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Diodes Incorporated P6SMAJ18ADFQ-13
- Part No.:
- P6SMAJ18ADFQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
P6SMAJ18ADFQ-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR D-F
- Quantity:
- Payment:
- Shipping:
Inventory:8,497
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Product details
Overview
P6SMAJ18ADFQ-13 from Diodes Incorporated is an AEC-Q101 qualified 600W surface-mount transient voltage suppressor (TVS) diode in D-FLAT package, designed for automotive power line protection. It features a 18V reverse standoff voltage, 20.0–23.3V breakdown range at 1mA, 29.2V max clamping voltage at 20.5A peak pulse current, and is optimized for ESD and surge immunity in 12V/24V vehicle subsystems.
For engineers reviewing the P6SMAJ18ADFQ-13 datasheet, P6SMAJ18ADFQ-13 pinout, P6SMAJ18ADFQ-13 application, or P6SMAJ18ADFQ-13 equivalent, this TVS diode supports critical design tasks including ISO 7637-2 pulse suppression, CAN/LIN bus line protection, and battery rail overvoltage clamping in IATF16949-certified production environments.
Technical Context
This unidirectional TVS diode operates as a fast-acting shunt clamp during transient events, with sub-nanosecond response time and glass-passivated junction construction ensuring stable VBR and low leakage (<1µA @ 18V). Its low-profile D-FLAT package enables high-density placement near connectors and ECUs while maintaining thermal resistance of 57°C/W (junction-to-terminal) on compact 0.4" × 0.5" PCB pads.
The device complies with AEC-Q101 stress testing for automotive reliability and delivers 600W non-repetitive peak pulse power under 10/1000µs waveform conditions. Its 3.5V forward voltage at 35A surge ensures minimal conduction loss during forward-mode transients, and its halogen- and antimony-free "Green" construction meets RoHS 3 and IATF16949 manufacturing requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - sustains single 10/1000µs surges up to 20.5A without failure |
| Reverse Standoff Voltage | 18V - defines maximum continuous DC operating voltage before clamping initiates |
| Breakdown Voltage Range | 20.0–23.3V @ 1mA - ensures reliable turn-on margin above 18V rail with tight process control |
| Max Clamping Voltage | 29.2V @ 20.5A - limits downstream IC voltage stress during ISO 7637-2 Pulse 1/2a/5a events |
| Leakage Current | ≤1.0µA @ 18V - prevents excessive quiescent drain in always-on automotive modules |
| Package | D-FLAT - 4.65mm × 2.80mm footprint with cathode band polarity marking and 0.035g mass |
Pinout & Package
Package: D-FLAT surface-mount package with molded plastic case (UL 94V-0), matte tin annealed copper lead-frame terminals, and cathode band polarity indicator. Dimensions: 4.65mm × 2.80mm × 1.10mm (L × W × H), weight ≈0.035g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Transient Clamp Output | Connected to protected line (e.g., CAN_H); sinks surge current to ground when VREV > VBR |
| 2 (Anode) | Reference / Ground Return | Typically tied to chassis or system ground; completes clamping path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use with PPAP capability and IATF16949 manufacturing traceability |
| Glass-passivated die | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| Low-profile D-FLAT package | Reduces board space by >40% vs. SMA packages while enabling automated optical inspection (AOI) |
| RoHS 3 & "Green" compliance | Contains <900ppm Br, <900ppm Cl, <1000ppm Sb - meets global environmental and OEM chemical restrictions |
Applications
| Infotainment Power Rail Protection | Body Control Module (BCM) Input Protection |
|---|---|
Use Scenario: Protecting 12V supply inputs to head unit MCUs and audio amplifiers against load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VIN and GND, clamping transients within 1ns to limit voltage to ≤29.2V. Use Value: Prevents latch-up or permanent damage to 3.3V/5V LDOs and microcontrollers during ISO 7637-2 Pulse 5a (75V/300ms). | Use Scenario: Safeguarding LIN bus transceivers and sensor interfaces in door modules and lighting controllers. IC Role / Device Role / Timing Role: Bidirectional protection not required; unidirectional clamp suppresses negative transients on 12V bias lines feeding LIN PHYs. Use Value: Maintains signal integrity by limiting voltage excursions to <29.2V, preserving LIN differential swing and avoiding false wake-up triggers. |
| Engine Control Unit (ECU) Sensor Inputs | ADAS Camera Power Line Protection |
Use Scenario: Shielding analog sensor inputs (e.g., MAP, O2, coolant temp) from coupled ignition noise and alternator ripple. IC Role / Device Role / Timing Role: Low-leakage (≤1µA) TVS placed upstream of precision op-amp front-ends to avoid DC offset errors. Use Value: Enables stable 16-bit ADC readings by suppressing >100V transients without adding measurable input bias current. | Use Scenario: Protecting 12V power feeds to 77GHz radar and surround-view camera modules exposed to ESD and conducted RF. IC Role / Device Role / Timing Role: Fast-response (sub-ns) clamp integrated into camera flex PCB near connector to minimize inductance in surge path. Use Value: Ensures uninterrupted video streaming by preventing reset or brown-out during ±8kV contact ESD per ISO 10605. |
Availability
P6SMAJ18ADFQ-13 is available at Aetrix Electronics and suitable for automotive infotainment systems, body control modules, engine control units, and ADAS camera power rails requiring stable component supply with full AEC-Q101 traceability and IATF16949 manufacturing assurance.
