My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ7.0A-E3/52
;;2.jpg)
- Part No.:
- SMBJ7.0A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.0A-E3/52.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:15,301
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ7.0A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed to protect sensitive electronics against ESD, lightning-induced surges, and inductive switching transients. It features a 7.0 V stand-off voltage (VWM), 7.78–8.60 V breakdown voltage (VBR) at 10 mA, 12.0 V clamping voltage (VC) at 50.0 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the SMBJ7.0A-E3/52 datasheet, SMBJ7.0A-E3/52 pinout, SMBJ7.0A-E3/52 application, or SMBJ7.0A-E3/52 equivalent, key selection criteria include clamping performance under 50 A surge, unidirectional polarity for DC rail protection, RoHS-compliant commercial-grade construction, and compatibility with automated SMT placement on PCBs with 0.2" × 0.2" copper pads.
Technical Context
The SMBJ7.0A-E3/52 operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold, thereby shunting transient energy to ground. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance for consistent clamping behavior across repetitive transients.
Thermal design relies on RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), requiring minimum 0.2" × 0.2" copper pad area per terminal for rated 600 W pulse handling. The device meets MSL Level 1 per J-STD-020 and supports peak reflow up to 260 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 7.0 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin. |
| VBR (Breakdown Voltage) | 7.78–8.60 V at 10 mA - Confirmed avalanche onset range; ensures reliable triggering above nominal supply. |
| VC (Clamping Voltage) | 12.0 V at IPPM = 50.0 A - Peak voltage seen by protected circuit during 10/1000 µs surge; limits stress on downstream ICs. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy absorption capability under standardized 10/1000 µs waveform. |
| IPPM (Peak Pulse Current) | 50.0 A - Maximum non-repetitive surge current the device can safely clamp without degradation. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in industrial ambient environments up to +85 °C with proper layout. |
| Package | SMB (DO-214AA) - Low-profile surface-mount outline with cathode band marking; compatible with standard SMT pick-and-place. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return plane; completes clamping loop during transient events. |
| Cathode | Reverse-biased terminal / Protection node | Connected to protected line (e.g., 5 V rail); conducts when line voltage exceeds VBR, diverting surge to Anode. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 5 V systems without derating. |
| 12.0 V clamping at 50 A | Limits voltage overshoot on 5 V logic rails to <2.4× nominal, preserving CMOS input integrity during fast transients. |
| Low profile SMB package | 0.220" × 0.155" footprint fits high-density layouts; compatible with IPC-7351B SMB land patterns. |
| RoHS-compliant, commercial grade (E3 suffix) | Meets EU RoHS Directive 2011/65/EU; suitable for consumer, computing, and industrial applications without automotive qualification overhead. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow without moisture sensitivity concerns or baking requirements. |
Applications
| USB Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: 5 V USB-powered peripheral exposed to hot-plug transients and ESD events. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBUS and GND to clamp overvoltage before it reaches USB controller or LDO. Use Value: Clamps 50 A surge to ≤12.0 V, preventing latch-up or gate oxide damage in USB PHY ICs operating at 5 V ±5 %. |
Use Scenario: 4–20 mA analog sensor loop in factory automation subject to motor-switching noise. IC Role / Device Role / Timing Role: TVS mounted across signal and return lines to absorb inductive kickback from solenoid drivers. Use Value: Limits transient voltage to 12.0 V, maintaining signal integrity within 12-bit ADC input range and avoiding saturation or reset. |
| DC-DC Converter Output Rail Protection | Microcontroller I/O Pin ESD Hardening |
|
Use Scenario: 5 V output of buck converter powering FPGA core logic in embedded control unit. IC Role / Device Role / Timing Role: TVS connected from regulated 5 V rail to ground to suppress load-dump spikes and cross-talk from adjacent switching stages. Use Value: Absorbs 600 W pulses without thermal runaway, ensuring uninterrupted operation during 100 ms transients per IEC 61000-4-4. |
Use Scenario: GPIO pins of ARM Cortex-M microcontroller interfacing with external buttons or indicators. IC Role / Device Role / Timing Role: Discrete TVS placed at each I/O pin to shunt HBM ESD (±8 kV) and system-level CDM events. Use Value: Responds in <1 ps to limit pin voltage to 12.0 V, preventing gate oxide rupture and latent failure in 3.3 V/5 V tolerant I/O structures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A-M3/52 | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package. | No functional difference; selected where halogen-free compliance is mandated for environmental reporting. | Choose SMBJ7.0A-M3/52 when halogen-free material declaration is required per IPC-1752A or customer sustainability policy. |
| SMBJ7.0CA-E3/52 | Bidirectional version with same VWM (7.0 V), VBR (7.78–8.60 V), and VC (12.0 V), but symmetrical clamping in both polarities. | Required for AC-coupled or floating signal lines (e.g., RS-485, CAN bus) where polarity reversal occurs. | Choose SMBJ7.0CA-E3/52 only when protecting bidirectional signals; SMBJ7.0A-E3/52 is optimal for DC rails with defined polarity. |
Compared with SMBJ7.0A-M3/52, the SMBJ7.0A-E3/52 offers identical surge performance but lacks halogen-free certification; compared with SMBJ7.0CA-E3/52, it provides lower leakage and optimized clamping for unidirectional DC use, avoiding unnecessary bidirectional capacitance in power rail designs.
