My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB33AHM3_B/H
- Part No.:
- P6SMB33AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB33AHM3_B/H.pdf
- Description:
- 600W,33V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,617
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB33AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 33 V standoff voltage (VWM), 45.7 V clamping voltage at 13.1 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and lightning-induced surges in automotive and industrial power electronics.
For engineers reviewing the P6SMB33AHM3_B/H datasheet, P6SMB33AHM3_B/H pinout, P6SMB33AHM3_B/H application, or P6SMB33AHM3_B/H equivalent, key selection criteria include clamping performance under 10/1000 μs surge, AEC-Q101 qualification status, unidirectional polarity with cathode band marking, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This device operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 31.4–34.7 V breakdown range (VBR at 1 mA). Its low incremental surge resistance ensures stable clamping during repetitive 0.01% duty cycle transients, while glass-passivated junction enhances reliability under thermal cycling.
Designed for PCB-level overvoltage protection, it features MSL Level 1 moisture sensitivity, matte tin-plated leads compliant with J-STD-002, and halogen-free RoHS-compliant molding compound. The HM3 suffix confirms AEC-Q101 qualification and halogen-free construction per Vishay's material categorization standard.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 28.2 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (Breakdown) | 31.4–34.7 V at 1 mA - Confirmed avalanche initiation range under standardized test current |
| VC (Clamping) | 45.7 V at 13.1 A IPPM - Peak voltage seen by protected circuit during 10/1000 μs transient |
| PPPM | 600 W - Surge energy handling capability with industry-standard 10/1000 μs waveform |
| ID (Leakage) | 1.0 μA max at 28.2 V - Minimal reverse leakage ensuring low standby power loss |
| TJ max | +150 °C - Maximum junction temperature enabling operation in under-hood automotive environments |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline with 0.220" × 0.205" footprint and 0.096" height |
Pinout & Package
SMB (DO-214AA) package with axial lead configuration: two terminals, cathode marked by a band on the body. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per Vishay's thermal derating guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to system ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., power rail or signal trace); band denotes this terminal |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for modern industrial and consumer electronics |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surge events without degradation when mounted per spec |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage stress on downstream components during transient events |
| MSL Level 1 rating | Enables direct placement without baking, reducing manufacturing complexity and cost |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 28.2 V. Use Value: Limits transient voltage to ≤45.7 V, preventing damage to 33 V-rated CAN transceivers and microcontrollers. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance TVS on 4–20 mA or 0–10 V output lines to suppress ESD and cable-coupled noise. Use Value: Sub-1 μA leakage preserves signal integrity; fast response time prevents latch-up in precision ADC front-ends. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding PoE-powered network switches against induced surges on 48 V input rails. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of DC-DC converters and Ethernet PHYs. Use Value: 600 W rating handles multi-kV lightning-induced surges per IEC 61000-4-5; SMB footprint enables dense layout. |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Mounted across motor terminals to absorb inductive kickback during PWM commutation. Use Value: 100 A IFSM rating withstands repeated motor startup currents; glass-passivated junction ensures long-term reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A-E3/5B | Same VWM (28.2 V), higher VC (48.4 V), lower PPPM (400 W), SMA package (smaller footprint) | Limited to lower-energy transients; less robust thermal dissipation due to smaller package | Select when board space is constrained and surge threat level is ≤400 W |
| 1.5SMC33AHE3_A/H | Same VWM and VC, 1500 W PPPM, larger SMC (DO-214AB) package, same AEC-Q101/HM3 qualification | Supports higher-energy threats but requires 30% larger PCB area and different pad layout | Choose for mission-critical automotive modules where 1500 W margin is required |
Compared with P6SMB33AHM3_B/H, SMAJ33A-E3/5B offers space savings at the cost of surge margin, while 1.5SMC33AHE3_A/H delivers triple the peak power handling in a larger, thermally superior package-enabling design flexibility across cost, size, and ruggedness trade-offs.
Availability
P6SMB33AHM3_B/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom power inputs, and appliance motor drives requiring stable component supply with AEC-Q101 assurance and halogen-free compliance.
Supply support for P6SMB33AHM3_B/H 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 P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom infrastructure, delivering standardized 600 W surge capability in compact SMB packages with AEC-Q101 and RoHS/halogen-free variants.
FAQ
What is the clamping voltage of the P6SMB33AHM3_B/H under maximum rated surge current?
The P6SMB33AHM3_B/H clamps to 45.7 V at its specified peak pulse current of 13.1 A using the 10/1000 μs waveform. This value is measured per JEDEC standards and reflects the maximum voltage imposed on the protected circuit during worst-case transient events, directly supporting design margin calculations for downstream 33 V-rated components.
Is the P6SMB33AHM3_B/H qualified for automotive use?
Yes, the P6SMB33AHM3_B/H is AEC-Q101 qualified, as confirmed by the "HM3" and "_B/H" suffixes in its ordering code. It meets stress testing requirements for temperature cycling, humidity bias, and mechanical shock, making it suitable for under-hood and cabin applications including body control modules and sensor interfaces.
How does the P6SMB33AHM3_B/H differ from the non-AEC-Q101 P6SMB33A-M3/52 variant?
The P6SMB33AHM3_B/H adds AEC-Q101 qualification and halogen-free construction versus the commercial-grade P6SMB33A-M3/52. Both share identical electrical specs (VWM = 28.2 V, VC = 45.7 V), but only P6SMB33AHM3_B/H is approved for automotive production, with extended reliability validation and traceable lot documentation.
What is the thermal resistance from junction to ambient for the P6SMB33AHM3_B/H?
The P6SMB33AHM3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended 0.2" × 0.2" copper pads. This value governs steady-state power dissipation limits and must be used with its 5.0 W power rating to ensure TJ remains below +150 °C in ambient temperatures up to +85 °C.
Can the P6SMB33AHM3_B/H be used in bidirectional configurations?
No, the P6SMB33AHM3_B/H is unidirectional only, indicated by the "A" suffix and cathode band marking. For bidirectional operation, Vishay specifies part numbers ending in "CA" (e.g., P6SMB33CA), which have symmetrical breakdown in both directions and no polarity marking-P6SMB33AHM3_B/H must not be substituted in such circuits.
P6SMB33AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 28.2V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 45.7V
- Current - Peak Pulse (10/1000µs):
- 13.1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB33AHM3_B/H FAQ
1.How can I place an order for P6SMB33AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB33AHM3_B/H 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 P6SMB33AHM3_B/H reliable?
The price and inventory of P6SMB33AHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB33AHM3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB33AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB33AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB33AHM3_B/H?
P6SMB33AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB33AHM3_B/H 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 P6SMB33AHM3_B/H?
For technical support, including P6SMB33AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB33AHM3_B/H requirements.
6.How does Aetrix verify that P6SMB33AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB33AHM3_B/H 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 P6SMB33AHM3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB33AHM3_B/H?
All P6SMB33AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB33AHM3_B/H, 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 P6SMB33AHM3_B/H part is unused and in its original packaging.
Return procedure for P6SMB33AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB33AHM3_B/H 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 …
