My Inquiry
My Account
Diodes Incorporated P6SMAJ45ADF
- Part No.:
- P6SMAJ45ADF
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
P6SMAJ45ADF.pdf
- Description:
- TVS DIODE 45VWM 72.7VC D-FLAT
- Quantity:
- Payment:
- Shipping:
Inventory:3,284
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMAJ45ADF 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 45V reverse standoff voltage, 50–57.5V breakdown range at 1mA, 72.7V max clamping voltage at 8.3A peak pulse current, and D-FLAT package for space-constrained PCB layouts-used in industrial power supplies and automotive body electronics.
For engineers reviewing the P6SMAJ45ADF datasheet, P6SMAJ45ADF pinout, P6SMAJ45ADF application, or P6SMAJ45ADF equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, thermal resistance under board layout constraints, IEC 61000-4-5 surge compliance, and compatibility with automated SMT assembly due to its low-profile D-FLAT footprint.
Technical Context
This unidirectional TVS diode operates as a shunt protector, conducting only during overvoltage transients above its breakdown threshold while presenting high impedance (<1µA leakage at 45V) under normal operation. Its glass-passivated junction ensures stable VBR tolerance and long-term reliability under repeated surge stress.
The device responds within <1ps to fast-rising transients and clamps energy per the standardized 10/1000µs waveform. Thermal performance depends on PCB copper pad area: RθJA is 92°C/W on a 0.4" × 0.5" 2oz pad and 115°C/W on a 1" × 1" pad-critical for sustained surge duty cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - sustains single 10/1000µs surges up to 600W without failure |
| Reverse Standoff Voltage | 45.0V - maximum continuous DC voltage before significant leakage begins |
| Breakdown Voltage Range | 50.0–57.5V @ 1mA - defines reliable conduction onset window for design margining |
| Max Clamping Voltage | 72.7V @ 8.3A - limits voltage seen by downstream circuitry during worst-case surge |
| Peak Pulse Current | 8.3A - maximum transient current the device can safely divert |
| Junction-to-Ambient RθJA | 92°C/W - thermal resistance on recommended 0.4" × 0.5" copper pad |
| Package | D-FLAT - 2-pin, low-profile (1.1mm max height), surface-mount plastic case |
Pinout & Package
Package: D-FLAT - molded plastic case with cathode band marking; dimensions: 4.60 × 2.80 × 1.10 mm (L × W × H); weight ≈ 0.035 g; UL 94V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Transient current sink | Connected to protected line; conducts surge current to ground when voltage exceeds VBR |
| 2 (Anode) | Reference node | Typically tied to system ground; completes shunt path during clamping event |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Ensures stable breakdown voltage and low parameter drift over temperature and lifetime |
| Low-profile D-FLAT package | Reduces board real estate use by >40% vs. SMA; enables dense routing in compact power modules |
| Fast response time (<1 ps) | Clamps ESD and lightning-induced transients before sensitive ICs experience overstress |
| RoHS-compliant & halogen-free | Meets IPC-1752A material declaration requirements for green manufacturing and end-of-life recycling |
| 64°C/W junction-to-terminal RθJT | Enables efficient heat transfer to PCB copper, supporting higher surge repetition rates in thermally constrained designs |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
Use Scenario: Protects 24V CAN and LIN bus interface pins against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between signal line and chassis ground to clamp transients below microcontroller I/O absolute maximum rating. Use Value: Limits clamped voltage to 72.7V-well below typical 80V automotive MCU I/O withstand level-while surviving 10/1000µs surges up to 8.3A. | Use Scenario: Shields 48V auxiliary power rail inputs in ADAS domain controllers from battery reversal and jump-start spikes. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input stage, positioned upstream of DC-DC converters to prevent damage during fault conditions. Use Value: Withstands 600W peak pulse power and maintains <1µA leakage at 45V nominal rail, minimizing standby current loss. |
| Telecom PoE Injector Port | Medical Diagnostic Equipment Power Input |
Use Scenario: Safeguards IEEE 802.3af/at PoE injector secondary-side outputs against induced surges from Ethernet cable coupling. IC Role / Device Role / Timing Role: Secondary-side TVS on 48–57V output rail, coordinated with primary-side MOVs to meet IEC 61000-4-5 Level 4 immunity. Use Value: 72.7V clamping voltage provides ≥10V margin above 57V PoE+ maximum, ensuring downstream PD ICs remain within safe operating area. | Use Scenario: Guards isolated 24V DC input of portable ultrasound units against ESD and defibrillator-induced transients per IEC 60601-1-2. IC Role / Device Role / Timing Role: Final-stage transient suppressor on medical-grade power entry module, placed after common-mode chokes and before isolation barrier. Use Value: Halogen-free, RoHS-compliant construction meets medical device material restrictions; 57.5V max VBR ensures precise triggering without false trips during normal 24V ±10% operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ45A | Same 45V VRWM, but SMB package (higher RθJA = 125°C/W); 600W rating confirmed | Larger footprint (4.6 × 3.6 mm vs. D-FLAT's 4.6 × 2.8 mm); less suitable for ultra-dense layouts | Select when existing PCB land pattern matches SMB and thermal margin allows higher RθJA |
| 1.5SMC47A | Higher 47V VRWM; same 600W rating; DO-214AB package; 76.0V clamping at 7.9A | Less precise voltage matching for 45V systems; larger height (2.4mm) may conflict with shield cans | Choose only if 47V standoff is acceptable and board clearance permits taller profile |
Compared with SMBJ45A and 1.5SMC47A, P6SMAJ45ADF offers the smallest footprint and lowest profile among 600W 45V TVS diodes, with verified 92°C/W thermal resistance on minimal copper-making it optimal for space- and thermal-limited industrial and automotive control modules.
