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

Microchip Technology 1N6536

Name: 1N6536
Brand: Microchip Technology
SKU: 1N6536
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N6536

Manufacturer:: Microchip Technology

Category:: Single Diodes

Package:: A, Axial

Datasheet:: 1N6536.pdf

Description:: DIODE GEN PURP 400V 1A A AXIAL

Quantity:: RFQ Add To RFQ list

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Inventory:5,894

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Product details

Overview

1N6536 from Microsemi is an ultra-fast recovery rectifier diode rated for 400 V repetitive reverse voltage, 1 A average forward current, and 30 ns reverse recovery time, optimized for high-frequency switching power supplies and snubber circuits.

For engineers reviewing the 1N6536 datasheet, 1N6536 pinout, 1N6536 application, or 1N6536 equivalent, key selection criteria include its 30 ns trr, 1.5 V VF at 1 A, 440 V VBR, 10 µA IR at 400 V, and DO-41 package compatibility with legacy through-hole layouts.

Technical Context

The 1N6536 is a planar epitaxial silicon junction diode engineered for minimal charge storage and rapid minority-carrier sweep-out. Its 30 ns reverse recovery time enables operation in DC-DC converters and flyback topologies switching above 100 kHz.

It exhibits low junction capacitance (50 pF) and tightly specified reverse leakage (10 µA at 400 V), supporting stable performance in high-impedance bias networks and precision clamp applications where leakage-induced error must be minimized.

Key Specifications

Parameter	Value and Actual Design Meaning
Reverse Voltage (V_RWM)	400 V - Maximum continuous reverse blocking capability without breakdown
Forward Voltage (V_F)	1.5 V at 1 A - Low conduction loss enabling efficient 1 A power rectification
Reverse Recovery Time (t_rr)	30 ns - Enables reliable operation in >100 kHz switching power supplies
Reverse Leakage (I_R)	10 µA at 400 V - Minimal leakage preserves signal integrity in high-Z sensing paths
Junction Capacitance (C_j)	50 pF at 25 °C - Predictable capacitive loading for EMI filter and snubber design
Breakdown Voltage (V_BR)	440 V at 1000 µA - Margin above rated 400 V ensures robust surge tolerance

Pinout & Package

1N6536 is housed in a standard DO-41 axial-lead plastic package with cathode band marking. Leads are tinned and suitable for wave or hand soldering per J-STD-001.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side of rectified path; accepts 1 A average forward current
Cathode	Forward current exit / reverse blocking terminal	Marked by band; sustains 400 V reverse bias and defines polarity in bridge or half-wave configurations

Key Features

Feature	Design Value
Ultra-fast recovery	30 ns t_rr minimizes switching losses and ringing in high-frequency SMPS
Low forward voltage	1.5 V V_F reduces conduction loss and thermal stress at 1 A load
Tight leakage control	10 µA I_R at rated 400 V supports stable biasing in precision analog interfaces
Robust breakdown margin	440 V V_BR provides 10% overvoltage headroom for transient suppression

Applications

Switch-Mode Power Supply Input Stage	Snubber Network Clamp Diode
Use Scenario: Rectifying AC input in offline 24–48 V output flyback converters operating at 100–250 kHz. IC Role / Device Role / Timing Role: Primary-side unidirectional current switch enabling energy transfer during MOSFET off-time. Use Value: 30 ns t_rr prevents reverse recovery current spikes that would otherwise increase MOSFET stress and EMI.	Use Scenario: Clamping voltage spikes across switching transistors in motor drive inverters. IC Role / Device Role / Timing Role: Fast-turn-off clamp element absorbing inductive kickback energy. Use Value: 50 pF C_j and 30 ns t_rr ensure rapid turn-on and minimal stored charge, limiting clamping delay and overshoot.
DC-DC Converter Output Rectifier	High-Voltage Signal Conditioning
Use Scenario: Secondary-side rectification in isolated 12 V/1 A telecom DC-DC modules. IC Role / Device Role / Timing Role: Synchronous-free rectifier delivering regulated output with minimal forward drop. Use Value: 1.5 V V_F balances efficiency and thermal rise under sustained 1 A load.	Use Scenario: Precision peak detection and hold circuits in 400 V-rated test equipment front-ends. IC Role / Device Role / Timing Role: High-voltage sampling diode isolating measurement path from source impedance. Use Value: 10 µA I_R prevents discharge error in sample-hold capacitors during acquisition intervals.

Switch-Mode Power Supply Input Stage

Snubber Network Clamp Diode

Use Scenario: Rectifying AC input in offline 24–48 V output flyback converters operating at 100–250 kHz.

IC Role / Device Role / Timing Role: Primary-side unidirectional current switch enabling energy transfer during MOSFET off-time.

Use Value: 30 ns t_rr prevents reverse recovery current spikes that would otherwise increase MOSFET stress and EMI.

Use Scenario: Clamping voltage spikes across switching transistors in motor drive inverters.

IC Role / Device Role / Timing Role: Fast-turn-off clamp element absorbing inductive kickback energy.

Use Value: 50 pF C_j and 30 ns t_rr ensure rapid turn-on and minimal stored charge, limiting clamping delay and overshoot.

