My Inquiry
My Account
Nexperia USA Inc. BZX84-C27,235
- Part No.:
- BZX84-C27,235
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-C27,235.pdf
- Description:
- DIODE ZENER 27V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,950
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX84-C27,235 from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 27 V nominal breakdown voltage at 2 mA test current, 300 Ω maximum differential resistance, and 80 μA reverse current at 25.1 V. It delivers stable reference voltage in low-power supply regulation and overvoltage protection circuits for consumer and industrial power management.
For engineers reviewing the BZX84-C27,235 datasheet, BZX84-C27,235 pinout, BZX84-C27,235 application, or BZX84-C27,235 equivalent, key selection criteria include Zener voltage tolerance (±5 %), thermal resistance (330 K/W junction-to-solder-point), non-repetitive peak reverse power (40 W), and SOT23 footprint compatibility with high-density PCB layouts.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain a stable 27 V reference across its terminals under varying load and temperature conditions. Its 80 μA reverse leakage at VR = 25.1 V and 0.9 V forward voltage at IF = 10 mA define its bidirectional conduction boundaries.
The device features a temperature coefficient of +0.05 mV/K at IZ = 2 mA, indicating minimal voltage drift over temperature, and supports transient suppression via 40 W non-repetitive peak reverse power dissipation for pulse durations ≤100 μs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 27 V nominal at IZ = 2 mA; defines precise regulation point for feedback loops and voltage clamping |
| Tolerance | ±5 % (C-series); allows predictable design margin for 25.1–28.9 V operation range |
| Differential Resistance (rdif) | ≤300 Ω at IZ = 2 mA; determines output impedance and load regulation sensitivity |
| Reverse Current (IR) | ≤80 μA at VR = 25.1 V; sets minimum bias current requirement for stable regulation |
| Total Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C on FR4 PCB; limits continuous DC power handling in compact layouts |
| Non-repetitive Peak Power (PZSM) | 40 W for tp ≤ 100 μs; enables short-duration surge suppression without thermal runaway |
| Junction Temperature (Tj) | 150 °C max; defines upper thermal operating limit before permanent degradation |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mounted package with 3 leads; 1.9 mm × 1.1 mm footprint, 1.4 mm height, and standard reflow-compatible solder lands per Figure 12.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential node in regulation path |
| 2 | Not Connected (n.c.) | Internal die bond wire stub; electrically isolated and must remain unconnected |
| 3 | Cathode (K) | Reverse-biased terminal; connects to higher-potential node and provides regulated output reference |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMT packaging | SOT23 footprint enables high-density placement on space-constrained PCBs |
| Controlled Zener tolerance | ±5 % (C-series) ensures predictable voltage window for cost-sensitive designs |
| Thermal performance | 330 K/W junction-to-solder-point resistance supports reliable heat transfer through cathode pad |
| Pulse survivability | 40 W non-repetitive peak power rating handles ESD and line transients without failure |
| Stable temperature coefficient | +0.05 mV/K minimizes drift over -55 °C to +150 °C ambient range |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
|
Use Scenario: Providing stable 27 V reference for linear regulator feedback networks in battery-powered instrumentation. IC Role / Device Role / Timing Role: Zener diode acts as precision voltage reference source in error amplifier loop. Use Value: ±5 % tolerance and 300 Ω dynamic resistance ensure <±100 mV output variation under 10 mA load changes. |
Use Scenario: Clamping 30 V rail surges to protect downstream 24 V logic inputs in industrial PLC modules. IC Role / Device Role / Timing Role: Reverse-biased Zener shunts excess energy during transient events. Use Value: 40 W peak power rating absorbs 100 μs pulses without exceeding 150 °C junction limit. |
| Signal Level Shifting | Comparator Threshold Setting |
|
Use Scenario: Biasing op-amp input stages to shift analog sensor signals into ADC input range in automotive cabin sensors. IC Role / Device Role / Timing Role: Zener establishes fixed DC offset voltage for AC-coupled signal paths. Use Value: 80 μA reverse leakage avoids loading high-impedance sensor outputs at 25.1 V bias point. |
Use Scenario: Setting 27 V trip threshold for undervoltage lockout (UVLO) comparators in DC-DC converter control ICs. IC Role / Device Role / Timing Role: Zener defines precise comparator reference voltage independent of supply ripple. Use Value: +0.05 mV/K tempco maintains threshold accuracy within ±0.3 V over -40 °C to +125 °C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5256BS-7-F | 27 V, ±5 %, SOT23, 200 mW Ptot, 500 Ω rdif | Lower power rating reduces surge margin; higher dynamic resistance degrades regulation accuracy | Select when board-level thermal management limits total dissipation to 200 mW |
| Vishay BZX84-C27-TP | 27 V, ±5 %, SOT23, 250 mW Ptot, 300 Ω rdif, identical thermal resistance | No functional deviation; same marking code (%T2) and pinout | Drop-in replacement with identical electrical and mechanical behavior |
Compared with BZX84-C27,235, MMBZ5256BS-7-F trades 50 mW power headroom and 200 Ω higher dynamic resistance for tighter inventory consolidation, while BZX84-C27-TP offers full form-fit-function equivalence with no design revision required.
