My Inquiry
My Account
Diodes Incorporated P6SMAJ26ADF
- Part No.:
- P6SMAJ26ADF
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
P6SMAJ26ADF.pdf
- Description:
- TVS DIODE 26VWM 42.1VC D-FLAT
- Quantity:
- Payment:
- Shipping:
Inventory:9,664
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMAJ26ADF from Diodes Incorporated is a 600W surface-mount transient voltage suppressor (TVS) diode designed for unidirectional overvoltage protection in DC power rails and signal lines. It features a reverse standoff voltage of 26 V, breakdown voltage range 28.9–33.2 V at 1 mA, clamping voltage of 42.1 V at 14.2 A peak pulse current, and D-FLAT package for space-constrained PCB layouts.
For engineers reviewing the P6SMAJ26ADF datasheet, P6SMAJ26ADF pinout, P6SMAJ26ADF application, or P6SMAJ26ADF equivalent, key selection criteria include clamping performance under 10/1000 µs surge, thermal resistance to terminal (57 °C/W on optimized pad), low leakage (<1 µA at VRWM), and RoHS-compliant green construction with matte tin finish.
Technical Context
This unidirectional TVS diode operates as a shunt-clamping device that remains high-impedance below 26 V and rapidly avalanches above its breakdown threshold to limit transient voltages. Its glass-passivated junction ensures stable VBR tolerance and long-term reliability under repetitive surge stress.
The D-FLAT package enables low-inductance mounting with cathode-band polarity marking, and its thermal design supports 1.5 W steady-state dissipation at TL = +75°C. The 10/1000 µs waveform compliance confirms suitability for IEC 61000-4-5 Level 3–4 surge immunity testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600 W - Sustains single 10/1000 µs surges up to this energy level without failure |
| Reverse Standoff Voltage (VRWM) | 26 V - Maximum continuous DC or RMS voltage before significant leakage begins |
| Breakdown Voltage (VBR) | 28.9–33.2 V @ 1 mA - Confirmed avalanche initiation range under standardized test current |
| Clamping Voltage (VC) | 42.1 V @ 14.2 A - Maximum voltage seen by protected circuit during specified 10/1000 µs transient |
| Junction-to-Terminal RθJT | 57 °C/W - Measured on 0.4" × 0.5" FR-4 pad; defines thermal path efficiency to PCB copper |
| Operating Temperature | −55 to +150 °C - Validated performance across industrial and automotive ambient ranges |
| Leakage Current (IR) | <1 µA @ 26 V - Ensures minimal standby power loss and signal integrity in high-impedance nodes |
Pinout & Package
Package: D-FLAT - Low-profile surface-mount package (4.65 mm × 2.80 mm × 1.10 mm max), molded plastic case rated UL 94V-0, with cathode band polarity indicator and matte tin–annealed copper leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Transient current sink | Connected to protected line; conducts surge current to ground when clamping |
| 2 (Anode) | Reference / Ground return | Typically tied to system ground plane; completes low-inductance surge path |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Ensures stable VBR over temperature and lifetime, with reduced parameter drift vs. epoxy-passivated alternatives |
| 600 W peak pulse rating | Supports robust IEC 61000-4-5 surge immunity (e.g., ±1 kV line-earth, ±0.5 kV line-line) |
| D-FLAT low-profile package | Reduces board area by >40% vs. SMA; enables routing under adjacent components |
| RoHS & halogen-free | Complies with EU RoHS 2 and green standards (<900 ppm Br/Cl, <1000 ppm Sb); suitable for eco-sensitive end markets |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting 24 V DC sensor inputs against load dump and inductive switching transients in factory automation cabinets. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between input line and chassis ground to clamp surges before reaching downstream op-amps or microcontroller GPIO. Use Value: Clamps 10/1000 µs transients to ≤42.1 V, preventing damage to 3.3 V or 5 V logic interfaces while maintaining <1 µA leakage at nominal 24 V operation. | Use Scenario: Safeguarding LIN bus transceivers and power window motor drivers from battery line transients during ignition and alternator load dump events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12 V supply rail upstream of LDO regulators and CAN/LIN interface ICs. Use Value: Withstands 60 A surge (8.3 ms half-sine) and limits clamping voltage to 42.1 V, preserving regulator input ratings and avoiding brownout-induced resets. |
| Telecom Power Feeds | Medical Diagnostic Equipment |
Use Scenario: Protecting PoE-powered Ethernet ports and remote PHY power inputs against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-stage TVS on DC input side of isolated DC/DC converter, coordinated with gas discharge tube (GDT) upstream. Use Value: Fast response (<1 ns) and 600 W rating enable coordination with GDT to handle multi-kV surges while limiting let-through voltage to safe levels for secondary-side isolation barriers. | Use Scenario: Securing auxiliary 24 V power rails feeding imaging sensor bias supplies and analog front-end amplifiers in ultrasound or MRI subsystems. IC Role / Device Role / Timing Role: Transient suppression on non-isolated auxiliary rails where ESD and EFT events could disrupt sensitive analog measurements. Use Value: Ultra-low leakage (<1 µA) prevents signal offset drift in high-gain amplifier stages; D-FLAT footprint avoids interference with RF-shielded enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26A | Same 26 V VRWM, but SMB package (larger footprint, higher RθJA = 110 °C/W) | Less suitable for ultra-dense layouts; lower thermal efficiency on small pads | Select when board space allows and legacy SMB footprint compatibility is required |
| 1.5SMC26A | Same electrical specs, but SMC package (7.1 mm × 6.2 mm); 1500 W rating | Over-specified power handling increases cost and size; higher parasitic inductance | Choose only if legacy SMC board layout exists or >600 W surge margin is mandated |
Compared with SMBJ26A and 1.5SMC26A, P6SMAJ26ADF delivers identical clamping performance in a 40% smaller footprint and 30% lower thermal resistance to terminal-making it optimal for modern compact, thermally constrained designs without sacrificing surge robustness.
