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Vishay General Semiconductor - Diodes Division SMCJ36A-E3/9AT
- Part No.:
- SMCJ36A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ36A-E3/9AT.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,315
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Product details
Overview
SMCJ36A-E3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. It features a 36 V standoff voltage (VWM), 40.0–44.2 V breakdown voltage (VBR) at 1 mA, 58.1 V maximum clamping voltage (VC) at 25.8 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform.
For engineers reviewing the SMCJ36A-E3/9AT datasheet, SMCJ36A-E3/9AT pinout, SMCJ36A-E3/9AT application, or SMCJ36A-E3/9AT equivalent, key selection criteria include clamping performance under 25.8 A surge, thermal resistance (RθJA = 75 °C/W), unidirectional polarity marking, RoHS-compliant matte tin plating, and compatibility with automated placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ36A-E3/9AT operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology for stable breakdown behavior and low incremental surge resistance. Its clamping action begins at VWM = 36 V and limits transient voltages to ≤58.1 V during 10/1000 μs surges up to 25.8 A, enabling robust protection of downstream ICs and MOSFETs without forward conduction during normal operation.
It meets J-STD-020 MSL Level 1 (peak reflow ≤260 °C), supports 200 A non-repetitive forward surge (IFSM), and maintains operation across -55 °C to +150 °C junction temperature range. The cathode band denotes polarity, and its SMC package provides mechanical robustness while meeting UL 94 V-0 flammability rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 40.0 V / 44.2 V at IT = 1 mA - Ensures reliable avalanche turn-on within defined tolerance |
| VC @ IPPM | 58.1 V at 25.8 A - Limits transient voltage seen by protected circuit during worst-case surge |
| PPPM | 1500 W (10/1000 μs) - Withstands high-energy transients common in automotive and industrial environments |
| ID @ VWM | 1.0 μA - Ultra-low leakage preserves signal integrity and minimizes standby power loss |
| TJ max | +150 °C - Enables use in under-hood automotive and high-temperature industrial PCBs |
| RθJA | 75 °C/W - Defines thermal derating needed when mounted on standard 8 mm × 8 mm copper pads |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile, UL 94 V-0 compliant molding compound. Cathode indicated by molded band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during clamping (reverse bias) | Connected to protected line; conducts surge current toward ground when V > VBR |
| Cathode | Current exit point during clamping (reverse bias) | Connected to system ground; marked by visible band; defines unidirectional polarity |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients, improving protection margin for 3.3 V/5 V logic |
| MSL Level 1 compliance | Supports lead-free reflow soldering at 260 °C peak without moisture-induced damage |
| RoHS-compliant matte tin plating | Enables reliable solder wetting per J-STD-002 and passes JESD 22-B102 whisker testing (Class 2) |
| 1500 W peak pulse power | Provides headroom for IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge immunity in industrial control systems |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges above 36 V. Use Value: Clamps 12 V system transients to ≤58.1 V, preventing damage to MCU power supplies and CAN transceivers rated for 40 V absolute max. | Use Scenario: Shielding 24 V digital input modules from field-wiring induced surges in factory automation. IC Role / Device Role / Timing Role: Standoff protection device on dry-contact inputs, absorbing energy from inductive coil de-energization. Use Value: Handles 25.8 A surge current without degradation, maintaining <1 μA leakage to avoid false triggering of optocoupled inputs. |
| Telecom DC Power Feeds | Consumer Appliance Motor Control |
Use Scenario: Safeguarding PoE-powered equipment front-end rectifiers and DC-DC converters. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 48 V DC input rails subjected to lightning-induced surges. Use Value: 1500 W PPPM rating ensures survival of 10/1000 μs transients up to 4 kV per IEC 61000-4-5, preserving upstream FETs and controllers. | Use Scenario: Protecting microcontroller GPIOs and gate drivers from back-EMF spikes generated by brushed DC motors. IC Role / Device Role / Timing Role: Localized TVS on motor driver output traces, placed adjacent to H-bridge MOSFETs. Use Value: Fast response time and low clamping voltage (58.1 V) prevent gate oxide rupture in 60 V-rated MOSFETs during commutation events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A-E3/52T | Lower PPPM (600 W), smaller SMB (DO-214AA) package, same VWM/VBR/VC specs | Reduced surge handling; suitable only for lower-energy transients (e.g., ESD-only zones) | Select when board space is constrained and surge threat level is ≤1 kV IEC 61000-4-5 |
| SMCJ36CA-E3/9AT | Bidirectional variant; identical VWM/VBR/VC but symmetric clamping in both polarities | Required for AC-coupled or floating signal lines where polarity reversal may occur | Choose for RS-485, CAN bus, or sensor bridge circuits needing bidirectional protection |
Compared with SMCJ36A-E3/9AT, SMBJ36A-E3/52T trades surge capacity for footprint reduction, while SMCJ36CA-E3/9AT adds bidirectional symmetry at no clamping performance cost-making the original optimal for cost-sensitive, high-energy unidirectional DC rail protection.