Availability
SMBJ7.0A-E3/52 is available at Aetrix Electronics and suitable for USB power input protection, industrial sensor signal line protection, DC-DC converter output rail protection, and microcontroller I/O pin ESD hardening requiring stable component supply and full traceability.
Supply support for SMBJ7.0A-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-power handling.
The SMBJ series is engineered for board-level transient suppression in consumer, industrial, and telecom equipment, delivering consistent clamping performance across temperature and lifetime with industry-standard SMB packaging.
FAQ
What is the maximum clamping voltage of SMBJ7.0A-E3/52 under a 10/1000 µs surge?
The SMBJ7.0A-E3/52 has a maximum clamping voltage (VC) of 12.0 V when subjected to a 50.0 A peak pulse current with a 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88392 and defines the upper voltage limit imposed on protected circuits during standardized surge events.
Is SMBJ7.0A-E3/52 suitable for protecting a 5 V microcontroller power rail?
Yes, SMBJ7.0A-E3/52 is specifically suited for 5 V rail protection: its 7.0 V stand-off voltage (VWM) provides 40 % margin above nominal 5 V, while its 12.0 V clamping voltage ensures downstream ICs remain within absolute maximum ratings during transients. The device's 600 W rating handles common IEC 61000-4-5 surges without degradation.
Does SMBJ7.0A-E3/52 meet RoHS requirements?
Yes, SMBJ7.0A-E3/52 is RoHS-compliant per EU Directive 2011/65/EU, as confirmed by the "E3" suffix in its ordering code. It contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits, and is rated for commercial-grade applications.
What is the thermal resistance from junction to ambient for SMBJ7.0A-E3/52?
The typical junction-to-ambient thermal resistance (RθJA) of SMBJ7.0A-E3/52 is 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal, as specified in the Thermal Characteristics table of Vishay document 88392. This value assumes standard FR-4 PCB with minimal copper area and guides derating above 25 °C ambient.
How does SMBJ7.0A-E3/52 differ from SMBJ7.0CA-E3/52?
SMBJ7.0A-E3/52 is unidirectional with cathode-band polarity marking and optimized for DC rail protection, whereas SMBJ7.0CA-E3/52 is bidirectional with symmetrical clamping in both directions-required for AC or floating signals like RS-485. Both share identical VWM, VBR, and VC, but SMBJ7.0A-E3/52 exhibits lower reverse leakage at VWM.
SMBJ7.0A-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 50A
- 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)
SMBJ7.0A-E3/52 FAQ
1.How can I place an order for SMBJ7.0A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.0A-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 SMBJ7.0A-E3/52 reliable?
The price and inventory of SMBJ7.0A-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 SMBJ7.0A-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ7.0A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.0A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.0A-E3/52?
SMBJ7.0A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.0A-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 SMBJ7.0A-E3/52?
For technical support, including SMBJ7.0A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.0A-E3/52 requirements.
6.How does Aetrix verify that SMBJ7.0A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ7.0A-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 SMBJ7.0A-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ7.0A-E3/52?
All SMBJ7.0A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.0A-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 SMBJ7.0A-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ7.0A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.0A-E3/52 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
