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Diodes Incorporated P6SMAJ48ADF-13
- Part No.:
- P6SMAJ48ADF-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
P6SMAJ48ADF-13.pdf
- Description:
- TVS DIODE 48VWM 77.4VC D-FLAT
- Quantity:
- Payment:
- Shipping:
Inventory:6,213
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Product details
Overview
P6SMAJ48ADF-13 from Diodes Incorporated is a 600W surface-mount transient voltage suppressor (TVS) diode in the D-FLAT package, designed for unidirectional overvoltage protection of DC power rails and signal lines. It features a 48V reverse standoff voltage (VRWM), 53.3–61.3V breakdown range (VBR), 77.4V clamping voltage (VC) at 7.7A peak pulse current (IPP), and fast response time for ESD and surge suppression in industrial power supplies and automotive control modules.
For engineers reviewing the P6SMAJ48ADF-13 datasheet, P6SMAJ48ADF-13 pinout, P6SMAJ48ADF-13 application, or P6SMAJ48ADF-13 equivalent, key selection criteria include clamping voltage margin relative to protected IC VCC, thermal resistance under PCB layout constraints, peak pulse power derating above +25°C, and compliance with IEC 61000-4-2/4-5 surge immunity requirements.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below VRWM (48V), enters avalanche breakdown between 53.3V and 61.3V, and limits transient energy by clamping to ≤77.4V during 10/1000µs surges up to 7.7A. Its glass-passivated die ensures stable leakage (<1µA at VRWM) and repeatable breakdown characteristics.
The D-FLAT package enables low-profile mounting with 64°C/W junction-to-terminal thermal resistance on standard FR-4 layouts. Polarity is marked by a cathode band; anode and cathode terminals are optimized for minimal parasitic inductance in surge-current paths.
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) | 48V - Maximum continuous DC or RMS voltage before significant leakage begins |
| Breakdown Voltage (VBR) | 53.3–61.3V @ 1mA - Ensures reliable turn-on margin above VRWM for robust surge margin |
| Clamping Voltage (VC) | 77.4V @ IPP = 7.7A - Limits downstream voltage stress during worst-case surge events |
| Leakage Current (IR) | <1µA @ 48V - Minimizes standby power loss and avoids false triggering in low-power circuits |
| Package | D-FLAT - 2-pin, low-profile surface-mount outline (4.65 × 2.80 mm) with cathode band marking |
Pinout & Package
The P6SMAJ48ADF-13 is housed in the D-FLAT package: a compact, molded-plastic, surface-mount case (UL 94V-0 rated) with matte tin–annealed copper leadframe terminals and a visible cathode band for polarity identification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side connection to protected line | Connected to rail or signal being protected; carries surge current to ground when clamping |
| 2 (Anode) | Low-side connection to reference (GND) | Provides return path for transient current; must be routed with minimal inductance to ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Ensures stable, repeatable breakdown voltage and long-term reliability under repeated surge stress |
| 600W peak pulse power rating | Supports IEC 61000-4-5 Level 4 (4kV) surge protection on 24–48V industrial buses |
| Low-profile D-FLAT package | Reduces board space by >40% vs. SMA packages while maintaining thermal performance |
| RoHS-compliant, halogen-free "Green" construction | Meets EU RoHS 2 and JEDEC J-STD-020 moisture sensitivity Level 1 for standard reflow |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting 48V CAN-FD and LIN bus interfaces against load dump and ESD in factory automation controllers. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between signal line and chassis ground to clamp transients before they reach transceiver inputs. Use Value: Clamps 77.4V at 7.7A, providing ≥15V margin below typical 90V automotive load-dump test thresholds. | Use Scenario: Safeguarding microcontroller GPIOs and sensor supply rails in BCMs exposed to battery reversal and jump-start surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 5V/12V/48V internal rails, activated within <1ns to limit voltage overshoot. Use Value: 1µA max leakage at 48V VRWM prevents measurable quiescent current increase in always-on subsystems. |
| Telecom Power Supply Input | Renewable Energy Inverter Control Board |
Use Scenario: Front-end protection of AC/DC and DC/DC converters in 48V telecom rectifiers subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level TVS after MOVs, absorbing residual energy and limiting let-through voltage to downstream regulators. Use Value: 600W rating enables handling of 10/1000µs surges up to 7.7A without degradation, per IEC 61000-4-5. | Use Scenario: Protecting isolated gate drivers and MCU supply pins on solar inverter control boards operating in high-humidity outdoor environments. IC Role / Device Role / Timing Role: Low-leakage, high-reliability clamping device mounted near sensitive analog and digital ICs on multi-layer PCBs. Use Value: D-FLAT package's 64°C/W RθJT allows direct thermal coupling to inner ground planes, sustaining repeated surges without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ48A-Q | Same VRWM (48V), slightly higher VC (79.0V @ 7.5A); AEC-Q200 qualified | Required for automotive production where qualification is mandatory; not needed for industrial use | Select if AEC-Q200 compliance is contractually required; otherwise P6SMAJ48ADF-13 offers lower VC and cost |
| 1.5SMC47A | Higher VRWM (47V), larger SMC package (7.1 × 6.2 mm), 600W rating, VC = 77.0V @ 7.8A | Used where board space is less constrained and higher thermal mass is beneficial for repetitive surges | Choose only if D-FLAT footprint is incompatible; SMC adds >3× board area and requires larger copper pads |
Compared with SMAJ48A-Q and 1.5SMC47A, P6SMAJ48ADF-13 delivers identical surge capability in a 40% smaller footprint, lower clamping voltage, and industrial-grade reliability-making it optimal for space-constrained 48V systems where AEC-Q200 is not mandated.
