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Vishay General Semiconductor - Diodes Division SMB8J36CHE3/52
- Part No.:
- SMB8J36CHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J36CHE3/52.pdf
- Description:
- TVS DIODE 36VWM 64.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,176
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Product details
Overview
SMB8J36CHE3/52 from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy surge protection on signal and power lines. It features 36 V stand-off voltage (VWM), 58.1 V maximum clamping voltage (VC) at 13.8 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMB8J36CHE3/52 datasheet, SMB8J36CHE3/52 pinout, SMB8J36CHE3/52 application, or SMB8J36CHE3/52 equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, RoHS-compliant HE3 suffix, and thermal resistance (RθJA = 72 °C/W) under PCB pad-limited dissipation conditions.
Technical Context
This bi-directional TVS diode operates symmetrically across both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while the 150 °C max junction temperature supports operation in under-hood automotive environments.
The device delivers 800 W peak pulse power handling per 10/1000 µs waveform when mounted on 5.0 mm × 5.0 mm copper pads, with clamping performance validated at 13.8 A IPPM. Its 72 °C/W junction-to-ambient thermal resistance reflects standard SMB package thermal limitations under typical surface-mount layout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe signal swing range for protected line. |
| VBR (min/max) | 40.0 V / 44.2 V - Breakdown voltage range at 1.0 mA test current; ensures reliable turn-on above normal operating voltage. |
| VC @ IPPM | 58.1 V - Clamping voltage at 13.8 A peak pulse current; determines maximum voltage stress imposed on downstream ICs during surge. |
| PPPM | 800 W - Peak pulse power rating with 10/1000 µs waveform; quantifies single-event surge energy absorption capacity. |
| ID @ VWM | <1.0 µA - Reverse leakage current at 36 V; ensures minimal signal loading and power loss in standby state. |
| TJ max. | 150 °C - Maximum junction temperature; enables use in AEC-Q101-qualified automotive applications including engine control modules. |
| RθJA | 72 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs thermal design margin under sustained power dissipation. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, bi-directional configuration with no polarity marking - symmetrical terminals suitable for AC or differential line protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional surge conduction path | No functional distinction between terminals; either terminal serves as anode or cathode depending on transient polarity - eliminates orientation concerns during placement. |
| Cathode Band (absent) | Polarity indicator | Not present on bi-directional variants; confirms non-polarized construction and simplifies PCB layout verification. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock - required for engine bay and ADAS sensor protection. |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to moisture-induced parameter drift - critical for long-term field reliability in harsh environments. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning - supports automated SMT assembly without moisture sensitivity risk. |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance and UL 94 V-0 flammability - satisfies automotive OEM material compliance requirements. |
| Low incremental surge resistance | Enables tighter clamping (VC/VBR ratio = 1.45) versus competing TVS devices - reduces voltage overshoot seen by protected ICs during fast transients. |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching spikes in vehicle ECUs. IC Role / Device Role: Bi-directional clamping element placed directly at connector entry point to shunt surge energy before reaching signal conditioning circuitry. Use Value: Withstands 800 W surges while limiting clamped voltage to 58.1 V - maintains integrity of 3.3 V/5 V microcontrollers and ADC front-ends under ISO 7637-2 Pulse 5a conditions. |
Use Scenario: Safeguarding PLC digital input channels against ESD and relay coil flyback in factory automation systems. IC Role / Device Role: Primary overvoltage clamp on 24 V DC input lines, installed upstream of optocoupler or Schmitt trigger interface. Use Value: 36 V VWM aligns with 24 V nominal supply with 50 % margin; 13.8 A IPPM handles 1000 V/100 Ω surge generator waveforms per IEC 61000-4-5. |
| Telecom Line Interface | Consumer USB Port Protection |
Use Scenario: Shielding RS-485 transceiver pins in base station backhaul equipment from lightning-induced surges on twisted-pair cabling. IC Role / Device Role: Differential-mode TVS pair (two SMB8J36CHE3/52 devices) across A/B lines to suppress common-mode and differential transients. Use Value: Symmetrical bi-directional response ensures equal clamping in both signal polarities - preserves data integrity during bidirectional half-duplex communication. |
Use Scenario: Adding secondary surge protection on VBUS and D+/D− lines of USB 2.0 ports in smart home hubs exposed to user-accessible connectors. IC Role / Device Role: Secondary clamp after primary polymer PTC, absorbing residual energy that bypasses primary protection. Use Value: 58.1 V VC prevents damage to 5.5 V-rated USB switch ICs during contact discharge events; HE3 suffix ensures lead-free assembly compatibility. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA-E3/52 | Same DO-214AA package and 36 V VWM, but rated for 600 W PPPM (vs. 800 W) and 10.5 A IPPM (vs. 13.8 A); not AEC-Q101 qualified. | Limited to commercial-grade industrial or consumer applications where automotive qualification is unnecessary. | Select when cost sensitivity outweighs need for AEC-Q101 validation and higher surge margin. |
| SMCJ36CAHE3/52 | DO-214AB (SMC) package with identical 36 V VWM and 800 W PPPM, but larger footprint (7.11 mm × 6.22 mm vs. 4.57 mm × 3.94 mm) and lower RθJA (30 °C/W). | Better thermal performance in high-duty-cycle surge environments, but requires PCB real estate increase and layout revision. | Choose when sustained surge repetition or elevated ambient temperatures demand improved thermal dissipation. |
Compared with SMBJ36CA-E3/52, SMB8J36CHE3/52 provides higher surge robustness and automotive qualification; compared with SMCJ36CAHE3/52, it offers space-constrained mounting at the expense of thermal headroom - making it optimal for compact AEC-Q101-compliant designs.
