MMSZ5242B-7-F Diodes Inc. Zener Diode (Small Outline Diode) In Stock
Diodes Inc MMSZ5242B-7-F is a 12 V, 5% tolerance, 500 mW silicon Zener diode in a compact 2-pin SOD-123 SMT package with maximum dynamic impedance of 30 Ω for voltage regulation and clamping circuits.
- Manufacturer
- Diodes Inc.
- Package
- Small Outline Diode
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- MMSZ5242B-7-F Datasheet PDF
- Category
- Zener Diode
- Price
- From $0.0160(MOQ 100)
- Temp Range
- -65.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 12 V Zener voltage with 5% tolerance and 500 mW power dissipation for precise SMT voltage regulation
- Ultra-compact 2-pin SOD-123 package enables placement on high-density PCBs with minimal board area
- Maximum dynamic impedance of 30 Ω and forward voltage max of 0.9 V for stable clamping performance
- Silicon Zener diode construction, RoHS/Pb-free compliant (JESD-609 e3) for modern lead-free assemblies
Applications
The MMSZ5242B-7-F is used for voltage regulation and overvoltage clamping in power supply circuits, microcontroller I/O protection, and signal reference applications requiring a stable 12 V Zener reference at up to 500 mW dissipation. Its SOD-123 SMT footprint allows compact placement on densely populated boards in consumer electronics, industrial controls, and communication equipment. The 5% tolerance and 30 Ω maximum dynamic impedance ensure consistent clamping behavior across production lots.
Specifications
| Pbfree Code | Yes |
| Factory Lead Time | 12Weeks |
| YTEOL | 6.7 |
| Configuration | SINGLE |
| Diode Element Material | SILICON |
| Diode Type | ZENER DIODE |
| Dynamic Impedance-Max | 30Ω |
| Forward Voltage-Max (VF) | 0.9V |
| JESD-30 Code | R-PDSO-G2 |
| JESD-609 Code | e3 |
| Knee Impedance-Max | 600Ω |
| Number of Elements | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Polarity | UNIDIRECTIONAL |
| Power Dissipation-Max | 0.37W |
| Qualification Status | Not Qualified |
| Reference Voltage-Nom | 12V |
| Reverse Current-Max | 1 µA |
| Reverse Test Voltage | 9.1V |
| Surface Mount | YES |
| Technology | ZENER |
| Terminal Finish | MATTE TIN |
| Terminal Form | GULL WING |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 10 |
| Voltage Tol-Max | 5% |
| Working Test Current | 20mA |
| ## MMSZ5242B-7-F Alternates Showing results | Image |
| Package | Small Outline Diode |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8541.10.00.50 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MMSZ5242B-7-F:
suggested
Frequently Asked Questions
What is the Zener voltage and power rating of the MMSZ5242B-7-F?
The MMSZ5242B-7-F has a Zener voltage of 12 V with a 5% tolerance, and a power dissipation rating of 500 mW. These specifications make it suitable for voltage clamping and regulation tasks in consumer electronics, industrial I/O protection circuits, and communication board power rails operating around 12 V.
What SMT package does the MMSZ5242B-7-F use and how small is its PCB footprint?
The MMSZ5242B-7-F is housed in a 2-pin SOD-123 surface-mount package, one of the most compact single-diode SMT footprints available. The SOD-123 outline occupies minimal board space, making this 12 V 500 mW Zener diode easy to integrate into space-constrained PCB designs without compromising voltage clamping performance.
What is the maximum dynamic impedance of the MMSZ5242B-7-F and why does it matter for clamping circuits?
The MMSZ5242B-7-F has a maximum dynamic impedance of 30 Ω, which determines how much the Zener voltage varies with changing current in the breakdown region. A lower dynamic impedance results in a more stable 12 V clamping voltage under load current variations, which is critical for overvoltage protection on sensitive 12 V logic or analog signal lines.
Is the MMSZ5242B-7-F RoHS compliant and what is the expected lead time?
The MMSZ5242B-7-F is RoHS compliant and Pb-free, meeting JESD-609 e3 requirements for halogen-free, lead-free solder compatibility. The factory lead time from Diodes Inc. is approximately 12 weeks, so design teams sourcing this 12 V 500 mW SOD-123 Zener should plan procurement well in advance for production builds.
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About Diodes Inc.
Diodes Inc. is a leading electronic component manufacturer. FindMyChip sources Diodes Inc. ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
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Diode
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $0.0390 | $3.90 |
| 500+ | $0.0290 | $14.50 |
| 1000+ | $0.0250 | $25.00 |
| 12000+ | $0.0164 | $196.80 |
| 24000+ | $0.0162 | $388.32 |
| 48000+ | $0.0160 | $766.08 |
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