DC-DC Converter Output Rectifier

High-Voltage Signal Conditioning

Use Scenario: Secondary-side rectification in isolated 12 V/1 A telecom DC-DC modules.

IC Role / Device Role / Timing Role: Synchronous-free rectifier delivering regulated output with minimal forward drop.

Use Value: 1.5 V V_F balances efficiency and thermal rise under sustained 1 A load.

Use Scenario: Precision peak detection and hold circuits in 400 V-rated test equipment front-ends.

IC Role / Device Role / Timing Role: High-voltage sampling diode isolating measurement path from source impedance.

Use Value: 10 µA I_R prevents discharge error in sample-hold capacitors during acquisition intervals.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1R04	400 V V_RWM, 35 ns t_rr, 1.3 V V_F at 1 A, DO-41	Slightly higher t_rr; lower V_F improves conduction efficiency	Prefer when forward loss dominates thermal budget; verify layout compatibility with ST's lead form
ON Semiconductor MUR140	400 V V_RWM, 50 ns t_rr, 1.25 V V_F, DO-41	Slower recovery increases switching loss in >150 kHz designs	Acceptable for lower-frequency (<100 kHz) rectification where cost sensitivity outweighs speed need

Compared with STTH1R04 and MUR140, the 1N6536 delivers the fastest recovery (30 ns) among the three, making it optimal for high-frequency snubbers and compact SMPS where switching loss and EMI are critical-while maintaining identical DO-41 footprint and 400 V rating.

Availability

1N6536 is available at Aetrix Electronics and suitable for switch-mode power supplies, snubber networks, and high-voltage signal conditioning requiring stable component supply and long-term industrial availability.

Supply support for 1N6536 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

Microsemi (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, RF, and discrete components for aerospace, defense, and industrial systems.

The 1N6536 belongs to Microsemi's legacy ultra-fast rectifier product line, designed specifically for high-efficiency, high-frequency power conversion where fast recovery and controlled leakage are essential.

FAQ

What is the maximum reverse voltage rating for the 1N6536?

The 1N6536 has a maximum repetitive reverse voltage (V_RWM) of 400 V. This rating defines the highest continuous reverse-bias voltage the device can block without entering avalanche breakdown under normal operating conditions. The 1N6536 also achieves a minimum breakdown voltage (V_BR) of 440 V at 1000 µA, providing a 10% safety margin above its rated V_RWM.

What is the forward voltage drop of the 1N6536 at 1 A?

The 1N6536 exhibits a forward voltage drop (V_F) of 1.5 V when conducting 1 A of average forward current at 25 °C ambient temperature. This value is measured under both DC and short-pulse (300 µs) conditions, confirming consistent conduction behavior across steady-state and transient loads. The 1N6536 maintains this V_F specification across its qualified operating range.

How fast is the reverse recovery time of the 1N6536?

The 1N6536 has a reverse recovery time (t_rr) of 30 ns, measured under standard conditions (I_F = 1 A, I_R = 1 A, di/dt = 100 A/µs). This ultra-fast recovery enables use in high-frequency switching applications such as 100–500 kHz DC-DC converters and snubber circuits where minimizing reverse recovery charge (Q_rr) is critical to reduce switching losses and EMI. The 1N6536's t_rr is confirmed in Microsemi's published electrical characteristics table.

What package type does the 1N6536 use?

The 1N6536 is packaged in a DO-41 axial-leaded plastic case with cathode band marking. This industry-standard through-hole package supports manual and automated assembly processes, including wave soldering, and provides mechanical robustness for industrial environments. The 1N6536's DO-41 footprint matches legacy designs and allows direct replacement in existing PCB layouts without rework.

What is the reverse leakage current of the 1N6536 at rated voltage?

The 1N6536 specifies a maximum reverse leakage current (I_R) of 10 µA when subjected to its full rated reverse voltage of 400 V at 25 °C. This low leakage supports stable operation in high-impedance circuits such as precision clamps, sample-and-hold stages, and bias networks where even microamp-level currents could introduce measurable error. The 1N6536's I_R remains within specification across its qualified temperature range.

1N6536 Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: A, Axial

Packaging:: Bulk

Product Status:: Active

Technology:: Standard

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

Current - Average Rectified (Io):: 1A

Voltage - Forward (Vf) (Max) @ If:: 1.5 V @ 1 A

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

Reverse Recovery Time (trr):: 30 ns

Current - Reverse Leakage @ Vr:: 10 µA @ 400 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: A, Axial

Operating Temperature - Junction:: -

1N6536 FAQ

1.How can I place an order for 1N6536 through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N6536 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 1N6536 reliable?

The price and inventory of 1N6536 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6536 is usually 5 days.

3.What payment methods are accepted for 1N6536?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6536 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N6536?

1N6536 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N6536 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 1N6536?

For technical support, including 1N6536 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6536 requirements.

6.How does Aetrix verify that 1N6536 is sourced from the original manufacturer or authorized distributors?

All 1N6536 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 1N6536 meets industry standards.

7.What is the process for return or replacement of 1N6536?

All 1N6536 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6536, 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 1N6536 part is unused and in its original packaging.

Return procedure for 1N6536:

1.Submit a request within 90 days.

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

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