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Vishay General Semiconductor - Diodes Division SMBJ6.5-E3/52
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- Part No.:
- SMBJ6.5-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6.5-E3/52.pdf
- Description:
- TVS DIODE 6.5VWM 12.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,585
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Product details
Overview
SMBJ6.5-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on DC power rails and signal lines. It features a 6.5 V stand-off voltage (VWM), 7.22–7.98 V breakdown voltage (VBR) at 10 mA, 11.2 V maximum clamping voltage (VC) at 53.6 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 power supplies.
For engineers reviewing the SMBJ6.5-E3/52 datasheet, SMBJ6.5-E3/52 pinout, SMBJ6.5-E3/52 application, or SMBJ6.5-E3/52 equivalent, key selection criteria include unidirectional polarity, 11.2 V clamping performance under 53.6 A surge, RoHS-compliant matte tin plating, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamping protection device, conducting only when reverse voltage exceeds its breakdown threshold (7.22–7.98 V). Its low incremental surge resistance and fast response time (<1 ns) enable effective suppression of ESD, lightning-induced surges, and inductive switching transients.
The SMBJ6.5-E3/52 uses a glass-passivated silicon junction and exhibits a temperature coefficient of VBR of +0.061 %/°C. It is rated for continuous operation from –55 °C to +150 °C junction temperature and supports repetitive surge duty cycles up to 0.01 % with derating above 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 6.5 V - Maximum continuous reverse operating voltage before significant leakage; sets minimum system rail margin for reliable non-conduction. |
| VBR (Breakdown) | 7.22–7.98 V at 10 mA - Confirmed breakdown range defining turn-on threshold; ensures predictable clamping onset across production lot. |
| VC (Clamping) | 11.2 V at 53.6 A (10/1000 µs) - Measured clamping voltage during worst-case surge; determines maximum stress imposed on protected downstream circuitry. |
| PPPM | 600 W - Peak pulse power handling capability; defines transient energy absorption limit per IEC 61000-4-5 Level 4 compliance testing. |
| IPPM | 53.6 A - Peak pulse current supported at rated clamping voltage; correlates directly with surge current capacity of 10/1000 µs waveform. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs thermal design margin for sustained power dissipation. |
| Leakage (ID) | 500 µA max at VWM - Reverse leakage current at stand-off voltage; critical for low-power sensor or battery-backed circuits. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional configuration with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated for J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | High-side connection to protected line | Reverse-biased during normal operation; conducts surge current to ground when VIN exceeds VBR. |
| Anode | Ground reference node | Low-impedance return path for clamped surge current; must connect to solid ground plane with minimal inductance. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-earth) without degradation when mounted per recommended pad layout. |
| 11.2 V clamping at 53.6 A | Enables protection of 5 V logic rails and 3.3 V microcontrollers without overvoltage damage during 10/1000 µs transients. |
| Glass passivated junction | Ensures stable VBR and low leakage over temperature and lifetime; eliminates risk of junction corrosion in humid environments. |
| MSL Level 1 (260 °C peak) | Permits standard lead-free reflow without pre-baking; compatible with high-volume automated assembly lines. |
| RoHS-compliant, matte tin leads | Meets J-STD-002 solderability requirements and JESD201 Class 2 whisker resistance; eliminates post-solder cleaning concerns. |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Suppresses load-dump and alternator ripple transients on 12 V input rails feeding DC/DC converters in programmable logic controllers. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between input fuse and bulk capacitor to limit voltage excursions to ≤11.2 V. Use Value: Prevents latch-up or gate oxide damage in synchronous buck controllers rated for 16 V absolute maximum input. |
Use Scenario: Protects LIN bus transceiver inputs against ESD and battery reverse-connection events in door module ECUs. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between LIN line and chassis ground to shunt ±8 kV contact discharge per ISO 10605. Use Value: Maintains signal integrity below 11.2 V clamping level while supporting 20 kbps LIN timing budget without added propagation delay. |
| Consumer Sensor Interface Protection | Telecom PoE Midspan Surge Mitigation |
|
Use Scenario: Shields I²C and analog output pins of MEMS accelerometers in smart home hubs from board-level ESD coupling. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector entry point to minimize stub length and preserve rise time. Use Value: Limits induced voltage to <11.2 V during ±15 kV air discharge, preventing false triggers or ADC saturation in 3.3 V sensor domain. |
Use Scenario: Clamps common-mode surges on Ethernet pairs upstream of IEEE 802.3af/at PD interface in midspan injectors. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices on each pair, referenced to isolated ground, absorbing differential and common-mode energy. Use Value: Withstands 600 W pulses without failure, enabling compliance with IEC 61000-4-5 surge test while preserving 100BASE-TX signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.5A-M3/52 | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package; same VWM, VBR, VC, and PPPM. | Required where halogen-free material declaration is mandated by OEM sustainability policies (e.g., automotive Tier 1 supply chain). | Select when environmental compliance requires halogen-free construction without altering circuit design or layout. |
| SMCJ6.5A-E3/52 | Same VWM/VBR but higher 1500 W PPPM rating in larger SMC (DO-214AB) package; 13.4 V clamping at 112 A. | Suitable for higher-energy surge environments (e.g., outdoor telecom cabinets) where PCB space allows larger footprint. | Choose only if surge threat level exceeds 600 W and layout permits 7.11 mm × 6.22 mm SMC footprint; not drop-in compatible. |
Compared with SMBJ6.5-E3/52, the M3/52 variant offers identical protection performance with halogen-free materials, while the SMCJ6.5A-E3/52 delivers higher surge capacity in a physically incompatible package - requiring layout revision and thermal reassessment.
