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Diodes Incorporated BZX84C7V5W-7
- Part No.:
- BZX84C7V5W-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84C7V5W-7.pdf
- Description:
- DIODE ZENER 7.5V 200MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:3,498
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Product details
Overview
BZX84C7V5W-7 from Diodes Incorporated is a 7.5 V, 200 mW surface-mount Zener diode in SOT-323 package, with nominal zener voltage 7.5 V (min 7.0 V, max 7.9 V at IZT = 5 mA), zener impedance 15 Ω at 5 mA, and reverse current ≤1.0 µA at 5.0 V, used for precision voltage regulation and reference in low-power analog circuits.
For engineers reviewing the BZX84C7V5W-7 datasheet, BZX84C7V5W-7 pinout, BZX84C7V5W-7 application, or BZX84C7V5W-7 equivalent, key selection criteria include zener voltage tolerance (±0.5 V), low dynamic impedance (15 Ω), thermal resistance (625 K/W), RoHS-compliant lead-free plating, and SOT-323 footprint compatibility with high-density PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load or supply conditions. It features planar die construction for consistent parametric performance and low leakage (≤1.0 µA at VR = 5.0 V).
Its temperature coefficient of +2.5 to +5.3 mV/°C at IZT = 5 mA indicates positive drift with rising temperature-critical for biasing networks where thermal stability must be modeled. Power derating begins above 25°C ambient per the defined 625 K/W RθJA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.5 V nominal, 7.0–7.9 V range at 5 mA - defines regulated output voltage tolerance in reference circuits |
| Power Dissipation (PD) | 200 mW at TA = 25°C - limits maximum continuous power in compact SOT-323 layout without forced cooling |
| Zener Impedance (ZZT) | 15 Ω at IZT = 5 mA - determines output voltage variation under load current changes |
| Reverse Current (IR) | ≤1.0 µA at VR = 5.0 V - ensures minimal quiescent current in standby-biased regulator stages |
| Thermal Resistance (RθJA) | 625 K/W - quantifies junction-to-ambient temperature rise per watt, critical for thermal design on FR4 boards |
| Temperature Coefficient | +2.5 to +5.3 mV/°C at 5 mA - specifies voltage drift direction and magnitude over operating temperature range |
Pinout & Package
Package: SOT-323 - ultra-small surface-mount plastic case (2.0–2.2 mm length × 1.15–1.35 mm width × 0.25–0.40 mm height), UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / cathode reference point in reverse-bias configuration | Connected to lower-potential node when used as shunt regulator; polarity marked on top view diagram |
| Cathode | Zener breakdown terminal / voltage reference output | Connected to regulated rail; carries reverse current during regulation; marking code "KR6" identifies this device |
| Case / Heat Sink | Non-electrical mechanical interface | No internal connection; serves only as thermal path and mounting surface; not electrically isolated |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Enables tight VZ tolerance control and repeatable ZZT across production lots |
| Lead-free / RoHS-compliant plating | Matte tin finish over Alloy 42 leadframe meets environmental compliance without sacrificing solderability |
| "Green" molding compound | Halogen-free encapsulant (post-2006 date codes) supports end-product eco-certifications |
| SOT-323 footprint | 0.65 mm pitch, 2.2 mm × 1.35 mm body enables high-density placement in space-constrained designs |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 7.5 V reference for ADC biasing or op-amp feedback networks in battery-powered sensor nodes. IC Role / Device Role / Timing Role: Shunt voltage reference maintaining fixed potential despite input ripple or load variation. Use Value: Low 15 Ω zener impedance minimizes output voltage shift under ±0.5 mA load changes, improving measurement accuracy. | Use Scenario: Protecting microcontroller I/O pins from transient overvoltage events on 5 V logic lines. IC Role / Device Role / Timing Role: Reverse-biased clamping element diverting surge current above 7.5 V threshold. Use Value: Fast response to transients due to low junction capacitance (~30 pF at 1 V), limiting voltage overshoot to safe levels. |
| Current Source Bias | Signal Level Shifting |
