My Inquiry
My Account
Vishay General Semiconductor - Diodes Division BZW04P9V4B-E3/73
- Part No.:
- BZW04P9V4B-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P9V4B-E3/73.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,727
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZW04P9V4B-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 9.4 V stand-off voltage (VWM), 15.6 V clamping voltage (VC) at 25.7 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) capability with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the BZW04P9V4B-E3/73 datasheet, BZW04P9V4B-E3/73 pinout, BZW04P9V4B-E3/73 application, or BZW04P9V4B-E3/73 equivalent, key selection criteria include its bi-directional polarity, DO-41 (DO-204AL) package, AEC-Q101 qualification, low 0.075 %/°C VBR temperature coefficient, and compliance with IEC 61000-4-2/4-4/4-5 surge immunity standards.
Technical Context
This bi-directional TVS operates symmetrically in both polarities, with breakdown voltage (VBR) specified between 10.5 V and 12.1 V at 1 mA test current. Its low incremental surge resistance ensures stable clamping performance under repetitive transients, while the glass-passivated junction enables fast response time (<1 ns) and high reliability in harsh environments.
The device is rated for 175 °C maximum junction temperature and derates linearly above 25 °C ambient per Vishay's Fig. 2 curve. It meets JESD22-B106 solder dip requirements (275 °C, 10 s) and is qualified to AEC-Q101 for automotive-grade deployment - distinguishing it from commercial-only variants like BZW04-9V4B.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.4 V - maximum continuous reverse working voltage before clamping initiates; defines safe operating margin for 9 V nominal supply rails. |
| VC @ IPPM | 15.6 V at 25.7 A - clamped voltage during 10/1000 µs surge; limits downstream IC stress to sub-16 V during 400 W transient events. |
| PPPM | 400 W - peak pulse power handling with 10/1000 µs waveform; supports EN 61000-4-5 Level 4 (4 kV) surge protection without degradation. |
| VBR min/max | 10.5 V / 12.1 V at IT = 1 mA - tight breakdown window ensures consistent turn-on across production lots and temperature. |
| ID @ VWM | 5.0 µA - ultra-low leakage at stand-off voltage; avoids signal integrity loss in high-impedance sensor or communication lines. |
| TJ max | 175 °C - extended thermal rating enables use in under-hood automotive modules and industrial enclosures without forced cooling. |
| Temp. Coeff. | 0.075 %/°C - low VBR drift with temperature ensures stable clamping threshold across -55 °C to +175 °C operating range. |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, epoxy-molded case meeting UL 94 V-0 flammability rating. Matte tin-plated leads comply with J-STD-002 and JESD22-B102 solderability standards. Bi-directional types have no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient conduction path | No cathode band; terminals are functionally identical - conducts surge current equally in either direction when V > VC. |
| Lead 1 | Connection to PCB trace or cable line | One end of the TVS placed in series with protected node; requires direct placement adjacent to connector or IC pin. |
| Lead 2 | Connection to reference plane (GND or rail) | Second terminal tied to local ground or return path; low-inductance layout essential to maintain clamping efficacy. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| Glass-passivated junction | Enables <1 ns response time and long-term stability against humidity, thermal cycling, and mechanical stress. |
| 400 W 10/1000 µs pulse rating | Supports repeated surge events per IEC 61000-4-5 without parameter shift or failure - critical for industrial fieldbus nodes. |
| RoHS-compliant, matte tin leads | Ensures compatibility with lead-free reflow and wave soldering processes; meets JESD201 Class 1A whisker resistance. |
| Bi-directional symmetry | Eliminates polarity concerns during board assembly and simplifies design reuse across AC-coupled or differential signal paths. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Voltage clamping element placed at connector interface to shunt transients before reaching sensitive ASICs. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-2 ±15 kV contact discharge without latch-up or parametric shift. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against induced surges from relay coil switching and motor noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp on field-side input traces, coordinated with series impedance and filtering. Use Value: Limits transient voltage to ≤15.6 V during 400 W events, preventing false triggering and extending optocoupler lifetime. |
| Consumer Power Adapter Interface | Telecom Line Card Surge Protection |
Use Scenario: Input-stage protection for USB-C PD adapters and AC/DC converters exposed to mains-borne surges and hot-plug transients. IC Role / Device Role / Timing Role: First-line defense on primary-side DC bus or secondary-side 5–12 V rails before DC-DC regulators. Use Value: Withstands 1000× 400 W pulses at 0.01% duty cycle, enabling compact designs without external heat sinking. |
Use Scenario: Protecting Ethernet PHYs and POTS line interfaces in DSLAMs and VoIP gateways from lightning-induced longitudinal surges. IC Role / Device Role / Timing Role: Bi-directional clamp on balanced twisted-pair lines referenced to chassis ground via gas discharge tube coordination. Use Value: Symmetric clamping ensures equal protection on tip/ring lines without polarity-dependent performance variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A | Uni-directional; 9.0 V VWM; 14.4 V VC @ 27.8 A; same PPPM (400 W) but lower IFSM (100 A vs. N/A for bi-directional) | Requires correct polarity orientation; unsuitable for AC or floating differential lines | Select only if circuit topology guarantees unidirectional surge direction and polarity is fixed. |
| 1.5KE9.1B | Higher capacitance (~1000 pF); larger DO-201AE package; 9.1 V VWM; 14.5 V VC @ 27.4 A; same AEC-Q101 grade | Less suitable for high-speed data lines due to parasitic capacitance; requires more PCB area | Prefer when higher surge repetition tolerance is needed and layout space allows larger footprint. |
Compared with SMBJ9.0A and 1.5KE9.1B, BZW04P9V4B-E3/73 offers polarity-agnostic protection in a compact DO-41 outline with lower junction capacitance (<50 pF), making it optimal for cost-sensitive, space-constrained automotive and industrial signal-line applications where bidirectional threat models dominate.
