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Vishay General Semiconductor - Diodes Division SMCJ36AHM3_A/H
- Part No.:
- SMCJ36AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ36AHM3_A/H.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,380
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Product details
Overview
SMCJ36AHM3_A/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 36 V stand-off 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 rating (10/1000 µs waveform). It is halogen-free, RoHS-compliant, and qualified to AEC-Q101 for automotive-grade reliability.
For engineers reviewing the SMCJ36AHM3_A/H datasheet, SMCJ36AHM3_A/H pinout, SMCJ36AHM3_A/H application, or SMCJ36AHM3_A/H equivalent, this device is selected for high-energy surge suppression in automotive power modules, industrial sensor interfaces, and DC-DC converter input stages where low clamping voltage, fast response (<1 ns), and stable thermal performance up to 150 °C junction temperature are critical.
Technical Context
The SMCJ36AHM3_A/H operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve sub-nanosecond response to transients. Its clamping behavior is defined by a low incremental surge resistance and tightly controlled VBR tolerance (±5%), ensuring predictable protection under repetitive surge conditions per IEC 61000-4-5.
Thermally, it exhibits RθJA = 75 °C/W and RθJL = 15 °C/W, enabling effective heat dissipation when mounted on 8.0 mm × 8.0 mm copper pads per terminal. The device is rated for -55 °C to +150 °C operating junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse working voltage before clamping begins; sets safe operating margin for 36 V nominal DC systems. |
| VBR (min/max) | 40.0 V / 44.2 V at IT = 1 mA - Confirmed breakdown range ensures reliable turn-on without premature conduction during normal operation. |
| VC @ IPPM | 58.1 V at 25.8 A (10/1000 µs) - Clamping voltage limits downstream IC stress to ≤58.1 V during worst-case surge events. |
| PPPM | 1500 W - Peak pulse power handling capacity supports high-energy transients like ISO 7637-2 Pulse 5a/b in automotive environments. |
| TJ max. | +150 °C - Enables use in under-hood automotive electronics and industrial power supplies with elevated ambient temperatures. |
| Package | SMC (DO-214AB) - Surface-mount package with 8.13 mm × 6.22 mm footprint and 3.20 mm height; compatible with automated placement and reflow soldering. |
| AEC-Q101 | Qualified - Validated for automotive applications including engine control units, body electronics, and ADAS power domains. |
Pinout & Package
SMCJ36AHM3_A/H uses the SMC (DO-214AB) package: a surface-mount, molded plastic case with two terminals, matte tin-plated leads, and cathode band marking on the unidirectional variant. Polarity is indicated by a visible band denoting the cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes conduction path during reverse-biased transient clamping. |
| Cathode | High-side connection point | Connected to protected line (e.g., 36 V rail); defines polarity-sensitive clamping direction for unidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| Low incremental surge resistance | Enables tighter clamping voltage (VC = 58.1 V) under 25.8 A surge, minimizing voltage overshoot on protected circuits. |
| Glass passivated chip junction | Ensures long-term stability and reliability under thermal cycling and humidity exposure, critical for automotive and industrial deployments. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets environmental compliance requirements for global OEM supply chains without compromising electrical performance. |
| MSL Level 1 rating | Supports standard SMT reflow processes with 260 °C peak temperature, eliminating moisture sensitivity handling constraints. |
| Very fast response time | Sub-nanosecond turn-on protects sensitive MOSFETs and microcontrollers against ESD and lightning-induced surges before damage occurs. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 36 V battery-fed ECUs and lighting modules from load dump and alternator ripple transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 36 V rail and chassis ground to clamp positive-going surges above 44.2 V. Use Value: Limits transient voltage to ≤58.1 V, preventing latch-up or gate oxide failure in downstream PMICs and CAN transceivers. |
Use Scenario: Shielding 4–20 mA current loop inputs and analog sensor outputs in PLC I/O modules from field wiring surges. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across signal and return lines to absorb induced common-mode transients. Use Value: Maintains signal integrity by clamping transients within 100 ns while adding <1 pF capacitance, avoiding bandwidth degradation. |
| DC-DC Converter Input Stage | Telecom Power Supply Surge Suppression |
Use Scenario: Safeguarding buck converter inputs in telecom base station power supplies exposed to AC line surges and lightning coupling. IC Role / Device Role / Timing Role: Primary-level TVS on 36 V intermediate bus to limit energy delivered to upstream rectifiers and downstream controllers. Use Value: Absorbs 1500 W peak pulses without degradation, extending lifetime of electrolytic input capacitors and MOSFETs. |
Use Scenario: Protecting PoE-powered equipment front-ends against Ethernet cable-induced surges per IEEE 802.3bt. IC Role / Device Role / Timing Role: Unidirectional clamping device on DC input side of PD controller to suppress differential-mode transients. Use Value: Withstands repeated 10/1000 µs surges up to 25.8 A while maintaining VWM = 36 V, ensuring uninterrupted power delivery. |
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 | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher VC (60.0 V at 6.9 A) | Not suitable for high-energy automotive load dump; limited to low-power signal or auxiliary rail protection. | Select only for space-constrained designs with ≤400 W surge requirements and no AEC-Q101 mandate. |
| SMCJ36AHE3_A/H | Same electrical specs and SMC package, but RoHS-compliant commercial grade (not halogen-free or AEC-Q101 qualified) | Lacks automotive qualification and halogen-free certification; acceptable for industrial/commercial non-automotive use. | Choose when AEC-Q101 and halogen-free compliance are not required, and cost optimization is prioritized. |
Compared with SMCJ36AHM3_A/H, SMAJ36A-E3/57T offers reduced surge capability and no automotive qualification, while SMCJ36AHE3_A/H matches performance but omits halogen-free construction and AEC-Q101 validation-making SMCJ36AHM3_A/H the sole option meeting full automotive environmental and reliability requirements.