Availability
SMCJ36A-E3/9AT is available at Aetrix Electronics and suitable for automotive power distribution, industrial PLC I/O protection, telecom DC power feeds, and consumer appliance motor control requiring stable component supply and full traceability.
Supply support for SMCJ36A-E3/9AT 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 optimization.
The SMCJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where robustness against load dump, lightning, and inductive switching is critical.
FAQ
What is the maximum clamping voltage of the SMCJ36A-E3/9AT under a 10/1000 μs surge?
The SMCJ36A-E3/9AT has a maximum clamping voltage (VC) of 58.1 V when subjected to its rated peak pulse current of 25.8 A using a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The SMCJ36A-E3/9AT maintains this clamping performance consistently across its specified operating temperature range.
Is the SMCJ36A-E3/9AT RoHS-compliant and suitable for lead-free reflow?
Yes, the SMCJ36A-E3/9AT carries the "E3" suffix indicating RoHS-compliance and qualification for lead-free reflow soldering. It meets J-STD-020 MSL Level 1 with a maximum peak reflow temperature of 260 °C and uses matte tin-plated leads qualified per J-STD-002 and JESD 22-B102 Class 2 whisker testing. The SMCJ36A-E3/9AT is fully compatible with standard Pb-free assembly processes.
How does the SMCJ36A-E3/9AT differ from the bidirectional SMCJ36CA-E3/9AT?
The SMCJ36A-E3/9AT is unidirectional, with polarity marked by a cathode band and intended for DC rail protection where voltage polarity is fixed. The SMCJ36CA-E3/9AT is bidirectional, offering symmetric clamping in both directions and no polarity marking-required for AC signals or floating nodes. Both share identical VWM (36 V), VBR (40.0–44.2 V), VC (58.1 V), and PPPM (1500 W), but the SMCJ36A-E3/9AT cannot replace the CA version in bidirectional applications.
What is the thermal resistance junction-to-ambient for the SMCJ36A-E3/9AT?
The SMCJ36A-E3/9AT 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" (8.0 mm × 8.0 mm) copper pads per terminal. This value assumes still air conditions and is used to calculate allowable power dissipation and junction temperature rise. Derating is required above TA = 25 °C per Figure 2 in the Vishay datasheet 88394, and the SMCJ36A-E3/9AT supports TJ up to +150 °C.
Can the SMCJ36A-E3/9AT be used in automotive applications?
Yes, the SMCJ36A-E3/9AT is widely deployed in automotive electronics for load dump and ISO 7637-2 transient protection. While the base SMCJ36A-E3/9AT is commercial-grade, Vishay offers AEC-Q101-qualified variants (e.g., SMCJ36AHE3_X) with the "HE3" suffix. The SMCJ36A-E3/9AT itself meets key automotive requirements including 150 °C max junction temperature, MSL Level 1, and robust surge capability-making it suitable for non-safety-critical modules like body control units and infotainment power rails.
SMCJ36A-E3/9AT 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ36A-E3/9AT FAQ
1.How can I place an order for SMCJ36A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ36A-E3/9AT 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 SMCJ36A-E3/9AT reliable?
The price and inventory of SMCJ36A-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ36A-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ36A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ36A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ36A-E3/9AT?
SMCJ36A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ36A-E3/9AT 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 SMCJ36A-E3/9AT?
For technical support, including SMCJ36A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ36A-E3/9AT requirements.
6.How does Aetrix verify that SMCJ36A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ36A-E3/9AT 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 SMCJ36A-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ36A-E3/9AT?
All SMCJ36A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ36A-E3/9AT, 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 SMCJ36A-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ36A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ36A-E3/9AT Tags
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