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Vishay General Semiconductor - Diodes Division SMBJ36CAHE3/52
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- Part No.:
- SMBJ36CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ36CAHE3/52.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,779
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Product details
Overview
SMBJ36CAHE3/52 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 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 motor drives.
For engineers reviewing the SMBJ36CAHE3/52 datasheet, SMBJ36CAHE3/52 pinout, SMBJ36CAHE3/52 application, or SMBJ36CAHE3/52 equivalent, this device delivers AEC-Q101 qualified surge protection with low incremental surge resistance, fast response time, and MSL Level 1 moisture sensitivity - critical for automotive-grade embedded power rail hardening and telecom interface line protection.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling transient suppression without polarity constraints on AC-coupled or floating lines. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the 150 °C max junction temperature supports operation in high-ambient environments such as under-hood automotive modules and industrial PLC I/O stages.
The device complies with ANSI/IEEE C62.35 for surge protector ratings and meets UL 497B recognition (QVGQ2). Its thermal resistance (RθJA = 100 °C/W) and RθJL = 20 °C/W support reliable power dissipation when mounted on 5.0 mm × 5.0 mm copper pads per terminal - essential for sustaining repetitive 0.01% duty cycle surges in automated factory equipment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 36 V nominal DC rails. |
| 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 48 V tolerant ICs. |
| PPPM | 600 W - Peak pulse power handling capability; sustains lightning-induced or inductive-switching transients per IEC 61000-4-5. |
| IPPM | 10.3 A - Peak pulse current capacity; enables protection of 24–48 V systems against 1 kV/500 A surge coupling. |
| TJ max | +150 °C - Maximum junction temperature; allows deployment in engine control units and industrial inverters without derating. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with standard SMT reflow profiles (260 °C peak). |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration - no polarity marking; symmetrical terminals function as interchangeable anode/cathode pair.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as current entry point during positive or negative transients; no fixed polarity required. |
| Terminal 2 | Anode/Cathode (bidirectional) | Paired terminal completing symmetrical clamping path; enables placement across differential or floating signal lines. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| 600 W peak pulse power (10/1000 µs) | Withstands repeated surge events in industrial automation without degradation, supporting >100,000 surge cycles. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot during clamping - critical for protecting 48 V-rated microcontrollers and gate drivers. |
| MSL Level 1 (260 °C peak) | Enables single-pass lead-free reflow assembly without baking or special handling requirements. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<1 µA) over temperature and lifetime - vital for battery-powered sensors. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Suppresses load-dump and jump-start transients on 36 V battery-fed ECUs in commercial vehicles. IC Role / Device Role / Timing Role: Bidirectional TVS placed across main power input to clamp ±120 V spikes within 1 ns. Use Value: Prevents latch-up or permanent damage to 48 V-tolerant CAN transceivers and MCU power domains. |
Use Scenario: Shields analog outputs of pressure/temperature sensors in factory-floor PLC modules from ESD and inductive kickback. IC Role / Device Role / Timing Role: Mounted directly at connector pins to limit transient energy entering signal conditioning circuitry. Use Value: Maintains sub-1 µA leakage at 36 V, preserving sensor accuracy while surviving 8 kV contact ESD per IEC 61000-4-2. |
| Telecom Line Interface Protection | Motor Drive Gate Driver Protection |
|
Use Scenario: Protects RS-485 transceivers and Ethernet PHYs in outdoor base stations exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional clamping element across differential pairs (A/B lines) referenced to local ground. Use Value: Limits common-mode surge voltage to <60 V, preventing transceiver latch-up and maintaining 10 Mbps data integrity. |
Use Scenario: Safeguards high-side/low-side gate drivers in 48 V BLDC inverters from Miller-induced voltage spikes during switching. IC Role / Device Role / Timing Role: Placed between driver output and MOSFET gate-source to clamp dv/dt-induced overshoot. Use Value: Withstands 10.3 A transient current without degradation, ensuring gate oxide integrity during 100 kHz PWM bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA-M3/52 | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification. | No functional difference; selected where halogen-free material compliance is mandated by OEM spec. | Choose SMBJ36CA-M3/52 when environmental compliance requires halogen-free packaging without performance trade-offs. |
| SMCJ36CAHE3/52 | Same VWM/VBR/VC, but in larger SMC (DO-214AB) package with 1500 W PPPM rating. | Higher surge capacity suits higher-energy environments (e.g., traction inverters), but requires larger PCB area. | Choose SMCJ36CAHE3/52 only when system-level surge testing exceeds 600 W - not a drop-in replacement due to footprint mismatch. |
Compared with SMBJ36CA-M3/52, the SMBJ36CAHE3/52 offers identical protection performance with standard RoHS compliance; versus SMCJ36CAHE3/52, it trades surge margin for space-constrained layouts in compact automotive modules and IoT edge nodes.
