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Vishay General Semiconductor - Diodes Division TPSMB39AHM3_A/I
- Part No.:
- TPSMB39AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB39AHM3_A/I.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,999
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Product details
Overview
TPSMB39AHM3_A/I 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 V breakdown voltage (VBR = 37.1–41.0 V), 33.3 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 µs), 11.1 A peak pulse current (IPPM), and 53.9 V clamping voltage (VC) - deployed in automotive sensor protection, industrial I/O interfaces, and DC power input stages.
For engineers reviewing the TPSMB39AHM3_A/I datasheet, TPSMB39AHM3_A/I pinout, TPSMB39AHM3_A/I application, or TPSMB39AHM3_A/I equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification, TJ = 185 °C operation, and verified clamping performance under 10/1000 µs surge conditions.
Technical Context
The TPSMB39AHM3_A/I employs passivated anisotropic rectifier technology to deliver stable avalanche breakdown with low incremental surge resistance and excellent clamping linearity. Its junction temperature range spans –65 °C to +185 °C, supporting high-reliability automotive and industrial environments where thermal derating must be maintained above 25 °C ambient.
It operates exclusively in unidirectional mode with cathode-band polarity marking, meets MSL Level 1 per J-STD-020 (260 °C peak reflow), and is halogen-free, RoHS-compliant, and qualified to AEC-Q101 - confirmed by HM3 suffix designation and Vishay Document #88406 (Rev. 23-Jan-2024).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 37.1 / 39.0 / 41.0 V - defines minimum voltage at which device enters controlled avalanche conduction under 1 mA test current |
| VWM | 33.3 V - maximum continuous reverse working voltage before leakage exceeds 1 μA at 25 °C |
| VC @ IPPM | 53.9 V - clamped voltage during 11.1 A 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 600 W - peak pulse power handling capability under standardized 10/1000 µs waveform |
| IFSM | 75 A - non-repetitive forward surge rating (8.3 ms half-sine), critical for inrush and fault tolerance |
| TJ max. | +185 °C - enables operation in under-hood automotive or high-ambient industrial enclosures without derating loss |
| αT | 0.091 %/°C - temperature coefficient of VBR, used to calculate breakdown shift across operating range |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic case meeting UL 94 V-0 flammability rating; matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102; cathode denoted by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-referenced surge clamp node | Connected to protected line (e.g., 33 V rail); conducts during overvoltage to shunt energy to ground |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return plane; completes clamping current path during transient |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22 standards |
| 185 °C junction rating | Enables deployment in engine control units, battery management systems, and industrial motor drives without thermal shutdown |
| 600 W 10/1000 µs pulse rating | Provides robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surge events |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage margin between clamping and IC absolute maximum ratings, improving system-level safety margin |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile (peak 260 °C), eliminating bake requirements prior to assembly |
Applications
| Automotive Sensor Protection | Industrial DC Power Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load-dump and inductive kickback in 12 V/24 V vehicle subsystems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients below IC damage threshold. Use Value: Clamps to 53.9 V within nanoseconds, preserving signal integrity while surviving repeated 12 V load-dump events per ISO 16750-2. | Use Scenario: Safeguarding 24 V DC input stages of PLC modules, HMIs, and motor controllers against field-wiring faults and lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main supply rail, coordinated with upstream fuse and downstream LDO/regulator. Use Value: Absorbs 600 W surge energy without degradation, maintaining <1 μA leakage at 33.3 V to avoid standby power penalty. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Shielding Ethernet PHYs, PoE injectors, and DSL line drivers from induced surges on twisted-pair cabling in outdoor or shared infrastructure. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), providing fast-response clamping for residual transients. Use Value: Sub-1 ns response time limits let-through voltage to safe levels for 100BASE-TX and Gigabit PHYs rated ≤57 V abs max. | Use Scenario: Output-side transient suppression on 5–20 V USB-C PD and wall adapter outputs to prevent damage during hot-plug or cable fault events. IC Role / Device Role / Timing Role: Final-stage TVS between output capacitor and connector, guarding against reverse connection and ESD coupling. Use Value: Halogen-free, RoHS-compliant construction meets consumer safety regulations; 33.3 V VWM ensures no conduction during normal 36 V max adapter regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ39AHE3_A/I | Same SMB package, identical VBR/VC specs, but HE3 suffix indicates RoHS-compliant/AEC-Q101 qualified without halogen-free claim | No functional difference in circuit behavior; differs only in material compliance documentation and whisker testing class | Select TPSMB39AHM3_A/I when halogen-free certification and JESD201 Class 2 whisker resistance are mandatory |
| SMCJ39AHE3_A/I | Larger SMC (DO-214AB) package, same electrical specs, higher IFSM (100 A vs. 75 A), 1500 W PPPM | Requires PCB layout change; suited for higher-energy surge environments where SMB thermal limits are marginal | Choose SMCJ39AHE3_A/I only if system-level surge testing exceeds 600 W or board space permits larger footprint |
Compared with SMBJ39AHE3_A/I and SMCJ39AHE3_A/I, the TPSMB39AHM3_A/I delivers identical clamping performance in the smallest standardized SMB outline while guaranteeing halogen-free composition and Class 2 whisker resistance - making it optimal for space-constrained, automotive-qualified designs requiring full material compliance.
