What is the difference between B**B-ZR-SM3-TF AND B**B-ZR-SM4-TF (LF)(SN)?

The difference is the housing / wafer material...

SM3 is made of 46 Nylon glass-filled
SM4 is made of PA 6T Nylon glass-filled and is the RoHS compliant version.

The SM4 is better than SM3 for the higher temperatures required for the lead-free solder reflow process.

For more information please contact us here.

What is the difference between ( )FLZ-(R)SM1-TB and ( )FLZ-(R)SM2-TB(LF)(SN)?

The difference is the material to conform to RoHS compliance.

The older SM1 / RSM1 are of 46 Nylon.
The compliant SM2 / RSM2 are of Glass-filled PA6T Nylon. These better withstand the higher temperatures required for the lead free solder reflow process.

For more information please contact us here.

What is the difference between SBHS-002T-P0.5 and SBHS-002T-P0.5A

The difference is the width of the contact lance. The "A" style is the latest version with a lance that is about twice the width of the original contact (without the "A").

The contact was modified and went into effect in April 2003 to improve contact retention within the housing and to help prevent accidental extraction and slippage of the contact from the housing.

As the contact lance has been modified, so has the applicable housing. The housing to be used with contact SBHS-002T-P0.5A is part number BHSR-02VS-1(N); the (N) indicates a modification of the housing lance to accommodate the contact with the modified lance.

For further details please contact us at the following link:  Contact Us

Crimp Specifications (crimp heights, strip lengths, tensile strengths)

Crimp specifications for many of the common crimp contacts and terminals are now available on our web site on the following menu selection. Application Tools and Specifications

When selecting this link, choose the "Crimp Style Connectors". From there, enter the exact contact part number or choose it from the alphabetical scroll list [Select Model Number (from list):] provided.

The results will provide the user with the tooling options as well as the crimp specifications at the bottom of the page.

If further information is required, or an item is not listed, please contact us here for more information.

Part number nomenclature not cataloged

When purchasing some JST part numbers, you may find added characters and letters added to the prefix or the suffix of the part number as designated by our factories and sales offices.

Prefixed characters indicate the factory of origin while suffixed characters may indicate RoHS compliance and/or internal JST changes (i.e. change in raw material supplier). Any internal changes denoted in the suffix do not affect part fit, form or function.

The following common prefixed characters would indicate the factory / country of origin. If there is no character prefixed to the part number, the country of origin is Japan:

(G) = Shanghai, China
(W) = Indonesia
(C) = Waukegan, Illinois, USA
(Q) = Korea
(D) = Malaysia
(B) = Belgium
(K) = Kurayoshi, Japan
(I) = Innosho, Japan
(U) = Utsunomiya, Japan
(K) = Yangsan, Korea
(A) = Guntersville, Alabama, USA
(V) = France
(X) = Germany
(O) = Oda, Japan

The following suffixed characters would indicate the part number is RoHS compliant. These typically apply to PCB mounted headers. The majority of housings and contacts are RoHS compliant as is and do not require these added characters. Please contact your JST sales representative to confirm RoHS compliance if you are uncertain:

(LF) = Lead-free. The finish would be 98% tin and 2% copper.
(LF)(SN) = Lead-free with a 100% pure tin finish [SN is the Periodic Table of Elements symbol for tin].
(LF)(AU) = Lead-free with a 100% gold finish [AU is the Periodic Table of Elements symbol for gold]. The gold finish would have a nickel underplate.

Other characters, such as (S), (N), (M), etc., would indicate modifications to the part, changes in the raw material supplier at the factory, or packaging. These characters differ from part to part and series to series. For details on such characters, please contact your JST sales representative.

What is the significance of (NN) suffixed to the YL plug part number?

Enacted in 1997, the (NN) indicates a slight modification made to the locking mechanism of the YLP housings as shown in the basic diagram below.



The (NN) will not be displayed on the data sheets or product specifications. Please contact us here if you have further technical questions.

B3P-VH with center post omitted

How do I order B3P-VH with the center post (pin #2) removed / omitted?

The part number would be B2P3-VH.

The RoHS compliant version adds (LF)(SN) to the part number suffix.