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Vishay General Semiconductor - Diodes Division 1.5SMC36AHE3_A/I
- Part No.:
- 1.5SMC36AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC36AHE3_A/I.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,752
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Product details
Overview
1.5SMC36AHE3_A/I from Vishay General Semiconductor is a unidirectional 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 capability with 10/1000 µs waveform - deployed in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the 1.5SMC36AHE3_A/I datasheet, 1.5SMC36AHE3_A/I pinout, 1.5SMC36AHE3_A/I application, or 1.5SMC36AHE3_A/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, SMC (DO-214AB) package compatibility, and clamping performance under repetitive surge conditions per IEC 61000-4-5.
Technical Context
This device operates as a silicon avalanche diode with glass-passivated junction, delivering fast response time (<1 ps) and low incremental surge resistance to clamp transient overvoltages before downstream components are damaged. Its unidirectional configuration enables integration into DC power rails and biased signal paths where reverse conduction must be blocked.
The 1.5SMC36AHE3_A/I is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. It supports 200 A non-repetitive forward surge current (IFSM) and exhibits a VBR temperature coefficient of +0.099 %/°C - enabling stable clamping across automotive thermal ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 34.2 V / 37.8 V at IT = 1.0 mA - defines reliable avalanche initiation threshold under standardized test conditions |
| VWM | 30.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 49.9 V at 30.1 A - clamping voltage during 10/1000 µs surge, limiting stress on protected ICs |
| PPPM | 1500 W - peak pulse power handling capacity, enabling protection against IEC 61000-4-5 Level 4 surges |
| IFSM | 200 A - single half-sine surge rating (8.3 ms), supporting high-energy inductive switch-off events |
| TJ max. | +150 °C - junction temperature limit compatible with under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
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. Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection in reverse-biased protection configuration | Connected to protected line (e.g., VIN); conducts when transient exceeds VWM |
| Anode (unmarked end) | Reference/ground return path | Typically tied to system ground or low-impedance return plane to complete clamping path |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Enables compliance with IEC 61000-4-5 surge immunity up to 4 kV (line-to-ground) without derating |
| Glass-passivated chip junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity stress |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring zero-failure field reliability |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow assembly without preconditioning or special handling |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., load dump, ESD), improving protection margin |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in engine control units against load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND, clamping surges within nanoseconds. Use Value: Limits voltage to ≤49.9 V during 30.1 A transients, preventing damage to 36 V-rated LDOs and MCU IO cells. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) of pressure sensors exposed to ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS mounted at connector interface, shunting transients before reaching op-amp input stage. Use Value: Clamps 8 kV contact ESD (IEC 61000-4-2) to <50 V, preserving 16-bit ADC accuracy and avoiding latch-up. |
| Telecom DC Power Feeds | Consumer Device USB Port Protection |
Use Scenario: Securing -48 V DC telecom rectifier outputs against lightning-induced surges on outdoor cabinet feeds. IC Role / Device Role / Timing Role: Unidirectional TVS on negative rail, referenced to chassis ground with low-inductance layout. Use Value: Absorbs 1500 W pulses without degradation, maintaining system uptime during Category B surge events. |
Use Scenario: Adding secondary overvoltage protection on VUSB (5 V) lines of portable medical monitors connected to wall adapters. IC Role / Device Role / Timing Role: Standoff voltage (30.8 V) avoids interference with normal 5 V operation while reacting to >36 V faults. Use Value: Prevents adapter fault propagation to USB PHY and SoC, meeting IEC 62368-1 transient immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/57T | Same VWM/VBR/VC, but lower PPPM = 400 W and SMA package (DO-214AC); not AEC-Q101 qualified | Limited to consumer/industrial use; unsuitable for automotive under-hood deployment | Select only for cost-sensitive, non-automotive designs with lower surge exposure |
| 1.5KE36A | Through-hole TO-204AE (DO-201AE) package; identical electrical specs but higher RθJA (100 °C/W vs. 75 °C/W) | Requires PCB real estate and wave-solder process; less suitable for high-density SMT layouts | Prefer for legacy through-hole systems or prototyping where rework tolerance is prioritized over density |
Compared with SMAJ36A-E3/57T and 1.5KE36A, the 1.5SMC36AHE3_A/I delivers automotive-grade reliability in a compact SMT footprint with superior thermal dissipation - making it optimal for space-constrained, high-surge automotive and industrial modules.
