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Vishay General Semiconductor - Diodes Division SMBJ36CAHE3_A/I
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- Part No.:
- SMBJ36CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ36CAHE3_A/I.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,955
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Product details
Overview
SMBJ36CAHE3_A/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 a 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 - deployed in industrial sensor interfaces and automotive ECUs.
For engineers reviewing the SMBJ36CAHE3_A/I datasheet, SMBJ36CAHE3_A/I pinout, SMBJ36CAHE3_A/I application, or SMBJ36CAHE3_A/I equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance data, clamping performance under surge conditions, and real-world protection use cases for bidirectional DC bus and communication line hardening.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling transient suppression without polarity sensitivity on AC-coupled or floating lines. Its glass-passivated junction ensures stable VBR tolerance (±5%), low leakage (<1.0 µA at VWM), and fast response time (<1.0 ns), critical for protecting MOSFET gates and microcontroller I/O against ESD and inductive switching spikes.
Thermal design is supported by RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), with operation rated from –55 °C to +150 °C junction temperature. The device meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101, confirming suitability for automotive under-hood and infotainment applications requiring high-reliability surge immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for 36 V nominal systems. |
| 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 during 600 W 10/1000 µs surge; limits stress on downstream ICs to safe levels. |
| PPPM | 600 W - Peak pulse power handling capability; supports robust protection against lightning-induced surges and load dump transients. |
| IPPM | 10.3 A - Peak pulse current capacity with 10/1000 µs waveform; directly correlates to energy absorption (E ≈ 600 W × 1 ms ≈ 0.6 J). |
| TJ max. | +150 °C - Maximum junction temperature; enables reliable operation in high-ambient environments like engine control modules. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking; matte tin-plated leads, RoHS-compliant and halogen-free (HE3 suffix), MSL Level 1, 260 °C reflow compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Accepts reverse surge current during negative half-cycle; symmetrical with cathode for bidirectional clamping. |
| Cathode | Transient current entry (positive polarity) | Accepts forward surge current during positive half-cycle; identical clamping behavior to anode due to bidirectional structure. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines or floating buses without external polarity management or dual-diode arrangements. |
| 600 W peak pulse power | Handles high-energy transients such as ISO 7637-2 Pulse 5a (load dump) up to 60 V, supporting automotive 24 V system compliance. |
| AEC-Q101 qualification | Validates long-term reliability under automotive thermal, mechanical, and electrical stress profiles - required for Tier 1 ECU designs. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot during clamping, reducing risk of latch-up or gate oxide damage in protected MOSFETs and logic ICs. |
| MSL Level 1 moisture sensitivity | Eliminates bake requirements prior to reflow assembly, streamlining SMT manufacturing for high-volume automotive and industrial PCBs. |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Lines |
|---|---|
|
Use Scenario: Protection of 24 V supply rails in body control modules against load dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed upstream of DC-DC converters and LDOs to limit input voltage excursion. Use Value: Maintains VIN ≤ 58.1 V during 600 W surges, preventing converter shutdown or internal FET avalanche failure. |
Use Scenario: Shielding analog outputs (e.g., 4–20 mA current loops) in pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS shunting transients between signal and ground, preserving signal integrity below 100 pF. Use Value: Sub-1 ns response prevents >36 V spikes from reaching precision ADC front-ends, avoiding measurement corruption or reset. |
| Telecom Interface Ports | Consumer USB Power Delivery |
|
Use Scenario: Surge protection on RS-485 transceiver bus lines exposed to field wiring in building automation systems. IC Role / Device Role / Timing Role: Common-mode clamp across differential pair, referenced to local ground to suppress common-mode transients. Use Value: Symmetrical 36 V standoff and 58.1 V clamping ensure balanced protection without skewing differential signaling thresholds. |
Use Scenario: Input-side transient suppression on USB-C PD port VBUS lines subjected to hot-plug and cable coupling noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp before buck controller, sized to absorb 600 W pulses without thermal runaway. Use Value: AEC-Q101 qualification and 150 °C TJ rating support sustained operation in thermally constrained portable charger enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CAHM3_A/I | Halogen-free variant with identical electrical specs and AEC-Q101 qualification; same SMB package and thermal performance. | No functional difference; selected when halogen-free compliance is mandated by OEM environmental policy (e.g., VW 80101). | Direct material substitution where halogen content restrictions apply; no layout or validation changes needed. |
| SMCJ36CAHE3_A/I | Same VWM, VBR, and VC, but in larger SMC (DO-214AB) package with 1500 W PPPM and lower RθJA (50 °C/W). | Used where higher surge energy (e.g., ISO 16750-2 Class IV) or improved thermal dissipation is required in space-tolerant designs. | Choose when system-level surge test requirements exceed 600 W or board layout allows larger footprint for enhanced margin. |
Compared with SMBJ36CAHE3_A/I, the HM3 variant offers identical protection performance with halogen-free construction, while the SMCJ36CAHE3_A/I provides 2.5× higher pulse power and better thermal management at the cost of increased PCB area - enabling scalable surge resilience across product tiers.
