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Vishay General Semiconductor - Diodes Division SMBJ36CAHM3/I
- Part No.:
- SMBJ36CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ36CAHM3/I.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,041
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Product details
Overview
SMBJ36CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features 36 V standoff voltage (VWM), 40.0–44.2 V breakdown voltage (VBR) at 1 mA, 58.1 V maximum clamping voltage (VC) at 10.3 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ36CAHM3/I datasheet, SMBJ36CAHM3/I pinout, SMBJ36CAHM3/I application, or SMBJ36CAHM3/I equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, AEC-Q101 qualification status, halogen-free RoHS compliance, and real-world protection use cases - all critical for automotive-grade surge design, I/O line hardening, and board-level ESD/transient immunity validation.
Technical Context
This device operates as a bidirectional avalanche diode, symmetrically clamping positive and negative transients without polarity dependence. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the 100 °C/W junction-to-ambient thermal resistance supports operation up to +150 °C junction temperature under defined PCB pad conditions.
The SMBJ36CAHM3/I delivers repeatable 600 W transient suppression with <1 ps response time and low incremental surge resistance, enabling robust protection against inductive switching spikes and lightning-induced surges per IEC 61000-4-5. Its M3 suffix confirms halogen-free, RoHS-compliant construction and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working margin. |
| VBR (min/max) | 40.0 V / 44.2 V at 1 mA - Verified breakdown threshold range ensuring consistent turn-on across production lots. |
| VC @ IPPM | 58.1 V at 10.3 A - Clamped voltage during 10/1000 µs surge; determines protected circuit's maximum overvoltage exposure. |
| PPPM | 600 W - Peak pulse power handling capability; defines transient energy absorption capacity per event. |
| IPPM | 10.3 A - Peak surge current supported with 10/1000 µs waveform; sets minimum trace/solder joint robustness requirements. |
| TJ max. | +150 °C - Maximum junction temperature; enables reliable operation in under-hood or enclosed industrial environments. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with automated placement. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Provides symmetrical conduction path for both positive and negative surges; connects to protected line or ground reference. |
| Cathode | Transient return path (bidirectional) | Electrically identical to anode in bidirectional devices; no functional distinction - terminals are interchangeable. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 600 W peak pulse power (10/1000 µs) | Supports high-energy surge events common in 24 V industrial control and automotive power distribution. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control modules and body electronics requiring reliability certification. |
| Halogen-free & RoHS-compliant (M3) | Meets environmental compliance mandates for global OEMs and industrial equipment without compromising thermal performance. |
| MSL Level 1 (260 °C peak reflow) | Allows standard lead-free SMT assembly without moisture sensitivity handling or baking requirements. |
Applications
| Industrial Power Supply Protection | Automotive Sensor Interface Protection |
|---|---|
|
Use Scenario: Suppresses load-dump and jump-start transients on 24 V rail inputs feeding DC-DC converters in PLCs and motor drives. IC Role / Device Role: Bidirectional TVS placed between input rail and chassis ground to clamp ±100 V surges below 60 V. Use Value: Prevents damage to upstream rectifiers and downstream regulators by limiting transient voltage to 58.1 V at 10.3 A. |
Use Scenario: Shields LIN/CAN transceiver I/O pins from ESD and coupled noise in cabin temperature sensors and seat position modules. IC Role / Device Role: Low-capacitance bidirectional clamp on differential signal pair, referenced to local ground. Use Value: Maintains signal integrity under IEC 61000-4-2 ±8 kV contact discharge while adding <0.5 pF parasitic capacitance. |
| Telecom Line Interface Protection | Consumer Appliance Motor Control |
|
Use Scenario: Guards RS-485 transceiver bus lines against lightning-induced surges in outdoor network repeaters and base stations. IC Role / Device Role: Paired SMBJ36CAHM3/I devices on A/B lines with common-mode choke, referenced to isolated ground. Use Value: Withstands IEC 61000-4-5 Level 3 (1 kV line-earth) surges while preserving data rate integrity up to 10 Mbps. |
Use Scenario: Protects gate drivers and microcontroller GPIOs from back-EMF spikes generated by brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role: Mounted across motor terminals and near MCU I/O pins to absorb commutation spikes before propagation. Use Value: Limits induced voltage to ≤58.1 V, preventing latch-up or permanent damage to 3.3 V/5 V logic interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CAHE3/I | Same electrical specs, but RoHS-compliant without halogen-free certification; uses standard SnPb-free matte tin plating. | Lacks JESD201 Class 2 whisker resistance; not approved for long-life automotive deployments. | Select when halogen-free requirement is absent and cost optimization is prioritized over extended automotive qualification. |
| SMCJ36CAHM3/I | Same VWM/VC, but in larger SMC (DO-214AB) package with 1500 W PPPM rating and lower RθJA (60 °C/W). | Requires larger PCB area; suited for higher-energy surge environments where 600 W is insufficient. | Choose when system-level surge testing exceeds IEC 61000-4-5 Level 4 and thermal derating margins are constrained. |
Compared with SMBJ36CAHM3/I, SMBJ36CAHE3/I trades halogen-free assurance for broader commercial availability, while SMCJ36CAHM3/I provides higher surge capacity at the cost of footprint and layout compatibility - making SMBJ36CAHM3/I optimal for space-constrained AEC-Q101 designs needing exact 600 W balance.
