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Vishay General Semiconductor - Diodes Division SMCJ36CAHM3/I
- Part No.:
- SMCJ36CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ36CAHM3/I.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,007
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Product details
Overview
SMCJ36CAHM3/I from Vishay General Semiconductor is a bidirectional 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 standoff voltage (VWM), 58.1 V maximum clamping voltage (VC) at 25.8 A peak pulse current (IPPM), and 1500 W peak pulse power (10/1000 µs waveform), commonly deployed in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMCJ36CAHM3/I datasheet, SMCJ36CAHM3/I pinout, SMCJ36CAHM3/I application, or SMCJ36CAHM3/I equivalent, this part delivers AEC-Q101 qualified surge immunity with halogen-free, RoHS-compliant construction - critical for automotive-grade ECU front-end protection, CAN bus line conditioning, and high-reliability industrial I/O modules.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) specified at 40.0–44.2 V (min/max) under 1 mA test current. Its low incremental surge resistance enables rapid clamping response (<1 ps typical), while thermal resistance (RθJA = 75 °C/W) supports operation up to 150 °C junction temperature.
The device meets J-STD-020 MSL Level 1 (260 °C peak reflow), uses glass-passivated junction technology, and exhibits <1.0 µA maximum reverse leakage at VWM. Its DO-214AB package provides mechanical robustness and compatibility with automated SMT placement on standard PCB copper pad layouts (8.0 mm × 8.0 mm per terminal).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC rail margin for 36 V systems. |
| VBR (min/max) | 40.0 V / 44.2 V - Breakdown occurs within this range at 1 mA; ensures predictable turn-on threshold across temperature and unit variation. |
| VC @ IPPM | 58.1 V - Clamped voltage during 10/1000 µs 25.8 A surge; limits downstream IC stress to ≤58.1 V under worst-case transients. |
| PPPM | 1500 W - Peak pulse power handling capability; sustains high-energy lightning-induced surges without failure. |
| IPPM | 25.8 A - Peak surge current supported at rated waveform; validates protection level against ISO 7637-2 Pulse 5a/b and IEC 61000-4-5 Level 4. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments and sealed industrial enclosures. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with IPC-7351B standard land patterns. |
Pinout & Package
SMCJ36CAHM3/I is a two-terminal bidirectional TVS diode in SMC (DO-214AB) package. No polarity marking is applied; terminals are symmetrical and interchangeable. The device mounts with cathode/anode leads soldered to PCB pads per JEDEC MS-013AC outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no fixed polarity assignment required in layout. |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; forms symmetrical clamping path across protected line and ground or differential pair. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS power domains. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC J-STD-20E; supports green manufacturing and end-of-life compliance. |
| MSL Level 1 rating | Withstands 260 °C peak reflow profile without popcorn effect or delamination; eliminates pre-bake requirements. |
| Glass-passivated junction | Enhances long-term reliability and moisture resistance versus epoxy-passivated alternatives; improves surge lifetime. |
| Low clamping ratio (VC/VBR) | 1.45 (58.1 V / 40.0 V) - Minimizes overvoltage overshoot during fast transients, reducing risk of MOSFET gate oxide damage. |
Applications
| Automotive Power Input Protection | CAN Bus Transient Suppression |
|---|---|
|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator ripple transients per ISO 16750-2. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between power rail and chassis ground, absorbing >100 V spikes within nanoseconds. Use Value: Limits rail voltage to ≤58.1 V during 1500 W surges, preventing damage to downstream PMICs, microcontrollers, and analog front-ends. |
Use Scenario: Shielding high-speed CAN FD transceivers from ESD (IEC 61000-4-2 ±15 kV) and coupled noise on vehicle wiring harnesses. IC Role / Device Role / Timing Role: Low-capacitance (typ. <50 pF) shunt protector across CANH–CANL differential pair, maintaining signal integrity up to 5 Mbps. Use Value: Clamps common-mode surges without distorting edge rates, preserving bit error rate (BER) and enabling fail-safe bus recovery. |
| Industrial Sensor Signal Line Guarding | DC-DC Converter Input Stage Protection |
|
Use Scenario: Safeguarding 4–20 mA or 0–10 V analog outputs of pressure/temperature sensors exposed to field wiring in factory automation. IC Role / Device Role / Timing Role: Bidirectional TVS connected between signal line and local ground, diverting induced surges from lightning or relay switching. Use Value: Maintains sub-µA leakage (<1.0 µA at 36 V), avoiding measurement drift while suppressing >1 kV transients per IEC 61000-4-4. |
Use Scenario: Front-end protection of isolated 36 V input DC-DC converters used in telecom power supplies and PoE injectors. IC Role / Device Role / Timing Role: Primary surge limiter placed upstream of input filter and rectifier, absorbing energy before it reaches switching FETs. Use Value: Withstands repeated 1500 W pulses without parameter shift, extending converter MTBF in harsh electromagnetic environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36CAHE3/A | Same VWM (36 V) and VC (58.1 V), but lower PPPM = 400 W in SMA package; RθJA = 110 °C/W. | Not suitable for ISO 7637-2 Pulse 5 or IEC 61000-4-5 Level 4; limited to low-energy consumer electronics. | Select when board space is constrained and surge energy is ≤400 W; verify thermal derating at elevated ambient temperatures. |
| SMCJ36CA-E3/57T | Identical electrical specs and SMC package, but commercial-grade (non-AEC-Q101) and RoHS-compliant only (not halogen-free). | Lacks automotive qualification; not approved for under-hood or safety-critical ECU use per OEM requirements. | Choose for cost-sensitive industrial or computing applications where AEC-Q101 and halogen-free status are not mandated. |
Compared with SMAJ36CAHE3/A and SMCJ36CA-E3/57T, the SMCJ36CAHM3/I uniquely combines 1500 W surge capacity, AEC-Q101 qualification, and halogen-free construction - making it the only option qualified for high-energy automotive front-end protection without compromising environmental compliance.
