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Vishay General Semiconductor - Diodes Division SMBJ36CAHM3/H
- Part No.:
- SMBJ36CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ36CAHM3/H.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,611
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Product details
Overview
SMBJ36CAHM3/H 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 signal or power 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 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/H datasheet, SMBJ36CAHM3/H pinout, SMBJ36CAHM3/H application, or SMBJ36CAHM3/H equivalent, key selection criteria include bidirectional surge suppression capability, low clamping ratio (VC/VWM = 1.62), AEC-Q101 qualification status, halogen-free RoHS compliance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamping protection device across bidirectional signal or DC bus lines, responding within <1 ps to ESD and lightning-induced transients. Its glass-passivated junction ensures stable breakdown behavior under repetitive surges, while the low incremental surge resistance (Rdyn ≈ 2.7 Ω derived from ΔVC/ΔIPPM) supports effective energy diversion without thermal runaway.
The SMBJ36CAHM3/H is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance RθJA = 100 °C/W (on recommended pad layout) and RθJL = 20 °C/W, enabling reliable operation in high-temperature industrial environments when mounted per J-STD-020 MSL level 1 reflow profile (peak 260 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR min/max | 40.0 V / 44.2 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 58.1 V at 10.3 A - Clamped voltage under 600 W 10/1000 µs surge; limits stress on downstream components. |
| PPPM | 600 W - Peak pulse power handling with 0.01 % duty cycle; suitable for infrequent but high-energy transients. |
| IPPM | 10.3 A - Peak surge current supported with standard waveform; determines minimum trace width and PCB copper area needed. |
| TJ max | +150 °C - Maximum junction temperature; enables use in enclosed enclosures or near heat sources without derating. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with JEDEC-compliant pick-and-place. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (reverse bias) | One terminal of symmetrical PN junction; conducts during positive or negative overvoltage relative to cathode. |
| Cathode | Transient current entry (forward bias) | Second terminal of symmetrical PN junction; forms bidirectional clamping path with anode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating differential lines without polarity concerns. |
| 600 W peak pulse power | Handles IEC 61000-4-5 Level 4 surge (4 kV line-earth) when properly laid out on 5 mm × 5 mm copper pads. |
| AEC-Q101 qualified | Validated for automotive subsystems including body control modules and infotainment power rails where reliability is critical. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declarations; supports green manufacturing requirements. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; reduces production handling overhead. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate driver inputs against inductive kickback from 24 V solenoid switching. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across MOSFET gate-source terminals to limit dv/dt and prevent latch-up. Use Value: Limits gate voltage excursion to ≤58.1 V during 10.3 A transients, preserving SiC MOSFET integrity without adding RC snubbers. | Use Scenario: Surge suppression on LIN bus lines exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Primary transient protector on bidirectional serial communication line between door module and BCM. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 5a (75 V/300 ms) by clamping within 1 ps and surviving >1000 surges. |
| Telecom Power Feeds | Consumer Sensor Interfaces |
Use Scenario: Input-stage protection for 48 V PoE-powered remote radio units subjected to lightning-induced surges. IC Role / Device Role / Timing Role: First-line TVS on DC input rail upstream of DC/DC converter, configured in parallel with bulk capacitance. Use Value: Absorbs 600 W pulses without degradation, reducing need for secondary crowbar circuits and lowering BOM count. | Use Scenario: ESD safeguard for I²C lines connecting ambient light and proximity sensors to MCU in smart home hubs. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF at 0 V) bidirectional clamp on data/signal pairs to prevent latch-up during HBM ±8 kV events. Use Value: Adds <0.5 ns propagation delay and zero signal distortion while meeting IEC 61000-4-2 Level 4 immunity. |
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/H | Same electrical specs; RoHS-compliant but not halogen-free; uses standard tin plating instead of matte tin. | Approved for commercial-grade industrial equipment but not automotive AEC-Q101 systems. | Select when halogen-free requirement is waived and cost optimization is prioritized. |
| SMCJ36CAHM3 | Same VWM/VC ratings but in larger SMC (DO-214AB) package; 1500 W PPPM, higher IPPM (23.5 A). | Used where higher surge margin is required, e.g., outdoor telecom cabinets with direct lightning exposure. | Select when board space allows larger footprint and system-level surge testing exceeds IEC 61000-4-5 Level 4. |
Compared with SMBJ36CAHM3/H, SMBJ36CAHE3/H offers identical clamping performance at lower material cost but lacks halogen-free certification, while SMCJ36CAHM3 provides 2.5× higher surge capacity in a less compact package - making SMBJ36CAHM3/H optimal for space-constrained, automotive-qualified, and environmentally regulated designs.
