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Vishay General Semiconductor - Diodes Division SMCJ36AHE3_A/H
- Part No.:
- SMCJ36AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ36AHE3_A/H.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMCJ36AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients up to 58.1 V at 25.8 A (10/1000 µs waveform), with 1500 W peak pulse power rating and 36 V stand-off voltage. It protects MOSFETs, ICs, and sensor signal lines in automotive power systems, industrial motor drives, and telecom interfaces.
For engineers reviewing the SMCJ36AHE3_A/H datasheet, SMCJ36AHE3_A/H pinout, SMCJ36AHE3_A/H application, or SMCJ36AHE3_A/H equivalent, key selection criteria include clamping voltage (VC = 58.1 V), breakdown voltage range (40.0–44.2 V), AEC-Q101 qualification, RoHS compliance, and SMC package thermal performance (RθJA = 75 °C/W).
Technical Context
The SMCJ36AHE3_A/H operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its minimum breakdown voltage of 40.0 V at 1 mA test current. Its glass-passivated junction ensures stable clamping under repetitive surge events, and its low incremental surge resistance enables rapid energy diversion during transient events.
Designed for PCB-level protection, it complies with IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and ISO 7637-2 (automotive load dump), with polarity marked by cathode band and rated for -55 °C to +150 °C junction temperature operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 36 V - Maximum continuous reverse operating voltage before leakage exceeds 1 μA; defines safe working margin below breakdown. |
| VBR (Breakdown Voltage) | 40.0–44.2 V at 1 mA - Confirmed avalanche initiation range; ensures reliable turn-on before downstream component damage. |
| VC (Clamping Voltage) | 58.1 V at IPPM = 25.8 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; critical for IC voltage tolerance margining. |
| PPPM (Peak Pulse Power) | 1500 W - Maximum transient energy absorption capability under standardized 10/1000 µs waveform; determines survivability against lightning or inductive spikes. |
| IR (Reverse Leakage) | 1.0 μA at VWM - Low leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
| TJ max. | +150 °C - Enables use in under-hood automotive environments and thermally constrained industrial enclosures without derating. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per AEC-Q101 Rev D. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, MSL Level 1 (260 °C peak reflow), UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when reverse voltage exceeds VBR. |
| Anode | Reference/ground return | Typically tied to system ground plane; completes clamping path during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics applications requiring zero-defect reliability over lifetime. |
| 1500 W peak pulse power | Handles severe transients such as ISO 7637-2 Pulse 5a (load dump) without degradation across 1000+ events. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on protected ICs-critical for 3.3 V or 5 V logic interfacing with 36 V supply rails. |
| Glass-passivated junction | Ensures stable VBR over time and temperature, with <0.1 %/°C drift and no parameter shift after 1000 h HTOL stress. |
| SMC package thermal performance | RθJL = 15 °C/W enables efficient heat transfer to PCB copper pads, supporting sustained 6.5 W power dissipation at TA = 50 °C. |
Applications
| Automotive Power Distribution | Industrial Motor Drive Control |
|---|---|
|
Use Scenario: Protecting gate drivers and MCU I/O pins from load dump transients in 12 V/24 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground, clamping surges within nanoseconds. Use Value: Limits voltage to ≤58.1 V during 120 V/500 ms load dump events, preventing latch-up or oxide rupture in 40 V-rated gate drivers. |
Use Scenario: Safeguarding encoder feedback lines and analog sensor inputs in variable-frequency drives exposed to switching noise. IC Role / Device Role / Timing Role: Signal-line TVS mounted adjacent to connector, shunting EFT bursts before reaching ADC front-end. Use Value: 1.0 μA leakage at 36 V preserves 16-bit analog accuracy; 58.1 V clamping prevents saturation of ±10 V instrumentation amplifiers. |
| Telecom DC Power Interface | Consumer Appliance Mainboard Protection |
|
Use Scenario: Shielding PoE-powered Ethernet PHYs and DC-DC controllers from induced surges on 48 V input rails. IC Role / Device Role / Timing Role: Primary rail clamp upstream of DC-DC converter, absorbing IEC 61000-4-5 Combination Wave (1.2/50 µs + 8/20 µs). Use Value: 1500 W rating sustains multiple 1 kV/0.5 J surges; SMC package allows placement near input connector with minimal trace inductance. |
Use Scenario: Guarding microcontroller reset lines and communication buses (I²C, UART) against ESD and relay coil kickback in washing machines. IC Role / Device Role / Timing Role: Localized point-of-use protection on PCB, oriented with cathode toward MCU I/O pin. Use Value: 40.0–44.2 V VBR aligns with 36 V VWM to avoid false triggering during normal 3.3 V/5 V logic transitions while blocking >50 V transients. |
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 | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W), same VWM/VBR/VC specs. | Not suitable for automotive load dump or high-energy industrial surges; limited to consumer-grade ESD/EFT only. | Select only if space-constrained and surge energy is ≤400 W; verify thermal margin with reduced copper pad area. |
| 1.5KE36A | Through-hole DO-201 package, identical electrical specs (VWM = 36 V, VC = 58.1 V, PPPM = 1500 W), no AEC-Q101 qualification. | Acceptable for industrial prototypes but not for production automotive designs requiring AEC-Q101 traceability and qualification reports. | Use where board assembly uses through-hole processes or where AEC-Q101 is not mandated; requires different PCB layout and reflow profile. |
Compared with SMAJ36A-E3/57T and 1.5KE36A, the SMCJ36AHE3_A/H uniquely combines 1500 W surge capability, AEC-Q101 qualification, and SMC surface-mount compatibility-enabling automotive-grade robustness without sacrificing automated assembly efficiency or thermal performance.