Availability
BZX84-C27,235 is available at Aetrix Electronics and suitable for low-power voltage reference, overvoltage clamp, and signal level-shifting applications requiring stable component supply and long-term obsolescence management.
Supply support for BZX84-C27,235 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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency and miniaturization.
The BZX84 series targets cost-effective, space-efficient voltage regulation in consumer, industrial, and computing power supplies, emphasizing robustness in SOT23 packaging.
FAQ
What is the maximum continuous reverse current this Zener can handle at 27 V?
The BZX84-C27,235 is not rated for continuous reverse conduction at 27 V. Its specified reverse current is ≤80 μA at VR = 25.1 V (just below VZ). Continuous operation requires limiting reverse current to maintain Ptot ≤ 250 mW - at 27 V, that corresponds to ≤9.3 mA average current with adequate heatsinking.
Can this part replace a BZX84-B27 in an existing design?
Yes, but with trade-offs: BZX84-C27 has ±5 % tolerance (25.1–28.9 V) versus BZX84-B27's ±2 % (26.5–27.5 V). If circuit timing or regulation accuracy depends on tight voltage windows, revalidation of reference stability and load regulation is required.
Is the n.c. pin internally bonded or truly floating?
Pin 2 is a true no-connect terminal - it contains no internal bond wire or die connection. The SOT23 leadframe design includes this pin for mechanical symmetry and handling robustness, and it must remain unconnected in layout and assembly.
How does thermal resistance change when mounted on 2-layer vs. 4-layer PCBs?
Rth(j-sp) remains 330 K/W (junction-to-solder-point) regardless of board layer count, as it measures conduction through the cathode pad. However, Rth(j-a) improves from 500 K/W (FR4, single-sided copper) to ~200–250 K/W on 4-layer boards with internal ground/power planes, enhancing continuous power capability.
BZX84-C27,235 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX84
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 27 V
- Tolerance:
- ±5%
- Power - Max:
- 250 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:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZX84-C27,235 FAQ
1.How can I place an order for BZX84-C27,235 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-C27,235 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 BZX84-C27,235 reliable?
The price and inventory of BZX84-C27,235 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-C27,235 is usually 5 days.
3.What payment methods are accepted for BZX84-C27,235?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C27,235 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-C27,235?
BZX84-C27,235 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-C27,235 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 BZX84-C27,235?
For technical support, including BZX84-C27,235 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C27,235 requirements.
6.How does Aetrix verify that BZX84-C27,235 is sourced from the original manufacturer or authorized distributors?
All BZX84-C27,235 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 BZX84-C27,235 meets industry standards.
7.What is the process for return or replacement of BZX84-C27,235?
All BZX84-C27,235 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C27,235, 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 BZX84-C27,235 part is unused and in its original packaging.
Return procedure for BZX84-C27,235:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84-C27,235 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
