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Diodes Incorporated SMBJ64CA-13-F
- Part No.:
- SMBJ64CA-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ64CA-13-F.pdf
- Description:
- TVS DIODE 64VWM 103VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:15,179
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Product details
Overview
SMBJ64CA-13-F from Diodes Incorporated is a bi-directional 600W surface-mount transient voltage suppressor (TVS) diode with 64V reverse standoff voltage, 71.1–81.8V breakdown range at 1mA, 103V max clamping voltage at 5.8A peak pulse current, and SMB package. It protects DC power rails and data lines in industrial power supplies, automotive ECUs, and PoE-powered devices against ESD and lightning-induced surges.
For engineers reviewing the SMBJ64CA-13-F datasheet, SMBJ64CA-13-F pinout, SMBJ64CA-13-F application, or SMBJ64CA-13-F equivalent, key selection criteria include clamping voltage margin relative to system rail, unidirectional vs. bi-directional polarity requirements for AC-coupled or differential signal paths, and thermal derating above +25°C ambient.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, enabling protection of AC signals, differential buses (e.g., RS-485), and floating power domains without polarity constraints. Its glass-passivated junction ensures stable leakage (<5µA at 64V) and repeatable clamping performance over temperature (-55°C to +150°C).
The device responds to transients with sub-nanosecond turn-on time, clamping 8.3ms half-sine surges up to 5.8A while limiting voltage to ≤103V. Its 600W peak pulse power rating is derated linearly at 4.8W/°C above +25°C ambient, supporting reliable operation under sustained surge stress in enclosed enclosures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - Sustains single 8.3ms surges up to 5.8A without failure |
| Reverse Standoff Voltage (VRWM) | 64V - Maximum continuous DC or RMS voltage before significant leakage |
| Breakdown Voltage (VBR) | 71.1–81.8V @ 1mA - Confirmed conduction onset window for design margining |
| Max Clamping Voltage (VC) | 103V @ 5.8A - Upper voltage limit imposed on protected circuit during surge |
| Peak Pulse Current (IPP) | 5.8A - Surge current level at which VC = 103V, defining protection threshold |
| Leakage Current (IR) | <5µA @ 64V - Negligible standby power loss and signal distortion in high-impedance circuits |
| Operating Temperature | -55°C to +150°C - Validated performance across automotive under-hood and industrial control environments |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case rated UL 94V-0, 0.1g mass, matte tin-plated terminals solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (Bi-directional) | Surge current path (symmetrical) | No polarity marking; terminals interchangeable for AC or bidirectional DC protection |
| Cathode Band (N/A) | N/A | Bi-directional variant lacks cathode band; no polarity indicator per datasheet Note 8 |
Key Features
| Feature | Design Value |
|---|---|
| 600W peak pulse power | Enables robust protection against IEC 61000-4-5 Level 4 (4kV/2Ω) surges in compact SMB footprint |
| Glass-passivated die | Ensures long-term parameter stability and low parametric drift under thermal cycling and humidity |
| Bi-directional configuration | Eliminates polarity concerns on AC-coupled interfaces like Ethernet PHYs and RS-485 transceivers |
| RoHS-compliant & halogen-free | Meets IPC-1752A material declaration requirements for green electronics manufacturing |
| Moisture sensitivity Level 1 | Zero bake requirement prior to reflow; compatible with standard SMT assembly processes |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: 24V DC input rail in programmable logic controller (PLC) power entry stage exposed to load dump and inductive switching transients. IC Role / Device Role: Primary overvoltage clamp placed upstream of DC-DC converter input. Use Value: Limits transient excursions to ≤103V, preserving input capacitor voltage rating and preventing MOSFET avalanche failure. |
Use Scenario: CAN FD bus lines (CANH/CANL) in BCM subjected to ISO 16750-2 pulse 5a (load dump) and ESD contact discharge. IC Role / Device Role: Bi-directional TVS pair protecting differential signal integrity without DC bias disruption. Use Value: Symmetric clamping maintains common-mode noise rejection while meeting ISO 10605 30kV air/15kV contact ESD immunity. |
| Power over Ethernet (PoE) PSE Interface | RS-485 Industrial Data Link |
Use Scenario: 48–57V DC power delivery pairs in IEEE 802.3bt Type 4 PSE equipment subject to cable fault surges. IC Role / Device Role: Bidirectional clamp on each power pair (spare pairs or data pairs carrying power). Use Value: Withstands 600W surges while maintaining <5µA leakage at 57V, avoiding false triggering of PoE detection. |
