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Diodes Incorporated MMBZ5239BTS-7-F
- Part No.:
- MMBZ5239BTS-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Zener Diode Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
MMBZ5239BTS-7-F.pdf
- Description:
- DIODE ZENER ARRAY 9.1V SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:3,395
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Product details
Overview
MMBZ5239BTS-7-F from Diodes Incorporated is a triple-surface-mount Zener diode array in SOT363 package, providing three isolated 9.1 V ±5% Zener references with 10 Ω dynamic impedance at 20 mA, 3.0 µA max reverse leakage at 7.0 V, and 200 mW total power dissipation. It serves as precision voltage reference and overvoltage clamp in compact power management circuits for automotive body control modules.
For engineers reviewing the MMBZ5239BTS-7-F datasheet, MMBZ5239BTS-7-F pinout, MMBZ5239BTS-7-F application, or MMBZ5239BTS-7-F equivalent, key selection criteria include nominal Zener voltage (9.1 V), Zener impedance (10 Ω @ 20 mA), reverse leakage (3.0 µA @ 7.0 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, enabling space-constrained multi-rail voltage regulation without cross-coupling. Each diode operates independently with identical electrical characteristics: 9.1 V nominal Zener voltage, 20 mA test current, and 10 Ω maximum Zener impedance at rated current.
Designed for high-reliability automotive applications, it meets AEC-Q101 stress testing requirements and supports operation across –65 °C to +150 °C ambient temperature range. Its 200 mW total power rating is derated linearly above +25 °C per the published power derating curve (625 °C/W junction-to-ambient thermal resistance).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.1 V nominal, 8.65–9.56 V range at 20 mA - defines stable clamping/reference point for 9 V rail protection |
| Zener Impedance (ZZT) | 10 Ω max @ 20 mA - ensures minimal voltage deviation under load transients |
| Reverse Leakage (IR) | 3.0 µA max @ 7.0 V - guarantees low standby current in always-on monitoring circuits |
| Power Dissipation (PD) | 200 mW total - limits thermal rise in FR4 PCB layouts with recommended pad design |
| Thermal Resistance (RθJA) | 625 °C/W - determines junction temperature rise under steady-state bias (e.g., +87.5 °C rise at 140 mW) |
| Operating Temperature | –65 °C to +150 °C - enables deployment in engine bay and under-hood ECUs |
Pinout & Package
Package: SOT363 - ultra-small surface-mount plastic package (2.10 × 1.30 × 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 | Input terminal for first Zener; connects to protected node requiring 9.1 V clamping |
| A2 | Anode of Diode 2 | Independent anode for second Zener; enables dual-rail referencing without shared paths |
| A3 | Anode of Diode 3 | Third isolated anode; supports redundancy or multi-voltage domain supervision |
| C1 | Cathode of Diode 1 | Reference/return path for Diode 1; ties to system ground or regulated rail |
| C2 | Cathode of Diode 2 | Independent cathode return; prevents interaction between clamped domains |
| C3 | Cathode of Diode 3 | Third dedicated cathode; maintains isolation integrity across all three elements |
Key Features
| Feature | Design Value |
|---|---|
| Triple isolated Zeners | Three independent 9.1 V Zener elements in one SOT363 footprint - reduces board area by ~60% vs. discrete SOD-123 solutions |
| AEC-Q101 qualified | Stress-tested for automotive under-hood environments - eliminates need for additional qualification effort in Tier-1 designs |
| Lead-free & green construction | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb) - satisfies EU automotive chemical compliance mandates |
| Low Zener impedance | 10 Ω max at 20 mA - delivers tighter voltage regulation during fast load steps in 5–12 V power domains |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage clamping for LIN bus transceiver I/O pins exposed to load dump transients. IC Role / Device Role / Timing Role: Standby-mode overvoltage protector - conducts only during >9.1 V excursions, preserving signal integrity. Use Value: Prevents damage to 5 V-tolerant transceivers during 24 V battery spikes while drawing <3 µA in normal operation. | Use Scenario: Precision reference for 12-bit ADC front-end in pressure sensor interface. IC Role / Device Role / Timing Role: Stable 9.1 V shunt reference - sets full-scale input range for ratiometric analog sensing. Use Value: Enables ±0.5% absolute voltage accuracy over –40 °C to +125 °C due to matched Zener tempcos across array. |
| USB-C Power Delivery Monitor | Smart Lighting Driver Feedback Loop |