Availability
SMBJ36CAHE3_A/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom interface protection, and consumer USB-C power delivery systems requiring stable component supply with AEC-Q101 assurance and full traceability.
Supply support for SMBJ36CAHE3_A/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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-speed transient suppression in automotive, industrial, and communications infrastructure - delivering consistent clamping performance, AEC-Q101 validation, and robust package reliability in surface-mount form.
FAQ
What is the clamping voltage of SMBJ36CAHE3_A/I at its rated peak pulse current?
The SMBJ36CAHE3_A/I has a maximum clamping voltage (VC) of 58.1 V at 10.3 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 09-Jan-2024. The SMBJ36CAHE3_A/I maintains this clamping performance across its full operating temperature range (–55 °C to +150 °C), making it suitable for harsh-environment applications where voltage overshoot must be tightly bounded.
Is SMBJ36CAHE3_A/I suitable for automotive applications?
Yes, SMBJ36CAHE3_A/I is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet under "Mechanical Data" and "Ordering Information." It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 Rev G. The SMBJ36CAHE3_A/I is commonly used in automotive body control modules, infotainment power supplies, and ADAS sensor interfaces where bidirectional transient immunity and extended temperature operation are mandatory.
How does the bidirectional configuration of SMBJ36CAHE3_A/I affect circuit placement?
The SMBJ36CAHE3_A/I has no polarity marking and functions identically in both directions, allowing placement across any two nodes requiring symmetrical overvoltage protection - such as differential signal pairs, AC-coupled lines, or floating power domains. Unlike unidirectional TVS diodes, the SMBJ36CAHE3_A/I eliminates orientation errors during automated placement and avoids the need for dual-diode back-to-back configurations, simplifying layout and reducing BOM count.
What is the thermal resistance of SMBJ36CAHE3_A/I, and how does it impact PCB layout?
The SMBJ36CAHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W, measured on 0.2" × 0.2" copper pads per terminal. To maintain safe junction temperatures under repeated surges, PCB layout must provide minimum recommended pad area (per Vishay outline drawing) and avoid excessive trace length or narrow traces that increase thermal impedance. The SMBJ36CAHE3_A/I's MSL Level 1 rating confirms compatibility with standard lead-free reflow without pre-bake.
Can SMBJ36CAHE3_A/I replace SMBJ36AHE3_A/I in a design?
No - SMBJ36CAHE3_A/I is bidirectional, while SMBJ36AHE3_A/I is unidirectional and includes a cathode band for polarity identification. Substituting them requires verifying circuit topology: the unidirectional part only clamps positive transients relative to cathode, whereas the SMBJ36CAHE3_A/I clamps both polarities equally. Using SMBJ36CAHE3_A/I in place of SMBJ36AHE3_A/I may be acceptable in floating or AC-coupled paths, but not in DC-biased unidirectional rails where reverse conduction could cause malfunction.
SMBJ36CAHE3_A/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:
- Obsolete
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ36CAHE3_A/I FAQ
1.How can I place an order for SMBJ36CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ36CAHE3_A/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 SMBJ36CAHE3_A/I reliable?
The price and inventory of SMBJ36CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ36CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ36CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ36CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ36CAHE3_A/I?
SMBJ36CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ36CAHE3_A/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 SMBJ36CAHE3_A/I?
For technical support, including SMBJ36CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ36CAHE3_A/I requirements.
6.How does Aetrix verify that SMBJ36CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ36CAHE3_A/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 SMBJ36CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ36CAHE3_A/I?
All SMBJ36CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ36CAHE3_A/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 SMBJ36CAHE3_A/I part is unused and in its original packaging.
Return procedure for SMBJ36CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ36CAHE3_A/I Tags
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