My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ8.0CA-M3/5B
;;2.jpg)
- Part No.:
- SMBJ8.0CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ8.0CA-M3/5B.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,036
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ8.0CA-M3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 8.0 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 μs), and clamps to ≤13.6 V at 44.1 A peak surge current - ideal for protecting MOSFETs, sensor interfaces, and I/O lines in industrial control systems.
For engineers reviewing the SMBJ8.0CA-M3/5B datasheet, SMBJ8.0CA-M3/5B pinout, SMBJ8.0CA-M3/5B application, or SMBJ8.0CA-M3/5B equivalent, key selection criteria include bidirectional clamping capability, low clamping voltage under surge, MSL Level 1 moisture sensitivity, halogen-free RoHS compliance, and compatibility with automated SMT placement on PCBs with 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at VWM), while the 100 °C/W junction-to-ambient thermal resistance supports operation up to +150 °C junction temperature.
The device meets ANSI/IEEE C62.35 standards for transient suppression and delivers repeatable clamping performance under 0.01% duty-cycle 10/1000 μs surges. Its low incremental surge resistance and fast response time (<1 ns) minimize let-through energy during ESD or lightning-induced transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min / max | 8.89 V / 9.83 V at 1.0 mA - verified breakdown threshold range ensuring reliable turn-on margin |
| VC @ IPPM | ≤13.6 V at 44.1 A - clamping voltage limiting downstream component stress during surge events |
| PPPM | 600 W (10/1000 μs waveform) - peak transient energy absorption capacity per pulse |
| IPPM | 44.1 A - maximum non-repetitive surge current the device safely conducts |
| TJ max | +150 °C - maximum junction temperature supporting industrial and automotive-adjacent environments |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 5.21 mm × 4.06 mm footprint and 2.20 mm height |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, qualified to JESD 201 Class 2 whisker test.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | One terminal of symmetrical PN junction; accepts surge current in either direction |
| Cathode | Transient current exit (bidirectional) | Second terminal of symmetrical PN junction; completes low-impedance path during clamping |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses, or ungrounded lines without polarity constraints |
| 600 W peak pulse power | Supports robust immunity against IEC 61000-4-5 Level 4 surges (4 kV line-earth) when mounted on 5 mm × 5 mm copper pads |
| Halogen-free & RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for industrial and consumer electronics without compromising surge rating |
| MSL Level 1 (260 °C peak reflow) | Allows standard lead-free reflow soldering without pre-baking or special handling |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage exposure to protected ICs compared to higher-ratio suppressors |
Applications
| Industrial Motor Control | Automotive Sensor Interface |
|---|---|
|
Use Scenario: Protection of gate drivers and feedback sensing lines in variable-frequency drives exposed to inductive switching transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across MOSFET gate-source or op-amp inputs to clamp ±1 kV transients. Use Value: Prevents latch-up or oxide damage in 3.3 V/5 V logic-level gate drivers by limiting voltage to ≤13.6 V during 44.1 A surges. |
Use Scenario: ESD and load-dump protection on LIN bus or analog sensor outputs (e.g., pressure, temperature) in engine control modules. IC Role / Device Role / Timing Role: Primary transient shunt at connector interface, upstream of signal conditioning circuitry. Use Value: Maintains signal integrity under ISO 10605 (30 kV air discharge) and ISO 7637-2 Pulse 1/2a by clamping within 1 ns. |
| Consumer Power Adapter | Telecom Data Line |
|
Use Scenario: Secondary-side overvoltage suppression on 12 V DC output rails of switched-mode power supplies subject to capacitor discharge transients. IC Role / Device Role / Timing Role: Standoff-clamping TVS parallel to load, triggered only during fault conditions exceeding 8.0 V. Use Value: Limits fault voltage to safe levels for downstream USB-PD controllers or microcontrollers without affecting normal 12 V regulation. |
Use Scenario: Protection of RS-485 transceiver I/O pins against induced surges from nearby AC wiring or lightning coupling. IC Role / Device Role / Timing Role: Differential-line TVS connected between A/B lines and ground, leveraging bidirectional symmetry. Use Value: Enables >15 kV ESD immunity (IEC 61000-4-2) and 1 kV surge tolerance (IEC 61000-4-5) without signal distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0CA-E3/5B | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3) | Preferred for commercial-grade designs where halogen content is unrestricted | Select when cost optimization is prioritized and halogen-free requirement is absent |
| SMAJ8.0CA-M3 | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (140 °C/W) | Suitable for space-constrained, lower-energy surge environments (e.g., portable devices) | Choose only if board area is critical and 400 W surge rating suffices for system-level testing |
Compared with SMBJ8.0CA-M3/5B, the E3 variant offers identical protection performance with relaxed material compliance, while the SMAJ8.0CA-M3 trades surge robustness and thermal performance for footprint reduction - making the SMBJ8.0CA-M3/5B optimal for industrial-grade 600 W surge immunity with halogen-free assurance.
