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Vishay General Semiconductor - Diodes Division SMB8J36CAHE3_A/I
- Part No.:
- SMB8J36CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J36CAHE3_A/I.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,125
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Product details
Overview
SMB8J36CAHE3_A/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on signal and 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 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 SMB8J36CAHE3_A/I datasheet, SMB8J36CAHE3_A/I pinout, SMB8J36CAHE3_A/I application, or SMB8J36CAHE3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 1.0 μA max reverse leakage at VWM, MSL Level 1 compliance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped crowbar during transients, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response time and low incremental surge resistance. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints.
The SMB8J36CAHE3_A/I is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance of 72 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), supporting reliable operation under repeated surge stress when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal swing range. |
| VBR min/max | 40.0 V / 44.2 V at 1.0 mA - Ensures consistent breakdown initiation across production lots and temperature. |
| VC @ IPPM | 58.1 V at 13.8 A - Clamping voltage limits downstream IC stress during 10/1000 μs surge events. |
| PPPM | 800 W - Peak power dissipation capability with standard 10/1000 μs waveform; validates robustness against lightning-induced surges. |
| ID @ VWM | 1.0 μA - Ultra-low leakage preserves signal integrity and battery life in always-on sensor circuits. |
| TJ max | +150 °C - Enables use in under-hood automotive environments and thermally constrained industrial enclosures. |
| Qualification | AEC-Q101 qualified - Certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant and halogen-free (HE3 suffix), MSL Level 1 (260 °C reflow peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Band End) | Anode/Cathode terminal pair | Bidirectional device - no polarity marking; terminals are symmetrical and interchangeable in circuit layout. |
| Anode (Opposite Band) | Anode/Cathode terminal pair | Identical electrical behavior in both directions; supports AC line or differential bus protection without orientation dependency. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and ADAS sensor interfaces. |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to moisture-induced parameter drift in humid environments. |
| Low profile SMB package | Enables high-density PCB layouts and compatibility with standard 0.2" × 0.2" (5.0 mm × 5.0 mm) thermal pads for optimal heat dissipation. |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing without baking - reduces manufacturing overhead. |
| 800 W peak pulse power | Provides margin against IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges on industrial fieldbus lines. |
Applications
| Automotive Sensor Protection | Industrial Fieldbus Interface |
|---|---|
|
Use Scenario: Protecting CAN FD and LIN transceivers from load dump and inductive switching transients in vehicle body control modules. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across differential bus lines (CAN_H/CAN_L) or supply rails (VCC/GND) to limit transient overvoltage. Use Value: Maintains signal integrity below 58.1 V clamping threshold during 13.8 A surges, preventing transceiver latch-up or permanent damage. |
Use Scenario: Safeguarding RS-485 transceivers and PLC analog input channels against EFT and surge events in factory automation systems. IC Role / Device Role / Timing Role: Parallel-connected TVS on data lines and power rails to shunt energy before it reaches protected ICs. Use Value: Withstands repeated 800 W pulses without degradation, enabling long-term reliability in unattended industrial deployments. |
| Consumer Power Adapter Input | Medical Sensor Signal Conditioning |
|
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters subjected to mains-borne surges and capacitor discharge transients. IC Role / Device Role / Timing Role: Standoff-rated TVS across DC output rails to clamp spikes induced by transformer leakage or rectifier recovery. Use Value: 36 V VWM aligns with 24 V nominal outputs; 1.0 μA leakage avoids loading regulation feedback networks. |
Use Scenario: Protecting low-noise instrumentation amplifiers and ADC front-ends in portable patient monitors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS on analog sensor inputs (e.g., thermistor, strain gauge bridges) to preserve bandwidth and SNR. Use Value: Sub-1 μA leakage and symmetric bidirectional clamping prevent DC offset shift or signal distortion in precision measurement paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J36CAHM3_A/I | Halogen-free variant with identical electrical specs and AEC-Q101 qualification; same SMB package and thermal performance. | No functional difference; selected where halogen-free compliance is mandated by OEM environmental policy. | Direct material substitution when RoHS + halogen-free requirements apply; no design or layout changes needed. |
| SMAJ36CAHE3/A | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (95 °C/W), same VWM/VBR/VC ratings. | Suitable for space-constrained consumer electronics but not for automotive or high-reliability industrial surge duty. | Use only in cost-sensitive, low-surge-risk applications where 800 W headroom is unnecessary and thermal margin is adequate. |
Compared with SMB8J36CAHE3_A/I, the HM3 variant offers identical protection performance with halogen-free materials, while the SMAJ36CAHE3/A trades 50 % pulse power and thermal robustness for reduced footprint - making SMB8J36CAHE3_A/I the preferred choice for AEC-Q101-compliant, high-energy surge environments.
