My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB51AHE3/52
- Part No.:
- P6SMB51AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB51AHE3/52.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,059
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB51AHE3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 51 V breakdown voltage (VBR = 48.5–53.6 V at IT = 1.0 mA), 70.1 V maximum clamping voltage (VC) at 8.6 A peak pulse current, and 600 W peak pulse power (10/1000 μs waveform). It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in automotive and industrial power supply rails.
For engineers reviewing the P6SMB51AHE3/52 datasheet, P6SMB51AHE3/52 pinout, P6SMB51AHE3/52 application, or P6SMB51AHE3/52 equivalent, this AEC-Q101 qualified TVS offers verified clamping performance, low incremental surge resistance, and RoHS-compliant matte tin-plated leads suitable for automated SMT assembly and high-reliability automotive electronics.
Technical Context
The P6SMB51AHE3/52 operates as a unidirectional avalanche diode with cathode-banded polarity, leveraging glass-passivated junction technology for stable reverse breakdown and fast response to transient overvoltage events. Its thermal resistance (RθJA = 100 °C/W) and junction temperature limit (TJ = –65 to +150 °C) support operation on standard 0.2" × 0.2" copper pads without forced cooling.
It delivers 600 W peak pulse power under 10/1000 μs waveform with 0.01% duty cycle, clamping at ≤70.1 V while conducting 8.6 A, and exhibits 0.102 %/°C temperature coefficient of VBR. Reverse leakage is limited to ≤1.0 μA at 43.6 V stand-off voltage (VWM), ensuring minimal standby power loss in protected circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 48.5 V / 53.6 V at 1.0 mA test current - defines precise avalanche onset range for reliable overvoltage triggering |
| VWM | 43.6 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 70.1 V at 8.6 A - clamping voltage during 600 W transient, limiting downstream device stress |
| PPPM | 600 W (10/1000 μs) - peak surge energy absorption capability per industry-standard waveform |
| IFSM | 100 A (8.3 ms half-sine) - surge current rating for unidirectional forward conduction during fault conditions |
| TJ max. | +150 °C - maximum junction temperature enabling use in under-hood automotive environments |
| MSL Level | Level 1 (J-STD-020) - supports lead-free reflow up to 260 °C peak without moisture-induced damage |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; cathode indicated by band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (unidirectional) | Connected to circuit ground or lower-potential node; conducts during positive transients when cathode is at higher potential |
| Cathode | Avalanche clamping terminal (marked with band) | Connected to protected line (e.g., 48 V rail); initiates controlled breakdown above VWM to shunt surge current to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS power rails |
| Glass passivated junction | Ensures long-term stability of VBR and low parameter drift across temperature and lifetime |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 surge events without degradation |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage overshoot during clamping, protecting sensitive 50 V-rated components |
| MSL Level 1 rating | Enables single-pass lead-free reflow without baking or special handling in high-volume SMT lines |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 48 V battery-supplied ECUs from load dump and inductive kickback in vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp transients above 43.6 V. Use Value: Limits voltage to ≤70.1 V during 600 W surges, preventing damage to 50 V-rated DC-DC controllers and CAN transceivers. |
Use Scenario: Shielding analog output lines of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: TVS connected from signal line to ground, absorbing ESD and switching noise coupled onto 0–10 V or 4–20 mA paths. Use Value: Sub-1 ns response time and ≤1.0 μA leakage at 43.6 V preserve signal integrity and measurement accuracy. |
| Telecom DC Power Input Protection | Consumer Power Adapter Output Clamping |
|
Use Scenario: Safeguarding PoE-powered equipment inputs against surges on 48 V DC distribution lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC bus upstream of DC-DC converters. Use Value: 600 W rating handles repeated lightning-induced surges per IEC 61000-4-5 Level 4 without derating. |
Use Scenario: Suppressing turn-on transients in USB-C PD adapters delivering 20 V/3 A outputs. IC Role / Device Role / Timing Role: Unidirectional TVS on output rail to prevent overvoltage damage to connected devices during regulation faults. Use Value: Tight VBR tolerance (±5.2%) and 70.1 V clamping ensure compliance with USB PD v2.0 overvoltage limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ51A | Same SMB package, identical VBR (48.5–53.6 V), but rated for 400 W PPPM and not AEC-Q101 qualified | Limited to commercial-grade industrial and consumer applications; unsuitable for automotive under-hood use | Select SMAJ51A only if AEC-Q101 qualification and 600 W surge margin are not required |
| 1.5SMC51A | Higher-power 1500 W variant in larger SMC (DO-214AB) package; same VBR, VC = 70.1 V, but 2.5× footprint and 3.5× weight | Used where higher surge repetition rate or longer waveform immunity (e.g., 8/20 μs) is needed | Choose 1.5SMC51A only when PCB space allows larger package and system-level testing demands >600 W capability |
Compared with SMAJ51A and 1.5SMC51A, the P6SMB51AHE3/52 uniquely balances AEC-Q101 qualification, 600 W surge capacity, and compact SMB footprint-making it optimal for space-constrained automotive modules requiring validated reliability and full 10/1000 μs compliance.
