My Inquiry
My Account
Vishay General Semiconductor - Diodes Division BZW04P85HE3/54
- Part No.:
- BZW04P85HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P85HE3/54.pdf
- Description:
- TVS DIODE 85.5VWM 137VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,917
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZW04P85HE3/54 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 85.5 V stand-off voltage (VWM), 137 V maximum clamping voltage (VC) at 2.9 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 BZW04P85HE3/54 datasheet, BZW04P85HE3/54 pinout, BZW04P85HE3/54 application, or BZW04P85HE3/54 equivalent, key selection criteria include its AEC-Q101 qualification, DO-204AL (DO-41) package, bi-directional symmetry, low leakage (<1 μA at VWM), and temperature coefficient of breakdown voltage (0.106 %/°C).
Technical Context
This device operates as a voltage-clamping protector using an avalanche junction to divert transient energy away from sensitive downstream circuitry. Its bi-directional structure enables symmetrical clamping in both polarities without polarity marking, making it suitable for AC-coupled or floating signal paths.
It delivers stable performance across –55 °C to +175 °C junction temperature range, with thermal derating defined per Figure 2 and compliant soldering per JESD 22-B106 (275 °C, 10 s). The glass-passivated chip junction ensures reliability under repetitive surge stress at 0.01 % duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 85.5 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below breakdown. |
| VBR min/max | 95.0 V / 110 V at 1 mA - Confirmed breakdown voltage range; ensures predictable turn-on during transients. |
| VC @ IPPM | 137 V at 2.9 A - Clamped voltage seen by protected circuit during 10/1000 μs surge; limits stress on downstream ICs. |
| PPPM | 400 W - Peak pulse power handling with 10/1000 μs waveform; supports common IEC 61000-4-5 surge test levels. |
| ID @ VWM | <1 μA - Reverse leakage at rated stand-off voltage; minimizes quiescent power loss in high-impedance circuits. |
| TJ max | +175 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing. |
Pinout & Package
Package: DO-204AL (DO-41), axial lead, molded epoxy case meeting UL 94 V-0. Matte tin-plated leads, RoHS-compliant, AEC-Q101 qualified (HE3 suffix). No polarity marking for bi-directional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Bi-directional terminals - either end functions identically; no cathode band; used across line-to-line or line-to-ground. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhances long-term stability and moisture resistance in harsh environments, critical for automotive and industrial field life. |
| 400 W peak pulse power (10/1000 μs) | Supports Level 4 IEC 61000-4-5 surge immunity (4 kV line-earth) without degradation after repeated events. |
| AEC-Q101 qualification | Validated for automotive electronics including engine control units, body controllers, and ADAS sensor interfaces. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a), improving protection fidelity. |
| 0.106 %/°C VBR tempco | Ensures predictable clamping threshold shift over temperature - essential for designs operating across –40 °C to +125 °C ambient. |
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 inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed at connector interface or IC input pins to limit transient excursions below absolute maximum ratings. Use Value: Prevents latch-up or permanent damage to 5 V or 3.3 V signal chain components during 12 V/24 V system surges up to 400 W. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers against field-wiring induced surges (e.g., relay coil flyback, lightning coupling). IC Role / Device Role / Timing Role: Primary front-end TVS on 24 V DC input channels, shunting energy before optocoupler or Schmitt trigger input stages. Use Value: Enables >100,000 surge cycles at 2.9 A (10/1000 μs) without parameter drift, supporting 15+ year industrial equipment lifetimes. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Protecting RS-485 transceivers and Ethernet PHY magnetics from ESD and fast transient bursts in building automation gateways. IC Role / Device Role / Timing Role: Bi-directional clamping element across differential pairs or between line and ground, leveraging symmetric response. Use Value: Maintains signal integrity with <1 μA leakage at 85.5 V, avoiding bias shift in high-impedance termination networks. |
Use Scenario: Shielding microcontroller GPIOs and gate drivers from back-EMF spikes generated by brushed DC motors in washing machines or HVAC blowers. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor mounted at motor driver PCB edge, directly across supply rails or MOSFET source-drain. Use Value: Clamps 137 V within nanoseconds, preventing false triggering or shoot-through in half-bridge configurations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ85CA | DO-214AA package (SMB), 85 V VWM, 137 V VC @ 2.9 A, same PPPM (400 W), but lower TJ max (150 °C) and no AEC-Q101 rating. | Preferred for cost-sensitive commercial PCBs where automotive qualification is not required; requires larger board area than DO-41. | Select SMBJ85CA only if AEC-Q101 is unnecessary and surface-mount assembly is preferred. |
| 1.5KE85CA | DO-201AD package, 85 V VWM, 137 V VC @ 2.9 A, 1500 W PPPM (10/1000 μs), higher surge capacity but larger size and no AEC-Q101. | Suitable for high-energy industrial surge protection where footprint is secondary to energy absorption; lacks automotive validation. | Choose 1.5KE85CA when protecting AC mains inputs or high-inductance loads requiring >400 W single-event handling. |
Compared with SMBJ85CA and 1.5KE85CA, BZW04P85HE3/54 uniquely combines AEC-Q101 qualification, compact DO-41 through-hole fit, and precise 85.5 V VWM tolerance - making it optimal for space-constrained, automotive-grade signal line protection where reliability and legacy through-hole compatibility are mandatory.
