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Diodes Incorporated MMBD2004S
- Part No.:
- MMBD2004S
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBD2004S.pdf
- Description:
- DIODE ARRAY GP 240V 225MA SOT233
- Quantity:
- Payment:
- Shipping:
Inventory:8,923
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Product details
Overview
MMBD2004S from Diodes Incorporated is a high-voltage dual switching diode in SOT23 package, configured as two anode-common diodes with 300V VRRM, 50ns tRR, and 100nA IR at 240V. It serves as a compact, AEC-Q101-qualified HV clamp or signal routing element in automotive power management and industrial DC-DC converter snubbers.
For engineers reviewing the MMBD2004S datasheet, MMBD2004S pinout, MMBD2004S application, or MMBD2004S equivalent, key selection criteria include reverse breakdown margin, switching speed under 30mA IF/IR conditions, thermal derating above 25°C ambient, and dual-series topology compatibility with flyback or boost converter topologies.
Technical Context
This dual diode integrates two independent P-N junctions in a single anode-common configuration - enabling shared cathode switching or series-connected clamping. Its 300V VRRM and 240V VRWM support operation in 200–250V DC bus applications, while the 50ns reverse recovery time ensures minimal switching loss in 100–500kHz power stages.
The device uses epitaxial planar construction for stable leakage performance (≤100nA at 240V, 25°C) and operates across –65°C to +150°C. Its 357°C/W RθJA on FR-4 requires careful thermal pad design when dissipating >150mW per element.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 300 V - supports peak reverse transients up to 300V without avalanche conduction |
| tRR | 50 ns - enables use in switching power supplies operating up to ~500 kHz |
| IR @ 240V | 100 nA - ensures low standby leakage in high-impedance bias networks |
| VF @ 20mA | 0.87 V - yields <17.4 mW conduction loss per diode at 20mA forward current |
| CT @ 0V | 5.0 pF - limits capacitive loading in RF detector or timing circuits |
| PD | 350 mW - total package dissipation limit; derates linearly above 25°C ambient |
| RθJA | 357 °C/W - requires ≥1 in² 2oz copper pad for full-rated power handling |
Pinout & Package
Package: SOT23 - surface-mount plastic case, 3-terminal, anode-common dual diode configuration; dimensions per Diodes Inc. outline SOT23 (L=2.90mm, W=1.30mm, H=1.03mm); moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Diode 1 | Input node for first diode path; connects to switch node or signal source |
| Pin 2 | Cathode (Common) | Shared output terminal; ties both diodes' cathodes together for series or clamp use |
| Pin 3 | Anode of Diode 2 | Input node for second diode path; enables dual independent switching or redundancy |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power modules requiring reliability beyond commercial grade |
| Lead-free & Halogen-free | Meets RoHS 3 and JEDEC J-STD-020 Level 1; no Br/Cl/antimony restrictions in assembly |
| Anode-common dual topology | Enables shared-cathode clamping or dual-path signal steering without external interconnect |
| Low CT and fast tRR | Reduces switching noise and EMI in high-frequency DC-DC converters and snubber networks |
Applications
| Automotive Power Clamp | Industrial Flyback Snubber |
|---|---|
Use Scenario: Suppressing voltage spikes on 12V/24V automotive relay coils and solenoid drivers. IC Role / Device Role / Timing Role: Dual-diode clamp absorbs inductive kickback via common-cathode configuration into rail. Use Value: 300V VRRM withstands >250V transients; 50ns tRR prevents snap-off oscillation during fast turn-off. | Use Scenario: RC-D clamp network in 100–300kHz isolated flyback converters for industrial PLC power supplies. IC Role / Device Role / Timing Role: Fast-recovery diode routes snubber energy to capacitor; dual layout simplifies board routing. Use Value: 100nA IR minimizes capacitor discharge between cycles; 5pF CT avoids resonance with snubber R/C. |
| DC-DC Converter Output Rectifier | High-Voltage Signal Routing |
Use Scenario: Secondary-side synchronous rectification assist in 48V input telecom DC-DC modules. IC Role / Device Role / Timing Role: Dual diode provides redundant freewheeling path or OR-ing function for parallel outputs. Use Value: 225mA IFM supports 200mA load per channel; SOT23 footprint enables dense layout near MOSFETs. | Use Scenario: Bidirectional signal conditioning in HV sensor interfaces (e.g., battery cell monitor inputs). IC Role / Device Role / Timing Role: Anode-common pair acts as voltage-limited signal gate, blocking >240V reverse excursions. Use Value: 240V VRWM ensures safe operation across 200V measurement ranges; low CT preserves signal integrity above 1MHz. |
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 |
|---|---|---|---|
| BAT54S | VRRM = 30V, tRR = 5ns, IR = 1µA @ 25V - lower voltage, faster, higher leakage | Not suitable for >60V systems; limited to low-voltage logic-level clamping | Select only for sub-30V digital I/O protection where speed outweighs voltage rating |
| MMBD1205S | VRRM = 200V, tRR = 50ns, IR = 100nA @ 160V - lower breakdown, same speed and leakage | Acceptable for 150V bus applications but fails at 240V+ transient events | Use where system max reverse stress is ≤180V and cost sensitivity favors older Diodes Inc. part |
Compared with BAT54S and MMBD1205S, the MMBD2004S uniquely delivers 300V standoff with automotive-grade reliability and low-leakage performance - making it the only option among the three qualified for 24V automotive load-dump and industrial 200V DC-link snubbing.