Supply support for P6SMAJ18ADFQ-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, specializing in high-reliability components for automotive, industrial, and computing applications with over 50 years of power management expertise.
The P6SMAJ series belongs to Diodes' automotive-grade TVS portfolio, engineered specifically for robust transient suppression in 12V/24V vehicle electrical architectures under ISO 7637-2 and ISO 16750-2 stress conditions.
FAQ
What is the maximum clamping voltage of P6SMAJ18ADFQ-13 and under what test condition?
The maximum clamping voltage is 29.2V, measured at a peak pulse current (IPP) of 20.5A using the standardized 10/1000µs double-exponential waveform per IEC 61000-4-5. This value guarantees that protected circuitry remains below critical voltage thresholds during automotive load-dump events.
Is P6SMAJ18ADFQ-13 suitable for bidirectional transient suppression?
No - P6SMAJ18ADFQ-13 is a unidirectional TVS diode intended for DC-biased lines like 12V power rails. For bidirectional protection (e.g., data lines such as CAN or USB), a symmetric device like the D3V3M1U2LP-7 is required; this part clamps only in reverse direction relative to its marked cathode.
How does the D-FLAT package improve thermal performance compared to SMA?
The D-FLAT package provides lower thermal resistance (57°C/W junction-to-terminal) due to its flat, wide copper lead-frame structure and direct thermal path to PCB copper. Unlike SMA's gull-wing leads, D-FLAT's bottom-terminated design allows solder reflow to form a large-area thermal interface, improving power dissipation by ~25% at equivalent board area.
What automotive standards does P6SMAJ18ADFQ-13 comply with?
P6SMAJ18ADFQ-13 is AEC-Q101 qualified, manufactured in IATF16949:2016 certified facilities, and supports PPAP documentation. It meets ISO 7637-2 (Pulse 1, 2a, 3a/b, 5a) and ISO 16750-2 transient immunity requirements for 12V systems, with validated performance across –55°C to +150°C operating temperature range.
P6SMAJ18ADFQ-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 2-SMD, Flat Leads
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 18V
- Voltage - Breakdown (Min):
- 20V
- Voltage - Clamping (Max) @ Ipp:
- 29.2V
- Current - Peak Pulse (10/1000µs):
- 20.5A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D-Flat
P6SMAJ18ADFQ-13 FAQ
1.How can I place an order for P6SMAJ18ADFQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMAJ18ADFQ-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 P6SMAJ18ADFQ-13 reliable?
The price and inventory of P6SMAJ18ADFQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMAJ18ADFQ-13 is usually 5 days.
3.What payment methods are accepted for P6SMAJ18ADFQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMAJ18ADFQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMAJ18ADFQ-13?
P6SMAJ18ADFQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMAJ18ADFQ-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 P6SMAJ18ADFQ-13?
For technical support, including P6SMAJ18ADFQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMAJ18ADFQ-13 requirements.
6.How does Aetrix verify that P6SMAJ18ADFQ-13 is sourced from the original manufacturer or authorized distributors?
All P6SMAJ18ADFQ-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 P6SMAJ18ADFQ-13 meets industry standards.
7.What is the process for return or replacement of P6SMAJ18ADFQ-13?
All P6SMAJ18ADFQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMAJ18ADFQ-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 P6SMAJ18ADFQ-13 part is unused and in its original packaging.
Return procedure for P6SMAJ18ADFQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMAJ18ADFQ-13 Tags
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ESD9B5.0ST5G
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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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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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