My Inquiry
My Account
Vishay General Semiconductor - Diodes Division BZW04-48B-E3/54
- Part No.:
- BZW04-48B-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-48B-E3/54.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,369
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZW04-48B-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on signal or power lines. It features a 47.8 V stand-off voltage (VWM), 53.2–58.8 V breakdown voltage (VBR) at 1 mA, 77.0 V maximum clamping voltage (VC) at 5.2 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) with 10/1000 μs waveform - used to protect MOSFETs, sensor interfaces, and industrial I/O circuits against ESD and inductive switching surges.
For engineers reviewing the BZW04-48B-E3/54 datasheet, BZW04-48B-E3/54 pinout, BZW04-48B-E3/54 application, or BZW04-48B-E3/54 equivalent, this device serves as a RoHS-compliant, AEC-Q101-qualified transient suppressor optimized for bidirectional line protection where polarity-agnostic surge immunity is required without DC bias constraints.
Technical Context
This bidirectional TVS operates symmetrically in both forward and reverse directions, with identical VBR, VC, and IPPM specifications regardless of polarity. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance, enabling consistent clamping performance under repetitive 10/1000 μs transients at ≤0.01% duty cycle.
The device is rated for -55 °C to +175 °C operating junction temperature, supports 1.5 W steady-state power dissipation at TL = 75 °C, and exhibits a +0.103 %/°C temperature coefficient of VBR - critical for thermal stability in automotive and industrial ambient environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 47.8 V - maximum continuous working voltage before clamping begins; defines safe operating margin for protected circuitry. |
| VBR (min/max) | 53.2 V / 58.8 V at 1 mA - guaranteed breakdown onset range; ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 77.0 V at 5.2 A - clamped voltage during 10/1000 μs surge; determines worst-case stress on downstream components. |
| PPPM | 400 W - peak pulse power handling capability; validates robustness against IEC 61000-4-5 Level 3/4 surges. |
| ID @ VWM | 1.0 μA - reverse leakage at stand-off voltage; negligible loading on high-impedance signal paths. |
| TJ max. | +175 °C - maximum junction temperature; enables use in under-hood automotive and high-temperature industrial enclosures. |
| Package | DO-41 (DO-204AL) - axial-leaded through-hole package with UL 94 V-0 epoxy molding; compatible with standard wave-soldering processes. |
Pinout & Package
DO-41 (DO-204AL) package: axial-leaded, cylindrical epoxy-molded case with matte tin-plated leads. No polarity marking - bidirectional operation eliminates cathode/anode distinction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; surge current flows bidirectionally across the junction without polarity dependency. |
| Lead 1 / Lead 2 | Mechanical termination | Standard axial leads for through-hole mounting; solderable per J-STD-002 and JESD22-B102; withstands 275 °C for 10 s. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable breakdown characteristics and long-term reliability under repeated surge stress. |
| 400 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 compliance for industrial and automotive surge immunity testing. |
| AEC-Q101 qualified | Validated for automotive electronic modules requiring enhanced reliability and qualification traceability. |
| UL 94 V-0 molded compound | Provides flame-retardant housing essential for safety-critical and enclosed system designs. |
| Low 0.103 %/°C VBR tempco | Minimizes drift in clamping threshold across wide ambient temperature ranges (-55 °C to +175 °C). |
Applications
| Industrial Motor Control I/O | Automotive Sensor Signal Lines |
|---|---|
Use Scenario: Protecting PLC digital input modules from inductive kickback generated by solenoid or relay coil de-energization. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across input terminals to limit transient voltage to <77 V during 400 W surges. Use Value: Prevents latch-up or damage to optocouplers and microcontroller GPIOs while maintaining signal integrity during frequent switching cycles. | Use Scenario: Safeguarding analog outputs of pressure or temperature sensors connected to vehicle ECUs via long harness runs. IC Role / Device Role / Timing Role: Line-referenced transient suppressor absorbing ISO 7637-2 pulse 1/2/5a surges without polarity biasing. Use Value: Enables AEC-Q101-compliant protection without additional DC blocking components, reducing BOM count and board space. |
| Telecom Power Feeds | Consumer Appliance Interface Ports |
Use Scenario: Shielding 48 V DC power inputs of PoE-powered network switches from lightning-induced longitudinal surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC feed line, coordinated with upstream MOVs for staged energy diversion. Use Value: Limits let-through voltage to safe levels for DC-DC converters and Ethernet PHYs during multi-kV transients. | Use Scenario: Hardening USB or UART debug ports on smart home hubs against ESD events during user handling. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) TVS shunting >8 kV HBM ESD pulses before reaching interface ICs. Use Value: Achieves IEC 61000-4-2 Level 4 compliance with minimal capacitance impact (<100 pF), preserving signal rise time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ48CA | DO-214AA package (SMB), 48 V VWM, 70 V VC @ 5.7 A, same 400 W PPPM but higher surge current rating. | Surface-mount footprint; lower thermal resistance than DO-41 but requires reflow-compatible layout. | Select when PCB space is constrained and SMT assembly is preferred over through-hole. |
| P6KE48CA | DO-15 package, 48 V VWM, 72 V VC @ 4.8 A, 600 W PPPM rating, higher power but larger body and longer lead inductance. | Legacy through-hole alternative with higher peak power but slower response due to package parasitics. | Choose only if legacy compatibility or higher single-pulse energy absorption is prioritized over fast clamping. |
Compared with SMBJ48CA and P6KE48CA, the BZW04-48B-E3/54 offers identical VWM and clamping performance in a compact DO-41 axial package with AEC-Q101 qualification - making it optimal for new automotive and industrial through-hole designs requiring certified reliability and proven surge endurance.