Availability
P6SMAJ45ADF is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and telecom power supply designs requiring stable component supply, consistent surge performance, and RoHS/halogen-free compliance.
Supply support for P6SMAJ45ADF 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 robust, low-profile surge protection in space-constrained, high-density PCB environments where thermal efficiency and automated assembly compatibility are critical.
FAQ
What is the polarity configuration of P6SMAJ45ADF?
P6SMAJ45ADF is a unidirectional TVS diode with cathode-anode polarity. Pin 1 (marked with cathode band) connects to the line being protected; Pin 2 connects to ground. It conducts only during positive transients exceeding its breakdown voltage-ideal for DC rail protection where reverse voltage is not expected.
Does P6SMAJ45ADF meet IEC 61000-4-5 surge immunity requirements?
Yes-P6SMAJ45ADF is rated for 600W peak pulse power per the 10/1000µs waveform defined in IEC 61000-4-5. When used with appropriate PCB layout (e.g., short traces, adequate ground plane), it supports Level 4 (4kV line-earth, 2kV line-line) immunity when combined with upstream filtering components.
How does thermal performance vary with PCB copper area?
RθJA is 92°C/W on a 0.4" × 0.5" 2oz copper pad and 115°C/W on a 1" × 1" pad. Smaller pads improve thermal resistance due to reduced lateral conduction losses-contrary to typical IC behavior-because the D-FLAT package transfers heat primarily through its terminals into localized copper, not via package top/bottom convection.
Can P6SMAJ45ADF be used in bidirectional configurations?
No-P6SMAJ45ADF is strictly unidirectional. For AC or bipolar signal line protection, a bidirectional variant (e.g., P6SMAJ45CA) or back-to-back unidirectional pair is required. Using this part in reverse-biased AC applications risks permanent junction damage due to lack of reverse conduction capability.
P6SMAJ45ADF 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):
- 45V
- Voltage - Breakdown (Min):
- 50V
- Voltage - Clamping (Max) @ Ipp:
- 72.7V
- Current - Peak Pulse (10/1000µs):
- 8.3A
- 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
P6SMAJ45ADF FAQ
1.How can I place an order for P6SMAJ45ADF through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMAJ45ADF 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 P6SMAJ45ADF reliable?
The price and inventory of P6SMAJ45ADF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMAJ45ADF is usually 5 days.
3.What payment methods are accepted for P6SMAJ45ADF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMAJ45ADF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMAJ45ADF?
P6SMAJ45ADF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMAJ45ADF 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 P6SMAJ45ADF?
For technical support, including P6SMAJ45ADF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMAJ45ADF requirements.
6.How does Aetrix verify that P6SMAJ45ADF is sourced from the original manufacturer or authorized distributors?
All P6SMAJ45ADF 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 P6SMAJ45ADF meets industry standards.
7.What is the process for return or replacement of P6SMAJ45ADF?
All P6SMAJ45ADF units undergo pre-shipment inspection (PSI). If there is an issue with P6SMAJ45ADF, 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 P6SMAJ45ADF part is unused and in its original packaging.
Return procedure for P6SMAJ45ADF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMAJ45ADF 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…
