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Vishay General Semiconductor - Diodes Division TPSMB39AHM3_A/H
- Part No.:
- TPSMB39AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB39AHM3_A/H.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPSMB39AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching surges and lightning-induced transients on power rails and signal lines. It features a 39.0 V breakdown voltage (VBR), 33.3 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 µs), 185 °C maximum junction temperature, and SMB (DO-214AA) package - used in automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the TPSMB39AHM3_A/H datasheet, TPSMB39AHM3_A/H pinout, TPSMB39AHM3_A/H application, or TPSMB39AHM3_A/H equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS-compliant construction, 53.9 V clamping voltage at 11.1 A peak pulse current, and MSL Level 1 reflow compatibility up to 260 °C.
Technical Context
This TVS diode operates as a unidirectional clamping device with avalanche breakdown behavior, optimized for fast response (<1 ns) and low incremental surge resistance. Its passivated anisotropic rectifier structure ensures stable VBR drift (0.091 %/°C) and robust performance under repetitive surge stress.
Rated for 75 A non-repetitive forward surge current (8.3 ms half-sine), it delivers 3.5 V maximum forward voltage at 50 A and maintains reliable operation across –65 °C to +185 °C junction temperature range - meeting high-reliability requirements in automotive ECUs and industrial motor drives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 37.1 V min / 39.0 V nominal / 41.0 V max at 1 mA - defines precise avalanche initiation threshold for accurate overvoltage triggering |
| Stand-off Voltage VWM | 33.3 V - maximum continuous reverse working voltage before leakage exceeds 1 μA, ensuring no false triggering during normal operation |
| Clamping Voltage VC | 53.9 V at 11.1 A IPPM (10/1000 µs) - limits transient voltage seen by protected ICs to safe levels during surge events |
| Peak Pulse Power PPPM | 600 W (10/1000 µs waveform, 0.01 % duty cycle) - supports repeated surge suppression in automotive load-dump scenarios |
| Junction Temperature Range | –65 °C to +185 °C - enables deployment in under-hood automotive environments and high-temperature industrial enclosures |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD47 |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.220" x 0.130" footprint and matte tin-plated leads |
Pinout & Package
TPSMB39AHM3_A/H uses the SMB (DO-214AA) surface-mount package: cathode-indicating band on one end, anode on the other. Dimensions are 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, with MSL Level 1 rating (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient energy sink | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode | Reference node | Typically tied to system ground or low-impedance return path to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free, RoHS-compliant construction | Meets automotive environmental standards and eliminates corrosive off-gassing in sealed modules |
| 185 °C TJ max capability | Supports operation in engine control units and power inverters without thermal derating penalties |
| 600 W peak pulse power (10/1000 µs) | Handles ISO 7637-2 Pulse 5a load-dump transients in 12 V vehicle systems |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes voltage overshoot across protected MOSFET gates and microcontroller I/O pins |
| Fast response time (<1 ns) | Engages before sensitive circuitry sustains damage from ESD or fast-rising transients |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power rail and chassis ground to shunt surge energy away from downstream regulators and microcontrollers. Use Value: Limits transient voltage to ≤53.9 V, preventing latch-up or gate oxide rupture in 36 V-rated automotive LDOs and CAN transceivers. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across differential signal pair (e.g., RS-485 bus) to absorb ±8 kV contact ESD per IEC 61000-4-2. Use Value: Maintains signal integrity with <1 pF junction capacitance at zero bias, avoiding data corruption in 1 Mbps industrial communication links. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feed Protection |
|
Use Scenario: Safeguarding AC-DC adapter primary-side controllers against surge coupling from mains input during lightning strikes. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across bulk capacitor input to clamp line-to-ground transients before they reach PWM controller ICs. Use Value: Withstands 75 A surge (8.3 ms half-sine) and clamps to 53.9 V, preserving 650 V MOSFETs and optocoupler isolation barriers. |
Use Scenario: Protecting PoE-powered equipment (e.g., IP cameras, wireless APs) from induced surges on 48 V DC feed lines. IC Role / Device Role / Timing Role: Bidirectional protection not applicable; this unidirectional device used on grounded-return side of DC feed to clamp negative-going transients. Use Value: Enables compliance with IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity when paired with series impedance on live conductor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ39A | Same VBR (37.1–41.0 V), but lower PPPM (400 W), smaller SMA package (DO-214AC), no AEC-Q101 qualification | Limited to commercial-grade consumer electronics; unsuitable for automotive under-hood use due to 150 °C TJ max | Select when cost and board space are critical and automotive qualification is not required |
| TPSMB39AHM3_A/I | Identical electrical specs and qualification; differs only in packaging - 3200-unit 13" tape-and-reel vs. 750-unit 7" reel | No functional difference; choice depends solely on production volume and SMT line feeder compatibility | Select for high-volume automated assembly requiring larger reels and reduced changeover frequency |
Compared with SMAJ39A and TPSMB39AHM3_A/I, the TPSMB39AHM3_A/H offers superior surge handling (600 W vs. 400 W), extended temperature capability (185 °C vs. 150 °C), and automotive qualification - making it the preferred choice for mission-critical power rail protection where reliability outweighs minor cost or footprint trade-offs.
