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Nexperia USA Inc. BZB84-C27-QR
- Part No.:
- BZB84-C27-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZB84-C27-QR.pdf
- Description:
- BZB84-C27-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,392
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Product details
Overview
BZB84-C27-QR from Nexperia is a dual Zener diode in SOT23 package with common-anode configuration, nominal 27 V working voltage (±5 % tolerance), 300 mW total power dissipation, and AEC-Q101 qualification for automotive voltage regulation. It provides precise dual-voltage reference in compact surface-mount form for space-constrained power rail stabilization.
For engineers reviewing the BZB84-C27-QR datasheet, BZB84-C27-QR pinout, BZB84-C27-QR application, or BZB84-C27-QR equivalent, key selection criteria include Zener voltage tolerance, non-repetitive surge capability (1.0 A peak reverse current), thermal resistance (100 K/W junction-to-solder-point), and dual-cathode/common-anode topology for bidirectional clamping or dual-rail referencing.
Technical Context
This dual Zener diode integrates two independent 27 V Zener elements sharing a common anode terminal, enabling simultaneous regulation or clamping of two separate circuits from a single node. Its ±5 % voltage tolerance (25.1 V to 28.9 V at IZ = 2 mA) and 50 Ω typical differential resistance support stable reference performance under moderate load variation.
The device operates across –55 °C to +150 °C ambient, with thermal resistance from junction to solder point rated at 100 K/W-critical for reliability in automotive under-hood environments. Non-repetitive peak reverse current is 1.0 A (100 µs square wave, Tj = 25 °C), supporting transient overvoltage suppression without latch-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VZ) | 27 V nominal, 25.1–28.9 V range at IZ = 2 mA - defines regulated output voltage window under standard test conditions |
| Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - maximum continuous power handling on FR4 PCB with standard footprint |
| Non-repetitive Peak Current (IZSM) | 1.0 A for 100 µs - enables transient surge suppression without permanent degradation |
| Differential Resistance (rdif) | 300 Ω max at IZ = 2 mA - quantifies voltage regulation stiffness against load current changes |
| Reverse Current (IR) | 0.05 µA max at VR = 21.6 V - ensures low leakage in high-impedance bias networks |
| Junction Temperature (Tj) | 150 °C absolute maximum - sets upper thermal limit for sustained operation |
| Package | SOT23 - 3-terminal surface-mount outline (2.9 × 1.3 × 1.0 mm) compatible with automated assembly |
Pinout & Package
SOT23 plastic surface-mount package with 1.9 mm lead pitch, 2.9 mm × 1.3 mm × 1.0 mm body dimensions, and tin-plated copper leads for reflow/wave soldering compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K1) | Cathode of Diode 1 | Connects to regulated node or clamped signal line for first Zener path; reverse-biased during regulation |
| 2 (K2) | Cathode of Diode 2 | Independent cathode for second Zener element; enables dual-rail referencing from shared anode |
| 3 (CA) | Common Anode | Single input node for both Zeners; ties to supply rail or ground reference depending on circuit topology |
Key Features
| Feature | Design Value |
|---|---|
| Dual Zener topology | Two independent 27 V Zener elements sharing one anode terminal - reduces component count for dual-voltage reference or bidirectional clamping |
| AEC-Q101 qualification | Stress-tested per Automotive Electronics Council standard - validated for under-hood temperature cycling, humidity, and mechanical shock |
| ±5 % voltage tolerance | Guaranteed 25.1–28.9 V range at 2 mA - supports cost-sensitive designs where tighter tolerance is unnecessary |
| Low thermal resistance | 100 K/W junction-to-solder-point - improves power handling in thermally constrained layouts without heatsinking |
| High surge robustness | 1.0 A non-repetitive peak reverse current - withstands ESD and load-dump transients common in 12 V automotive systems |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Stabilizing 27 V reference for microcontroller ADC inputs monitoring battery voltage and alternator output. IC Role / Device Role / Timing Role: Dual Zener provides matched, temperature-stable reference for two independent analog channels while sharing ground return path. Use Value: Eliminates need for two discrete Zeners and associated layout area; AEC-Q101 rating ensures long-term stability across –40 °C to +125 °C operating range. |
Use Scenario: Clamping differential sensor outputs (e.g., RTD bridges) to prevent overvoltage damage to instrumentation amplifiers. IC Role / Device Role / Timing Role: Common-anode configuration allows symmetrical clamping of both positive and negative signal excursions relative to mid-rail. Use Value: 300 Ω max differential resistance maintains signal fidelity during clamping; 1.0 A surge rating absorbs transient spikes without degradation. |
| Automotive Infotainment Power Sequencing | Telecom Line Interface Protection |
Use Scenario: Generating dual 27 V rails for sequencing logic in head unit power management ICs during cold-crank events. IC Role / Device Role / Timing Role: Provides isolated, low-leakage (0.05 µA) reference for voltage supervisors monitoring pre-regulator outputs. Use Value: Low IR ensures minimal current draw from weak battery sources; SOT23 footprint fits tight spacing around PMICs. |
