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Diodes Incorporated SMAJ64CA-13-F
- Part No.:
- SMAJ64CA-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ64CA-13-F.pdf
- Description:
- TVS DIODE 64VWM 103VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:2,810
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Product details
Overview
SMAJ64CA-13-F from Diodes Incorporated is a bidirectional 400W surface-mount transient voltage suppressor (TVS) diode designed for clamping ESD and surge transients on data lines and power rails. It features a 64V reverse standoff voltage (VRWM), 71.1–78.6V breakdown voltage (VBR), 103V maximum clamping voltage (VC) at 3.9A peak pulse current (IPP), and operates across –55°C to +150°C. It is used in automotive infotainment power inputs and industrial Ethernet PHY protection.
For engineers reviewing the SMAJ64CA-13-F datasheet, SMAJ64CA-13-F pinout, SMAJ64CA-13-F application, or SMAJ64CA-13-F equivalent, key selection criteria include clamping voltage margin vs. protected IC's absolute maximum rating, unidirectional/bidirectional polarity match, IEC 61000-4-2/4-5 compliance headroom, thermal derating above +25°C ambient, and SMA package solder joint reliability under thermal cycling.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical clamping behavior during positive and negative transients. Its glass-passivated junction ensures stable VBR and low leakage (<5µA at VRWM), while the SMA package enables high-current pulse handling within tight board space constraints.
The device responds in <1ps to fast-rising ESD events and sustains 400W non-repetitive peak pulse power per the 10/1000µs waveform. Thermal performance is defined by a 1.0W steady-state power dissipation limit at TL = +75°C and full derating above that temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400W - Sustains single 10/1000µs surges up to this level without failure |
| Reverse Standoff Voltage (VRWM) | 64V - Maximum continuous DC or RMS voltage before significant leakage begins |
| Breakdown Voltage (VBR) | 71.1–78.6V @ 1mA - Confirmed avalanche onset range; defines minimum clamping threshold |
| Max Clamping Voltage (VC) | 103V @ IPP = 3.9A - Upper voltage limit seen by downstream circuit during rated surge |
| Peak Pulse Current (IPP) | 3.9A - Maximum transient current the device safely shunts at VC = 103V |
| Operating Temperature | –55°C to +150°C - Validated junction temperature range for automotive and industrial deployment |
| Package | SMA - Surface-mount outline with 4.0–4.6mm body length, 2.29–2.92mm width, and cathode-band-free bidirectional marking |
Pinout & Package
Package: SMA (Surface Mount Axial), molded plastic case per UL 94V-0, 0.064g mass, moisture sensitivity level 1 (J-STD-020). Bidirectional construction eliminates polarity marking; terminals are symmetrical anode/cathode pairs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 / Cathode 1 | Transient conduction path (Terminal A) | One end of bidirectional PN junction; conducts during negative transients relative to Terminal B |
| Anode 2 / Cathode 2 | Transient conduction path (Terminal B) | Opposite end of same junction; conducts during positive transients relative to Terminal A |
Key Features
| Feature | Design Value |
|---|---|
| 400W peak pulse power | Enables robust protection against IEC 61000-4-5 Level 4 (4kV/2Ω) surges on 12V/24V rails |
| Glass-passivated die | Ensures stable VBR over lifetime and resistance to humidity-induced parameter drift |
| Bidirectional symmetry | Eliminates orientation concerns during placement; supports AC-coupled or floating signal lines |
| RoHS-compliant & halogen-free | Fulfills automotive ELV and JEDEC J-STD-709 chemical compliance requirements |
| Fast response time (<1ps) | Clamps ESD events (IEC 61000-4-2 ±8kV contact) before protected ICs experience overstress |
Applications
| Automotive Infotainment Power Input | Industrial Ethernet PHY Interface |
|---|---|
Use Scenario: 12V supply rail feeding head unit MCU and display driver ICs exposed to load dump and jump-start transients. IC Role / Device Role: Primary clamping element placed upstream of DC-DC converter input. Use Value: Limits voltage to ≤103V during 3.9A surge, staying below 120V absolute max rating of downstream regulators. |
Use Scenario: Protection of RJ45 magnetics center taps and PHY differential pairs in factory automation gateways. IC Role / Device Role: Common-mode surge clamp on isolated Ethernet power and data lines. Use Value: Symmetric clamping preserves signal integrity on bidirectional differential lanes without polarity dependency. |
| Smart Meter AC/DC Power Supply | POS Terminal USB-C Power Delivery Line |
Use Scenario: Secondary-side 24V output rail of metering power supply subjected to lightning-induced surges on utility-connected lines. IC Role / Device Role: Final-stage overvoltage clamp before microcontroller and RTC backup circuitry. Use Value: Withstands 400W pulses while maintaining VRWM = 64V margin above nominal 24V output. |
