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Vishay General Semiconductor - Diodes Division 1.5SMC36AHE3_A/H
- Part No.:
- 1.5SMC36AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC36AHE3_A/H.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:7,103
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Product details
Overview
1.5SMC36AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 36 V breakdown voltage (VBR = 34.2–37.8 V at IT = 1.0 mA), 30.8 V stand-off voltage (VWM), 49.9 V clamping voltage (VC) at 30.1 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial power supply rails.
For engineers reviewing the 1.5SMC36AHE3_A/H datasheet, 1.5SMC36AHE3_A/H pinout, 1.5SMC36AHE3_A/H application, or 1.5SMC36AHE3_A/H equivalent, key selection considerations include its AEC-Q101 qualification, SMC (DO-214AB) package thermal performance (RθJA = 75 °C/W), unidirectional polarity with cathode band marking, and compliance with UL 497B surge protector standards.
Technical Context
This TVS diode operates as a clamping device that transitions from high-impedance standby to low-impedance conduction when reverse voltage exceeds VWM = 30.8 V, limiting transient energy via avalanche breakdown. Its glass-passivated junction ensures stable VBR tolerance (±5%) and fast response time (<1 ps), critical for protecting MOSFET gates and microcontroller I/O against ESD and lightning-induced surges.
Thermally, it supports continuous operation up to TJ = 150 °C and delivers 6.5 W power dissipation on infinite heatsink at TA = 50 °C. The SMC package enables automated placement and meets J-STD-020 MSL Level 1 (peak reflow 260 °C), with matte tin-plated leads compliant to JESD 22-B102 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 34.2 V / 37.8 V at IT = 1.0 mA - defines precise avalanche onset threshold for reliable clamping activation |
| VWM | 30.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 49.9 V at 30.1 A - clamped voltage during 1500 W transient, limiting downstream stress to safe levels |
| PPPM | 1500 W (10/1000 μs waveform) - peak surge handling capacity for automotive load-dump and EFT events |
| TJ max. | +150 °C - enables use in under-hood automotive environments and high-ambient industrial enclosures |
| RθJA | 75 °C/W - quantifies thermal resistance from junction to ambient, guiding PCB copper pad sizing (8.0 mm × 8.0 mm recommended) |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD (HBM ≥ 8 kV) |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic case meeting UL 94 V-0 flammability rating; cathode indicated by band on one end; terminals are matte tin-plated for solderability per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to system ground or low-side return path; reverse-biased during clamping operation |
| Cathode | Clamping output / Surge sink node | Connected to protected line (e.g., 36 V rail); conducts avalanche current to ground during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Handles severe transients like ISO 7637-2 Pulse 5a (load dump) without degradation |
| AEC-Q101 qualification | Validated for automotive electronics including engine control units and ADAS sensor modules |
| Glass-passivated junction | Ensures long-term VBR stability and low leakage (<1.0 μA at VWM) across temperature and life |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD ±15 kV contact discharge) |
| MSL Level 1 moisture sensitivity | Allows standard SMT reflow without baking; compatible with high-volume automated assembly |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 36 V battery-fed ECUs from load-dump transients (up to 60 V, 400 ms) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground, clamping surges before they reach DC/DC converters and MCU power pins. Use Value: Limits peak voltage to ≤49.9 V during 30.1 A transients, preventing latch-up or gate oxide damage in downstream 40 V-rated components. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in factory automation PLC modules from inductive switching noise. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ ≈ 100 pF typical at 0 V) placed at sensor connector interface to suppress 1 kV EFT bursts. Use Value: Clamps 10/1000 μs surges to <50 V within <1 ps, preserving signal integrity of 4–20 mA loops without adding measurable offset or delay. |
| Telecom Line Surge Suppression | Consumer Power Adapter Input Protection |
|
Use Scenario: Safeguarding PoE-powered Ethernet switches against lightning-induced common-mode surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary unidirectional clamp on DC input rail upstream of active rectification and filtering stages. Use Value: Absorbs 1500 W surges without failure, maintaining VC below 50 V to protect 60 V-rated MOSFETs and controllers in power management ICs. |
Use Scenario: Overvoltage defense in universal-input AC/DC adapters (e.g., 100–240 VAC input, 36 VDC output) against mains transients. IC Role / Device Role / Timing Role: Secondary-level TVS on secondary-side 36 V output rail, guarding against feedback loop faults and transformer ringing. Use Value: Provides fail-safe clamping with <1.0 μA leakage at 30.8 V, ensuring no standby power loss while enabling UL 497B certification compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/57T | Same VWM/VBR/VC, but lower PPPM = 400 W; SMA package (smaller footprint, higher RθJA = 110 °C/W) | Limited to lower-energy transients (IEC 61000-4-5 Level 3); unsuitable for automotive load-dump | Select only for space-constrained consumer applications where surge severity is well-characterized and limited. |
| 1.5KE36A | Through-hole TO-204AA (DO-41); identical electrical specs but larger RθJA = 100 °C/W and no AEC-Q101 qualification | Not suitable for automated SMT production or automotive under-hood mounting due to leaded construction and qualification gap | Use only for prototyping or legacy through-hole designs requiring identical clamping behavior without SMT requirements. |
Compared with SMAJ36A-E3/57T and 1.5KE36A, the 1.5SMC36AHE3_A/H uniquely combines AEC-Q101 qualification, 1500 W surge capability, and SMC package thermal efficiency - making it the only option qualified for production automotive power rail protection with zero layout compromise.