Availability
P6SMAJ26ADF is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, telecom power feeds, and medical diagnostic equipment requiring stable component supply and consistent surge immunity performance.
Supply support for P6SMAJ26ADF 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 computing markets.
The P6SMAJ series belongs to Diodes' transient voltage suppressor product line, engineered specifically for high-power-density, surface-mount overvoltage protection in space- and thermal-constrained applications demanding precise clamping and long-term stability.
FAQ
What is the maximum clamping voltage of P6SMAJ26ADF under standard test conditions?
The maximum clamping voltage (VC) is 42.1 V, measured at a peak pulse current (IPP) of 14.2 A using the standardized 10/1000 µs double-exponential waveform per REA and IEC 61000-4-5 Annex C. This value is guaranteed across the full operating temperature range and represents the highest voltage imposed on the protected circuit during surge events.
Does P6SMAJ26ADF require a heatsink for typical operation?
No external heatsink is required. At steady-state, the device dissipates up to 1.5 W at TL = +75°C, and its D-FLAT package achieves a junction-to-terminal thermal resistance of 57 °C/W when mounted on a 0.4" × 0.5" 2 oz copper pad. Adequate PCB copper area serves as the primary thermal path-no additional thermal mass is needed for standard surge duty cycles.
How does the D-FLAT package affect PCB layout versus traditional SMA or SMB packages?
The D-FLAT package measures 4.65 mm × 2.80 mm × 1.10 mm, reducing board area by ~45% compared to SMB and ~60% versus SMA. Its flat bottom and short leads minimize parasitic inductance (<0.5 nH), improving high-frequency surge response. Pad layout must follow Diodes' recommended 0.2" × 0.25" copper land pattern to achieve specified thermal resistance.
Is P6SMAJ26ADF suitable for bidirectional transient protection?
No-it is a unidirectional TVS diode intended for DC rail protection with defined polarity. For AC or bidirectional signal line protection (e.g., RS-485, USB), a bidirectional variant such as P6SMAJ26CA must be used. Using P6SMAJ26ADF on AC signals risks forward conduction and permanent damage during negative half-cycles.
P6SMAJ26ADF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 2-SMD, Flat Leads
- Series:
- SMAJ
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 42.1V
- Current - Peak Pulse (10/1000µs):
- 14.2A
- 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
P6SMAJ26ADF FAQ
1.How can I place an order for P6SMAJ26ADF through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMAJ26ADF 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 P6SMAJ26ADF reliable?
The price and inventory of P6SMAJ26ADF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMAJ26ADF is usually 5 days.
3.What payment methods are accepted for P6SMAJ26ADF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMAJ26ADF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMAJ26ADF?
P6SMAJ26ADF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMAJ26ADF 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 P6SMAJ26ADF?
For technical support, including P6SMAJ26ADF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMAJ26ADF requirements.
6.How does Aetrix verify that P6SMAJ26ADF is sourced from the original manufacturer or authorized distributors?
All P6SMAJ26ADF 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 P6SMAJ26ADF meets industry standards.
7.What is the process for return or replacement of P6SMAJ26ADF?
All P6SMAJ26ADF units undergo pre-shipment inspection (PSI). If there is an issue with P6SMAJ26ADF, 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 P6SMAJ26ADF part is unused and in its original packaging.
Return procedure for P6SMAJ26ADF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMAJ26ADF 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…
