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Diodes Incorporated SMAJ100CA-13-F
- Part No.:
- SMAJ100CA-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ100CA-13-F.pdf
- Description:
- TVS DIODE 100VWM 162VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:6,193
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Product details
Overview
SMAJ100CA-13-F from Diodes Incorporated is a bidirectional 400W surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in DC power lines and signal interfaces. It features a 100V reverse standoff voltage (VRWM), 111–123V breakdown range (VBR), 162V maximum clamping voltage (VC) at 2.5A peak pulse current, and operates across –55°C to +150°C. It is used in automotive infotainment power rails to suppress load dump and ISO 7637-2 transients.
For engineers reviewing the SMAJ100CA-13-F datasheet, SMAJ100CA-13-F pinout, SMAJ100CA-13-F application, or SMAJ100CA-13-F equivalent, key selection criteria include clamping voltage margin relative to protected IC VCC, unidirectional vs. bidirectional polarity requirements, IEC 61000-4-2/4-5 compliance readiness, thermal derating above +25°C ambient, and compatibility with SMA package reflow profiles.
Technical Context
This TVS device employs a glass-passivated silicon junction optimized for fast response (<1 ns) to ESD and surge events. Its bidirectional configuration enables symmetric clamping on AC-coupled or floating lines without polarity constraints.
It delivers 400W non-repetitive peak pulse power (8.3 ms half-sine) with 1.0W steady-state dissipation at TL = +75°C. Clamping performance is specified at IPP = 2.5A, with IR ≤ 5.0 µA at VRWM = 100V - critical for low-leakage sensor or communication bus protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W - sustains single 8.3 ms surges up to this level without failure |
| Reverse Standoff Voltage | 100 V - maximum continuous DC or RMS voltage before significant leakage |
| Breakdown Voltage Range | 111–123 V - guaranteed conduction onset window under 1.0 mA test current |
| Max Clamping Voltage | 162 V @ 2.5 A - upper limit of voltage seen by downstream circuit during rated surge |
| Leakage Current | ≤5.0 µA @ 100 V - ensures minimal loading on high-impedance analog or sensor inputs |
| Operating Temperature | –55°C to +150°C - supports under-hood automotive and industrial environments |
| Package | SMA (DO-214AC) - standard SMT footprint compatible with IPC-7351B land pattern |
Pinout & Package
The SMAJ100CA-13-F uses the SMA (DO-214AC) surface-mount package: molded plastic case (UL 94V-0), cathode band omitted due to bidirectional construction, and matte tin-plated terminals solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Identical terminals; bidirectional clamping allows connection across any two points without polarity concern |
| Case | Non-electrical mechanical interface | No internal connection; serves only as thermal and mechanical anchor for PCB mounting |
Key Features
| Feature | Design Value |
|---|---|
| 400W Peak Pulse Power | Enables protection against severe ISO 7637-2 Pulse 5a (load dump) in 12V automotive systems |
| Glass Passivated Die | Improves long-term reliability and moisture resistance versus epoxy-passivated alternatives |
| Bidirectional Configuration | Eliminates need for polarity-aware layout in AC-coupled interfaces like RS-485 or CAN FD physical layer |
| RoHS & Halogen-Free Compliance | Meets automotive and industrial environmental mandates without compromising surge rating |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting microcontroller power supply pins in vehicle body control modules exposed to load dump transients. IC Role / Device Role: Primary clamping element placed between battery rail and LDO input. Use Value: Limits voltage excursion to ≤162V during 12V system load dump, preventing LDO overvoltage failure. | Use Scenario: Shielding 4–20 mA current loop transmitter outputs from field-induced surges in factory automation. IC Role / Device Role: Bidirectional shunt clamp across loop terminals. Use Value: Maintains loop integrity during 1 kV/50 Ω surge events while adding <1.5 pF capacitance at 1 MHz. |
| USB Type-C Port ESD Protection | DC Motor Drive Feedback Line |
Use Scenario: Secondary-level ESD protection on USB-C CC and VCONN lines in docking stations. IC Role / Device Role: Low-capacitance bidirectional clamp adjacent to connector. Use Value: Provides IEC 61000-4-2 ±15 kV contact discharge immunity without distorting high-speed signaling. | Use Scenario: Safeguarding hall-effect sensor signals from commutation noise in BLDC motor controllers. IC Role / Device Role: Localized transient suppression at sensor PCB entry point. Use Value: Clamps inductive kickback spikes to <162V, preserving signal fidelity and ADC reference stability. |
Availability
SMAJ100CA-13-F is available at Aetrix Electronics and suitable for automotive infotainment power rails, industrial 4–20 mA transmitters, USB-C port hardening, and BLDC motor feedback line protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SMAJ100CA-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 automotive, industrial, and consumer markets.
The SMAJ series targets board-level transient suppression in harsh environments, with design focus on automotive-grade surge resilience (ISO 7637-2), low-leakage operation, and standardized SMT packaging for automated assembly.
FAQ
What is the difference between SMAJ100A and SMAJ100CA?
SMAJ100A is unidirectional, with a cathode band indicating polarity and clamping only in reverse bias. SMAJ100CA is bidirectional - it lacks a polarity indicator and clamps symmetrically in both directions, making it suitable for AC or floating signal lines where voltage polarity may reverse.
Can SMAJ100CA-13-F be used in place of SMAJ100A-13-F?
Only if the circuit requires bidirectional clamping and has no polarity-sensitive components. Substituting SMAJ100CA for SMAJ100A introduces symmetrical conduction - acceptable for differential buses or AC-coupled paths but potentially problematic in DC power rails where forward conduction could short the supply during fault conditions.
What is the thermal resistance junction-to-lead (RθJL) for this device?
RθJL is not explicitly published in DS19005 Rev. 19–2, but the datasheet specifies PM(AV) = 1.0 W at TL = +75°C. Using the standard thermal model, RθJL ≈ (TJmax − TL)/PM(AV) = (150°C − 75°C)/1.0 W = 75°C/W - consistent with typical SMA-packaged TVS diodes.
Does this part meet AEC-Q101 qualification?
No - SMAJ100CA-13-F is the standard industrial version. The automotive-qualified variant is SMAJ100CAQ-13-F, which undergoes AEC-Q101 stress testing, PPAP documentation, and is manufactured in IATF 16949-certified facilities. The "Q" suffix denotes automotive compliance.
SMAJ100CA-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):
- 100V
- Voltage - Breakdown (Min):
- 111V
- Voltage - Clamping (Max) @ Ipp:
- 162V
- Current - Peak Pulse (10/1000µs):
- 2.5A
- 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
SMAJ100CA-13-F FAQ
1.How can I place an order for SMAJ100CA-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ100CA-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 SMAJ100CA-13-F reliable?
The price and inventory of SMAJ100CA-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 SMAJ100CA-13-F is usually 5 days.
3.What payment methods are accepted for SMAJ100CA-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ100CA-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ100CA-13-F?
SMAJ100CA-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ100CA-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 SMAJ100CA-13-F?
For technical support, including SMAJ100CA-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ100CA-13-F requirements.
6.How does Aetrix verify that SMAJ100CA-13-F is sourced from the original manufacturer or authorized distributors?
All SMAJ100CA-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 SMAJ100CA-13-F meets industry standards.
7.What is the process for return or replacement of SMAJ100CA-13-F?
All SMAJ100CA-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ100CA-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 SMAJ100CA-13-F part is unused and in its original packaging.
Return procedure for SMAJ100CA-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ100CA-13-F Tags
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