Availability
SMCJ36AHM3_A/H 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, AEC-Q101 validation, and halogen-free compliance.
Supply support for SMCJ36AHM3_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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The SMCJ series was developed specifically for high-power transient suppression in harsh environments-including automotive, industrial, and telecom-where consistent clamping, thermal resilience, and qualification rigor are mandatory.
FAQ
What is the clamping voltage of SMCJ36AHM3_A/H at its rated peak pulse current?
The SMCJ36AHM3_A/H has a maximum clamping voltage (VC) of 58.1 V at 25.8 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected circuitry will not experience voltages exceeding 58.1 V during worst-case surge events, making SMCJ36AHM3_A/H suitable for safeguarding 36 V systems with tight voltage margins.
Is SMCJ36AHM3_A/H qualified for automotive applications?
Yes, SMCJ36AHM3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation in datasheet 88394 (Revision 09-Jan-2024). This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and surge endurance-ensuring suitability for under-hood and chassis-mounted automotive electronics where SMCJ36AHM3_A/H is deployed in power distribution modules and ADAS subsystems.
What does the "HM3" suffix indicate in SMCJ36AHM3_A/H?
The "HM3" suffix in SMCJ36AHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Per Vishay's ordering information, HM3 devices meet JESD 201 Class 2 whisker resistance, UL 94 V-0 flammability, and automotive reliability standards-distinguishing SMCJ36AHM3_A/H from commercial-grade variants like SMCJ36A-E3/57T and confirming its readiness for regulated automotive supply chains.
How does the SMCJ36AHM3_A/H package compare to SMAJ or SMBJ series in terms of power handling?
The SMCJ36AHM3_A/H uses the SMC (DO-214AB) package, which supports 1500 W peak pulse power-significantly higher than the SMAJ series (400 W, DO-214AC) and SMBJ series (600 W, DO-214AA). Its larger thermal mass and lower RθJL (15 °C/W) enable superior energy absorption and thermal stability, making SMCJ36AHM3_A/H the appropriate choice for high-energy transients where SMAJ36A or SMBJ36A would fail prematurely.
Can SMCJ36AHM3_A/H be used in bidirectional configurations?
No, SMCJ36AHM3_A/H is a unidirectional TVS diode, as indicated by the "A" (not "CA") suffix and cathode band marking. Bidirectional operation requires the "CA" variant (e.g., SMCJ36CA), which lacks polarity marking and conducts symmetrically. Using SMCJ36AHM3_A/H in bidirectional applications risks open-circuit failure during negative transients, so SMCJ36AHM3_A/H must be installed with correct anode–cathode orientation relative to the protected rail.
SMCJ36AHM3_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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ36AHM3_A/H FAQ
1.How can I place an order for SMCJ36AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ36AHM3_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 SMCJ36AHM3_A/H reliable?
The price and inventory of SMCJ36AHM3_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 SMCJ36AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMCJ36AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ36AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ36AHM3_A/H?
SMCJ36AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ36AHM3_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 SMCJ36AHM3_A/H?
For technical support, including SMCJ36AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ36AHM3_A/H requirements.
6.How does Aetrix verify that SMCJ36AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ36AHM3_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 SMCJ36AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMCJ36AHM3_A/H?
All SMCJ36AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ36AHM3_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 SMCJ36AHM3_A/H part is unused and in its original packaging.
Return procedure for SMCJ36AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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