My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ64A-M3/52
;;2.jpg)
- Part No.:
- SMBJ64A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ64A-M3/52.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,837
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ64A-M3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 64 V stand-off voltage (VWM), 71.1–78.6 V breakdown voltage (VBR) at 1 mA, 103 V maximum clamping voltage (VC) at 5.8 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in industrial motor drives, automotive body control modules, and industrial sensor interfaces.
For engineers reviewing the SMBJ64A-M3/52 datasheet, SMBJ64A-M3/52 pinout, SMBJ64A-M3/52 application, or SMBJ64A-M3/52 equivalent, key selection criteria include verified clamping performance under 5.8 A surge, unidirectional polarity with cathode band marking, halogen-free RoHS-compliant construction (M3 suffix), and compatibility with automated SMT placement on standard PCB pad layouts per JEDEC DO-214AA footprint.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when transient voltage exceeds VBR, it avalanches into low-impedance conduction to divert surge current away from downstream ICs or MOSFETs. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while the 20 °C/W junction-to-lead thermal resistance supports reliable energy dissipation during repetitive transients.
The device is rated for -55 °C to +150 °C operating junction temperature, meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), and exhibits 0.105 %/°C temperature coefficient of VBR. It is not AEC-Q101 qualified (M3 suffix denotes halogen-free commercial grade only; AEC-Q101 requires HE3/HM3 suffix).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse working voltage before leakage exceeds 1 µA; defines safe DC rail operating margin. |
| VBR (min/max) | 71.1 V / 78.6 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on above normal operating voltage. |
| VC @ IPPM | 103 V at 5.8 A - Clamped voltage during 600 W 10/1000 µs surge; determines maximum stress on protected circuitry. |
| PPPM | 600 W - Peak pulse power handling capability; validates compliance with IEC 61000-4-5 Level 4 surge immunity requirements. |
| IFSM | 100 A - Non-repetitive forward surge rating (8.3 ms half-sine); supports protection against inductive switch-off events. |
| RθJL | 20 °C/W - Junction-to-lead thermal resistance; enables thermal design using PCB copper pads as primary heat path. |
| TJ max. | +150 °C - Maximum junction temperature; allows operation in under-hood or high-ambient industrial environments. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Cathode indicated by band marking on cathode end; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VIN > VBR. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or lower-potential rail; completes shunt path during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validates robustness against IEC 61000-4-5 surges up to ±4 kV (line-earth) without degradation. |
| 103 V clamping voltage at 5.8 A | Limits voltage overshoot across protected MOSFET gate drivers or microcontroller I/O pins during ESD/EFT events. |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without popcorn or delamination risk. |
| Halogen-free (M3 suffix) | Meets IPC-4101D/21 and EU Directive 2011/65/EU Annex II amendments for environmentally compliant manufacturing. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of 24 V DC supply rails feeding H-bridge gate drivers against inductive kickback from solenoid valves and brushed motors. IC Role / Device Role / Timing Role: Shunt clamping device placed between rail and ground, activated within <1 ns upon overvoltage detection. Use Value: Limits transient voltage to ≤103 V, preventing gate oxide rupture in 30 V-rated MOSFETs and ensuring ASIL-B functional safety compliance. |
Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins from load dump and jump-start transients in door module ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground, cathode-to-LIN line, clamping negative-going spikes and positive surges. Use Value: Withstands 100 A 8.3 ms surge (IFSM) and maintains <1 µA leakage at 64 V, preserving bus signal integrity during sleep mode. |
| Industrial Sensor Interfaces | Telecom Power Supply Inputs |
|
Use Scenario: Protecting 4–20 mA current loop transmitter outputs from field wiring ESD and lightning-induced surges in factory automation systems. IC Role / Device Role / Timing Role: Bidirectional protection not applicable; SMBJ64A-M3/52 used in unidirectional configuration with series current-limiting resistor. Use Value: Clamps 600 W transients while adding <0.5 pF junction capacitance (typ.) - negligible impact on 1 kHz loop bandwidth. |
Use Scenario: Secondary-side overvoltage suppression on 48 V telecom rectifier outputs feeding base station backplane logic. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after bulk filter capacitor to absorb residual switching spikes and external surges. Use Value: 64 V VWM provides 20 % margin above nominal 48 V rail, while 103 V VC ensures downstream 65 V-rated DC-DC converters remain within absolute maximum ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A-E3/52 | Same electrical specs; RoHS-compliant but contains brominated flame retardants (non-halogen-free). | Acceptable where halogen-free requirement is not mandated (e.g., non-automotive commercial equipment). | Select when cost sensitivity outweighs halogen-free compliance; identical footprint and assembly process. |
| SMBJ64CA-M3/52 | Bidirectional variant; symmetric VBR = 71.1–78.6 V, same VC = 103 V, but no polarity marking. | Required for AC-coupled or floating signal lines (e.g., RS-485, CAN FD) where bidirectional transients occur. | Choose only if protecting balanced differential pairs or ungrounded circuits; not drop-in for unidirectional DC rails. |
Compared with SMBJ64A-M3/52, the E3/52 variant offers identical protection performance without halogen-free assurance, while the SMBJ64CA-M3/52 enables symmetrical clamping but eliminates cathode/anode orientation constraints - critical for layout flexibility in bidirectional data lines but unsuitable for polarized DC rail protection.
