My Inquiry
My Account
Diodes Incorporated SMAJ9.0CA-13-F
- Part No.:
- SMAJ9.0CA-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ9.0CA-13-F.pdf
- Description:
- TVS DIODE 9VWM 15.4VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:3,892
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ9.0CA-13-F from Diodes Incorporated is a bidirectional 400W transient voltage suppressor (TVS) diode in SMA package, designed for primary overvoltage protection at DC power inputs and signal lines. It features 9.0V reverse standoff voltage, 15.4V max clamping voltage at 26.0A peak pulse current, and 5.0µA max reverse leakage at VRWM - deployed in automotive body control modules, industrial PLC I/O ports, and USB-C power delivery circuits.
For engineers reviewing the SMAJ9.0CA-13-F datasheet, SMAJ9.0CA-13-F pinout, SMAJ9.0CA-13-F application, or SMAJ9.0CA-13-F equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD tolerance, unidirectional/bidirectional polarity match to system grounding scheme, peak pulse current capability under IEC 61000-4-5 surge waveforms, and thermal derating behavior above +25°C ambient.
Technical Context
This TVS operates as a voltage-clamped crowbar device triggered by transient overvoltage exceeding its breakdown threshold (10.0–11.1V). Its glass-passivated junction ensures stable avalanche conduction with sub-nanosecond response time and minimal capacitance (≈100pF at 1MHz, 0V bias), critical for high-speed data line protection without signal integrity degradation.
Designed for single-pulse surge suppression per IEC 61000-4-5 (10/1000µs waveform), it delivers 400W peak pulse power at TA = +25°C, derating linearly to ~250W at +85°C. The bidirectional configuration enables symmetrical clamping on AC-coupled or floating lines without polarity dependency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400W - sustains single 10/1000µs surges up to 26.0A without failure |
| Reverse Standoff Voltage | 9.0V - maximum continuous DC or RMS voltage before significant leakage |
| Breakdown Voltage | 10.0–11.1V @ 1.0mA - defines reliable avalanche initiation threshold |
| Max Clamping Voltage | 15.4V @ 26.0A - upper voltage limit imposed on protected circuit during surge |
| Reverse Leakage | 5.0µA @ 9.0V - negligible standby current; avoids loading sensitive reference rails |
| Package | SMA - surface-mount outline with 4.0–4.6mm body width, compatible with standard reflow profiles |
| Operating Temp | −55°C to +150°C - qualified for under-hood automotive and industrial environments |
Pinout & Package
Two-terminal SMA package: anode and cathode terminals arranged in DO-214AC outline. Cathode band marking is omitted on bidirectional variants; polarity is symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink (bidirectional) | Conducts surge current toward ground or rail during either polarity excursion |
| Cathode | Transient current sink (bidirectional) | Identical function to anode; no functional distinction in C-suffix devices |
Key Features
| Feature | Design Value |
|---|---|
| 400W Peak Pulse Power | Enables robust protection against IEC 61000-4-5 Level 4 (4kV) surges on 12V/24V systems |
| Glass Passivated Junction | Ensures stable breakdown voltage and low leakage across temperature and lifetime |
| Bidirectional Configuration | Eliminates polarity concerns in AC-fed or floating interfaces like RS-485 or CAN FD bus lines |
| RoHS & Halogen-Free | Complies with automotive green standards (AEC-Q101 ready; PPAP-capable manufacturing) |
| Low Clamping Ratio | VC/VRWM = 1.71 - tight voltage margin preserves headroom for downstream 12V-rated ICs |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
Use Scenario: 12V battery-supplied microcontroller I/O lines exposed to load dump and ISO 7637-2 transients. IC Role / Device Role: Primary clamping element placed between connector and ESD diode array. Use Value: Limits transient voltage to ≤15.4V, preventing latch-up or gate oxide damage in 16V-tolerant MCU GPIOs. |
Use Scenario: 24V DC digital input channel receiving signals from field sensors in harsh factory environments. IC Role / Device Role: First-stage surge absorber ahead of optocoupler or Schmitt trigger input stage. Use Value: Absorbs 400W surges without degradation, maintaining ≥10⁶ surge cycles per IEC 61000-4-5. |
| USB-C Power Delivery Port | RS-485 Communication Line |
Use Scenario: VBUS line protection in portable docking stations handling up to 20V/5A PD negotiation. IC Role / Device Role: Bidirectional clamp on CC and VCONN lines to suppress ESD and hot-plug spikes. Use Value: 100pF typical capacitance avoids distortion of 3A/5A PD communication signaling (200kHz–1MHz). |
Use Scenario: Termination point protection on long-haul RS-485 bus segments in building automation networks. IC Role / Device Role: Common-mode surge suppressor across A/B differential pair and ground. Use Value: Symmetrical clamping maintains common-mode rejection ratio (CMRR) >60dB during 1kV surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A-13-F | Unidirectional; same VRWM, VC, and IPP but asymmetric clamping (cathode-to-ground only) | Requires explicit ground-referenced layout; unsuitable for floating or AC-coupled lines | Select only when protecting single-rail DC paths with defined polarity and ground return path |
| SMBJ9.0CA | Same electrical specs but SMB package (larger footprint, 600W rating, higher thermal mass) | Better surge endurance in high-repetition scenarios; requires PCB area increase (~30% larger pad layout) | Prefer for mission-critical systems needing extended surge life or operating >+100°C ambient |
Compared with SMAJ9.0CA-13-F, the unidirectional SMAJ9.0A-13-F offers identical clamping performance but restricts layout flexibility, while SMBJ9.0CA trades compactness for higher reliability margin in thermally demanding deployments.
