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Vishay General Semiconductor - Diodes Division SMCJ36AHE3/57T
- Part No.:
- SMCJ36AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ36AHE3/57T.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,047
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Product details
Overview
SMCJ36AHE3/57T 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 standoff voltage (VWM), 40.0–44.2 V breakdown range (VBR at 1 mA), 58.1 V clamping voltage (VC) at 25.8 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive ECUs, industrial I/O modules, and DC power input stages.
For engineers reviewing the SMCJ36AHE3/57T datasheet, SMCJ36AHE3/57T pinout, SMCJ36AHE3/57T application, or SMCJ36AHE3/57T equivalent, key selection criteria include clamping performance under 25.8 A surge, AEC-Q101 qualification status, SMC (DO-214AB) package thermal resistance (RθJA = 75 °C/W), and unidirectional polarity marking for correct PCB orientation.
Technical Context
The SMCJ36AHE3/57T operates as a silicon avalanche diode with glass-passivated junction, delivering sub-nanosecond response to transients. Its unidirectional configuration uses cathode-band polarity identification and exhibits 1.0 μA max reverse leakage at 36 V, enabling low-power standby integrity in always-on circuits.
Thermally, it sustains 150 °C maximum junction temperature and derates linearly above 25 °C ambient per Figure 2; mounted on 8.0 mm × 8.0 mm copper pads, it achieves 1500 W surge handling while maintaining 6.5 W steady-state dissipation at 50 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working limit in protected circuit. |
| VBR (min/max) | 40.0 V / 44.2 V at 1 mA - Breakdown onset range; ensures reliable avalanche conduction onset within specified tolerance. |
| VC @ IPPM | 58.1 V at 25.8 A - Clamped voltage during 10/1000 μs surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 1500 W - Peak pulse power handling capability; validates protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on standard pad layout; informs heatsinking requirements for sustained surge duty cycles. |
| AEC-Q101 | Qualified - Certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
| Package | SMC (DO-214AB) - Surface-mount outline with 0.320" length, 0.246" width, and matte tin-plated leads compliant with J-STD-002 solderability. |
Pinout & Package
SMCJ36AHE3/57T is housed in an SMC (DO-214AB) surface-mount package with two terminals: anode and cathode. Polarity is marked by a band on the cathode end; no marking is present on bidirectional variants. The package meets UL 94 V-0 flammability rating and supports automated placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | High-side connection point for unidirectional clamping | Connected to protected line (e.g., 36 V rail); conducts surge current to ground when voltage exceeds VBR. |
| Anode | Low-side reference terminal | Tied to system ground or common return path; completes clamping loop during transient events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| Glass-passivated junction | Ensures stable breakdown characteristics and long-term reliability under repeated surge stress without parameter drift. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., inductive switch-off), improving protection margin. |
| MSL Level 1 (260 °C peak) | Enables standard reflow soldering without moisture sensitivity concerns or pre-bake requirements. |
| RoHS-compliant & halogen-free option available | HE3 suffix denotes RoHS compliance; HM3 variant adds halogen-free molding compound for eco-sensitive designs. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 36 V battery-fed ECUs from load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor. Use Value: Clamps surges up to 58.1 V while absorbing 1500 W, preventing damage to downstream PMICs and microcontrollers. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS on 4–20 mA or 0–10 V output lines near connector interface. Use Value: Sub-ns response limits voltage excursion to <58.1 V, preserving ADC accuracy and op-amp input stage integrity. |
| DC-DC Converter Input Stage | Telecom Power Supply Surge Protection |
Use Scenario: Safeguarding buck converter inputs against 10/1000 μs surges induced by upstream switching or lightning coupling. IC Role / Device Role / Timing Role: Primary clamping device ahead of input bulk capacitor and controller IC. Use Value: Withstands 25.8 A peak current at 58.1 V clamp, ensuring converter remains functional after repeated surge exposure. |
Use Scenario: Meeting IEC 61000-4-5 Level 4 (4 kV line-earth) requirements in PoE-powered telecom equipment. IC Role / Device Role / Timing Role: Front-end TVS on primary AC/DC or DC/DC input stage before isolation barrier. Use Value: 1500 W PPPM rating enables single-device compliance without cascaded protection schemes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36AHE3/52T | Lower PPPM (600 W), smaller SMB (DO-214AA) package, same VWM/VBR/VC specs. | Suitable for space-constrained consumer or computing applications where 1500 W surge headroom is not required. | Select when board area is critical and surge threat level is moderate (e.g., IEC 61000-4-2 ESD only). |
| SMCJ36CAHE3/57T | Bidirectional variant with identical VWM (36 V), symmetric clamping in both polarities, same PPPM and package. | Required for AC-coupled or floating signal lines where reverse polarity transients must also be suppressed. | Choose when protecting differential pairs, RS-485 buses, or transformer-isolated interfaces with bipolar voltage excursions. |
Compared with SMBJ36AHE3/52T and SMCJ36CAHE3/57T, the SMCJ36AHE3/57T provides higher surge energy handling in unidirectional configurations - making it optimal for high-reliability 36 V DC systems where polarity is fixed and surge severity demands full 1500 W capacity.
