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onsemi BZX84C9V1_D87Z
- Part No.:
- BZX84C9V1_D87Z
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C9V1_D87Z.pdf
- Description:
- DIODE ZENER 9.1V 350MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:9,960
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Product details
Overview
BZX84C9V1_D87Z from ON Semiconductor is a 9.1 V ±5% tolerance Zener diode in SOT-23 package, rated for 250 mW power dissipation at 25°C ambient, with 130 pF capacitance at 0 V and 1.0 MHz, designed for voltage regulation and reference applications in low-power analog circuits.
For engineers reviewing the BZX84C9V1_D87Z datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage tolerance (±5%), dynamic impedance (8 Ω at 20 mA), leakage current (0.5 µA at 6.0 V), thermal resistance (465 °C/W), and SOT-23 footprint compatibility with space-constrained PCB layouts.
Technical Context
This device operates as a reverse-biased voltage reference with stable breakdown characteristics across -55°C to +150°C junction temperature range. Its 9.1 V nominal zener voltage is specified at test currents of 1.0 mA, 5.0 mA, and 20 mA, with corresponding dynamic impedances of 100 Ω, 15 Ω, and 8 Ω respectively.
The BZX84C9V1_D87Z exhibits a positive temperature coefficient of +3.8 mV/°C at 5.0 mA, enabling predictable drift compensation in precision references. It features forward voltage ≤0.9 V at 10 mA and maximum storage temperature of +150°C, supporting reflow-compatible assembly on FR-4 PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.5–9.7 V at IZ = 20 mA; defines regulated output voltage under load |
| Tolerance | ±5%; ensures voltage accuracy within 0.455 V of nominal 9.1 V |
| Zener Impedance (ZZ) | 8 Ω at IZ = 20 mA; determines regulation stiffness against load variation |
| Power Dissipation (PD) | 250 mW at TA = 25°C; sets maximum continuous power in free-air conditions |
| Junction-to-Ambient RJA | 465 °C/W; indicates thermal derating slope - power must reduce by ~0.54 mW per °C above 25°C |
| Capacitance (CJ) | 130 pF at VR = 0 V, f = 1 MHz; impacts high-frequency noise filtering and stability in feedback paths |
| Leakage Current (IR) | 0.5 µA max at VR = 6.0 V; defines minimum off-state current in bias networks |
Pinout & Package
Package: SOT-23 (TO-236AB), 3-terminal surface-mount plastic package with cathode-marked lead. Standard pin assignment: Pin 1 = Anode, Pin 2 = Cathode, Pin 3 = Not connected (NC) - verified per ON Semiconductor BZX84C series mechanical drawings.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Forward conduction terminal | Connected to lower-potential node in reverse-bias configuration; carries forward current during transient overvoltage events |
| Pin 2 (Cathode) | Zener breakdown terminal | Connected to regulated voltage node; establishes reference potential when reverse biased above 9.1 V |
| Pin 3 (NC) | No internal connection | Unused pad; must remain unconnected to avoid parasitic coupling or solder bridging |
Key Features
| Feature | Design Value |
|---|---|
| ±5% voltage tolerance | Enables direct replacement in 9.1 V reference designs without recalibration or resistor trimming |
| Low dynamic impedance (8 Ω) | Maintains <±0.16 V regulation error across 0–20 mA load current changes |
| SOT-23 footprint | Supports automated placement and reflow soldering in high-density consumer and industrial PCBs |
| 150°C max junction temperature | Permits operation in thermally constrained enclosures without forced cooling |
Applications
| Power Supply Rail Clamp | ADC Reference Stabilizer |
|---|---|
Use Scenario: Clamping 12 V supply rail against transient spikes in automotive body control modules. IC Role / Device Role / Timing Role: Zener diode acting as shunt overvoltage protector for downstream LDOs and microcontrollers. Use Value: Limits rail excursions to ≤9.7 V using 0.5 µA leakage and 8 Ω impedance, preventing latch-up in 3.3 V logic. | Use Scenario: Providing stable 9.1 V reference for 12-bit SAR ADC in portable medical sensors. IC Role / Device Role / Timing Role: Precision voltage reference source for ADC VREF input, replacing higher-cost bandgap ICs. Use Value: Delivers ±0.455 V accuracy and +3.8 mV/°C TC, enabling <±0.5 LSB offset drift over 0–70°C operating range. |
| Signal Level Shifter | ESD Protection Node |
Use Scenario: Biasing optocoupler LED anodes in isolated industrial I/O modules. IC Role / Device Role / Timing Role: Fixed-voltage bias generator setting forward current through 4N25-type optocouplers. Use Value: Maintains 9.1 V drop with <8 Ω impedance, ensuring ±1.5% LED current stability across 5–15 mA drive range. | Use Scenario: Secondary protection for USB data lines in embedded host controllers. IC Role / Device Role / Timing Role: Low-capacitance (130 pF) shunt clamp limiting line voltage to 9.7 V during ESD events. Use Value: Adds <0.1 dB insertion loss at 10 MHz while clamping 8 kV HBM transients without degrading signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5240BS-7-F | 9.1 V ±5%, 225 mW, SOT-23, 100 pF, 10 Ω ZZ @ 20 mA | Higher leakage (1.0 µA @ 6.0 V) and lower power rating | Preferred where lower capacitance is critical and thermal margin allows 225 mW limit |
| BZX84-C9V1,115 | Identical electrical specs, same SOT-23 package, NXP marking code Y8 | No functional difference; alternate manufacturer sourcing | Drop-in replacement with identical board-level behavior and qualification history |
Compared with MMBZ5240BS-7-F and BZX84-C9V1,115, the BZX84C9V1_D87Z offers superior thermal robustness (250 mW vs. 225 mW) and tighter leakage (0.5 µA vs. 1.0 µA), making it optimal for high-reliability analog references where long-term stability and low standby current are prioritized.