Availability
SMB8J36CHE3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O hardening, and telecom line interface applications requiring stable component supply, AEC-Q101 compliance, and RoHS/lead-free manufacturing readiness.
Supply support for SMB8J36CHE3/52 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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMB8J series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-power-density, AEC-Q101-qualified transient suppression in automotive and industrial environments where space, thermal, and qualification constraints are critical.
FAQ
What is the clamping voltage of SMB8J36CHE3/52 at its rated peak pulse current?
The SMB8J36CHE3/52 has a maximum clamping voltage (VC) of 58.1 V at 13.8 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per ANSI/IEEE C62.35 standards and defines the upper voltage limit imposed on protected circuitry during surge events - a critical parameter for ensuring downstream IC survival in automotive and industrial applications.
Is SMB8J36CHE3/52 suitable for automotive applications?
Yes, SMB8J36CHE3/52 is AEC-Q101 qualified and carries the HE3 suffix indicating RoHS compliance and JESD 201 Class 2 whisker resistance. Its 150 °C maximum junction temperature, glass-passivated junction, and validated performance under temperature cycling and humidity bias make SMB8J36CHE3/52 appropriate for engine control units, ADAS sensors, and body electronics where automotive-grade reliability is mandatory.
How does the bi-directional configuration of SMB8J36CHE3/52 affect PCB layout?
The bi-directional configuration of SMB8J36CHE3/52 eliminates polarity marking and allows symmetrical placement on AC-coupled or differential lines - no cathode band means either terminal connects freely to line or return. This simplifies layout, avoids orientation errors during automated placement, and supports dual-line protection schemes such as RS-485 A/B clamping without directional constraints.
What is the thermal resistance of SMB8J36CHE3/52, and how does it impact power handling?
SMB8J36CHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads. This limits sustained power dissipation to ~1.4 W at 100 °C ambient rise, confirming its design intent for transient-only energy absorption - not continuous power regulation - which aligns with its 800 W peak pulse rating and 100 W peak power dissipation (PD) specification.
What does the "HE3/52" suffix indicate in SMB8J36CHE3/52?
The "HE3" suffix in SMB8J36CHE3/52 denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance; "52" specifies packaging in 7" diameter plastic tape and reel with 750 units per reel. This full suffix confirms compliance with automotive material requirements and ensures compatibility with standard SMT pick-and-place equipment using industry-standard reel dimensions and quantities.
SMB8J36CHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 64.3V
- Current - Peak Pulse (10/1000µs):
- 12.4A
- Power - Peak Pulse:
- 800W
- 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 (SMB)
SMB8J36CHE3/52 FAQ
1.How can I place an order for SMB8J36CHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J36CHE3/52 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 SMB8J36CHE3/52 reliable?
The price and inventory of SMB8J36CHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J36CHE3/52 is usually 5 days.
3.What payment methods are accepted for SMB8J36CHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J36CHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J36CHE3/52?
SMB8J36CHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J36CHE3/52 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 SMB8J36CHE3/52?
For technical support, including SMB8J36CHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J36CHE3/52 requirements.
6.How does Aetrix verify that SMB8J36CHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMB8J36CHE3/52 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 SMB8J36CHE3/52 meets industry standards.
7.What is the process for return or replacement of SMB8J36CHE3/52?
All SMB8J36CHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J36CHE3/52, 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 SMB8J36CHE3/52 part is unused and in its original packaging.
Return procedure for SMB8J36CHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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