Availability
TPSMB39AHM3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power feed circuits requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant surge protection.
Supply support for TPSMB39AHM3_A/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, TVS devices, and optoelectronics with emphasis on high-reliability, high-efficiency, and automotive-qualified components.
The TPSMB series belongs to Vishay's PAR® transient voltage suppressor family, engineered specifically for robust, high-temperature-stable clamping in automotive power systems and industrial equipment exposed to harsh electromagnetic environments.
FAQ
What is the clamping voltage of the TPSMB39AHM3_A/H at its rated peak pulse current?
The TPSMB39AHM3_A/H has a maximum clamping voltage (VC) of 53.9 V at 11.1 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and reflects the actual voltage imposed on protected circuitry during worst-case surge events - critical for verifying margin against downstream component absolute maximum ratings.
Is the TPSMB39AHM3_A/H qualified for automotive applications?
Yes, the TPSMB39AHM3_A/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant, and automotive-grade reliability. It undergoes rigorous stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD validation - confirming suitability for under-hood ECUs, body control modules, and ADAS power supplies.
What does the "HM3" suffix mean in TPSMB39AHM3_A/H?
The "HM3" suffix in TPSMB39AHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from HE3 (RoHS-compliant and AEC-Q101 qualified but not halogen-free) and confirms compliance with automotive material restrictions per JESD201 Class 2 whisker testing and UL 94 V-0 flammability rating.
Can TPSMB39AHM3_A/H replace TPSMB39AHE3_A/H in a design?
Yes, TPSMB39AHM3_A/H is a direct replacement for TPSMB39AHE3_A/H in terms of electrical performance, thermal capability, and mechanical fit - both use SMB (DO-214AA) package and share identical VBR, VWM, and VC specifications. The only difference is HM3's halogen-free composition versus HE3's standard RoHS compliance; no PCB or layout changes are needed.
What is the maximum operating junction temperature for TPSMB39AHM3_A/H?
The TPSMB39AHM3_A/H has a maximum operating junction temperature (TJ) of +185 °C, verified per AEC-Q101 stress testing. This allows uninterrupted operation in high-ambient environments such as engine compartments, motor drive heatsinks, and enclosed industrial power supplies - significantly exceeding standard commercial-grade TVS diodes limited to 150 °C.
TPSMB39AHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 11.1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
TPSMB39AHM3_A/H FAQ
1.How can I place an order for TPSMB39AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB39AHM3_A/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 TPSMB39AHM3_A/H reliable?
The price and inventory of TPSMB39AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB39AHM3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMB39AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB39AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB39AHM3_A/H?
TPSMB39AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB39AHM3_A/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 TPSMB39AHM3_A/H?
For technical support, including TPSMB39AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB39AHM3_A/H requirements.
6.How does Aetrix verify that TPSMB39AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMB39AHM3_A/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 TPSMB39AHM3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMB39AHM3_A/H?
All TPSMB39AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB39AHM3_A/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 TPSMB39AHM3_A/H part is unused and in its original packaging.
Return procedure for TPSMB39AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB39AHM3_A/H Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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