Availability
P6SMB51AHE3/52 is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interface design, and telecom DC input protection requiring stable component supply, AEC-Q101 traceability, and consistent 600 W surge performance.
Supply support for P6SMB51AHE3/52 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, and passive components for automotive, industrial, and computing markets.
The P6SMB Series targets robust transient suppression in harsh environments, with design emphasis on AEC-Q101 qualification, low-profile SMT compatibility, and repeatable clamping performance across temperature and life cycles.
FAQ
What is the maximum clamping voltage of the P6SMB51AHE3/52 under a 600 W transient?
The P6SMB51AHE3/52 clamps to a maximum of 70.1 V when subjected to its rated 600 W peak pulse power with a 10/1000 μs waveform. This value is measured at 8.6 A peak pulse current (IPPM) and ensures downstream components see no more than 70.1 V during surge events, critical for protecting 50 V-rated ICs and MOSFETs in automotive and industrial designs.
Is the P6SMB51AHE3/52 qualified for automotive applications?
Yes, the P6SMB51AHE3/52 is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's P6SMB series datasheet (Rev. 09-Jan-2024, Doc. #88370). This qualification validates its reliability for automotive powertrain, body electronics, and ADAS systems where extended temperature operation (–65 to +150 °C) and surge immunity are mandatory.
What does the "HE3" suffix indicate in P6SMB51AHE3/52?
The "HE3" suffix in P6SMB51AHE3/52 denotes RoHS-compliant construction with AEC-Q101 qualification and matte tin-plated leads meeting J-STD-002 solderability standards. The "H" indicates AEC-Q101 compliance, "E3" confirms RoHS compliance, and "/52" specifies packaging in 7" diameter tape-and-reel with 750 units per reel.
How does the P6SMB51AHE3/52 differ from bidirectional variants like P6SMB51CA?
The P6SMB51AHE3/52 is unidirectional, featuring a cathode band and designed to protect DC circuits where polarity is fixed; it conducts only in reverse breakdown. In contrast, P6SMB51CA is bidirectional with no polarity marking and suppresses transients on AC or floating lines. Their VBR, VC, and PPPM ratings are identical, but circuit topology determines selection.
What is the thermal resistance of the P6SMB51AHE3/52, and how does it affect layout?
The P6SMB51AHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. This requires minimum pad dimensions of 0.086" × 0.060" (2.18 mm × 1.52 mm) per lead to maintain safe junction temperatures below +150 °C during repetitive 600 W pulses-no additional heatsinking is needed for standard automotive duty cycles.
P6SMB51AHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 43.6V
- Voltage - Breakdown (Min):
- 48.5V
- Voltage - Clamping (Max) @ Ipp:
- 70.1V
- Current - Peak Pulse (10/1000µs):
- 8.6A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB51AHE3/52 FAQ
1.How can I place an order for P6SMB51AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB51AHE3/52 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 P6SMB51AHE3/52 reliable?
The price and inventory of P6SMB51AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB51AHE3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB51AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB51AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB51AHE3/52?
P6SMB51AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB51AHE3/52 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 P6SMB51AHE3/52?
For technical support, including P6SMB51AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB51AHE3/52 requirements.
6.How does Aetrix verify that P6SMB51AHE3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB51AHE3/52 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 P6SMB51AHE3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB51AHE3/52?
All P6SMB51AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB51AHE3/52, 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 P6SMB51AHE3/52 part is unused and in its original packaging.
Return procedure for P6SMB51AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB51AHE3/52 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 …
