My Inquiry
My Account
Diodes Incorporated SMAJ64CA-13
- Part No.:
- SMAJ64CA-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ64CA-13.pdf
- Description:
- TVS DIODE 64VWM 103VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:9,184
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ64CA-13 from Diodes Incorporated is a 400W bi-directional transient voltage suppressor (TVS) diode in SMA package, 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 range (VBR @ 1mA), 103V max clamping voltage at 3.9A peak pulse current (IPP), and operates from –55°C to +150°C - used in industrial Ethernet port protection and automotive body control module I/O interfaces.
For engineers reviewing the SMAJ64CA-13 datasheet, SMAJ64CA-13 pinout, SMAJ64CA-13 application, or SMAJ64CA-13 equivalent, key selection criteria include clamping voltage margin vs. system rail, unidirectional/bi-directional polarity requirement, 400W peak pulse power handling under 8.3ms waveform, and RoHS-compliant matte tin termination compatibility with lead-free reflow.
Technical Context
This bi-directional TVS diode uses glass-passivated junction construction for stable breakdown characteristics and fast response (<1ps). Its symmetrical I-V curve enables bidirectional clamping without polarity dependency, making it suitable for AC-coupled or floating signal paths such as RS-485 differential pairs and USB D+/D– lines.
The device complies with IEC 61000-4-2 (±15kV air, ±8kV contact) and IEC 61000-4-4 (EFT) standards when properly laid out. Thermal derating follows JEDEC-defined 8.3ms half-sine pulse profile, with peak power reduced linearly above 25°C ambient per Fig. 1 in DS19005 Rev. 12–2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W - sustains single 8.3ms half-sine surge up to 3.9A without failure |
| Reverse Standoff Voltage | 64 V - maximum continuous DC or RMS voltage before significant leakage |
| Breakdown Voltage | 71.1–78.6 V @ 1mA - defines clamping onset threshold under transient stress |
| Max Clamping Voltage | 103 V @ 3.9A IPP - limits voltage seen by downstream ICs during surge event |
| Leakage Current | 5.0 µA @ 64V - ensures minimal standby power loss in battery-powered systems |
| Operating Temperature | –55°C to +150°C - supports under-hood automotive and industrial control environments |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case with UL 94V-0 flammability rating and cathode band omitted (bi-directional).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bi-directional surge path | No polarity marking; either terminal serves as input/output for transient energy |
| Case / Body | Thermal conduction path | Plastic body transfers heat to PCB copper; no electrical connection |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over temperature and lifetime, minimizing parameter drift in harsh environments |
| 400W peak pulse rating | Handles high-energy surges common in 12V/24V automotive load-dump and industrial motor drive noise |
| RoHS-compliant matte tin plating | Enables compatibility with Pb-free reflow profiles (peak 260°C) without solder joint reliability risk |
| Low clamping ratio (VC/VBR ≈ 1.37) | Provides tight voltage limiting margin relative to breakdown, improving protected IC survival rate |
Applications
| Industrial Ethernet Port Protection | Automotive Body Control Module I/O |
|---|---|
Use Scenario: Protects RS-485 transceivers against ESD and lightning-induced surges on factory floor networks. IC Role / Device Role / Timing Role: Bi-directional clamping element placed between differential pair and transceiver pins. Use Value: Limits transient voltage to ≤103V, preventing latch-up or gate oxide damage in 3.3V/5V transceivers. |
Use Scenario: Shields LIN bus and sensor inputs in door modules exposed to load dump and jump-start transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12V supply rail and signal lines feeding microcontroller GPIOs. Use Value: Withstands 400W pulses while maintaining <5µA leakage at 64V, preserving sleep-mode current budget. |
| USB 2.0 Data Line Protection | DC Power Input Surge Suppression |
Use Scenario: Safeguards USB PHY from human-body-model ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Low-capacitance (≈25pF) bi-directional TVS placed directly at USB connector pins. Use Value: Sub-100ps response time clamps ±15kV ESD pulses before signal integrity degrades beyond USB 2.0 eye mask. |
Use Scenario: Guards 24V DC input of programmable logic controllers against induced surges from nearby relay switching. IC Role / Device Role / Timing Role: First-line transient absorber upstream of bulk capacitor and DC-DC converter input stage. Use Value: 103V clamping prevents overvoltage trip in 24V-rated regulators and maintains system uptime during field surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CA-13 | Same VRWM/VBR/VC specs but SMB package (higher thermal mass, 600W PPK) | Better suited for higher-energy surges; requires larger PCB footprint | Select when surge energy exceeds 400W or board layout allows SMB size |
| SMCJ64CA-13 | Same electrical specs, SMC package (1500W PPK, lower thermal resistance) | Used where sustained surge repetition or elevated ambient temperatures exist | Choose for automotive engine bay or outdoor industrial enclosures >85°C ambient |
Compared with SMBJ64CA-13 and SMCJ64CA-13, SMAJ64CA-13 offers optimal space efficiency for compact designs where 400W surge immunity suffices - balancing PCB area, cost, and thermal performance without over-engineering.
