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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Diode Arrays

Diodes Incorporated MMBD5004A-7

Name: MMBD5004A-7
Brand: Diodes Incorporated
SKU: MMBD5004A-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MMBD5004A-7

Manufacturer:: Diodes Incorporated

Category:: Diode Arrays

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: MMBD5004A-7.pdf

Description:: DIODE ARRAY GP 350V 300MA SOT233

Quantity:: RFQ Add To RFQ list

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Inventory:9,308

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Product details

Overview

MMBD5004A-7 from Diodes Incorporated is a high-voltage dual switching diode in SOT23 package, rated for 400 V repetitive peak reverse voltage and 300 mA forward current, with 50 ns reverse recovery time and low leakage (≤150 nA at 240 V). It serves as a compact, surface-mount solution for DC-DC converter flyback snubbing and high-side switch clamping in industrial power supplies.

For engineers reviewing the MMBD5004A-7 datasheet, MMBD5004A-7 pinout, MMBD5004A-7 application, or MMBD5004A-7 equivalent, key selection criteria include reverse breakdown voltage, switching speed, thermal resistance (357 °C/W), junction temperature range (–55 to +150 °C), and SOT23 footprint compatibility with automated assembly.

Technical Context

This dual diode integrates two independent, isolated P-N junctions in a single SOT23-3 package, sharing only the common cathode configuration (pin 2) per device marking and top-view diagram. Each diode operates independently with matched electrical characteristics including 400 V V_RRM, 50 ns t_RR, and ≤2.0 pF capacitance at 0 V.

Designed for high-voltage transient suppression and fast switching, it supports unidirectional clamping in flyback converters and bidirectional signal routing in level-shifting interfaces where low stored charge and minimal reverse recovery tail are critical to efficiency and EMI control.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - Withstands repetitive reverse transients up to 400 V without avalanche conduction.
t_RR	50 ns - Enables operation in switching circuits up to ~2 MHz before recovery-induced losses dominate.
I_F	300 mA - Continuous forward current rating per diode under FR-4 thermal conditions (1"×1", 2 oz Cu).
R_θJA	357 °C/W - Junction-to-ambient thermal resistance defines maximum power dissipation (350 mW) at 25 °C ambient.
C_T	0.65–2.0 pF - Low junction capacitance minimizes capacitive loading in high-frequency signal paths.
I_R	150 nA @ 240 V - Ultra-low leakage preserves voltage hold in high-impedance sample-and-hold or bias networks.

Pinout & Package

SOT23-3 plastic surface-mount package with matte tin–annealed terminals; moisture sensitivity level 1; weight ≈ 0.008 g.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode of Diode 1	Input node for first diode path; connects to switching node in clamp or snubber applications.
2	Cathode (Common)	Shared cathode terminal for both diodes; ties to reference rail (e.g., V_CC or ground) in dual-clamp configurations.
3	Anode of Diode 2	Input node for second independent diode path; enables dual-channel routing or redundancy.

Key Features

Feature	Design Value
High-voltage blocking	400 V V_RRM supports use in 28 V–300 V DC bus protection without series stacking.
Fast recovery	50 ns t_RR reduces switching loss and ringing in 100 kHz–1 MHz SMPS designs.
Low-leakage junction	≤150 nA IR at 240 V ensures stable bias in high-gain amplifier feedback or precision reference circuits.
Lead-free & green	Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb) meets IPC-1752A Class 3 requirements.

Applications

DC-DC Flyback Snubber

Industrial Relay Driver Clamp

Use Scenario: Suppresses voltage spikes across primary-side MOSFET during transformer reset in isolated flyback converters.

IC Role / Device Role / Timing Role: Dual-anode, common-cathode diode clamps energy into RC network; each anode handles separate winding or phase.

Use Value: 400 V rating prevents breakdown during 350 V transient overshoot; 50 ns recovery avoids cross-conduction with synchronous rectifiers.

Use Scenario: Protects microcontroller GPIO pins from inductive kickback when driving 24 V DC relays in PLC I/O modules.

IC Role / Device Role / Timing Role: Fast-switching clamp diode placed across relay coil; common cathode tied to 24 V rail.

Use Value: 300 mA IF rating accommodates typical relay coil currents; low C_T avoids signal delay in fast-response safety logic.

AC Line Voltage Monitor

Isolated Signal Level Shifter

Use Scenario: Rectifies and scales 120/240 V AC line voltage for ADC input in smart meter front-end.

IC Role / Device Role / Timing Role: High-voltage dual diode provides full-wave rectification with shared cathode output filtering.

Use Value: 400 V V_RRM withstands 240 V RMS × √2 ≈ 340 V peak; low IR prevents DC offset drift over temperature.

