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Diodes Incorporated ZMM5265B-7
- Part No.:
- ZMM5265B-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- DO-213AC, MINI-MELF, SOD-80
- Datasheet:
-
ZMM5265B-7.pdf
- Description:
- DIODE ZENER 62V 500MW MINI MELF
- Quantity:
- Payment:
- Shipping:
Inventory:6,669
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Product details
Overview
ZMM5265B-7 from Diodes Incorporated is a 62 V, 500 mW surface-mount Zener diode in MiniMELF (DO-213AA) package, with ±3% tolerance (58.9–65.1 V), 185 Ω dynamic impedance at 2.0 mA test current, and +0.097 %/°C temperature coefficient-used for precision voltage reference and overvoltage protection in DC power rails of industrial sensor modules.
For engineers reviewing the ZMM5265B-7 datasheet, ZMM5265B-7 pinout, ZMM5265B-7 application, or ZMM5265B-7 equivalent, key selection criteria include zener voltage stability under thermal drift, low leakage (<0.1 µA at 47 V), junction capacitance (~2.5 pF), and compatibility with reflow-soldered MiniMELF footprint layouts on space-constrained PCBs.
Technical Context
This device operates as a two-terminal voltage regulator in reverse-bias mode, maintaining stable 62 V output across load variations when biased above its knee current (IZK = 0.25 mA). Its hemispheric glass package ensures hermetic sealing and low parasitic capacitance for high-frequency noise suppression.
Thermal resistance is 300 °C/W (junction-to-ambient), limiting continuous dissipation to 500 mW only at TA ≤ 50 °C per derating curve; pulse operation supports higher transient power with Tp ≤ 100 ms and duty cycle ≤ 0.01.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 62 V nominal, 58.9–65.1 V range at IZT = 2.0 mA - defines clamping threshold for overvoltage events |
| Power Dissipation (Pd) | 500 mW max at TA = 25 °C - sets upper limit for steady-state thermal design in sealed enclosures |
| Zener Impedance (ZZT) | 185 Ω at IZT = 2.0 mA - determines regulation accuracy under varying load current |
| Reverse Leakage (IR) | ≤0.1 µA at VR = 47 V - ensures minimal standby current in battery-backed circuits |
| Temp. Coefficient (TC) | +0.097 %/°C - quantifies voltage drift per degree rise; critical for temperature-stable references |
| Junction Capacitance (Cj) | ~2.5 pF at VR = 2.0 V - enables RF filtering without adding external capacitors |
| Operating Temp. Range | −65 to +175 °C - supports deployment in automotive under-hood and industrial motor control environments |
Pinout & Package
Package: MiniMELF (DO-213AA), hermetically sealed glass cylindrical case with cathode band marking; dimensions A = 3.30–3.70 mm (length), B = 1.30–1.60 mm (diameter), C = 0.28–0.50 mm (lead diameter); weight ≈ 0.034 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | High-side terminal in reverse-bias configuration | Connected to regulated node; voltage referenced to anode ground; polarity critical for correct clamping |
| Anode (unmarked end) | Low-side terminal / reference node | Typically tied to system ground or return path; forms complete bias loop with series resistor |
Key Features
| Feature | Design Value |
|---|---|
| MiniMELF glass package | Hermetic seal ensures long-term reliability in humid or corrosive environments without conformal coating |
| ±3% Zener voltage tolerance | Reduces need for post-production trimming in voltage reference designs for analog front-ends |
| Low temperature coefficient (+0.097 %/°C) | Enables <±1.2% total voltage drift over −40 to +125 °C ambient range in unheated enclosures |
| 500 mW power rating with defined RθJA | Allows direct thermal modeling using standard JEDEC board conditions without custom characterization |
| Cathode band polarity marking | Eliminates orientation errors during automated placement; compatible with AOI inspection systems |
Applications
| Industrial Sensor Signal Conditioning | Automotive Body Control Module (BCM) Power Rail Clamp |
|---|---|
Use Scenario: Stabilizing 62 V supply for piezoresistive pressure transducer excitation in factory-floor instrumentation. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference and overvoltage clamp on analog signal chain input rail. Use Value: Maintains excitation accuracy within ±0.5% despite 15 °C ambient swings and suppresses ESD transients up to ±8 kV contact discharge. |
Use Scenario: Protecting LIN bus interface ICs from load-dump surges in 12 V vehicle electrical systems with boosted auxiliary rails. IC Role / Device Role / Timing Role: Standby clamping element placed across 62 V auxiliary rail feeding CAN/LIN transceivers. Use Value: Limits surge voltage to ≤65.1 V during ISO 7637-2 Pulse 5a events, preventing latch-up in downstream logic. |
| Programmable Logic Controller (PLC) Analog Input Protection | Medical Infusion Pump Power Supervision |
Use Scenario: Guarding 4–20 mA loop receiver inputs against field-wiring faults and induced transients in industrial automation cabinets. IC Role / Device Role / Timing Role: Reverse-biased Zener connected between input and ground to clamp fault voltages before op-amp input stage. Use Value: Withstands repeated 100 V/100 ms transients per IEC 61000-4-4 Level 4 without parameter shift or degradation. |
Use Scenario: Providing fail-safe undervoltage detection threshold for microcontroller reset circuitry in Class II medical devices. IC Role / Device Role / Timing Role: Zener-based comparator reference in discrete brown-out detector monitoring 62 V backup battery rail. Use Value: Delivers <±1.5% threshold accuracy over full life cycle and meets IEC 60601-1 creepage requirements via MiniMELF isolation. |
Availability
ZMM5265B-7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, automotive power rail clamping, and medical device power supervision requiring stable component supply with full traceability and no obsolescence risk through 2030.