Availability
SMCJ36AHE3_A/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive control, telecom DC interface, and consumer appliance mainboard protection requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMCJ36AHE3_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, precision, and application-specific validation.
The SMCJ series targets high-energy transient suppression in harsh environments, with design focus on automotive, industrial, and telecom infrastructure where failure modes must be eliminated-not just mitigated.
FAQ
What is the maximum clamping voltage of the SMCJ36AHE3_A/H under standard test conditions?
The SMCJ36AHE3_A/H has a maximum clamping voltage (VC) of 58.1 V when subjected to a 10/1000 µs waveform at its peak pulse current of 25.8 A. This value is measured per IEC 61000-4-5 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMCJ36AHE3_A/H maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C), making it suitable for under-hood automotive applications where thermal stability is critical.
Is the SMCJ36AHE3_A/H AEC-Q101 qualified, and what does that mean for automotive use?
Yes, the SMCJ36AHE3_A/H is AEC-Q101 qualified, as confirmed by Vishay's official documentation and ordering code suffix "HE3". This qualification validates the device for use in automotive electronic systems-including powertrain, chassis, and body control modules-through rigorous stress testing (e.g., temperature cycling, HTRB, ESD, and mechanical shock). The SMCJ36AHE3_A/H meets all requirements of AEC-Q101 Rev D, ensuring long-term reliability in vehicles where component failure could impact safety or functionality.
How does the SMCJ36AHE3_A/H differ from the bidirectional SMCJ36CA variant?
The SMCJ36AHE3_A/H is unidirectional, meaning it conducts only in reverse bias above its breakdown voltage and blocks forward current beyond ~3.5 V. In contrast, the SMCJ36CA is bidirectional and symmetrical, providing clamping in both polarities-ideal for AC signal lines or differential buses. The SMCJ36AHE3_A/H features a cathode band marking and is optimized for DC rail protection, whereas the SMCJ36CA lacks polarity marking and exhibits identical VBR in both directions. Their clamping voltages and surge ratings are otherwise matched.
What is the thermal resistance and recommended PCB layout for optimal performance of the SMCJ36AHE3_A/H?
The SMCJ36AHE3_A/H 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, per Vishay's datasheet Fig. 2. To achieve this rating, the PCB must use minimum recommended pad layout per DO-214AB outline, with solid internal ground planes and thermal vias under pads. The SMCJ36AHE3_A/H also has RθJL = 15 °C/W, confirming efficient conduction from junction to lead-so adequate copper area directly connected to each terminal is essential for sustained 6.5 W power dissipation.
Can the SMCJ36AHE3_A/H replace older 1.5KE36A parts in existing designs?
The SMCJ36AHE3_A/H matches the 1.5KE36A's core electrical parameters-VWM = 36 V, VBR = 40.0–44.2 V, VC = 58.1 V, and PPPM = 1500 W-but differs in package (SMC vs. DO-201), mounting method (SMT vs. through-hole), and qualification (AEC-Q101 vs. commercial-only). While electrical substitution is feasible, the SMCJ36AHE3_A/H requires PCB redesign for SMT placement and reflow profiling. Its AEC-Q101 status and lower profile make it preferable for new automotive or high-reliability industrial designs, but legacy through-hole boards should retain 1.5KE36A unless layout revision is planned.
SMCJ36AHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 25.8A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ36AHE3_A/H FAQ
1.How can I place an order for SMCJ36AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ36AHE3_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 SMCJ36AHE3_A/H reliable?
The price and inventory of SMCJ36AHE3_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 SMCJ36AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMCJ36AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ36AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ36AHE3_A/H?
SMCJ36AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ36AHE3_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 SMCJ36AHE3_A/H?
For technical support, including SMCJ36AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ36AHE3_A/H requirements.
6.How does Aetrix verify that SMCJ36AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ36AHE3_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 SMCJ36AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMCJ36AHE3_A/H?
All SMCJ36AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ36AHE3_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 SMCJ36AHE3_A/H part is unused and in its original packaging.
Return procedure for SMCJ36AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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