My Inquiry
My Account
Vishay General Semiconductor - Diodes Division BZW04P28B-E3/73
- Part No.:
- BZW04P28B-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P28B-E3/73.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,034
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZW04P28B-E3/73 from Vishay General Semiconductor is a bi-directional TransZorb® transient voltage suppressor (TVS) diode designed for robust overvoltage protection in signal and power lines. It features a 28.2 V stand-off voltage (VWM), 31.4–36.3 V breakdown voltage (VBR at 1 mA), 45.7 V clamping voltage (VC) at 8.8 A peak pulse current, and 400 W peak pulse power (10/1000 µs waveform). It is used to safeguard MOSFETs, sensor interfaces, and communication lines against ESD and inductive switching transients in industrial and automotive control systems.
For engineers reviewing the BZW04P28B-E3/73 datasheet, BZW04P28B-E3/73 pinout, BZW04P28B-E3/73 application, or BZW04P28B-E3/73 equivalent, key selection criteria include its bi-directional polarity, DO-204AL (DO-41) package, AEC-Q101 qualification, 175 °C maximum junction temperature, and compliance with IEC 61000-4-2 (±30 kV contact discharge).
Technical Context
This bi-directional TVS diode operates symmetrically in both forward and reverse bias, enabling clamping of positive and negative transients without polarity constraints. Its glass-passivated junction ensures stable leakage performance and low incremental surge resistance, critical for repeatable clamping under repetitive surge events.
The device delivers 400 W peak pulse power handling per the standardized 10/1000 µs waveform, with thermal derating above 25 °C ambient per Figure 2 and junction temperature limits up to 175 °C. It meets JESD22-B106 solderability requirements (275 °C, 10 s) and JESD201 Class 1A whisker testing (E3 suffix).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28.2 V - Maximum continuous working voltage before clamping begins; defines safe operating margin for 24 V nominal systems. |
| VBR (min/max) | 31.4 V / 36.3 V at 1 mA - Confirmed breakdown range ensures reliable turn-on across process variation and temperature. |
| VC @ IPPM | 45.7 V at 8.8 A - Clamping voltage during 10/1000 µs surge; limits protected circuit stress to ≤45.7 V under worst-case 400 W event. |
| IPPM | 8.8 A - Peak pulse current capability at rated clamping voltage; supports common IEC 61000-4-5 Level 3 (1 Ω source) surges. |
| PPPM | 400 W - Peak pulse power rating with 10/1000 µs waveform and 0.01 % duty cycle; enables protection against lightning-induced transients. |
| TJmax | 175 °C - Maximum junction temperature; allows operation in under-hood automotive or high-ambient industrial environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, epoxy-molded case meeting UL 94 V-0 flammability rating. Matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (bi-directional) | Transient conduction path | No polarity marking; symmetrical structure enables identical clamping for ± transients - no orientation required during placement. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable reverse leakage (<1 µA at VWM) and long-term reliability under thermal cycling and humidity stress. |
| 400 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 surge immunity up to Level 3 (1 kV line-to-ground, 2 Ω source impedance) without degradation. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS modules requiring zero-defect field performance. |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes let-through voltage during clamping - critical for protecting 3.3 V or 5 V logic interfaces downstream of the TVS. |
| RoHS-compliant, matte tin leads | Enables lead-free reflow assembly and eliminates whisker risk in high-reliability applications per JESD201 Class 1A. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed directly at connector entry point to shunt transients before reaching sensitive IC inputs. Use Value: Withstands ±30 kV contact ESD (IEC 61000-4-2) and 100 V/10 ms load dump pulses while maintaining <1 µA leakage at 28.2 V. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and 0–10 V analog channels in programmable logic controllers against field wiring surges and ground bounce. IC Role / Device Role / Timing Role: Primary overvoltage clamp on signal lines between terminal blocks and ADC input stages. Use Value: Clamps 8.8 A transients to ≤45.7 V within nanoseconds, preserving signal integrity and preventing ADC saturation or latch-up. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Secondary protection on Ethernet PHY or DSL line interface circuits exposed to induced lightning surges in outdoor telecom cabinets. IC Role / Device Role / Timing Role: Coordinated clamping stage following gas discharge tube (GDT) primary protection to limit let-through voltage. Use Value: Fast response time and low VC ensure downstream PHY ICs see <46 V stress even during 400 W surge events. |