Use Scenario: VBUS line protection in retail POS terminals supporting USB-C PD up to 20V. IC Role / Device Role: Bidirectional clamp between PD controller and connector to absorb hot-plug and fault transients. Use Value: 103V clamping ensures safe operation even during 20V PD negotiation with ±10% tolerance and overshoot. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64A-13-F | Unidirectional; includes cathode band marking; identical VRWM/VBR/VC/IPP specs | Requires correct PCB polarity alignment; unsuitable for AC or floating nodes | Select only when protecting DC rails with fixed polarity and no risk of reverse bias |
| SMBJ64CA | Same electrical specs but SMB package (larger footprint, higher PPK = 600W) | Higher surge margin but occupies ~2.5× PCB area; requires re-layout | Choose when system-level surge testing exceeds 400W or thermal mass must be increased |
Compared with SMAJ64CA-13-F, the unidirectional SMAJ64A-13-F demands strict polarity control but offers identical protection performance, while SMBJ64CA trades compactness for 50% higher surge capacity-critical for legacy designs migrating from SMA to SMB footprints.
Availability
SMAJ64CA-13-F is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial Ethernet gateways, smart meter power supplies, and POS terminal USB-C PD interfaces requiring stable component supply across extended product lifecycles.
Supply support for SMAJ64CA-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
This device belongs to Diodes' SMAJ series of surface-mount TVS diodes, engineered specifically for high-reliability transient suppression in automotive, industrial, and communications equipment where space, thermal performance, and AEC-Q200 readiness are critical.
FAQ
What is the polarity configuration of SMAJ64CA-13-F?
SMAJ64CA-13-F is a bidirectional TVS diode, meaning it functions identically for both positive and negative voltage transients. Unlike unidirectional variants (e.g., SMAJ64A-13-F), it has no cathode band and can be mounted without orientation concern-ideal for AC-coupled or floating signal paths.
Does SMAJ64CA-13-F meet AEC-Q200 requirements?
No-SMAJ64CA-13-F is the standard industrial-grade version. Diodes offers an automotive-qualified variant, SMAJ64CAQ-13-F, which is AEC-Q200 qualified, PPAP-capable, and manufactured in IATF 16949-certified facilities. That part uses the same electrical specs but undergoes additional stress testing and process controls.
How does thermal derating affect its 400W rating?
The 400W peak pulse power applies only at TA = +25°C. Above that, power must be linearly derated: Fig. 1 shows ~80% derating at +75°C ambient and ~50% at +125°C. For reliable operation, ensure PCB copper area and airflow maintain junction temperature below +150°C during surge events.
Can SMAJ64CA-13-F replace SMAJ64A-13-F on the same PCB?
Yes, electrically and mechanically-both use the SMA package and share identical VRWM, VBR, VC, and IPP values. However, SMAJ64CA-13-F lacks a cathode band and is bidirectional, so it will function correctly regardless of orientation, whereas SMAJ64A-13-F must be placed with correct polarity to avoid forward conduction during normal operation.
SMAJ64CA-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AC, SMA
- Series:
- SMAJ
- 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):
- 3.9A
- Power - Peak Pulse:
- 400W
- 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:
- SMA
SMAJ64CA-13-F FAQ
1.How can I place an order for SMAJ64CA-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ64CA-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 SMAJ64CA-13-F reliable?
The price and inventory of SMAJ64CA-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 SMAJ64CA-13-F is usually 5 days.
3.What payment methods are accepted for SMAJ64CA-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ64CA-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ64CA-13-F?
SMAJ64CA-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ64CA-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 SMAJ64CA-13-F?
For technical support, including SMAJ64CA-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ64CA-13-F requirements.
6.How does Aetrix verify that SMAJ64CA-13-F is sourced from the original manufacturer or authorized distributors?
All SMAJ64CA-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 SMAJ64CA-13-F meets industry standards.
7.What is the process for return or replacement of SMAJ64CA-13-F?
All SMAJ64CA-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ64CA-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 SMAJ64CA-13-F part is unused and in its original packaging.
Return procedure for SMAJ64CA-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ64CA-13-F Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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