Availability
SMCJ36CAHM3/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and CAN FD communication modules requiring stable component supply across extended product lifecycles.
Supply support for SMCJ36CAHM3/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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The SMCJ series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power transient suppression in harsh environments - emphasizing clamping precision, surge endurance, and qualification-grade consistency.
FAQ
What is the clamping voltage of SMCJ36CAHM3/I at its rated peak pulse current?
The SMCJ36CAHM3/I has a maximum clamping voltage (VC) of 58.1 V when subjected to its rated 10/1000 µs peak pulse current of 25.8 A. This value is measured under standardized surge conditions and guarantees that downstream circuitry remains protected below 58.1 V during transient events. The clamping performance is consistent across the full operating temperature range of −55 °C to +150 °C, as verified in Vishay's characterization data for the SMCJ36CAHM3/I.
Is SMCJ36CAHM3/I suitable for automotive applications?
Yes, the SMCJ36CAHM3/I is AEC-Q101 qualified and explicitly designated for automotive use via its HM3 suffix (halogen-free, RoHS-compliant, and AEC-Q101 qualified). It meets stringent requirements for under-hood and chassis-mounted electronics, including resistance to thermal cycling, mechanical shock, and high-energy transients defined in ISO 7637-2 and ISO 16750-2. The SMCJ36CAHM3/I is routinely deployed in engine control modules, body control units, and ADAS power domains.
How does the bidirectional configuration of SMCJ36CAHM3/I affect its circuit implementation?
The SMCJ36CAHM3/I is inherently bidirectional, meaning it clamps voltage surges of either polarity symmetrically between its two terminals - no cathode marking is present, and orientation during PCB placement is irrelevant. This simplifies layout for AC-coupled lines, differential buses (e.g., CAN, RS-485), or ungrounded DC rails. Unlike unidirectional TVS diodes, the SMCJ36CAHM3/I requires no reference to system ground for functionality and provides equal protection on both sides of the protected node.
What is the thermal resistance of SMCJ36CAHM3/I, and how does it impact PCB layout?
The SMCJ36CAHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal, per Vishay's recommended layout. To maintain safe junction temperatures under sustained surge duty cycles or elevated ambient conditions, designers must adhere to this pad size and ensure adequate copper area and thermal vias. Reducing pad size increases RθJA, risking thermal runaway during repetitive transients - a key consideration for SMCJ36CAHM3/I deployment in high-reliability systems.
Does SMCJ36CAHM3/I meet lead-free assembly standards?
Yes, the SMCJ36CAHM3/I is fully compatible with lead-free reflow processes: it is rated for MSL Level 1 per J-STD-020 and withstands a maximum peak temperature of 260 °C. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards, and it passes JESD 201 Class 2 whisker testing. These attributes ensure reliable solder joint formation and long-term interconnect integrity in modern RoHS-compliant manufacturing lines using the SMCJ36CAHM3/I.
SMCJ36CAHM3/I 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:
- -
- Bidirectional Channels:
- 1
- 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)
SMCJ36CAHM3/I FAQ
1.How can I place an order for SMCJ36CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ36CAHM3/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 SMCJ36CAHM3/I reliable?
The price and inventory of SMCJ36CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ36CAHM3/I is usually 5 days.
3.What payment methods are accepted for SMCJ36CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ36CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ36CAHM3/I?
SMCJ36CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ36CAHM3/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 SMCJ36CAHM3/I?
For technical support, including SMCJ36CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ36CAHM3/I requirements.
6.How does Aetrix verify that SMCJ36CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SMCJ36CAHM3/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 SMCJ36CAHM3/I meets industry standards.
7.What is the process for return or replacement of SMCJ36CAHM3/I?
All SMCJ36CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ36CAHM3/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 SMCJ36CAHM3/I part is unused and in its original packaging.
Return procedure for SMCJ36CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ36CAHM3/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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