Use Scenario: Suppressing inductive kickback from brushed DC motors and solenoids in washing machines, HVAC actuators, and power tools. IC Role / Device Role / Timing Role: Across-the-line snubber mounted at motor terminals to absorb energy from L·di/dt spikes. Use Value: Handles repetitive 400 W pulses with 0.01 % duty cycle, enabling reliable protection across thousands of motor start-stop cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ28CA | Same VWM (28 V), but SMC (DO-214AB) package - larger footprint, higher thermal mass, 600 W PPPM. | Preferred where board space permits and higher single-pulse energy absorption is needed (e.g., AC mains input stages). | Select SMBJ28CA if PCB layout allows SMC package and system-level surge tests exceed 400 W requirements. |
| 1.5KE27CA | Higher VWM (23.1 V), DO-201AD package, 1500 W PPPM, but slower response and higher VC/VBR ratio (≈1.45). | Better suited for high-energy, lower-speed transients (e.g., AC power line protection), not fast ESD or data line clamping. | Choose 1.5KE27CA only for non-data-line, high-energy applications where clamping speed is secondary to energy handling. |
Compared with SMBJ28CA and 1.5KE27CA, BZW04P28B-E3/73 offers optimal balance of compact DO-41 form factor, AEC-Q101 qualification, and precise 28.2 V VWM for 24 V system compatibility - making it preferred for space-constrained automotive and industrial signal-line protection.
Availability
BZW04P28B-E3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, and telecom line card surge protection requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant manufacturing.
Supply support for BZW04P28B-E3/73 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The BZW04P series was engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial automation, and infrastructure equipment where failure modes must be mitigated across wide temperature and surge profiles.
FAQ
What is the polarity configuration of BZW04P28B-E3/73?
BZW04P28B-E3/73 is a bi-directional TVS diode with symmetrical clamping behavior in both polarities. It has no cathode marking and requires no orientation during PCB placement - ideal for protecting AC-coupled or differential signal lines where polarity reversal may occur.
Does BZW04P28B-E3/73 meet automotive qualification standards?
Yes, BZW04P28B-E3/73 is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per JS-001. The "HE3" variant (e.g., BZW04P28B-HE3/73) denotes full AEC-Q101 compliance; the E3/73 version is commercial grade but shares identical electrical specs and construction.
What is the maximum clamping voltage of BZW04P28B-E3/73 under surge conditions?
The maximum clamping voltage (VC) of BZW04P28B-E3/73 is 45.7 V at 8.8 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is guaranteed across temperature and process variation and defines the upper voltage limit imposed on protected circuitry during transient events.
Can BZW04P28B-E3/73 be used in 24 V DC power rail protection?
Yes, BZW04P28B-E3/73 is specifically suited for 24 V DC systems: its 28.2 V stand-off voltage (VWM) provides adequate margin above nominal rail voltage, while its 45.7 V clamping voltage ensures downstream 36 V-rated components remain within safe operating limits during transients.
What package type does BZW04P28B-E3/73 use, and is it RoHS-compliant?
BZW04P28B-E3/73 uses the DO-204AL (DO-41) axial package with matte tin-plated leads. It is RoHS-compliant per Directive 2011/65/EU and meets JESD201 Class 1A whisker testing. The "E3" suffix confirms commercial-grade RoHS compliance and J-STD-002 solderability.
BZW04P28B-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 28.2V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 45.7V
- Current - Peak Pulse (10/1000µs):
- 8.8A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04P28B-E3/73 FAQ
1.How can I place an order for BZW04P28B-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P28B-E3/73 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 BZW04P28B-E3/73 reliable?
The price and inventory of BZW04P28B-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04P28B-E3/73 is usually 5 days.
3.What payment methods are accepted for BZW04P28B-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P28B-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P28B-E3/73?
BZW04P28B-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P28B-E3/73 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 BZW04P28B-E3/73?
For technical support, including BZW04P28B-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P28B-E3/73 requirements.
6.How does Aetrix verify that BZW04P28B-E3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04P28B-E3/73 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 BZW04P28B-E3/73 meets industry standards.
7.What is the process for return or replacement of BZW04P28B-E3/73?
All BZW04P28B-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P28B-E3/73, 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 BZW04P28B-E3/73 part is unused and in its original packaging.
Return procedure for BZW04P28B-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04P28B-E3/73 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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 …