Availability
SMAJ9.0CA-13-F is available at Aetrix Electronics and suitable for automotive infotainment power rails, industrial sensor interface protection, and USB-C accessory design requiring stable component supply and full traceability.
Supply support for SMAJ9.0CA-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with manufacturing certified to IATF 16949 and AEC-Q101 qualification capabilities.
This device belongs to Diodes' SMAJ series of surface-mount TVS diodes engineered specifically for high-reliability transient suppression in automotive and industrial power and signal lines.
FAQ
What is the difference between SMAJ9.0CA-13-F and SMAJ9.0A-13-F?
SMAJ9.0CA-13-F is bidirectional, providing symmetrical clamping for both positive and negative transients on floating or AC-coupled lines. SMAJ9.0A-13-F is unidirectional, clamping only cathode-to-anode surges and requiring a defined ground reference. Their VRWM, VC, and IPP values are identical, but layout and system grounding requirements differ fundamentally.
Can SMAJ9.0CA-13-F be used for IEC 61000-4-5 compliance testing?
Yes - its 400W peak pulse power, 15.4V clamping voltage at 26.0A, and fast response time meet Level 3 (2kV) and Level 4 (4kV) requirements of IEC 61000-4-5 when applied with appropriate PCB layout (short traces, low-inductance grounding). Derating must be applied above +25°C ambient per Figure 1 in DS19005.
Is this part qualified for automotive use?
SMAJ9.0CA-13-F is built in IATF 16949-certified facilities and meets AEC-Q101 stress test requirements. While not marked "Q" (which denotes formal PPAP submission), its construction, testing, and process controls align with automotive-grade reliability - confirmed by Diodes' published Q101 qualification reports for the SMAJ(C)A family.
What is the thermal resistance junction-to-ambient for this device?
The SMAJ9.0CA-13-F has a typical RθJA of 110°C/W when mounted on a 1-inch² copper pad (2oz Cu, FR-4). This value increases significantly with smaller pads or no thermal relief; Figure 6 in DS19005 shows steady-state power derating versus lead temperature, confirming 1.0W PM(AV) at TL = +75°C.
SMAJ9.0CA-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AC, SMA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 26A
- 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
SMAJ9.0CA-13-F FAQ
1.How can I place an order for SMAJ9.0CA-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ9.0CA-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 SMAJ9.0CA-13-F reliable?
The price and inventory of SMAJ9.0CA-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 SMAJ9.0CA-13-F is usually 5 days.
3.What payment methods are accepted for SMAJ9.0CA-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ9.0CA-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ9.0CA-13-F?
SMAJ9.0CA-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ9.0CA-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 SMAJ9.0CA-13-F?
For technical support, including SMAJ9.0CA-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ9.0CA-13-F requirements.
6.How does Aetrix verify that SMAJ9.0CA-13-F is sourced from the original manufacturer or authorized distributors?
All SMAJ9.0CA-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 SMAJ9.0CA-13-F meets industry standards.
7.What is the process for return or replacement of SMAJ9.0CA-13-F?
All SMAJ9.0CA-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ9.0CA-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 SMAJ9.0CA-13-F part is unused and in its original packaging.
Return procedure for SMAJ9.0CA-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ9.0CA-13-F 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…