Availability
BZW04-48B-E3/54 is available at Aetrix Electronics and suitable for industrial motor control I/O, automotive sensor signal lines, and telecom power feeds requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for BZW04-48B-E3/54 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 BZW04 series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for robust bidirectional transient suppression in harsh environments including automotive, industrial automation, and telecommunications infrastructure.
FAQ
What is the clamping voltage of the BZW04-48B-E3/54 under a 10/1000 μs surge?
The BZW04-48B-E3/54 has a maximum clamping voltage (VC) of 77.0 V at 5.2 A peak pulse current (IPPM), measured using the standardized 10/1000 μs double-exponential waveform. This value is specified in the Vishay datasheet (Document Number: 88316, page 2) and represents the upper bound of voltage seen by protected circuitry during a worst-case transient event. The BZW04-48B-E3/54 maintains this clamping performance bidirectionally, ensuring consistent protection regardless of surge polarity.
Is the BZW04-48B-E3/54 suitable for automotive applications?
Yes, the BZW04-48B-E3/54 is AEC-Q101 qualified (per datasheet note on page 4), confirming its suitability for automotive electronic modules including engine control units, body electronics, and sensor interfaces. Its -55 °C to +175 °C operating junction temperature range, glass-passivated junction, and DO-41 package with matte tin leads meet automotive reliability and manufacturability requirements. The BZW04-48B-E3/54 is explicitly listed in Vishay's AEC-Q101-qualified product table.
Does the BZW04-48B-E3/54 have polarity markings?
No, the BZW04-48B-E3/54 does not have polarity markings because it is a bidirectional TVS diode. As stated in the Vishay datasheet (page 1, "Polarity" section), "no marking on bidirectional types." Both terminals are functionally identical, allowing installation without orientation concerns - a key advantage for protecting AC-coupled or differential signal lines where polarity reversal may occur.
What is the maximum reverse leakage current for the BZW04-48B-E3/54 at its stand-off voltage?
The BZW04-48B-E3/54 exhibits a maximum reverse leakage current (ID) of 1.0 μA at its 47.8 V stand-off voltage (VWM), tested at TA = 25 °C. This ultra-low leakage ensures minimal loading on high-impedance circuits such as sensor bias networks or precision reference paths. The value is confirmed in the "ELECTRICAL CHARACTERISTICS" table on page 2 of the Vishay datasheet (Document Number: 88316) under the BZW04-48B entry.
How does the temperature coefficient affect the BZW04-48B-E3/54's performance?
The BZW04-48B-E3/54 has a maximum temperature coefficient of VBR of +0.103 %/°C, meaning its breakdown voltage increases by up to 0.103% per degree Celsius rise in junction temperature. This positive drift ensures that clamping remains conservative (i.e., VBR rises) under thermal stress, avoiding premature conduction. The coefficient is validated across the full -55 °C to +175 °C operating range and directly impacts design margin calculations for high-ambient applications. The BZW04-48B-E3/54's low tempco supports stable protection in under-hood automotive and industrial power systems.
BZW04-48B-E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 47.8V
- Voltage - Breakdown (Min):
- 53.2V
- Voltage - Clamping (Max) @ Ipp:
- 77V
- Current - Peak Pulse (10/1000µs):
- 5.2A
- 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)
BZW04-48B-E3/54 FAQ
1.How can I place an order for BZW04-48B-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-48B-E3/54 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 BZW04-48B-E3/54 reliable?
The price and inventory of BZW04-48B-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-48B-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-48B-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-48B-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-48B-E3/54?
BZW04-48B-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-48B-E3/54 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 BZW04-48B-E3/54?
For technical support, including BZW04-48B-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-48B-E3/54 requirements.
6.How does Aetrix verify that BZW04-48B-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-48B-E3/54 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 BZW04-48B-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-48B-E3/54?
All BZW04-48B-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-48B-E3/54, 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 BZW04-48B-E3/54 part is unused and in its original packaging.
Return procedure for BZW04-48B-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-48B-E3/54 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 …