Availability
BZW04P85HE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, long-lifecycle support, and AEC-Q101 traceability.
Supply support for BZW04P85HE3/54 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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The BZW04P series belongs to Vishay's TransZorb® TVS family, engineered specifically for high-reliability transient suppression in automotive, industrial, and telecom infrastructure - balancing clamping precision, surge endurance, and environmental ruggedness.
FAQ
What is the maximum clamping voltage of BZW04P85HE3/54 under standard test conditions?
The maximum clamping voltage (VC) of BZW04P85HE3/54 is 137 V, measured at a peak pulse current (IPPM) of 2.9 A with a 10/1000 μs waveform at TA = 25 °C. This value defines the upper voltage limit imposed on protected circuitry during surge events and is confirmed in the Electrical Characteristics table on page 2 of Vishay document 88316.
Is BZW04P85HE3/54 suitable for automotive applications?
Yes, BZW04P85HE3/54 is AEC-Q101 qualified, as indicated by the "HE3" suffix (per Vishay mechanical data section), and is explicitly rated for operation from –55 °C to +175 °C junction temperature. It is designed for use in automotive subsystems including body electronics, powertrain sensors, and infotainment interfaces where transient immunity and long-term reliability are critical.
What does the "B" suffix mean in BZW04P85B, and does BZW04P85HE3/54 include it?
The "B" suffix denotes bi-directional configuration, confirming symmetrical clamping behavior in both polarities. BZW04P85HE3/54 is inherently bi-directional - the "B" is implied in the base part numbering convention for the P-series and is validated by identical VBR min/max values in both directions and absence of polarity marking per the datasheet mechanical notes.
What is the standoff voltage (VWM) and how does it relate to the breakdown voltage (VBR) of BZW04P85HE3/54?
The standoff voltage (VWM) of BZW04P85HE3/54 is 85.5 V - the maximum DC or RMS voltage that can be continuously applied without triggering clamping. Its minimum breakdown voltage (VBR) is 95.0 V at 1 mA test current, providing a guaranteed 9.5 V design margin to prevent false triggering during normal operation while ensuring rapid response above this threshold.
Can BZW04P85HE3/54 be used in place of a unidirectional TVS diode?
No - BZW04P85HE3/54 is strictly bi-directional and lacks polarity marking; substituting it for a unidirectional TVS (e.g., BZW04P85HE3/54 vs. BZW04P85E3/54) would compromise forward-bias conduction path integrity in DC-biased circuits. Unidirectional variants provide dedicated anode/cathode orientation and forward voltage (VF ≈ 3.5–5.0 V), which BZW04P85HE3/54 does not specify or guarantee.
BZW04P85HE3/54 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 85.5V
- Voltage - Breakdown (Min):
- 95V
- Voltage - Clamping (Max) @ Ipp:
- 137V
- Current - Peak Pulse (10/1000µs):
- 2.9A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04P85HE3/54 FAQ
1.How can I place an order for BZW04P85HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P85HE3/54 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 BZW04P85HE3/54 reliable?
The price and inventory of BZW04P85HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04P85HE3/54 is usually 5 days.
3.What payment methods are accepted for BZW04P85HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P85HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P85HE3/54?
BZW04P85HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P85HE3/54 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 BZW04P85HE3/54?
For technical support, including BZW04P85HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P85HE3/54 requirements.
6.How does Aetrix verify that BZW04P85HE3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04P85HE3/54 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 BZW04P85HE3/54 meets industry standards.
7.What is the process for return or replacement of BZW04P85HE3/54?
All BZW04P85HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P85HE3/54, 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 BZW04P85HE3/54 part is unused and in its original packaging.
Return procedure for BZW04P85HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04P85HE3/54 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 …