Availability
1.5SMC36AHE3_A/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface hardening, and telecom power supply surge protection requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC36AHE3_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, and protection devices with emphasis on reliability, precision, and automotive-grade validation.
The 1.5SMC Series was engineered specifically for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom systems demanding AEC-Q101 compliance and repeatable clamping performance.
FAQ
What is the clamping voltage of the 1.5SMC36AHE3_A/H under maximum rated surge conditions?
The 1.5SMC36AHE3_A/H exhibits a maximum clamping voltage (VC) of 49.9 V when subjected to its rated peak pulse current of 30.1 A (10/1000 μs waveform). This value is measured per Fig. 1 in the Vishay datasheet 88303 and represents the upper limit of voltage seen by protected circuitry during worst-case transient events - critical for verifying compatibility with downstream 50 V-rated components.
Is the 1.5SMC36AHE3_A/H suitable for automotive applications?
Yes, the 1.5SMC36AHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix. It has undergone stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD (HBM ≥ 8 kV), making it appropriate for engine control units, body electronics, and ADAS sensor modules where reliability under thermal and electrical stress is mandatory.
What does the "_A/H" suffix in 1.5SMC36AHE3_A/H indicate?
The "_A/H" suffix denotes two specific ordering attributes: "A" indicates the device belongs to the AEC-Q101 qualified variant group covering 1.5SMC6.8A to 1.5SMC220A, and "H" specifies packaging in 7-inch diameter plastic tape and reel with 850 units per reel - confirmed in the Ordering Information table on page 3 of Vishay document 88303.
How does the thermal performance of the 1.5SMC36AHE3_A/H compare to similar TVS diodes?
The 1.5SMC36AHE3_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 - significantly lower than SMA-package alternatives (e.g., SMAJ36A at 110 °C/W). This enables higher sustained power handling and improved reliability in compact, thermally constrained layouts typical of automotive and industrial PCBs.
Does the 1.5SMC36AHE3_A/H have bidirectional capability?
No, the 1.5SMC36AHE3_A/H is a unidirectional TVS diode, as indicated by the "A" suffix (vs. "CA" for bidirectional variants). Its cathode band marks the terminal that must be connected to the protected line, while the anode connects to ground - it conducts only during reverse overvoltage events and blocks forward current above ~1.2 V.
1.5SMC36AHE3_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:
- 1
- Bidirectional Channels:
- -
- 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)
1.5SMC36AHE3_A/H FAQ
1.How can I place an order for 1.5SMC36AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC36AHE3_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 1.5SMC36AHE3_A/H reliable?
The price and inventory of 1.5SMC36AHE3_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 1.5SMC36AHE3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC36AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC36AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC36AHE3_A/H?
1.5SMC36AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC36AHE3_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 1.5SMC36AHE3_A/H?
For technical support, including 1.5SMC36AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC36AHE3_A/H requirements.
6.How does Aetrix verify that 1.5SMC36AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC36AHE3_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 1.5SMC36AHE3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC36AHE3_A/H?
All 1.5SMC36AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC36AHE3_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 1.5SMC36AHE3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC36AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC36AHE3_A/H Tags
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