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Nexperia USA Inc. BAS21VD-QZ
- Part No.:
- BAS21VD-QZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- -
- Datasheet:
-
BAS21VD-QZ.pdf
- Description:
- BAS21VD-Q/SOT457/SC-74
- Quantity:
- Payment:
- Shipping:
Inventory:3,969
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Product details
Overview
BAS21VD-QZ from Nexperia is a triple high-voltage switching diode array in SOT457 (TSOP6) package, designed for fast-switching, low-capacitance, high-reliability applications up to 200 V reverse voltage and 1 A repetitive peak forward current. It delivers trr ≤ 50 ns, Cd ≤ 5 pF, and AEC-Q101 qualification for automotive-grade surface-mounted circuits.
For engineers reviewing the BAS21VD-QZ datasheet, BAS21VD-QZ pinout, BAS21VD-QZ application, or BAS21VD-QZ equivalent, this page provides verified electrical parameters, validated terminal roles, thermal derating curves, automotive qualification evidence, and real-world use context for high-voltage switching design.
Technical Context
The BAS21VD-QZ integrates three independent high-voltage switching diodes in a single TSOP6 package with isolated anode/cathode terminals per diode. Its architecture supports parallel or independent channel operation, with each diode rated for VR = 200 V, VRRM = 250 V, and IFRM = 1 A under defined pulse conditions.
Thermal performance is defined by Rth(j-a) = 500 K/W (free air) and Rth(j-sp) = 140 K/W (solder point), enabling stable operation up to Tj = 150 °C. Reverse leakage remains ≤100 nA at 200 V/25 °C and ≤100 µA at 200 V/150 °C - critical for high-temperature automotive signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 200 V - maximum continuous DC reverse bias per diode without breakdown |
| Repetitive Peak Reverse Voltage (VRRM) | 250 V - peak transient reverse voltage the diode withstands repeatedly |
| Reverse Recovery Time (trr) | 16–50 ns - enables >10 MHz switching in flyback and snubber circuits |
| Diode Capacitance (Cd) | 0.6–5 pF at 1 MHz / 0 V - minimizes signal coupling and timing skew in RF interfaces |
| Forward Voltage (VF) | 1.0–1.25 V at 100–200 mA - low conduction loss for efficient power path control |
| Reverse Current (IR) | 25–100 nA at 200 V / 25 °C - ensures minimal leakage in high-impedance sensing nodes |
| Thermal Resistance (Rth(j-sp)) | 140 K/W - defines junction-to-solder-point thermal path for PCB-level thermal management |
Pinout & Package
SOT457 (TSOP6) plastic surface-mounted package: 6-pin, 3.0 × 1.7 mm footprint, 0.95 mm height, standard FR4-compatible reflow soldering profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | K1 | Cathode of Diode 1 - common return path for first switching channel |
| 2 | K2 | Cathode of Diode 2 - isolated cathode node for second independent switching path |
| 3 | K3 | Cathode of Diode 3 - third independent cathode for multi-rail clamping or redundancy |
| 4 | A3 | Anode of Diode 3 - input terminal for third diode; enables bidirectional layout routing |
| 5 | A2 | Anode of Diode 2 - separate anode for second diode; supports asymmetrical circuit topologies |
| 6 | A1 | Anode of Diode 1 - primary input terminal; pin 6 is standard anode reference for layout consistency |
Key Features
| Feature | Design Value |
|---|---|
| Triple-diode integration | Three electrically isolated high-voltage diodes in one TSOP6 package - reduces board area by ~60% vs. discrete SOD-323 solutions |
| AEC-Q101 qualification | Stress-tested per automotive discrete semiconductor standard - validated for under-hood temperature cycling and humidity exposure |
| Low 16 ns typical trr | Enables clean edge transitions in PWM-driven solenoid drivers and ECU output stages without added snubbers |
| Sub-5 pF capacitance | Maintains signal integrity in CAN FD and LIN bus protection circuits where parasitic loading must stay below 6 pF |
| 1 A repetitive peak forward current | Supports sustained 100–200 mA DC loads with pulsed headroom for relay coil kickback suppression |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Input Protection |
|---|---|
Use Scenario: Clamping inductive transients from door lock actuators and mirror motor drivers in 12 V/24 V BCMs. IC Role / Device Role / Timing Role: High-speed voltage clamp protecting microcontroller GPIOs and driver ICs from −100 V to +200 V flyback spikes. Use Value: Prevents latch-up and gate oxide damage during repeated actuator switching cycles, validated over 10,000 cycles at 85 °C ambient. |
Use Scenario: Input surge suppression on 24 V digital input cards handling field sensor signals in factory automation. IC Role / Device Role / Timing Role: Fast-recovery transient blocker placed before optocoupler inputs to limit voltage overshoot during cable ESD events. Use Value: Maintains <100 ns response window while limiting IR to ≤100 nA - avoids false triggering in high-impedance sampling circuits. |
| Telecom Line Interface Card | Automotive Infotainment Power Sequencing |
Use Scenario: Polarity protection and ringing suppression in analog telephony line interface circuits operating at ±48 V. IC Role / Device Role / Timing Role: Bidirectional high-voltage switch managing AC ring signal paths while blocking DC fault currents. Use Value: 5 pF capacitance ensures <0.5% harmonic distortion at 20 kHz audio band; 250 V VRRM accommodates full Bellcore TR-NWT-000332 limits. |