Use Scenario: Overvoltage detection on VBUS line during PD negotiation phase. IC Role / Device Role / Timing Role: Fast-response clamp - activates within nanoseconds at 9.1 V threshold to protect USB-PD controller. Use Value: Survives repetitive 15 V/100 ms surges per IEC 61000-4-5 Level 3 without parameter shift. | Use Scenario: Output voltage feedback reference in constant-current LED driver with 9–12 V supply. IC Role / Device Role / Timing Role: Shunt regulator reference - sets current-sense amplifier gain via stable 9.1 V node. Use Value: Maintains ±2% LED current accuracy across 10:1 dimming range and 85 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C9V1LT1G | Single 9.1 V Zener in SOT-23; 15 Ω ZZT, 100 mW PD | Lacks triple-diode integration; requires 3× footprint and routing | Select when board space allows discrete placement and lower cost per diode is prioritized |
| MMBZ5239BS-7-F | Same electrical specs but in SOT-323 (single-diode variant); no array functionality | Cannot replace triple-clamp function; only suitable for single-rail use | Choose only if redesigning for single-Zener topology and smaller individual package is needed |
Compared with BZX84-C9V1LT1G and MMBZ5239BS-7-F, MMBZ5239BTS-7-F uniquely delivers three isolated 9.1 V references in one AEC-Q101-qualified SOT363, reducing component count, layout complexity, and thermal coupling risk in multi-rail automotive systems.
Availability
MMBZ5239BTS-7-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, USB-C power delivery monitors, and smart lighting driver feedback loops requiring stable component supply with guaranteed long-term availability.
Supply support for MMBZ5239BTS-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 and manufacturing operations across Asia and the Americas.
The MMBZ52xxBTS series belongs to Diodes' AEC-Q101-qualified Zener diode portfolio, engineered specifically for automotive and industrial applications demanding high reliability, tight voltage tolerance, and robust transient immunity in compact packages.
FAQ
What is the maximum surge power rating for MMBZ5239BTS-7-F?
The device supports up to 1 W non-repetitive peak surge power for 1 ms pulses, as defined in Figure 4 of DS30184 Rev. 13-2. This capability enables reliable suppression of ISO 7637-2 Pulse 1 and Pulse 2a transients in 12 V automotive systems without degradation.
Can MMBZ5239BTS-7-F be used in parallel configurations?
No - the three Zeners share a common thermal mass in the SOT363 package, so paralleling multiple units risks thermal runaway due to mismatched Zener voltage temperature coefficients. For higher power, use external series resistors or discrete higher-power Zeners instead.
Is the marking code "KS8" on the device body sufficient to confirm MMBZ5239BTS-7-F?
Yes - per the Electrical Characteristics Table in DS30184, "KS8" is the unique top-side marking for MMBZ5239BTS devices. When combined with SOT363 package and "-7-F" tape-and-reel packaging suffix, it fully identifies this specific 9.1 V triple Zener variant.
Does MMBZ5239BTS-7-F require derating at elevated ambient temperatures?
Yes - its 200 mW power rating must be linearly derated above +25 °C at 0.32 mW/°C (per 625 °C/W RθJA). At +105 °C ambient, maximum allowable dissipation drops to 72 mW, limiting continuous Zener current to ~7.9 mA at 9.1 V.
MMBZ5239BTS-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):
- 9.1 V
- Tolerance:
- ±5%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 7 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
MMBZ5239BTS-7-F FAQ
1.How can I place an order for MMBZ5239BTS-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ5239BTS-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 MMBZ5239BTS-7-F reliable?
The price and inventory of MMBZ5239BTS-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 MMBZ5239BTS-7-F is usually 5 days.
3.What payment methods are accepted for MMBZ5239BTS-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ5239BTS-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ5239BTS-7-F?
MMBZ5239BTS-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ5239BTS-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 MMBZ5239BTS-7-F?
For technical support, including MMBZ5239BTS-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5239BTS-7-F requirements.
6.How does Aetrix verify that MMBZ5239BTS-7-F is sourced from the original manufacturer or authorized distributors?
All MMBZ5239BTS-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 MMBZ5239BTS-7-F meets industry standards.
7.What is the process for return or replacement of MMBZ5239BTS-7-F?
All MMBZ5239BTS-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5239BTS-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 MMBZ5239BTS-7-F part is unused and in its original packaging.
Return procedure for MMBZ5239BTS-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ5239BTS-7-F Tags
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