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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Diodes Incorporated PR1504S-T

Name: PR1504S-T
Brand: Diodes Incorporated
SKU: PR1504S-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PR1504S-T

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: DO-204AL, DO-41, Axial

Datasheet:: PR1504S-T.pdf

Description:: DIODE GEN PURP 400V 1.5A DO41

Quantity:: RFQ Add To RFQ list

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Inventory:8,631

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Product details

Overview

PR1504S-T from Diodes Incorporated is a 1.5A fast recovery rectifier diode in DO-41 package, rated for 400V peak repetitive reverse voltage (VRRM), 1.2V forward voltage at 1.5A, and 150ns reverse recovery time - optimized for high-efficiency AC/DC front-end rectification in offline power supplies and auxiliary rails.

For engineers reviewing the PR1504S-T datasheet, PR1504S-T pinout, PR1504S-T application, or PR1504S-T equivalent, key selection criteria include VRRM derating margin, trr-dependent switching loss in flyback/foward converters, thermal resistance (R_JA = 35 K/W), and DO-41 lead-form compatibility with through-hole PCB layouts.

Technical Context

This device employs a diffused junction process to achieve fast recovery characteristics (trr = 150 ns) while maintaining low forward voltage (V_F = 1.2 V @ 1.5 A) and high surge tolerance (I_FSM = 50 A, 8.3 ms half-sine). It is designed for single-phase, half-wave rectification under resistive or inductive loads at 60 Hz.

The DO-41 plastic package provides UL 94V-0 flammability rating and bright tin-plated leads compliant with MIL-STD-202 Method 208. Reverse leakage remains ≤5.0 µA at 25°C and ≤100 µA at 100°C under rated DC blocking voltage (V_R = 400 V).

Key Specifications

Parameter	Value and Actual Design Meaning
VRRM	400 V - Maximum non-repetitive reverse voltage before breakdown; sets minimum insulation margin for 230VAC input designs.
IO @ TA=50°C	1.5 A - Continuous average forward current with leads held at ambient at 9.5 mm from case; defines thermal design baseline.
VFM @ IF=1.5A	1.2 V - Forward voltage drop determining conduction loss (1.8 W @ 1.5 A); impacts efficiency and heatsink sizing.
trr	150 ns - Reverse recovery time measured at IF=0.5A, IR=1.0A, Irr=0.25A; critical for EMI and switching loss in SMPS.
IFSM	50 A - Non-repetitive surge current rating (8.3 ms JEDEC half-sine); supports cold-start and line transient robustness.
RJA	35 K/W - Junction-to-ambient thermal resistance; used to calculate max junction temperature rise under steady-state operation.
IRM @ 25°C	5.0 µA - Peak reverse leakage at rated voltage and room temperature; affects standby power and high-impedance bias networks.

Pinout & Package

DO-41 axial-leaded plastic package with cathode band marking; body diameter ~2.0–2.72 mm, length ~4.06–5.21 mm, lead diameter ~0.71–0.864 mm.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to AC source or transformer secondary; polarity must align with circuit topology to avoid reverse conduction.
Cathode (banded end)	Forward current exit / reverse blocking terminal	Marked with band; ties to output capacitor positive or load return; determines rectified polarity in bridge or half-wave configuration.

Key Features

Feature	Design Value
Fast recovery (trr = 150 ns)	Reduces switching losses and EMI generation in high-frequency rectifier stages operating up to ~100 kHz.
Low VFM (1.2 V @ 1.5 A)	Lowers conduction loss by ~15% vs. standard recovery diodes, improving efficiency in low-voltage output rails.
50 A IFSM surge rating	Withstands inrush currents during power-up and line transients without degradation in typical 230VAC applications.
RoHS-compliant finish	Bright tin-plated leads ensure reliable solderability and compliance with environmental regulations for industrial and consumer products.

Applications

Offline AC/DC Power Supply

Industrial Control Auxiliary Rail

Use Scenario: Primary-side rectification in universal-input (85–265 VAC) flyback converters for LED drivers and IoT power modules.

IC Role / Device Role / Timing Role: Half-wave rectifier converting AC line to unregulated DC bus; interfaces directly with primary switch and bulk capacitor.

Use Value: 150 ns trr minimizes reverse recovery charge (Q_rr) and associated switching loss, enabling higher frequency operation without excessive heating.

Use Scenario: Secondary-side rectification for isolated 12 V or 24 V control logic rails in PLC backplanes and motor drive gate drivers.

IC Role / Device Role / Timing Role: Output rectifier delivering stable low-noise DC to microcontrollers and optocouplers; operates at fixed 60 Hz or low-kHz ripple frequencies.

Use Value: 1.2 V V_F ensures minimal voltage drop across the diode, preserving regulation margin for sensitive digital ICs under full load.

Consumer Adapter Front-End

Appliance Standby Power Circuit

Use Scenario: Input rectification in compact wall adapters powering USB-C PD accessories and smart home hubs.