Availability
TPSMB39AHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial DC power input, and telecom line interface applications requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for TPSMB39AHM3_A/I 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 reliability, thermal performance, and automotive qualification.
The TPSMB series is part of Vishay's PAR® (Passivated Anisotropic Rectifier) platform, engineered specifically for high-temperature, high-surge industrial and automotive transient suppression where stability up to 185 °C and repeatable clamping are critical.
FAQ
What is the exact breakdown voltage range for TPSMB39AHM3_A/I?
The TPSMB39AHM3_A/I has a guaranteed breakdown voltage (VBR) range of 37.1 V to 41.0 V at 1 mA test current, with nominal 39.0 V - measured per ANSI/IEEE C62.35 and confirmed in Vishay Document #88406 (Rev. 23-Jan-2024). This range ensures consistent avalanche initiation across production lots and temperature extremes, directly supporting design margin calculations for the TPSMB39AHM3_A/I.
Is TPSMB39AHM3_A/I AEC-Q101 qualified and what does the HM3 suffix signify?
Yes, the TPSMB39AHM3_A/I is fully AEC-Q101 qualified. The HM3 suffix explicitly denotes halogen-free, RoHS-compliant construction and compliance with JESD201 Class 2 whisker testing - distinct from HE3 variants. This qualification is documented in Vishay's official datasheet for the TPSMB39AHM3_A/I and applies to the entire TPSMB6.8A–TPSMB43A family.
What is the clamping voltage of TPSMB39AHM3_A/I at its rated peak pulse current?
The TPSMB39AHM3_A/I clamps to a maximum of 53.9 V at its rated peak pulse current (IPPM) of 11.1 A under the standard 10/1000 µs waveform. This value is measured per Figure 5 in Vishay Document #88406 and defines the upper voltage limit imposed on protected circuits during surge events - a critical parameter for validating IC survivability with the TPSMB39AHM3_A/I.
Can TPSMB39AHM3_A/I be used in bidirectional configurations?
No, the TPSMB39AHM3_A/I is unidirectional only, as confirmed in the "Features" section of Vishay Document #88406: "Available in unidirectional polarity only." It must be oriented with the cathode band toward the protected line and anode to ground. For bidirectional protection, a separate symmetric TVS or back-to-back configuration is required - the TPSMB39AHM3_A/I does not support reverse conduction.
What is the maximum operating junction temperature for TPSMB39AHM3_A/I and how does it affect derating?
The TPSMB39AHM3_A/I supports a maximum junction temperature (TJ) of +185 °C, enabling use in high-ambient environments such as automotive engine bays or industrial motor controls. Derating curves in Figure 2 of Vishay Document #88406 show that peak pulse power decreases linearly above 25 °C ambient - for example, at 125 °C case temperature, PPPM drops to ~400 W, a key constraint when designing thermal management for the TPSMB39AHM3_A/I.
TPSMB39AHM3_A/I 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/I FAQ
1.How can I place an order for TPSMB39AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB39AHM3_A/I 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/I reliable?
The price and inventory of TPSMB39AHM3_A/I 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/I is usually 5 days.
3.What payment methods are accepted for TPSMB39AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB39AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB39AHM3_A/I?
TPSMB39AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB39AHM3_A/I 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/I?
For technical support, including TPSMB39AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB39AHM3_A/I requirements.
6.How does Aetrix verify that TPSMB39AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMB39AHM3_A/I 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/I meets industry standards.
7.What is the process for return or replacement of TPSMB39AHM3_A/I?
All TPSMB39AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB39AHM3_A/I, 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/I part is unused and in its original packaging.
Return procedure for TPSMB39AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB39AHM3_A/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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