Use Scenario: Protecting Ethernet PHY transceivers from induced surges on twisted-pair lines in industrial gateways. IC Role / Device Role / Timing Role: Dual cathodes clamp both line pairs to common reference, limiting differential and common-mode overvoltage simultaneously. Use Value: 40 W non-repetitive peak power dissipation handles IEEE 802.3af-compliant surge tests; AEC-Q101 grade indicates proven reliability in harsh EMI environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5262BS | Single Zener (27 V, ±5 %), SOT23, 350 mW Ptot, no dual-cathode topology | Requires two devices for dual-rail use; higher power rating but larger board area | Select when only one regulated rail is needed or when higher continuous power margin is critical |
| Vishay SMBZ5262-E3/52 | Single Zener (27 V, ±5 %), SOD-123, 500 mW Ptot, higher surge rating (1.5 A IZSM) | Not pin-compatible; lacks dual-cathode functionality; better suited for high-energy transient suppression | Select for standalone 27 V clamping where space permits larger package and dual-channel operation is unnecessary |
Compared with MMBZ5262BS and SMBZ5262-E3/52, BZB84-C27-QR uniquely delivers dual 27 V Zener functions in one SOT23 footprint-reducing BOM count and PCB area while maintaining AEC-Q101 compliance, making it optimal for automotive dual-rail sensing and compact power sequencing.
Availability
BZB84-C27-QR is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, infotainment power sequencing, and telecom line protection requiring stable component supply with automotive-grade reliability.
Supply support for BZB84-C27-QR 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
Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
BZB84-C27-QR belongs to the BZB84-Q series of dual Zener diodes engineered specifically for AEC-Q101-compliant automotive voltage regulation and transient protection in space-constrained SMT designs.
FAQ
What is the guaranteed Zener voltage range for BZB84-C27-QR at 2 mA test current?
The guaranteed Zener voltage range is 25.1 V to 28.9 V at IZ = 2 mA and Tj = 25 °C, reflecting its ±5 % tolerance grade 'C'. This range remains valid across the full operating temperature span (–55 °C to +150 °C), with temperature coefficient specified at +18.9 mV/K (min) to +25.3 mV/K (max) for predictable drift compensation.
Can BZB84-C27-QR be used for bidirectional clamping in RS-485 bus protection?
Yes-its dual-cathode/common-anode structure allows direct connection across differential lines (K1 to A+, K2 to A–, CA to reference plane), enabling symmetrical clamping of both polarities. With 1.0 A non-repetitive peak current and 40 W surge power rating, it meets IEC 61000-4-5 Level 3 requirements when paired with appropriate series impedance.
How does thermal resistance impact derating in a 2-layer FR4 PCB design?
With Rth(j-sp) = 100 K/W, a 100 mW steady-state dissipation raises junction temperature by 10 °C above solder point. On a 2-layer FR4 board with standard copper, ambient-to-solder-point resistance is ~200 K/W, resulting in ~30 °C total rise above ambient-well within the 150 °C Tj limit at 125 °C ambient, permitting full 300 mW rating only below 75 °C ambient.
Is the marking code 'PF%' unique to BZB84-C27-QR across the BZB84-Q series?
Yes-per Table 4 of the datasheet, 'PF%' is the exclusive marking code for BZB84-C27-QR. All other variants in the series have distinct two-letter codes (e.g., 'PE%' for C24-Q, 'PG%' for C30-Q), enabling unambiguous visual identification during inspection and assembly verification.
BZB84-C27-QR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZB84-Q
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Configuration:
- 1 Pair Common Anode
- Voltage - Zener (Nom) (Vz):
- 27 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 18.9 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZB84-C27-QR FAQ
1.How can I place an order for BZB84-C27-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB84-C27-QR 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 BZB84-C27-QR reliable?
The price and inventory of BZB84-C27-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZB84-C27-QR is usually 5 days.
3.What payment methods are accepted for BZB84-C27-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB84-C27-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB84-C27-QR?
BZB84-C27-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB84-C27-QR 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 BZB84-C27-QR?
For technical support, including BZB84-C27-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB84-C27-QR requirements.
6.How does Aetrix verify that BZB84-C27-QR is sourced from the original manufacturer or authorized distributors?
All BZB84-C27-QR 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 BZB84-C27-QR meets industry standards.
7.What is the process for return or replacement of BZB84-C27-QR?
All BZB84-C27-QR units undergo pre-shipment inspection (PSI). If there is an issue with BZB84-C27-QR, 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 BZB84-C27-QR part is unused and in its original packaging.
Return procedure for BZB84-C27-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZB84-C27-QR Tags
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