Availability
SMBJ6.5-E3/52 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, consumer sensor interfaces, and telecom PoE systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ6.5-E3/52 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, precision, and high-volume manufacturability.
The SMBJ series is engineered for robust transient suppression in space-constrained, high-reliability applications - targeting automotive, industrial, and communications equipment where consistent clamping behavior and AEC-Q101 qualification matter.
FAQ
What is the maximum clamping voltage of SMBJ6.5-E3/52 under surge conditions?
The SMBJ6.5-E3/52 has a maximum clamping voltage (VC) of 11.2 V when subjected to a 10/1000 µs waveform with a peak pulse current of 53.6 A. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during transient events. The SMBJ6.5-E3/52 maintains this clamping performance across its specified operating temperature range and is validated per JEDEC and IEC test protocols.
Is SMBJ6.5-E3/52 suitable for automotive applications?
The base SMBJ6.5-E3/52 is commercial-grade and not AEC-Q101 qualified; however, Vishay offers the automotive-grade variant SMBJ6.5HE3_X (e.g., SMBJ6.5HE3_A) with identical electrical characteristics and full AEC-Q101 qualification. For automotive use, SMBJ6.5-E3/52 must be replaced with its HE3-suffixed counterpart - the SMBJ6.5-E3/52 itself is intended for industrial and consumer applications where extended temperature and qualification are not required.
What is the polarity configuration of SMBJ6.5-E3/52?
SMBJ6.5-E3/52 is a unidirectional TVS diode, meaning it functions as a reverse-biased Zener-like clamp with defined anode and cathode terminals. The cathode is marked by a band on the SMB package body. It does not conduct under forward bias beyond typical diode drop (~3.5 V at 50 A), and its protection action occurs exclusively during reverse overvoltage events. Bidirectional variants use "CA" suffixes (e.g., SMBJ6.5CA) and lack polarity marking.
How does SMBJ6.5-E3/52 compare to SMAJ6.5A-E3 in terms of surge capability?
SMBJ6.5-E3/52 delivers 600 W peak pulse power with 11.2 V clamping at 53.6 A, whereas SMAJ6.5A-E3 (in smaller SMA package) is rated for only 400 W and clamps at 11.5 V with lower surge current. The SMBJ6.5-E3/52's larger SMB footprint enables superior thermal dissipation and higher surge endurance - making it preferred for applications demanding repeated or high-energy transients. Both share the same VWM and VBR, but SMBJ6.5-E3/52 offers 50 % more pulse power handling.
What is the moisture sensitivity level (MSL) rating for SMBJ6.5-E3/52?
SMBJ6.5-E3/52 meets MSL Level 1 per J-STD-020, with a maximum peak reflow temperature of 260 °C. This means it can be exposed indefinitely to factory ambient conditions without baking prior to soldering and is fully compatible with standard lead-free reflow profiles. The MSL Level 1 rating reflects its robust molding compound and terminal finish, ensuring reliability in high-volume SMT assembly without process constraints.
SMBJ6.5-E3/52 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 12.3V
- Current - Peak Pulse (10/1000µs):
- 48.8A
- Power - Peak Pulse:
- 600W
- 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 (SMBJ)
SMBJ6.5-E3/52 FAQ
1.How can I place an order for SMBJ6.5-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6.5-E3/52 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 SMBJ6.5-E3/52 reliable?
The price and inventory of SMBJ6.5-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ6.5-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ6.5-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6.5-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6.5-E3/52?
SMBJ6.5-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6.5-E3/52 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 SMBJ6.5-E3/52?
For technical support, including SMBJ6.5-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6.5-E3/52 requirements.
6.How does Aetrix verify that SMBJ6.5-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ6.5-E3/52 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 SMBJ6.5-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ6.5-E3/52?
All SMBJ6.5-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6.5-E3/52, 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 SMBJ6.5-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ6.5-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ6.5-E3/52 Tags
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