Availability
1.5SMC36AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom DC power feeds, and consumer USB power protection requiring stable component supply and AEC-Q101 assurance.
Supply support for 1.5SMC36AHE3_A/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The 1.5SMC Series targets high-energy transient suppression in harsh environments, with design focus on automotive, industrial, and telecom infrastructure where robustness, AEC-Q101 compliance, and repeatable clamping are critical.
FAQ
What is the clamping voltage of the 1.5SMC36AHE3_A/I under a 10/1000 µs surge?
The 1.5SMC36AHE3_A/I has a maximum clamping voltage (VC) of 49.9 V at 30.1 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88303 and ensures protected circuitry remains below critical voltage thresholds during surge events. The 1.5SMC36AHE3_A/I maintains this clamping performance across its full operating temperature range.
Is the 1.5SMC36AHE3_A/I suitable for automotive applications?
Yes, the 1.5SMC36AHE3_A/I is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix, indicating RoHS-compliant construction and qualification to automotive reliability standards. It is deployed in engine control units, body electronics, and ADAS modules where sustained operation from −65 °C to +150 °C and immunity to load dump surges are required. The 1.5SMC36AHE3_A/I meets all stress-test requirements defined in AEC-Q101 Rev D.
What does the "_A/I" suffix mean in 1.5SMC36AHE3_A/I?
The "_A/I" suffix in 1.5SMC36AHE3_A/I indicates packaging and revision: "A" denotes the voltage variant (36 V nominal), and "I" specifies 13-inch plastic tape-and-reel delivery with 3500 units per reel. This matches Vishay's ordering code structure in Document 88303, where "I" corresponds to the larger reel format used for high-volume SMT assembly. The 1.5SMC36AHE3_A/I is fully compatible with standard pick-and-place equipment calibrated for DO-214AB footprints.
How does the 1.5SMC36AHE3_A/I differ from bidirectional TVS diodes like 1.5SMC36CA?
The 1.5SMC36AHE3_A/I is unidirectional and blocks reverse current beyond VWM = 30.8 V, making it ideal for DC power rail protection. In contrast, 1.5SMC36CA is bidirectional with symmetrical clamping in both polarities and no cathode marking - suited for AC lines or data buses. The 1.5SMC36AHE3_A/I offers tighter VBR tolerance (±5%) and AEC-Q101 qualification, whereas 1.5SMC36CA lacks automotive qualification and has higher VC in reverse direction.
What is the thermal resistance of the 1.5SMC36AHE3_A/I, and how does it affect layout?
The 1.5SMC36AHE3_A/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 mechanical drawing. To maintain safe junction temperatures under repeated surges, PCB layout must provide adequate copper area and avoid thermal bottlenecks - the 1.5SMC36AHE3_A/I's thermal performance directly impacts its ability to sustain multiple 1500 W pulses without derating.
1.5SMC36AHE3_A/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:
- 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/I FAQ
1.How can I place an order for 1.5SMC36AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC36AHE3_A/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 1.5SMC36AHE3_A/I reliable?
The price and inventory of 1.5SMC36AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC36AHE3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC36AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC36AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC36AHE3_A/I?
1.5SMC36AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC36AHE3_A/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 1.5SMC36AHE3_A/I?
For technical support, including 1.5SMC36AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC36AHE3_A/I requirements.
6.How does Aetrix verify that 1.5SMC36AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC36AHE3_A/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 1.5SMC36AHE3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC36AHE3_A/I?
All 1.5SMC36AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC36AHE3_A/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 1.5SMC36AHE3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC36AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC36AHE3_A/I Tags
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