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Vishay General Semiconductor - Diodes Division SMB8J36C-E3/5B
- Part No.:
- SMB8J36C-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J36C-E3/5B.pdf
- Description:
- TVS DIODE 36VWM 64.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMB8J36C-E3/5B 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 power and signal 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. It is AEC-Q101 qualified and used to protect automotive sensor interfaces against ISO 7637-2 load dump and ESD transients.
For engineers reviewing the SMB8J36C-E3/5B datasheet, SMB8J36C-E3/5B pinout, SMB8J36C-E3/5B application, or SMB8J36C-E3/5B equivalent, key selection criteria include bi-directional clamping capability, 1.0 µA max reverse leakage at 36 V, -55 °C to +150 °C operating junction temperature, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bi-directional TVS diode operates symmetrically across both polarities, enabling robust protection of AC-coupled or differential signal paths without polarity sensitivity. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance under repetitive transient stress.
The device complies with ANSI/IEEE C62.35 standards for surge suppression and meets MSL level 1 per J-STD-020 with 260 °C peak reflow profile. Thermal resistance is 72 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), supporting reliable operation in thermally constrained automotive PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 36 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 40.0–44.2 V at 1.0 mA - Confirmed breakdown range ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 58.1 V at IPPM = 13.8 A - Limits downstream voltage stress during 800 W transient; critical for MOSFET/IC survival. |
| PPPM (Peak Pulse Power) | 800 W (10/1000 µs) - Specifies energy-handling capacity for automotive load dump and lightning-induced surges. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Ensures minimal standby power loss and signal integrity in high-impedance sensor circuits. |
| TJ Range | -55 °C to +150 °C - Supports under-hood automotive deployment and industrial environments with wide thermal cycling. |
| Package | DO-214AA (SMB) - Standardized surface-mount outline with 2.13–2.44 mm body width and cathode-band polarity marking. |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, RoHS-compliant, MSL Level 1, 260 °C peak reflow. Bi-directional configuration has no polarity marking; terminals are symmetrical anode/cathode pair.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bi-directional transient conduction path | Both terminals function identically; enables placement without orientation check in AC or differential lines. |
| Cathode Band (absent) | Polarity indicator | Not present on bi-directional variants-confirms non-polarized operation per SMB8JxxCA series designation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per stress test plan. |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift in harsh environments. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 16750-2 pulse 5a), improving protection margin. |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing at 260 °C peak without moisture-related popcorn failure. |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed automotive ECUs and industrial control enclosures. |
Applications
| Automotive Sensor Interface | Industrial CAN Bus Protection |
|---|---|
|
Use Scenario: Protecting LIN/CAN transceiver inputs and outputs from battery line transients and ESD in vehicle door modules. IC Role / Device Role / Timing Role: Bi-directional clamping element placed directly at connector entry point to shunt surge energy before reaching PHY IC. Use Value: Withstands 800 W pulses while clamping to ≤58.1 V, preventing damage to 36 V-rated CAN transceivers such as TJA1042T/3. |
Use Scenario: Safeguarding RS-485/RS-422 data lines in factory automation PLCs exposed to motor switching noise and ground bounce. IC Role / Device Role / Timing Role: Low-capacitance TVS placed across differential pair (A/B) to suppress common-mode surges without distorting signal edges. Use Value: 1.0 µA leakage at 36 V avoids loading high-impedance bias networks; symmetrical response preserves differential integrity. |
| Consumer Power Adapter Input | Telecom DSL Line Protection |
|
Use Scenario: Secondary-side DC input protection in USB-C PD adapters subject to hot-plug and capacitive discharge events. IC Role / Device Role / Timing Role: Standoff clamp between VBUS and GND, activated only during >36 V excursions to avoid interference with normal 5–20 V operation. Use Value: 58.1 V clamping limits stress on downstream buck controller ICs (e.g., MPQ4572) during 1 kV EFT bursts. |
Use Scenario: Primary protection for ADSL/VDSL line drivers connected to outside plant wiring vulnerable to lightning induction. IC Role / Device Role / Timing Role: First-stage surge absorber mounted at RJ-11 jack, coordinated with gas discharge tube (GDT) upstream. Use Value: Fast 10/1000 µs response captures initial surge edge; 800 W rating handles IEC 61000-4-5 Level 4 (4 kV) combination wave. |
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 | Same VWM (36 V), same DO-214AA package, but rated for 600 W PPPM (vs. 800 W); lower IPPM (11.1 A). | Lower energy handling limits suitability to consumer-grade rather than automotive load-dump scenarios. | Select SMBJ36CA only when system-level surge testing does not exceed IEC 61000-4-5 Level 3 (2 kV). |
| SMCJ36CA | Same VWM and bi-directionality, but DO-214AB (SMC) package: larger footprint (7.11 mm × 6.22 mm), higher PPPM (1500 W), IPPM (24.9 A). | Requires PCB layout change; suited for higher-power industrial drives where space permits. | Choose SMCJ36CA when board area allows and peak surge energy exceeds 800 W, e.g., motor drive DC bus protection. |
Compared with SMBJ36CA and SMCJ36CA, SMB8J36C-E3/5B delivers optimal balance of automotive-grade ruggedness (AEC-Q101), compact SMB footprint, and 800 W surge capacity-making it the preferred choice for space-constrained automotive and industrial edge nodes requiring validated reliability without package redesign.