Availability
SMBJ36CAHM3/H is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power feeds, and consumer sensor interfaces requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ36CAHM3/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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The SMBJ series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure due to voltage surges must be eliminated through proven clamping performance and AEC-Q101 qualification.
FAQ
What does the "CA" suffix indicate in SMBJ36CAHM3/H?
The "CA" suffix in SMBJ36CAHM3/H denotes a bidirectional configuration, meaning the device functions identically in both polarities - essential for protecting AC-coupled signals, differential buses, or floating power domains without regard to voltage polarity. This differs from unidirectional variants (e.g., SMBJ36AHM3/H) that only clamp in reverse bias and conduct forward current.
Is SMBJ36CAHM3/H qualified for automotive applications?
Yes, SMBJ36CAHM3/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code structure ("HM3" suffix with "_H" reel packaging denotes halogen-free, RoHS-compliant, and AEC-Q101-qualified version). It is approved for use in automotive body electronics, infotainment power rails, and sensor interfaces where reliability under temperature cycling and mechanical shock is mandatory.
What is the maximum clamping voltage of SMBJ36CAHM3/H and how is it measured?
The maximum clamping voltage of SMBJ36CAHM3/H is 58.1 V, measured at 10.3 A peak pulse current using the standardized 10/1000 µs double-exponential waveform per ANSI/IEEE C62.35. This value represents the upper limit of voltage seen by protected circuitry during worst-case surge events and is guaranteed across the full operating temperature range (-55 °C to +150 °C).
How does the SMB (DO-214AA) package of SMBJ36CAHM3/H affect PCB layout?
The SMB (DO-214AA) package of SMBJ36CAHM3/H requires a minimum 5.0 mm × 5.0 mm copper pad area per terminal to achieve rated 600 W pulse power dissipation. Layout must avoid thermal isolation - pads should connect to internal ground/power planes via ≥2 thermal vias each - and maintain ≥0.2 mm clearance to adjacent traces to prevent arcing during clamping events.
Does SMBJ36CAHM3/H meet any international safety or flammability standards?
Yes, SMBJ36CAHM3/H meets UL 497B recognition (file E136766) for surge protective devices and its molding compound complies with UL 94 V-0 flammability rating. These certifications validate its suitability for use in end-equipment requiring safety agency approval, including industrial PLCs, medical auxiliary power supplies, and Class I telecom infrastructure.
SMBJ36CAHM3/H 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/H FAQ
1.How can I place an order for SMBJ36CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ36CAHM3/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 SMBJ36CAHM3/H reliable?
The price and inventory of SMBJ36CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ36CAHM3/H is usually 5 days.
3.What payment methods are accepted for SMBJ36CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ36CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ36CAHM3/H?
SMBJ36CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ36CAHM3/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 SMBJ36CAHM3/H?
For technical support, including SMBJ36CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ36CAHM3/H requirements.
6.How does Aetrix verify that SMBJ36CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ36CAHM3/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 SMBJ36CAHM3/H meets industry standards.
7.What is the process for return or replacement of SMBJ36CAHM3/H?
All SMBJ36CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ36CAHM3/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 SMBJ36CAHM3/H part is unused and in its original packaging.
Return procedure for SMBJ36CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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