Supply support for ZMM5265B-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions for industrial, automotive, and consumer markets, with manufacturing ISO/TS 16949-certified facilities.
ZMM52xxB series belongs to Diodes' precision Zener portfolio designed for high-reliability voltage regulation in harsh-environment applications where hermetic packaging and tight TC control are mandatory.
FAQ
What is the maximum continuous reverse current the ZMM5265B-7 can handle without degradation?
The ZMM5265B-7 is rated for 500 mW power dissipation at 25 °C ambient. At its nominal 62 V zener voltage, this corresponds to ~8.06 mA average reverse current. Derating is required above 25 °C per Fig. 1; at 70 °C ambient, max continuous current drops to ~5.3 mA to stay within thermal limits.
Can ZMM5265B-7 be used in place of ZMM5264B or ZMM5266B in existing designs?
ZMM5265B-7 has a nominal 62 V zener voltage versus 60 V (ZMM5264B) and 68 V (ZMM5266B). Substitution requires verifying that the 2 V offset falls within system tolerance margins for clamping or reference functions-and confirming that 185 Ω ZZT meets dynamic regulation needs better than ZMM5264B's 170 Ω or ZMM5266B's 230 Ω.
Is the MiniMELF package compatible with standard SMT reflow profiles?
Yes-the MiniMELF package is qualified for lead-free reflow per J-STD-020, with peak temperatures up to 260 °C. Its glass body withstands thermal shock; recommended profile uses ramp-to-spike (RTS) with 60–120 sec above 217 °C and cooling rate ≤6 °C/sec to prevent microfractures.
Does ZMM5265B-7 have a SPICE model available for simulation?
A SPICE model is provided for ZMM5235B, ZMM5260B, and ZMM5262B in the official datasheet (DS30024 Rev. C-2), but no verified model is published for ZMM5265B-7. Engineers may scale parameters from ZMM5260B (43 V) or ZMM5262B (51 V) models using proportional VZ and ZZT adjustments, validated against measured IV curves.
ZMM5265B-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-213AC, MINI-MELF, SOD-80
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 62 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 185 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 47 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Mini MELF
ZMM5265B-7 FAQ
1.How can I place an order for ZMM5265B-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ZMM5265B-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 ZMM5265B-7 reliable?
The price and inventory of ZMM5265B-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZMM5265B-7 is usually 5 days.
3.What payment methods are accepted for ZMM5265B-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZMM5265B-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZMM5265B-7?
ZMM5265B-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZMM5265B-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 ZMM5265B-7?
For technical support, including ZMM5265B-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZMM5265B-7 requirements.
6.How does Aetrix verify that ZMM5265B-7 is sourced from the original manufacturer or authorized distributors?
All ZMM5265B-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 ZMM5265B-7 meets industry standards.
7.What is the process for return or replacement of ZMM5265B-7?
All ZMM5265B-7 units undergo pre-shipment inspection (PSI). If there is an issue with ZMM5265B-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 ZMM5265B-7 part is unused and in its original packaging.
Return procedure for ZMM5265B-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ZMM5265B-7 Tags
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