Availability
SMB8J36C-E3/5B is available at Aetrix Electronics and suitable for automotive sensor modules, industrial CAN/RS-485 interfaces, and telecom DSL line cards requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMB8J36C-E3/5B 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 automotive, industrial, and computing applications.
The SMB8JxxCA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-reliability bi-directional surge suppression in AEC-Q101-compliant automotive subsystems and harsh-environment industrial controls.
FAQ
What is the clamping voltage of SMB8J36C-E3/5B at its rated peak pulse current?
The SMB8J36C-E3/5B has a maximum clamping voltage (VC) of 58.1 V at its specified peak pulse current (IPPM) of 13.8 A, measured using the standard 10/1000 µs double-exponential waveform. This value is guaranteed across the full operating temperature range and ensures predictable overvoltage limiting for protected ICs. The SMB8J36C-E3/5B datasheet confirms this parameter in Table 2 (Bi-directional Devices) under "MAXIMUM CLAMPING VOLTAGE AT IPPM".
Is SMB8J36C-E3/5B suitable for automotive applications?
Yes, SMB8J36C-E3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its -55 °C to +150 °C junction temperature range, MSL Level 1 reflow compatibility, and validation against surge, thermal cycling, and HTRB tests meet automotive electronics requirements. The SMB8J36C-E3/5B is commonly deployed in body control modules and ADAS sensor units per Vishay's application guidance.
How does the bi-directional configuration of SMB8J36C-E3/5B affect PCB layout?
The bi-directional configuration of SMB8J36C-E3/5B eliminates polarity constraints: no cathode band marking is present, and either terminal may connect to either side of the protected line. This simplifies automated placement and reduces assembly errors in differential or AC-coupled circuits. Layout follows standard DO-214AA pad dimensions (5.0 mm × 5.0 mm copper per terminal), with no orientation-dependent routing required for the SMB8J36C-E3/5B.
What is the reverse leakage current specification for SMB8J36C-E3/5B at its stand-off voltage?
The SMB8J36C-E3/5B exhibits a maximum reverse leakage current (ID) of 1.0 µA at its stand-off voltage (VWM) of 36 V, measured at 25 °C. This ultra-low leakage preserves signal integrity in high-impedance sensor front-ends and minimizes standby power loss in battery-powered systems. The value is confirmed in the "BI-DIRECTIONAL" electrical characteristics table of the Vishay document 88422 for the SMB8J36CA variant.
Does SMB8J36C-E3/5B require derating at elevated ambient temperatures?
Yes, SMB8J36C-E3/5B requires derating above TA = 25 °C, as shown in Figure 2 of the Vishay datasheet (document 88422). Peak pulse power decreases linearly to ~50% at 125 °C ambient. Derating is based on thermal resistance (RθJA = 72 °C/W); proper copper pad area (0.2″ × 0.2″ per terminal) must be maintained to achieve published ratings. Designers must apply this derating curve when specifying SMB8J36C-E3/5B for high-temperature enclosures.
SMB8J36C-E3/5B 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB8J36C-E3/5B FAQ
1.How can I place an order for SMB8J36C-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J36C-E3/5B 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 SMB8J36C-E3/5B reliable?
The price and inventory of SMB8J36C-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J36C-E3/5B is usually 5 days.
3.What payment methods are accepted for SMB8J36C-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J36C-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J36C-E3/5B?
SMB8J36C-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J36C-E3/5B 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 SMB8J36C-E3/5B?
For technical support, including SMB8J36C-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J36C-E3/5B requirements.
6.How does Aetrix verify that SMB8J36C-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMB8J36C-E3/5B 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 SMB8J36C-E3/5B meets industry standards.
7.What is the process for return or replacement of SMB8J36C-E3/5B?
All SMB8J36C-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J36C-E3/5B, 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 SMB8J36C-E3/5B part is unused and in its original packaging.
Return procedure for SMB8J36C-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J36C-E3/5B Tags
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