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Vishay General Semiconductor - Diodes Division 1.5SMC36A-E3/57T
- Part No.:
- 1.5SMC36A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC36A-E3/57T.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:1,543
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Product details
Overview
1.5SMC36A-E3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, designed for high-energy surge protection. It features a 36 V breakdown voltage (VBR min/max = 34.2–37.8 V at 1 mA), 30.8 V stand-off voltage (VWM), clamps to ≤49.9 V at 30.1 A peak pulse current (10/1000 µs), and delivers 1500 W peak pulse power - ideal for safeguarding power rails and signal lines in automotive and industrial control modules.
For engineers reviewing the 1.5SMC36A-E3/57T datasheet, 1.5SMC36A-E3/57T pinout, 1.5SMC36A-E3/57T application, or 1.5SMC36A-E3/57T equivalent, this device serves as a RoHS-compliant, AEC-Q101-qualified transient protector with verified thermal resistance (RθJA = 75 °C/W), low incremental surge resistance, and fast response time - critical for ESD, lightning, and inductive-switching surge mitigation in space-constrained PCB layouts.
Technical Context
The 1.5SMC36A-E3/57T operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve stable reverse breakdown and precise clamping behavior under repetitive 10/1000 µs transients. Its 1500 W peak pulse rating is validated at TA = 25 °C on 8.0 mm × 8.0 mm copper pads, with derating above 25 °C per Fig. 2 of the datasheet.
It exhibits a maximum reverse leakage current of 1.0 µA at VWM = 30.8 V and a temperature coefficient of VBR = +0.099 %/°C, ensuring predictable voltage drift across its –65 °C to +150 °C operating junction range. Polarity is marked by a cathode band; no marking is used for bidirectional variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 34.2 V / 37.8 V at IT = 1 mA - defines reliable avalanche onset window for consistent clamping initiation |
| VWM | 30.8 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | ≤49.9 V at 30.1 A (10/1000 µs) - clamping voltage limiting stress on downstream ICs during surge events |
| PPPM | 1500 W - peak transient energy absorption capability under standardized surge waveform |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, guiding heatsinking requirements on standard PCB layout |
| IFSM | 200 A (8.3 ms half-sine) - surge current handling for unidirectional forward conduction during fault conditions |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating and MSL level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse voltage reference node | Connected to lower-potential side (e.g., ground or return path); enables unidirectional clamping from cathode to anode |
| Cathode | Avalanche breakdown terminal / protected line connection | Marked with band; connects to line requiring protection (e.g., 36 V supply rail); conducts surge current to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without derating on standard PCB copper |
| Glass passivated chip junction | Ensures long-term stability of VBR and low leakage (<1 µA) across temperature and lifetime cycling |
| AEC-Q101 qualified (via HE3/HM3 variants) | Validated for automotive electronics use including engine control units and ADAS sensor interfaces |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a) |
| MSL level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 36 V battery-supplied ECUs from load dump and alternator transients in 12 V/24 V dual-battery systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground, clamping surges within 1 ns to prevent damage to PMICs and microcontrollers. Use Value: Withstand 1500 W pulses while maintaining VC ≤ 49.9 V ensures downstream 5 V/3.3 V regulators remain within absolute maximum ratings. |
Use Scenario: Safeguarding analog inputs of 4–20 mA current-loop sensors exposed to field wiring-induced surges in factory automation. IC Role / Device Role / Timing Role: Connected across sensor output and return, absorbing induced lightning transients on long cable runs. Use Value: Low VWM = 30.8 V allows integration upstream of precision op-amps without affecting normal 24 V loop biasing. |
| Telecom Line Card Surge Suppression | Consumer Power Adapter Input Protection |
|
Use Scenario: Front-end protection for PoE-powered network switches subjected to Ethernet port ESD and surge events per IEC 61000-4-5. IC Role / Device Role / Timing Role: Placed on DC input rail prior to DC/DC converter, shunting surge energy before it reaches isolation transformers. Use Value: 30.1 A IPPM capacity handles multi-kV surges while RθJA = 75 °C/W supports compact board area without forced air cooling. |
Use Scenario: Secondary-side overvoltage clamp in universal-input AC/DC adapters powering USB-C PD devices. IC Role / Device Role / Timing Role: Mounted across 36 V intermediate bus to suppress flyback transformer ringing and rectifier reverse recovery spikes. Use Value: Fast response time and <1 µA leakage at 30.8 V prevent standby power loss while ensuring compliance with ENERGY STAR Level VI. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A-E3/52 | Lower PPPM = 600 W; SMB (DO-214AA) package; 36 V VBR range identical; RθJA = 85 °C/W | Not suitable for 1500 W surge events; limited to lower-energy IEC 61000-4-5 Level 2 applications | Select when board space is tighter and surge threat level is reduced; requires layout revision due to smaller footprint |
| 1.5KE36A | Through-hole (DO-201AE); same VBR/VC specs but higher RθJA (~65 °C/W on infinite heatsink); not RoHS-compliant in base version | Requires wave soldering; incompatible with fully SMT production; unsuitable for automotive AEC-Q101 programs | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ36A-E3/52 and 1.5KE36A, the 1.5SMC36A-E3/57T uniquely balances 1500 W surge capability, SMC surface-mount compatibility, RoHS compliance, and AEC-Q101 qualification - making it the preferred choice for volume automotive and industrial SMT production where reliability, thermal performance, and regulatory alignment are non-negotiable.
