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Diodes Incorporated P6SMAJ28ADFQ-13
- Part No.:
- P6SMAJ28ADFQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
P6SMAJ28ADFQ-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR D-F
- Quantity:
- Payment:
- Shipping:
Inventory:3,656
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Product details
Overview
P6SMAJ28ADFQ-13 from Diodes Incorporated is an AEC-Q101 qualified, 600W surface-mount transient voltage suppressor (TVS) diode in the D-FLAT package, featuring a 28V reverse standoff voltage, 31.1–35.8V breakdown range at 1mA, 45.4V max clamping voltage at 13.2A peak pulse current, and automotive-grade reliability for power line surge protection.
For engineers reviewing the P6SMAJ28ADFQ-13 datasheet, P6SMAJ28ADFQ-13 pinout, P6SMAJ28ADFQ-13 application, or P6SMAJ28ADFQ-13 equivalent, this TVS diode is selected for robust overvoltage protection in automotive ECUs, industrial power supplies, and DC bus interfaces where fast response (<1 ns), low clamping ratio (1.62×VRWM), and IATF16949-certified manufacturing are required.
Technical Context
This unidirectional TVS diode operates as a shunt-type surge protector, conducting when reverse voltage exceeds its breakdown threshold to clamp transients within nanoseconds. Its glass-passivated junction ensures stable VBR tolerance and long-term reliability under repeated surge stress.
The device uses a low-inductance D-FLAT package with cathode band polarity marking and is rated for -55°C to +150°C operation. Thermal resistance is 57°C/W (junction-to-terminal) on a 0.4" × 0.5" PCB pad, enabling effective power dissipation during 10/1000µs waveform surges up to 600W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - Sustains single 10/1000µs transients without failure under defined thermal conditions. |
| Reverse Standoff Voltage (VRWM) | 28V - Maximum continuous DC or RMS voltage before significant leakage; defines operating margin below clamping. |
| Breakdown Voltage (VBR) | 31.1–35.8V @ 1mA - Confirmed conduction onset range; ensures predictable turn-on above system nominal voltage. |
| Max Clamping Voltage (VC) | 45.4V @ 13.2A - Upper voltage limit during surge; determines protected circuit's maximum stress level. |
| Peak Pulse Current (IPP) | 13.2A - Maximum non-repetitive surge current the device can safely divert at VC. |
| Junction Temperature Range | -55°C to +150°C - Supports under-hood automotive and industrial environments without derating. |
| Package | D-FLAT - Low-profile (1.1mm max height), surface-mount package with 2.25–2.95mm width and 3.95–4.60mm length. |
Pinout & Package
The P6SMAJ28ADFQ-13 is a two-terminal unidirectional TVS diode in the D-FLAT package. Polarity is marked by a cathode band; Terminal 1 is cathode, Terminal 2 is anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 (Cathode) | Surge Return Path | Connected to ground or low-impedance return path; carries full IPP during clamping event. |
| Terminal 2 (Anode) | Protected Line Input | Connected to the line being protected (e.g., 24V rail); reverse-biased during normal operation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive use with PPAP capability and IATF16949 manufacturing-enables direct integration into Tier-1 ECU designs. |
| 600W Peak Pulse Rating | Handles high-energy transients per ISO 7637-2 Pulse 1/2a/5a without degradation-reduces need for cascaded protection stages. |
| Low Clamping Ratio (VC/VRWM = 1.62) | Minimizes overvoltage stress on downstream ICs like CAN transceivers or microcontrollers during surge events. |
| Glass-Passivated Junction | Ensures stable VBR and low leakage (<1µA @ VRWM) across temperature and lifetime-critical for always-on automotive modules. |
| D-FLAT Package | 0.035g weight and 1.1mm profile enable compact placement near connectors or power entry points without board warpage risk. |
Applications
| Automotive Body Control Module (BCM) | Industrial 24V PLC I/O Channel |
|---|---|
Use Scenario: Protects LIN/CAN bus power rails and sensor inputs against load dump and inductive switching spikes in vehicle body electronics. IC Role / Device Role / Timing Role: Shunt TVS diode placed between 24V supply and chassis ground, activated within <1 ns upon exceeding 31.1V. Use Value: Limits transient voltage to ≤45.4V, preventing latch-up or damage to 3.3V/5V MCU power domains and transceiver ICs. | Use Scenario: Safeguards digital input circuits in programmable logic controllers exposed to field-wiring surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24V DC input terminals, coordinated with upstream fuse and downstream RC filter. Use Value: Absorbs 13.2A pulses without degradation, maintaining signal integrity and eliminating false triggering of optocoupled inputs. |
| Automotive ADAS Camera Power Supply | Telecom Remote Radio Unit (RRU) DC Feed |
