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onsemi MMBZ15VDLT1G
- Part No.:
- MMBZ15VDLT1G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBZ15VDLT1G.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:47,192
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Product details
Overview
MMBZ15VDLT1G from onsemi is a dual common-cathode 15 V Zener diode array in SOT-23 package, designed for bidirectional or unidirectional transient voltage suppression and ESD protection. It delivers 40 W peak pulse power (1.0 ms), clamps at 21.2 V @ 1.9 A, and exhibits <100 nA leakage at 12.8 V reverse bias - deployed in CAN bus interfaces, USB lines, and I/O port protection.
For engineers reviewing the MMBZ15VDLT1G datasheet, pinout, applications, or equivalent options, key selection criteria include bidirectional clamping capability, 15 V nominal breakdown with ±0.7 V tolerance, Class 3B HBM ESD rating (>16 kV), and dual-line protection in a single 2.9 × 1.3 mm footprint.
Technical Context
This device integrates two monolithic silicon Zener junctions sharing a common cathode (Pin 3), enabling either independent unidirectional protection of two signal lines (Pins 1–3 and 2–3) or combined bidirectional protection across Pins 1–2. Its thermal resistance is 556 °C/W on FR-5 board and 417 °C/W on alumina substrate.
The MMBZ15VDLT1G operates over −55 °C to +150 °C junction temperature, supports 260 °C soldering for 10 s, and meets IEC61000-4-2 Level 4 (±30 kV contact discharge). Its 12 mV/°C temperature coefficient ensures stable clamping under thermal variation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 15 V (breakdown at 1.0 mA test current; min 14.3 V, max 15.8 V) |
| Clamping Voltage | 21.2 V @ 1.9 A peak pulse current - defines maximum voltage seen by protected circuit during surge |
| Peak Pulse Power | 40 W @ 1.0 ms per Figure 5 waveform - enables robust transient suppression without thermal runaway |
| ESD Rating | Class 3B HBM (>16 kV) and IEC61000-4-2 Level 4 (±30 kV contact) - exceeds industrial and automotive ESD immunity requirements |
| Leakage Current | <100 nA @ 12.8 V reverse bias - minimizes standby power loss and signal loading in high-impedance circuits |
| Package | SOT-23 (TO-236), 2.90 × 1.30 × 1.00 mm - enables high-density PCB layout for multi-line I/O protection |
Pinout & Package
SOT-23 package (Case 318, Style 9) with void-free thermosetting plastic body, Pb-free finish, and UL 94 V-0 flammability rating. Maximum solder temperature: 260 °C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | First Zener anode - connects to Line 1 for unidirectional protection or forms one side of bidirectional path |
| Pin 2 | Anode 2 | Second Zener anode - connects to Line 2; paired with Pin 1 for bidirectional clamp between two lines |
| Pin 3 | Cathode (common) | Shared cathode node - ties both Zeners to reference (e.g., ground or supply rail) for coordinated clamping |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-cathode topology | Enables simultaneous protection of two signal lines with one footprint - reduces BOM count and PCB area vs. discrete diodes |
| Bidirectional configuration support | Pins 1 and 2 function as symmetric terminals for differential or data-line protection (e.g., CAN, RS-485) |
| Low-temperature-coefficient Zener | 12 mV/°C drift - maintains tight clamping window across automotive and industrial temperature ranges |
| High-surge-current capability | 1.9 A peak pulse current - sustains repeated transients per ISO 7637-2 and IEC 61000-4-5 test profiles |
Applications
| Automotive CAN Bus Protection | USB 2.0 Data Line ESD Clamp |
|---|---|
Use Scenario: Protecting single-wire CAN transceivers against load dump, ESD, and coupled transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed between CAN_H and ground, leveraging dual-anode symmetry. Use Value: Clamps surges to ≤21.2 V while maintaining signal integrity up to 1 Mbps - validated per SAE J2411. |
Use Scenario: Safeguarding USB D+ and D− lines from human-body-model ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Dual unidirectional Zener clamp - Pin 1–3 protects D+, Pin 2–3 protects D−, sharing common ground return. Use Value: Achieves >16 kV HBM and ±30 kV IEC61000-4-2 compliance without degrading 480 Mbps data eye. |
| Industrial Sensor Interface Protection | RS-232/RS-485 Transceiver I/O Clamp |
Use Scenario: Shielding analog sensor outputs (e.g., 4–20 mA loops or thermocouple amplifiers) from field-induced surges. IC Role / Device Role / Timing Role: Unidirectional Zener shunt - each anode tied to separate sensor channel, cathode grounded. Use Value: Limits fault voltage to 21.2 V during 40 W transients, preventing op-amp input stage damage and preserving measurement accuracy. |
Use Scenario: Adding secondary surge margin to RS-485 transceivers in factory automation networks exposed to motor switching noise. IC Role / Device Role / Timing Role: Bidirectional clamp between A/B differential pair - Pins 1 and 2 connected to A and B, Pin 3 to ground. Use Value: Extends system-level surge immunity beyond transceiver's native rating - handles 1.9 A pulses without latch-up or parametric shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-Zener ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ15VDLT3G | Same electrical specs and SOT-23 package; differs only in tape-and-reel quantity (10,000 pcs vs. 3,000 pcs for MMBZ15VDLT1G) | No functional difference - identical placement, routing, and performance in all designs | Select MMBZ15VDLT3G for high-volume production runs requiring larger reels and lower handling cost per unit |
| SZMMBZ15VDLT1G | AEC-Q101 qualified, PPAP-capable, with automotive-grade traceability and control; otherwise electrically identical | Required for automotive OEM applications where qualification and change control are mandated | Choose SZMMBZ15VDLT1G when designing for automotive ECUs or systems requiring certified automotive reliability documentation |
Compared with MMBZ15VDLT1G, MMBZ15VDLT3G offers identical protection performance with optimized logistics for volume manufacturing, while SZMMBZ15VDLT1G adds AEC-Q101 compliance for automotive use - neither requires PCB or schematic changes.