Availability
SMBJ36CAHE3/52 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom line cards, and motor drive gate driver circuits requiring stable component supply with AEC-Q101 traceability and full production lifecycle support.
Supply support for SMBJ36CAHE3/52 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, rectifiers, and protection devices for demanding industrial and automotive applications.
The SMBJ series was engineered specifically for robust, surface-mount transient suppression in space-constrained, high-surge environments - emphasizing low clamping voltage, repeatable surge endurance, and automotive-grade qualification.
FAQ
What is the clamping voltage of SMBJ36CAHE3/52 under a 10/1000 µs surge?
The SMBJ36CAHE3/52 clamps to a maximum of 58.1 V at its rated peak pulse current of 10.3 A (10/1000 µs waveform). This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 09-Jan-2024, Document Number 88392. The clamping behavior remains symmetrical in both directions due to its bidirectional construction, making SMBJ36CAHE3/52 suitable for protecting balanced or floating signal paths where polarity cannot be guaranteed.
Is SMBJ36CAHE3/52 qualified for automotive use?
Yes, SMBJ36CAHE3/52 is AEC-Q101 qualified, as indicated by the "HE3" suffix in its part number and confirmed in Vishay's ordering information table and thermal characteristics notes. This qualification covers stress testing for temperature cycling, humidity bias, and mechanical shock - validating SMBJ36CAHE3/52 for under-hood and chassis-mounted applications such as body control modules and ADAS power supplies.
What is the standoff voltage (VWM) and why does it matter for SMBJ36CAHE3/52?
The standoff voltage VWM of SMBJ36CAHE3/52 is 36 V - the maximum continuous reverse voltage the device tolerates without entering breakdown. This parameter defines the upper limit of normal operating voltage on protected lines; exceeding it risks premature conduction and power loss. For SMBJ36CAHE3/52, a 36 V VWM provides optimal margin for 36 V nominal systems (e.g., commercial vehicle batteries), ensuring reliable operation while allowing headroom for ripple and transients below the 40.0 V VBR threshold.
How does the SMBJ36CAHE3/52 package compare to SMCJ variants?
SMBJ36CAHE3/52 uses the SMB (DO-214AA) package - measuring 4.06 mm × 5.59 mm - whereas SMCJ variants use the larger SMC (DO-214AB) package (6.22 mm × 7.11 mm). While both share identical electrical ratings for VWM, VBR, and VC, the SMCJ version supports 1500 W PPPM versus 600 W for SMBJ36CAHE3/52. The smaller footprint of SMBJ36CAHE3/52 makes it preferable for dense PCB layouts in automotive ADAS cameras and compact industrial I/O modules where board space is constrained.
Does SMBJ36CAHE3/52 require polarity-aware PCB layout?
No, SMBJ36CAHE3/52 is a bidirectional TVS diode with no polarity marking on the SMB package, meaning either terminal functions identically as anode or cathode depending on transient polarity. This eliminates orientation constraints during automated placement and simplifies routing across differential lines, AC-coupled interfaces, or floating grounds - a key advantage over unidirectional variants like SMBJ36AHE3/52, which require strict cathode-band alignment.
SMBJ36CAHE3/52 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ36CAHE3/52 FAQ
1.How can I place an order for SMBJ36CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ36CAHE3/52 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 SMBJ36CAHE3/52 reliable?
The price and inventory of SMBJ36CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ36CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ36CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ36CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ36CAHE3/52?
SMBJ36CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ36CAHE3/52 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 SMBJ36CAHE3/52?
For technical support, including SMBJ36CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ36CAHE3/52 requirements.
6.How does Aetrix verify that SMBJ36CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ36CAHE3/52 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 SMBJ36CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ36CAHE3/52?
All SMBJ36CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ36CAHE3/52, 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 SMBJ36CAHE3/52 part is unused and in its original packaging.
Return procedure for SMBJ36CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ36CAHE3/52 Tags
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