Availability
SMCJ36AHE3/57T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecom power supply designs requiring stable component supply with AEC-Q101 assurance and traceable sourcing.
Supply support for SMCJ36AHE3/57T 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, 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 infrastructure where robustness against ISO 7637, IEC 61000-4-5, and ESD threats is mandatory.
FAQ
What is the clamping voltage of the SMCJ36AHE3/57T under maximum rated surge current?
The SMCJ36AHE3/57T has a maximum clamping voltage (VC) of 58.1 V at 25.8 A peak pulse current (IPPM) with 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 surge events. The SMCJ36AHE3/57T maintains this clamping performance across its qualified operating temperature range.
Is the SMCJ36AHE3/57T AEC-Q101 qualified, and what does that cover?
Yes, the SMCJ36AHE3/57T is AEC-Q101 qualified, as indicated by the "HE3" suffix. This certification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, mechanical shock, and ESD (HBM ≥ 8 kV). The qualification applies specifically to the SMCJ36AHE3/57T variant and confirms suitability for automotive powertrain, chassis, and body electronics applications.
How does the SMCJ36AHE3/57T differ from the bidirectional SMCJ36CAHE3/57T?
The SMCJ36AHE3/57T is unidirectional with cathode-band polarity marking and clamps only in reverse bias, while the SMCJ36CAHE3/57T is bidirectional with symmetrical clamping in both directions and no polarity marking. Both share identical VWM (36 V), PPPM (1500 W), and SMC package, but the SMCJ36AHE3/57T is selected for fixed-polarity DC lines where reverse conduction is not required.
What is the thermal resistance and maximum junction temperature for the SMCJ36AHE3/57T?
The SMCJ36AHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads, and a maximum junction temperature (TJ) of +150 °C. Its thermal performance supports operation in under-hood automotive environments and industrial enclosures without forced cooling, provided steady-state power dissipation remains ≤6.5 W at 50 °C ambient.
Can the SMCJ36AHE3/57T be used in place of the older SMCJ36A-E3/57T?
Yes, the SMCJ36AHE3/57T is a direct replacement for the SMCJ36A-E3/57T with enhanced qualification: both share identical electrical specs, SMC package, and RoHS compliance, but the HE3 suffix adds AEC-Q101 qualification and updated material categorization per Vishay Doc. #99912. No PCB layout or schematic changes are needed when upgrading to SMCJ36AHE3/57T.
SMCJ36AHE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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)
SMCJ36AHE3/57T FAQ
1.How can I place an order for SMCJ36AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ36AHE3/57T 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 SMCJ36AHE3/57T reliable?
The price and inventory of SMCJ36AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ36AHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ36AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ36AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ36AHE3/57T?
SMCJ36AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ36AHE3/57T 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 SMCJ36AHE3/57T?
For technical support, including SMCJ36AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ36AHE3/57T requirements.
6.How does Aetrix verify that SMCJ36AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ36AHE3/57T 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 SMCJ36AHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ36AHE3/57T?
All SMCJ36AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ36AHE3/57T, 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 SMCJ36AHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ36AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ36AHE3/57T Tags
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