Availability
MMBZ15VDLT1G is available at Aetrix Electronics and suitable for automotive CAN bus protection, USB 2.0 interface hardening, and industrial sensor I/O safeguarding requiring stable component supply and long-term lifecycle support.
Supply support for MMBZ15VDLT1G 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The MMBZxxVxL series targets compact, high-reliability transient suppression - engineered specifically for space-constrained ESD and surge protection in automotive networking, industrial I/O, and portable electronics.
FAQ
What is the exact Zener breakdown voltage tolerance for MMBZ15VDLT1G?
The MMBZ15VDLT1G has a specified breakdown voltage range of 14.3 V to 15.8 V at 1.0 mA test current (IT), with a nominal value of 15 V. This ±0.7 V tolerance reflects manufacturing consistency under standard test conditions at 25 °C and is confirmed in the Electrical Characteristics table on page 3 of the official onsemi datasheet.
Can MMBZ15VDLT1G be used in bidirectional signal line protection?
Yes, the MMBZ15VDLT1G supports bidirectional operation by connecting Pins 1 and 2 across a differential pair (e.g., CAN_H/CAN_L) and Pin 3 to ground. Its dual common-cathode structure allows symmetrical clamping in both directions - verified in the Typical Applications section (Figure 7) and supported by its 40 W peak pulse rating in bidirectional mode.
What is the maximum clamping voltage of MMBZ15VDLT1G under surge conditions?
The MMBZ15VDLT1G clamps to a maximum of 21.2 V when subjected to a 1.9 A peak pulse current (IPP), as defined by the Figure 5 waveform (1.0 ms pulse width). This value is measured at TA = 25 °C and represents the upper voltage limit imposed on protected circuitry during standardized transient events.
Is MMBZ15VDLT1G RoHS-compliant and halogen-free?
Yes, MMBZ15VDLT1G is explicitly marked as Pb-Free in the datasheet and complies with RoHS Directive 2011/65/EU. The device uses a corrosion-resistant, easily solderable finish and carries a UL 94 V-0 flammability rating - confirming halogen-free molding compound per industry-standard definitions.
How does MMBZ15VDLT1G differ from MMBZ15VDLT3G?
The MMBZ15VDLT1G and MMBZ15VDLT3G share identical electrical specifications, thermal characteristics, and SOT-23 mechanical design. Their sole difference is packaging: MMBZ15VDLT1G ships in 3,000-piece tape-and-reel format, while MMBZ15VDLT3G uses 10,000-piece reels - enabling higher throughput for automated assembly without any design or performance trade-offs.
MMBZ15VDLT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 1.9A
- Power - Peak Pulse:
- 40W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3 (TO-236)
MMBZ15VDLT1G FAQ
1.How can I place an order for MMBZ15VDLT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ15VDLT1G 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 MMBZ15VDLT1G reliable?
The price and inventory of MMBZ15VDLT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBZ15VDLT1G is usually 5 days.
3.What payment methods are accepted for MMBZ15VDLT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ15VDLT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ15VDLT1G?
MMBZ15VDLT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ15VDLT1G 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 MMBZ15VDLT1G?
For technical support, including MMBZ15VDLT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ15VDLT1G requirements.
6.How does Aetrix verify that MMBZ15VDLT1G is sourced from the original manufacturer or authorized distributors?
All MMBZ15VDLT1G 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 MMBZ15VDLT1G meets industry standards.
7.What is the process for return or replacement of MMBZ15VDLT1G?
All MMBZ15VDLT1G units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ15VDLT1G, 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 MMBZ15VDLT1G part is unused and in its original packaging.
Return procedure for MMBZ15VDLT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ15VDLT1G Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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