Availability
SMB8J36CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial fieldbus protection, and medical signal conditioning requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMB8J36CAHE3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific optimization.
The SMB8JxxCA series targets high-power transient suppression in automotive and industrial systems, engineered for AEC-Q101 compliance, low clamping voltage, and robust surge handling in compact SMB packages.
FAQ
What is the clamping voltage of SMB8J36CAHE3_A/I at its rated peak pulse current?
The SMB8J36CAHE3_A/I has a maximum clamping voltage (VC) of 58.1 V when subjected to its rated peak pulse current (IPPM) of 13.8 A with a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 standards and ensures downstream ICs remain within safe operating voltage limits during surge events. The SMB8J36CAHE3_A/I maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C).
Is SMB8J36CAHE3_A/I suitable for automotive applications?
Yes, SMB8J36CAHE3_A/I is AEC-Q101 qualified and specifically designed for automotive use, including engine control units, ADAS sensors, and body electronics. Its construction includes glass-passivated junctions, MSL Level 1 reflow compatibility, and guaranteed performance from -55 °C to +150 °C. The HE3 suffix confirms RoHS compliance and automotive qualification - verified through HTGB, HTRB, and temperature cycling tests per AEC-Q101 Rev D.
How does the bidirectional configuration of SMB8J36CAHE3_A/I affect circuit layout?
The SMB8J36CAHE3_A/I is inherently bidirectional with symmetrical electrical characteristics - meaning either terminal can serve as anode or cathode. No polarity marking is present, and the device functions identically regardless of orientation on the PCB. This simplifies layout for AC-coupled lines (e.g., CAN, RS-485) and eliminates risk of incorrect placement during automated assembly - unlike unidirectional TVS diodes that require strict cathode alignment.
What is the maximum reverse leakage current for SMB8J36CAHE3_A/I at its stand-off voltage?
The SMB8J36CAHE3_A/I exhibits a maximum reverse leakage current (ID) of 1.0 μA at its 36 V stand-off voltage (VWM), measured at 25 °C. This ultra-low leakage preserves signal fidelity in high-impedance sensor interfaces and minimizes standby power loss in battery-powered systems. Leakage remains ≤ 5.0 μA up to +85 °C, ensuring stability across automotive and industrial ambient conditions.
Does SMB8J36CAHE3_A/I require special PCB layout considerations for thermal management?
Yes - optimal thermal performance for SMB8J36CAHE3_A/I requires mounting on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay's recommended pad layout. This achieves the published RθJA of 72 °C/W. Reducing pad size increases junction temperature rise during surge events, potentially degrading clamping consistency and long-term reliability. Thermal vias under pads further improve heat dissipation in high-duty-cycle applications.
SMB8J36CAHE3_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):
- 13.8A
- 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)
SMB8J36CAHE3_A/I FAQ
1.How can I place an order for SMB8J36CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J36CAHE3_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 SMB8J36CAHE3_A/I reliable?
The price and inventory of SMB8J36CAHE3_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 SMB8J36CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMB8J36CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J36CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J36CAHE3_A/I?
SMB8J36CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J36CAHE3_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 SMB8J36CAHE3_A/I?
For technical support, including SMB8J36CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J36CAHE3_A/I requirements.
6.How does Aetrix verify that SMB8J36CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMB8J36CAHE3_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 SMB8J36CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMB8J36CAHE3_A/I?
All SMB8J36CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J36CAHE3_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 SMB8J36CAHE3_A/I part is unused and in its original packaging.
Return procedure for SMB8J36CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J36CAHE3_A/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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