvoltage protection on 5–24 V DC output rails of wall adapters and USB PD chargers against output short-circuit recovery spikes. IC Role / Device Role / Timing Role: Fast-acting clamping device parallel to load, activated only during abnormal overvoltage conditions (>36 V). Use Value: Complies with UL 62368-1 Annex D requirements for secondary circuit protection with self-resetting behavior and no wear-out mechanism. |
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 (36 V) and VC (49.9 V), but lower PPPM (600 W); SMB package (smaller footprint, higher RθJA = 110 °C/W). | Limited to lower-energy transients (IEC 61000-4-5 Level 2); unsuitable for automotive load dump where 1500 W is required. | Select when board space is constrained and surge threat level is moderate (e.g., consumer USB ports). |
| 1.5KE36CA | Same electrical specs but axial-leaded DO-201AD package; higher mounting inductance and manual assembly requirement. | Not suitable for automated SMT lines; thermal performance inferior (RθJA ≈ 100 °C/W) without heatsinking. | Choose only for prototyping, legacy through-hole designs, or cost-sensitive non-automated production. |
Compared with SMBJ36CA and 1.5KE36CA, the 1.5SMC36CAHE3_A/H delivers full 1500 W surge capability in an AEC-Q101-qualified SMT package - making it the only option among the three that meets automotive-grade transient immunity and high-volume reflow assembly requirements simultaneously.
Availability
1.5SMC36CAHE3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial programmable logic controllers, and telecom infrastructure requiring stable component supply with long-term lifecycle assurance and traceable sourcing.
Supply support for 1.5SMC36CAHE3_A/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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The 1.5SMC Series was engineered for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness, AEC-Q101 compliance, and standardized SMC packaging are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC36CAHE3_A/H under maximum rated surge current?
The 1.5SMC36CAHE3_A/H clamps to a maximum of 49.9 V when subjected to its rated peak pulse current of 30.1 A with a 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88303 and represents the upper limit of voltage stress imposed on downstream circuitry during surge events - critical for ensuring compatibility with 3.3 V, 5 V, or 24 V logic and interface ICs.
Is the 1.5SMC36CAHE3_A/H suitable for automotive applications?
Yes, the 1.5SMC36CAHE3_A/H is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's 1.5SMC Series datasheet (Rev. 09-Mar-2026). It is explicitly rated for automotive use in engine control, body electronics, and ADAS sensor modules, supporting operating temperatures from -65 °C to +150 °C and passing vibration, thermal cycling, and humidity tests per AEC-Q101.
How does the bidirectional design of the 1.5SMC36CAHE3_A/H affect its circuit implementation?
The 1.5SMC36CAHE3_A/H has symmetrical breakdown characteristics in both directions, meaning it protects AC-coupled or floating nodes without regard to polarity - ideal for RS-485, CAN, or audio lines. Unlike unidirectional TVS diodes, it requires no orientation during placement and eliminates risk of reverse installation errors in high-volume SMT assembly.
What is the thermal resistance of the 1.5SMC36CAHE3_A/H, and how does it impact PCB layout?
The 1.5SMC36CAHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. To maintain safe junction temperature under repeated surges, designers must provide adequate copper area and avoid narrow traces - insufficient copper increases RθJA and risks thermal runaway during multi-pulse events.
Does the 1.5SMC36CAHE3_A/H meet UL safety certification requirements?
Yes, the 1.5SMC36CAHE3_A/H is Underwriters Laboratories (UL) recognized under file E136766 for both unidirectional and bidirectional configurations, complying with UL 497B for signal and power line protectors. This certification validates its suitability in end-equipment requiring UL listing, such as industrial control panels and automotive infotainment systems.
1.5SMC36CAHE3_A/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:
- Active
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC36CAHE3_A/H FAQ
1.How can I place an order for 1.5SMC36CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC36CAHE3_A/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 1.5SMC36CAHE3_A/H reliable?
The price and inventory of 1.5SMC36CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC36CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC36CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC36CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC36CAHE3_A/H?
1.5SMC36CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC36CAHE3_A/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 1.5SMC36CAHE3_A/H?
For technical support, including 1.5SMC36CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC36CAHE3_A/H requirements.
6.How does Aetrix verify that 1.5SMC36CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC36CAHE3_A/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 1.5SMC36CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC36CAHE3_A/H?
All 1.5SMC36CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC36CAHE3_A/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 1.5SMC36CAHE3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC36CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC36CAHE3_A/H Tags
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