Availability
SMAJ64CA-13 is available at Aetrix Electronics and suitable for industrial Ethernet port protection, automotive body control module I/O, USB 2.0 data line protection, and DC power input surge suppression requiring stable component supply across production lifecycles.
Supply support for SMAJ64CA-13 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 North America.
SMAJ series TVS diodes are part of Diodes' circuit protection portfolio, engineered specifically for robust, low-cost transient suppression in space-constrained industrial and automotive applications using standardized surface-mount packages.
FAQ
What is the polarity configuration of SMAJ64CA-13?
SMAJ64CA-13 is a bi-directional TVS diode, meaning it has symmetrical clamping behavior across both polarities and no cathode band marking. It functions identically regardless of voltage polarity applied - ideal for AC signals, differential buses, or floating grounds where direction of transient is unpredictable.
Can SMAJ64CA-13 be used in place of a unidirectional TVS like SMAJ64A-13?
No - SMAJ64CA-13 cannot replace SMAJ64A-13 in circuits requiring DC bias or polarity-sensitive clamping, such as positive-rail-only protection. The unidirectional version blocks reverse current until breakdown, while the bi-directional version conducts equally in both directions, potentially disrupting DC operating points if substituted without layout review.
What is the typical junction capacitance of SMAJ64CA-13 at 0V?
Typical junction capacitance is 25 pF at 0V bias, as shown in Figure 2 of DS19005 Rev. 12–2. This value increases slightly with decreasing reverse voltage and remains well below 50 pF across its operating range - suitable for USB 2.0 (480 Mbps) and RS-485 (10 Mbps) without signal integrity degradation.
Does SMAJ64CA-13 meet automotive AEC-Q200 requirements?
No - SMAJ64CA-13 is not AEC-Q200 qualified. For automotive-grade applications, Diodes Incorporated offers the AEC-Q200-qualified P6SMBJ64CA series in SMB package. SMAJ64CA-13 is rated for industrial temperature range (–55°C to +150°C) but lacks the stress test validation required for automotive qualification.
SMAJ64CA-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AC, SMA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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 FAQ
1.How can I place an order for SMAJ64CA-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ64CA-13 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 reliable?
The price and inventory of SMAJ64CA-13 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 is usually 5 days.
3.What payment methods are accepted for SMAJ64CA-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ64CA-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ64CA-13?
SMAJ64CA-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ64CA-13 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?
For technical support, including SMAJ64CA-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ64CA-13 requirements.
6.How does Aetrix verify that SMAJ64CA-13 is sourced from the original manufacturer or authorized distributors?
All SMAJ64CA-13 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 meets industry standards.
7.What is the process for return or replacement of SMAJ64CA-13?
All SMAJ64CA-13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ64CA-13, 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 part is unused and in its original packaging.
Return procedure for SMAJ64CA-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ64CA-13 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