Use Scenario: Shields 12V camera module power input from battery line transients during engine cranking and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed directly at connector entry point, with minimal trace inductance to preserve clamping speed. Use Value: Enables compliance with ISO 16750-2 Class IV (120V/50ms) testing while occupying <2.5 mm² PCB area. | Use Scenario: Protects 48V DC power feed to outdoor base station radios from lightning-induced surges on tower-mounted cabling. IC Role / Device Role / Timing Role: First-stage clamping device on DC input before DC-DC converter, sized for 600W single-event handling. Use Value: Reduces need for bulkier MOV-based solutions, supporting compact RRU form factor and extended MTBF in harsh environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ28A-Q | Same 28V VRWM and 45.4V VC, but not AEC-Q101 qualified; RoHS-compliant but no PPAP support. | Limited to commercial/industrial use; unsuitable for automotive production programs requiring change control. | Select when cost sensitivity outweighs automotive qualification requirements and supply chain traceability is not mandated. |
| 1.5SMC28A | Higher 1500W rating, DO-214AB package (larger footprint), 43.3V VC at 34.7A IPP-less precise clamping ratio (1.55×VRWM). | Better for higher-energy surges but requires more board space and exhibits slower thermal recovery due to larger junction mass. | Choose only if system-level testing confirms 1500W surge immunity is needed and PCB layout allows DO-214AB footprint. |
Compared with SMAJ28A-Q and 1.5SMC28A, the P6SMAJ28ADFQ-13 uniquely balances automotive qualification, compact D-FLAT packaging, and tight clamping performance-making it optimal for space-constrained, safety-critical 24V systems where supply chain compliance and thermal efficiency are prioritized.
Availability
P6SMAJ28ADFQ-13 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecom remote radio units requiring stable component supply, AEC-Q101 compliance, and consistent surge protection performance across production batches.
Supply support for P6SMAJ28ADFQ-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 markets with IATF16949-certified facilities.
The P6SMAJxxADFQ series belongs to Diodes' automotive-grade TVS portfolio, designed specifically for robust transient suppression in 12V/24V vehicle subsystems and industrial power interfaces where AEC-Q101 validation and PPAP readiness are mandatory.
FAQ
What is the polarity configuration of P6SMAJ28ADFQ-13?
The P6SMAJ28ADFQ-13 is a unidirectional TVS diode with cathode terminal marked by a band. It conducts only when reverse-biased beyond its breakdown voltage, making it suitable for DC line protection where polarity is fixed. The anode connects to the protected line and cathode to ground.
Does P6SMAJ28ADFQ-13 meet automotive qualification standards?
Yes, P6SMAJ28ADFQ-13 is AEC-Q101 qualified, manufactured in IATF16949:2016 certified facilities, and PPAP capable. It supports automotive change control requirements and is rated for operation from -55°C to +150°C, meeting critical reliability demands for engine bay and chassis-mounted electronics.
How does the D-FLAT package affect thermal performance?
The D-FLAT package delivers 57°C/W junction-to-terminal thermal resistance when mounted on a 0.4" × 0.5" 2oz copper pad. This enables efficient heat transfer to the PCB during transient events, sustaining 600W peak power without exceeding 150°C junction temperature under defined test conditions.
Can P6SMAJ28ADFQ-13 be used in bidirectional surge protection applications?
No-P6SMAJ28ADFQ-13 is unidirectional and not rated for forward conduction during surge events. For AC or bidirectional line protection (e.g., RS-485, USB), a bidirectional variant such as P6SMBJ28CA or equivalent must be selected to ensure symmetrical clamping in both polarities.
P6SMAJ28ADFQ-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):
- 28V
- Voltage - Breakdown (Min):
- 31.1V
- Voltage - Clamping (Max) @ Ipp:
- 45.4V
- Current - Peak Pulse (10/1000µs):
- 13.2A
- 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
P6SMAJ28ADFQ-13 FAQ
1.How can I place an order for P6SMAJ28ADFQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMAJ28ADFQ-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 P6SMAJ28ADFQ-13 reliable?
The price and inventory of P6SMAJ28ADFQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMAJ28ADFQ-13 is usually 5 days.
3.What payment methods are accepted for P6SMAJ28ADFQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMAJ28ADFQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMAJ28ADFQ-13?
P6SMAJ28ADFQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMAJ28ADFQ-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 P6SMAJ28ADFQ-13?
For technical support, including P6SMAJ28ADFQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMAJ28ADFQ-13 requirements.
6.How does Aetrix verify that P6SMAJ28ADFQ-13 is sourced from the original manufacturer or authorized distributors?
All P6SMAJ28ADFQ-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 P6SMAJ28ADFQ-13 meets industry standards.
7.What is the process for return or replacement of P6SMAJ28ADFQ-13?
All P6SMAJ28ADFQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMAJ28ADFQ-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 P6SMAJ28ADFQ-13 part is unused and in its original packaging.
Return procedure for P6SMAJ28ADFQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMAJ28ADFQ-13 Tags
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