Availability
BZW04P9V4B-E3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line card protection requiring stable component supply, AEC-Q101 compliance, and long-lifecycle support.
Supply support for BZW04P9V4B-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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The BZW04P series belongs to Vishay's TransZorb® TVS platform, engineered specifically for robust, standardized transient suppression in harsh-environment applications demanding AEC-Q101 validation and repeatable clamping performance.
FAQ
What is the polarity configuration of BZW04P9V4B-E3/73?
BZW04P9V4B-E3/73 is a bi-directional TVS diode with symmetrical anode/cathode terminals and no polarity marking. It clamps transient voltages equally in both directions - ideal for AC-coupled signals, differential buses like RS-485, and floating sensor outputs where voltage polarity reversal may occur during fault conditions. This eliminates orientation errors during PCB assembly.
Does BZW04P9V4B-E3/73 meet automotive qualification standards?
Yes, BZW04P9V4B-E3/73 is AEC-Q101 qualified, as confirmed in Vishay's datasheet revision 12-Jul-11 (Document Number: 88316). This certification validates its reliability for automotive applications including engine control, body electronics, and ADAS sensor modules - covering stress tests for temperature cycling, humidity, mechanical shock, and surge endurance.
What is the maximum clamping voltage of BZW04P9V4B-E3/73 under surge conditions?
The maximum clamping voltage (VC) of BZW04P9V4B-E3/73 is 15.6 V at 25.7 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and ensures downstream ICs remain within safe absolute maximum ratings during standardized IEC 61000-4-5 surge events.
Can BZW04P9V4B-E3/73 be used in place of uni-directional TVS diodes like SMBJ9.0A?
BZW04P9V4B-E3/73 can replace uni-directional TVS diodes only in circuits where bidirectional surge protection is required or where polarity cannot be guaranteed - such as across transformer-coupled lines or uncommitted sensor outputs. It must not be substituted in polarity-sensitive DC rails without verifying that reverse conduction does not interfere with system biasing or monitoring functions.
What packaging and plating specifications apply to BZW04P9V4B-E3/73?
BZW04P9V4B-E3/73 uses a DO-204AL (DO-41) axial package with matte tin-plated leads compliant with J-STD-002 and JESD22-B102. The E3 suffix indicates RoHS compliance and JESD201 Class 1A whisker resistance. It ships in 13" paper tape and reel (550 pcs/reel), with part number suffix /73 denoting specific packaging and testing configuration per Vishay's ordering guide.
BZW04P9V4B-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):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 25.7A
- 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)
BZW04P9V4B-E3/73 FAQ
1.How can I place an order for BZW04P9V4B-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P9V4B-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 BZW04P9V4B-E3/73 reliable?
The price and inventory of BZW04P9V4B-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 BZW04P9V4B-E3/73 is usually 5 days.
3.What payment methods are accepted for BZW04P9V4B-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P9V4B-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P9V4B-E3/73?
BZW04P9V4B-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P9V4B-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 BZW04P9V4B-E3/73?
For technical support, including BZW04P9V4B-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P9V4B-E3/73 requirements.
6.How does Aetrix verify that BZW04P9V4B-E3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04P9V4B-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 BZW04P9V4B-E3/73 meets industry standards.
7.What is the process for return or replacement of BZW04P9V4B-E3/73?
All BZW04P9V4B-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P9V4B-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 BZW04P9V4B-E3/73 part is unused and in its original packaging.
Return procedure for BZW04P9V4B-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04P9V4B-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
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 …
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…