Availability
1.5SMC36A-E3/57T is available at Aetrix Electronics and suitable for automotive control units, industrial sensor interfaces, telecom line cards, and consumer power adapter designs requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1.5SMC36A-E3/57T 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 was engineered for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where compact size, repeatable clamping, and AEC-Q101 validation are essential.
FAQ
What is the maximum clamping voltage of the 1.5SMC36A-E3/57T under a 10/1000 µs surge?
The 1.5SMC36A-E3/57T clamps to a maximum of 49.9 V when subjected to its rated peak pulse current of 30.1 A under the standardized 10/1000 µs waveform. This value is measured per Figure 1 and Table on page 2 of the Vishay datasheet 88303 and represents the upper limit of voltage seen by protected circuitry during worst-case transient events.
Is the 1.5SMC36A-E3/57T RoHS-compliant and halogen-free?
Yes, the 1.5SMC36A-E3/57T carries the "E3" suffix, indicating it is RoHS-compliant and manufactured to commercial-grade specifications. It is not halogen-free; for halogen-free compliance, the "M3" variant (e.g., 1.5SMC36A-M3/57T) must be selected per Vishay's ordering information table on page 3 of document 88303.
Does the 1.5SMC36A-E3/57T meet AEC-Q101 qualification?
No - the 1.5SMC36A-E3/57T itself is not AEC-Q101 qualified. AEC-Q101 qualification applies only to variants with "HE3" or "HM3" suffixes (e.g., 1.5SMC36AHE3_A). The "E3" suffix denotes RoHS-compliant commercial grade only; automotive qualification requires explicit ordering of the HE3/HM3 versions.
What is the thermal resistance junction-to-ambient for the 1.5SMC36A-E3/57T?
The 1.5SMC36A-E3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the minimum recommended pad layout (0.31" × 0.31" copper pads per terminal), as specified in the Thermal Characteristics table on page 3 of Vishay document 88303.
How is polarity identified on the 1.5SMC36A-E3/57T?
The 1.5SMC36A-E3/57T is a unidirectional TVS diode, and polarity is indicated by a visible cathode band on the body of the SMC (DO-214AB) package. The banded end corresponds to the cathode terminal; the opposite end is the anode. Bidirectional variants omit this marking entirely.
1.5SMC36A-E3/57T 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC36A-E3/57T FAQ
1.How can I place an order for 1.5SMC36A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC36A-E3/57T 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 1.5SMC36A-E3/57T reliable?
The price and inventory of 1.5SMC36A-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC36A-E3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC36A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC36A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC36A-E3/57T?
1.5SMC36A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC36A-E3/57T 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 1.5SMC36A-E3/57T?
For technical support, including 1.5SMC36A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC36A-E3/57T requirements.
6.How does Aetrix verify that 1.5SMC36A-E3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC36A-E3/57T 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 1.5SMC36A-E3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC36A-E3/57T?
All 1.5SMC36A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC36A-E3/57T, 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 1.5SMC36A-E3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC36A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC36A-E3/57T Tags
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