Use Scenario: Generating constant current for LED biasing or phototransistor collectors in optical isolation circuits. IC Role / Device Role / Timing Role: Fixed-voltage drop element enabling I = (VIN − 7.5 V)/R calculation. Use Value: Tight 7.0–7.9 V VZ tolerance ensures predictable current within ±6.7% across units at 5 mA. | Use Scenario: Translating 3.3 V logic signals to 7.5 V compatible levels for legacy analog interface ICs. IC Role / Device Role / Timing Role: DC-level translator using forward conduction (0.9 V VF) and reverse clamp (7.5 V) thresholds. Use Value: Dual-mode operation (forward diode + reverse Zener) enables bidirectional level translation without external resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ4689-7-F | Zener voltage 7.5 V (same nominal), but tighter 7.1–7.9 V tolerance; 300 mW PD; SOD-123 package | Larger footprint and higher power rating suit higher-current regulation; less suitable for ultra-dense layouts | Select when >200 mW dissipation or improved VZ consistency is required, accepting larger board area |
| BZX84-C7V5 | Same electrical specs, but non-RoHS SOT-23 package with leaded plating; no "green" compound | Not compliant with modern environmental directives; incompatible with lead-free reflow profiles | Use only in legacy repair or non-RoHS exempt applications where regulatory compliance is not mandated |
Compared with MMSZ4689-7-F and BZX84-C7V5, BZX84C7V5W-7 uniquely balances RoHS compliance, SOT-323 miniaturization, and verified 15 Ω ZZT, making it optimal for new designs prioritizing density and environmental standards over raw power headroom or legacy process compatibility.
Availability
BZX84C7V5W-7 is available at Aetrix Electronics and suitable for precision voltage reference, overvoltage protection, current source biasing, and signal level shifting requiring stable component supply in high-mix, low-volume production.
Supply support for BZX84C7V5W-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, cost-optimized components for industrial, computing, and consumer markets.
The BZX84 series belongs to Diodes' standard Zener diode product line, designed specifically for compact, low-power voltage regulation and protection in space-constrained PCBs with strict environmental compliance requirements.
FAQ
What is the maximum reverse voltage before breakdown for BZX84C7V5W-7?
The specified zener voltage is 7.5 V nominal, with a guaranteed breakdown range of 7.0 V to 7.9 V at test current IZT = 5 mA. Below 7.0 V, reverse leakage remains ≤1.0 µA at 5.0 V; sustained operation below 7.0 V does not trigger regulation but avoids significant conduction.
Can BZX84C7V5W-7 be used in parallel for higher current handling?
No-zener diodes exhibit manufacturing variations in VZ and dynamic impedance, causing current imbalance when paralleled. Even matched units risk thermal runaway due to positive temperature coefficient. Use a single higher-power Zener or active regulation instead.
Is the SOT-323 package thermally adequate for 200 mW dissipation?
Yes, but only at TA = 25°C with recommended FR4 pad layout. Thermal resistance is 625 K/W, so junction temperature rises ~125°C at full 200 mW-exceeding 125°C max rating. Derate linearly above 25°C ambient per the published power derating curve.
Does the "KR6" marking indicate anything beyond part identification?
Yes-"KR6" is the unique Diodes Incorporated marking code for BZX84C7V5W-7, confirming nominal 7.5 V zener voltage. The "K" prefix denotes the BZX84C series, "R" indicates voltage grade, and "6" maps to 7.5 V per the manufacturer's internal coding table.
BZX84C7V5W-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±6%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 5 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BZX84C7V5W-7 FAQ
1.How can I place an order for BZX84C7V5W-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C7V5W-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 BZX84C7V5W-7 reliable?
The price and inventory of BZX84C7V5W-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C7V5W-7 is usually 5 days.
3.What payment methods are accepted for BZX84C7V5W-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C7V5W-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C7V5W-7?
BZX84C7V5W-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C7V5W-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 BZX84C7V5W-7?
For technical support, including BZX84C7V5W-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C7V5W-7 requirements.
6.How does Aetrix verify that BZX84C7V5W-7 is sourced from the original manufacturer or authorized distributors?
All BZX84C7V5W-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 BZX84C7V5W-7 meets industry standards.
7.What is the process for return or replacement of BZX84C7V5W-7?
All BZX84C7V5W-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C7V5W-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 BZX84C7V5W-7 part is unused and in its original packaging.
Return procedure for BZX84C7V5W-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C7V5W-7 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
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