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Diodes Incorporated MMBZ5259BTS-7-F
- Part No.:
- MMBZ5259BTS-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Zener Diode Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
MMBZ5259BTS-7-F.pdf
- Description:
- DIODE ZENER ARRAY 39V SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:7,531
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Product details
Overview
MMBZ5259BTS-7-F from Diodes Incorporated is a triple-surface-mount Zener diode array in SOT363 package, providing three isolated 39 V ±5% Zener junctions with 3.2 mA test current, 80 Ω dynamic impedance at 3.2 mA, and 0.1 µA reverse leakage at 30 V, used for precision voltage reference and overvoltage clamping in compact power management circuits.
For engineers reviewing the MMBZ5259BTS-7-F datasheet, MMBZ5259BTS-7-F pinout, MMBZ5259BTS-7-F application, or MMBZ5259BTS-7-F equivalent, key selection criteria include nominal Zener voltage (39 V), tight tolerance (±5%), low leakage (<0.1 µA @ VR = 30 V), thermal resistance (625 °C/W), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This device integrates three electrically isolated Zener diodes in a single ultra-small SOT363 package, each operating independently with identical electrical characteristics. It uses silicon planar epitaxial construction to ensure stable breakdown voltage and low temperature coefficient across -65°C to +150°C operating range.
The array supports automated surface-mount assembly and complies with AEC-Q101 stress testing for high-reliability automotive applications. Its 200 mW total power dissipation and 625 °C/W junction-to-ambient thermal resistance require careful PCB layout per AP02001 guidelines to maintain rated performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 39 V nominal, 37.05–40.95 V range at IZT = 3.2 mA - ensures precise clamping within ±5% tolerance |
| Zener Impedance (ZZT) | 80 Ω max at IZT = 3.2 mA - maintains stable regulation under moderate load variation |
| Reverse Leakage (IR) | 0.1 µA max at VR = 30 V - enables low-power standby operation without significant bias current loss |
| Power Dissipation (PD) | 200 mW total - limits thermal rise on standard FR4 PCB with recommended pad layout |
| Thermal Resistance (RθJA) | 625 °C/W - defines junction temperature rise per milliwatt; requires thermal-aware layout for sustained operation |
| Operating Temperature | -65°C to +150°C - supports under-hood automotive and industrial environments without derating |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD |
Pinout & Package
Package: SOT363 - ultra-small 6-pin surface-mount plastic package (2.10 mm × 1.30 mm × 0.95 mm), UL 94V-0 rated, moisture sensitivity level 1, lead-free matte tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode of Diode 1 | Common cathode configuration not used; each diode has independent anode/cathode pair |
| A2 | Anode of Diode 2 | Enables independent connection of each Zener for multi-rail clamping or reference sharing |
| A3 | Anode of Diode 3 | Allows simultaneous protection of three signal or supply lines without cross-coupling |
| C1 | Cathode of Diode 1 | Connected to PCB trace for clamping to local ground or reference rail |
| C2 | Cathode of Diode 2 | Supports discrete routing to avoid shared impedance in mixed-signal systems |
| C3 | Cathode of Diode 3 | Permits individual biasing or series resistor placement per channel |
Key Features
| Feature | Design Value |
|---|---|
| Triple isolated Zener structure | Three independent 39 V Zener junctions in one SOT363 footprint - saves board space vs. discrete diodes |
| AEC-Q101 qualification | Validated for automotive under-hood use - eliminates need for additional reliability screening |
| Low reverse leakage | ≤0.1 µA at 30 V - minimizes quiescent current in battery-backed or low-power systems |
| Lead-free & halogen-free | Meets RoHS 2 and "Green" definitions (<900 ppm Br/Cl, <1000 ppm Sb) - satisfies global environmental compliance |
| Automated assembly compatible | SOT363 package with defined solderable terminals per MIL-STD-202 - supports high-yield reflow processes |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Clamping 39 V supply rail transients in BCM microcontroller power domains during load dump events. IC Role / Device Role / Timing Role: Voltage clamp protecting MCU I/O and regulator inputs from >40 V spikes. Use Value: Prevents latch-up or permanent damage using matched Zener thresholds across three critical rails. | Use Scenario: Providing stable 39 V reference for analog front-end gain calibration in 4–20 mA loop-powered sensors. IC Role / Device Role / Timing Role: Precision shunt reference enabling ratiometric ADC measurements. Use Value: Maintains ±5% voltage accuracy over temperature and time without external trimming. |
| Telecom Power Sequencing | Medical Diagnostic Equipment Bias Supply |