IC Role / Device Role / Timing Role: First active component after fuse and EMI filter; handles full AC input current with minimal footprint.

Use Value: DO-41 package enables manual or wave-solder assembly; 35 K/W R_JA allows operation without heatsink at ≤1.2 A continuous load.

Use Scenario: Low-power rectification feeding 5 V or 3.3 V always-on rails in refrigerators, washing machines, and HVAC controllers.

IC Role / Device Role / Timing Role: Maintains standby voltage during main system shutdown; subjected to long-term thermal cycling and humidity exposure.

Use Value: UL 94V-0 case material and ≤100 µA IR at 100°C ensure reliability over 10+ year field life under elevated ambient temperatures.

Equivalent & Alternatives

The following parts are listed as comparable options for similar fast recovery rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1L06U	Same 600 V VRRM, but 1 A IO rating and TO-220AC package; trr = 100 ns, VFM = 1.15 V @ 1 A.	Higher voltage margin but lower current capacity; requires heatsink above 0.7 A due to higher R_JA.	Prefer when 600 V isolation is mandatory and board space permits TO-220 mounting.
ON Semi MUR160	600 V VRRM, 1 A IO, DO-41, trr = 75 ns, VFM = 1.25 V @ 1 A; RoHS-compliant.	Superior speed but lower current rating; not suitable for sustained >1 A loads without derating.	Select where ultra-fast recovery dominates over current handling, e.g., resonant LLC snubber paths.

Compared with STTH1L06U and MUR160, PR1504S-T offers optimal balance of 400 V rating, 1.5 A current capability, and DO-41 form factor - making it preferable for cost-sensitive, space-constrained 230VAC input designs requiring no heatsink below 1.5 A.

Availability

PR1504S-T is available at Aetrix Electronics and suitable for offline AC/DC power supplies, industrial control auxiliary rails, and consumer adapter front-ends requiring stable component supply and long-lifecycle support.

Supply support for PR1504S-T 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, application-optimized components for power management, signal integrity, and protection.

PR1504S-T belongs to the PR150x/S fast recovery rectifier family, engineered for cost-effective, thermally efficient AC/DC conversion in industrial, consumer, and computing power systems.

FAQ

What is the maximum allowable junction temperature for PR1504S-T?

The absolute maximum junction temperature is +150°C, per the datasheet's T_j specification. Operation at this limit requires strict thermal design: with R_JA = 35 K/W and P_D = V_F × I_O ≈ 1.8 W, ambient must be held ≤95°C - typically achieved via PCB copper area, airflow, or derating to 1.2 A at 70°C ambient.

Is PR1504S-T suitable for capacitive-input filter applications?

No - the datasheet explicitly states "For capacitive load, derate current by 20%." In such configurations, peak charging currents increase dramatically, raising I_FSM stress and accelerating wear. Use only with resistive or inductive loads unless additional series impedance or soft-start circuitry is implemented.

Does PR1504S-T have a qualified automotive grade variant?

No - PR1504S-T is not AEC-Q101 qualified and is marked "NOT RECOMMENDED FOR NEW DESIGN" in the datasheet. Diodes Incorporated does not offer an automotive-grade version of this part; designers targeting automotive applications should consider the SBxx series or APx family with full AEC qualification and extended temperature screening.

How does the "-T" suffix affect packaging and assembly?

The "-T" suffix denotes 5,000-piece tape-and-reel packaging on 13-inch reels, optimized for automated pick-and-place assembly. Unlike bulk ("-B") or ammo-pack ("-A") variants, -T supports SMT-compatible feeders and reduces handling damage - though the DO-41 body still requires axial placement or post-reflow taping for through-hole reflow processes.

PR1504S-T Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: DO-204AL, DO-41, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 400 V

Current - Average Rectified (Io):: 1.5A

Voltage - Forward (Vf) (Max) @ If:: 1.2 V @ 1.5 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 150 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 400 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-41

Operating Temperature - Junction:: -65°C ~ 150°C

PR1504S-T FAQ

1.How can I place an order for PR1504S-T through Aetrix?

Please submit a Request for Quotation (RFQ) for PR1504S-T 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 PR1504S-T reliable?

The price and inventory of PR1504S-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PR1504S-T is usually 5 days.

3.What payment methods are accepted for PR1504S-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PR1504S-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PR1504S-T?

PR1504S-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PR1504S-T 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 PR1504S-T?

For technical support, including PR1504S-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PR1504S-T requirements.

6.How does Aetrix verify that PR1504S-T is sourced from the original manufacturer or authorized distributors?

All PR1504S-T 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 PR1504S-T meets industry standards.

7.What is the process for return or replacement of PR1504S-T?

All PR1504S-T units undergo pre-shipment inspection (PSI). If there is an issue with PR1504S-T, 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 PR1504S-T part is unused and in its original packaging.

Return procedure for PR1504S-T:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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