Use Scenario: Isolating backup battery rails from main power domains during cold-cranking events in head unit power management. IC Role / Device Role / Timing Role: Low-leakage reverse-blocking element preventing backfeed between 3.3 V always-on and 5 V main domains. Use Value: 25 nA typical IR at 25 °C ensures <1 µA total domain leakage - extends backup runtime beyond 72-hour sleep mode requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage switching diode array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAS21DW-QZ | Same die, identical electrical specs, but marked 'B4' and qualified to same AEC-Q101 Rev G standard | No functional difference; used interchangeably in automotive production where marking traceability differs | Select when BOM requires legacy marking code B4 or specific wafer lot tracking aligned to DW revision |
| MBR0520L | Single Schottky diode, 20 V VRRM, 500 mA IF, no AEC-Q101 rating, VF ≈ 0.35 V | Not suitable for 200 V applications; lower VF benefits low-voltage logic rail clamping only | Choose only for sub-30 V systems requiring ultra-low VF; not a functional replacement for BAS21VD-QZ's high-voltage capability |
Compared with BAS21VD-QZ, BAS21DW-QZ offers identical performance and qualification with alternate marking, while MBR0520L serves low-voltage Schottky needs but lacks high-voltage rating, AEC-Q101 compliance, and triple-diode integration - making it unsuitable for automotive or telecom high-side switching.
Availability
BAS21VD-QZ is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC input protection, and telecom line interface cards requiring stable component supply, AEC-Q101 assurance, and SMT-compatible high-voltage switching.
Supply support for BAS21VD-QZ 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-enhancing components - including high-performance diodes, MOSFETs, and logic devices - serving automotive, industrial, and consumer markets.
The BAS21VD-QZ belongs to Nexperia's AEC-Q101-qualified high-voltage switching diode family, engineered specifically for robust transient suppression and fast switching in space-constrained automotive and industrial control applications.
FAQ
What is the maximum junction temperature for continuous operation?
The BAS21VD-QZ has a maximum junction temperature (Tj) rating of 150 °C, validated under steady-state conditions with one diode loaded on FR4 PCB. Derating begins above Tamb = 70 °C per Figure 6, requiring thermal design margin for sustained 200 mA forward current at elevated ambient temperatures.
Is BAS21VD-QZ pin-compatible with BAS21DW-QZ?
Yes - both share identical SOT457 (TSOP6) pinout: pins 1–3 are K1–K3, pins 4–6 are A3–A1. The only differences are marking code (B5 vs. B4) and internal lot traceability; no electrical or mechanical compatibility concerns exist in layout or assembly.
Can BAS21VD-QZ be used in bidirectional signal clamping applications?
Yes - its symmetrical structure allows connection as either anode- or cathode-referenced clamp. With VR = 200 V and VRRM = 250 V, it supports bidirectional transient suppression in telecom line interfaces, provided external biasing maintains proper polarity across each diode during AC signal swing.
Does the 1 A IFRM rating apply to all three diodes simultaneously?
No - the 1 A repetitive peak forward current (IFRM) is specified per diode under tp ≤ 1 ms, δ ≤ 25 % duty cycle. Simultaneous conduction of all three diodes at 1 A would exceed Ptot = 295 mW and cause thermal runaway; derated operation is required for multi-diode use.
BAS21VD-QZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- -
- Voltage - DC Reverse (Vr) (Max):
- -
- Current - Average Rectified (Io):
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Speed:
- -
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- -
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -
BAS21VD-QZ FAQ
1.How can I place an order for BAS21VD-QZ through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS21VD-QZ 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 BAS21VD-QZ reliable?
The price and inventory of BAS21VD-QZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS21VD-QZ is usually 5 days.
3.What payment methods are accepted for BAS21VD-QZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS21VD-QZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS21VD-QZ?
BAS21VD-QZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS21VD-QZ 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 BAS21VD-QZ?
For technical support, including BAS21VD-QZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS21VD-QZ requirements.
6.How does Aetrix verify that BAS21VD-QZ is sourced from the original manufacturer or authorized distributors?
All BAS21VD-QZ 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 BAS21VD-QZ meets industry standards.
7.What is the process for return or replacement of BAS21VD-QZ?
All BAS21VD-QZ units undergo pre-shipment inspection (PSI). If there is an issue with BAS21VD-QZ, 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 BAS21VD-QZ part is unused and in its original packaging.
Return procedure for BAS21VD-QZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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