Use Scenario: Controlling startup sequencing of dual 39 V/12 V DC-DC converters via Zener-triggered enable signals. IC Role / Device Role / Timing Role: Threshold detector generating delayed enable pulses based on rail stabilization. Use Value: Ensures safe power-up order using inherent Zener turn-on hysteresis and low leakage. | Use Scenario: Stabilizing high-voltage bias for photomultiplier tube (PMT) amplifiers in portable ultrasound units. IC Role / Device Role / Timing Role: Low-noise shunt regulator supplying clean 39 V to analog signal chain. Use Value: Delivers <0.1 µA leakage and 80 Ω impedance to minimize signal distortion and baseline drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMF39A (ON Semiconductor) | Single 39 V Zener in SOD-123FL; no triple-array configuration | Requires three separate placements; higher board area and assembly cost | Select when only one clamping node is needed or board layout favors discrete placement |
| BZX84-C39 (Nexperia) | Single 39 V Zener in SOT23; ±5% tolerance but no AEC-Q101 qualification | Lacks automotive qualification; unsuitable for safety-critical modules without additional validation | Select for cost-sensitive consumer applications where AEC-Q101 is not mandated |
Compared with SMF39A and BZX84-C39, MMBZ5259BTS-7-F delivers space savings through triple integration, automotive-grade reliability out-of-box, and guaranteed parametric matching across all three diodes-critical for multi-rail protection and reference sharing.
Availability
MMBZ5259BTS-7-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, telecom power sequencing, and medical diagnostic equipment requiring stable component supply and AEC-Q101-compliant Zener clamping.
Supply support for MMBZ5259BTS-7-F 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.
This part belongs to the MMBZ52xxBTS series of triple Zener arrays designed specifically for space-constrained, high-reliability voltage reference and transient suppression in automotive and industrial systems.
FAQ
What is the maximum power dissipation for MMBZ5259BTS-7-F?
The absolute maximum power dissipation is 200 mW at TA = +25°C on FR4 PCB with the recommended pad layout per AP02001. Derating is required above 25°C ambient, following the linear curve in Figure 1: 0.32 mW/°C reduction beyond 25°C, down to zero at 150°C.
Is MMBZ5259BTS-7-F suitable for automotive applications?
Yes - it is qualified to AEC-Q101 standards, including high-temperature operating life (HTOL), temperature cycling (TCT), and electrostatic discharge (ESD) testing. Its -65°C to +150°C operating range and halogen-free "Green" construction meet automotive OEM requirements for under-hood and chassis-mounted modules.
How are the three Zener diodes arranged internally?
The device contains three fully isolated Zener junctions in a common SOT363 package, with dedicated anode (A1/A2/A3) and cathode (C1/C2/C3) terminals. No internal connection exists between diodes - each operates independently with identical 39 V ±5% characteristics and matched thermal behavior.
What is the Zener test current and why does it matter?
Zener voltage is specified at IZT = 3.2 mA, which balances measurement stability and self-heating effects. Using this current ensures repeatable VZ readings and aligns with the 80 Ω dynamic impedance specification. Operating significantly below 3.2 mA increases impedance and degrades regulation accuracy.
MMBZ5259BTS-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Configuration:
- 3 Independent
- Voltage - Zener (Nom) (Vz):
- 39 V
- Tolerance:
- ±5%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 30 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363
MMBZ5259BTS-7-F FAQ
1.How can I place an order for MMBZ5259BTS-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ5259BTS-7-F 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 MMBZ5259BTS-7-F reliable?
The price and inventory of MMBZ5259BTS-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBZ5259BTS-7-F is usually 5 days.
3.What payment methods are accepted for MMBZ5259BTS-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ5259BTS-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ5259BTS-7-F?
MMBZ5259BTS-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ5259BTS-7-F 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 MMBZ5259BTS-7-F?
For technical support, including MMBZ5259BTS-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5259BTS-7-F requirements.
6.How does Aetrix verify that MMBZ5259BTS-7-F is sourced from the original manufacturer or authorized distributors?
All MMBZ5259BTS-7-F 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 MMBZ5259BTS-7-F meets industry standards.
7.What is the process for return or replacement of MMBZ5259BTS-7-F?
All MMBZ5259BTS-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5259BTS-7-F, 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 MMBZ5259BTS-7-F part is unused and in its original packaging.
Return procedure for MMBZ5259BTS-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ5259BTS-7-F Tags
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