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Nexperia USA Inc. PLVA2656A,215
- Part No.:
- PLVA2656A,215
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PLVA2656A,215.pdf
- Description:
- DIODE ZENER ARRAY 5.6V SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,967
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Product details
Overview
PLVA2656A from Nexperia is a low-voltage avalanche regulator double diode with common anode in SOT23 package, designed for precision voltage stabilization at 5.6 V nominal working voltage (IZ = 250 μA), 100 Ω dynamic resistance, and 1.9 mV/K temperature coefficient. It serves as a low-noise, low-power voltage reference in CMOS RAM backup circuits and smoke detector relays.
For engineers reviewing the PLVA2656A datasheet, PLVA2656A pinout, PLVA2656A application, or PLVA2656A equivalent, key selection criteria include its dual-cathode/common-anode configuration, sub-1 μA reverse current at 50% VZ, hard breakdown knee, and 250 mW total power dissipation capability under single-diode loading.
Technical Context
The PLVA2656A integrates two matched Zener-type avalanche regulator diodes sharing a common anode terminal, enabling compact dual-reference or differential clamping functions in space-constrained SMD designs. Its 100 Ω dynamic impedance at 250 μA ensures stable regulation under light-load conditions typical of memory backup rails.
It exhibits a 1.9 mV/K positive temperature coefficient and <1 nA reverse current at 50% nominal VZ (5.6 V), supporting ultra-low leakage voltage limiting in battery-backed systems. The device operates within a junction temperature range up to 150 °C and meets IEC 60134 absolute maximum ratings.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VZ) | 5.40–5.80 V at IZ = 250 μA; tight 400 mV tolerance enables precise 5.6 V reference without trimming |
| Dynamic Resistance (RZ) | 100 Ω at 1 kHz, 10% AC superimposed on 250 μA DC; ensures minimal output voltage variation under load transients |
| Reverse Current (IR) | 1.1 nA at VR = 50% VZ; supports >10-year battery hold-up in CMOS RAM backup without significant drain |
| Temperature Coefficient (SZ) | +1.9 mV/K at IZ = 250 μA; predictable drift allows compensation in temperature-sensitive analog references |
| Noise Voltage Density (Vn) | 1.0 μV/√Hz at 1 kHz; 10× lower than conventional series, critical for low-noise sensor front-ends |
| Total Power Dissipation | 250 mW (single diode), 180 mW (dual diode); defines safe continuous operation on FR4 PCB at 25 °C ambient |
Pinout & Package
PLVA2656A is housed in a plastic surface-mounted SOT23 (TO-236AB) package with three leads and a thermal resistance of 500 K/W (junction-to-ambient, FR4 board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K1) | First regulated output node; connects to load requiring 5.6 V reference or clamping |
| 2 | Cathode (K2) | Second independent regulated output node; enables dual-rail referencing or redundancy |
| 3 | Common Anode (A) | Shared return path; simplifies PCB layout by eliminating separate anode traces for both diodes |
Key Features
| Feature | Design Value |
|---|---|
| Hard breakdown knee | Sharp, non-linear transition into conduction improves regulation accuracy and reduces uncertainty near VZ |
| Low noise performance | 1.0 μV/√Hz noise density enables use in precision analog signal chains where reference noise couples into measurements |
| Very low dynamic impedance | 100 Ω at 250 μA - 20× lower than conventional Zeners - maintains stable voltage under microampere-level load shifts |
| Small VZ tolerances | ±0.2 V (5.4–5.8 V) at 250 μA ensures interchangeability without system-level calibration |
Applications
| CMOS RAM Backup Circuit | Smoke Detector Relay Interface |
|---|---|
Use Scenario: Maintaining SRAM data during main power loss using a coin-cell battery. IC Role / Device Role / Timing Role: Low-leakage voltage reference and clamp protecting RAM VCC rail from overvoltage during battery switchover. Use Value: 1.1 nA reverse current at 50% VZ minimizes battery drain, extending backup runtime beyond 10 years. | Use Scenario: Isolating and conditioning relay driver signals in battery-powered smoke alarms. IC Role / Device Role / Timing Role: Dual-cathode voltage limiter preventing transient-induced latch-up in relay control ICs. Use Value: Hard breakdown knee and 30 W non-repetitive peak power handling suppress ESD and line surges without degradation. |
| Voltage Stabilizer for Sensor Bias | Low-Power Microcontroller Reset Reference |
