My Inquiry
My Account
Vishay BZD27B120P-HE3_A18
- Part No.:
- BZD27B120P-HE3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B120P-HE3_A18.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,525
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZD27B120P-HE3_A18 from Vishay Semiconductors is a surface-mount, AEC-Q101-qualified Zener diode with nominal breakdown voltage of 120 V, ±2 % tolerance, 5 mA test current, and 161 V clamping voltage at 100 A surge (10/1000 μs). It delivers 150 W non-repetitive peak surge power in the low-profile SMF (DO-219AB) package and is used for overvoltage protection in automotive power rails and industrial DC bus lines.
For engineers reviewing the BZD27B120P-HE3_A18 datasheet, BZD27B120P-HE3_A18 pinout, BZD27B120P-HE3_A18 application, or BZD27B120P-HE3_A18 equivalent, key selection criteria include its 120 V Zener voltage tolerance, 161 V clamping performance under 100 A transient, AEC-Q101 qualification, MSL level 1 rating, and compatibility with reflow soldering per J-STD-020.
Technical Context
This unidirectional Zener diode operates as a precision voltage reference and transient voltage suppressor. Its silicon planar construction ensures stable breakdown characteristics, low leakage (<1 μA at VR = 100 V), and temperature coefficient of +0.09 to +0.13 %/°C - enabling predictable regulation across -65 °C to +175 °C operating range.
The device features a single-diode configuration in an SMF (DO-219AB) package with 30 K/W junction-to-lead thermal resistance. It meets JESD 201 Class 2 whisker testing and supports wave/reflow soldering with peak temperature up to 260 °C, making it suitable for high-reliability automotive PCB assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 117.6 V min. / 120 V nom. / 122.4 V max. - tight ±2 % tolerance enables accurate voltage clamping in safety-critical 120 V systems. |
| Test Current (IZT) | 5 mA - standardized bias point for specifying VZ, ensuring consistent measurement across production lots. |
| Clamping Voltage (VC) | 161 V at IRSM = 100 A (10/1000 μs) - defines maximum voltage seen by protected circuit during surge events. |
| Peak Surge Power (PRSM) | 150 W - specifies energy-handling capability for transient suppression without failure. |
| Junction Temperature (Tj) | 175 °C max. - supports operation in under-hood automotive environments and high-ambient industrial settings. |
| ESD Rating | HBM > 8 kV, MM > 800 V - ensures robustness against handling and system-level electrostatic discharge. |
| Moisture Sensitivity | MSL level 1 - allows unlimited floor life and eliminates bake requirements before reflow. |
Pinout & Package
Package: SMF (DO-219AB), low-profile surface-mount case with cathode marking on top surface; dimensions 2.9 mm × 1.9 mm × 0.85 mm; compatible with standard SOD-123W footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential node; forms cathode-anode polarity for reverse-biased Zener operation. |
| Cathode | Current exit terminal during reverse breakdown | Marked side on package; connected to higher-potential rail to clamp transients toward ground or reference. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and battery management systems requiring zero-failure reliability. |
| ±2 % VZ tolerance | Enables precise voltage threshold setting without post-production trimming, reducing BOM and calibration cost. |
| 161 V clamping at 100 A | Provides defined overvoltage ceiling during ISO 7637-2 pulse 5a/b surges in 120 V DC systems. |
| MSL level 1 rating | Eliminates moisture-related popcorning risk during reflow, supporting high-yield automated assembly without dry-pack or baking. |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth-induced short circuits in long-life automotive modules operating beyond 15 years. |
Applications
| Automotive Power Rail Protection | Industrial DC Bus Clamping |
|---|---|
Use Scenario: Protecting 120 V battery-fed ECUs from load dump transients per ISO 7637-2 Pulse 5. IC Role / Device Role / Timing Role: Unidirectional Zener clamping diode placed between power rail and chassis ground. Use Value: Limits peak voltage to 161 V during 100 A surges, preventing damage to downstream 150 V-rated MOSFETs and gate drivers. |
Use Scenario: Safeguarding PLC power supplies against switching transients in 110–125 V industrial DC distribution networks. IC Role / Device Role / Timing Role: Standby overvoltage protector mounted across input capacitor bank. Use Value: Absorbs 150 W surge energy without degradation, maintaining system uptime during contactor switching events. |
| Renewable Energy Inverter DC Link | Telecom Power Shelf Protection |
Use Scenario: Transient suppression on photovoltaic string inverters operating at 120 V nominal DC link voltage. IC Role / Device Role / Timing Role: Secondary clamping element parallel to main TVS, providing redundancy against fast-rising spikes. Use Value: Delivers 122.4 V upper VZ limit with +0.09 %/°C tempco, ensuring stable clamping across desert ambient temperatures. |
Use Scenario: Overvoltage defense in 48 V to 120 V telecom rectifier output stages exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Zener-based crowbar adjunct to primary MOV-based protection network. Use Value: Adds low-leakage (<1 μA) precision clamping at 120 V, reducing standby power loss versus wide-tolerance alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120A-E3/52 | Higher clamping voltage (165 V), 100 W PPPM, DO-214AA package | Designed for general-purpose TVS use; lacks AEC-Q101 qualification and ±2 % VZ tolerance | Select when AEC-Q101 is not required and board space permits larger SMB package. |
| P6SMB120A | Same 120 V standoff, but ±5 % tolerance, 165 V clamping, DO-214AA, no AEC-Q101 | Cost-optimized commercial-grade alternative; lower stability and higher leakage (5 μA) | Choose for non-automotive industrial applications where tighter VZ tolerance is not critical. |
Compared with SMBJ120A-E3/52 and P6SMB120A, the BZD27B120P-HE3_A18 offers superior voltage accuracy, automotive qualification, and smaller SMF footprint - making it optimal for space-constrained, high-reliability 120 V protection where parametric consistency matters.