Availability
SMBJ64A-M3/52 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supply inputs requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBJ64A-M3/52 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, power efficiency, and automotive-grade qualification.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting industrial automation, transportation, and communications infrastructure where failure resilience and consistent clamping performance are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ64A-M3/52 under a 600 W surge?
The SMBJ64A-M3/52 has a maximum clamping voltage (VC) of 103 V when subjected to its rated 5.8 A peak pulse current (IPPM) under a 10/1000 µs waveform - directly corresponding to the 600 W peak pulse power rating. This value is measured per Figure 1 and Table on page 2 of Vishay document 88392, and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ64A-M3/52 maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C).
Is SMBJ64A-M3/52 suitable for automotive applications requiring AEC-Q101 qualification?
No, SMBJ64A-M3/52 is not AEC-Q101 qualified. The "M3" suffix indicates halogen-free, RoHS-compliant commercial-grade construction only. For AEC-Q101 compliance, Vishay specifies the HM3 suffix (e.g., SMBJ64A-HM3_X), which undergoes additional stress testing including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing. The SMBJ64A-M3/52 may be used in non-safety-critical automotive subsystems, but designers must validate suitability per ISO/TS 16949 processes and cannot claim AEC-Q101 conformance for this part number.
How does the SMBJ64A-M3/52 differ from SMBJ64CA-M3/52?
The SMBJ64A-M3/52 is unidirectional with cathode band marking and blocks reverse current until VBR is exceeded, whereas SMBJ64CA-M3/52 is bidirectional with symmetric breakdown in both directions and no polarity marking. Their VBR, VC, and PPPM values are identical, but the unidirectional SMBJ64A-M3/52 is intended for DC rail protection (e.g., 24 V supply), while the bidirectional SMBJ64CA-M3/52 suits AC or floating signal lines (e.g., RS-485). They share the same SMB package and thermal characteristics, but are not pin-compatible replacements due to differing polarity requirements.
What is the thermal resistance from junction to ambient for SMBJ64A-M3/52?
The typical junction-to-ambient thermal resistance (RθJA) for SMBJ64A-M3/52 is 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Thermal Characteristics table on page 3 of Vishay document 88392. However, its junction-to-lead resistance (RθJL) is 20 °C/W - indicating that effective heat transfer relies primarily on conduction through the leads into the PCB, not convection from the package surface. This makes thermal design dependent on PCB copper area and layer stack-up rather than heatsinking the component body.
Does SMBJ64A-M3/52 meet moisture sensitivity level (MSL) requirements for lead-free reflow?
Yes, SMBJ64A-M3/52 meets MSL Level 1 per J-STD-020, with a maximum peak reflow temperature of 260 °C - fully compatible with standard lead-free soldering profiles. This rating is confirmed in the Mechanical Data section of Vishay document 88392 and applies to both E3 and M3 suffix variants. No dry-packaging or floor-life limitations apply, enabling uninterrupted SMT assembly without baking or special handling - a key advantage for high-volume manufacturing of industrial and telecom equipment using the SMBJ64A-M3/52.
SMBJ64A-M3/52 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):
- 64V
- Voltage - Breakdown (Min):
- 71.7V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 5.8A
- 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)
SMBJ64A-M3/52 FAQ
1.How can I place an order for SMBJ64A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ64A-M3/52 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 SMBJ64A-M3/52 reliable?
The price and inventory of SMBJ64A-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ64A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ64A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ64A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ64A-M3/52?
SMBJ64A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ64A-M3/52 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 SMBJ64A-M3/52?
For technical support, including SMBJ64A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ64A-M3/52 requirements.
6.How does Aetrix verify that SMBJ64A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ64A-M3/52 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 SMBJ64A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ64A-M3/52?
All SMBJ64A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ64A-M3/52, 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 SMBJ64A-M3/52 part is unused and in its original packaging.
Return procedure for SMBJ64A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ64A-M3/52 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 …