Availability
MMBD2004S is available at Aetrix Electronics and suitable for automotive power clamping, industrial flyback snubbers, and high-voltage signal routing requiring stable component supply, AEC-Q101 compliance, and SOT23 footprint consistency.
Supply support for MMBD2004S 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 and manufacturing operations across Asia and the US.
The MMBD2004S belongs to Diodes' high-voltage switching diode product line, engineered specifically for robust transient suppression and fast-switching power conversion in automotive and industrial environments.
FAQ
What is the maximum continuous forward current per diode in the MMBD2004S?
The MMBD2004S supports 225 mA continuous forward current per diode at 25°C ambient, derating linearly to zero at 150°C junction temperature. This rating assumes mounting on a 1-inch × 1-inch FR-4 PCB with 2 oz copper; actual usable current depends on board thermal design and airflow.
Is the MMBD2004S pin-compatible with standard SOT23 dual diodes like BAT54S?
Yes - MMBD2004S uses the standard SOT23-3 pinout (anode1–cathode–anode2), matching BAT54S, BAV99, and other anode-common dual diodes. However, its 300V rating and slower tRR versus BAT54S mean direct substitution requires verification of voltage and timing margins in the target circuit.
Does the MMBD2004S meet automotive qualification standards?
Yes - the MMBD2004S is qualified to AEC-Q101 Rev D for high-reliability automotive applications. It undergoes stress testing including HTGB, HTRB, TCT, and ESD per AEC requirements, and is rated for operation from –65°C to +150°C junction temperature.
How does the anode-common configuration affect circuit implementation?
The anode-common configuration places both anodes on pins 1 and 3, with the shared cathode on pin 2. This allows either series connection (anode1–cathode–anode2) for higher voltage blocking or parallel cathode routing for dual-path clamping - simplifying PCB layout in snubber and OR-ing applications without external wiring.
MMBD2004S 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:
- Discontinued at Digi-Key
- Diode Configuration:
- 1 Pair Series Connection
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 240 V
- Current - Average Rectified (Io) (per Diode):
- 225mA (DC)
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 100 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 100 nA @ 240 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MMBD2004S FAQ
1.How can I place an order for MMBD2004S through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBD2004S 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 MMBD2004S reliable?
The price and inventory of MMBD2004S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBD2004S is usually 5 days.
3.What payment methods are accepted for MMBD2004S?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBD2004S transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBD2004S?
MMBD2004S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBD2004S 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 MMBD2004S?
For technical support, including MMBD2004S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBD2004S requirements.
6.How does Aetrix verify that MMBD2004S is sourced from the original manufacturer or authorized distributors?
All MMBD2004S 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 MMBD2004S meets industry standards.
7.What is the process for return or replacement of MMBD2004S?
All MMBD2004S units undergo pre-shipment inspection (PSI). If there is an issue with MMBD2004S, 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 MMBD2004S part is unused and in its original packaging.
Return procedure for MMBD2004S:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBD2004S Tags
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