Availability
SMBJ36CAHM3/I is available at Aetrix Electronics and suitable for industrial power supply protection, automotive sensor interface hardening, telecom line guarding, and consumer appliance motor control requiring stable component supply and full traceability.
Supply support for SMBJ36CAHM3/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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMBJ series targets board-level transient protection in automotive, industrial, and telecom systems, with HM3 variants engineered specifically for halogen-free, AEC-Q101-compliant deployment in harsh-environment electronics.
FAQ
What is the clamping voltage of SMBJ36CAHM3/I at its rated peak pulse current?
The SMBJ36CAHM3/I has a maximum clamping voltage (VC) of 58.1 V at 10.3 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is measured with the device mounted on 0.2" × 0.2" copper pads per JEDEC standards. The SMBJ36CAHM3/I maintains this clamping performance across its full operating temperature range.
Is SMBJ36CAHM3/I suitable for automotive applications?
Yes, SMBJ36CAHM3/I is AEC-Q101 qualified and carries the HM3 suffix, indicating halogen-free, RoHS-compliant construction validated for automotive use. It meets stress test requirements for temperature cycling, humidity, mechanical shock, and surge robustness required in engine control units, body electronics, and ADAS sensor modules. Its bidirectional architecture supports protection of both power rails and differential communication lines in vehicle networks.
How does the bidirectional nature of SMBJ36CAHM3/I affect its circuit implementation?
The SMBJ36CAHM3/I has no polarity marking and conducts identically in both directions, allowing direct placement across any two nodes requiring symmetrical overvoltage protection - such as AC signal lines, transformer-coupled interfaces, or floating power domains. Unlike unidirectional TVS diodes, it eliminates orientation errors during assembly and avoids the need for dual-device configurations, simplifying layout and reducing BOM count while maintaining full ±58.1 V clamping capability.
What is the thermal resistance specification for SMBJ36CAHM3/I?
The SMBJ36CAHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. Its junction-to-lead resistance (RθJL) is 20 °C/W. These values define thermal derating curves for repetitive surge operation and confirm suitability for ambient temperatures up to +85 °C with appropriate PCB copper area - critical for SMBJ36CAHM3/I deployment in enclosed industrial enclosures.
Does SMBJ36CAHM3/I meet moisture sensitivity level (MSL) requirements for lead-free reflow?
Yes, SMBJ36CAHM3/I meets MSL Level 1 per J-STD-020, with a maximum peak reflow temperature of 260 °C. This allows unlimited floor life and standard lead-free SMT assembly without pre-baking or special handling. The device's molding compound complies with UL 94 V-0 flammability rating, and its matte tin-plated leads conform to J-STD-002 and JESD22-B102 solderability standards - ensuring robust manufacturability for SMBJ36CAHM3/I in high-volume production.
SMBJ36CAHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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):
- 10.3A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
SMBJ36CAHM3/I FAQ
1.How can I place an order for SMBJ36CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ36CAHM3/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 SMBJ36CAHM3/I reliable?
The price and inventory of SMBJ36CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ36CAHM3/I is usually 5 days.
3.What payment methods are accepted for SMBJ36CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ36CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ36CAHM3/I?
SMBJ36CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ36CAHM3/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 SMBJ36CAHM3/I?
For technical support, including SMBJ36CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ36CAHM3/I requirements.
6.How does Aetrix verify that SMBJ36CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ36CAHM3/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 SMBJ36CAHM3/I meets industry standards.
7.What is the process for return or replacement of SMBJ36CAHM3/I?
All SMBJ36CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ36CAHM3/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 SMBJ36CAHM3/I part is unused and in its original packaging.
Return procedure for SMBJ36CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ36CAHM3/I Tags
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Diodes Incorporated
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