Availability
BZD27B120P-HE3_A18 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial DC bus clamping, renewable energy inverter DC links, and telecom power shelf designs requiring stable component supply and long-term lifecycle support.
Supply support for BZD27B120P-HE3_A18 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 Semiconductors is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The BZD27B Series targets high-stability, AEC-Q101-compliant Zener protection in compact surface-mount packages - designed specifically for next-generation automotive power systems and ruggedized industrial controls.
FAQ
What is the Zener voltage tolerance of BZD27B120P-HE3_A18?
The BZD27B120P-HE3_A18 has a nominal Zener voltage of 120 V with a guaranteed tolerance of ±2 %, meaning the actual breakdown voltage falls between 117.6 V and 122.4 V at 5 mA test current. This tight tolerance is specified per the BZD27B Series datasheet Rev. 2.1 and is maintained across the full operating temperature range of -65 °C to +175 °C.
Is BZD27B120P-HE3_A18 qualified for automotive applications?
Yes, BZD27B120P-HE3_A18 is explicitly AEC-Q101 qualified, as indicated by the "-HE3" suffix in its ordering code. It meets stress test requirements including high-temperature operating life, temperature cycling, and mechanical shock - making it suitable for under-hood and powertrain applications where reliability is mission-critical.
What is the clamping voltage of BZD27B120P-HE3_A18 under surge conditions?
The BZD27B120P-HE3_A18 clamps to 161 V at a peak reverse surge current of 100 A with a 10/1000 μs waveform. This value is measured per IEC 60-1 and documented in the Electrical Characteristics table on page 3 of the BZD27B Series datasheet (Document Number: 85921).
Which package does BZD27B120P-HE3_A18 use, and what are its key mechanical features?
BZD27B120P-HE3_A18 uses the SMF (DO-219AB) package: a low-profile, surface-mount case measuring 2.9 mm × 1.9 mm × 0.85 mm. It features a cathode marking on the top surface, MSL level 1 rating, and compatibility with standard reflow profiles peaking at 260 °C - verified per J-STD-020.
Does BZD27B120P-HE3_A18 have ESD protection ratings?
Yes, BZD27B120P-HE3_A18 is rated for ESD per AEC-Q101: human body model > 8 kV and machine model > 800 V. These values are confirmed in the FEATURES section of the BZD27B Series datasheet and reflect its suitability for handling in automotive manufacturing environments.
BZD27B120P-HE3_A18 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- Package/Case:
- DO-219AB
- Series:
- BZD27B, eSMP®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 100V (Max)
- Voltage - Breakdown (Min):
- 117.6V
- Voltage - Clamping (Max) @ Ipp:
- 161V
- Current - Peak Pulse (10/1000µs):
- 900mA
- Power - Peak Pulse:
- 150W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
BZD27B120P-HE3_A18 FAQ
1.How can I place an order for BZD27B120P-HE3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B120P-HE3_A18 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 BZD27B120P-HE3_A18 reliable?
The price and inventory of BZD27B120P-HE3_A18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZD27B120P-HE3_A18 is usually 5 days.
3.What payment methods are accepted for BZD27B120P-HE3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B120P-HE3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B120P-HE3_A18?
BZD27B120P-HE3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B120P-HE3_A18 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 BZD27B120P-HE3_A18?
For technical support, including BZD27B120P-HE3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B120P-HE3_A18 requirements.
6.How does Aetrix verify that BZD27B120P-HE3_A18 is sourced from the original manufacturer or authorized distributors?
All BZD27B120P-HE3_A18 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 BZD27B120P-HE3_A18 meets industry standards.
7.What is the process for return or replacement of BZD27B120P-HE3_A18?
All BZD27B120P-HE3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B120P-HE3_A18, 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 BZD27B120P-HE3_A18 part is unused and in its original packaging.
Return procedure for BZD27B120P-HE3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZD27B120P-HE3_A18 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 …