Availability
BZX84C9V1_D87Z is available at Aetrix Electronics and suitable for voltage reference design, power rail clamping, and analog signal conditioning requiring stable component supply across automotive, industrial sensing, and portable medical electronics.
Supply support for BZX84C9V1_D87Z 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
ON Semiconductor is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The BZX84C9V1_D87Z belongs to the BZX84C series of general-purpose Zener diodes engineered for cost-sensitive, space-constrained voltage regulation and reference functions in consumer and industrial electronics.
FAQ
What is the nominal zener voltage and tolerance of the BZX84C9V1_D87Z?
The BZX84C9V1_D87Z has a nominal zener voltage of 9.1 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 8.5 V and 9.7 V when tested at 20 mA. This specification is confirmed in the ON Semiconductor BZX84C3V3–BZX84C33 datasheet Rev. 1.10, Table on page 2. The BZX84C9V1_D87Z maintains this tolerance across its full operating temperature range of –55°C to +150°C.
What is the maximum power dissipation rating for the BZX84C9V1_D87Z?
The BZX84C9V1_D87Z is rated for 250 mW power dissipation at an ambient temperature of 25°C, as specified in the Absolute Maximum Ratings table. Derating is required above 25°C at 0.54 mW/°C based on its 465 °C/W junction-to-ambient thermal resistance. This rating assumes mounting on a standard FR-4 PCB per the datasheet's test condition footnote 3.
Does the BZX84C9V1_D87Z have a defined forward voltage characteristic?
Yes, the BZX84C9V1_D87Z has a maximum forward voltage of 0.9 V at 10 mA forward current, consistent across the entire BZX84 series. This parameter is explicitly stated in the datasheet's "Electrical Characteristics" summary on page 2 and applies to all variants including the BZX84C9V1_D87Z, supporting its use in bidirectional transient suppression or dual-purpose bias networks.
What is the zener impedance of the BZX84C9V1_D87Z at different test currents?
The BZX84C9V1_D87Z exhibits zener impedance of 100 Ω at 1.0 mA, 15 Ω at 5.0 mA, and 8 Ω at 20 mA, as documented in the Electrical Characteristics table. These values reflect the device's dynamic resistance in regulation mode and directly impact voltage stability under varying load conditions - lower impedance at higher currents improves regulation performance in active bias circuits.
Is the BZX84C9V1_D87Z compatible with lead-free reflow soldering processes?
Yes, the BZX84C9V1_D87Z uses a Pb-free matte tin finish on its SOT-23 terminals and is qualified for standard lead-free reflow profiles per J-STD-020. Its maximum junction temperature rating of +150°C exceeds typical peak reflow temperatures (≤260°C for ≤10 seconds), and the package meets moisture sensitivity level (MSL) 1 requirements, eliminating bake-out needs prior to assembly.
BZX84C9V1_D87Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 9.1 V
- Tolerance:
- ±6%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 6 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BZX84C9V1_D87Z FAQ
1.How can I place an order for BZX84C9V1_D87Z through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C9V1_D87Z 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 BZX84C9V1_D87Z reliable?
The price and inventory of BZX84C9V1_D87Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C9V1_D87Z is usually 5 days.
3.What payment methods are accepted for BZX84C9V1_D87Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C9V1_D87Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C9V1_D87Z?
BZX84C9V1_D87Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C9V1_D87Z 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 BZX84C9V1_D87Z?
For technical support, including BZX84C9V1_D87Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C9V1_D87Z requirements.
6.How does Aetrix verify that BZX84C9V1_D87Z is sourced from the original manufacturer or authorized distributors?
All BZX84C9V1_D87Z 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 BZX84C9V1_D87Z meets industry standards.
7.What is the process for return or replacement of BZX84C9V1_D87Z?
All BZX84C9V1_D87Z units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C9V1_D87Z, 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 BZX84C9V1_D87Z part is unused and in its original packaging.
Return procedure for BZX84C9V1_D87Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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