Use Scenario: Termination points of long-haul RS-485 networks in factory automation, exposed to ground potential differences and lightning coupling. IC Role / Device Role: Differential-line TVS mounted at connector interface with 120Ω characteristic impedance match. Use Value: Clamps common-mode transients to <103V without distorting differential signal swing, preserving >12Mbps data integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A-13-F | Unidirectional; 64V VRWM, same clamping (103V @ 5.8A), but conducts only in reverse direction | Requires correct polarity placement; unsuitable for AC or floating differential lines | Select only when protecting unidirectional DC rails where forward conduction must be blocked |
| SAC64C | Same 64V VRWM and bi-directional function, but lower 400W peak power (clamps at 103V @ 3.9A) | Lower surge handling capacity; insufficient for IEC 61000-4-5 Level 4 compliance | Acceptable only for cost-sensitive, low-risk consumer applications with limited surge exposure |
Compared with SMBJ64CA-13-F, the unidirectional SMBJ64A-13-F requires strict polarity alignment and cannot protect AC signals, while SAC64C sacrifices 33% peak power capability-reducing margin against repetitive or high-energy transients in industrial environments.
Availability
SMBJ64CA-13-F is available at Aetrix Electronics and suitable for industrial power supply protection, automotive body control modules, and Power over Ethernet (PoE) PSE interfaces requiring stable component supply and full IEC/ISO compliance support.
Supply support for SMBJ64CA-13-F 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability protection, power management, and signal integrity solutions for industrial, automotive, and computing markets.
The SMBJ series was designed specifically for surface-mount transient suppression in space-constrained, high-surge environments-emphasizing robust clamping, low leakage, and AEC-Q200 readiness for automotive-grade reliability.
FAQ
What is the maximum clamping voltage of SMBJ64CA-13-F at its rated peak pulse current?
The SMBJ64CA-13-F clamps to a maximum of 103V when subjected to its specified peak pulse current of 5.8A (8.3ms half-sine waveform). This value is measured under standardized test conditions per REA 0 waveform and defines the upper voltage bound imposed on protected circuitry during surge events.
Is SMBJ64CA-13-F suitable for protecting RS-485 differential pairs?
Yes-its bi-directional construction allows symmetrical clamping on both signal lines without introducing DC bias or polarity dependency. When placed across the differential pair (line-to-line) or from each line to ground, it maintains signal integrity while suppressing common-mode transients up to 600W, provided layout minimizes parasitic inductance.
How does temperature affect the surge capability of SMBJ64CA-13-F?
Its peak pulse power is derated linearly at 4.8W/°C above +25°C ambient. At +75°C, maximum allowable pulse power drops to 360W (600W − 50°C × 4.8W/°C), reducing peak current handling to approximately 4.4A at 103V clamping-requiring thermal design consideration in enclosed or high-ambient environments.
Does SMBJ64CA-13-F have a cathode marking for polarity identification?
No-per Diodes Incorporated datasheet Note 8, bi-directional variants like SMBJ64CA-13-F omit the cathode band marking. The device has identical electrical behavior in both directions, and terminals are non-polarized; no orientation is required during PCB placement.
SMBJ64CA-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- 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:
- SMB
SMBJ64CA-13-F FAQ
1.How can I place an order for SMBJ64CA-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ64CA-13-F 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 SMBJ64CA-13-F reliable?
The price and inventory of SMBJ64CA-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ64CA-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ64CA-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ64CA-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ64CA-13-F?
SMBJ64CA-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ64CA-13-F 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 SMBJ64CA-13-F?
For technical support, including SMBJ64CA-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ64CA-13-F requirements.
6.How does Aetrix verify that SMBJ64CA-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ64CA-13-F 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 SMBJ64CA-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ64CA-13-F?
All SMBJ64CA-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ64CA-13-F, 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 SMBJ64CA-13-F part is unused and in its original packaging.
Return procedure for SMBJ64CA-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ64CA-13-F Tags
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Diodes Incorporated
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