Use Scenario: Translates 3.3 V logic signals between isolated domains in RS-485 transceiver bias networks.

IC Role / Device Role / Timing Role: Dual diode routes bidirectional data while blocking reverse current in half-duplex mode.

Use Value: Matched VF (0.93–1.29 V) ensures symmetric rise/fall times; SOT23 footprint saves space vs. discrete diode pairs.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage dual switching diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BAT54C-7-F	Lower V_RRM (30 V), faster t_RR (5 ns), higher C_T (10 pF)	Not suitable for >60 V reverse stress; limited to low-voltage logic or USB protection.	Select only if system reverse voltage stays below 30 V and ultra-fast recovery is prioritized over voltage margin.
MMBD1205-7	Higher V_RRM (600 V), slower t_RR (75 ns), same SOT23-3 pinout	Acceptable for 400 V+ flyback but increases switching loss in high-frequency designs.	Preferred for higher-reliability 600 V systems where 25 ns slower recovery is tolerable.

Compared with BAT54C-7-F and MMBD1205-7, the MMBD5004A-7 uniquely balances 400 V blocking, 50 ns recovery, and SOT23 footprint-making it optimal for cost-sensitive industrial 24–300 V power interfaces where neither ultra-low voltage nor extreme HV margin is required.

Availability

MMBD5004A-7 is available at Aetrix Electronics and suitable for DC-DC flyback snubbers, industrial relay driver clamps, AC line voltage monitors, and isolated signal level shifters requiring stable component supply despite its obsolete status.

Supply support for MMBD5004A-7 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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

The MMBD5004A-7 belongs to Diodes' high-voltage switching diode product line, engineered specifically for robust transient suppression and efficient energy recycling in industrial power conversion and interface protection.

FAQ

Is MMBD5004A-7 still in production?

No-Diodes Incorporated has officially discontinued the MMBD5004A-7. It is marked "OBSOLETE – PART DISCONTINUED" in the latest datasheet (DS35585 Rev. 6-4, December 2023). Aetrix Electronics maintains legacy inventory with full traceability and offers lifecycle coordination support for ongoing production needs.

What is the pin configuration for MMBD5004A-7?

The MMBD5004A-7 uses a standard SOT23-3 package with pin 1 = Anode 1, pin 2 = Common Cathode, pin 3 = Anode 2. This configuration is confirmed in the top-view diagram on page 2 of DS35585 and matches Diodes' SOT23 mechanical outline (Package Code: SOT23).

How does MMBD5004A-7 differ from MMBD5004C-7 and MMBD5004S-7?

All three share identical electrical specifications and SOT23 packaging. Differences lie solely in product marking codes (AJK for A, CJK for C, KJB for S) and internal wafer lot traceability-not performance, reliability, or qualification. They are functionally interchangeable in circuit design.

Can MMBD5004A-7 replace BAT54C in 24 V applications?

No-BAT54C is rated for only 30 V V_RRM, while MMBD5004A-7 is rated for 400 V. Substituting MMBD5004A-7 into a BAT54C-designated 24 V circuit introduces unnecessary cost and potential layout mismatch due to higher capacitance and forward voltage; use BAT54C-7-F unless 400 V margin is explicitly required.

MMBD5004A-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Diode Configuration:: 1 Pair Common Anode

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 350 V

Current - Average Rectified (Io) (per Diode):: 300mA (DC)

Voltage - Forward (Vf) (Max) @ If:: 1.275 V @ 200 mA

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

Reverse Recovery Time (trr):: 50 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 360 V

Operating Temperature - Junction:: -55°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

MMBD5004A-7 FAQ

1.How can I place an order for MMBD5004A-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for MMBD5004A-7 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 MMBD5004A-7 reliable?

The price and inventory of MMBD5004A-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBD5004A-7 is usually 5 days.

3.What payment methods are accepted for MMBD5004A-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBD5004A-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MMBD5004A-7?

MMBD5004A-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MMBD5004A-7 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 MMBD5004A-7?

For technical support, including MMBD5004A-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBD5004A-7 requirements.

6.How does Aetrix verify that MMBD5004A-7 is sourced from the original manufacturer or authorized distributors?

All MMBD5004A-7 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 MMBD5004A-7 meets industry standards.

7.What is the process for return or replacement of MMBD5004A-7?

All MMBD5004A-7 units undergo pre-shipment inspection (PSI). If there is an issue with MMBD5004A-7, 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 MMBD5004A-7 part is unused and in its original packaging.

Return procedure for MMBD5004A-7:

1.Submit a request within 90 days.

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

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