Availability
SMBJ8.0CA-M3/5B is available at Aetrix Electronics and suitable for industrial motor control, automotive sensor interface, and telecom data line protection requiring stable component supply and full traceability through Vishay's authorized channel.
Supply support for SMBJ8.0CA-M3/5B 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, and protection devices with emphasis on reliability, precision, and application-specific validation.
The SMBJ series was engineered for high-energy transient suppression in harsh environments, targeting industrial automation, transportation, and infrastructure systems where long-term stability and surge repeatability are critical.
FAQ
What is the clamping voltage of SMBJ8.0CA-M3/5B at its rated peak pulse current?
The SMBJ8.0CA-M3/5B clamps to a maximum of 13.6 V when subjected to its rated peak pulse current of 44.1 A (10/1000 μs waveform). This value is measured under standardized test conditions with the device mounted on 0.2" × 0.2" copper pads, ensuring consistent performance across production units. The low clamping voltage directly limits stress on downstream components such as microcontrollers or transceivers.
Is SMBJ8.0CA-M3/5B suitable for automotive applications?
SMBJ8.0CA-M3/5B is halogen-free and RoHS-compliant but not AEC-Q101 qualified. For automotive use, Vishay offers the HM3-suffixed variants (e.g., SMBJ8.0CAHM3_B/I) with AEC-Q101 qualification. The SMBJ8.0CA-M3/5B remains appropriate for non-safety-critical automotive subsystems like infotainment or body electronics where qualification is not mandated, provided system-level validation confirms robustness.
How does the bidirectional design of SMBJ8.0CA-M3/5B affect its circuit placement?
The bidirectional design of SMBJ8.0CA-M3/5B eliminates polarity constraints, allowing it to be placed across any two nodes requiring symmetrical overvoltage protection - such as differential signal pairs (RS-485 A/B), AC-coupled lines, or ungrounded power rails. Unlike unidirectional TVS diodes, SMBJ8.0CA-M3/5B has no cathode band marking and functions identically regardless of orientation on the PCB.
What is the maximum operating temperature for SMBJ8.0CA-M3/5B?
The SMBJ8.0CA-M3/5B has a specified operating junction temperature range of -55 °C to +150 °C. Its thermal resistance (RθJA) is 100 °C/W under standard mounting conditions, meaning power dissipation must be limited to avoid exceeding TJ max. At ambient temperatures up to +85 °C, the device retains full 600 W surge capability when properly heatsinked via PCB copper pour.
Does SMBJ8.0CA-M3/5B require derating at elevated ambient temperatures?
Yes, SMBJ8.0CA-M3/5B requires derating above 25 °C ambient, per Figure 2 in the Vishay datasheet (Doc. #88392). At 85 °C ambient, its peak pulse power drops to approximately 480 W (80% of rated 600 W), and at 125 °C, it falls to ~300 W. Derating ensures junction temperature stays within the +150 °C limit during repetitive surge events and maintains long-term reliability.
SMBJ8.0CA-M3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 44.1A
- 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)
SMBJ8.0CA-M3/5B FAQ
1.How can I place an order for SMBJ8.0CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ8.0CA-M3/5B 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 SMBJ8.0CA-M3/5B reliable?
The price and inventory of SMBJ8.0CA-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ8.0CA-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ8.0CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ8.0CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ8.0CA-M3/5B?
SMBJ8.0CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ8.0CA-M3/5B 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 SMBJ8.0CA-M3/5B?
For technical support, including SMBJ8.0CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ8.0CA-M3/5B requirements.
6.How does Aetrix verify that SMBJ8.0CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ8.0CA-M3/5B 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 SMBJ8.0CA-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ8.0CA-M3/5B?
All SMBJ8.0CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ8.0CA-M3/5B, 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 SMBJ8.0CA-M3/5B part is unused and in its original packaging.
Return procedure for SMBJ8.0CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ8.0CA-M3/5B 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 …