Availability
P6SMAJ48ADF-13 is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, telecom power supply input stages, and renewable energy inverter control boards requiring stable component supply across extended production cycles.
Supply support for P6SMAJ48ADF-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 protection, power management, and signal integrity solutions for industrial, automotive, and communications markets.
The P6SMAJ series belongs to Diodes' transient voltage suppressor product line, engineered specifically for compact, high-power-density surge protection in space-constrained 24–85V DC systems with stringent thermal and reliability requirements.
FAQ
What is the maximum operating temperature for P6SMAJ48ADF-13?
The P6SMAJ48ADF-13 has an operating junction temperature range of –55°C to +150°C. Its thermal resistance (RθJA) is 92°C/W on a 0.4" × 0.5" FR-4 board, meaning ambient temperature must be limited to ≤+85°C to keep TJ ≤+150°C at full 600W pulse dissipation. Derating curves in DS38930 show 50% power reduction at +100°C ambient.
Is P6SMAJ48ADF-13 bidirectional or unidirectional?
P6SMAJ48ADF-13 is a unidirectional TVS diode, indicated by its single cathode band marking and electrical specification table listing only reverse standoff (VRWM) and breakdown (VBR) parameters-not symmetrical forward/reverse ratings. It protects against positive transients on the cathode side relative to anode (ground), and conducts only in reverse avalanche mode.
Can P6SMAJ48ADF-13 replace P6SMAJ47A in existing designs?
Yes, P6SMAJ48ADF-13 can directly replace P6SMAJ47A: both share identical D-FLAT package, 600W rating, and pinout. The VRWM increases from 47V to 48V, VBR from 52.2–59.9V to 53.3–61.3V, and VC from 76.0V to 77.4V-resulting in slightly higher clamping but improved margin against 48V nominal rail overvoltage. No layout or firmware changes are needed.
Does P6SMAJ48ADF-13 meet IEC 61000-4-2 and IEC 61000-4-5 standards?
P6SMAJ48ADF-13 is designed to support compliance with IEC 61000-4-2 (ESD ±8kV contact/±15kV air) and IEC 61000-4-5 (surge 4kV line-earth, 2kV line-line) when properly implemented-i.e., with low-inductance grounding, appropriate PCB layout, and coordination with upstream protectors like MOVs. Its 77.4V clamping and 7.7A IPP align with Level 4 requirements for 48V systems.
P6SMAJ48ADF-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 2-SMD, Flat Leads
- Series:
- SMAJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 48V
- Voltage - Breakdown (Min):
- 53.3V
- Voltage - Clamping (Max) @ Ipp:
- 77.4V
- Current - Peak Pulse (10/1000µs):
- 7.7A
- Power - Peak Pulse:
- 600W
- 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:
- D-Flat
P6SMAJ48ADF-13 FAQ
1.How can I place an order for P6SMAJ48ADF-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMAJ48ADF-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 P6SMAJ48ADF-13 reliable?
The price and inventory of P6SMAJ48ADF-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMAJ48ADF-13 is usually 5 days.
3.What payment methods are accepted for P6SMAJ48ADF-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMAJ48ADF-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMAJ48ADF-13?
P6SMAJ48ADF-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMAJ48ADF-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 P6SMAJ48ADF-13?
For technical support, including P6SMAJ48ADF-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMAJ48ADF-13 requirements.
6.How does Aetrix verify that P6SMAJ48ADF-13 is sourced from the original manufacturer or authorized distributors?
All P6SMAJ48ADF-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 P6SMAJ48ADF-13 meets industry standards.
7.What is the process for return or replacement of P6SMAJ48ADF-13?
All P6SMAJ48ADF-13 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMAJ48ADF-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 P6SMAJ48ADF-13 part is unused and in its original packaging.
Return procedure for P6SMAJ48ADF-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMAJ48ADF-13 Tags
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