Use Scenario: Providing stable bias voltage to analog sensor elements in wearable health monitors. IC Role / Device Role / Timing Role: Precision 5.6 V shunt reference establishing fixed operating point for op-amp sensor interfaces. Use Value: +1.9 mV/K temperature coefficient allows predictable drift compensation in firmware or hardware. | Use Scenario: Generating reliable reset threshold for ultra-low-power MCUs in IoT endpoint devices. IC Role / Device Role / Timing Role: Dual-diode configuration used as redundant voltage monitor feeding comparator inputs. Use Value: Matched characteristics between K1 and K2 enable differential sensing that rejects common-mode supply noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-voltage avalanche regulator diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C5V6 | Single cathode, ±5% VZ tolerance (5.32–5.88 V), 150 Ω RZ, 2.5 μA IR at 50% VZ | Lacks dual-diode topology; unsuitable for differential or redundant referencing | Select when only one reference is needed and higher leakage is acceptable |
| MMBZ5232BS | Dual cathode/common anode, but ±5% VZ (5.32–5.88 V), 220 Ω RZ, 5 μA IR at 50% VZ | Higher noise (2.5 μV/√Hz) and looser VZ tolerance reduce precision in low-drift systems | Choose for cost-sensitive designs where 5.6 V nominal is sufficient but sub-nA leakage is not required |
Compared with BZX84-C5V6 and MMBZ5232BS, PLVA2656A delivers tighter VZ tolerance (±0.2 V), lower leakage (1.1 nA), and superior noise performance (1.0 μV/√Hz), making it optimal for long-life, low-drift, dual-reference applications.
Availability
PLVA2656A is available at Aetrix Electronics and suitable for CMOS RAM backup circuits, smoke detector relay interfaces, and low-power microcontroller reset reference designs requiring stable component supply across extended production lifecycles.
Supply support for PLVA2656A 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 leader in high-performance discrete, logic, and PowerMOS semiconductors, serving automotive, industrial, computing, and consumer markets with robust, scalable components.
The PLVA2600A series belongs to Nexperia's low-voltage avalanche regulator diode product line, engineered specifically for precision, low-noise, low-leakage voltage stabilization in battery-critical and safety-related applications.
FAQ
What is the maximum continuous forward current rating for PLVA2656A?
The PLVA2656A has a maximum continuous forward current (IF) of 250 mA per diode, as defined in the Absolute Maximum Ratings table. This rating assumes device mounting on an FR4 PCB and applies to each cathode individually when operated in forward bias, though the device is primarily intended for reverse-biased Zener operation.
Can PLVA2656A be used in place of a single Zener diode?
Yes - either cathode (Pin 1 or Pin 2) can be used independently with the common anode (Pin 3) as a standard low-noise 5.6 V Zener reference. The second cathode remains unused or may serve as a redundant path; no circuit modification is needed to operate it as a single-diode solution.
What is the thermal resistance from junction to ambient for PLVA2656A?
The junction-to-ambient thermal resistance (Rth j-a) is 500 K/W when mounted on a standard FR4 printed circuit board, per the Thermal Characteristics table. This value assumes natural convection cooling and defines the temperature rise per watt of dissipated power under typical SMT layout conditions.
Does PLVA2656A meet automotive qualification standards?
No - PLVA2656A is specified for industrial and consumer applications and is not AEC-Q101 qualified. While it operates up to 150 °C junction temperature and offers high reliability, it lacks the stress testing, failure analysis, and documentation required for automotive-grade deployment.
PLVA2656A,215 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Configuration:
- 1 Pair Common Anode
- Voltage - Zener (Nom) (Vz):
- 5.6 V
- Tolerance:
- -
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PLVA2656A,215 FAQ
1.How can I place an order for PLVA2656A,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for PLVA2656A,215 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 PLVA2656A,215 reliable?
The price and inventory of PLVA2656A,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PLVA2656A,215 is usually 5 days.
3.What payment methods are accepted for PLVA2656A,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PLVA2656A,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PLVA2656A,215?
PLVA2656A,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PLVA2656A,215 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 PLVA2656A,215?
For technical support, including PLVA2656A,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PLVA2656A,215 requirements.
6.How does Aetrix verify that PLVA2656A,215 is sourced from the original manufacturer or authorized distributors?
All PLVA2656A,215 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 PLVA2656A,215 meets industry standards.
7.What is the process for return or replacement of PLVA2656A,215?
All PLVA2656A,215 units undergo pre-shipment inspection (PSI). If there is an issue with PLVA2656A,215, 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 PLVA2656A,215 part is unused and in its original packaging.
Return procedure for PLVA2656A,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PLVA2656A,215 Tags
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